MIPS: SB1: Remove support for Pass 1 parts.

Pass 1 parts had a number of significant erratas and were only available
in small numbers and under NDA.  Full support also required the use of a
special toolchain that kept branches properly aligned.  These workarounds
were never upstreamed and the only toolchain known to have them is
Montavista's GCC 3.0-based toolchain which completly obsoleted if not
useless these days.

So now that automated testing has tripped over the user of the
-msb1-pass1-workarounds option, rather than fixing it remove support for
pass 1 parts.

Probably nobody will notice.  I seem to own the last know pass 1 board
and I haven't noticed another one in the wild in the past decade, at
least.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 66dc359..cee5f93 100644 (file)
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2263,11 +2263,6 @@ config MIPS_CM
 config MIPS_CPC
        bool
 
-config SB1_PASS_1_WORKAROUNDS
-       bool
-       depends on CPU_SB1_PASS_1
-       default y
-
 config SB1_PASS_2_WORKAROUNDS
        bool
        depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)

diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index ae2dd59..252e347 100644 (file)
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -181,13 +181,6 @@ cflags-$(CONFIG_CPU_R4000_WORKAROUNDS)     += $(call cc-option,-mfix-r4000,)
 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
 
-ifdef CONFIG_CPU_SB1
-ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
-KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds
-KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds
-endif
-endif
-
 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or

diff --git a/arch/mips/include/asm/mach-sibyte/war.h b/arch/mips/include/asm/mach-sibyte/war.h
index 0a227d4..520f8fc 100644 (file)
--- a/arch/mips/include/asm/mach-sibyte/war.h
+++ b/arch/mips/include/asm/mach-sibyte/war.h
@@ -13,8 +13,7 @@
 #define R4600_V2_HIT_CACHEOP_WAR       0
 #define R5432_CP0_INTERRUPT_WAR                0
 
-#if defined(CONFIG_SB1_PASS_1_WORKAROUNDS) || \
-    defined(CONFIG_SB1_PASS_2_WORKAROUNDS)
+#if defined(CONFIG_SB1_PASS_2_WORKAROUNDS)
 
 #ifndef __ASSEMBLY__
 extern int sb1250_m3_workaround_needed(void);

diff --git a/arch/mips/sibyte/Kconfig b/arch/mips/sibyte/Kconfig
index a8bb972..cb9a095 100644 (file)
--- a/arch/mips/sibyte/Kconfig
+++ b/arch/mips/sibyte/Kconfig
@@ -81,11 +81,6 @@ choice
        prompt "SiByte SOC Stepping"
        depends on SIBYTE_SB1xxx_SOC
 
-config CPU_SB1_PASS_1
-       bool "1250 Pass1"
-       depends on SIBYTE_SB1250
-       select CPU_HAS_PREFETCH
-
 config CPU_SB1_PASS_2_1250
        bool "1250 An"
        depends on SIBYTE_SB1250

diff --git a/arch/mips/sibyte/common/bus_watcher.c b/arch/mips/sibyte/common/bus_watcher.c
index 5581844..41a1d22 100644 (file)
--- a/arch/mips/sibyte/common/bus_watcher.c
+++ b/arch/mips/sibyte/common/bus_watcher.c
@@ -81,10 +81,7 @@ void check_bus_watcher(void)
 {
        u32 status, l2_err, memio_err;
 
-#ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
-       /* Destructive read, clears register and interrupt */
-       status = csr_in32(IOADDR(A_SCD_BUS_ERR_STATUS));
-#elif defined(CONFIG_SIBYTE_BCM112X) || defined(CONFIG_SIBYTE_SB1250)
+#if defined(CONFIG_SIBYTE_BCM112X) || defined(CONFIG_SIBYTE_SB1250)
        /* Use non-destructive register */
        status = csr_in32(IOADDR(A_SCD_BUS_ERR_STATUS_DEBUG));
 #elif defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)

diff --git a/arch/mips/sibyte/sb1250/setup.c b/arch/mips/sibyte/sb1250/setup.c
index 3c02b2a..9d3c24e 100644 (file)
--- a/arch/mips/sibyte/sb1250/setup.c
+++ b/arch/mips/sibyte/sb1250/setup.c
@@ -202,12 +202,10 @@ void __init sb1250_setup(void)
 
        switch (war_pass) {
        case K_SYS_REVISION_BCM1250_PASS1:
-#ifndef CONFIG_SB1_PASS_1_WORKAROUNDS
                printk("@@@@ This is a BCM1250 A0-A2 (Pass 1) board, "
                            "and the kernel doesn't have the proper "
                            "workarounds compiled in. @@@@\n");
                bad_config = 1;
-#endif
                break;
        case K_SYS_REVISION_BCM1250_PASS2:
                /* Pass 2 - easiest as default for now - so many numbers */

diff --git a/drivers/net/ethernet/broadcom/sb1250-mac.c b/drivers/net/ethernet/broadcom/sb1250-mac.c
index ac27e24..f557a2a 100644 (file)
--- a/drivers/net/ethernet/broadcom/sb1250-mac.c
+++ b/drivers/net/ethernet/broadcom/sb1250-mac.c
@@ -1508,16 +1508,7 @@ static void sbmac_channel_start(struct sbmac_softc *s)
        __raw_writeq(reg, port);
        port = s->sbm_base + R_MAC_ETHERNET_ADDR;
 
-#ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
-       /*
-        * Pass1 SOCs do not receive packets addressed to the
-        * destination address in the R_MAC_ETHERNET_ADDR register.
-        * Set the value to zero.
-        */
-       __raw_writeq(0, port);
-#else
        __raw_writeq(reg, port);
-#endif
 
        /*
         * Set the receive filter for no packets, and write values