arch/x86/include/asm/required-features.h

   1 #ifndef _ASM_X86_REQUIRED_FEATURES_H
   2 #define _ASM_X86_REQUIRED_FEATURES_H
   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))
  16 #else
  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))
  22 #else
  23 # define NEED_PAE       0
  24 #endif
  25
  26 #ifdef CONFIG_X86_CMPXCHG64
  27 # define NEED_CX8       (1<<(X86_FEATURE_CX8 & 31))
  28 #else
  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
  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
  50 #ifdef CONFIG_X86_64
  51 #ifdef CONFIG_PARAVIRT
  52 /* Paravirtualized systems may not have PSE or PGE available */
  53 #define NEED_PSE        0
  54 #define NEED_PGE        0
  55 #else
  56 #define NEED_PSE        (1<<(X86_FEATURE_PSE) & 31)
  57 #define NEED_PGE        (1<<(X86_FEATURE_PGE) & 31)
  58 #endif
  59 #define NEED_MSR        (1<<(X86_FEATURE_MSR & 31))
  60 #define NEED_FXSR       (1<<(X86_FEATURE_FXSR & 31))
  61 #define NEED_XMM        (1<<(X86_FEATURE_XMM & 31))
  62 #define NEED_XMM2       (1<<(X86_FEATURE_XMM2 & 31))
  63 #define NEED_LM         (1<<(X86_FEATURE_LM & 31))
  64 #else
  65 #define NEED_PSE        0
  66 #define NEED_MSR        0
  67 #define NEED_PGE        0
  68 #define NEED_FXSR       0
  69 #define NEED_XMM        0
  70 #define NEED_XMM2       0
  71 #define NEED_LM         0
  72 #endif
  73
  74 #define REQUIRED_MASK0  (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\
  75                          NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\
  76                          NEED_XMM|NEED_XMM2)
  77 #define SSE_MASK        (NEED_XMM|NEED_XMM2)
  78
  79 #define REQUIRED_MASK1  (NEED_LM|NEED_3DNOW)
  80
  81 #define REQUIRED_MASK2  0
  82 #define REQUIRED_MASK3  (NEED_NOPL)
  83 #define REQUIRED_MASK4  0
  84 #define REQUIRED_MASK5  0
  85 #define REQUIRED_MASK6  0
  86 #define REQUIRED_MASK7  0
  87
  88 #endif /* _ASM_X86_REQUIRED_FEATURES_H */