#include <asm/time.h>
#include <asm/serial.h>
#include <asm/udbg.h>
-#include <asm/mmu_context.h>
-#include <asm/epapr_hcalls.h>
#include <asm/code-patching.h>
+#include <asm/cpu_has_feature.h>
#define DBG(fmt...)
int ucache_bsize;
/*
- * We're called here very early in the boot. We determine the machine
- * type and call the appropriate low-level setup functions.
- * -- Cort <cort@fsmlabs.com>
+ * We're called here very early in the boot.
*
* Note that the kernel may be running at an address which is different
* from the address that it was linked at, so we must use RELOC/PTRRELOC
notrace unsigned long __init early_init(unsigned long dt_ptr)
{
unsigned long offset = reloc_offset();
- struct cpu_spec *spec;
/* First zero the BSS -- use memset_io, some platforms don't have
* caches on yet */
* Identify the CPU type and fix up code sections
* that depend on which cpu we have.
*/
- spec = identify_cpu(offset, mfspr(SPRN_PVR));
+ identify_cpu(offset, mfspr(SPRN_PVR));
- do_feature_fixups(spec->cpu_features,
- PTRRELOC(&__start___ftr_fixup),
- PTRRELOC(&__stop___ftr_fixup));
-
- do_feature_fixups(spec->mmu_features,
- PTRRELOC(&__start___mmu_ftr_fixup),
- PTRRELOC(&__stop___mmu_ftr_fixup));
-
- do_lwsync_fixups(spec->cpu_features,
- PTRRELOC(&__start___lwsync_fixup),
- PTRRELOC(&__stop___lwsync_fixup));
-
- do_final_fixups();
+ apply_feature_fixups();
return KERNELBASE + offset;
}
/*
- * Find out what kind of machine we're on and save any data we need
- * from the early boot process (devtree is copied on pmac by prom_init()).
- * This is called very early on the boot process, after a minimal
- * MMU environment has been set up but before MMU_init is called.
+ * This is run before start_kernel(), the kernel has been relocated
+ * and we are running with enough of the MMU enabled to have our
+ * proper kernel virtual addresses
+ *
+ * We do the initial parsing of the flat device-tree and prepares
+ * for the MMU to be fully initialized.
*/
extern unsigned int memset_nocache_branch; /* Insn to be replaced by NOP */
/* Do some early initialization based on the flat device tree */
early_init_devtree(__va(dt_ptr));
- epapr_paravirt_early_init();
-
early_init_mmu();
- probe_machine();
-
setup_kdump_trampoline();
-
-#ifdef CONFIG_6xx
- if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
- cpu_has_feature(CPU_FTR_CAN_NAP))
- ppc_md.power_save = ppc6xx_idle;
-#endif
-
-#ifdef CONFIG_E500
- if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
- cpu_has_feature(CPU_FTR_CAN_NAP))
- ppc_md.power_save = e500_idle;
-#endif
- if (ppc_md.progress)
- ppc_md.progress("id mach(): done", 0x200);
}
/* Checks "l2cr=xxxx" command-line option */
arch_initcall(ppc_init);
-static void __init irqstack_early_init(void)
+void __init irqstack_early_init(void)
{
unsigned int i;
}
#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
-static void __init exc_lvl_early_init(void)
+void __init exc_lvl_early_init(void)
{
unsigned int i, hw_cpu;
#endif
}
}
-#else
-#define exc_lvl_early_init()
#endif
-/* Warning, IO base is not yet inited */
-void __init setup_arch(char **cmdline_p)
+void __init setup_power_save(void)
{
- *cmdline_p = boot_command_line;
-
- /* so udelay does something sensible, assume <= 1000 bogomips */
- loops_per_jiffy = 500000000 / HZ;
-
- unflatten_device_tree();
- check_for_initrd();
-
- if (ppc_md.init_early)
- ppc_md.init_early();
-
- find_legacy_serial_ports();
-
- smp_setup_cpu_maps();
-
- /* Register early console */
- register_early_udbg_console();
+#ifdef CONFIG_6xx
+ if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
+ cpu_has_feature(CPU_FTR_CAN_NAP))
+ ppc_md.power_save = ppc6xx_idle;
+#endif
- xmon_setup();
+#ifdef CONFIG_E500
+ if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
+ cpu_has_feature(CPU_FTR_CAN_NAP))
+ ppc_md.power_save = e500_idle;
+#endif
+}
+__init void initialize_cache_info(void)
+{
/*
* Set cache line size based on type of cpu as a default.
* Systems with OF can look in the properties on the cpu node(s)
ucache_bsize = 0;
if (cpu_has_feature(CPU_FTR_UNIFIED_ID_CACHE))
ucache_bsize = icache_bsize = dcache_bsize;
-
- if (ppc_md.panic)
- setup_panic();
-
- init_mm.start_code = (unsigned long)_stext;
- init_mm.end_code = (unsigned long) _etext;
- init_mm.end_data = (unsigned long) _edata;
- init_mm.brk = klimit;
-
- exc_lvl_early_init();
-
- irqstack_early_init();
-
- initmem_init();
- if ( ppc_md.progress ) ppc_md.progress("setup_arch: initmem", 0x3eab);
-
-#ifdef CONFIG_DUMMY_CONSOLE
- conswitchp = &dummy_con;
-#endif
-
- if (ppc_md.setup_arch)
- ppc_md.setup_arch();
- if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
-
- paging_init();
-
- /* Initialize the MMU context management stuff */
- mmu_context_init();
}
projects / cascardo / linux.git / blobdiff