diff options
author | Dave Jones <davej@redhat.com> | 2008-05-22 18:57:25 -0400 |
---|---|---|
committer | H. Peter Anvin <hpa@zytor.com> | 2008-05-30 15:46:30 -0700 |
commit | 30a713180b3d08fdec5ca572e5a1cd35253c5d8e (patch) | |
tree | 4d286cbf8dbbaaca40241aa8dffe203cb2acd75d /arch/x86/kernel/cpu/centaur_64.c | |
parent | 7e2191127eb414d7d5a11df6552ab6e3845d17a1 (diff) |
x86: Move the 64-bit Centaur specific parts out of setup_64.c
Create a separate centaur_64.c file in the cpu/ dir for
the useful parts to live in.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel/cpu/centaur_64.c')
-rw-r--r-- | arch/x86/kernel/cpu/centaur_64.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/centaur_64.c b/arch/x86/kernel/cpu/centaur_64.c new file mode 100644 index 00000000000..bac96d187d0 --- /dev/null +++ b/arch/x86/kernel/cpu/centaur_64.c @@ -0,0 +1,31 @@ +#include <linux/init.h> +#include <linux/smp.h> + +#include <asm/cpufeature.h> +#include <asm/processor.h> + +void __cpuinit early_init_centaur(struct cpuinfo_x86 *c) +{ + if (c->x86 == 0x6 && c->x86_model >= 0xf) + set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC); +} + +void __cpuinit init_centaur(struct cpuinfo_x86 *c) +{ + /* Cache sizes */ + unsigned n; + + n = c->extended_cpuid_level; + if (n >= 0x80000008) { + unsigned eax = cpuid_eax(0x80000008); + c->x86_virt_bits = (eax >> 8) & 0xff; + c->x86_phys_bits = eax & 0xff; + } + + if (c->x86 == 0x6 && c->x86_model >= 0xf) { + c->x86_cache_alignment = c->x86_clflush_size * 2; + set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC); + set_cpu_cap(c, X86_FEATURE_REP_GOOD); + } + set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC); +} |