diff options
Diffstat (limited to 'arch/x86/boot/cpucheck.c')
| -rw-r--r-- | arch/x86/boot/cpucheck.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/arch/x86/boot/cpucheck.c b/arch/x86/boot/cpucheck.c index e1478d32de1a..2e1bb936cba2 100644 --- a/arch/x86/boot/cpucheck.c +++ b/arch/x86/boot/cpucheck.c @@ -22,10 +22,12 @@ # include "boot.h" #endif #include <linux/types.h> +#include <asm/cpufeaturemasks.h> #include <asm/intel-family.h> #include <asm/processor-flags.h> -#include <asm/required-features.h> #include <asm/msr-index.h> +#include <asm/shared/msr.h> + #include "string.h" static u32 err_flags[NCAPINTS]; @@ -130,12 +132,11 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr) /* If this is an AMD and we're only missing SSE+SSE2, try to turn them on */ - u32 ecx = MSR_K7_HWCR; - u32 eax, edx; + struct msr m; - asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); - eax &= ~(1 << 15); - asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); + raw_rdmsr(MSR_K7_HWCR, &m); + m.l &= ~(1 << 15); + raw_wrmsr(MSR_K7_HWCR, &m); get_cpuflags(); /* Make sure it really did something */ err = check_cpuflags(); @@ -145,28 +146,28 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr) /* If this is a VIA C3, we might have to enable CX8 explicitly */ - u32 ecx = MSR_VIA_FCR; - u32 eax, edx; + struct msr m; - asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); - eax |= (1<<1)|(1<<7); - asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); + raw_rdmsr(MSR_VIA_FCR, &m); + m.l |= (1 << 1) | (1 << 7); + raw_wrmsr(MSR_VIA_FCR, &m); set_bit(X86_FEATURE_CX8, cpu.flags); err = check_cpuflags(); } else if (err == 0x01 && is_transmeta()) { /* Transmeta might have masked feature bits in word 0 */ - u32 ecx = 0x80860004; - u32 eax, edx; + struct msr m, m_tmp; u32 level = 1; - asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); - asm("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx)); + raw_rdmsr(0x80860004, &m); + m_tmp = m; + m_tmp.l = ~0; + raw_wrmsr(0x80860004, &m_tmp); asm("cpuid" : "+a" (level), "=d" (cpu.flags[0]) : : "ecx", "ebx"); - asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); + raw_wrmsr(0x80860004, &m); err = check_cpuflags(); } else if (err == 0x01 && @@ -203,7 +204,7 @@ int check_knl_erratum(void) */ if (!is_intel() || cpu.family != 6 || - cpu.model != INTEL_FAM6_XEON_PHI_KNL) + cpu.model != 0x57 /*INTEL_XEON_PHI_KNL*/) return 0; /* |