F: kernel/sched*
F: include/linux/sched.h
+SCORE ARCHITECTURE
+P: Chen Liqin
+M: liqin.chen@sunplusct.com
+P: Lennox Wu
+M: lennox.wu@sunplusct.com
+W: http://www.sunplusct.com
+S: Supported
+
SCSI CDROM DRIVER
M: Jens Axboe <axboe@kernel.dk>
L: linux-scsi@vger.kernel.org
--- /dev/null
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+
+mainmenu "Linux/SCORE Kernel Configuration"
+
+menu "Machine selection"
+
+choice
+ prompt "System type"
+ default MACH_SPCT6600
+
+config ARCH_SCORE7
+ bool "SCORE7 processor"
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select CPU_SCORE7
+ select GENERIC_HAS_IOMAP
+
+config MACH_SPCT6600
+ bool "SPCT6600 series based machines"
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select CPU_SCORE7
+ select GENERIC_HAS_IOMAP
+
+config SCORE_SIM
+ bool "Score simulator"
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select CPU_SCORE7
+ select GENERIC_HAS_IOMAP
+endchoice
+
+endmenu
+
+config CPU_SCORE7
+ bool
+
+config GENERIC_IOMAP
+ def_bool y
+
+config NO_DMA
+ bool
+ default y
+
+config RWSEM_GENERIC_SPINLOCK
+ def_bool y
+
+config GENERIC_FIND_NEXT_BIT
+ def_bool y
+
+config GENERIC_HWEIGHT
+ def_bool y
+
+config GENERIC_CALIBRATE_DELAY
+ def_bool y
+
+config GENERIC_CLOCKEVENTS
+ def_bool y
+
+config GENERIC_TIME
+ def_bool y
+
+config SCHED_NO_NO_OMIT_FRAME_POINTER
+ def_bool y
+
+config GENERIC_HARDIRQS_NO__DO_IRQ
+ def_bool y
+
+config GENERIC_SYSCALL_TABLE
+ def_bool y
+
+config SCORE_L1_CACHE_SHIFT
+ int
+ default "4"
+
+menu "Kernel type"
+
+config 32BIT
+ def_bool y
+
+config GENERIC_HARDIRQS
+ def_bool y
+
+config ARCH_FLATMEM_ENABLE
+ def_bool y
+
+config ARCH_POPULATES_NODE_MAP
+ def_bool y
+
+source "mm/Kconfig"
+
+config MEMORY_START
+ hex
+ default 0xa0000000
+
+source "kernel/time/Kconfig"
+source "kernel/Kconfig.hz"
+source "kernel/Kconfig.preempt"
+
+endmenu
+
+config RWSEM_GENERIC_SPINLOCK
+ def_bool y
+
+config LOCKDEP_SUPPORT
+ def_bool y
+
+config STACKTRACE_SUPPORT
+ def_bool y
+
+source "init/Kconfig"
+
+config PROBE_INITRD_HEADER
+ bool "Probe initrd header created by addinitrd"
+ depends on BLK_DEV_INITRD
+ help
+ Probe initrd header at the last page of kernel image.
+ Say Y here if you are using arch/score/boot/addinitrd.c to
+ add initrd or initramfs image to the kernel image.
+ Otherwise, say N.
+
+config MMU
+ def_bool y
+
+menu "Executable file formats"
+
+source "fs/Kconfig.binfmt"
+
+endmenu
+
+source "net/Kconfig"
+
+source "drivers/Kconfig"
+
+source "fs/Kconfig"
+
+source "arch/score/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"
--- /dev/null
+menu "Kernel hacking"
+
+config TRACE_IRQFLAGS_SUPPORT
+ bool
+ default y
+
+source "lib/Kconfig.debug"
+
+config CMDLINE
+ string "Default kernel command string"
+ default ""
+ help
+ On some platforms, there is currently no way for the boot loader to
+ pass arguments to the kernel. For these platforms, you can supply
+ some command-line options at build time by entering them here. In
+ other cases you can specify kernel args so that you don't have
+ to set them up in board prom initialization routines.
+
+config DEBUG_STACK_USAGE
+ bool "Enable stack utilization instrumentation"
+ depends on DEBUG_KERNEL
+ help
+ Enables the display of the minimum amount of free stack which each
+ task has ever had available in the sysrq-T and sysrq-P debug output.
+
+ This option will slow down process creation somewhat.
+
+config RUNTIME_DEBUG
+ bool "Enable run-time debugging"
+ depends on DEBUG_KERNEL
+ help
+ If you say Y here, some debugging macros will do run-time checking.
+ If you say N here, those macros will mostly turn to no-ops. See
+ include/asm-score/debug.h for debuging macros.
+ If unsure, say N.
+
+endmenu
--- /dev/null
+#
+# arch/score/Makefile
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License. See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+
+KBUILD_DEFCONFIG := spct6600_defconfig
+CROSS_COMPILE := score-linux-
+
+#
+# CPU-dependent compiler/assembler options for optimization.
+#
+cflags-y += -G0 -pipe -mel -mnhwloop -D__SCOREEL__ \
+ -D__linux__ -ffunction-sections -ffreestanding
+
+#
+# Board-dependent options and extra files
+#
+KBUILD_AFLAGS += $(cflags-y)
+KBUILD_CFLAGS += $(cflags-y)
+MODFLAGS += -mlong-calls
+LDFLAGS += --oformat elf32-littlescore
+LDFLAGS_vmlinux += -G0 -static -nostdlib
+
+head-y := arch/score/kernel/head.o
+libs-y += arch/score/lib/
+core-y += arch/score/kernel/ arch/score/mm/
+
+boot := arch/score/boot
+
+vmlinux.bin: vmlinux
+ $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
+
+archclean:
+ @$(MAKE) $(clean)=$(boot)
+
+define archhelp
+ echo ' vmlinux.bin - Raw binary boot image'
+ echo
+ echo ' These will be default as apropriate for a configured platform.'
+endef
--- /dev/null
+#
+# arch/score/boot/Makefile
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License. See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+
+targets := vmlinux.bin
+
+$(obj)/vmlinux.bin: vmlinux FORCE
+ $(call if_changed,objcopy)
+ @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
+
+clean-files += vmlinux.bin
--- /dev/null
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.30-rc5
+# Fri Jun 12 18:57:07 2009
+#
+
+#
+# Machine selection
+#
+# CONFIG_ARCH_SCORE7 is not set
+CONFIG_MACH_SPCT6600=y
+# CONFIG_SCORE_SIM is not set
+CONFIG_CPU_SCORE7=y
+CONFIG_GENERIC_IOMAP=y
+CONFIG_NO_DMA=y
+CONFIG_RWSEM_GENERIC_SPINLOCK=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_TIME=y
+CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
+CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
+CONFIG_GENERIC_SYSCALL_TABLE=y
+CONFIG_SCORE_L1_CACHE_SHIFT=4
+
+#
+# Kernel type
+#
+CONFIG_32BIT=y
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_ARCH_FLATMEM_ENABLE=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_PHYS_ADDR_T_64BIT is not set
+CONFIG_ZONE_DMA_FLAG=0
+CONFIG_VIRT_TO_BUS=y
+CONFIG_UNEVICTABLE_LRU=y
+CONFIG_HAVE_MLOCK=y
+CONFIG_HAVE_MLOCKED_PAGE_BIT=y
+CONFIG_MEMORY_START=0xa0000000
+# CONFIG_NO_HZ is not set
+# CONFIG_HIGH_RES_TIMERS is not set
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+CONFIG_HZ_100=y
+# CONFIG_HZ_250 is not set
+# CONFIG_HZ_300 is not set
+# CONFIG_HZ_1000 is not set
+CONFIG_HZ=100
+# CONFIG_SCHED_HRTICK is not set
+# CONFIG_PREEMPT_NONE is not set
+CONFIG_PREEMPT_VOLUNTARY=y
+# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION=""
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POSIX_MQUEUE_SYSCTL=y
+CONFIG_BSD_PROCESS_ACCT=y
+# CONFIG_BSD_PROCESS_ACCT_V3 is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_AUDIT is not set
+
+#
+# RCU Subsystem
+#
+CONFIG_CLASSIC_RCU=y
+# CONFIG_TREE_RCU is not set
+# CONFIG_PREEMPT_RCU is not set
+# CONFIG_TREE_RCU_TRACE is not set
+# CONFIG_PREEMPT_RCU_TRACE is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_LOG_BUF_SHIFT=12
+# CONFIG_GROUP_SCHED is not set
+# CONFIG_CGROUPS is not set
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+# CONFIG_RELAY is not set
+# CONFIG_NAMESPACES is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_RD_GZIP=y
+# CONFIG_RD_BZIP2 is not set
+# CONFIG_RD_LZMA is not set
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_ANON_INODES=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+# CONFIG_KALLSYMS is not set
+# CONFIG_STRIP_ASM_SYMS is not set
+# CONFIG_HOTPLUG is not set
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_AIO=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_COMPAT_BRK=y
+CONFIG_SLAB=y
+# CONFIG_SLUB is not set
+# CONFIG_SLOB is not set
+# CONFIG_PROFILING is not set
+# CONFIG_MARKERS is not set
+# CONFIG_SLOW_WORK is not set
+# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+CONFIG_MODULE_FORCE_LOAD=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODULE_FORCE_UNLOAD=y
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_BLOCK=y
+CONFIG_LBD=y
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_BLK_DEV_INTEGRITY is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_AS=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+# CONFIG_DEFAULT_AS is not set
+# CONFIG_DEFAULT_DEADLINE is not set
+CONFIG_DEFAULT_CFQ=y
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="cfq"
+# CONFIG_PROBE_INITRD_HEADER is not set
+CONFIG_MMU=y
+
+#
+# Executable file formats
+#
+CONFIG_BINFMT_ELF=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+# CONFIG_HAVE_AOUT is not set
+CONFIG_BINFMT_MISC=y
+CONFIG_NET=y
+
+#
+# Networking options
+#
+# CONFIG_PACKET is not set
+CONFIG_UNIX=y
+CONFIG_XFRM=y
+# CONFIG_XFRM_USER is not set
+# CONFIG_XFRM_SUB_POLICY is not set
+# CONFIG_XFRM_MIGRATE is not set
+# CONFIG_XFRM_STATISTICS is not set
+CONFIG_NET_KEY=y
+# CONFIG_NET_KEY_MIGRATE is not set
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+# CONFIG_IP_PNP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_IP_MROUTE is not set
+CONFIG_ARPD=y
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+CONFIG_INET_XFRM_MODE_TRANSPORT=y
+CONFIG_INET_XFRM_MODE_TUNNEL=y
+CONFIG_INET_XFRM_MODE_BEET=y
+# CONFIG_INET_LRO is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_NETLABEL is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_NET_DSA is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_PHONET is not set
+# CONFIG_NET_SCHED is not set
+# CONFIG_DCB is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+# CONFIG_WIRELESS is not set
+# CONFIG_WIMAX is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+# CONFIG_STANDALONE is not set
+# CONFIG_PREVENT_FIRMWARE_BUILD is not set
+# CONFIG_SYS_HYPERVISOR is not set
+# CONFIG_CONNECTOR is not set
+# CONFIG_MTD is not set
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_COW_COMMON is not set
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_CRYPTOLOOP=y
+# CONFIG_BLK_DEV_NBD is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=1
+CONFIG_BLK_DEV_RAM_SIZE=4096
+# CONFIG_BLK_DEV_XIP is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_MISC_DEVICES is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_MD is not set
+CONFIG_NETDEVICES=y
+CONFIG_COMPAT_NET_DEV_OPS=y
+# CONFIG_DUMMY is not set
+# CONFIG_BONDING is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_EQUALIZER is not set
+# CONFIG_TUN is not set
+# CONFIG_VETH is not set
+# CONFIG_NET_ETHERNET is not set
+# CONFIG_NETDEV_1000 is not set
+# CONFIG_NETDEV_10000 is not set
+
+#
+# Wireless LAN
+#
+# CONFIG_WLAN_PRE80211 is not set
+# CONFIG_WLAN_80211 is not set
+
+#
+# Enable WiMAX (Networking options) to see the WiMAX drivers
+#
+# CONFIG_WAN is not set
+# CONFIG_PPP is not set
+# CONFIG_SLIP is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+# CONFIG_ISDN is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+CONFIG_INPUT=y
+# CONFIG_INPUT_FF_MEMLESS is not set
+# CONFIG_INPUT_POLLDEV is not set
+
+#
+# Userland interfaces
+#
+# CONFIG_INPUT_MOUSEDEV is not set
+# CONFIG_INPUT_JOYDEV is not set
+# CONFIG_INPUT_EVDEV is not set
+# CONFIG_INPUT_EVBUG is not set
+
+#
+# Input Device Drivers
+#
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_INPUT_JOYSTICK is not set
+# CONFIG_INPUT_TABLET is not set
+# CONFIG_INPUT_TOUCHSCREEN is not set
+# CONFIG_INPUT_MISC is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+CONFIG_VT=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_VT_CONSOLE=y
+CONFIG_HW_CONSOLE=y
+# CONFIG_VT_HW_CONSOLE_BINDING is not set
+CONFIG_DEVKMEM=y
+CONFIG_SERIAL_NONSTANDARD=y
+# CONFIG_N_HDLC is not set
+# CONFIG_RISCOM8 is not set
+# CONFIG_SPECIALIX is not set
+# CONFIG_RIO is not set
+CONFIG_STALDRV=y
+
+#
+# Serial drivers
+#
+# CONFIG_SERIAL_8250 is not set
+
+#
+# Non-8250 serial port support
+#
+CONFIG_UNIX98_PTYS=y
+# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_RTC is not set
+# CONFIG_GEN_RTC is not set
+# CONFIG_R3964 is not set
+CONFIG_RAW_DRIVER=y
+CONFIG_MAX_RAW_DEVS=8192
+# CONFIG_TCG_TPM is not set
+# CONFIG_I2C is not set
+# CONFIG_SPI is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+# CONFIG_THERMAL is not set
+# CONFIG_THERMAL_HWMON is not set
+# CONFIG_WATCHDOG is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_CORE is not set
+# CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
+# CONFIG_MFD_TMIO is not set
+# CONFIG_REGULATOR is not set
+
+#
+# Multimedia devices
+#
+
+#
+# Multimedia core support
+#
+# CONFIG_VIDEO_DEV is not set
+# CONFIG_DVB_CORE is not set
+# CONFIG_VIDEO_MEDIA is not set
+
+#
+# Multimedia drivers
+#
+# CONFIG_DAB is not set
+
+#
+# Graphics support
+#
+# CONFIG_VGASTATE is not set
+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+
+#
+# Console display driver support
+#
+# CONFIG_VGA_CONSOLE is not set
+CONFIG_DUMMY_CONSOLE=y
+# CONFIG_SOUND is not set
+# CONFIG_HID_SUPPORT is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_MMC is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_RTC_CLASS is not set
+# CONFIG_AUXDISPLAY is not set
+# CONFIG_UIO is not set
+# CONFIG_STAGING is not set
+
+#
+# File systems
+#
+CONFIG_EXT2_FS=y
+CONFIG_EXT2_FS_XATTR=y
+CONFIG_EXT2_FS_POSIX_ACL=y
+# CONFIG_EXT2_FS_SECURITY is not set
+# CONFIG_EXT2_FS_XIP is not set
+CONFIG_EXT3_FS=y
+# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
+CONFIG_EXT3_FS_XATTR=y
+CONFIG_EXT3_FS_POSIX_ACL=y
+# CONFIG_EXT3_FS_SECURITY is not set
+# CONFIG_EXT4_FS is not set
+CONFIG_JBD=y
+CONFIG_FS_MBCACHE=y
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+CONFIG_FS_POSIX_ACL=y
+CONFIG_FILE_LOCKING=y
+# CONFIG_XFS_FS is not set
+# CONFIG_GFS2_FS is not set
+# CONFIG_OCFS2_FS is not set
+# CONFIG_BTRFS_FS is not set
+CONFIG_DNOTIFY=y
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+CONFIG_AUTOFS_FS=y
+CONFIG_AUTOFS4_FS=y
+# CONFIG_FUSE_FS is not set
+CONFIG_GENERIC_ACL=y
+
+#
+# Caches
+#
+# CONFIG_FSCACHE is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+# CONFIG_PROC_PAGE_MONITOR is not set
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+CONFIG_MISC_FILESYSTEMS=y
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_ECRYPT_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_CRAMFS is not set
+# CONFIG_SQUASHFS is not set
+# CONFIG_VXFS_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_OMFS_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_ROMFS_FS is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+# CONFIG_NILFS2_FS is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+CONFIG_NFS_V3_ACL=y
+CONFIG_NFS_V4=y
+CONFIG_NFSD=y
+CONFIG_NFSD_V2_ACL=y
+CONFIG_NFSD_V3=y
+CONFIG_NFSD_V3_ACL=y
+CONFIG_NFSD_V4=y
+CONFIG_LOCKD=y
+CONFIG_LOCKD_V4=y
+CONFIG_EXPORTFS=y
+CONFIG_NFS_ACL_SUPPORT=y
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=y
+CONFIG_SUNRPC_GSS=y
+CONFIG_RPCSEC_GSS_KRB5=y
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_NLS is not set
+# CONFIG_DLM is not set
+
+#
+# Kernel hacking
+#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=1024
+# CONFIG_MAGIC_SYSRQ is not set
+# CONFIG_UNUSED_SYMBOLS is not set
+# CONFIG_DEBUG_FS is not set
+# CONFIG_HEADERS_CHECK is not set
+# CONFIG_DEBUG_KERNEL is not set
+# CONFIG_DEBUG_MEMORY_INIT is not set
+# CONFIG_RCU_CPU_STALL_DETECTOR is not set
+# CONFIG_SYSCTL_SYSCALL_CHECK is not set
+CONFIG_TRACING_SUPPORT=y
+
+#
+# Tracers
+#
+# CONFIG_IRQSOFF_TRACER is not set
+# CONFIG_SCHED_TRACER is not set
+# CONFIG_CONTEXT_SWITCH_TRACER is not set
+# CONFIG_EVENT_TRACER is not set
+# CONFIG_BOOT_TRACER is not set
+# CONFIG_TRACE_BRANCH_PROFILING is not set
+# CONFIG_KMEMTRACE is not set
+# CONFIG_WORKQUEUE_TRACER is not set
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_SAMPLES is not set
+CONFIG_CMDLINE=""
+
+#
+# Security options
+#
+CONFIG_KEYS=y
+CONFIG_KEYS_DEBUG_PROC_KEYS=y
+CONFIG_SECURITY=y
+# CONFIG_SECURITYFS is not set
+CONFIG_SECURITY_NETWORK=y
+# CONFIG_SECURITY_NETWORK_XFRM is not set
+# CONFIG_SECURITY_PATH is not set
+CONFIG_SECURITY_FILE_CAPABILITIES=y
+CONFIG_SECURITY_DEFAULT_MMAP_MIN_ADDR=0
+# CONFIG_SECURITY_TOMOYO is not set
+CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
+# CONFIG_CRYPTO_FIPS is not set
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_ALGAPI2=y
+CONFIG_CRYPTO_AEAD=y
+CONFIG_CRYPTO_AEAD2=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_BLKCIPHER2=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_CRYPTO_RNG=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_PCOMP=y
+CONFIG_CRYPTO_MANAGER=y
+CONFIG_CRYPTO_MANAGER2=y
+# CONFIG_CRYPTO_GF128MUL is not set
+CONFIG_CRYPTO_NULL=y
+CONFIG_CRYPTO_WORKQUEUE=y
+CONFIG_CRYPTO_CRYPTD=y
+# CONFIG_CRYPTO_AUTHENC is not set
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Authenticated Encryption with Associated Data
+#
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_GCM is not set
+CONFIG_CRYPTO_SEQIV=y
+
+#
+# Block modes
+#
+CONFIG_CRYPTO_CBC=y
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+# CONFIG_CRYPTO_ECB is not set
+# CONFIG_CRYPTO_LRW is not set
+# CONFIG_CRYPTO_PCBC is not set
+# CONFIG_CRYPTO_XTS is not set
+
+#
+# Hash modes
+#
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
+
+#
+# Digest
+#
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_MD4=y
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_MICHAEL_MIC=y
+# CONFIG_CRYPTO_RMD128 is not set
+# CONFIG_CRYPTO_RMD160 is not set
+# CONFIG_CRYPTO_RMD256 is not set
+# CONFIG_CRYPTO_RMD320 is not set
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_WP512 is not set
+
+#
+# Ciphers
+#
+# CONFIG_CRYPTO_AES is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+
+#
+# Compression
+#
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_ZLIB is not set
+# CONFIG_CRYPTO_LZO is not set
+
+#
+# Random Number Generation
+#
+# CONFIG_CRYPTO_ANSI_CPRNG is not set
+# CONFIG_CRYPTO_HW is not set
+# CONFIG_BINARY_PRINTF is not set
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+CONFIG_GENERIC_FIND_LAST_BIT=y
+CONFIG_CRC_CCITT=y
+CONFIG_CRC16=y
+# CONFIG_CRC_T10DIF is not set
+# CONFIG_CRC_ITU_T is not set
+CONFIG_CRC32=y
+# CONFIG_CRC7 is not set
+CONFIG_LIBCRC32C=y
+CONFIG_ZLIB_INFLATE=y
+CONFIG_DECOMPRESS_GZIP=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_NLATTR=y
--- /dev/null
+include include/asm-generic/Kbuild.asm
+
+header-y +=
--- /dev/null
+#ifndef _ASM_SCORE_ASMMACRO_H
+#define _ASM_SCORE_ASMMACRO_H
+
+#include <asm/asm-offsets.h>
+
+#ifdef __ASSEMBLY__
+
+.macro SAVE_ALL
+ mfcr r30, cr0
+ mv r31, r0
+ nop
+ /* if UMs == 1, change stack. */
+ slli.c r30, r30, 28
+ bpl 1f
+ la r31, kernelsp
+ lw r31, [r31]
+1:
+ mv r30, r0
+ addri r0, r31, -PT_SIZE
+
+ sw r30, [r0, PT_R0]
+ .set r1
+ sw r1, [r0, PT_R1]
+ .set nor1
+ sw r2, [r0, PT_R2]
+ sw r3, [r0, PT_R3]
+ sw r4, [r0, PT_R4]
+ sw r5, [r0, PT_R5]
+ sw r6, [r0, PT_R6]
+ sw r7, [r0, PT_R7]
+
+ sw r8, [r0, PT_R8]
+ sw r9, [r0, PT_R9]
+ sw r10, [r0, PT_R10]
+ sw r11, [r0, PT_R11]
+ sw r12, [r0, PT_R12]
+ sw r13, [r0, PT_R13]
+ sw r14, [r0, PT_R14]
+ sw r15, [r0, PT_R15]
+
+ sw r16, [r0, PT_R16]
+ sw r17, [r0, PT_R17]
+ sw r18, [r0, PT_R18]
+ sw r19, [r0, PT_R19]
+ sw r20, [r0, PT_R20]
+ sw r21, [r0, PT_R21]
+ sw r22, [r0, PT_R22]
+ sw r23, [r0, PT_R23]
+
+ sw r24, [r0, PT_R24]
+ sw r25, [r0, PT_R25]
+ sw r25, [r0, PT_R25]
+ sw r26, [r0, PT_R26]
+ sw r27, [r0, PT_R27]
+
+ sw r28, [r0, PT_R28]
+ sw r29, [r0, PT_R29]
+ orri r28, r0, 0x1fff
+ li r31, 0x00001fff
+ xor r28, r28, r31
+
+ mfcehl r30, r31
+ sw r30, [r0, PT_CEH]
+ sw r31, [r0, PT_CEL]
+
+ mfcr r31, cr0
+ sw r31, [r0, PT_PSR]
+
+ mfcr r31, cr1
+ sw r31, [r0, PT_CONDITION]
+
+ mfcr r31, cr2
+ sw r31, [r0, PT_ECR]
+
+ mfcr r31, cr5
+ srli r31, r31, 1
+ slli r31, r31, 1
+ sw r31, [r0, PT_EPC]
+.endm
+
+.macro RESTORE_ALL_AND_RET
+ mfcr r30, cr0
+ srli r30, r30, 1
+ slli r30, r30, 1
+ mtcr r30, cr0
+ nop
+ nop
+ nop
+ nop
+ nop
+
+ .set r1
+ ldis r1, 0x00ff
+ and r30, r30, r1
+ not r1, r1
+ lw r31, [r0, PT_PSR]
+ and r31, r31, r1
+ .set nor1
+ or r31, r31, r30
+ mtcr r31, cr0
+ nop
+ nop
+ nop
+ nop
+ nop
+
+ lw r30, [r0, PT_CONDITION]
+ mtcr r30, cr1
+ nop
+ nop
+ nop
+ nop
+ nop
+
+ lw r30, [r0, PT_CEH]
+ lw r31, [r0, PT_CEL]
+ mtcehl r30, r31
+
+ .set r1
+ lw r1, [r0, PT_R1]
+ .set nor1
+ lw r2, [r0, PT_R2]
+ lw r3, [r0, PT_R3]
+ lw r4, [r0, PT_R4]
+ lw r5, [r0, PT_R5]
+ lw r6, [r0, PT_R6]
+ lw r7, [r0, PT_R7]
+
+ lw r8, [r0, PT_R8]
+ lw r9, [r0, PT_R9]
+ lw r10, [r0, PT_R10]
+ lw r11, [r0, PT_R11]
+ lw r12, [r0, PT_R12]
+ lw r13, [r0, PT_R13]
+ lw r14, [r0, PT_R14]
+ lw r15, [r0, PT_R15]
+
+ lw r16, [r0, PT_R16]
+ lw r17, [r0, PT_R17]
+ lw r18, [r0, PT_R18]
+ lw r19, [r0, PT_R19]
+ lw r20, [r0, PT_R20]
+ lw r21, [r0, PT_R21]
+ lw r22, [r0, PT_R22]
+ lw r23, [r0, PT_R23]
+
+ lw r24, [r0, PT_R24]
+ lw r25, [r0, PT_R25]
+ lw r26, [r0, PT_R26]
+ lw r27, [r0, PT_R27]
+ lw r28, [r0, PT_R28]
+ lw r29, [r0, PT_R29]
+
+ lw r30, [r0, PT_EPC]
+ lw r0, [r0, PT_R0]
+ mtcr r30, cr5
+ rte
+.endm
+
+#endif /* __ASSEMBLY__ */
+#endif /* _ASM_SCORE_ASMMACRO_H */
--- /dev/null
+#ifndef _ASM_SCORE_ATOMIC_H
+#define _ASM_SCORE_ATOMIC_H
+
+#include <asm-generic/atomic.h>
+
+#endif /* _ASM_SCORE_ATOMIC_H */
--- /dev/null
+#ifndef _ASM_SCORE_AUXVEC_H
+#define _ASM_SCORE_AUXVEC_H
+
+#endif /* _ASM_SCORE_AUXVEC_H */
--- /dev/null
+#ifndef _ASM_SCORE_BITOPS_H
+#define _ASM_SCORE_BITOPS_H
+
+#include <asm/byteorder.h> /* swab32 */
+#include <asm/system.h> /* save_flags */
+
+/*
+ * clear_bit() doesn't provide any barrier for the compiler.
+ */
+#define smp_mb__before_clear_bit() barrier()
+#define smp_mb__after_clear_bit() barrier()
+
+#include <asm-generic/bitops.h>
+#include <asm-generic/bitops/__fls.h>
+
+#endif /* _ASM_SCORE_BITOPS_H */
--- /dev/null
+#ifndef _ASM_SCORE_BITSPERLONG_H
+#define _ASM_SCORE_BITSPERLONG_H
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* _ASM_SCORE_BITSPERLONG_H */
--- /dev/null
+#ifndef _ASM_SCORE_BUG_H
+#define _ASM_SCORE_BUG_H
+
+#include <asm-generic/bug.h>
+
+#endif /* _ASM_SCORE_BUG_H */
--- /dev/null
+#ifndef _ASM_SCORE_BUGS_H
+#define _ASM_SCORE_BUGS_H
+
+#include <asm-generic/bugs.h>
+
+#endif /* _ASM_SCORE_BUGS_H */
--- /dev/null
+#ifndef _ASM_SCORE_BYTEORDER_H
+#define _ASM_SCORE_BYTEORDER_H
+
+#include <linux/byteorder/little_endian.h>
+
+#endif /* _ASM_SCORE_BYTEORDER_H */
--- /dev/null
+#ifndef _ASM_SCORE_CACHE_H
+#define _ASM_SCORE_CACHE_H
+
+#define L1_CACHE_SHIFT 4
+#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
+
+#endif /* _ASM_SCORE_CACHE_H */
--- /dev/null
+#ifndef _ASM_SCORE_CACHEFLUSH_H
+#define _ASM_SCORE_CACHEFLUSH_H
+
+/* Keep includes the same across arches. */
+#include <linux/mm.h>
+
+extern void flush_cache_all(void);
+extern void flush_cache_mm(struct mm_struct *mm);
+extern void flush_cache_range(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end);
+extern void flush_cache_page(struct vm_area_struct *vma,
+ unsigned long page, unsigned long pfn);
+extern void flush_cache_sigtramp(unsigned long addr);
+extern void flush_icache_all(void);
+extern void flush_icache_range(unsigned long start, unsigned long end);
+extern void flush_dcache_range(unsigned long start, unsigned long end);
+
+#define flush_cache_dup_mm(mm) do {} while (0)
+#define flush_dcache_page(page) do {} while (0)
+#define flush_dcache_mmap_lock(mapping) do {} while (0)
+#define flush_dcache_mmap_unlock(mapping) do {} while (0)
+#define flush_cache_vmap(start, end) do {} while (0)
+#define flush_cache_vunmap(start, end) do {} while (0)
+
+static inline void flush_icache_page(struct vm_area_struct *vma,
+ struct page *page)
+{
+ if (vma->vm_flags & VM_EXEC) {
+ void *v = page_address(page);
+ flush_icache_range((unsigned long) v,
+ (unsigned long) v + PAGE_SIZE);
+ }
+}
+
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+ memcpy(dst, src, len)
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
+ do { \
+ memcpy(dst, src, len); \
+ if ((vma->vm_flags & VM_EXEC)) \
+ flush_cache_page(vma, vaddr, page_to_pfn(page));\
+ } while (0)
+
+#endif /* _ASM_SCORE_CACHEFLUSH_H */
--- /dev/null
+#ifndef _ASM_SCORE_CHECKSUM_H
+#define _ASM_SCORE_CHECKSUM_H
+
+#include <linux/in6.h>
+#include <asm/uaccess.h>
+
+/*
+ * computes the checksum of a memory block at buff, length len,
+ * and adds in "sum" (32-bit)
+ *
+ * returns a 32-bit number suitable for feeding into itself
+ * or csum_tcpudp_magic
+ *
+ * this function must be called with even lengths, except
+ * for the last fragment, which may be odd
+ *
+ * it's best to have buff aligned on a 32-bit boundary
+ */
+unsigned int csum_partial(const void *buff, int len, __wsum sum);
+unsigned int csum_partial_copy_from_user(const char *src, char *dst, int len,
+ unsigned int sum, int *csum_err);
+unsigned int csum_partial_copy(const char *src, char *dst,
+ int len, unsigned int sum);
+
+/*
+ * this is a new version of the above that records errors it finds in *errp,
+ * but continues and zeros the rest of the buffer.
+ */
+
+/*
+ * Copy and checksum to user
+ */
+#define HAVE_CSUM_COPY_USER
+static inline
+__wsum csum_and_copy_to_user(const void *src, void __user *dst, int len,
+ __wsum sum, int *err_ptr)
+{
+ sum = csum_partial(src, len, sum);
+ if (copy_to_user(dst, src, len)) {
+ *err_ptr = -EFAULT;
+ return (__force __wsum) -1; /* invalid checksum */
+ }
+ return sum;
+}
+
+
+#define csum_partial_copy_nocheck csum_partial_copy
+/*
+ * Fold a partial checksum without adding pseudo headers
+ */
+
+static inline __sum16 csum_fold(__wsum sum)
+{
+ /* the while loop is unnecessary really, it's always enough with two
+ iterations */
+ __asm__ __volatile__(
+ ".set volatile\n\t"
+ ".set\tr1\n\t"
+ "slli\tr1,%0, 16\n\t"
+ "add\t%0,%0, r1\n\t"
+ "cmp.c\tr1, %0\n\t"
+ "srli\t%0, %0, 16\n\t"
+ "bleu\t1f\n\t"
+ "addi\t%0, 0x1\n\t"
+ "1:ldi\tr30, 0xffff\n\t"
+ "xor\t%0, %0, r30\n\t"
+ "slli\t%0, %0, 16\n\t"
+ "srli\t%0, %0, 16\n\t"
+ ".set\tnor1\n\t"
+ ".set optimize\n\t"
+ : "=r" (sum)
+ : "0" (sum));
+ return sum;
+}
+
+/*
+ * This is a version of ip_compute_csum() optimized for IP headers,
+ * which always checksum on 4 octet boundaries.
+ *
+ * By Jorge Cwik <jorge@laser.satlink.net>, adapted for linux by
+ * Arnt Gulbrandsen.
+ */
+static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
+{
+ unsigned int sum;
+ unsigned long dummy;
+
+ __asm__ __volatile__(
+ ".set volatile\n\t"
+ ".set\tnor1\n\t"
+ "lw\t%0, [%1]\n\t"
+ "subri\t%2, %2, 4\n\t"
+ "slli\t%2, %2, 2\n\t"
+ "lw\t%3, [%1, 4]\n\t"
+ "add\t%2, %2, %1\n\t"
+ "add\t%0, %0, %3\n\t"
+ "cmp.c\t%3, %0\n\t"
+ "lw\t%3, [%1, 8]\n\t"
+ "bleu\t1f\n\t"
+ "addi\t%0, 0x1\n\t"
+ "1:\n\t"
+ "add\t%0, %0, %3\n\t"
+ "cmp.c\t%3, %0\n\t"
+ "lw\t%3, [%1, 12]\n\t"
+ "bleu\t1f\n\t"
+ "addi\t%0, 0x1\n\t"
+ "1:add\t%0, %0, %3\n\t"
+ "cmp.c\t%3, %0\n\t"
+ "bleu\t1f\n\t"
+ "addi\t%0, 0x1\n"
+
+ "1:\tlw\t%3, [%1, 16]\n\t"
+ "addi\t%1, 4\n\t"
+ "add\t%0, %0, %3\n\t"
+ "cmp.c\t%3, %0\n\t"
+ "bleu\t2f\n\t"
+ "addi\t%0, 0x1\n"
+ "2:cmp.c\t%2, %1\n\t"
+ "bne\t1b\n\t"
+
+ ".set\tr1\n\t"
+ ".set optimize\n\t"
+ : "=&r" (sum), "=&r" (iph), "=&r" (ihl), "=&r" (dummy)
+ : "1" (iph), "2" (ihl));
+
+ return csum_fold(sum);
+}
+
+static inline __wsum
+csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
+ unsigned short proto, __wsum sum)
+{
+ unsigned long tmp = (ntohs(len) << 16) + proto * 256;
+ __asm__ __volatile__(
+ ".set volatile\n\t"
+ "add\t%0, %0, %2\n\t"
+ "cmp.c\t%2, %0\n\t"
+ "bleu\t1f\n\t"
+ "addi\t%0, 0x1\n\t"
+ "1:\n\t"
+ "add\t%0, %0, %3\n\t"
+ "cmp.c\t%3, %0\n\t"
+ "bleu\t1f\n\t"
+ "addi\t%0, 0x1\n\t"
+ "1:\n\t"
+ "add\t%0, %0, %4\n\t"
+ "cmp.c\t%4, %0\n\t"
+ "bleu\t1f\n\t"
+ "addi\t%0, 0x1\n\t"
+ "1:\n\t"
+ ".set optimize\n\t"
+ : "=r" (sum)
+ : "0" (daddr), "r"(saddr),
+ "r" (tmp),
+ "r" (sum));
+ return sum;
+}
+
+/*
+ * computes the checksum of the TCP/UDP pseudo-header
+ * returns a 16-bit checksum, already complemented
+ */
+static inline __sum16
+csum_tcpudp_magic(__be32 saddr, __be32 daddr, unsigned short len,
+ unsigned short proto, __wsum sum)
+{
+ return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
+}
+
+/*
+ * this routine is used for miscellaneous IP-like checksums, mainly
+ * in icmp.c
+ */
+
+static inline unsigned short ip_compute_csum(const void *buff, int len)
+{
+ return csum_fold(csum_partial(buff, len, 0));
+}
+
+#define _HAVE_ARCH_IPV6_CSUM
+static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
+ const struct in6_addr *daddr,
+ __u32 len, unsigned short proto,
+ __wsum sum)
+{
+ __asm__ __volatile__(
+ ".set\tnoreorder\t\t\t# csum_ipv6_magic\n\t"
+ ".set\tnoat\n\t"
+ "addu\t%0, %5\t\t\t# proto (long in network byte order)\n\t"
+ "sltu\t$1, %0, %5\n\t"
+ "addu\t%0, $1\n\t"
+ "addu\t%0, %6\t\t\t# csum\n\t"
+ "sltu\t$1, %0, %6\n\t"
+ "lw\t%1, 0(%2)\t\t\t# four words source address\n\t"
+ "addu\t%0, $1\n\t"
+ "addu\t%0, %1\n\t"
+ "sltu\t$1, %0, %1\n\t"
+ "lw\t%1, 4(%2)\n\t"
+ "addu\t%0, $1\n\t"
+ "addu\t%0, %1\n\t"
+ "sltu\t$1, %0, %1\n\t"
+ "lw\t%1, 8(%2)\n\t"
+ "addu\t%0, $1\n\t"
+ "addu\t%0, %1\n\t"
+ "sltu\t$1, %0, %1\n\t"
+ "lw\t%1, 12(%2)\n\t"
+ "addu\t%0, $1\n\t"
+ "addu\t%0, %1\n\t"
+ "sltu\t$1, %0, %1\n\t"
+ "lw\t%1, 0(%3)\n\t"
+ "addu\t%0, $1\n\t"
+ "addu\t%0, %1\n\t"
+ "sltu\t$1, %0, %1\n\t"
+ "lw\t%1, 4(%3)\n\t"
+ "addu\t%0, $1\n\t"
+ "addu\t%0, %1\n\t"
+ "sltu\t$1, %0, %1\n\t"
+ "lw\t%1, 8(%3)\n\t"
+ "addu\t%0, $1\n\t"
+ "addu\t%0, %1\n\t"
+ "sltu\t$1, %0, %1\n\t"
+ "lw\t%1, 12(%3)\n\t"
+ "addu\t%0, $1\n\t"
+ "addu\t%0, %1\n\t"
+ "sltu\t$1, %0, %1\n\t"
+ "addu\t%0, $1\t\t\t# Add final carry\n\t"
+ ".set\tnoat\n\t"
+ ".set\tnoreorder"
+ : "=r" (sum), "=r" (proto)
+ : "r" (saddr), "r" (daddr),
+ "0" (htonl(len)), "1" (htonl(proto)), "r" (sum));
+
+ return csum_fold(sum);
+}
+#endif /* _ASM_SCORE_CHECKSUM_H */
--- /dev/null
+#ifndef _ASM_SCORE_CPUTIME_H
+#define _ASM_SCORE_CPUTIME_H
+
+#include <asm-generic/cputime.h>
+
+#endif /* _ASM_SCORE_CPUTIME_H */
--- /dev/null
+#ifndef _ASM_SCORE_CURRENT_H
+#define _ASM_SCORE_CURRENT_H
+
+#include <asm-generic/current.h>
+
+#endif /* _ASM_SCORE_CURRENT_H */
--- /dev/null
+#ifndef _ASM_SCORE_DELAY_H
+#define _ASM_SCORE_DELAY_H
+
+static inline void __delay(unsigned long loops)
+{
+ /* 3 cycles per loop. */
+ __asm__ __volatile__ (
+ "1:\tsubi\t%0, 3\n\t"
+ "cmpz.c\t%0\n\t"
+ "ble\t1b\n\t"
+ : "=r" (loops)
+ : "0" (loops));
+}
+
+static inline void __udelay(unsigned long usecs)
+{
+ unsigned long loops_per_usec;
+
+ loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
+
+ __delay(usecs * loops_per_usec);
+}
+
+#define udelay(usecs) __udelay(usecs)
+
+#endif /* _ASM_SCORE_DELAY_H */
--- /dev/null
+#ifndef _ASM_SCORE_DEVICE_H
+#define _ASM_SCORE_DEVICE_H
+
+#include <asm-generic/device.h>
+
+#endif /* _ASM_SCORE_DEVICE_H */
--- /dev/null
+#ifndef _ASM_SCORE_DIV64_H
+#define _ASM_SCORE_DIV64_H
+
+#include <asm-generic/div64.h>
+
+#endif /* _ASM_SCORE_DIV64_H */
--- /dev/null
+#ifndef _ASM_SCORE_DMA_MAPPING_H
+#define _ASM_SCORE_DMA_MAPPING_H
+
+#include <asm-generic/dma-mapping-broken.h>
+
+#endif /* _ASM_SCORE_DMA_MAPPING_H */
--- /dev/null
+#ifndef _ASM_SCORE_DMA_H
+#define _ASM_SCORE_DMA_H
+
+#include <asm/io.h>
+
+#define MAX_DMA_ADDRESS (0)
+
+#endif /* _ASM_SCORE_DMA_H */
--- /dev/null
+#ifndef _ASM_SCORE_ELF_H
+#define _ASM_SCORE_ELF_H
+
+/* ELF register definitions */
+#define ELF_NGREG 45
+#define ELF_NFPREG 33
+#define EM_SCORE7 135
+
+/* Relocation types. */
+#define R_SCORE_NONE 0
+#define R_SCORE_HI16 1
+#define R_SCORE_LO16 2
+#define R_SCORE_BCMP 3
+#define R_SCORE_24 4
+#define R_SCORE_PC19 5
+#define R_SCORE16_11 6
+#define R_SCORE16_PC8 7
+#define R_SCORE_ABS32 8
+#define R_SCORE_ABS16 9
+#define R_SCORE_DUMMY2 10
+#define R_SCORE_GP15 11
+#define R_SCORE_GNU_VTINHERIT 12
+#define R_SCORE_GNU_VTENTRY 13
+#define R_SCORE_GOT15 14
+#define R_SCORE_GOT_LO16 15
+#define R_SCORE_CALL15 16
+#define R_SCORE_GPREL32 17
+#define R_SCORE_REL32 18
+#define R_SCORE_DUMMY_HI16 19
+#define R_SCORE_IMM30 20
+#define R_SCORE_IMM32 21
+
+typedef unsigned long elf_greg_t;
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+typedef double elf_fpreg_t;
+typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
+
+#define elf_check_arch(x) ((x)->e_machine == EM_SCORE7)
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS ELFCLASS32
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_DATA ELFDATA2LSB
+#define ELF_ARCH EM_SCORE7
+
+#define SET_PERSONALITY(ex) \
+do { \
+ set_personality(PER_LINUX); \
+} while (0)
+
+struct task_struct;
+struct pt_regs;
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE PAGE_SIZE
+
+/* This yields a mask that user programs can use to figure out what
+ instruction set this cpu supports. This could be done in userspace,
+ but it's not easy, and we've already done it here. */
+
+#define ELF_HWCAP (0)
+
+/* This yields a string that ld.so will use to load implementation
+ specific libraries for optimization. This is more specific in
+ intent than poking at uname or /proc/cpuinfo.
+
+ For the moment, we have only optimizations for the Intel generations,
+ but that could change... */
+
+#define ELF_PLATFORM (NULL)
+
+#define ELF_PLAT_INIT(_r, load_addr) \
+do { \
+ _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0; \
+ _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0; \
+ _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0; \
+ _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0; \
+ _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0; \
+ _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0; \
+ _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0; \
+ _r->regs[30] = _r->regs[31] = 0; \
+} while (0)
+
+/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
+ use of this is to invoke "./ld.so someprog" to test out a new version of
+ the loader. We need to make sure that it is out of the way of the program
+ that it will "exec", and that there is sufficient room for the brk. */
+
+#ifndef ELF_ET_DYN_BASE
+#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
+#endif
+
+#endif /* _ASM_SCORE_ELF_H */
--- /dev/null
+#ifndef _ASM_SCORE_EMERGENCY_RESTART_H
+#define _ASM_SCORE_EMERGENCY_RESTART_H
+
+#include <asm-generic/emergency-restart.h>
+
+#endif /* _ASM_SCORE_EMERGENCY_RESTART_H */
--- /dev/null
+#ifndef _ASM_SCORE_ERRNO_H
+#define _ASM_SCORE_ERRNO_H
+
+#include <asm-generic/errno.h>
+
+#endif /* _ASM_SCORE_ERRNO_H */
--- /dev/null
+#ifndef _ASM_SCORE_FCNTL_H
+#define _ASM_SCORE_FCNTL_H
+
+#include <asm-generic/fcntl.h>
+
+#endif /* _ASM_SCORE_FCNTL_H */
--- /dev/null
+#ifndef _ASM_SCORE_FIXMAP_H
+#define _ASM_SCORE_FIXMAP_H
+
+#include <asm/page.h>
+
+#define PHY_RAM_BASE 0x00000000
+#define PHY_IO_BASE 0x10000000
+
+#define VIRTUAL_RAM_BASE 0xa0000000
+#define VIRTUAL_IO_BASE 0xb0000000
+
+#define RAM_SPACE_SIZE 0x10000000
+#define IO_SPACE_SIZE 0x10000000
+
+/* Kernel unmapped, cached 512MB */
+#define KSEG1 0xa0000000
+
+/*
+ * Here we define all the compile-time 'special' virtual
+ * addresses. The point is to have a constant address at
+ * compile time, but to set the physical address only
+ * in the boot process. We allocate these special addresses
+ * from the end of virtual memory (0xfffff000) backwards.
+ * Also this lets us do fail-safe vmalloc(), we
+ * can guarantee that these special addresses and
+ * vmalloc()-ed addresses never overlap.
+ *
+ * these 'compile-time allocated' memory buffers are
+ * fixed-size 4k pages. (or larger if used with an increment
+ * highger than 1) use fixmap_set(idx,phys) to associate
+ * physical memory with fixmap indices.
+ *
+ * TLB entries of such buffers will not be flushed across
+ * task switches.
+ */
+
+/*
+ * on UP currently we will have no trace of the fixmap mechanizm,
+ * no page table allocations, etc. This might change in the
+ * future, say framebuffers for the console driver(s) could be
+ * fix-mapped?
+ */
+enum fixed_addresses {
+#define FIX_N_COLOURS 8
+ FIX_CMAP_BEGIN,
+ FIX_CMAP_END = FIX_CMAP_BEGIN + FIX_N_COLOURS,
+ __end_of_fixed_addresses
+};
+
+/*
+ * used by vmalloc.c.
+ *
+ * Leave one empty page between vmalloc'ed areas and
+ * the start of the fixmap, and leave one page empty
+ * at the top of mem..
+ */
+#define FIXADDR_TOP ((unsigned long)(long)(int)0xfefe0000)
+#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
+
+#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
+#define __virt_to_fix(x) \
+ ((FIXADDR_TOP - ((x) & PAGE_MASK)) >> PAGE_SHIFT)
+
+extern void __this_fixmap_does_not_exist(void);
+
+/*
+ * 'index to address' translation. If anyone tries to use the idx
+ * directly without tranlation, we catch the bug with a NULL-deference
+ * kernel oops. Illegal ranges of incoming indices are caught too.
+ */
+static inline unsigned long fix_to_virt(const unsigned int idx)
+{
+ return __fix_to_virt(idx);
+}
+
+static inline unsigned long virt_to_fix(const unsigned long vaddr)
+{
+ return __virt_to_fix(vaddr);
+}
+
+#endif /* _ASM_SCORE_FIXMAP_H */
--- /dev/null
+#ifndef _ASM_SCORE_FTRACE_H
+#define _ASM_SCORE_FTRACE_H
+
+#endif /* _ASM_SCORE_FTRACE_H */
--- /dev/null
+#ifndef _ASM_SCORE_FUTEX_H
+#define _ASM_SCORE_FUTEX_H
+
+#include <asm-generic/futex.h>
+
+#endif /* _ASM_SCORE_FUTEX_H */
--- /dev/null
+#ifndef _ASM_SCORE_HARDIRQ_H
+#define _ASM_SCORE_HARDIRQ_H
+
+#include <asm-generic/hardirq.h>
+
+#endif /* _ASM_SCORE_HARDIRQ_H */
--- /dev/null
+#ifndef _ASM_SCORE_HW_IRQ_H
+#define _ASM_SCORE_HW_IRQ_H
+
+#endif /* _ASM_SCORE_HW_IRQ_H */
--- /dev/null
+#ifndef _ASM_SCORE_IO_H
+#define _ASM_SCORE_IO_H
+
+#include <asm-generic/io.h>
+
+#define virt_to_bus virt_to_phys
+#define bus_to_virt phys_to_virt
+
+#endif /* _ASM_SCORE_IO_H */
--- /dev/null
+#ifndef _ASM_SCORE_IOCTL_H
+#define _ASM_SCORE_IOCTL_H
+
+#include <asm-generic/ioctl.h>
+
+#endif /* _ASM_SCORE_IOCTL_H */
--- /dev/null
+#ifndef _ASM_SCORE_IOCTLS_H
+#define _ASM_SCORE_IOCTLS_H
+
+#include <asm-generic/ioctls.h>
+
+#endif /* _ASM_SCORE_IOCTLS_H */
--- /dev/null
+#ifndef _ASM_SCORE_IPCBUF_H
+#define _ASM_SCORE_IPCBUF_H
+
+#include <asm-generic/ipcbuf.h>
+
+#endif /* _ASM_SCORE_IPCBUF_H */
--- /dev/null
+#ifndef _ASM_SCORE_IRQ_H
+#define _ASM_SCORE_IRQ_H
+
+#define EXCEPTION_VECTOR_BASE_ADDR 0xa0000000
+#define VECTOR_ADDRESS_OFFSET_MODE4 0
+#define VECTOR_ADDRESS_OFFSET_MODE16 1
+
+#define DEBUG_VECTOR_SIZE (0x4)
+#define DEBUG_VECTOR_BASE_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x1fc)
+
+#define GENERAL_VECTOR_SIZE (0x10)
+#define GENERAL_VECTOR_BASE_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x200)
+
+#define NR_IRQS 64
+#define IRQ_VECTOR_SIZE (0x10)
+#define IRQ_VECTOR_BASE_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x210)
+#define IRQ_VECTOR_END_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x5f0)
+
+#define irq_canonicalize(irq) (irq)
+
+#define IRQ_TIMER (7) /* Timer IRQ number of SPCT6600 */
+
+#endif /* _ASM_SCORE_IRQ_H */
--- /dev/null
+#ifndef _ASM_SCORE_IRQ_REGS_H
+#define _ASM_SCORE_IRQ_REGS_H
+
+#include <asm-generic/irq_regs.h>
+
+#endif /* _ASM_SCORE_IRQ_REGS_H */
--- /dev/null
+#ifndef _ASM_SCORE_IRQFLAGS_H
+#define _ASM_SCORE_IRQFLAGS_H
+
+#ifndef __ASSEMBLY__
+
+#define raw_local_irq_save(x) \
+{ \
+ __asm__ __volatile__( \
+ "mfcr r8, cr0;" \
+ "li r9, 0xfffffffe;" \
+ "nop;" \
+ "mv %0, r8;" \
+ "and r8, r8, r9;" \
+ "mtcr r8, cr0;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ "ldi r9, 0x1;" \
+ "and %0, %0, r9;" \
+ : "=r" (x) \
+ : \
+ : "r8", "r9" \
+ ); \
+}
+
+#define raw_local_irq_restore(x) \
+{ \
+ __asm__ __volatile__( \
+ "mfcr r8, cr0;" \
+ "ldi r9, 0x1;" \
+ "and %0, %0, r9;" \
+ "or r8, r8, %0;" \
+ "mtcr r8, cr0;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ : \
+ : "r"(x) \
+ : "r8", "r9" \
+ ); \
+}
+
+#define raw_local_irq_enable(void) \
+{ \
+ __asm__ __volatile__( \
+ "mfcr\tr8,cr0;" \
+ "nop;" \
+ "nop;" \
+ "ori\tr8,0x1;" \
+ "mtcr\tr8,cr0;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ : \
+ : \
+ : "r8"); \
+}
+
+#define raw_local_irq_disable(void) \
+{ \
+ __asm__ __volatile__( \
+ "mfcr\tr8,cr0;" \
+ "nop;" \
+ "nop;" \
+ "srli\tr8,r8,1;" \
+ "slli\tr8,r8,1;" \
+ "mtcr\tr8,cr0;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ : \
+ : \
+ : "r8"); \
+}
+
+#define raw_local_save_flags(x) \
+{ \
+ __asm__ __volatile__( \
+ "mfcr r8, cr0;" \
+ "nop;" \
+ "nop;" \
+ "mv %0, r8;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ "nop;" \
+ "ldi r9, 0x1;" \
+ "and %0, %0, r9;" \
+ : "=r" (x) \
+ : \
+ : "r8", "r9" \
+ ); \
+}
+
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+ return !(flags & 1);
+}
+
+#endif
+
+#endif /* _ASM_SCORE_IRQFLAGS_H */
--- /dev/null
+#ifndef _ASM_SCORE_KDEBUG_H
+#define _ASM_SCORE_KDEBUG_H
+
+#include <asm-generic/kdebug.h>
+
+#endif /* _ASM_SCORE_KDEBUG_H */
--- /dev/null
+#ifndef _ASM_SCORE_KMAP_TYPES_H
+#define _ASM_SCORE_KMAP_TYPES_H
+
+#include <asm-generic/kmap_types.h>
+
+#endif /* _ASM_SCORE_KMAP_TYPES_H */
--- /dev/null
+#ifndef _ASM_SCORE_LINKAGE_H
+#define _ASM_SCORE_LINKAGE_H
+
+#endif /* _ASM_SCORE_LINKAGE_H */
--- /dev/null
+#ifndef _ASM_SCORE_LOCAL_H
+#define _ASM_SCORE_LOCAL_H
+
+#include <asm-generic/local.h>
+
+#endif /* _ASM_SCORE_LOCAL_H */
--- /dev/null
+#ifndef _ASM_SCORE_MMAN_H
+#define _ASM_SCORE_MMAN_H
+
+#include <asm-generic/mman.h>
+
+#endif /* _ASM_SCORE_MMAN_H */
--- /dev/null
+#ifndef _ASM_SCORE_MMU_H
+#define _ASM_SCORE_MMU_H
+
+typedef unsigned long mm_context_t;
+
+#endif /* _ASM_SCORE_MMU_H */
--- /dev/null
+#ifndef _ASM_SCORE_MMU_CONTEXT_H
+#define _ASM_SCORE_MMU_CONTEXT_H
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <asm-generic/mm_hooks.h>
+
+#include <asm/cacheflush.h>
+#include <asm/tlbflush.h>
+#include <asm/scoreregs.h>
+
+/*
+ * For the fast tlb miss handlers, we keep a per cpu array of pointers
+ * to the current pgd for each processor. Also, the proc. id is stuffed
+ * into the context register.
+ */
+extern unsigned long asid_cache;
+extern unsigned long pgd_current;
+
+#define TLBMISS_HANDLER_SETUP_PGD(pgd) (pgd_current = (unsigned long)(pgd))
+
+#define TLBMISS_HANDLER_SETUP() \
+do { \
+ write_c0_context(0); \
+ TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir) \
+} while (0)
+
+/*
+ * All unused by hardware upper bits will be considered
+ * as a software asid extension.
+ */
+#define ASID_VERSION_MASK 0xfffff000
+#define ASID_FIRST_VERSION 0x1000
+
+/* PEVN --------- VPN ---------- --ASID--- -NA- */
+/* binary: 0000 0000 0000 0000 0000 0000 0001 0000 */
+/* binary: 0000 0000 0000 0000 0000 1111 1111 0000 */
+#define ASID_INC 0x10
+#define ASID_MASK 0xff0
+
+static inline void enter_lazy_tlb(struct mm_struct *mm,
+ struct task_struct *tsk)
+{}
+
+static inline void
+get_new_mmu_context(struct mm_struct *mm)
+{
+ unsigned long asid = asid_cache + ASID_INC;
+
+ if (!(asid & ASID_MASK)) {
+ local_flush_tlb_all(); /* start new asid cycle */
+ if (!asid) /* fix version if needed */
+ asid = ASID_FIRST_VERSION;
+ }
+
+ mm->context = asid;
+ asid_cache = asid;
+}
+
+/*
+ * Initialize the context related info for a new mm_struct
+ * instance.
+ */
+static inline int
+init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+{
+ mm->context = 0;
+ return 0;
+}
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+ struct task_struct *tsk)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ if ((next->context ^ asid_cache) & ASID_VERSION_MASK)
+ get_new_mmu_context(next);
+
+ pevn_set(next->context);
+ TLBMISS_HANDLER_SETUP_PGD(next->pgd);
+ local_irq_restore(flags);
+}
+
+/*
+ * Destroy context related info for an mm_struct that is about
+ * to be put to rest.
+ */
+static inline void destroy_context(struct mm_struct *mm)
+{}
+
+static inline void
+deactivate_mm(struct task_struct *task, struct mm_struct *mm)
+{}
+
+/*
+ * After we have set current->mm to a new value, this activates
+ * the context for the new mm so we see the new mappings.
+ */
+static inline void
+activate_mm(struct mm_struct *prev, struct mm_struct *next)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ get_new_mmu_context(next);
+ pevn_set(next->context);
+ TLBMISS_HANDLER_SETUP_PGD(next->pgd);
+ local_irq_restore(flags);
+}
+
+#endif /* _ASM_SCORE_MMU_CONTEXT_H */
--- /dev/null
+#ifndef _ASM_SCORE_MODULE_H
+#define _ASM_SCORE_MODULE_H
+
+#include <linux/list.h>
+#include <asm/uaccess.h>
+
+struct mod_arch_specific {
+ /* Data Bus Error exception tables */
+ struct list_head dbe_list;
+ const struct exception_table_entry *dbe_start;
+ const struct exception_table_entry *dbe_end;
+};
+
+typedef uint8_t Elf64_Byte; /* Type for a 8-bit quantity. */
+
+#define Elf_Shdr Elf32_Shdr
+#define Elf_Sym Elf32_Sym
+#define Elf_Ehdr Elf32_Ehdr
+#define Elf_Addr Elf32_Addr
+
+/* Given an address, look for it in the exception tables. */
+#ifdef CONFIG_MODULES
+const struct exception_table_entry *search_module_dbetables(unsigned long addr);
+#else
+static inline const struct exception_table_entry
+*search_module_dbetables(unsigned long addr)
+{
+ return NULL;
+}
+#endif
+
+#define MODULE_PROC_FAMILY "SCORE7"
+#define MODULE_KERNEL_TYPE "32BIT "
+#define MODULE_KERNEL_SMTC ""
+
+#define MODULE_ARCH_VERMAGIC \
+ MODULE_PROC_FAMILY MODULE_KERNEL_TYPE MODULE_KERNEL_SMTC
+
+#endif /* _ASM_SCORE_MODULE_H */
--- /dev/null
+#ifndef _ASM_SCORE_MSGBUF_H
+#define _ASM_SCORE_MSGBUF_H
+
+#include <asm-generic/msgbuf.h>
+
+#endif /* _ASM_SCORE_MSGBUF_H */
--- /dev/null
+#ifndef _ASM_SCORE_MUTEX_H
+#define _ASM_SCORE_MUTEX_H
+
+#include <asm-generic/mutex-dec.h>
+
+#endif /* _ASM_SCORE_MUTEX_H */
--- /dev/null
+#ifndef _ASM_SCORE_PAGE_H
+#define _ASM_SCORE_PAGE_H
+
+#include <linux/pfn.h>
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT (12)
+#define PAGE_SIZE (1UL << PAGE_SHIFT)
+#define PAGE_MASK (~(PAGE_SIZE-1))
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+#define PAGE_UP(addr) (((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1)))
+#define PAGE_DOWN(addr) ((addr)&(~((PAGE_SIZE)-1)))
+
+/* align addr on a size boundary - adjust address up/down if needed */
+#define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((size)-1)))
+#define _ALIGN_DOWN(addr, size) ((addr)&(~((size)-1)))
+
+/* align addr on a size boundary - adjust address up if needed */
+#define _ALIGN(addr, size) _ALIGN_UP(addr, size)
+
+/*
+ * PAGE_OFFSET -- the first address of the first page of memory. When not
+ * using MMU this corresponds to the first free page in physical memory (aligned
+ * on a page boundary).
+ */
+#define PAGE_OFFSET (0xA0000000UL)
+
+#define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE)
+#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
+
+#define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE)
+#define copy_user_page(vto, vfrom, vaddr, topg) \
+ memcpy((vto), (vfrom), PAGE_SIZE)
+
+/*
+ * These are used to make use of C type-checking..
+ */
+
+typedef struct { unsigned long pte; } pte_t; /* page table entry */
+typedef struct { unsigned long pgd; } pgd_t; /* PGD table entry */
+typedef struct { unsigned long pgprot; } pgprot_t;
+typedef struct page *pgtable_t;
+
+#define pte_val(x) ((x).pte)
+#define pgd_val(x) ((x).pgd)
+#define pgprot_val(x) ((x).pgprot)
+
+#define __pte(x) ((pte_t) { (x) })
+#define __pgd(x) ((pgd_t) { (x) })
+#define __pgprot(x) ((pgprot_t) { (x) })
+
+extern unsigned long max_low_pfn;
+extern unsigned long min_low_pfn;
+extern unsigned long max_pfn;
+
+#define __pa(vaddr) ((unsigned long) (vaddr))
+#define __va(paddr) ((void *) (paddr))
+
+#define phys_to_pfn(phys) (PFN_DOWN(phys))
+#define pfn_to_phys(pfn) (PFN_PHYS(pfn))
+
+#define virt_to_pfn(vaddr) (phys_to_pfn((__pa(vaddr))))
+#define pfn_to_virt(pfn) __va(pfn_to_phys((pfn)))
+
+#define virt_to_page(vaddr) (pfn_to_page(virt_to_pfn(vaddr)))
+#define page_to_virt(page) (pfn_to_virt(page_to_pfn(page)))
+
+#define page_to_phys(page) (pfn_to_phys(page_to_pfn(page)))
+#define page_to_bus(page) (page_to_phys(page))
+#define phys_to_page(paddr) (pfn_to_page(phys_to_pfn(paddr)))
+
+#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_mapnr)
+
+#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
+
+#endif /* __ASSEMBLY__ */
+
+#define virt_addr_valid(vaddr) (pfn_valid(virt_to_pfn(vaddr)))
+
+#endif /* __KERNEL__ */
+
+#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
+ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#include <asm-generic/memory_model.h>
+#include <asm-generic/getorder.h>
+
+#endif /* _ASM_SCORE_PAGE_H */
--- /dev/null
+#ifndef _ASM_SCORE_PARAM_H
+#define _ASM_SCORE_PARAM_H
+
+#include <asm-generic/param.h>
+
+#endif /* _ASM_SCORE_PARAM_H */
--- /dev/null
+#ifndef _ASM_SCORE_PCI_H
+#define _ASM_SCORE_PCI_H
+
+#endif /* _ASM_SCORE_PCI_H */
--- /dev/null
+#ifndef _ASM_SCORE_PERCPU_H
+#define _ASM_SCORE_PERCPU_H
+
+#include <asm-generic/percpu.h>
+
+#endif /* _ASM_SCORE_PERCPU_H */
--- /dev/null
+#ifndef _ASM_SCORE_PGALLOC_H
+#define _ASM_SCORE_PGALLOC_H
+
+#include <linux/mm.h>
+
+static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
+ pte_t *pte)
+{
+ set_pmd(pmd, __pmd((unsigned long)pte));
+}
+
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
+ pgtable_t pte)
+{
+ set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
+}
+
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+ pgd_t *ret, *init;
+
+ ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
+ if (ret) {
+ init = pgd_offset(&init_mm, 0UL);
+ pgd_init((unsigned long)ret);
+ memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
+ (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
+ }
+
+ return ret;
+}
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+ free_pages((unsigned long)pgd, PGD_ORDER);
+}
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+ unsigned long address)
+{
+ pte_t *pte;
+
+ pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO,
+ PTE_ORDER);
+
+ return pte;
+}
+
+static inline struct page *pte_alloc_one(struct mm_struct *mm,
+ unsigned long address)
+{
+ struct page *pte;
+
+ pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
+ if (pte) {
+ clear_highpage(pte);
+ pgtable_page_ctor(pte);
+ }
+ return pte;
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+ free_pages((unsigned long)pte, PTE_ORDER);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
+{
+ pgtable_page_dtor(pte);
+ __free_pages(pte, PTE_ORDER);
+}
+
+#define __pte_free_tlb(tlb, pte) \
+do { \
+ pgtable_page_dtor(pte); \
+ tlb_remove_page((tlb), pte); \
+} while (0)
+
+#define check_pgt_cache() do {} while (0)
+
+#endif /* _ASM_SCORE_PGALLOC_H */
--- /dev/null
+#ifndef _ASM_SCORE_PGTABLE_BITS_H
+#define _ASM_SCORE_PGTABLE_BITS_H
+
+#define _PAGE_ACCESSED (1<<5) /* implemented in software */
+#define _PAGE_READ (1<<6) /* implemented in software */
+#define _PAGE_WRITE (1<<7) /* implemented in software */
+#define _PAGE_PRESENT (1<<9) /* implemented in software */
+#define _PAGE_MODIFIED (1<<10) /* implemented in software */
+#define _PAGE_FILE (1<<10)
+
+#define _PAGE_GLOBAL (1<<0)
+#define _PAGE_VALID (1<<1)
+#define _PAGE_SILENT_READ (1<<1) /* synonym */
+#define _PAGE_DIRTY (1<<2) /* Write bit */
+#define _PAGE_SILENT_WRITE (1<<2)
+#define _PAGE_CACHE (1<<3) /* cache */
+#define _CACHE_MASK (1<<3)
+#define _PAGE_BUFFERABLE (1<<4) /*Fallow Spec. */
+
+#define __READABLE (_PAGE_READ | _PAGE_SILENT_READ | _PAGE_ACCESSED)
+#define __WRITEABLE (_PAGE_WRITE | _PAGE_SILENT_WRITE | _PAGE_MODIFIED)
+#define _PAGE_CHG_MASK \
+ (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED | _PAGE_CACHE)
+
+#endif /* _ASM_SCORE_PGTABLE_BITS_H */
--- /dev/null
+#ifndef _ASM_SCORE_PGTABLE_H
+#define _ASM_SCORE_PGTABLE_H
+
+#include <linux/const.h>
+#include <asm-generic/pgtable-nopmd.h>
+
+#include <asm/fixmap.h>
+#include <asm/setup.h>
+#include <asm/pgtable-bits.h>
+
+extern void load_pgd(unsigned long pg_dir);
+extern pte_t invalid_pte_table[PAGE_SIZE/sizeof(pte_t)];
+
+/* PGDIR_SHIFT determines what a third-level page table entry can map */
+#define PGDIR_SHIFT 22
+#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
+#define PGDIR_MASK (~(PGDIR_SIZE - 1))
+
+/*
+ * Entries per page directory level: we use two-level, so
+ * we don't really have any PUD/PMD directory physically.
+ */
+#define PGD_ORDER 0
+#define PTE_ORDER 0
+
+#define PTRS_PER_PGD 1024
+#define PTRS_PER_PTE 1024
+
+#define USER_PTRS_PER_PGD (0x80000000UL/PGDIR_SIZE)
+#define FIRST_USER_ADDRESS 0
+
+#define VMALLOC_START (0xc0000000UL)
+
+#define PKMAP_BASE (0xfd000000UL)
+
+#define VMALLOC_END (FIXADDR_START - 2*PAGE_SIZE)
+
+#define pte_ERROR(e) \
+ printk(KERN_ERR "%s:%d: bad pte %08lx.\n", \
+ __FILE__, __LINE__, pte_val(e))
+#define pgd_ERROR(e) \
+ printk(KERN_ERR "%s:%d: bad pgd %08lx.\n", \
+ __FILE__, __LINE__, pgd_val(e))
+
+/*
+ * Empty pgd/pmd entries point to the invalid_pte_table.
+ */
+static inline int pmd_none(pmd_t pmd)
+{
+ return pmd_val(pmd) == (unsigned long) invalid_pte_table;
+}
+
+#define pmd_bad(pmd) (pmd_val(pmd) & ~PAGE_MASK)
+
+static inline int pmd_present(pmd_t pmd)
+{
+ return pmd_val(pmd) != (unsigned long) invalid_pte_table;
+}
+
+static inline void pmd_clear(pmd_t *pmdp)
+{
+ pmd_val(*pmdp) = ((unsigned long) invalid_pte_table);
+}
+
+#define pte_page(x) pfn_to_page(pte_pfn(x))
+#define pte_pfn(x) ((unsigned long)((x).pte >> PAGE_SHIFT))
+#define pfn_pte(pfn, prot) \
+ __pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
+
+#define __pgd_offset(address) pgd_index(address)
+#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
+#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
+
+/* to find an entry in a kernel page-table-directory */
+#define pgd_offset_k(address) pgd_offset(&init_mm, address)
+#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
+
+/* to find an entry in a page-table-directory */
+#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
+
+/* Find an entry in the third-level page table.. */
+#define __pte_offset(address) \
+ (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
+#define pte_offset(dir, address) \
+ ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
+#define pte_offset_kernel(dir, address) \
+ ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
+
+#define pte_offset_map(dir, address) \
+ ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
+#define pte_offset_map_nested(dir, address) \
+ ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
+#define pte_unmap(pte) ((void)(pte))
+#define pte_unmap_nested(pte) ((void)(pte))
+
+/*
+ * Bits 9(_PAGE_PRESENT) and 10(_PAGE_FILE)are taken,
+ * split up 30 bits of offset into this range:
+ */
+#define PTE_FILE_MAX_BITS 30
+#define pte_to_pgoff(_pte) \
+ (((_pte).pte & 0x1ff) | (((_pte).pte >> 11) << 9))
+#define pgoff_to_pte(off) \
+ ((pte_t) {((off) & 0x1ff) | (((off) >> 9) << 11) | _PAGE_FILE})
+#define __pte_to_swp_entry(pte) \
+ ((swp_entry_t) { pte_val(pte)})
+#define __swp_entry_to_pte(x) ((pte_t) {(x).val})
+
+#define pmd_page(pmd) virt_to_page(__va(pmd_val(pmd)))
+#define mk_pte(page, prot) pfn_pte(page_to_pfn(page), prot)
+static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
+
+#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
+#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
+#define pte_clear(mm, addr, xp) \
+ do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
+
+#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
+ remap_pfn_range(vma, vaddr, pfn, size, prot)
+
+/*
+ * The "pgd_xxx()" functions here are trivial for a folded two-level
+ * setup: the pgd is never bad, and a pmd always exists (as it's folded
+ * into the pgd entry)
+ */
+#define pgd_present(pgd) (1)
+#define pgd_none(pgd) (0)
+#define pgd_bad(pgd) (0)
+#define pgd_clear(pgdp) do { } while (0)
+
+#define kern_addr_valid(addr) (1)
+#define pmd_offset(a, b) ((void *) 0)
+#define pmd_page_vaddr(pmd) pmd_val(pmd)
+
+#define pte_none(pte) (!(pte_val(pte) & ~_PAGE_GLOBAL))
+#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)
+
+#define pud_offset(pgd, address) ((pud_t *) pgd)
+
+#define PAGE_NONE __pgprot(_PAGE_PRESENT | _PAGE_CACHE)
+#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
+ _PAGE_CACHE)
+#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_CACHE)
+#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_CACHE)
+#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
+ _PAGE_GLOBAL | _PAGE_CACHE)
+#define PAGE_KERNEL_UNCACHED __pgprot(_PAGE_PRESENT | __READABLE | \
+ __WRITEABLE | _PAGE_GLOBAL & ~_PAGE_CACHE)
+
+#define __P000 PAGE_NONE
+#define __P001 PAGE_READONLY
+#define __P010 PAGE_COPY
+#define __P011 PAGE_COPY
+#define __P100 PAGE_READONLY
+#define __P101 PAGE_READONLY
+#define __P110 PAGE_COPY
+#define __P111 PAGE_COPY
+
+#define __S000 PAGE_NONE
+#define __S001 PAGE_READONLY
+#define __S010 PAGE_SHARED
+#define __S011 PAGE_SHARED
+#define __S100 PAGE_READONLY
+#define __S101 PAGE_READONLY
+#define __S110 PAGE_SHARED
+#define __S111 PAGE_SHARED
+
+#define pgprot_noncached(x) (x)
+
+#define __swp_type(x) (0)
+#define __swp_offset(x) (0)
+#define __swp_entry(typ, off) ((swp_entry_t) { ((typ) | ((off) << 7)) })
+
+#define ZERO_PAGE(vaddr) ({ BUG(); NULL; })
+
+#define swapper_pg_dir ((pgd_t *) NULL)
+
+#define pgtable_cache_init() do {} while (0)
+
+#define arch_enter_lazy_cpu_mode() do {} while (0)
+
+static inline int pte_write(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_WRITE;
+}
+
+static inline int pte_dirty(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_MODIFIED;
+}
+
+static inline int pte_young(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_ACCESSED;
+}
+
+static inline int pte_file(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_FILE;
+}
+
+#define pte_special(pte) (0)
+
+static inline pte_t pte_wrprotect(pte_t pte)
+{
+ pte_val(pte) &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE);
+ return pte;
+}
+
+static inline pte_t pte_mkclean(pte_t pte)
+{
+ pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE);
+ return pte;
+}
+
+static inline pte_t pte_mkold(pte_t pte)
+{
+ pte_val(pte) &= ~(_PAGE_ACCESSED|_PAGE_SILENT_READ);
+ return pte;
+}
+
+static inline pte_t pte_mkwrite(pte_t pte)
+{
+ pte_val(pte) |= _PAGE_WRITE;
+ if (pte_val(pte) & _PAGE_MODIFIED)
+ pte_val(pte) |= _PAGE_SILENT_WRITE;
+ return pte;
+}
+
+static inline pte_t pte_mkdirty(pte_t pte)
+{
+ pte_val(pte) |= _PAGE_MODIFIED;
+ if (pte_val(pte) & _PAGE_WRITE)
+ pte_val(pte) |= _PAGE_SILENT_WRITE;
+ return pte;
+}
+
+static inline pte_t pte_mkyoung(pte_t pte)
+{
+ pte_val(pte) |= _PAGE_ACCESSED;
+ if (pte_val(pte) & _PAGE_READ)
+ pte_val(pte) |= _PAGE_SILENT_READ;
+ return pte;
+}
+
+#define set_pmd(pmdptr, pmdval) \
+ do { *(pmdptr) = (pmdval); } while (0)
+#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)
+
+extern unsigned long pgd_current;
+extern void paging_init(void);
+
+static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
+{
+ return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot));
+}
+
+extern void __update_tlb(struct vm_area_struct *vma,
+ unsigned long address, pte_t pte);
+extern void __update_cache(struct vm_area_struct *vma,
+ unsigned long address, pte_t pte);
+
+static inline void update_mmu_cache(struct vm_area_struct *vma,
+ unsigned long address, pte_t pte)
+{
+ __update_tlb(vma, address, pte);
+ __update_cache(vma, address, pte);
+}
+
+#ifndef __ASSEMBLY__
+#include <asm-generic/pgtable.h>
+
+void setup_memory(void);
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_SCORE_PGTABLE_H */
--- /dev/null
+#ifndef _ASM_SCORE_POLL_H
+#define _ASM_SCORE_POLL_H
+
+#include <asm-generic/poll.h>
+
+#endif /* _ASM_SCORE_POLL_H */
--- /dev/null
+#ifndef _ASM_SCORE_POSIX_TYPES_H
+#define _ASM_SCORE_POSIX_TYPES_H
+
+#include <asm-generic/posix_types.h>
+
+#endif /* _ASM_SCORE_POSIX_TYPES_H */
--- /dev/null
+#ifndef _ASM_SCORE_PROCESSOR_H
+#define _ASM_SCORE_PROCESSOR_H
+
+#include <linux/cpumask.h>
+#include <linux/threads.h>
+
+#include <asm/segment.h>
+
+struct task_struct;
+
+/*
+ * System setup and hardware flags..
+ */
+extern void (*cpu_wait)(void);
+
+extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
+extern unsigned long thread_saved_pc(struct task_struct *tsk);
+extern void start_thread(struct pt_regs *regs,
+ unsigned long pc, unsigned long sp);
+extern unsigned long get_wchan(struct task_struct *p);
+
+/*
+ * Return current * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ __label__ _l; _l: &&_l; })
+
+#define cpu_relax() barrier()
+#define release_thread(thread) do {} while (0)
+#define prepare_to_copy(tsk) do {} while (0)
+
+/*
+ * User space process size: 2GB. This is hardcoded into a few places,
+ * so don't change it unless you know what you are doing.
+ */
+#define TASK_SIZE 0x7fff8000UL
+
+/*
+ * This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE ((TASK_SIZE / 3) & ~(PAGE_SIZE))
+
+#ifdef __KERNEL__
+#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX TASK_SIZE
+#endif
+
+/*
+ * If you change thread_struct remember to change the #defines below too!
+ */
+struct thread_struct {
+ unsigned long reg0, reg2, reg3;
+ unsigned long reg12, reg13, reg14, reg15, reg16;
+ unsigned long reg17, reg18, reg19, reg20, reg21;
+
+ unsigned long cp0_psr;
+ unsigned long cp0_ema; /* Last user fault */
+ unsigned long cp0_badvaddr; /* Last user fault */
+ unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */
+ unsigned long error_code;
+ unsigned long trap_no;
+
+ unsigned long mflags;
+ unsigned long reg29;
+
+ unsigned long single_step;
+ unsigned long ss_nextcnt;
+
+ unsigned long insn1_type;
+ unsigned long addr1;
+ unsigned long insn1;
+
+ unsigned long insn2_type;
+ unsigned long addr2;
+ unsigned long insn2;
+
+ mm_segment_t current_ds;
+};
+
+#define INIT_THREAD { \
+ .reg0 = 0, \
+ .reg2 = 0, \
+ .reg3 = 0, \
+ .reg12 = 0, \
+ .reg13 = 0, \
+ .reg14 = 0, \
+ .reg15 = 0, \
+ .reg16 = 0, \
+ .reg17 = 0, \
+ .reg18 = 0, \
+ .reg19 = 0, \
+ .reg20 = 0, \
+ .reg21 = 0, \
+ .cp0_psr = 0, \
+ .error_code = 0, \
+ .trap_no = 0, \
+}
+
+#define kstk_tos(tsk) \
+ ((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32)
+#define task_pt_regs(tsk) ((struct pt_regs *)kstk_tos(tsk) - 1)
+
+#define KSTK_EIP(tsk) (task_pt_regs(tsk)->cp0_epc)
+#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29])
+
+#endif /* _ASM_SCORE_PROCESSOR_H */
--- /dev/null
+#ifndef _ASM_SCORE_PTRACE_H
+#define _ASM_SCORE_PTRACE_H
+
+#define PTRACE_GETREGS 12
+#define PTRACE_SETREGS 13
+
+#define PC 32
+#define CONDITION 33
+#define ECR 34
+#define EMA 35
+#define CEH 36
+#define CEL 37
+#define COUNTER 38
+#define LDCR 39
+#define STCR 40
+#define PSR 41
+
+#define SINGLESTEP16_INSN 0x7006
+#define SINGLESTEP32_INSN 0x840C8000
+#define BREAKPOINT16_INSN 0x7002 /* work on SPG300 */
+#define BREAKPOINT32_INSN 0x84048000 /* work on SPG300 */
+
+/* Define instruction mask */
+#define INSN32_MASK 0x80008000
+
+#define J32 0x88008000 /* 1_00010_0000000000_1_000000000000000 */
+#define J32M 0xFC008000 /* 1_11111_0000000000_1_000000000000000 */
+
+#define B32 0x90008000 /* 1_00100_0000000000_1_000000000000000 */
+#define B32M 0xFC008000
+#define BL32 0x90008001 /* 1_00100_0000000000_1_000000000000001 */
+#define BL32M B32
+#define BR32 0x80008008 /* 1_00000_0000000000_1_00000000_000100_0 */
+#define BR32M 0xFFE0807E
+#define BRL32 0x80008009 /* 1_00000_0000000000_1_00000000_000100_1 */
+#define BRL32M BR32M
+
+#define B32_SET (J32 | B32 | BL32 | BR32 | BRL32)
+
+#define J16 0x3000 /* 0_011_....... */
+#define J16M 0xF000
+#define B16 0x4000 /* 0_100_....... */
+#define B16M 0xF000
+#define BR16 0x0004 /* 0_000.......0100 */
+#define BR16M 0xF00F
+#define B16_SET (J16 | B16 | BR16)
+
+
+/*
+ * This struct defines the way the registers are stored on the stack during a
+ * system call/exception. As usual the registers k0/k1 aren't being saved.
+ */
+struct pt_regs {
+ unsigned long pad0[6];
+ unsigned long orig_r4;
+ unsigned long orig_r7;
+ unsigned long regs[32];
+
+ unsigned long cel;
+ unsigned long ceh;
+
+ unsigned long sr0; /* cnt */
+ unsigned long sr1; /* lcr */
+ unsigned long sr2; /* scr */
+
+ unsigned long cp0_epc;
+ unsigned long cp0_ema;
+ unsigned long cp0_psr;
+ unsigned long cp0_ecr;
+ unsigned long cp0_condition;
+
+ long is_syscall;
+};
+
+#ifdef __KERNEL__
+
+/*
+ * Does the process account for user or for system time?
+ */
+#define user_mode(regs) ((regs->cp0_psr & 8) == 8)
+
+#define instruction_pointer(regs) ((unsigned long)(regs)->cp0_epc)
+#define profile_pc(regs) instruction_pointer(regs)
+
+extern void do_syscall_trace(struct pt_regs *regs, int entryexit);
+extern int read_tsk_long(struct task_struct *, unsigned long, unsigned long *);
+extern int read_tsk_short(struct task_struct *, unsigned long,
+ unsigned short *);
+
+#define arch_has_single_step() (1)
+extern void user_enable_single_step(struct task_struct *);
+extern void user_disable_single_step(struct task_struct *);
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_SCORE_PTRACE_H */
--- /dev/null
+#ifndef _ASM_SCORE_RESOURCE_H
+#define _ASM_SCORE_RESOURCE_H
+
+#include <asm-generic/resource.h>
+
+#endif /* _ASM_SCORE_RESOURCE_H */
--- /dev/null
+#ifndef _ASM_SCORE_SCATTERLIST_H
+#define _ASM_SCORE_SCATTERLIST_H
+
+#include <asm-generic/scatterlist.h>
+
+#endif /* _ASM_SCORE_SCATTERLIST_H */
--- /dev/null
+#ifndef _ASM_SCORE_SCOREREGS_H
+#define _ASM_SCORE_SCOREREGS_H
+
+#include <linux/linkage.h>
+
+/* TIMER register */
+#define TIME0BASE 0x96080000
+#define P_TIMER0_CTRL (TIME0BASE + 0x00)
+#define P_TIMER0_CPP_CTRL (TIME0BASE + 0x04)
+#define P_TIMER0_PRELOAD (TIME0BASE + 0x08)
+#define P_TIMER0_CPP_REG (TIME0BASE + 0x0C)
+#define P_TIMER0_UPCNT (TIME0BASE + 0x10)
+
+/* Timer Controller Register */
+/* bit 0 Timer enable */
+#define TMR_DISABLE 0x0000
+#define TMR_ENABLE 0x0001
+
+/* bit 1 Interrupt enable */
+#define TMR_IE_DISABLE 0x0000
+#define TMR_IE_ENABLE 0x0002
+
+/* bit 2 Output enable */
+#define TMR_OE_DISABLE 0x0004
+#define TMR_OE_ENABLE 0x0000
+
+/* bit4 Up/Down counting selection */
+#define TMR_UD_DOWN 0x0000
+#define TMR_UD_UP 0x0010
+
+/* bit5 Up/Down counting control selection */
+#define TMR_UDS_UD 0x0000
+#define TMR_UDS_EXTUD 0x0020
+
+/* bit6 Time output mode */
+#define TMR_OM_TOGGLE 0x0000
+#define TMR_OM_PILSE 0x0040
+
+/* bit 8..9 External input active edge selection */
+#define TMR_ES_PE 0x0000
+#define TMR_ES_NE 0x0100
+#define TMR_ES_BOTH 0x0200
+
+/* bit 10..11 Operating mode */
+#define TMR_M_FREE 0x0000 /* free running timer mode */
+#define TMR_M_PERIODIC 0x0400 /* periodic timer mode */
+#define TMR_M_FC 0x0800 /* free running counter mode */
+#define TMR_M_PC 0x0c00 /* periodic counter mode */
+
+#define SYSTEM_CLOCK (27*1000000/4) /* 27 MHz */
+#endif /* _ASM_SCORE_SCOREREGS_H */
--- /dev/null
+#ifndef _ASM_SCORE_SECTIONS_H
+#define _ASM_SCORE_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif /* _ASM_SCORE_SECTIONS_H */
--- /dev/null
+#ifndef _ASM_SCORE_SEGMENT_H
+#define _ASM_SCORE_SEGMENT_H
+
+#ifndef __ASSEMBLY__
+
+typedef struct {
+ unsigned long seg;
+} mm_segment_t;
+
+#define KERNEL_DS ((mm_segment_t){0})
+#define USER_DS KERNEL_DS
+
+# define get_ds() (KERNEL_DS)
+# define get_fs() (current_thread_info()->addr_limit)
+# define set_fs(x) \
+ do { current_thread_info()->addr_limit = (x); } while (0)
+
+# define segment_eq(a, b) ((a).seg == (b).seg)
+
+# endif /* __ASSEMBLY__ */
+#endif /* _ASM_SCORE_SEGMENT_H */
--- /dev/null
+#ifndef _ASM_SCORE_SEMBUF_H
+#define _ASM_SCORE_SEMBUF_H
+
+#include <asm-generic/sembuf.h>
+
+#endif /* _ASM_SCORE_SEMBUF_H */
--- /dev/null
+#ifndef _ASM_SCORE_SETUP_H
+#define _ASM_SCORE_SETUP_H
+
+#define COMMAND_LINE_SIZE 256
+#define MEM_SIZE 0x2000000
+
+#ifdef __KERNEL__
+
+extern void pagetable_init(void);
+extern void pgd_init(unsigned long page);
+
+extern void setup_early_printk(void);
+extern void cpu_cache_init(void);
+extern void tlb_init(void);
+
+extern void handle_nmi(void);
+extern void handle_adelinsn(void);
+extern void handle_adedata(void);
+extern void handle_ibe(void);
+extern void handle_pel(void);
+extern void handle_sys(void);
+extern void handle_ccu(void);
+extern void handle_ri(void);
+extern void handle_tr(void);
+extern void handle_ades(void);
+extern void handle_cee(void);
+extern void handle_cpe(void);
+extern void handle_dve(void);
+extern void handle_dbe(void);
+extern void handle_reserved(void);
+extern void handle_tlb_refill(void);
+extern void handle_tlb_invaild(void);
+extern void handle_mod(void);
+extern void debug_exception_vector(void);
+extern void general_exception_vector(void);
+extern void interrupt_exception_vector(void);
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_SCORE_SETUP_H */
--- /dev/null
+#ifndef _ASM_SCORE_SHMBUF_H
+#define _ASM_SCORE_SHMBUF_H
+
+#include <asm-generic/shmbuf.h>
+
+#endif /* _ASM_SCORE_SHMBUF_H */
--- /dev/null
+#ifndef _ASM_SCORE_SHMPARAM_H
+#define _ASM_SCORE_SHMPARAM_H
+
+#include <asm-generic/shmparam.h>
+
+#endif /* _ASM_SCORE_SHMPARAM_H */
--- /dev/null
+#ifndef _ASM_SCORE_SIGCONTEXT_H
+#define _ASM_SCORE_SIGCONTEXT_H
+
+/*
+ * Keep this struct definition in sync with the sigcontext fragment
+ * in arch/score/tools/offset.c
+ */
+struct sigcontext {
+ unsigned int sc_regmask;
+ unsigned int sc_psr;
+ unsigned int sc_condition;
+ unsigned long sc_pc;
+ unsigned long sc_regs[32];
+ unsigned int sc_ssflags;
+ unsigned int sc_mdceh;
+ unsigned int sc_mdcel;
+ unsigned int sc_ecr;
+ unsigned long sc_ema;
+ unsigned long sc_sigset[4];
+};
+
+#endif /* _ASM_SCORE_SIGCONTEXT_H */
--- /dev/null
+#ifndef _ASM_SCORE_SIGINFO_H
+#define _ASM_SCORE_SIGINFO_H
+
+#include <asm-generic/siginfo.h>
+
+#endif /* _ASM_SCORE_SIGINFO_H */
--- /dev/null
+#ifndef _ASM_SCORE_SIGNAL_H
+#define _ASM_SCORE_SIGNAL_H
+
+#include <asm-generic/signal.h>
+
+#endif /* _ASM_SCORE_SIGNAL_H */
--- /dev/null
+#ifndef _ASM_SCORE_SOCKET_H
+#define _ASM_SCORE_SOCKET_H
+
+#include <asm-generic/socket.h>
+
+#endif /* _ASM_SCORE_SOCKET_H */
--- /dev/null
+#ifndef _ASM_SCORE_SOCKIOS_H
+#define _ASM_SCORE_SOCKIOS_H
+
+#include <asm-generic/sockios.h>
+
+#endif /* _ASM_SCORE_SOCKIOS_H */
--- /dev/null
+#ifndef _ASM_SCORE_STAT_H
+#define _ASM_SCORE_STAT_H
+
+#include <asm-generic/stat.h>
+
+#endif /* _ASM_SCORE_STAT_H */
--- /dev/null
+#ifndef _ASM_SCORE_STATFS_H
+#define _ASM_SCORE_STATFS_H
+
+#include <asm-generic/statfs.h>
+
+#endif /* _ASM_SCORE_STATFS_H */
--- /dev/null
+#ifndef _ASM_SCORE_STRING_H
+#define _ASM_SCORE_STRING_H
+
+extern void *memset(void *__s, int __c, size_t __count);
+extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
+extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
+
+#endif /* _ASM_SCORE_STRING_H */
--- /dev/null
+#ifndef _ASM_SCORE_SWAB_H
+#define _ASM_SCORE_SWAB_H
+
+#include <asm-generic/swab.h>
+
+#endif /* _ASM_SCORE_SWAB_H */
--- /dev/null
+#ifndef _ASM_SCORE_SYSCALLS_H
+#define _ASM_SCORE_SYSCALLS_H
+
+asmlinkage long score_clone(struct pt_regs *regs);
+asmlinkage long score_execve(struct pt_regs *regs);
+asmlinkage long score_sigaltstack(struct pt_regs *regs);
+asmlinkage long score_rt_sigreturn(struct pt_regs *regs);
+
+#include <asm-generic/syscalls.h>
+
+#endif /* _ASM_SCORE_SYSCALLS_H */
--- /dev/null
+#ifndef _ASM_SCORE_SYSTEM_H
+#define _ASM_SCORE_SYSTEM_H
+
+#include <linux/types.h>
+#include <linux/irqflags.h>
+
+struct pt_regs;
+struct task_struct;
+
+extern void *resume(void *last, void *next, void *next_ti);
+
+#define switch_to(prev, next, last) \
+do { \
+ (last) = resume(prev, next, task_thread_info(next)); \
+} while (0)
+
+#define finish_arch_switch(prev) do {} while (0)
+
+typedef void (*vi_handler_t)(void);
+extern unsigned long arch_align_stack(unsigned long sp);
+
+#define mb() barrier()
+#define rmb() barrier()
+#define wmb() barrier()
+#define smp_mb() barrier()
+#define smp_rmb() barrier()
+#define smp_wmb() barrier()
+
+#define read_barrier_depends() do {} while (0)
+#define smp_read_barrier_depends() do {} while (0)
+
+#define set_mb(var, value) do {var = value; wmb(); } while (0)
+
+#define __HAVE_ARCH_CMPXCHG 1
+
+#include <asm-generic/cmpxchg-local.h>
+
+#ifndef __ASSEMBLY__
+
+struct __xchg_dummy { unsigned long a[100]; };
+#define __xg(x) ((struct __xchg_dummy *)(x))
+
+static inline
+unsigned long __xchg(volatile unsigned long *m, unsigned long val)
+{
+ unsigned long retval;
+ unsigned long flags;
+
+ local_irq_save(flags);
+ retval = *m;
+ *m = val;
+ local_irq_restore(flags);
+ return retval;
+}
+
+#define xchg(ptr, v) \
+ ((__typeof__(*(ptr))) __xchg((unsigned long *)(ptr), \
+ (unsigned long)(v)))
+
+static inline unsigned long __cmpxchg(volatile unsigned long *m,
+ unsigned long old, unsigned long new)
+{
+ unsigned long retval;
+ unsigned long flags;
+
+ local_irq_save(flags);
+ retval = *m;
+ if (retval == old)
+ *m = new;
+ local_irq_restore(flags);
+ return retval;
+}
+
+#define cmpxchg(ptr, o, n) \
+ ((__typeof__(*(ptr))) __cmpxchg((unsigned long *)(ptr), \
+ (unsigned long)(o), \
+ (unsigned long)(n)))
+
+extern void __die(const char *, struct pt_regs *, const char *,
+ const char *, unsigned long) __attribute__((noreturn));
+extern void __die_if_kernel(const char *, struct pt_regs *, const char *,
+ const char *, unsigned long);
+
+#define die(msg, regs) \
+ __die(msg, regs, __FILE__ ":", __func__, __LINE__)
+#define die_if_kernel(msg, regs) \
+ __die_if_kernel(msg, regs, __FILE__ ":", __func__, __LINE__)
+
+#endif /* !__ASSEMBLY__ */
+#endif /* _ASM_SCORE_SYSTEM_H */
--- /dev/null
+#ifndef _ASM_SCORE_TERMBITS_H
+#define _ASM_SCORE_TERMBITS_H
+
+#include <asm-generic/termbits.h>
+
+#endif /* _ASM_SCORE_TERMBITS_H */
--- /dev/null
+#ifndef _ASM_SCORE_TERMIOS_H
+#define _ASM_SCORE_TERMIOS_H
+
+#include <asm-generic/termios.h>
+
+#endif /* _ASM_SCORE_TERMIOS_H */
--- /dev/null
+#ifndef _ASM_SCORE_THREAD_INFO_H
+#define _ASM_SCORE_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+#define KU_MASK 0x08
+#define KU_USER 0x08
+#define KU_KERN 0x00
+
+#ifndef __ASSEMBLY__
+
+#include <asm/processor.h>
+
+/*
+ * low level task data that entry.S needs immediate access to
+ * - this struct should fit entirely inside of one cache line
+ * - this struct shares the supervisor stack pages
+ * - if the contents of this structure are changed, the assembly constants
+ * must also be changed
+ */
+struct thread_info {
+ struct task_struct *task; /* main task structure */
+ struct exec_domain *exec_domain; /* execution domain */
+ unsigned long flags; /* low level flags */
+ unsigned long tp_value; /* thread pointer */
+ __u32 cpu; /* current CPU */
+
+ /* 0 => preemptable, < 0 => BUG */
+ int preempt_count;
+
+ /*
+ * thread address space:
+ * 0-0xBFFFFFFF for user-thead
+ * 0-0xFFFFFFFF for kernel-thread
+ */
+ mm_segment_t addr_limit;
+ struct restart_block restart_block;
+ struct pt_regs *regs;
+};
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ *
+ * preempt_count needs to be 1 initially, until the scheduler is functional.
+ */
+#define INIT_THREAD_INFO(tsk) \
+{ \
+ .task = &tsk, \
+ .exec_domain = &default_exec_domain, \
+ .cpu = 0, \
+ .preempt_count = 1, \
+ .addr_limit = KERNEL_DS, \
+ .restart_block = { \
+ .fn = do_no_restart_syscall, \
+ }, \
+}
+
+#define init_thread_info (init_thread_union.thread_info)
+#define init_stack (init_thread_union.stack)
+
+/* How to get the thread information struct from C. */
+register struct thread_info *__current_thread_info __asm__("r28");
+#define current_thread_info() __current_thread_info
+
+/* thread information allocation */
+#define THREAD_SIZE_ORDER (1)
+#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
+#define THREAD_MASK (THREAD_SIZE - 1UL)
+#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
+
+#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
+#define free_thread_info(info) kfree(info)
+
+#endif /* !__ASSEMBLY__ */
+
+#define PREEMPT_ACTIVE 0x10000000
+
+/*
+ * thread information flags
+ * - these are process state flags that various assembly files may need to
+ * access
+ * - pending work-to-be-done flags are in LSW
+ * - other flags in MSW
+ */
+#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
+#define TIF_SIGPENDING 1 /* signal pending */
+#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
+#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal() */
+#define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling
+ TIF_NEED_RESCHED */
+#define TIF_MEMDIE 18
+
+#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
+#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
+#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
+#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
+
+#define _TIF_WORK_MASK (0x0000ffff)
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_SCORE_THREAD_INFO_H */
--- /dev/null
+#ifndef _ASM_SCORE_TIMEX_H
+#define _ASM_SCORE_TIMEX_H
+
+#define CLOCK_TICK_RATE 27000000 /* Timer input freq. */
+
+#include <asm-generic/timex.h>
+
+#endif /* _ASM_SCORE_TIMEX_H */
--- /dev/null
+#ifndef _ASM_SCORE_TLB_H
+#define _ASM_SCORE_TLB_H
+
+/*
+ * SCORE doesn't need any special per-pte or per-vma handling, except
+ * we need to flush cache for area to be unmapped.
+ */
+#define tlb_start_vma(tlb, vma) do {} while (0)
+#define tlb_end_vma(tlb, vma) do {} while (0)
+#define __tlb_remove_tlb_entry(tlb, ptep, address) do {} while (0)
+#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
+
+extern void score7_FTLB_refill_Handler(void);
+
+#include <asm-generic/tlb.h>
+
+#endif /* _ASM_SCORE_TLB_H */
--- /dev/null
+#ifndef _ASM_SCORE_TLBFLUSH_H
+#define _ASM_SCORE_TLBFLUSH_H
+
+#include <linux/mm.h>
+
+/*
+ * TLB flushing:
+ *
+ * - flush_tlb_all() flushes all processes TLB entries
+ * - flush_tlb_mm(mm) flushes the specified mm context TLB entries
+ * - flush_tlb_page(vma, vmaddr) flushes one page
+ * - flush_tlb_range(vma, start, end) flushes a range of pages
+ * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
+ */
+extern void local_flush_tlb_all(void);
+extern void local_flush_tlb_mm(struct mm_struct *mm);
+extern void local_flush_tlb_range(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end);
+extern void local_flush_tlb_kernel_range(unsigned long start,
+ unsigned long end);
+extern void local_flush_tlb_page(struct vm_area_struct *vma,
+ unsigned long page);
+extern void local_flush_tlb_one(unsigned long vaddr);
+
+#define flush_tlb_all() local_flush_tlb_all()
+#define flush_tlb_mm(mm) local_flush_tlb_mm(mm)
+#define flush_tlb_range(vma, vmaddr, end) \
+ local_flush_tlb_range(vma, vmaddr, end)
+#define flush_tlb_kernel_range(vmaddr, end) \
+ local_flush_tlb_kernel_range(vmaddr, end)
+#define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page)
+#define flush_tlb_one(vaddr) local_flush_tlb_one(vaddr)
+
+#ifndef __ASSEMBLY__
+
+static inline unsigned long pevn_get(void)
+{
+ unsigned long val;
+
+ __asm__ __volatile__(
+ "mfcr %0, cr11\n"
+ "nop\nnop\n"
+ : "=r" (val));
+
+ return val;
+}
+
+static inline void pevn_set(unsigned long val)
+{
+ __asm__ __volatile__(
+ "mtcr %0, cr11\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+ : : "r" (val));
+}
+
+static inline void pectx_set(unsigned long val)
+{
+ __asm__ __volatile__(
+ "mtcr %0, cr12\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+ : : "r" (val));
+}
+
+static inline unsigned long pectx_get(void)
+{
+ unsigned long val;
+ __asm__ __volatile__(
+ "mfcr %0, cr12\n"
+ "nop\nnop\n"
+ : "=r" (val));
+ return val;
+}
+static inline unsigned long tlblock_get(void)
+{
+ unsigned long val;
+
+ __asm__ __volatile__(
+ "mfcr %0, cr7\n"
+ "nop\nnop\n"
+ : "=r" (val));
+ return val;
+}
+static inline void tlblock_set(unsigned long val)
+{
+ __asm__ __volatile__(
+ "mtcr %0, cr7\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+ : : "r" (val));
+}
+
+static inline void tlbpt_set(unsigned long val)
+{
+ __asm__ __volatile__(
+ "mtcr %0, cr8\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+ : : "r" (val));
+}
+
+static inline long tlbpt_get(void)
+{
+ long val;
+
+ __asm__ __volatile__(
+ "mfcr %0, cr8\n"
+ "nop\nnop\n"
+ : "=r" (val));
+
+ return val;
+}
+
+static inline void peaddr_set(unsigned long val)
+{
+ __asm__ __volatile__(
+ "mtcr %0, cr9\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+ : : "r" (val));
+}
+
+/* TLB operations. */
+static inline void tlb_probe(void)
+{
+ __asm__ __volatile__("stlb;nop;nop;nop;nop;nop");
+}
+
+static inline void tlb_read(void)
+{
+ __asm__ __volatile__("mftlb;nop;nop;nop;nop;nop");
+}
+
+static inline void tlb_write_indexed(void)
+{
+ __asm__ __volatile__("mtptlb;nop;nop;nop;nop;nop");
+}
+
+static inline void tlb_write_random(void)
+{
+ __asm__ __volatile__("mtrtlb;nop;nop;nop;nop;nop");
+}
+
+#endif /* Not __ASSEMBLY__ */
+
+#endif /* _ASM_SCORE_TLBFLUSH_H */
--- /dev/null
+#ifndef _ASM_SCORE_TOPOLOGY_H
+#define _ASM_SCORE_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_SCORE_TOPOLOGY_H */
--- /dev/null
+#ifndef _ASM_SCORE_TYPES_H
+#define _ASM_SCORE_TYPES_H
+
+#include <asm-generic/types.h>
+
+#endif /* _ASM_SCORE_TYPES_H */
--- /dev/null
+#ifndef _ASM_SCORE_UACCESS_H
+#define _ASM_SCORE_UACCESS_H
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+struct pt_regs;
+extern int fixup_exception(struct pt_regs *regs);
+
+#ifndef __ASSEMBLY__
+
+#define __range_ok(addr, size) \
+ ((((unsigned long __force)(addr) >= 0x80000000) \
+ || ((unsigned long)(size) > 0x80000000) \
+ || (((unsigned long __force)(addr) + (unsigned long)(size)) > 0x80000000)))
+
+#define __access_ok(addr, size) \
+ (__range_ok((addr), (size)) == 0)
+
+#include <asm-generic/uaccess.h>
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_SCORE_UACCESS_H */
--- /dev/null
+#include <asm-generic/ucontext.h>
--- /dev/null
+#ifndef _ASM_SCORE_UNALIGNED_H
+#define _ASM_SCORE_UNALIGNED_H
+
+#include <asm-generic/unaligned.h>
+
+#endif /* _ASM_SCORE_UNALIGNED_H */
--- /dev/null
+#if !defined(_ASM_SCORE_UNISTD_H) || defined(__SYSCALL)
+#define _ASM_SCORE_UNISTD_H
+
+#define __ARCH_HAVE_MMU
+
+#include <asm-generic/unistd.h>
+
+#endif /* _ASM_SCORE_UNISTD_H */
--- /dev/null
+#ifndef _ASM_SCORE_USER_H
+#define _ASM_SCORE_USER_H
+
+#endif /* _ASM_SCORE_USER_H */
--- /dev/null
+#
+# Makefile for the Linux/SCORE kernel.
+#
+
+extra-y := head.o vmlinux.lds
+
+obj-y += entry.o init_task.o irq.o process.o ptrace.o \
+ setup.o signal.o sys_score.o time.o traps.o \
+ sys_call_table.o
+
+obj-$(CONFIG_MODULES) += module.o
--- /dev/null
+/*
+ * arch/score/kernel/asm-offsets.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/kbuild.h>
+#include <linux/interrupt.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+
+#include <asm-generic/cmpxchg-local.h>
+
+void output_ptreg_defines(void)
+{
+ COMMENT("SCORE pt_regs offsets.");
+ OFFSET(PT_R0, pt_regs, regs[0]);
+ OFFSET(PT_R1, pt_regs, regs[1]);
+ OFFSET(PT_R2, pt_regs, regs[2]);
+ OFFSET(PT_R3, pt_regs, regs[3]);
+ OFFSET(PT_R4, pt_regs, regs[4]);
+ OFFSET(PT_R5, pt_regs, regs[5]);
+ OFFSET(PT_R6, pt_regs, regs[6]);
+ OFFSET(PT_R7, pt_regs, regs[7]);
+ OFFSET(PT_R8, pt_regs, regs[8]);
+ OFFSET(PT_R9, pt_regs, regs[9]);
+ OFFSET(PT_R10, pt_regs, regs[10]);
+ OFFSET(PT_R11, pt_regs, regs[11]);
+ OFFSET(PT_R12, pt_regs, regs[12]);
+ OFFSET(PT_R13, pt_regs, regs[13]);
+ OFFSET(PT_R14, pt_regs, regs[14]);
+ OFFSET(PT_R15, pt_regs, regs[15]);
+ OFFSET(PT_R16, pt_regs, regs[16]);
+ OFFSET(PT_R17, pt_regs, regs[17]);
+ OFFSET(PT_R18, pt_regs, regs[18]);
+ OFFSET(PT_R19, pt_regs, regs[19]);
+ OFFSET(PT_R20, pt_regs, regs[20]);
+ OFFSET(PT_R21, pt_regs, regs[21]);
+ OFFSET(PT_R22, pt_regs, regs[22]);
+ OFFSET(PT_R23, pt_regs, regs[23]);
+ OFFSET(PT_R24, pt_regs, regs[24]);
+ OFFSET(PT_R25, pt_regs, regs[25]);
+ OFFSET(PT_R26, pt_regs, regs[26]);
+ OFFSET(PT_R27, pt_regs, regs[27]);
+ OFFSET(PT_R28, pt_regs, regs[28]);
+ OFFSET(PT_R29, pt_regs, regs[29]);
+ OFFSET(PT_R30, pt_regs, regs[30]);
+ OFFSET(PT_R31, pt_regs, regs[31]);
+
+ OFFSET(PT_ORIG_R4, pt_regs, orig_r4);
+ OFFSET(PT_ORIG_R7, pt_regs, orig_r7);
+ OFFSET(PT_CEL, pt_regs, cel);
+ OFFSET(PT_CEH, pt_regs, ceh);
+ OFFSET(PT_SR0, pt_regs, sr0);
+ OFFSET(PT_SR1, pt_regs, sr1);
+ OFFSET(PT_SR2, pt_regs, sr2);
+ OFFSET(PT_EPC, pt_regs, cp0_epc);
+ OFFSET(PT_EMA, pt_regs, cp0_ema);
+ OFFSET(PT_PSR, pt_regs, cp0_psr);
+ OFFSET(PT_ECR, pt_regs, cp0_ecr);
+ OFFSET(PT_CONDITION, pt_regs, cp0_condition);
+ OFFSET(PT_IS_SYSCALL, pt_regs, is_syscall);
+
+ DEFINE(PT_SIZE, sizeof(struct pt_regs));
+ BLANK();
+}
+
+void output_task_defines(void)
+{
+ COMMENT("SCORE task_struct offsets.");
+ OFFSET(TASK_STATE, task_struct, state);
+ OFFSET(TASK_THREAD_INFO, task_struct, stack);
+ OFFSET(TASK_FLAGS, task_struct, flags);
+ OFFSET(TASK_MM, task_struct, mm);
+ OFFSET(TASK_PID, task_struct, pid);
+ DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct));
+ BLANK();
+}
+
+void output_thread_info_defines(void)
+{
+ COMMENT("SCORE thread_info offsets.");
+ OFFSET(TI_TASK, thread_info, task);
+ OFFSET(TI_EXEC_DOMAIN, thread_info, exec_domain);
+ OFFSET(TI_FLAGS, thread_info, flags);
+ OFFSET(TI_TP_VALUE, thread_info, tp_value);
+ OFFSET(TI_CPU, thread_info, cpu);
+ OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
+ OFFSET(TI_ADDR_LIMIT, thread_info, addr_limit);
+ OFFSET(TI_RESTART_BLOCK, thread_info, restart_block);
+ OFFSET(TI_REGS, thread_info, regs);
+ DEFINE(KERNEL_STACK_SIZE, THREAD_SIZE);
+ DEFINE(KERNEL_STACK_MASK, THREAD_MASK);
+ BLANK();
+}
+
+void output_thread_defines(void)
+{
+ COMMENT("SCORE specific thread_struct offsets.");
+ OFFSET(THREAD_REG0, task_struct, thread.reg0);
+ OFFSET(THREAD_REG2, task_struct, thread.reg2);
+ OFFSET(THREAD_REG3, task_struct, thread.reg3);
+ OFFSET(THREAD_REG12, task_struct, thread.reg12);
+ OFFSET(THREAD_REG13, task_struct, thread.reg13);
+ OFFSET(THREAD_REG14, task_struct, thread.reg14);
+ OFFSET(THREAD_REG15, task_struct, thread.reg15);
+ OFFSET(THREAD_REG16, task_struct, thread.reg16);
+ OFFSET(THREAD_REG17, task_struct, thread.reg17);
+ OFFSET(THREAD_REG18, task_struct, thread.reg18);
+ OFFSET(THREAD_REG19, task_struct, thread.reg19);
+ OFFSET(THREAD_REG20, task_struct, thread.reg20);
+ OFFSET(THREAD_REG21, task_struct, thread.reg21);
+ OFFSET(THREAD_REG29, task_struct, thread.reg29);
+
+ OFFSET(THREAD_PSR, task_struct, thread.cp0_psr);
+ OFFSET(THREAD_EMA, task_struct, thread.cp0_ema);
+ OFFSET(THREAD_BADUADDR, task_struct, thread.cp0_baduaddr);
+ OFFSET(THREAD_ECODE, task_struct, thread.error_code);
+ OFFSET(THREAD_TRAPNO, task_struct, thread.trap_no);
+ BLANK();
+}
+
+void output_mm_defines(void)
+{
+ COMMENT("Size of struct page");
+ DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page));
+ BLANK();
+ COMMENT("Linux mm_struct offsets.");
+ OFFSET(MM_USERS, mm_struct, mm_users);
+ OFFSET(MM_PGD, mm_struct, pgd);
+ OFFSET(MM_CONTEXT, mm_struct, context);
+ BLANK();
+ DEFINE(_PAGE_SIZE, PAGE_SIZE);
+ DEFINE(_PAGE_SHIFT, PAGE_SHIFT);
+ BLANK();
+ DEFINE(_PGD_T_SIZE, sizeof(pgd_t));
+ DEFINE(_PTE_T_SIZE, sizeof(pte_t));
+ BLANK();
+ DEFINE(_PGD_ORDER, PGD_ORDER);
+ DEFINE(_PTE_ORDER, PTE_ORDER);
+ BLANK();
+ DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT);
+ BLANK();
+ DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD);
+ DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE);
+ BLANK();
+}
+
+void output_sc_defines(void)
+{
+ COMMENT("Linux sigcontext offsets.");
+ OFFSET(SC_REGS, sigcontext, sc_regs);
+ OFFSET(SC_MDCEH, sigcontext, sc_mdceh);
+ OFFSET(SC_MDCEL, sigcontext, sc_mdcel);
+ OFFSET(SC_PC, sigcontext, sc_pc);
+ OFFSET(SC_PSR, sigcontext, sc_psr);
+ OFFSET(SC_ECR, sigcontext, sc_ecr);
+ OFFSET(SC_EMA, sigcontext, sc_ema);
+ BLANK();
+}
+
+void output_signal_defined(void)
+{
+ COMMENT("Linux signal numbers.");
+ DEFINE(_SIGHUP, SIGHUP);
+ DEFINE(_SIGINT, SIGINT);
+ DEFINE(_SIGQUIT, SIGQUIT);
+ DEFINE(_SIGILL, SIGILL);
+ DEFINE(_SIGTRAP, SIGTRAP);
+ DEFINE(_SIGIOT, SIGIOT);
+ DEFINE(_SIGABRT, SIGABRT);
+ DEFINE(_SIGFPE, SIGFPE);
+ DEFINE(_SIGKILL, SIGKILL);
+ DEFINE(_SIGBUS, SIGBUS);
+ DEFINE(_SIGSEGV, SIGSEGV);
+ DEFINE(_SIGSYS, SIGSYS);
+ DEFINE(_SIGPIPE, SIGPIPE);
+ DEFINE(_SIGALRM, SIGALRM);
+ DEFINE(_SIGTERM, SIGTERM);
+ DEFINE(_SIGUSR1, SIGUSR1);
+ DEFINE(_SIGUSR2, SIGUSR2);
+ DEFINE(_SIGCHLD, SIGCHLD);
+ DEFINE(_SIGPWR, SIGPWR);
+ DEFINE(_SIGWINCH, SIGWINCH);
+ DEFINE(_SIGURG, SIGURG);
+ DEFINE(_SIGIO, SIGIO);
+ DEFINE(_SIGSTOP, SIGSTOP);
+ DEFINE(_SIGTSTP, SIGTSTP);
+ DEFINE(_SIGCONT, SIGCONT);
+ DEFINE(_SIGTTIN, SIGTTIN);
+ DEFINE(_SIGTTOU, SIGTTOU);
+ DEFINE(_SIGVTALRM, SIGVTALRM);
+ DEFINE(_SIGPROF, SIGPROF);
+ DEFINE(_SIGXCPU, SIGXCPU);
+ DEFINE(_SIGXFSZ, SIGXFSZ);
+ BLANK();
+}
--- /dev/null
+/*
+ * arch/score/kernel/entry.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/linkage.h>
+
+#include <asm/asmmacro.h>
+#include <asm/thread_info.h>
+#include <asm/unistd.h>
+
+/*
+ * disable interrupts.
+ */
+.macro disable_irq
+ mfcr r8, cr0
+ srli r8, r8, 1
+ slli r8, r8, 1
+ mtcr r8, cr0
+ nop
+ nop
+ nop
+ nop
+ nop
+.endm
+
+/*
+ * enable interrupts.
+ */
+.macro enable_irq
+ mfcr r8, cr0
+ ori r8, 1
+ mtcr r8, cr0
+ nop
+ nop
+ nop
+ nop
+ nop
+.endm
+
+__INIT
+ENTRY(debug_exception_vector)
+ nop!
+ nop!
+ nop!
+ nop!
+ nop!
+ nop!
+ nop!
+ nop!
+
+ENTRY(general_exception_vector) # should move to addr 0x200
+ j general_exception
+ nop!
+ nop!
+ nop!
+ nop!
+ nop!
+ nop!
+
+ENTRY(interrupt_exception_vector) # should move to addr 0x210
+ j interrupt_exception
+ nop!
+ nop!
+ nop!
+ nop!
+ nop!
+ nop!
+
+ .section ".text", "ax"
+ .align 2;
+general_exception:
+ mfcr r31, cr2
+ nop
+ la r30, exception_handlers
+ andi r31, 0x1f # get ecr.exc_code
+ slli r31, r31, 2
+ add r30, r30, r31
+ lw r30, [r30]
+ br r30
+
+interrupt_exception:
+ SAVE_ALL
+ mfcr r4, cr2
+ nop
+ lw r16, [r28, TI_REGS]
+ sw r0, [r28, TI_REGS]
+ la r3, ret_from_irq
+ srli r4, r4, 18 # get ecr.ip[7:2], interrupt No.
+ mv r5, r0
+ j do_IRQ
+
+ENTRY(handle_nmi) # NMI #1
+ SAVE_ALL
+ mv r4, r0
+ la r8, nmi_exception_handler
+ brl r8
+ j restore_all
+
+ENTRY(handle_adelinsn) # AdEL-instruction #2
+ SAVE_ALL
+ mfcr r8, cr6
+ nop
+ nop
+ sw r8, [r0, PT_EMA]
+ mv r4, r0
+ la r8, do_adelinsn
+ brl r8
+ mv r4, r0
+ j ret_from_exception
+ nop
+
+ENTRY(handle_ibe) # BusEL-instruction #5
+ SAVE_ALL
+ mv r4, r0
+ la r8, do_be
+ brl r8
+ mv r4, r0
+ j ret_from_exception
+ nop
+
+ENTRY(handle_pel) # P-EL #6
+ SAVE_ALL
+ mv r4, r0
+ la r8, do_pel
+ brl r8
+ mv r4, r0
+ j ret_from_exception
+ nop
+
+ENTRY(handle_ccu) # CCU #8
+ SAVE_ALL
+ mv r4, r0
+ la r8, do_ccu
+ brl r8
+ mv r4, r0
+ j ret_from_exception
+ nop
+
+ENTRY(handle_ri) # RI #9
+ SAVE_ALL
+ mv r4, r0
+ la r8, do_ri
+ brl r8
+ mv r4, r0
+ j ret_from_exception
+ nop
+
+ENTRY(handle_tr) # Trap #10
+ SAVE_ALL
+ mv r4, r0
+ la r8, do_tr
+ brl r8
+ mv r4, r0
+ j ret_from_exception
+ nop
+
+ENTRY(handle_adedata) # AdES-instruction #12
+ SAVE_ALL
+ mfcr r8, cr6
+ nop
+ nop
+ sw r8, [r0, PT_EMA]
+ mv r4, r0
+ la r8, do_adedata
+ brl r8
+ mv r4, r0
+ j ret_from_exception
+ nop
+
+ENTRY(handle_cee) # CeE #16
+ SAVE_ALL
+ mv r4, r0
+ la r8, do_cee
+ brl r8
+ mv r4, r0
+ j ret_from_exception
+ nop
+
+ENTRY(handle_cpe) # CpE #17
+ SAVE_ALL
+ mv r4, r0
+ la r8, do_cpe
+ brl r8
+ mv r4, r0
+ j ret_from_exception
+ nop
+
+ENTRY(handle_dbe) # BusEL-data #18
+ SAVE_ALL
+ mv r4, r0
+ la r8, do_be
+ brl r8
+ mv r4, r0
+ j ret_from_exception
+ nop
+
+ENTRY(handle_reserved) # others
+ SAVE_ALL
+ mv r4, r0
+ la r8, do_reserved
+ brl r8
+ mv r4, r0
+ j ret_from_exception
+ nop
+
+#ifndef CONFIG_PREEMPT
+#define resume_kernel restore_all
+#else
+#define __ret_from_irq ret_from_exception
+#endif
+
+ .align 2
+#ifndef CONFIG_PREEMPT
+ENTRY(ret_from_exception)
+ disable_irq # preempt stop
+ nop
+ j __ret_from_irq
+ nop
+#endif
+
+ENTRY(ret_from_irq)
+ sw r16, [r28, TI_REGS]
+
+ENTRY(__ret_from_irq)
+ lw r8, [r0, PT_PSR] # returning to kernel mode?
+ andri.c r8, r8, KU_USER
+ beq resume_kernel
+
+resume_userspace:
+ disable_irq
+ lw r6, [r28, TI_FLAGS] # current->work
+ li r8, _TIF_WORK_MASK
+ and.c r8, r8, r6 # ignoring syscall_trace
+ bne work_pending
+ nop
+ j restore_all
+ nop
+
+#ifdef CONFIG_PREEMPT
+resume_kernel:
+ disable_irq
+ lw r8, [r28, TI_PRE_COUNT]
+ cmpz.c r8
+ bne r8, restore_all
+need_resched:
+ lw r8, [r28, TI_FLAGS]
+ andri.c r9, r8, _TIF_NEED_RESCHED
+ beq restore_all
+ lw r8, [r28, PT_PSR] # Interrupts off?
+ andri.c r8, r8, 1
+ beq restore_all
+ bl preempt_schedule_irq
+ nop
+ j need_resched
+ nop
+#endif
+
+ENTRY(ret_from_fork)
+ bl schedule_tail # r4=struct task_struct *prev
+
+ENTRY(syscall_exit)
+ nop
+ disable_irq
+ lw r6, [r28, TI_FLAGS] # current->work
+ li r8, _TIF_WORK_MASK
+ and.c r8, r6, r8
+ bne syscall_exit_work
+
+ENTRY(restore_all) # restore full frame
+ RESTORE_ALL_AND_RET
+
+work_pending:
+ andri.c r8, r6, _TIF_NEED_RESCHED # r6 is preloaded with TI_FLAGS
+ beq work_notifysig
+work_resched:
+ bl schedule
+ nop
+ disable_irq
+ lw r6, [r28, TI_FLAGS]
+ li r8, _TIF_WORK_MASK
+ and.c r8, r6, r8 # is there any work to be done
+ # other than syscall tracing?
+ beq restore_all
+ andri.c r8, r6, _TIF_NEED_RESCHED
+ bne work_resched
+
+work_notifysig:
+ mv r4, r0
+ li r5, 0
+ bl do_notify_resume # r6 already loaded
+ nop
+ j resume_userspace
+ nop
+
+ENTRY(syscall_exit_work)
+ li r8, _TIF_SYSCALL_TRACE
+ and.c r8, r8, r6 # r6 is preloaded with TI_FLAGS
+ beq work_pending # trace bit set?
+ nop
+ enable_irq
+ mv r4, r0
+ li r5, 1
+ bl do_syscall_trace
+ nop
+ b resume_userspace
+ nop
+
+.macro save_context reg
+ sw r12, [\reg, THREAD_REG12];
+ sw r13, [\reg, THREAD_REG13];
+ sw r14, [\reg, THREAD_REG14];
+ sw r15, [\reg, THREAD_REG15];
+ sw r16, [\reg, THREAD_REG16];
+ sw r17, [\reg, THREAD_REG17];
+ sw r18, [\reg, THREAD_REG18];
+ sw r19, [\reg, THREAD_REG19];
+ sw r20, [\reg, THREAD_REG20];
+ sw r21, [\reg, THREAD_REG21];
+ sw r29, [\reg, THREAD_REG29];
+ sw r2, [\reg, THREAD_REG2];
+ sw r0, [\reg, THREAD_REG0]
+.endm
+
+.macro restore_context reg
+ lw r12, [\reg, THREAD_REG12];
+ lw r13, [\reg, THREAD_REG13];
+ lw r14, [\reg, THREAD_REG14];
+ lw r15, [\reg, THREAD_REG15];
+ lw r16, [\reg, THREAD_REG16];
+ lw r17, [\reg, THREAD_REG17];
+ lw r18, [\reg, THREAD_REG18];
+ lw r19, [\reg, THREAD_REG19];
+ lw r20, [\reg, THREAD_REG20];
+ lw r21, [\reg, THREAD_REG21];
+ lw r29, [\reg, THREAD_REG29];
+ lw r0, [\reg, THREAD_REG0];
+ lw r2, [\reg, THREAD_REG2];
+ lw r3, [\reg, THREAD_REG3]
+.endm
+
+/*
+ * task_struct *resume(task_struct *prev, task_struct *next,
+ * struct thread_info *next_ti)
+ */
+ENTRY(resume)
+ mfcr r9, cr0
+ nop
+ nop
+ sw r9, [r4, THREAD_PSR]
+ save_context r4
+ sw r3, [r4, THREAD_REG3]
+
+ mv r28, r6
+ restore_context r5
+ mv r8, r6
+ addi r8, KERNEL_STACK_SIZE
+ subi r8, 32
+ la r9, kernelsp;
+ sw r8, [r9];
+
+ mfcr r9, cr0
+ ldis r7, 0x00ff
+ nop
+ and r9, r9, r7
+ lw r6, [r5, THREAD_PSR]
+ not r7, r7
+ and r6, r6, r7
+ or r6, r6, r9
+ mtcr r6, cr0
+ nop; nop; nop; nop; nop
+ br r3
+
+ENTRY(handle_sys)
+ SAVE_ALL
+ sw r8, [r0, 16] # argument 5 from user r8
+ sw r9, [r0, 20] # argument 6 from user r9
+ enable_irq
+
+ sw r4, [r0, PT_ORIG_R4] #for restart syscall
+ sw r7, [r0, PT_ORIG_R7] #for restart syscall
+ sw r27, [r0, PT_IS_SYSCALL] # it from syscall
+
+ lw r9, [r0, PT_EPC] # skip syscall on return
+ addi r9, 4
+ sw r9, [r0, PT_EPC]
+
+ cmpi.c r27, __NR_syscalls # check syscall number
+ bgtu illegal_syscall
+
+ slli r8, r27, 2 # get syscall routine
+ la r11, sys_call_table
+ add r11, r11, r8
+ lw r10, [r11] # get syscall entry
+
+ cmpz.c r10
+ beq illegal_syscall
+
+ lw r8, [r28, TI_FLAGS]
+ li r9, _TIF_SYSCALL_TRACE
+ and.c r8, r8, r9
+ bne syscall_trace_entry
+
+ brl r10 # Do The Real system call
+
+ cmpi.c r4, 0
+ blt 1f
+ ldi r8, 0
+ sw r8, [r0, PT_R7]
+ b 2f
+1:
+ cmpi.c r4, -MAX_ERRNO - 1
+ ble 2f
+ ldi r8, 0x1;
+ sw r8, [r0, PT_R7]
+ neg r4, r4
+2:
+ sw r4, [r0, PT_R4] # save result
+
+syscall_return:
+ disable_irq
+ lw r6, [r28, TI_FLAGS] # current->work
+ li r8, _TIF_WORK_MASK
+ and.c r8, r6, r8
+ bne syscall_return_work
+ j restore_all
+
+syscall_return_work:
+ j syscall_exit_work
+
+syscall_trace_entry:
+ mv r16, r10
+ mv r4, r0
+ li r5, 0
+ bl do_syscall_trace
+
+ mv r8, r16
+ lw r4, [r0, PT_R4] # Restore argument registers
+ lw r5, [r0, PT_R5]
+ lw r6, [r0, PT_R6]
+ lw r7, [r0, PT_R7]
+ brl r8
+
+ li r8, -MAX_ERRNO - 1
+ sw r8, [r0, PT_R7] # set error flag
+
+ neg r4, r4 # error
+ sw r4, [r0, PT_R0] # set flag for syscall
+ # restarting
+1: sw r4, [r0, PT_R2] # result
+ j syscall_exit
+
+illegal_syscall:
+ ldi r4, -ENOSYS # error
+ sw r4, [r0, PT_ORIG_R4]
+ sw r4, [r0, PT_R4]
+ ldi r9, 1 # set error flag
+ sw r9, [r0, PT_R7]
+ j syscall_return
+
+ENTRY(sys_execve)
+ mv r4, r0
+ la r8, score_execve
+ br r8
+
+ENTRY(sys_clone)
+ mv r4, r0
+ la r8, score_clone
+ br r8
+
+ENTRY(sys_rt_sigreturn)
+ mv r4, r0
+ la r8, score_rt_sigreturn
+ br r8
+
+ENTRY(sys_sigaltstack)
+ mv r4, r0
+ la r8, score_sigaltstack
+ br r8
--- /dev/null
+/*
+ * arch/score/kernel/head.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <linux/init.h>
+#include <linux/linkage.h>
+
+#include <asm/asm-offsets.h>
+
+ .extern start_kernel
+ .global init_thread_union
+ .global kernelsp
+
+__INIT
+ENTRY(_stext)
+ la r30, __bss_start /* initialize BSS segment. */
+ la r31, _end
+ xor r8, r8, r8
+
+1: cmp.c r31, r30
+ beq 2f
+
+ sw r8, [r30] /* clean memory. */
+ addi r30, 4
+ b 1b
+
+2: la r28, init_thread_union /* set kernel stack. */
+ mv r0, r28
+ addi r0, KERNEL_STACK_SIZE - 32
+ la r30, kernelsp
+ sw r0, [r30]
+ subi r0, 4*4
+ xor r30, r30, r30
+ ori r30, 0x02 /* enable MMU. */
+ mtcr r30, cr4
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+
+ /* there is no parameter */
+ xor r4, r4, r4
+ xor r5, r5, r5
+ xor r6, r6, r6
+ xor r7, r7, r7
+ la r30, start_kernel /* jump to init_arch */
+ br r30
--- /dev/null
+/*
+ * arch/score/kernel/init_task.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/init_task.h>
+#include <linux/mqueue.h>
+
+static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
+static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
+
+/*
+ * Initial thread structure.
+ *
+ * We need to make sure that this is THREAD_SIZE aligned due to the
+ * way process stacks are handled. This is done by having a special
+ * "init_task" linker map entry..
+ */
+union thread_union init_thread_union
+ __attribute__((__section__(".data.init_task"))) =
+ { INIT_THREAD_INFO(init_task) };
+
+/*
+ * Initial task structure.
+ *
+ * All other task structs will be allocated on slabs in fork.c
+ */
+struct task_struct init_task = INIT_TASK(init_task);
+EXPORT_SYMBOL(init_task);
--- /dev/null
+/*
+ * arch/score/kernel/irq.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
+#include <linux/seq_file.h>
+
+#include <asm/io.h>
+
+/* the interrupt controller is hardcoded at this address */
+#define SCORE_PIC ((u32 __iomem __force *)0x95F50000)
+
+#define INT_PNDL 0
+#define INT_PNDH 1
+#define INT_PRIORITY_M 2
+#define INT_PRIORITY_SG0 4
+#define INT_PRIORITY_SG1 5
+#define INT_PRIORITY_SG2 6
+#define INT_PRIORITY_SG3 7
+#define INT_MASKL 8
+#define INT_MASKH 9
+
+/*
+ * handles all normal device IRQs
+ */
+asmlinkage void do_IRQ(int irq)
+{
+ irq_enter();
+ generic_handle_irq(irq);
+ irq_exit();
+}
+
+static void score_mask(unsigned int irq_nr)
+{
+ unsigned int irq_source = 63 - irq_nr;
+
+ if (irq_source < 32)
+ __raw_writel((__raw_readl(SCORE_PIC + INT_MASKL) | \
+ (1 << irq_source)), SCORE_PIC + INT_MASKL);
+ else
+ __raw_writel((__raw_readl(SCORE_PIC + INT_MASKH) | \
+ (1 << (irq_source - 32))), SCORE_PIC + INT_MASKH);
+}
+
+static void score_unmask(unsigned int irq_nr)
+{
+ unsigned int irq_source = 63 - irq_nr;
+
+ if (irq_source < 32)
+ __raw_writel((__raw_readl(SCORE_PIC + INT_MASKL) & \
+ ~(1 << irq_source)), SCORE_PIC + INT_MASKL);
+ else
+ __raw_writel((__raw_readl(SCORE_PIC + INT_MASKH) & \
+ ~(1 << (irq_source - 32))), SCORE_PIC + INT_MASKH);
+}
+
+struct irq_chip score_irq_chip = {
+ .name = "Score7-level",
+ .mask = score_mask,
+ .mask_ack = score_mask,
+ .unmask = score_unmask,
+};
+
+/*
+ * initialise the interrupt system
+ */
+void __init init_IRQ(void)
+{
+ int index;
+ unsigned long target_addr;
+
+ for (index = 0; index < NR_IRQS; ++index)
+ set_irq_chip_and_handler(index, &score_irq_chip,
+ handle_level_irq);
+
+ for (target_addr = IRQ_VECTOR_BASE_ADDR;
+ target_addr <= IRQ_VECTOR_END_ADDR;
+ target_addr += IRQ_VECTOR_SIZE)
+ memcpy((void *)target_addr, \
+ interrupt_exception_vector, IRQ_VECTOR_SIZE);
+
+ __raw_writel(0xffffffff, SCORE_PIC + INT_MASKL);
+ __raw_writel(0xffffffff, SCORE_PIC + INT_MASKH);
+
+ __asm__ __volatile__(
+ "mtcr %0, cr3\n\t"
+ : : "r" (EXCEPTION_VECTOR_BASE_ADDR | \
+ VECTOR_ADDRESS_OFFSET_MODE16));
+}
+
+/*
+ * Generic, controller-independent functions:
+ */
+int show_interrupts(struct seq_file *p, void *v)
+{
+ int i = *(loff_t *)v, cpu;
+ struct irqaction *action;
+ unsigned long flags;
+
+ if (i == 0) {
+ seq_puts(p, " ");
+ for_each_online_cpu(cpu)
+ seq_printf(p, "CPU%d ", cpu);
+ seq_putc(p, '\n');
+ }
+
+ if (i < NR_IRQS) {
+ spin_lock_irqsave(&irq_desc[i].lock, flags);
+ action = irq_desc[i].action;
+ if (!action)
+ goto unlock;
+
+ seq_printf(p, "%3d: ", i);
+ seq_printf(p, "%10u ", kstat_irqs(i));
+ seq_printf(p, " %8s", irq_desc[i].chip->name ? : "-");
+ seq_printf(p, " %s", action->name);
+ for (action = action->next; action; action = action->next)
+ seq_printf(p, ", %s", action->name);
+
+ seq_putc(p, '\n');
+unlock:
+ spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+ }
+
+ return 0;
+}
--- /dev/null
+/*
+ * arch/score/kernel/module.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/moduleloader.h>
+#include <linux/module.h>
+#include <linux/vmalloc.h>
+
+void *module_alloc(unsigned long size)
+{
+ return size ? vmalloc(size) : NULL;
+}
+
+/* Free memory returned from module_alloc */
+void module_free(struct module *mod, void *module_region)
+{
+ vfree(module_region);
+}
+
+int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
+ char *secstrings, struct module *mod)
+{
+ return 0;
+}
+
+int apply_relocate(Elf_Shdr *sechdrs, const char *strtab,
+ unsigned int symindex, unsigned int relindex,
+ struct module *me)
+{
+ Elf32_Shdr *symsec = sechdrs + symindex;
+ Elf32_Shdr *relsec = sechdrs + relindex;
+ Elf32_Shdr *dstsec = sechdrs + relsec->sh_info;
+ Elf32_Rel *rel = (void *)relsec->sh_addr;
+ unsigned int i;
+
+ for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rel); i++, rel++) {
+ unsigned long loc;
+ Elf32_Sym *sym;
+ s32 r_offset;
+
+ r_offset = ELF32_R_SYM(rel->r_info);
+ if ((r_offset < 0) ||
+ (r_offset > (symsec->sh_size / sizeof(Elf32_Sym)))) {
+ printk(KERN_ERR "%s: bad relocation, section %d reloc %d\n",
+ me->name, relindex, i);
+ return -ENOEXEC;
+ }
+
+ sym = ((Elf32_Sym *)symsec->sh_addr) + r_offset;
+
+ if ((rel->r_offset < 0) ||
+ (rel->r_offset > dstsec->sh_size - sizeof(u32))) {
+ printk(KERN_ERR "%s: out of bounds relocation, "
+ "section %d reloc %d offset %d size %d\n",
+ me->name, relindex, i, rel->r_offset,
+ dstsec->sh_size);
+ return -ENOEXEC;
+ }
+
+ loc = dstsec->sh_addr + rel->r_offset;
+ switch (ELF32_R_TYPE(rel->r_info)) {
+ case R_SCORE_NONE:
+ break;
+ case R_SCORE_ABS32:
+ *(unsigned long *)loc += sym->st_value;
+ break;
+ case R_SCORE_HI16:
+ break;
+ case R_SCORE_LO16: {
+ unsigned long hi16_offset, offset;
+ unsigned long uvalue;
+ unsigned long temp, temp_hi;
+ temp_hi = *((unsigned long *)loc - 1);
+ temp = *(unsigned long *)loc;
+
+ hi16_offset = (((((temp_hi) >> 16) & 0x3) << 15) |
+ ((temp_hi) & 0x7fff)) >> 1;
+ offset = ((temp >> 16 & 0x03) << 15) |
+ ((temp & 0x7fff) >> 1);
+ offset = (hi16_offset << 16) | (offset & 0xffff);
+ uvalue = sym->st_value + offset;
+ hi16_offset = (uvalue >> 16) << 1;
+
+ temp_hi = ((temp_hi) & (~(0x37fff))) |
+ (hi16_offset & 0x7fff) |
+ ((hi16_offset << 1) & 0x30000);
+ *((unsigned long *)loc - 1) = temp_hi;
+
+ offset = (uvalue & 0xffff) << 1;
+ temp = (temp & (~(0x37fff))) | (offset & 0x7fff) |
+ ((offset << 1) & 0x30000);
+ *(unsigned long *)loc = temp;
+ break;
+ }
+ case R_SCORE_24: {
+ unsigned long hi16_offset, offset;
+ unsigned long uvalue;
+ unsigned long temp;
+
+ temp = *(unsigned long *)loc;
+ offset = (temp & 0x03FF7FFE);
+ hi16_offset = (offset & 0xFFFF0000);
+ offset = (hi16_offset | ((offset & 0xFFFF) << 1)) >> 2;
+
+ uvalue = (sym->st_value + offset) >> 1;
+ uvalue = uvalue & 0x00ffffff;
+
+ temp = (temp & 0xfc008001) |
+ ((uvalue << 2) & 0x3ff0000) |
+ ((uvalue & 0x3fff) << 1);
+ *(unsigned long *)loc = temp;
+ break;
+ }
+ default:
+ printk(KERN_ERR "%s: unknown relocation: %u\n",
+ me->name, ELF32_R_TYPE(rel->r_info));
+ return -ENOEXEC;
+ }
+ }
+
+ return 0;
+}
+
+int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
+ unsigned int symindex, unsigned int relsec,
+ struct module *me)
+{
+ return 0;
+}
+
+/* Given an address, look for it in the module exception tables. */
+const struct exception_table_entry *search_module_dbetables(unsigned long addr)
+{
+ return NULL;
+}
+
+/* Put in dbe list if necessary. */
+int module_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs,
+ struct module *me)
+{
+ return 0;
+}
+
+void module_arch_cleanup(struct module *mod) {}
--- /dev/null
+/*
+ * arch/score/kernel/process.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include <linux/reboot.h>
+#include <linux/elfcore.h>
+#include <linux/pm.h>
+
+void (*pm_power_off)(void);
+EXPORT_SYMBOL(pm_power_off);
+
+/* If or when software machine-restart is implemented, add code here. */
+void machine_restart(char *command) {}
+
+/* If or when software machine-halt is implemented, add code here. */
+void machine_halt(void) {}
+
+/* If or when software machine-power-off is implemented, add code here. */
+void machine_power_off(void) {}
+
+/*
+ * The idle thread. There's no useful work to be
+ * done, so just try to conserve power and have a
+ * low exit latency (ie sit in a loop waiting for
+ * somebody to say that they'd like to reschedule)
+ */
+void __noreturn cpu_idle(void)
+{
+ /* endless idle loop with no priority at all */
+ while (1) {
+ while (!need_resched())
+ barrier();
+
+ preempt_enable_no_resched();
+ schedule();
+ preempt_disable();
+ }
+}
+
+void ret_from_fork(void);
+
+void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp)
+{
+ unsigned long status;
+
+ /* New thread loses kernel privileges. */
+ status = regs->cp0_psr & ~(KU_MASK);
+ status |= KU_USER;
+ regs->cp0_psr = status;
+ regs->cp0_epc = pc;
+ regs->regs[0] = sp;
+}
+
+void exit_thread(void) {}
+
+/*
+ * When a process does an "exec", machine state like FPU and debug
+ * registers need to be reset. This is a hook function for that.
+ * Currently we don't have any such state to reset, so this is empty.
+ */
+void flush_thread(void) {}
+
+/*
+ * set up the kernel stack and exception frames for a new process
+ */
+int copy_thread(unsigned long clone_flags, unsigned long usp,
+ unsigned long unused,
+ struct task_struct *p, struct pt_regs *regs)
+{
+ struct thread_info *ti = task_thread_info(p);
+ struct pt_regs *childregs = task_pt_regs(p);
+
+ p->set_child_tid = NULL;
+ p->clear_child_tid = NULL;
+
+ *childregs = *regs;
+ childregs->regs[7] = 0; /* Clear error flag */
+ childregs->regs[4] = 0; /* Child gets zero as return value */
+ regs->regs[4] = p->pid;
+
+ if (childregs->cp0_psr & 0x8) { /* test kernel fork or user fork */
+ childregs->regs[0] = usp; /* user fork */
+ } else {
+ childregs->regs[28] = (unsigned long) ti; /* kernel fork */
+ childregs->regs[0] = (unsigned long) childregs;
+ }
+
+ p->thread.reg0 = (unsigned long) childregs;
+ p->thread.reg3 = (unsigned long) ret_from_fork;
+ p->thread.cp0_psr = 0;
+
+ return 0;
+}
+
+/* Fill in the fpu structure for a core dump. */
+int dump_fpu(struct pt_regs *regs, elf_fpregset_t *r)
+{
+ return 1;
+}
+
+static void __noreturn
+kernel_thread_helper(void *unused0, int (*fn)(void *),
+ void *arg, void *unused1)
+{
+ do_exit(fn(arg));
+}
+
+/*
+ * Create a kernel thread.
+ */
+long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
+{
+ struct pt_regs regs;
+
+ memset(®s, 0, sizeof(regs));
+
+ regs.regs[6] = (unsigned long) arg;
+ regs.regs[5] = (unsigned long) fn;
+ regs.cp0_epc = (unsigned long) kernel_thread_helper;
+ regs.cp0_psr = (regs.cp0_psr & ~(0x1|0x4|0x8)) | \
+ ((regs.cp0_psr & 0x3) << 2);
+
+ return do_fork(flags | CLONE_VM | CLONE_UNTRACED, \
+ 0, ®s, 0, NULL, NULL);
+}
+
+unsigned long thread_saved_pc(struct task_struct *tsk)
+{
+ return task_pt_regs(tsk)->cp0_epc;
+}
+
+unsigned long get_wchan(struct task_struct *task)
+{
+ if (!task || task == current || task->state == TASK_RUNNING)
+ return 0;
+
+ if (!task_stack_page(task))
+ return 0;
+
+ return task_pt_regs(task)->cp0_epc;
+}
+
+unsigned long arch_align_stack(unsigned long sp)
+{
+ return sp;
+}
--- /dev/null
+/*
+ * arch/score/kernel/ptrace.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/ptrace.h>
+
+#include <asm/uaccess.h>
+
+static int is_16bitinsn(unsigned long insn)
+{
+ if ((insn & INSN32_MASK) == INSN32_MASK)
+ return 0;
+ else
+ return 1;
+}
+
+int
+read_tsk_long(struct task_struct *child,
+ unsigned long addr, unsigned long *res)
+{
+ int copied;
+
+ copied = access_process_vm(child, addr, res, sizeof(*res), 0);
+
+ return copied != sizeof(*res) ? -EIO : 0;
+}
+
+int
+read_tsk_short(struct task_struct *child,
+ unsigned long addr, unsigned short *res)
+{
+ int copied;
+
+ copied = access_process_vm(child, addr, res, sizeof(*res), 0);
+
+ return copied != sizeof(*res) ? -EIO : 0;
+}
+
+static int
+write_tsk_short(struct task_struct *child,
+ unsigned long addr, unsigned short val)
+{
+ int copied;
+
+ copied = access_process_vm(child, addr, &val, sizeof(val), 1);
+
+ return copied != sizeof(val) ? -EIO : 0;
+}
+
+static int
+write_tsk_long(struct task_struct *child,
+ unsigned long addr, unsigned long val)
+{
+ int copied;
+
+ copied = access_process_vm(child, addr, &val, sizeof(val), 1);
+
+ return copied != sizeof(val) ? -EIO : 0;
+}
+
+/*
+ * Get all user integer registers.
+ */
+static int ptrace_getregs(struct task_struct *tsk, void __user *uregs)
+{
+ struct pt_regs *regs = task_pt_regs(tsk);
+
+ return copy_to_user(uregs, regs, sizeof(struct pt_regs)) ? -EFAULT : 0;
+}
+
+/*
+ * Set all user integer registers.
+ */
+static int ptrace_setregs(struct task_struct *tsk, void __user *uregs)
+{
+ struct pt_regs newregs;
+ int ret;
+
+ ret = -EFAULT;
+ if (copy_from_user(&newregs, uregs, sizeof(struct pt_regs)) == 0) {
+ struct pt_regs *regs = task_pt_regs(tsk);
+ *regs = newregs;
+ ret = 0;
+ }
+
+ return ret;
+}
+
+void user_enable_single_step(struct task_struct *child)
+{
+ /* far_epc is the target of branch */
+ unsigned int epc, far_epc = 0;
+ unsigned long epc_insn, far_epc_insn;
+ int ninsn_type; /* next insn type 0=16b, 1=32b */
+ unsigned int tmp, tmp2;
+ struct pt_regs *regs = task_pt_regs(child);
+ child->thread.single_step = 1;
+ child->thread.ss_nextcnt = 1;
+ epc = regs->cp0_epc;
+
+ read_tsk_long(child, epc, &epc_insn);
+
+ if (is_16bitinsn(epc_insn)) {
+ if ((epc_insn & J16M) == J16) {
+ tmp = epc_insn & 0xFFE;
+ epc = (epc & 0xFFFFF000) | tmp;
+ } else if ((epc_insn & B16M) == B16) {
+ child->thread.ss_nextcnt = 2;
+ tmp = (epc_insn & 0xFF) << 1;
+ tmp = tmp << 23;
+ tmp = (unsigned int)((int) tmp >> 23);
+ far_epc = epc + tmp;
+ epc += 2;
+ } else if ((epc_insn & BR16M) == BR16) {
+ child->thread.ss_nextcnt = 2;
+ tmp = (epc_insn >> 4) & 0xF;
+ far_epc = regs->regs[tmp];
+ epc += 2;
+ } else
+ epc += 2;
+ } else {
+ if ((epc_insn & J32M) == J32) {
+ tmp = epc_insn & 0x03FFFFFE;
+ tmp2 = tmp & 0x7FFF;
+ tmp = (((tmp >> 16) & 0x3FF) << 15) | tmp2;
+ epc = (epc & 0xFFC00000) | tmp;
+ } else if ((epc_insn & B32M) == B32) {
+ child->thread.ss_nextcnt = 2;
+ tmp = epc_insn & 0x03FFFFFE; /* discard LK bit */
+ tmp2 = tmp & 0x3FF;
+ tmp = (((tmp >> 16) & 0x3FF) << 10) | tmp2; /* 20bit */
+ tmp = tmp << 12;
+ tmp = (unsigned int)((int) tmp >> 12);
+ far_epc = epc + tmp;
+ epc += 4;
+ } else if ((epc_insn & BR32M) == BR32) {
+ child->thread.ss_nextcnt = 2;
+ tmp = (epc_insn >> 16) & 0x1F;
+ far_epc = regs->regs[tmp];
+ epc += 4;
+ } else
+ epc += 4;
+ }
+
+ if (child->thread.ss_nextcnt == 1) {
+ read_tsk_long(child, epc, &epc_insn);
+
+ if (is_16bitinsn(epc_insn)) {
+ write_tsk_short(child, epc, SINGLESTEP16_INSN);
+ ninsn_type = 0;
+ } else {
+ write_tsk_long(child, epc, SINGLESTEP32_INSN);
+ ninsn_type = 1;
+ }
+
+ if (ninsn_type == 0) { /* 16bits */
+ child->thread.insn1_type = 0;
+ child->thread.addr1 = epc;
+ /* the insn may have 32bit data */
+ child->thread.insn1 = (short)epc_insn;
+ } else {
+ child->thread.insn1_type = 1;
+ child->thread.addr1 = epc;
+ child->thread.insn1 = epc_insn;
+ }
+ } else {
+ /* branch! have two target child->thread.ss_nextcnt=2 */
+ read_tsk_long(child, epc, &epc_insn);
+ read_tsk_long(child, far_epc, &far_epc_insn);
+ if (is_16bitinsn(epc_insn)) {
+ write_tsk_short(child, epc, SINGLESTEP16_INSN);
+ ninsn_type = 0;
+ } else {
+ write_tsk_long(child, epc, SINGLESTEP32_INSN);
+ ninsn_type = 1;
+ }
+
+ if (ninsn_type == 0) { /* 16bits */
+ child->thread.insn1_type = 0;
+ child->thread.addr1 = epc;
+ /* the insn may have 32bit data */
+ child->thread.insn1 = (short)epc_insn;
+ } else {
+ child->thread.insn1_type = 1;
+ child->thread.addr1 = epc;
+ child->thread.insn1 = epc_insn;
+ }
+
+ if (is_16bitinsn(far_epc_insn)) {
+ write_tsk_short(child, far_epc, SINGLESTEP16_INSN);
+ ninsn_type = 0;
+ } else {
+ write_tsk_long(child, far_epc, SINGLESTEP32_INSN);
+ ninsn_type = 1;
+ }
+
+ if (ninsn_type == 0) { /* 16bits */
+ child->thread.insn2_type = 0;
+ child->thread.addr2 = far_epc;
+ /* the insn may have 32bit data */
+ child->thread.insn2 = (short)far_epc_insn;
+ } else {
+ child->thread.insn2_type = 1;
+ child->thread.addr2 = far_epc;
+ child->thread.insn2 = far_epc_insn;
+ }
+ }
+}
+
+void user_disable_single_step(struct task_struct *child)
+{
+ if (child->thread.insn1_type == 0)
+ write_tsk_short(child, child->thread.addr1,
+ child->thread.insn1);
+
+ if (child->thread.insn1_type == 1)
+ write_tsk_long(child, child->thread.addr1,
+ child->thread.insn1);
+
+ if (child->thread.ss_nextcnt == 2) { /* branch */
+ if (child->thread.insn1_type == 0)
+ write_tsk_short(child, child->thread.addr1,
+ child->thread.insn1);
+ if (child->thread.insn1_type == 1)
+ write_tsk_long(child, child->thread.addr1,
+ child->thread.insn1);
+ if (child->thread.insn2_type == 0)
+ write_tsk_short(child, child->thread.addr2,
+ child->thread.insn2);
+ if (child->thread.insn2_type == 1)
+ write_tsk_long(child, child->thread.addr2,
+ child->thread.insn2);
+ }
+
+ child->thread.single_step = 0;
+ child->thread.ss_nextcnt = 0;
+}
+
+void ptrace_disable(struct task_struct *child)
+{
+ user_disable_single_step(child);
+}
+
+long
+arch_ptrace(struct task_struct *child, long request, long addr, long data)
+{
+ int ret;
+ unsigned long __user *datap = (void __user *)data;
+
+ switch (request) {
+ /* Read the word at location addr in the USER area. */
+ case PTRACE_PEEKUSR: {
+ struct pt_regs *regs;
+ unsigned long tmp;
+
+ regs = task_pt_regs(child);
+
+ tmp = 0; /* Default return value. */
+ switch (addr) {
+ case 0 ... 31:
+ tmp = regs->regs[addr];
+ break;
+ case PC:
+ tmp = regs->cp0_epc;
+ break;
+ case ECR:
+ tmp = regs->cp0_ecr;
+ break;
+ case EMA:
+ tmp = regs->cp0_ema;
+ break;
+ case CEH:
+ tmp = regs->ceh;
+ break;
+ case CEL:
+ tmp = regs->cel;
+ break;
+ case CONDITION:
+ tmp = regs->cp0_condition;
+ break;
+ case PSR:
+ tmp = regs->cp0_psr;
+ break;
+ case COUNTER:
+ tmp = regs->sr0;
+ break;
+ case LDCR:
+ tmp = regs->sr1;
+ break;
+ case STCR:
+ tmp = regs->sr2;
+ break;
+ default:
+ tmp = 0;
+ return -EIO;
+ }
+
+ ret = put_user(tmp, (unsigned int __user *) datap);
+ return ret;
+ }
+
+ case PTRACE_POKEUSR: {
+ struct pt_regs *regs;
+ ret = 0;
+ regs = task_pt_regs(child);
+
+ switch (addr) {
+ case 0 ... 31:
+ regs->regs[addr] = data;
+ break;
+ case PC:
+ regs->cp0_epc = data;
+ break;
+ case CEH:
+ regs->ceh = data;
+ break;
+ case CEL:
+ regs->cel = data;
+ break;
+ case CONDITION:
+ regs->cp0_condition = data;
+ break;
+ case PSR:
+ case COUNTER:
+ case STCR:
+ case LDCR:
+ break; /* user can't write the reg */
+ default:
+ /* The rest are not allowed. */
+ ret = -EIO;
+ break;
+ }
+ break;
+ }
+
+ case PTRACE_GETREGS:
+ ret = ptrace_getregs(child, (void __user *)datap);
+ break;
+
+ case PTRACE_SETREGS:
+ ret = ptrace_setregs(child, (void __user *)datap);
+ break;
+
+ default:
+ ret = ptrace_request(child, request, addr, data);
+ break;
+ }
+
+ return ret;
+}
+
+/*
+ * Notification of system call entry/exit
+ * - triggered by current->work.syscall_trace
+ */
+asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
+{
+ if (!(current->ptrace & PT_PTRACED))
+ return;
+
+ if (!test_thread_flag(TIF_SYSCALL_TRACE))
+ return;
+
+ /* The 0x80 provides a way for the tracing parent to distinguish
+ between a syscall stop and SIGTRAP delivery. */
+ ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) ?
+ 0x80 : 0));
+
+ /*
+ * this isn't the same as continuing with a signal, but it will do
+ * for normal use. strace only continues with a signal if the
+ * stopping signal is not SIGTRAP. -brl
+ */
+ if (current->exit_code) {
+ send_sig(current->exit_code, current, 1);
+ current->exit_code = 0;
+ }
+}
--- /dev/null
+/*
+ * arch/score/kernel/setup.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/bootmem.h>
+#include <linux/initrd.h>
+#include <linux/ioport.h>
+#include <linux/seq_file.h>
+#include <linux/screen_info.h>
+
+#include <asm-generic/sections.h>
+
+struct screen_info screen_info;
+unsigned long kernelsp;
+
+static char command_line[COMMAND_LINE_SIZE];
+static struct resource code_resource = { .name = "Kernel code",};
+static struct resource data_resource = { .name = "Kernel data",};
+
+static void __init bootmem_init(void)
+{
+ unsigned long reserved_end, bootmap_size;
+ unsigned long size = initrd_end - initrd_start;
+
+ reserved_end = (unsigned long)_end;
+
+ min_low_pfn = 0;
+ max_low_pfn = MEM_SIZE / PAGE_SIZE;
+
+ /* Initialize the boot-time allocator with low memory only. */
+ bootmap_size = init_bootmem_node(NODE_DATA(0), reserved_end,
+ min_low_pfn, max_low_pfn);
+ add_active_range(0, min_low_pfn, max_low_pfn);
+
+ free_bootmem(PFN_PHYS(reserved_end),
+ (max_low_pfn - reserved_end) << PAGE_SHIFT);
+ memory_present(0, reserved_end, max_low_pfn);
+
+ /* Reserve space for the bootmem bitmap. */
+ reserve_bootmem(PFN_PHYS(reserved_end), bootmap_size, BOOTMEM_DEFAULT);
+
+ if (size == 0) {
+ printk(KERN_INFO "Initrd not found or empty");
+ goto disable;
+ }
+
+ if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) {
+ printk(KERN_ERR "Initrd extends beyond end of memory");
+ goto disable;
+ }
+
+ /* Reserve space for the initrd bitmap. */
+ reserve_bootmem(__pa(initrd_start), size, BOOTMEM_DEFAULT);
+ initrd_below_start_ok = 1;
+
+ pr_info("Initial ramdisk at: 0x%lx (%lu bytes)\n",
+ initrd_start, size);
+ return;
+disable:
+ printk(KERN_CONT " - disabling initrd\n");
+ initrd_start = 0;
+ initrd_end = 0;
+}
+
+static void __init resource_init(void)
+{
+ struct resource *res;
+
+ code_resource.start = (unsigned long)_text;
+ code_resource.end = (unsigned long)_etext - 1;
+ data_resource.start = (unsigned long)_etext;
+ data_resource.end = (unsigned long)_edata - 1;
+
+ res = alloc_bootmem(sizeof(struct resource));
+ res->name = "System RAM";
+ res->start = 0;
+ res->end = MEM_SIZE - 1;
+ res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+ request_resource(&iomem_resource, res);
+
+ request_resource(res, &code_resource);
+ request_resource(res, &data_resource);
+}
+
+void __init setup_arch(char **cmdline_p)
+{
+ randomize_va_space = 0;
+ *cmdline_p = command_line;
+
+ cpu_cache_init();
+ tlb_init();
+ bootmem_init();
+ paging_init();
+ resource_init();
+}
+
+static int show_cpuinfo(struct seq_file *m, void *v)
+{
+ unsigned long n = (unsigned long) v - 1;
+
+ seq_printf(m, "processor\t\t: %ld\n", n);
+ seq_printf(m, "\n");
+
+ return 0;
+}
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+ unsigned long i = *pos;
+
+ return i < 1 ? (void *) (i + 1) : NULL;
+}
+
+static void *c_next(struct seq_file *m, void *v, loff_t *pos)
+{
+ ++*pos;
+ return c_start(m, pos);
+}
+
+static void c_stop(struct seq_file *m, void *v)
+{
+}
+
+const struct seq_operations cpuinfo_op = {
+ .start = c_start,
+ .next = c_next,
+ .stop = c_stop,
+ .show = show_cpuinfo,
+};
+
+static int __init topology_init(void)
+{
+ return 0;
+}
+
+subsys_initcall(topology_init);
--- /dev/null
+/*
+ * arch/score/kernel/signal.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/unistd.h>
+#include <linux/uaccess.h>
+
+#include <asm/syscalls.h>
+#include <asm/ucontext.h>
+
+#include <asm/cacheflush.h>
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+struct rt_sigframe {
+ u32 rs_ass[4]; /* argument save space */
+ u32 rs_code[2]; /* signal trampoline */
+ struct siginfo rs_info;
+ struct ucontext rs_uc;
+};
+
+static int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
+{
+ int err = 0;
+ unsigned long reg;
+
+ reg = regs->cp0_epc; err |= __put_user(reg, &sc->sc_pc);
+ err |= __put_user(regs->cp0_psr, &sc->sc_psr);
+ err |= __put_user(regs->cp0_condition, &sc->sc_condition);
+
+
+#define save_gp_reg(i) { \
+ reg = regs->regs[i]; \
+ err |= __put_user(reg, &sc->sc_regs[i]); \
+} while (0)
+ save_gp_reg(0); save_gp_reg(1); save_gp_reg(2);
+ save_gp_reg(3); save_gp_reg(4); save_gp_reg(5);
+ save_gp_reg(6); save_gp_reg(7); save_gp_reg(8);
+ save_gp_reg(9); save_gp_reg(10); save_gp_reg(11);
+ save_gp_reg(12); save_gp_reg(13); save_gp_reg(14);
+ save_gp_reg(15); save_gp_reg(16); save_gp_reg(17);
+ save_gp_reg(18); save_gp_reg(19); save_gp_reg(20);
+ save_gp_reg(21); save_gp_reg(22); save_gp_reg(23);
+ save_gp_reg(24); save_gp_reg(25); save_gp_reg(26);
+ save_gp_reg(27); save_gp_reg(28); save_gp_reg(29);
+#undef save_gp_reg
+
+ reg = regs->ceh; err |= __put_user(reg, &sc->sc_mdceh);
+ reg = regs->cel; err |= __put_user(reg, &sc->sc_mdcel);
+ err |= __put_user(regs->cp0_ecr, &sc->sc_ecr);
+ err |= __put_user(regs->cp0_ema, &sc->sc_ema);
+
+ return err;
+}
+
+static int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
+{
+ int err = 0;
+ u32 reg;
+
+ err |= __get_user(regs->cp0_epc, &sc->sc_pc);
+ err |= __get_user(regs->cp0_condition, &sc->sc_condition);
+
+ err |= __get_user(reg, &sc->sc_mdceh);
+ regs->ceh = (int) reg;
+ err |= __get_user(reg, &sc->sc_mdcel);
+ regs->cel = (int) reg;
+
+ err |= __get_user(reg, &sc->sc_psr);
+ regs->cp0_psr = (int) reg;
+ err |= __get_user(reg, &sc->sc_ecr);
+ regs->cp0_ecr = (int) reg;
+ err |= __get_user(reg, &sc->sc_ema);
+ regs->cp0_ema = (int) reg;
+
+#define restore_gp_reg(i) do { \
+ err |= __get_user(reg, &sc->sc_regs[i]); \
+ regs->regs[i] = reg; \
+} while (0)
+ restore_gp_reg(0); restore_gp_reg(1); restore_gp_reg(2);
+ restore_gp_reg(3); restore_gp_reg(4); restore_gp_reg(5);
+ restore_gp_reg(6); restore_gp_reg(7); restore_gp_reg(8);
+ restore_gp_reg(9); restore_gp_reg(10); restore_gp_reg(11);
+ restore_gp_reg(12); restore_gp_reg(13); restore_gp_reg(14);
+ restore_gp_reg(15); restore_gp_reg(16); restore_gp_reg(17);
+ restore_gp_reg(18); restore_gp_reg(19); restore_gp_reg(20);
+ restore_gp_reg(21); restore_gp_reg(22); restore_gp_reg(23);
+ restore_gp_reg(24); restore_gp_reg(25); restore_gp_reg(26);
+ restore_gp_reg(27); restore_gp_reg(28); restore_gp_reg(29);
+#undef restore_gp_reg
+
+ return err;
+}
+
+/*
+ * Determine which stack to use..
+ */
+static void __user *get_sigframe(struct k_sigaction *ka,
+ struct pt_regs *regs, size_t frame_size)
+{
+ unsigned long sp;
+
+ /* Default to using normal stack */
+ sp = regs->regs[0];
+ sp -= 32;
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if ((ka->sa.sa_flags & SA_ONSTACK) && (!on_sig_stack(sp)))
+ sp = current->sas_ss_sp + current->sas_ss_size;
+
+ return (void __user*)((sp - frame_size) & ~7);
+}
+
+asmlinkage long
+score_sigaltstack(struct pt_regs *regs)
+{
+ const stack_t __user *uss = (const stack_t __user *) regs->regs[4];
+ stack_t __user *uoss = (stack_t __user *) regs->regs[5];
+ unsigned long usp = regs->regs[0];
+
+ return do_sigaltstack(uss, uoss, usp);
+}
+
+asmlinkage long
+score_rt_sigreturn(struct pt_regs *regs)
+{
+ struct rt_sigframe __user *frame;
+ sigset_t set;
+ stack_t st;
+ int sig;
+
+ frame = (struct rt_sigframe __user *) regs->regs[0];
+ if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+ goto badframe;
+ if (__copy_from_user(&set, &frame->rs_uc.uc_sigmask, sizeof(set)))
+ goto badframe;
+
+ sigdelsetmask(&set, ~_BLOCKABLE);
+ spin_lock_irq(¤t->sighand->siglock);
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ sig = restore_sigcontext(regs, &frame->rs_uc.uc_mcontext);
+ if (sig < 0)
+ goto badframe;
+ else if (sig)
+ force_sig(sig, current);
+
+ if (__copy_from_user(&st, &frame->rs_uc.uc_stack, sizeof(st)))
+ goto badframe;
+
+ /* It is more difficult to avoid calling this function than to
+ call it and ignore errors. */
+ do_sigaltstack((stack_t __user *)&st, NULL, regs->regs[0]);
+
+ __asm__ __volatile__(
+ "mv\tr0, %0\n\t"
+ "la\tr8, syscall_exit\n\t"
+ "br\tr8\n\t"
+ : : "r" (regs) : "r8");
+
+badframe:
+ force_sig(SIGSEGV, current);
+
+ return 0;
+}
+
+static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
+ int signr, sigset_t *set, siginfo_t *info)
+{
+ struct rt_sigframe __user *frame;
+ int err = 0;
+
+ frame = get_sigframe(ka, regs, sizeof(*frame));
+ if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+ goto give_sigsegv;
+
+ /*
+ * Set up the return code ...
+ *
+ * li v0, __NR_rt_sigreturn
+ * syscall
+ */
+ err |= __put_user(0x87788000 + __NR_rt_sigreturn*2,
+ frame->rs_code + 0);
+ err |= __put_user(0x80008002, frame->rs_code + 1);
+ flush_cache_sigtramp((unsigned long) frame->rs_code);
+
+ err |= copy_siginfo_to_user(&frame->rs_info, info);
+ err |= __put_user(0, &frame->rs_uc.uc_flags);
+ err |= __put_user(NULL, &frame->rs_uc.uc_link);
+ err |= __put_user((void __user *)current->sas_ss_sp,
+ &frame->rs_uc.uc_stack.ss_sp);
+ err |= __put_user(sas_ss_flags(regs->regs[0]),
+ &frame->rs_uc.uc_stack.ss_flags);
+ err |= __put_user(current->sas_ss_size,
+ &frame->rs_uc.uc_stack.ss_size);
+ err |= setup_sigcontext(regs, &frame->rs_uc.uc_mcontext);
+ err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set));
+
+ if (err)
+ goto give_sigsegv;
+
+ regs->regs[0] = (unsigned long) frame;
+ regs->regs[3] = (unsigned long) frame->rs_code;
+ regs->regs[4] = signr;
+ regs->regs[5] = (unsigned long) &frame->rs_info;
+ regs->regs[6] = (unsigned long) &frame->rs_uc;
+ regs->regs[29] = (unsigned long) ka->sa.sa_handler;
+ regs->cp0_epc = (unsigned long) ka->sa.sa_handler;
+
+ return 0;
+
+give_sigsegv:
+ if (signr == SIGSEGV)
+ ka->sa.sa_handler = SIG_DFL;
+ force_sig(SIGSEGV, current);
+ return -EFAULT;
+}
+
+static int handle_signal(unsigned long sig, siginfo_t *info,
+ struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs)
+{
+ int ret;
+
+ if (regs->is_syscall) {
+ switch (regs->regs[4]) {
+ case ERESTART_RESTARTBLOCK:
+ case ERESTARTNOHAND:
+ regs->regs[4] = EINTR;
+ break;
+ case ERESTARTSYS:
+ if (!(ka->sa.sa_flags & SA_RESTART)) {
+ regs->regs[4] = EINTR;
+ break;
+ }
+ case ERESTARTNOINTR:
+ regs->regs[4] = regs->orig_r4;
+ regs->regs[7] = regs->orig_r7;
+ regs->cp0_epc -= 8;
+ }
+
+ regs->is_syscall = 0;
+ }
+
+ /*
+ * Set up the stack frame
+ */
+ ret = setup_rt_frame(ka, regs, sig, oldset, info);
+
+ spin_lock_irq(¤t->sighand->siglock);
+ sigorsets(¤t->blocked, ¤t->blocked, &ka->sa.sa_mask);
+ if (!(ka->sa.sa_flags & SA_NODEFER))
+ sigaddset(¤t->blocked, sig);
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ return ret;
+}
+
+static void do_signal(struct pt_regs *regs)
+{
+ struct k_sigaction ka;
+ sigset_t *oldset;
+ siginfo_t info;
+ int signr;
+
+ /*
+ * We want the common case to go fast, which is why we may in certain
+ * cases get here from kernel mode. Just return without doing anything
+ * if so.
+ */
+ if (!user_mode(regs))
+ return;
+
+ if (test_thread_flag(TIF_RESTORE_SIGMASK))
+ oldset = ¤t->saved_sigmask;
+ else
+ oldset = ¤t->blocked;
+
+ signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+ if (signr > 0) {
+ /* Actually deliver the signal. */
+ if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
+ /*
+ * A signal was successfully delivered; the saved
+ * sigmask will have been stored in the signal frame,
+ * and will be restored by sigreturn, so we can simply
+ * clear the TIF_RESTORE_SIGMASK flag.
+ */
+ if (test_thread_flag(TIF_RESTORE_SIGMASK))
+ clear_thread_flag(TIF_RESTORE_SIGMASK);
+ }
+
+ return;
+ }
+
+ if (regs->is_syscall) {
+ if (regs->regs[4] == ERESTARTNOHAND ||
+ regs->regs[4] == ERESTARTSYS ||
+ regs->regs[4] == ERESTARTNOINTR) {
+ regs->regs[4] = regs->orig_r4;
+ regs->regs[7] = regs->orig_r7;
+ regs->cp0_epc -= 8;
+ }
+
+ if (regs->regs[4] == ERESTART_RESTARTBLOCK) {
+ regs->regs[27] = __NR_restart_syscall;
+ regs->regs[4] = regs->orig_r4;
+ regs->regs[7] = regs->orig_r7;
+ regs->cp0_epc -= 8;
+ }
+
+ regs->is_syscall = 0; /* Don't deal with this again. */
+ }
+
+ /*
+ * If there's no signal to deliver, we just put the saved sigmask
+ * back
+ */
+ if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
+ clear_thread_flag(TIF_RESTORE_SIGMASK);
+ sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL);
+ }
+}
+
+/*
+ * notification of userspace execution resumption
+ * - triggered by the TIF_WORK_MASK flags
+ */
+asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused,
+ __u32 thread_info_flags)
+{
+ /* deal with pending signal delivery */
+ if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
+ do_signal(regs);
+}
--- /dev/null
+#include <linux/syscalls.h>
+#include <linux/signal.h>
+#include <linux/unistd.h>
+
+#include <asm/syscalls.h>
+
+#undef __SYSCALL
+#define __SYSCALL(nr, call) [nr] = (call),
+
+void *sys_call_table[__NR_syscalls] = {
+#include <asm/unistd.h>
+};
--- /dev/null
+/*
+ * arch/score/kernel/syscall.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/mman.h>
+#include <linux/module.h>
+#include <linux/unistd.h>
+#include <linux/syscalls.h>
+#include <asm/syscalls.h>
+
+asmlinkage long
+sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
+ unsigned long flags, unsigned long fd, unsigned long pgoff)
+{
+ int error = -EBADF;
+ struct file *file = NULL;
+
+ if (pgoff & (~PAGE_MASK >> 12))
+ return -EINVAL;
+
+ flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+ if (!(flags & MAP_ANONYMOUS)) {
+ file = fget(fd);
+ if (!file)
+ return error;
+ }
+
+ down_write(¤t->mm->mmap_sem);
+ error = do_mmap_pgoff(file, addr, len, prot, flags,
+ pgoff >> (PAGE_SHIFT - 12));
+ up_write(¤t->mm->mmap_sem);
+
+ if (file)
+ fput(file);
+
+ return error;
+}
+
+/*
+ * Clone a task - this clones the calling program thread.
+ * This is called indirectly via a small wrapper
+ */
+asmlinkage long
+score_clone(struct pt_regs *regs)
+{
+ unsigned long clone_flags;
+ unsigned long newsp;
+ int __user *parent_tidptr, *child_tidptr;
+
+ clone_flags = regs->regs[4];
+ newsp = regs->regs[5];
+ if (!newsp)
+ newsp = regs->regs[0];
+ parent_tidptr = (int __user *)regs->regs[6];
+ child_tidptr = (int __user *)regs->regs[8];
+
+ return do_fork(clone_flags, newsp, regs, 0,
+ parent_tidptr, child_tidptr);
+}
+
+/*
+ * sys_execve() executes a new program.
+ * This is called indirectly via a small wrapper
+ */
+asmlinkage long
+score_execve(struct pt_regs *regs)
+{
+ int error;
+ char *filename;
+
+ filename = getname((char __user*)regs->regs[4]);
+ error = PTR_ERR(filename);
+ if (IS_ERR(filename))
+ return error;
+
+ error = do_execve(filename, (char __user *__user*)regs->regs[5],
+ (char __user *__user *) regs->regs[6], regs);
+
+ putname(filename);
+ return error;
+}
+
+/*
+ * Do a system call from kernel instead of calling sys_execve so we
+ * end up with proper pt_regs.
+ */
+int kernel_execve(const char *filename, char *const argv[], char *const envp[])
+{
+ register unsigned long __r4 asm("r4") = (unsigned long) filename;
+ register unsigned long __r5 asm("r5") = (unsigned long) argv;
+ register unsigned long __r6 asm("r6") = (unsigned long) envp;
+ register unsigned long __r7 asm("r7");
+
+ __asm__ __volatile__ (" \n"
+ "ldi r27, %5 \n"
+ "syscall \n"
+ "mv %0, r4 \n"
+ "mv %1, r7 \n"
+ : "=&r" (__r4), "=r" (__r7)
+ : "r" (__r4), "r" (__r5), "r" (__r6), "i" (__NR_execve)
+ : "r8", "r9", "r10", "r11", "r22", "r23", "r24", "r25",
+ "r26", "r27", "memory");
+
+ if (__r7 == 0)
+ return __r4;
+
+ return -__r4;
+}
--- /dev/null
+/*
+ * arch/score/kernel/time.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/clockchips.h>
+#include <linux/interrupt.h>
+
+#include <asm/scoreregs.h>
+
+static irqreturn_t timer_interrupt(int irq, void *dev_id)
+{
+ struct clock_event_device *evdev = dev_id;
+
+ /* clear timer interrupt flag */
+ outl(1, P_TIMER0_CPP_REG);
+ evdev->event_handler(evdev);
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction timer_irq = {
+ .handler = timer_interrupt,
+ .flags = IRQF_DISABLED | IRQF_TIMER,
+ .name = "timer",
+};
+
+static int score_timer_set_next_event(unsigned long delta,
+ struct clock_event_device *evdev)
+{
+ outl((TMR_M_PERIODIC | TMR_IE_ENABLE), P_TIMER0_CTRL);
+ outl(delta, P_TIMER0_PRELOAD);
+ outl(inl(P_TIMER0_CTRL) | TMR_ENABLE, P_TIMER0_CTRL);
+
+ return 0;
+}
+
+static void score_timer_set_mode(enum clock_event_mode mode,
+ struct clock_event_device *evdev)
+{
+ switch (mode) {
+ case CLOCK_EVT_MODE_PERIODIC:
+ outl((TMR_M_PERIODIC | TMR_IE_ENABLE), P_TIMER0_CTRL);
+ outl(SYSTEM_CLOCK/HZ, P_TIMER0_PRELOAD);
+ outl(inl(P_TIMER0_CTRL) | TMR_ENABLE, P_TIMER0_CTRL);
+ break;
+ case CLOCK_EVT_MODE_ONESHOT:
+ case CLOCK_EVT_MODE_SHUTDOWN:
+ case CLOCK_EVT_MODE_RESUME:
+ case CLOCK_EVT_MODE_UNUSED:
+ break;
+ default:
+ BUG();
+ }
+}
+
+static struct clock_event_device score_clockevent = {
+ .name = "score_clockevent",
+ .features = CLOCK_EVT_FEAT_PERIODIC,
+ .shift = 16,
+ .set_next_event = score_timer_set_next_event,
+ .set_mode = score_timer_set_mode,
+};
+
+void __init time_init(void)
+{
+ timer_irq.dev_id = &score_clockevent;
+ setup_irq(IRQ_TIMER , &timer_irq);
+
+ /* setup COMPARE clockevent */
+ score_clockevent.mult = div_sc(SYSTEM_CLOCK, NSEC_PER_SEC,
+ score_clockevent.shift);
+ score_clockevent.max_delta_ns = clockevent_delta2ns((u32)~0,
+ &score_clockevent);
+ score_clockevent.min_delta_ns = clockevent_delta2ns(50,
+ &score_clockevent) + 1;
+ score_clockevent.cpumask = cpumask_of(0);
+ clockevents_register_device(&score_clockevent);
+}
--- /dev/null
+/*
+ * arch/score/kernel/traps.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include <linux/sched.h>
+
+#include <asm/cacheflush.h>
+#include <asm/irq.h>
+#include <asm/irq_regs.h>
+
+unsigned long exception_handlers[32];
+
+/*
+ * The architecture-independent show_stack generator
+ */
+void show_stack(struct task_struct *task, unsigned long *sp)
+{
+ int i;
+ long stackdata;
+
+ sp = sp ? sp : (unsigned long *)&sp;
+
+ printk(KERN_NOTICE "Stack: ");
+ i = 1;
+ while ((long) sp & (PAGE_SIZE - 1)) {
+ if (i && ((i % 8) == 0))
+ printk(KERN_NOTICE "\n");
+ if (i > 40) {
+ printk(KERN_NOTICE " ...");
+ break;
+ }
+
+ if (__get_user(stackdata, sp++)) {
+ printk(KERN_NOTICE " (Bad stack address)");
+ break;
+ }
+
+ printk(KERN_NOTICE " %08lx", stackdata);
+ i++;
+ }
+ printk(KERN_NOTICE "\n");
+}
+
+static void show_trace(long *sp)
+{
+ int i;
+ long addr;
+
+ sp = sp ? sp : (long *) &sp;
+
+ printk(KERN_NOTICE "Call Trace: ");
+ i = 1;
+ while ((long) sp & (PAGE_SIZE - 1)) {
+ if (__get_user(addr, sp++)) {
+ if (i && ((i % 6) == 0))
+ printk(KERN_NOTICE "\n");
+ printk(KERN_NOTICE " (Bad stack address)\n");
+ break;
+ }
+
+ if (kernel_text_address(addr)) {
+ if (i && ((i % 6) == 0))
+ printk(KERN_NOTICE "\n");
+ if (i > 40) {
+ printk(KERN_NOTICE " ...");
+ break;
+ }
+
+ printk(KERN_NOTICE " [<%08lx>]", addr);
+ i++;
+ }
+ }
+ printk(KERN_NOTICE "\n");
+}
+
+static void show_code(unsigned int *pc)
+{
+ long i;
+
+ printk(KERN_NOTICE "\nCode:");
+
+ for (i = -3; i < 6; i++) {
+ unsigned long insn;
+ if (__get_user(insn, pc + i)) {
+ printk(KERN_NOTICE " (Bad address in epc)\n");
+ break;
+ }
+ printk(KERN_NOTICE "%c%08lx%c", (i ? ' ' : '<'),
+ insn, (i ? ' ' : '>'));
+ }
+}
+
+/*
+ * FIXME: really the generic show_regs should take a const pointer argument.
+ */
+void show_regs(struct pt_regs *regs)
+{
+ printk("r0 : %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+ regs->regs[0], regs->regs[1], regs->regs[2], regs->regs[3],
+ regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]);
+ printk("r8 : %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+ regs->regs[8], regs->regs[9], regs->regs[10], regs->regs[11],
+ regs->regs[12], regs->regs[13], regs->regs[14], regs->regs[15]);
+ printk("r16: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+ regs->regs[16], regs->regs[17], regs->regs[18], regs->regs[19],
+ regs->regs[20], regs->regs[21], regs->regs[22], regs->regs[23]);
+ printk("r24: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+ regs->regs[24], regs->regs[25], regs->regs[26], regs->regs[27],
+ regs->regs[28], regs->regs[29], regs->regs[30], regs->regs[31]);
+
+ printk("CEH : %08lx\n", regs->ceh);
+ printk("CEL : %08lx\n", regs->cel);
+
+ printk("EMA:%08lx, epc:%08lx %s\nPSR: %08lx\nECR:%08lx\nCondition : %08lx\n",
+ regs->cp0_ema, regs->cp0_epc, print_tainted(), regs->cp0_psr,
+ regs->cp0_ecr, regs->cp0_condition);
+}
+
+static void show_registers(struct pt_regs *regs)
+{
+ show_regs(regs);
+ printk(KERN_NOTICE "Process %s (pid: %d, stackpage=%08lx)\n",
+ current->comm, current->pid, (unsigned long) current);
+ show_stack(current_thread_info()->task, (long *) regs->regs[0]);
+ show_trace((long *) regs->regs[0]);
+ show_code((unsigned int *) regs->cp0_epc);
+ printk(KERN_NOTICE "\n");
+}
+
+/*
+ * The architecture-independent dump_stack generator
+ */
+void dump_stack(void)
+{
+ show_stack(current_thread_info()->task,
+ (long *) get_irq_regs()->regs[0]);
+}
+EXPORT_SYMBOL(dump_stack);
+
+void __die(const char *str, struct pt_regs *regs, const char *file,
+ const char *func, unsigned long line)
+{
+ console_verbose();
+ printk("%s", str);
+ if (file && func)
+ printk(" in %s:%s, line %ld", file, func, line);
+ printk(":\n");
+ show_registers(regs);
+ do_exit(SIGSEGV);
+}
+
+void __die_if_kernel(const char *str, struct pt_regs *regs,
+ const char *file, const char *func, unsigned long line)
+{
+ if (!user_mode(regs))
+ __die(str, regs, file, func, line);
+}
+
+asmlinkage void do_adelinsn(struct pt_regs *regs)
+{
+ printk("do_ADE-linsn:ema:0x%08lx:epc:0x%08lx\n",
+ regs->cp0_ema, regs->cp0_epc);
+ die_if_kernel("do_ade execution Exception\n", regs);
+ force_sig(SIGBUS, current);
+}
+
+asmlinkage void do_adedata(struct pt_regs *regs)
+{
+ const struct exception_table_entry *fixup;
+ fixup = search_exception_tables(regs->cp0_epc);
+ if (fixup) {
+ regs->cp0_epc = fixup->fixup;
+ return;
+ }
+ printk("do_ADE-data:ema:0x%08lx:epc:0x%08lx\n",
+ regs->cp0_ema, regs->cp0_epc);
+ die_if_kernel("do_ade execution Exception\n", regs);
+ force_sig(SIGBUS, current);
+}
+
+asmlinkage void do_pel(struct pt_regs *regs)
+{
+ die_if_kernel("do_pel execution Exception", regs);
+ force_sig(SIGFPE, current);
+}
+
+asmlinkage void do_cee(struct pt_regs *regs)
+{
+ die_if_kernel("do_cee execution Exception", regs);
+ force_sig(SIGFPE, current);
+}
+
+asmlinkage void do_cpe(struct pt_regs *regs)
+{
+ die_if_kernel("do_cpe execution Exception", regs);
+ force_sig(SIGFPE, current);
+}
+
+asmlinkage void do_be(struct pt_regs *regs)
+{
+ die_if_kernel("do_be execution Exception", regs);
+ force_sig(SIGBUS, current);
+}
+
+asmlinkage void do_ov(struct pt_regs *regs)
+{
+ siginfo_t info;
+
+ die_if_kernel("do_ov execution Exception", regs);
+
+ info.si_code = FPE_INTOVF;
+ info.si_signo = SIGFPE;
+ info.si_errno = 0;
+ info.si_addr = (void *)regs->cp0_epc;
+ force_sig_info(SIGFPE, &info, current);
+}
+
+asmlinkage void do_tr(struct pt_regs *regs)
+{
+ die_if_kernel("do_tr execution Exception", regs);
+ force_sig(SIGTRAP, current);
+}
+
+asmlinkage void do_ri(struct pt_regs *regs)
+{
+ unsigned long epc_insn;
+ unsigned long epc = regs->cp0_epc;
+
+ read_tsk_long(current, epc, &epc_insn);
+ if (current->thread.single_step == 1) {
+ if ((epc == current->thread.addr1) ||
+ (epc == current->thread.addr2)) {
+ user_disable_single_step(current);
+ force_sig(SIGTRAP, current);
+ return;
+ } else
+ BUG();
+ } else if ((epc_insn == BREAKPOINT32_INSN) ||
+ ((epc_insn & 0x0000FFFF) == 0x7002) ||
+ ((epc_insn & 0xFFFF0000) == 0x70020000)) {
+ force_sig(SIGTRAP, current);
+ return;
+ } else {
+ die_if_kernel("do_ri execution Exception", regs);
+ force_sig(SIGILL, current);
+ }
+}
+
+asmlinkage void do_ccu(struct pt_regs *regs)
+{
+ die_if_kernel("do_ccu execution Exception", regs);
+ force_sig(SIGILL, current);
+}
+
+asmlinkage void do_reserved(struct pt_regs *regs)
+{
+ /*
+ * Game over - no way to handle this if it ever occurs. Most probably
+ * caused by a new unknown cpu type or after another deadly
+ * hard/software error.
+ */
+ die_if_kernel("do_reserved execution Exception", regs);
+ show_regs(regs);
+ panic("Caught reserved exception - should not happen.");
+}
+
+/*
+ * NMI exception handler.
+ */
+void nmi_exception_handler(struct pt_regs *regs)
+{
+ die_if_kernel("nmi_exception_handler execution Exception", regs);
+ die("NMI", regs);
+}
+
+/* Install CPU exception handler */
+void *set_except_vector(int n, void *addr)
+{
+ unsigned long handler = (unsigned long) addr;
+ unsigned long old_handler = exception_handlers[n];
+
+ exception_handlers[n] = handler;
+ return (void *)old_handler;
+}
+
+void __init trap_init(void)
+{
+ int i;
+
+ pgd_current = (unsigned long)init_mm.pgd;
+ /* DEBUG EXCEPTION */
+ memcpy((void *)DEBUG_VECTOR_BASE_ADDR,
+ &debug_exception_vector, DEBUG_VECTOR_SIZE);
+ /* NMI EXCEPTION */
+ memcpy((void *)GENERAL_VECTOR_BASE_ADDR,
+ &general_exception_vector, GENERAL_VECTOR_SIZE);
+
+ /*
+ * Initialise exception handlers
+ */
+ for (i = 0; i <= 31; i++)
+ set_except_vector(i, handle_reserved);
+
+ set_except_vector(1, handle_nmi);
+ set_except_vector(2, handle_adelinsn);
+ set_except_vector(3, handle_tlb_refill);
+ set_except_vector(4, handle_tlb_invaild);
+ set_except_vector(5, handle_ibe);
+ set_except_vector(6, handle_pel);
+ set_except_vector(7, handle_sys);
+ set_except_vector(8, handle_ccu);
+ set_except_vector(9, handle_ri);
+ set_except_vector(10, handle_tr);
+ set_except_vector(11, handle_adedata);
+ set_except_vector(12, handle_adedata);
+ set_except_vector(13, handle_tlb_refill);
+ set_except_vector(14, handle_tlb_invaild);
+ set_except_vector(15, handle_mod);
+ set_except_vector(16, handle_cee);
+ set_except_vector(17, handle_cpe);
+ set_except_vector(18, handle_dbe);
+ flush_icache_range(DEBUG_VECTOR_BASE_ADDR, IRQ_VECTOR_BASE_ADDR);
+
+ atomic_inc(&init_mm.mm_count);
+ current->active_mm = &init_mm;
+ cpu_cache_init();
+}
--- /dev/null
+/*
+ * arch/score/kernel/vmlinux.lds.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <asm-generic/vmlinux.lds.h>
+
+OUTPUT_ARCH(score)
+ENTRY(_stext)
+
+jiffies = jiffies_64;
+
+SECTIONS
+{
+ . = CONFIG_MEMORY_START + 0x2000;
+ /* read-only */
+ .text : {
+ _text = .; /* Text and read-only data */
+ TEXT_TEXT
+ SCHED_TEXT
+ LOCK_TEXT
+ KPROBES_TEXT
+ *(.text.*)
+ *(.fixup)
+ . = ALIGN (4) ;
+ _etext = .; /* End of text section */
+ }
+
+ . = ALIGN(16);
+ RODATA
+
+ /* Exception table */
+ . = ALIGN(16);
+ __ex_table : {
+ __start___ex_table = .;
+ *(__ex_table)
+ __stop___ex_table = .;
+ }
+
+ /* writeable */
+ .data ALIGN (4096): {
+ *(.data.init_task)
+
+ DATA_DATA
+ CONSTRUCTORS
+ }
+
+ /* We want the small data sections together, so single-instruction offsets
+ can access them all, and initialized data all before uninitialized, so
+ we can shorten the on-disk segment size. */
+ . = ALIGN(8);
+ .sdata : {
+ *(.sdata)
+ }
+
+ . = ALIGN(32);
+ .data.cacheline_aligned : {
+ *(.data.cacheline_aligned)
+ }
+ _edata = .; /* End of data section */
+
+ /* will be freed after init */
+ . = ALIGN(4096); /* Init code and data */
+ __init_begin = .;
+
+ . = ALIGN(4096);
+ .init.text : {
+ _sinittext = .;
+ INIT_TEXT
+ _einittext = .;
+ }
+ .init.data : {
+ INIT_DATA
+ }
+ . = ALIGN(16);
+ .init.setup : {
+ __setup_start = .;
+ *(.init.setup)
+ __setup_end = .;
+ }
+
+ .initcall.init : {
+ __initcall_start = .;
+ INITCALLS
+ __initcall_end = .;
+ }
+
+ .con_initcall.init : {
+ __con_initcall_start = .;
+ *(.con_initcall.init)
+ __con_initcall_end = .;
+ }
+ SECURITY_INIT
+
+ /* .exit.text is discarded at runtime, not link time, to deal with
+ * references from .rodata
+ */
+ .exit.text : {
+ EXIT_TEXT
+ }
+ .exit.data : {
+ EXIT_DATA
+ }
+#if defined(CONFIG_BLK_DEV_INITRD)
+ .init.ramfs ALIGN(4096): {
+ __initramfs_start = .;
+ *(.init.ramfs)
+ __initramfs_end = .;
+ . = ALIGN(4);
+ LONG(0);
+ }
+#endif
+ . = ALIGN(4096);
+ __init_end = .;
+ /* freed after init ends here */
+
+ __bss_start = .; /* BSS */
+ .sbss : {
+ *(.sbss)
+ *(.scommon)
+ }
+ .bss : {
+ *(.bss)
+ *(COMMON)
+ }
+ __bss_stop = .;
+ _end = .;
+}
--- /dev/null
+#
+# Makefile for SCORE-specific library files..
+#
+
+lib-y += string.o checksum.o checksum_copy.o
+
+# libgcc-style stuff needed in the kernel
+obj-y += ashldi3.o ashrdi3.o cmpdi2.o lshrdi3.o ucmpdi2.o
--- /dev/null
+/*
+ * arch/score/lib/ashldi3.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+long long __ashldi3(long long u, word_type b)
+{
+ DWunion uu, w;
+ word_type bm;
+
+ if (b == 0)
+ return u;
+
+ uu.ll = u;
+ bm = 32 - b;
+
+ if (bm <= 0) {
+ w.s.low = 0;
+ w.s.high = (unsigned int) uu.s.low << -bm;
+ } else {
+ const unsigned int carries = (unsigned int) uu.s.low >> bm;
+
+ w.s.low = (unsigned int) uu.s.low << b;
+ w.s.high = ((unsigned int) uu.s.high << b) | carries;
+ }
+
+ return w.ll;
+}
+EXPORT_SYMBOL(__ashldi3);
--- /dev/null
+/*
+ * arch/score/lib/ashrdi3.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+long long __ashrdi3(long long u, word_type b)
+{
+ DWunion uu, w;
+ word_type bm;
+
+ if (b == 0)
+ return u;
+
+ uu.ll = u;
+ bm = 32 - b;
+
+ if (bm <= 0) {
+ /* w.s.high = 1..1 or 0..0 */
+ w.s.high =
+ uu.s.high >> 31;
+ w.s.low = uu.s.high >> -bm;
+ } else {
+ const unsigned int carries = (unsigned int) uu.s.high << bm;
+
+ w.s.high = uu.s.high >> b;
+ w.s.low = ((unsigned int) uu.s.low >> b) | carries;
+ }
+
+ return w.ll;
+}
+EXPORT_SYMBOL(__ashrdi3);
--- /dev/null
+/*
+ * arch/score/lib/csum_partial.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <linux/linkage.h>
+
+#define ADDC(sum,reg) \
+ add sum, sum, reg; \
+ cmp.c reg, sum; \
+ bleu 9f; \
+ addi sum, 0x1; \
+9:
+
+#define CSUM_BIGCHUNK(src, offset, sum) \
+ lw r8, [src, offset + 0x00]; \
+ lw r9, [src, offset + 0x04]; \
+ lw r10, [src, offset + 0x08]; \
+ lw r11, [src, offset + 0x0c]; \
+ ADDC(sum, r8); \
+ ADDC(sum, r9); \
+ ADDC(sum, r10); \
+ ADDC(sum, r11); \
+ lw r8, [src, offset + 0x10]; \
+ lw r9, [src, offset + 0x14]; \
+ lw r10, [src, offset + 0x18]; \
+ lw r11, [src, offset + 0x1c]; \
+ ADDC(sum, r8); \
+ ADDC(sum, r9); \
+ ADDC(sum, r10); \
+ ADDC(sum, r11); \
+
+#define src r4
+#define dest r5
+#define sum r27
+
+ .text
+/* unknown src alignment and < 8 bytes to go */
+small_csumcpy:
+ mv r5, r10
+ ldi r9, 0x0
+ cmpi.c r25, 0x1
+ beq pass_small_set_t7 /*already set, jump to pass_small_set_t7*/
+ andri.c r25,r4 , 0x1 /*Is src 2 bytes aligned?*/
+
+pass_small_set_t7:
+ beq aligned
+ cmpi.c r5, 0x0
+ beq fold
+ lbu r9, [src]
+ slli r9,r9, 0x8 /*Little endian*/
+ ADDC(sum, r9)
+ addi src, 0x1
+ subi.c r5, 0x1
+
+ /*len still a full word */
+aligned:
+ andri.c r8, r5, 0x4 /*Len >= 4?*/
+ beq len_less_4bytes
+
+ /* Still a full word (4byte) to go,and the src is word aligned.*/
+ andri.c r8, src, 0x3 /*src is 4bytes aligned, so use LW!!*/
+ beq four_byte_aligned
+ lhu r9, [src]
+ addi src, 2
+ ADDC(sum, r9)
+ lhu r9, [src]
+ addi src, 2
+ ADDC(sum, r9)
+ b len_less_4bytes
+
+four_byte_aligned: /* Len >=4 and four byte aligned */
+ lw r9, [src]
+ addi src, 4
+ ADDC(sum, r9)
+
+len_less_4bytes: /* 2 byte aligned aligned and length<4B */
+ andri.c r8, r5, 0x2
+ beq len_less_2bytes
+ lhu r9, [src]
+ addi src, 0x2 /* src+=2 */
+ ADDC(sum, r9)
+
+len_less_2bytes: /* len = 1 */
+ andri.c r8, r5, 0x1
+ beq fold /* less than 2 and not equal 1--> len=0 -> fold */
+ lbu r9, [src]
+
+fold_ADDC:
+ ADDC(sum, r9)
+fold:
+ /* fold checksum */
+ slli r26, sum, 16
+ add sum, sum, r26
+ cmp.c r26, sum
+ srli sum, sum, 16
+ bleu 1f /* if r26<=sum */
+ addi sum, 0x1 /* r26>sum */
+1:
+ /* odd buffer alignment? r25 was set in csum_partial */
+ cmpi.c r25, 0x0
+ beq 1f
+ slli r26, sum, 8
+ srli sum, sum, 8
+ or sum, sum, r26
+ andi sum, 0xffff
+1:
+ .set optimize
+ /* Add the passed partial csum. */
+ ADDC(sum, r6)
+ mv r4, sum
+ br r3
+ .set volatile
+
+ .align 5
+ENTRY(csum_partial)
+ ldi sum, 0
+ ldi r25, 0
+ mv r10, r5
+ cmpi.c r5, 0x8
+ blt small_csumcpy /* < 8(singed) bytes to copy */
+ cmpi.c r5, 0x0
+ beq out
+ andri.c r25, src, 0x1 /* odd buffer? */
+
+ beq word_align
+hword_align: /* 1 byte */
+ lbu r8, [src]
+ subi r5, 0x1
+ slli r8, r8, 8
+ ADDC(sum, r8)
+ addi src, 0x1
+
+word_align: /* 2 bytes */
+ andri.c r8, src, 0x2 /* 4bytes(dword)_aligned? */
+ beq dword_align /* not, maybe dword_align */
+ lhu r8, [src]
+ subi r5, 0x2
+ ADDC(sum, r8)
+ addi src, 0x2
+
+dword_align: /* 4bytes */
+ mv r26, r5 /* maybe useless when len >=56 */
+ ldi r8, 56
+ cmp.c r8, r5
+ bgtu do_end_words /* if a1(len)<t0(56) ,unsigned */
+ andri.c r26, src, 0x4
+ beq qword_align
+ lw r8, [src]
+ subi r5, 0x4
+ ADDC(sum, r8)
+ addi src, 0x4
+
+qword_align: /* 8 bytes */
+ andri.c r26, src, 0x8
+ beq oword_align
+ lw r8, [src, 0x0]
+ lw r9, [src, 0x4]
+ subi r5, 0x8 /* len-=0x8 */
+ ADDC(sum, r8)
+ ADDC(sum, r9)
+ addi src, 0x8
+
+oword_align: /* 16bytes */
+ andri.c r26, src, 0x10
+ beq begin_movement
+ lw r10, [src, 0x08]
+ lw r11, [src, 0x0c]
+ lw r8, [src, 0x00]
+ lw r9, [src, 0x04]
+ ADDC(sum, r10)
+ ADDC(sum, r11)
+ ADDC(sum, r8)
+ ADDC(sum, r9)
+ subi r5, 0x10
+ addi src, 0x10
+
+begin_movement:
+ srli.c r26, r5, 0x7 /* len>=128? */
+ beq 1f /* len<128 */
+
+/* r26 is the result that computed in oword_align */
+move_128bytes:
+ CSUM_BIGCHUNK(src, 0x00, sum)
+ CSUM_BIGCHUNK(src, 0x20, sum)
+ CSUM_BIGCHUNK(src, 0x40, sum)
+ CSUM_BIGCHUNK(src, 0x60, sum)
+ subi.c r26, 0x01 /* r26 equals len/128 */
+ addi src, 0x80
+ bne move_128bytes
+
+1: /* len<128,we process 64byte here */
+ andri.c r10, r5, 0x40
+ beq 1f
+
+move_64bytes:
+ CSUM_BIGCHUNK(src, 0x00, sum)
+ CSUM_BIGCHUNK(src, 0x20, sum)
+ addi src, 0x40
+
+1: /* len<64 */
+ andri r26, r5, 0x1c /* 0x1c=28 */
+ andri.c r10, r5, 0x20
+ beq do_end_words /* decided by andri */
+
+move_32bytes:
+ CSUM_BIGCHUNK(src, 0x00, sum)
+ andri r26, r5, 0x1c
+ addri src, src, 0x20
+
+do_end_words: /* len<32 */
+ /* r26 was set already in dword_align */
+ cmpi.c r26, 0x0
+ beq maybe_end_cruft /* len<28 or len<56 */
+ srli r26, r26, 0x2
+
+end_words:
+ lw r8, [src]
+ subi.c r26, 0x1 /* unit is 4 byte */
+ ADDC(sum, r8)
+ addi src, 0x4
+ cmpi.c r26, 0x0
+ bne end_words /* r26!=0 */
+
+maybe_end_cruft: /* len<4 */
+ andri r10, r5, 0x3
+
+small_memcpy:
+ mv r5, r10
+ j small_csumcpy
+
+out:
+ mv r4, sum
+ br r3
+
+END(csum_partial)
--- /dev/null
+/*
+ * arch/score/lib/csum_partial_copy.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <net/checksum.h>
+
+#include <asm/uaccess.h>
+
+unsigned int csum_partial_copy(const char *src, char *dst,
+ int len, unsigned int sum)
+{
+ sum = csum_partial(src, len, sum);
+ memcpy(dst, src, len);
+
+ return sum;
+}
+
+unsigned int csum_partial_copy_from_user(const char *src, char *dst,
+ int len, unsigned int sum,
+ int *err_ptr)
+{
+ int missing;
+
+ missing = copy_from_user(dst, src, len);
+ if (missing) {
+ memset(dst + len - missing, 0, missing);
+ *err_ptr = -EFAULT;
+ }
+
+ return csum_partial(dst, len, sum);
+}
--- /dev/null
+/*
+ * arch/score/lib/cmpdi2.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+word_type __cmpdi2(long long a, long long b)
+{
+ const DWunion au = {
+ .ll = a
+ };
+ const DWunion bu = {
+ .ll = b
+ };
+
+ if (au.s.high < bu.s.high)
+ return 0;
+ else if (au.s.high > bu.s.high)
+ return 2;
+
+ if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
+ return 0;
+ else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
+ return 2;
+
+ return 1;
+}
+EXPORT_SYMBOL(__cmpdi2);
--- /dev/null
+/*
+ * arch/score/lib/libgcc.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+#ifndef __ASM_LIBGCC_H
+#define __ASM_LIBGCC_H
+
+#include <asm/byteorder.h>
+
+typedef int word_type __attribute__((mode(__word__)));
+
+struct DWstruct {
+ int low, high;
+};
+
+typedef union {
+ struct DWstruct s;
+ long long ll;
+} DWunion;
+
+#endif /* __ASM_LIBGCC_H */
--- /dev/null
+/*
+ * arch/score/lib/lshrdi3.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+long long __lshrdi3(long long u, word_type b)
+{
+ DWunion uu, w;
+ word_type bm;
+
+ if (b == 0)
+ return u;
+
+ uu.ll = u;
+ bm = 32 - b;
+
+ if (bm <= 0) {
+ w.s.high = 0;
+ w.s.low = (unsigned int) uu.s.high >> -bm;
+ } else {
+ const unsigned int carries = (unsigned int) uu.s.high << bm;
+
+ w.s.high = (unsigned int) uu.s.high >> b;
+ w.s.low = ((unsigned int) uu.s.low >> b) | carries;
+ }
+
+ return w.ll;
+}
+EXPORT_SYMBOL(__lshrdi3);
--- /dev/null
+/*
+ * arch/score/lib/string.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/linkage.h>
+#include <asm-generic/errno.h>
+
+ .text
+ .align 2
+ENTRY(__strncpy_from_user)
+ cmpi.c r6, 0
+ mv r9, r6
+ ble .L2
+0: lbu r7, [r5]
+ ldi r8, 0
+1: sb r7, [r4]
+2: lb r6, [r5]
+ cmp.c r6, r8
+ beq .L2
+
+.L5:
+ addi r8, 1
+ cmp.c r8, r9
+ beq .L7
+3: lbu r6, [r5, 1]+
+4: sb r6, [r4, 1]+
+5: lb r7, [r5]
+ cmpi.c r7, 0
+ bne .L5
+.L7:
+ mv r4, r8
+ br r3
+.L2:
+ ldi r8, 0
+ mv r4, r8
+ br r3
+ .section .fixup, "ax"
+99:
+ ldi r4, -EFAULT
+ br r3
+ .previous
+ .section __ex_table, "a"
+ .align 2
+ .word 0b ,99b
+ .word 1b ,99b
+ .word 2b ,99b
+ .word 3b ,99b
+ .word 4b ,99b
+ .word 5b ,99b
+ .previous
+
+ .align 2
+ENTRY(__strnlen_user)
+ cmpi.c r5, 0
+ ble .L11
+0: lb r6, [r4]
+ ldi r7, 0
+ cmp.c r6, r7
+ beq .L11
+.L15:
+ addi r7, 1
+ cmp.c r7, r5
+ beq .L23
+1: lb r6, [r4,1]+
+ cmpi.c r6, 0
+ bne .L15
+.L23:
+ addri r4, r7, 1
+ br r3
+
+.L11:
+ ldi r4, 1
+ br r3
+ .section .fixup, "ax"
+99:
+ ldi r4, 0
+ br r3
+
+ .section __ex_table,"a"
+ .align 2
+ .word 0b, 99b
+ .word 1b, 99b
+ .previous
+
+ .align 2
+ENTRY(__strlen_user)
+0: lb r6, [r4]
+ mv r7, r4
+ extsb r6, r6
+ cmpi.c r6, 0
+ mv r4, r6
+ beq .L27
+.L28:
+1: lb r6, [r7, 1]+
+ addi r6, 1
+ cmpi.c r6, 0
+ bne .L28
+.L27:
+ br r3
+ .section .fixup, "ax"
+ ldi r4, 0x0
+ br r3
+99:
+ ldi r4, 0
+ br r3
+ .previous
+ .section __ex_table, "a"
+ .align 2
+ .word 0b ,99b
+ .word 1b ,99b
+ .previous
+
+ .align 2
+ENTRY(__copy_tofrom_user)
+ cmpi.c r6, 0
+ mv r10,r6
+ beq .L32
+ ldi r9, 0
+.L34:
+ add r6, r5, r9
+0: lbu r8, [r6]
+ add r7, r4, r9
+1: sb r8, [r7]
+ addi r9, 1
+ cmp.c r9, r10
+ bne .L34
+.L32:
+ ldi r4, 0
+ br r3
+ .section .fixup, "ax"
+99:
+ sub r4, r10, r9
+ br r3
+ .previous
+ .section __ex_table, "a"
+ .align 2
+ .word 0b, 99b
+ .word 1b, 99b
+ .previous
+
+ .align 2
+ENTRY(__clear_user)
+ cmpi.c r5, 0
+ beq .L38
+ ldi r6, 0
+ mv r7, r6
+.L40:
+ addi r6, 1
+0: sb r7, [r4]+, 1
+ cmp.c r6, r5
+ bne .L40
+.L38:
+ ldi r4, 0
+ br r3
+
+ .section .fixup, "ax"
+ br r3
+ .previous
+ .section __ex_table, "a"
+ .align 2
+99:
+ .word 0b, 99b
+ .previous
--- /dev/null
+/*
+ * arch/score/lib/ucmpdi2.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+word_type __ucmpdi2(unsigned long long a, unsigned long long b)
+{
+ const DWunion au = {.ll = a};
+ const DWunion bu = {.ll = b};
+
+ if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
+ return 0;
+ else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
+ return 2;
+ if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
+ return 0;
+ else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
+ return 2;
+ return 1;
+}
+EXPORT_SYMBOL(__ucmpdi2);
--- /dev/null
+#
+# Makefile for the Linux/SCORE-specific parts of the memory manager.
+#
+
+obj-y += cache.o extable.o fault.o init.o \
+ tlb-miss.o tlb-score.o pgtable.o
--- /dev/null
+/*
+ * arch/score/mm/cache.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/init.h>
+#include <linux/linkage.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+
+#include <asm/mmu_context.h>
+
+/*
+Just flush entire Dcache!!
+You must ensure the page doesn't include instructions, because
+the function will not flush the Icache.
+The addr must be cache aligned.
+*/
+static void flush_data_cache_page(unsigned long addr)
+{
+ unsigned int i;
+ for (i = 0; i < (PAGE_SIZE / L1_CACHE_BYTES); i += L1_CACHE_BYTES) {
+ __asm__ __volatile__(
+ "cache 0x0e, [%0, 0]\n"
+ "cache 0x1a, [%0, 0]\n"
+ "nop\n"
+ : : "r" (addr));
+ addr += L1_CACHE_BYTES;
+ }
+}
+
+/* called by update_mmu_cache. */
+void __update_cache(struct vm_area_struct *vma, unsigned long address,
+ pte_t pte)
+{
+ struct page *page;
+ unsigned long pfn, addr;
+ int exec = (vma->vm_flags & VM_EXEC);
+
+ pfn = pte_pfn(pte);
+ if (unlikely(!pfn_valid(pfn)))
+ return;
+ page = pfn_to_page(pfn);
+ if (page_mapping(page) && test_bit(PG_arch_1, &page->flags)) {
+ addr = (unsigned long) page_address(page);
+ if (exec)
+ flush_data_cache_page(addr);
+ clear_bit(PG_arch_1, &page->flags);
+ }
+}
+
+static inline void setup_protection_map(void)
+{
+ protection_map[0] = PAGE_NONE;
+ protection_map[1] = PAGE_READONLY;
+ protection_map[2] = PAGE_COPY;
+ protection_map[3] = PAGE_COPY;
+ protection_map[4] = PAGE_READONLY;
+ protection_map[5] = PAGE_READONLY;
+ protection_map[6] = PAGE_COPY;
+ protection_map[7] = PAGE_COPY;
+ protection_map[8] = PAGE_NONE;
+ protection_map[9] = PAGE_READONLY;
+ protection_map[10] = PAGE_SHARED;
+ protection_map[11] = PAGE_SHARED;
+ protection_map[12] = PAGE_READONLY;
+ protection_map[13] = PAGE_READONLY;
+ protection_map[14] = PAGE_SHARED;
+ protection_map[15] = PAGE_SHARED;
+}
+
+void __devinit cpu_cache_init(void)
+{
+ setup_protection_map();
+}
+
+void flush_icache_all(void)
+{
+ __asm__ __volatile__(
+ "la r8, flush_icache_all\n"
+ "cache 0x10, [r8, 0]\n"
+ "nop\nnop\nnop\nnop\nnop\nnop\n"
+ : : : "r8");
+}
+
+void flush_dcache_all(void)
+{
+ __asm__ __volatile__(
+ "la r8, flush_dcache_all\n"
+ "cache 0x1f, [r8, 0]\n"
+ "nop\nnop\nnop\nnop\nnop\nnop\n"
+ "cache 0x1a, [r8, 0]\n"
+ "nop\nnop\nnop\nnop\nnop\nnop\n"
+ : : : "r8");
+}
+
+void flush_cache_all(void)
+{
+ __asm__ __volatile__(
+ "la r8, flush_cache_all\n"
+ "cache 0x10, [r8, 0]\n"
+ "nop\nnop\nnop\nnop\nnop\nnop\n"
+ "cache 0x1f, [r8, 0]\n"
+ "nop\nnop\nnop\nnop\nnop\nnop\n"
+ "cache 0x1a, [r8, 0]\n"
+ "nop\nnop\nnop\nnop\nnop\nnop\n"
+ : : : "r8");
+}
+
+void flush_cache_mm(struct mm_struct *mm)
+{
+ if (!(mm->context))
+ return;
+ flush_cache_all();
+}
+
+/*if we flush a range precisely , the processing may be very long.
+We must check each page in the range whether present. If the page is present,
+we can flush the range in the page. Be careful, the range may be cross two
+page, a page is present and another is not present.
+*/
+/*
+The interface is provided in hopes that the port can find
+a suitably efficient method for removing multiple page
+sized regions from the cache.
+*/
+void flush_cache_range(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end)
+{
+ struct mm_struct *mm = vma->vm_mm;
+ int exec = vma->vm_flags & VM_EXEC;
+ pgd_t *pgdp;
+ pud_t *pudp;
+ pmd_t *pmdp;
+ pte_t *ptep;
+
+ if (!(mm->context))
+ return;
+
+ pgdp = pgd_offset(mm, start);
+ pudp = pud_offset(pgdp, start);
+ pmdp = pmd_offset(pudp, start);
+ ptep = pte_offset(pmdp, start);
+
+ while (start <= end) {
+ unsigned long tmpend;
+ pgdp = pgd_offset(mm, start);
+ pudp = pud_offset(pgdp, start);
+ pmdp = pmd_offset(pudp, start);
+ ptep = pte_offset(pmdp, start);
+
+ if (!(pte_val(*ptep) & _PAGE_PRESENT)) {
+ start = (start + PAGE_SIZE) & ~(PAGE_SIZE - 1);
+ continue;
+ }
+ tmpend = (start | (PAGE_SIZE-1)) > end ?
+ end : (start | (PAGE_SIZE-1));
+
+ flush_dcache_range(start, tmpend);
+ if (exec)
+ flush_icache_range(start, tmpend);
+ start = (start + PAGE_SIZE) & ~(PAGE_SIZE - 1);
+ }
+}
+
+void flush_cache_page(struct vm_area_struct *vma,
+ unsigned long addr, unsigned long pfn)
+{
+ int exec = vma->vm_flags & VM_EXEC;
+ unsigned long kaddr = 0xa0000000 | (pfn << PAGE_SHIFT);
+
+ flush_dcache_range(kaddr, kaddr + PAGE_SIZE);
+
+ if (exec)
+ flush_icache_range(kaddr, kaddr + PAGE_SIZE);
+}
+
+void flush_cache_sigtramp(unsigned long addr)
+{
+ __asm__ __volatile__(
+ "cache 0x02, [%0, 0]\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+ "cache 0x02, [%0, 0x4]\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+
+ "cache 0x0d, [%0, 0]\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+ "cache 0x0d, [%0, 0x4]\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+
+ "cache 0x1a, [%0, 0]\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+ : : "r" (addr));
+}
+
+/*
+1. WB and invalid a cache line of Dcache
+2. Drain Write Buffer
+the range must be smaller than PAGE_SIZE
+*/
+void flush_dcache_range(unsigned long start, unsigned long end)
+{
+ int size, i;
+
+ start = start & ~(L1_CACHE_BYTES - 1);
+ end = end & ~(L1_CACHE_BYTES - 1);
+ size = end - start;
+ /* flush dcache to ram, and invalidate dcache lines. */
+ for (i = 0; i < size; i += L1_CACHE_BYTES) {
+ __asm__ __volatile__(
+ "cache 0x0e, [%0, 0]\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+ "cache 0x1a, [%0, 0]\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+ : : "r" (start));
+ start += L1_CACHE_BYTES;
+ }
+}
+
+void flush_icache_range(unsigned long start, unsigned long end)
+{
+ int size, i;
+ start = start & ~(L1_CACHE_BYTES - 1);
+ end = end & ~(L1_CACHE_BYTES - 1);
+
+ size = end - start;
+ /* invalidate icache lines. */
+ for (i = 0; i < size; i += L1_CACHE_BYTES) {
+ __asm__ __volatile__(
+ "cache 0x02, [%0, 0]\n"
+ "nop\nnop\nnop\nnop\nnop\n"
+ : : "r" (start));
+ start += L1_CACHE_BYTES;
+ }
+}
--- /dev/null
+/*
+ * arch/score/mm/extable.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+
+int fixup_exception(struct pt_regs *regs)
+{
+ const struct exception_table_entry *fixup;
+
+ fixup = search_exception_tables(regs->cp0_epc);
+ if (fixup) {
+ regs->cp0_epc = fixup->fixup;
+ return 1;
+ }
+ return 0;
+}
--- /dev/null
+/*
+ * arch/score/mm/fault.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/mman.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/ptrace.h>
+
+/*
+ * This routine handles page faults. It determines the address,
+ * and the problem, and then passes it off to one of the appropriate
+ * routines.
+ */
+asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
+ unsigned long address)
+{
+ struct vm_area_struct *vma = NULL;
+ struct task_struct *tsk = current;
+ struct mm_struct *mm = tsk->mm;
+ const int field = sizeof(unsigned long) * 2;
+ siginfo_t info;
+ int fault;
+
+ info.si_code = SEGV_MAPERR;
+
+ /*
+ * We fault-in kernel-space virtual memory on-demand. The
+ * 'reference' page table is init_mm.pgd.
+ *
+ * NOTE! We MUST NOT take any locks for this case. We may
+ * be in an interrupt or a critical region, and should
+ * only copy the information from the master page table,
+ * nothing more.
+ */
+ if (unlikely(address >= VMALLOC_START && address <= VMALLOC_END))
+ goto vmalloc_fault;
+#ifdef MODULE_START
+ if (unlikely(address >= MODULE_START && address < MODULE_END))
+ goto vmalloc_fault;
+#endif
+
+ /*
+ * If we're in an interrupt or have no user
+ * context, we must not take the fault..
+ */
+ if (in_atomic() || !mm)
+ goto bad_area_nosemaphore;
+
+ down_read(&mm->mmap_sem);
+ vma = find_vma(mm, address);
+ if (!vma)
+ goto bad_area;
+ if (vma->vm_start <= address)
+ goto good_area;
+ if (!(vma->vm_flags & VM_GROWSDOWN))
+ goto bad_area;
+ if (expand_stack(vma, address))
+ goto bad_area;
+ /*
+ * Ok, we have a good vm_area for this memory access, so
+ * we can handle it..
+ */
+good_area:
+ info.si_code = SEGV_ACCERR;
+
+ if (write) {
+ if (!(vma->vm_flags & VM_WRITE))
+ goto bad_area;
+ } else {
+ if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)))
+ goto bad_area;
+ }
+
+survive:
+ /*
+ * If for any reason at all we couldn't handle the fault,
+ * make sure we exit gracefully rather than endlessly redo
+ * the fault.
+ */
+ fault = handle_mm_fault(mm, vma, address, write);
+ if (unlikely(fault & VM_FAULT_ERROR)) {
+ if (fault & VM_FAULT_OOM)
+ goto out_of_memory;
+ else if (fault & VM_FAULT_SIGBUS)
+ goto do_sigbus;
+ BUG();
+ }
+ if (fault & VM_FAULT_MAJOR)
+ tsk->maj_flt++;
+ else
+ tsk->min_flt++;
+
+ up_read(&mm->mmap_sem);
+ return;
+
+ /*
+ * Something tried to access memory that isn't in our memory map..
+ * Fix it, but check if it's kernel or user first..
+ */
+bad_area:
+ up_read(&mm->mmap_sem);
+
+bad_area_nosemaphore:
+ /* User mode accesses just cause a SIGSEGV */
+ if (user_mode(regs)) {
+ tsk->thread.cp0_badvaddr = address;
+ tsk->thread.error_code = write;
+ info.si_signo = SIGSEGV;
+ info.si_errno = 0;
+ /* info.si_code has been set above */
+ info.si_addr = (void __user *) address;
+ force_sig_info(SIGSEGV, &info, tsk);
+ return;
+ }
+
+no_context:
+ /* Are we prepared to handle this kernel fault? */
+ if (fixup_exception(regs)) {
+ current->thread.cp0_baduaddr = address;
+ return;
+ }
+
+ /*
+ * Oops. The kernel tried to access some bad page. We'll have to
+ * terminate things with extreme prejudice.
+ */
+ bust_spinlocks(1);
+
+ printk(KERN_ALERT "CPU %d Unable to handle kernel paging request at "
+ "virtual address %0*lx, epc == %0*lx, ra == %0*lx\n",
+ 0, field, address, field, regs->cp0_epc,
+ field, regs->regs[3]);
+ die("Oops", regs);
+
+ /*
+ * We ran out of memory, or some other thing happened to us that made
+ * us unable to handle the page fault gracefully.
+ */
+out_of_memory:
+ up_read(&mm->mmap_sem);
+ if (is_global_init(tsk)) {
+ yield();
+ down_read(&mm->mmap_sem);
+ goto survive;
+ }
+ printk("VM: killing process %s\n", tsk->comm);
+ if (user_mode(regs))
+ do_group_exit(SIGKILL);
+ goto no_context;
+
+do_sigbus:
+ up_read(&mm->mmap_sem);
+ /* Kernel mode? Handle exceptions or die */
+ if (!user_mode(regs))
+ goto no_context;
+ else
+ /*
+ * Send a sigbus, regardless of whether we were in kernel
+ * or user mode.
+ */
+ tsk->thread.cp0_badvaddr = address;
+ info.si_signo = SIGBUS;
+ info.si_errno = 0;
+ info.si_code = BUS_ADRERR;
+ info.si_addr = (void __user *) address;
+ force_sig_info(SIGBUS, &info, tsk);
+ return;
+vmalloc_fault:
+ {
+ /*
+ * Synchronize this task's top level page-table
+ * with the 'reference' page table.
+ *
+ * Do _not_ use "tsk" here. We might be inside
+ * an interrupt in the middle of a task switch..
+ */
+ int offset = __pgd_offset(address);
+ pgd_t *pgd, *pgd_k;
+ pud_t *pud, *pud_k;
+ pmd_t *pmd, *pmd_k;
+ pte_t *pte_k;
+
+ pgd = (pgd_t *) pgd_current + offset;
+ pgd_k = init_mm.pgd + offset;
+
+ if (!pgd_present(*pgd_k))
+ goto no_context;
+ set_pgd(pgd, *pgd_k);
+
+ pud = pud_offset(pgd, address);
+ pud_k = pud_offset(pgd_k, address);
+ if (!pud_present(*pud_k))
+ goto no_context;
+
+ pmd = pmd_offset(pud, address);
+ pmd_k = pmd_offset(pud_k, address);
+ if (!pmd_present(*pmd_k))
+ goto no_context;
+ set_pmd(pmd, *pmd_k);
+
+ pte_k = pte_offset_kernel(pmd_k, address);
+ if (!pte_present(*pte_k))
+ goto no_context;
+ return;
+ }
+}
--- /dev/null
+/*
+ * arch/score/mm/init.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/errno.h>
+#include <linux/bootmem.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/mman.h>
+#include <linux/pagemap.h>
+#include <linux/proc_fs.h>
+#include <linux/sched.h>
+#include <linux/initrd.h>
+
+#include <asm/sections.h>
+#include <asm/tlb.h>
+
+DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
+
+unsigned long empty_zero_page;
+EXPORT_SYMBOL_GPL(empty_zero_page);
+
+static struct kcore_list kcore_mem, kcore_vmalloc;
+
+static unsigned long setup_zero_page(void)
+{
+ struct page *page;
+
+ empty_zero_page = __get_free_pages(GFP_KERNEL | __GFP_ZERO, 0);
+ if (!empty_zero_page)
+ panic("Oh boy, that early out of memory?");
+
+ page = virt_to_page((void *) empty_zero_page);
+ SetPageReserved(page);
+
+ return 1UL;
+}
+
+#ifndef CONFIG_NEED_MULTIPLE_NODES
+static int __init page_is_ram(unsigned long pagenr)
+{
+ if (pagenr >= min_low_pfn && pagenr < max_low_pfn)
+ return 1;
+ else
+ return 0;
+}
+
+void __init paging_init(void)
+{
+ unsigned long max_zone_pfns[MAX_NR_ZONES];
+ unsigned long lastpfn;
+
+ pagetable_init();
+ max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
+ lastpfn = max_low_pfn;
+ free_area_init_nodes(max_zone_pfns);
+}
+
+void __init mem_init(void)
+{
+ unsigned long codesize, reservedpages, datasize, initsize;
+ unsigned long tmp, ram = 0;
+
+ max_mapnr = max_low_pfn;
+ high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
+ totalram_pages += free_all_bootmem();
+ totalram_pages -= setup_zero_page(); /* Setup zeroed pages. */
+ reservedpages = 0;
+
+ for (tmp = 0; tmp < max_low_pfn; tmp++)
+ if (page_is_ram(tmp)) {
+ ram++;
+ if (PageReserved(pfn_to_page(tmp)))
+ reservedpages++;
+ }
+
+ num_physpages = ram;
+ codesize = (unsigned long) &_etext - (unsigned long) &_text;
+ datasize = (unsigned long) &_edata - (unsigned long) &_etext;
+ initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
+
+ kclist_add(&kcore_mem, __va(0), max_low_pfn << PAGE_SHIFT);
+ kclist_add(&kcore_vmalloc, (void *) VMALLOC_START,
+ VMALLOC_END - VMALLOC_START);
+
+ printk(KERN_INFO "Memory: %luk/%luk available (%ldk kernel code, "
+ "%ldk reserved, %ldk data, %ldk init, %ldk highmem)\n",
+ (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
+ ram << (PAGE_SHIFT-10), codesize >> 10,
+ reservedpages << (PAGE_SHIFT-10), datasize >> 10,
+ initsize >> 10,
+ (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10)));
+}
+#endif /* !CONFIG_NEED_MULTIPLE_NODES */
+
+static void free_init_pages(const char *what, unsigned long begin, unsigned long end)
+{
+ unsigned long pfn;
+
+ for (pfn = PFN_UP(begin); pfn < PFN_DOWN(end); pfn++) {
+ struct page *page = pfn_to_page(pfn);
+ void *addr = phys_to_virt(PFN_PHYS(pfn));
+
+ ClearPageReserved(page);
+ init_page_count(page);
+ memset(addr, POISON_FREE_INITMEM, PAGE_SIZE);
+ __free_page(page);
+ totalram_pages++;
+ }
+ printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
+}
+
+#ifdef CONFIG_BLK_DEV_INITRD
+void free_initrd_mem(unsigned long start, unsigned long end)
+{
+ free_init_pages("initrd memory",
+ virt_to_phys((void *) start),
+ virt_to_phys((void *) end));
+}
+#endif
+
+void __init_refok free_initmem(void)
+{
+ free_init_pages("unused kernel memory",
+ (unsigned long)__init_begin, (unsigned long)__init_end);
+}
+
+unsigned long pgd_current;
+
+#define __page_aligned(order) __attribute__((__aligned__(PAGE_SIZE<<order)))
+
+/*
+ * gcc 3.3 and older have trouble determining that PTRS_PER_PGD and PGD_ORDER
+ * are constants. So we use the variants from asm-offset.h until that gcc
+ * will officially be retired.
+ */
+pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned(PTE_ORDER);
--- /dev/null
+/*
+ * arch/score/mm/pgtable-32.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/bootmem.h>
+#include <linux/init.h>
+#include <linux/pfn.h>
+#include <linux/mm.h>
+
+void pgd_init(unsigned long page)
+{
+ unsigned long *p = (unsigned long *) page;
+ int i;
+
+ for (i = 0; i < USER_PTRS_PER_PGD; i += 8) {
+ p[i + 0] = (unsigned long) invalid_pte_table;
+ p[i + 1] = (unsigned long) invalid_pte_table;
+ p[i + 2] = (unsigned long) invalid_pte_table;
+ p[i + 3] = (unsigned long) invalid_pte_table;
+ p[i + 4] = (unsigned long) invalid_pte_table;
+ p[i + 5] = (unsigned long) invalid_pte_table;
+ p[i + 6] = (unsigned long) invalid_pte_table;
+ p[i + 7] = (unsigned long) invalid_pte_table;
+ }
+}
+
+void __init pagetable_init(void)
+{
+ unsigned long vaddr;
+ pgd_t *pgd_base;
+
+ /* Initialize the entire pgd. */
+ pgd_init((unsigned long) swapper_pg_dir);
+ pgd_init((unsigned long) swapper_pg_dir
+ + sizeof(pgd_t) * USER_PTRS_PER_PGD);
+
+ pgd_base = swapper_pg_dir;
+ vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
+}
--- /dev/null
+/*
+ * arch/score/mm/tlbex.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <asm/asmmacro.h>
+#include <asm/pgtable-bits.h>
+#include <asm/scoreregs.h>
+
+/*
+* After this macro runs, the pte faulted on is
+* in register PTE, a ptr into the table in which
+* the pte belongs is in PTR.
+*/
+ .macro load_pte, pte, ptr
+ la \ptr, pgd_current
+ lw \ptr, [\ptr, 0]
+ mfcr \pte, cr6
+ srli \pte, \pte, 22
+ slli \pte, \pte, 2
+ add \ptr, \ptr, \pte
+ lw \ptr, [\ptr, 0]
+ mfcr \pte, cr6
+ srli \pte, \pte, 10
+ andi \pte, 0xffc
+ add \ptr, \ptr, \pte
+ lw \pte, [\ptr, 0]
+ .endm
+
+ .macro pte_reload, ptr
+ lw \ptr, [\ptr, 0]
+ mtcr \ptr, cr12
+ nop
+ nop
+ nop
+ nop
+ nop
+ .endm
+
+ .macro do_fault, write
+ SAVE_ALL
+ mfcr r6, cr6
+ mv r4, r0
+ ldi r5, \write
+ la r8, do_page_fault
+ brl r8
+ j ret_from_exception
+ .endm
+
+ .macro pte_writable, pte, ptr, label
+ andi \pte, 0x280
+ cmpi.c \pte, 0x280
+ bne \label
+ lw \pte, [\ptr, 0] /*reload PTE*/
+ .endm
+
+/*
+ * Make PTE writable, update software status bits as well,
+ * then store at PTR.
+ */
+ .macro pte_makewrite, pte, ptr
+ ori \pte, 0x426
+ sw \pte, [\ptr, 0]
+ .endm
+
+ .text
+ENTRY(score7_FTLB_refill_Handler)
+ la r31, pgd_current /* get pgd pointer */
+ lw r31, [r31, 0] /* get the address of PGD */
+ mfcr r30, cr6
+ srli r30, r30, 22 /* PGDIR_SHIFT = 22*/
+ slli r30, r30, 2
+ add r31, r31, r30
+ lw r31, [r31, 0] /* get the address of the start address of PTE table */
+
+ mfcr r30, cr9
+ andi r30, 0xfff /* equivalent to get PET index and right shift 2 bits */
+ add r31, r31, r30
+ lw r30, [r31, 0] /* load pte entry */
+ mtcr r30, cr12
+ nop
+ nop
+ nop
+ nop
+ nop
+ mtrtlb
+ nop
+ nop
+ nop
+ nop
+ nop
+ rte /* 6 cycles to make sure tlb entry works */
+
+ENTRY(score7_KSEG_refill_Handler)
+ la r31, pgd_current /* get pgd pointer */
+ lw r31, [r31, 0] /* get the address of PGD */
+ mfcr r30, cr6
+ srli r30, r30, 22 /* PGDIR_SHIFT = 22 */
+ slli r30, r30, 2
+ add r31, r31, r30
+ lw r31, [r31, 0] /* get the address of the start address of PTE table */
+
+ mfcr r30, cr6 /* get Bad VPN */
+ srli r30, r30, 10
+ andi r30, 0xffc /* PTE VPN mask (bit 11~2) */
+
+ add r31, r31, r30
+ lw r30, [r31, 0] /* load pte entry */
+ mtcr r30, cr12
+ nop
+ nop
+ nop
+ nop
+ nop
+ mtrtlb
+ nop
+ nop
+ nop
+ nop
+ nop
+ rte /* 6 cycles to make sure tlb entry works */
+
+nopage_tlbl:
+ do_fault 0 /* Read */
+
+ENTRY(handle_tlb_refill)
+ load_pte r30, r31
+ pte_writable r30, r31, handle_tlb_refill_nopage
+ pte_makewrite r30, r31 /* Access|Modify|Dirty|Valid */
+ pte_reload r31
+ mtrtlb
+ nop
+ nop
+ nop
+ nop
+ nop
+ rte
+handle_tlb_refill_nopage:
+ do_fault 0 /* Read */
+
+ENTRY(handle_tlb_invaild)
+ load_pte r30, r31
+ stlb /* find faulting entry */
+ pte_writable r30, r31, handle_tlb_invaild_nopage
+ pte_makewrite r30, r31 /* Access|Modify|Dirty|Valid */
+ pte_reload r31
+ mtptlb
+ nop
+ nop
+ nop
+ nop
+ nop
+ rte
+handle_tlb_invaild_nopage:
+ do_fault 0 /* Read */
+
+ENTRY(handle_mod)
+ load_pte r30, r31
+ stlb /* find faulting entry */
+ andi r30, _PAGE_WRITE /* Writable? */
+ cmpz.c r30
+ beq nowrite_mod
+ lw r30, [r31, 0] /* reload into r30 */
+
+ /* Present and writable bits set, set accessed and dirty bits. */
+ pte_makewrite r30, r31
+
+ /* Now reload the entry into the tlb. */
+ pte_reload r31
+ mtptlb
+ nop
+ nop
+ nop
+ nop
+ nop
+ rte
+
+nowrite_mod:
+ do_fault 1 /* Write */
--- /dev/null
+/*
+ * arch/score/mm/tlb-score.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/highmem.h>
+#include <linux/module.h>
+
+#include <asm/irq.h>
+#include <asm/mmu_context.h>
+#include <asm/tlb.h>
+
+#define TLBSIZE 32
+
+unsigned long asid_cache = ASID_FIRST_VERSION;
+EXPORT_SYMBOL(asid_cache);
+
+void local_flush_tlb_all(void)
+{
+ unsigned long flags;
+ unsigned long old_ASID;
+ int entry;
+
+ local_irq_save(flags);
+ old_ASID = pevn_get() & ASID_MASK;
+ pectx_set(0); /* invalid */
+ entry = tlblock_get(); /* skip locked entries*/
+
+ for (; entry < TLBSIZE; entry++) {
+ tlbpt_set(entry);
+ pevn_set(KSEG1);
+ barrier();
+ tlb_write_indexed();
+ }
+ pevn_set(old_ASID);
+ local_irq_restore(flags);
+}
+
+/*
+ * If mm is currently active_mm, we can't really drop it. Instead,
+ * we will get a new one for it.
+ */
+static inline void
+drop_mmu_context(struct mm_struct *mm)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ get_new_mmu_context(mm);
+ pevn_set(mm->context & ASID_MASK);
+ local_irq_restore(flags);
+}
+
+void local_flush_tlb_mm(struct mm_struct *mm)
+{
+ if (mm->context != 0)
+ drop_mmu_context(mm);
+}
+
+void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
+ unsigned long end)
+{
+ struct mm_struct *mm = vma->vm_mm;
+ unsigned long vma_mm_context = mm->context;
+ if (mm->context != 0) {
+ unsigned long flags;
+ int size;
+
+ local_irq_save(flags);
+ size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+ if (size <= TLBSIZE) {
+ int oldpid = pevn_get() & ASID_MASK;
+ int newpid = vma_mm_context & ASID_MASK;
+
+ start &= PAGE_MASK;
+ end += (PAGE_SIZE - 1);
+ end &= PAGE_MASK;
+ while (start < end) {
+ int idx;
+
+ pevn_set(start | newpid);
+ start += PAGE_SIZE;
+ barrier();
+ tlb_probe();
+ idx = tlbpt_get();
+ pectx_set(0);
+ pevn_set(KSEG1);
+ if (idx < 0)
+ continue;
+ tlb_write_indexed();
+ }
+ pevn_set(oldpid);
+ } else {
+ /* Bigger than TLBSIZE, get new ASID directly */
+ get_new_mmu_context(mm);
+ if (mm == current->active_mm)
+ pevn_set(vma_mm_context & ASID_MASK);
+ }
+ local_irq_restore(flags);
+ }
+}
+
+void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+ unsigned long flags;
+ int size;
+
+ local_irq_save(flags);
+ size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+ if (size <= TLBSIZE) {
+ int pid = pevn_get();
+
+ start &= PAGE_MASK;
+ end += PAGE_SIZE - 1;
+ end &= PAGE_MASK;
+
+ while (start < end) {
+ long idx;
+
+ pevn_set(start);
+ start += PAGE_SIZE;
+ tlb_probe();
+ idx = tlbpt_get();
+ if (idx < 0)
+ continue;
+ pectx_set(0);
+ pevn_set(KSEG1);
+ barrier();
+ tlb_write_indexed();
+ }
+ pevn_set(pid);
+ } else {
+ local_flush_tlb_all();
+ }
+
+ local_irq_restore(flags);
+}
+
+void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
+{
+ if (!vma || vma->vm_mm->context != 0) {
+ unsigned long flags;
+ int oldpid, newpid, idx;
+ unsigned long vma_ASID = vma->vm_mm->context;
+
+ newpid = vma_ASID & ASID_MASK;
+ page &= PAGE_MASK;
+ local_irq_save(flags);
+ oldpid = pevn_get() & ASID_MASK;
+ pevn_set(page | newpid);
+ barrier();
+ tlb_probe();
+ idx = tlbpt_get();
+ pectx_set(0);
+ pevn_set(KSEG1);
+ if (idx < 0) /* p_bit(31) - 1: miss, 0: hit*/
+ goto finish;
+ barrier();
+ tlb_write_indexed();
+finish:
+ pevn_set(oldpid);
+ local_irq_restore(flags);
+ }
+}
+
+/*
+ * This one is only used for pages with the global bit set so we don't care
+ * much about the ASID.
+ */
+void local_flush_tlb_one(unsigned long page)
+{
+ unsigned long flags;
+ int oldpid, idx;
+
+ local_irq_save(flags);
+ oldpid = pevn_get();
+ page &= (PAGE_MASK << 1);
+ pevn_set(page);
+ barrier();
+ tlb_probe();
+ idx = tlbpt_get();
+ pectx_set(0);
+ if (idx >= 0) {
+ /* Make sure all entries differ. */
+ pevn_set(KSEG1);
+ barrier();
+ tlb_write_indexed();
+ }
+ pevn_set(oldpid);
+ local_irq_restore(flags);
+}
+
+void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
+{
+ unsigned long flags;
+ int idx, pid;
+
+ /*
+ * Handle debugger faulting in for debugee.
+ */
+ if (current->active_mm != vma->vm_mm)
+ return;
+
+ pid = pevn_get() & ASID_MASK;
+
+ local_irq_save(flags);
+ address &= PAGE_MASK;
+ pevn_set(address | pid);
+ barrier();
+ tlb_probe();
+ idx = tlbpt_get();
+ pectx_set(pte_val(pte));
+ pevn_set(address | pid);
+ if (idx < 0)
+ tlb_write_random();
+ else
+ tlb_write_indexed();
+
+ pevn_set(pid);
+ local_irq_restore(flags);
+}
+
+void __cpuinit tlb_init(void)
+{
+ tlblock_set(0);
+ local_flush_tlb_all();
+ memcpy((void *)(EXCEPTION_VECTOR_BASE_ADDR + 0x100),
+ &score7_FTLB_refill_Handler, 0xFC);
+ flush_icache_range(EXCEPTION_VECTOR_BASE_ADDR + 0x100,
+ EXCEPTION_VECTOR_BASE_ADDR + 0x1FC);
+}
projects / cascardo / linux.git / commitdiff