diff options
Diffstat (limited to 'arch/x86/include/asm/required-features.h')
| -rw-r--r-- | arch/x86/include/asm/required-features.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/x86/include/asm/required-features.h b/arch/x86/include/asm/required-features.h new file mode 100644 index 00000000000..a01c4e37633 --- /dev/null +++ b/arch/x86/include/asm/required-features.h @@ -0,0 +1,82 @@ +#ifndef ASM_X86__REQUIRED_FEATURES_H +#define ASM_X86__REQUIRED_FEATURES_H + +/* Define minimum CPUID feature set for kernel These bits are checked + really early to actually display a visible error message before the + kernel dies. Make sure to assign features to the proper mask! + + Some requirements that are not in CPUID yet are also in the + CONFIG_X86_MINIMUM_CPU_FAMILY which is checked too. + + The real information is in arch/x86/Kconfig.cpu, this just converts + the CONFIGs into a bitmask */ + +#ifndef CONFIG_MATH_EMULATION +# define NEED_FPU (1<<(X86_FEATURE_FPU & 31)) +#else +# define NEED_FPU 0 +#endif + +#if defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) +# define NEED_PAE (1<<(X86_FEATURE_PAE & 31)) +#else +# define NEED_PAE 0 +#endif + +#ifdef CONFIG_X86_CMPXCHG64 +# define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31)) +#else +# define NEED_CX8 0 +#endif + +#if defined(CONFIG_X86_CMOV) || defined(CONFIG_X86_64) +# define NEED_CMOV (1<<(X86_FEATURE_CMOV & 31)) +#else +# define NEED_CMOV 0 +#endif + +#ifdef CONFIG_X86_USE_3DNOW +# define NEED_3DNOW (1<<(X86_FEATURE_3DNOW & 31)) +#else +# define NEED_3DNOW 0 +#endif + +#if defined(CONFIG_X86_P6_NOP) || defined(CONFIG_X86_64) +# define NEED_NOPL (1<<(X86_FEATURE_NOPL & 31)) +#else +# define NEED_NOPL 0 +#endif + +#ifdef CONFIG_X86_64 +#define NEED_PSE 0 +#define NEED_MSR (1<<(X86_FEATURE_MSR & 31)) +#define NEED_PGE (1<<(X86_FEATURE_PGE & 31)) +#define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31)) +#define NEED_XMM (1<<(X86_FEATURE_XMM & 31)) +#define NEED_XMM2 (1<<(X86_FEATURE_XMM2 & 31)) +#define NEED_LM (1<<(X86_FEATURE_LM & 31)) +#else +#define NEED_PSE 0 +#define NEED_MSR 0 +#define NEED_PGE 0 +#define NEED_FXSR 0 +#define NEED_XMM 0 +#define NEED_XMM2 0 +#define NEED_LM 0 +#endif + +#define REQUIRED_MASK0 (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\ + NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\ + NEED_XMM|NEED_XMM2) +#define SSE_MASK (NEED_XMM|NEED_XMM2) + +#define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW) + +#define REQUIRED_MASK2 0 +#define REQUIRED_MASK3 (NEED_NOPL) +#define REQUIRED_MASK4 0 +#define REQUIRED_MASK5 0 +#define REQUIRED_MASK6 0 +#define REQUIRED_MASK7 0 + +#endif /* ASM_X86__REQUIRED_FEATURES_H */ |