diff options
Diffstat (limited to 'arch/powerpc/lib')
| -rw-r--r-- | arch/powerpc/lib/checksum_64.S | 12 | ||||
| -rw-r--r-- | arch/powerpc/lib/feature-fixups.c | 32 |
2 files changed, 36 insertions, 8 deletions
diff --git a/arch/powerpc/lib/checksum_64.S b/arch/powerpc/lib/checksum_64.S index 8e6e51016cc5..fdec6e613e95 100644 --- a/arch/powerpc/lib/checksum_64.S +++ b/arch/powerpc/lib/checksum_64.S @@ -74,9 +74,9 @@ _GLOBAL(__csum_partial) ld r11,24(r3) /* - * On POWER6 and POWER7 back to back addes take 2 cycles because of - * the XER dependency. This means the fastest this loop can go is - * 16 cycles per iteration. The scheduling of the loop below has + * On POWER6 and POWER7 back to back adde instructions take 2 cycles + * because of the XER dependency. This means the fastest this loop can + * go is 16 cycles per iteration. The scheduling of the loop below has * been shown to hit this on both POWER6 and POWER7. */ .align 5 @@ -275,9 +275,9 @@ source; ld r10,16(r3) source; ld r11,24(r3) /* - * On POWER6 and POWER7 back to back addes take 2 cycles because of - * the XER dependency. This means the fastest this loop can go is - * 16 cycles per iteration. The scheduling of the loop below has + * On POWER6 and POWER7 back to back adde instructions take 2 cycles + * because of the XER dependency. This means the fastest this loop can + * go is 16 cycles per iteration. The scheduling of the loop below has * been shown to hit this on both POWER6 and POWER7. */ .align 5 diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c index 7ce3870d7ddd..defb2998b818 100644 --- a/arch/powerpc/lib/feature-fixups.c +++ b/arch/powerpc/lib/feature-fixups.c @@ -20,7 +20,8 @@ #include <asm/code-patching.h> #include <asm/page.h> #include <asm/sections.h> - +#include <asm/setup.h> +#include <asm/firmware.h> struct fixup_entry { unsigned long mask; @@ -130,7 +131,7 @@ void do_lwsync_fixups(unsigned long value, void *fixup_start, void *fixup_end) } } -void do_final_fixups(void) +static void do_final_fixups(void) { #if defined(CONFIG_PPC64) && defined(CONFIG_RELOCATABLE) int *src, *dest; @@ -151,6 +152,33 @@ void do_final_fixups(void) #endif } +void apply_feature_fixups(void) +{ + struct cpu_spec *spec = *PTRRELOC(&cur_cpu_spec); + + /* + * Apply the CPU-specific and firmware specific fixups to kernel text + * (nop out sections not relevant to this CPU or this firmware). + */ + 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)); + +#ifdef CONFIG_PPC64 + do_feature_fixups(powerpc_firmware_features, + &__start___fw_ftr_fixup, &__stop___fw_ftr_fixup); +#endif + do_final_fixups(); +} + #ifdef CONFIG_FTR_FIXUP_SELFTEST #define check(x) \ |