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| author |   Borislav Petkov <bp@amd64.org> | 2011-08-05 20:04:09 +0200 |
|---|---|---|
| committer |   H. Peter Anvin <hpa@linux.intel.com> | 2011-08-05 12:32:33 -0700 |
| commit | 8fa8b035085e7320c15875c1f6b03b290ca2dd66 (patch) | |
| tree | 67015568807e0caf987b054cc98c870a2b928f9f /arch/x86/kernel | |
| parent | x86: Add a BSP cpu_dev helper (diff) | |
| download | linux-dev-8fa8b035085e7320c15875c1f6b03b290ca2dd66.tar.xz linux-dev-8fa8b035085e7320c15875c1f6b03b290ca2dd66.zip | |
x86, amd: Move BSP code to cpu_dev helper
Move code which is run once on the BSP during boot into the cpu_dev
helper.
[ hpa: removed bogus cpu_has -> static_cpu_has conversion ]
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Link: http://lkml.kernel.org/r/20110805180409.GC26217@aftab
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/cpu/amd.c | 59 |
1 files changed, 29 insertions, 30 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index b0234bcbd32a..b6e3e87d25fb 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -410,6 +410,34 @@ static void __cpuinit early_init_amd_mc(struct cpuinfo_x86 *c) #endif } +static void __cpuinit bsp_init_amd(struct cpuinfo_x86 *c) +{ + if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) { + + if (c->x86 > 0x10 || + (c->x86 == 0x10 && c->x86_model >= 0x2)) { + u64 val; + + rdmsrl(MSR_K7_HWCR, val); + if (!(val & BIT(24))) + printk(KERN_WARNING FW_BUG "TSC doesn't count " + "with P0 frequency!\n"); + } + } + + if (c->x86 == 0x15) { + unsigned long upperbit; + u32 cpuid, assoc; + + cpuid = cpuid_edx(0x80000005); + assoc = cpuid >> 16 & 0xff; + upperbit = ((cpuid >> 24) << 10) / assoc; + + va_align.mask = (upperbit - 1) & PAGE_MASK; + va_align.flags = ALIGN_VA_32 | ALIGN_VA_64; + } +} + static void __cpuinit early_init_amd(struct cpuinfo_x86 *c) { early_init_amd_mc(c); @@ -441,36 +469,6 @@ static void __cpuinit early_init_amd(struct cpuinfo_x86 *c) set_cpu_cap(c, X86_FEATURE_EXTD_APICID); } #endif - - /* We need to do the following only once */ - if (c != &boot_cpu_data) - return; - - if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) { - - if (c->x86 > 0x10 || - (c->x86 == 0x10 && c->x86_model >= 0x2)) { - u64 val; - - rdmsrl(MSR_K7_HWCR, val); - if (!(val & BIT(24))) - printk(KERN_WARNING FW_BUG "TSC doesn't count " - "with P0 frequency!\n"); - } - } - - if (c->x86 == 0x15) { - unsigned long upperbit; - u32 cpuid, assoc; - - cpuid = cpuid_edx(0x80000005); - assoc = cpuid >> 16 & 0xff; - upperbit = ((cpuid >> 24) << 10) / assoc; - - va_align.mask = (upperbit - 1) & PAGE_MASK; - va_align.flags = ALIGN_VA_32 | ALIGN_VA_64; - - } } static void __cpuinit init_amd(struct cpuinfo_x86 *c) @@ -692,6 +690,7 @@ static const struct cpu_dev __cpuinitconst amd_cpu_dev = { .c_size_cache = amd_size_cache, #endif .c_early_init = early_init_amd, + .c_bsp_init = bsp_init_amd, .c_init = init_amd, .c_x86_vendor = X86_VENDOR_AMD, }; |