| Vegard Nossum | 77ef50a | 2008-06-18 17:08:48 +0200 | [diff] [blame] | 1 | #ifndef ASM_X86__REQUIRED_FEATURES_H |
| 2 | #define ASM_X86__REQUIRED_FEATURES_H |
| Brian Gerst | 23e5305 | 2007-10-20 13:41:41 -0400 | [diff] [blame] | 3 | |
| 4 | /* Define minimum CPUID feature set for kernel These bits are checked |
| 5 | really early to actually display a visible error message before the |
| 6 | kernel dies. Make sure to assign features to the proper mask! |
| 7 | |
| 8 | Some requirements that are not in CPUID yet are also in the |
| 9 | CONFIG_X86_MINIMUM_CPU_FAMILY which is checked too. |
| 10 | |
| 11 | The real information is in arch/x86/Kconfig.cpu, this just converts |
| 12 | the CONFIGs into a bitmask */ |
| 13 | |
| 14 | #ifndef CONFIG_MATH_EMULATION |
| 15 | # define NEED_FPU (1<<(X86_FEATURE_FPU & 31)) |
| Thomas Gleixner | 96a388d | 2007-10-11 11:20:03 +0200 | [diff] [blame] | 16 | #else |
| Brian Gerst | 23e5305 | 2007-10-20 13:41:41 -0400 | [diff] [blame] | 17 | # define NEED_FPU 0 |
| 18 | #endif |
| 19 | |
| 20 | #if defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) |
| 21 | # define NEED_PAE (1<<(X86_FEATURE_PAE & 31)) |
| Brian Gerst | 23e5305 | 2007-10-20 13:41:41 -0400 | [diff] [blame] | 22 | #else |
| 23 | # define NEED_PAE 0 |
| Jan Beulich | f8096f9 | 2008-04-22 16:27:29 +0100 | [diff] [blame] | 24 | #endif |
| 25 | |
| 26 | #ifdef CONFIG_X86_CMPXCHG64 |
| 27 | # define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31)) |
| 28 | #else |
| Brian Gerst | 23e5305 | 2007-10-20 13:41:41 -0400 | [diff] [blame] | 29 | # define NEED_CX8 0 |
| 30 | #endif |
| 31 | |
| 32 | #if defined(CONFIG_X86_CMOV) || defined(CONFIG_X86_64) |
| 33 | # define NEED_CMOV (1<<(X86_FEATURE_CMOV & 31)) |
| 34 | #else |
| 35 | # define NEED_CMOV 0 |
| 36 | #endif |
| 37 | |
| 38 | #ifdef CONFIG_X86_USE_3DNOW |
| 39 | # define NEED_3DNOW (1<<(X86_FEATURE_3DNOW & 31)) |
| 40 | #else |
| 41 | # define NEED_3DNOW 0 |
| 42 | #endif |
| 43 | |
| H. Peter Anvin | b6734c3 | 2008-08-18 17:39:32 -0700 | [diff] [blame] | 44 | #if defined(CONFIG_X86_P6_NOP) || defined(CONFIG_X86_64) |
| 45 | # define NEED_NOPL (1<<(X86_FEATURE_NOPL & 31)) |
| 46 | #else |
| 47 | # define NEED_NOPL 0 |
| 48 | #endif |
| 49 | |
| Brian Gerst | 23e5305 | 2007-10-20 13:41:41 -0400 | [diff] [blame] | 50 | #ifdef CONFIG_X86_64 |
| Jeremy Fitzhardinge | 4f30cb0 | 2008-06-25 00:19:21 -0400 | [diff] [blame] | 51 | #define NEED_PSE 0 |
| Brian Gerst | 23e5305 | 2007-10-20 13:41:41 -0400 | [diff] [blame] | 52 | #define NEED_MSR (1<<(X86_FEATURE_MSR & 31)) |
| 53 | #define NEED_PGE (1<<(X86_FEATURE_PGE & 31)) |
| 54 | #define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31)) |
| 55 | #define NEED_XMM (1<<(X86_FEATURE_XMM & 31)) |
| 56 | #define NEED_XMM2 (1<<(X86_FEATURE_XMM2 & 31)) |
| 57 | #define NEED_LM (1<<(X86_FEATURE_LM & 31)) |
| 58 | #else |
| 59 | #define NEED_PSE 0 |
| 60 | #define NEED_MSR 0 |
| 61 | #define NEED_PGE 0 |
| 62 | #define NEED_FXSR 0 |
| 63 | #define NEED_XMM 0 |
| 64 | #define NEED_XMM2 0 |
| 65 | #define NEED_LM 0 |
| 66 | #endif |
| 67 | |
| 68 | #define REQUIRED_MASK0 (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\ |
| 69 | NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\ |
| 70 | NEED_XMM|NEED_XMM2) |
| 71 | #define SSE_MASK (NEED_XMM|NEED_XMM2) |
| 72 | |
| 73 | #define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW) |
| 74 | |
| 75 | #define REQUIRED_MASK2 0 |
| H. Peter Anvin | b6734c3 | 2008-08-18 17:39:32 -0700 | [diff] [blame] | 76 | #define REQUIRED_MASK3 (NEED_NOPL) |
| Brian Gerst | 23e5305 | 2007-10-20 13:41:41 -0400 | [diff] [blame] | 77 | #define REQUIRED_MASK4 0 |
| 78 | #define REQUIRED_MASK5 0 |
| 79 | #define REQUIRED_MASK6 0 |
| 80 | #define REQUIRED_MASK7 0 |
| 81 | |
| Vegard Nossum | 77ef50a | 2008-06-18 17:08:48 +0200 | [diff] [blame] | 82 | #endif /* ASM_X86__REQUIRED_FEATURES_H */ |