include/asm-i386/required-features.h

   1 #ifndef _ASM_REQUIRED_FEATURES_H
   2 #define _ASM_REQUIRED_FEATURES_H 1
   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/i386/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 #ifdef CONFIG_X86_PAE
  21 # define NEED_PAE       (1<<(X86_FEATURE_PAE & 31))
  22 #else
  23 # define NEED_PAE       0
  24 #endif
  25
  26 #ifdef CONFIG_X86_CMOV
  27 # define NEED_CMOV      (1<<(X86_FEATURE_CMOV & 31))
  28 #else
  29 # define NEED_CMOV      0
  30 #endif
  31
  32 #ifdef CONFIG_X86_PAE
  33 # define NEED_CX8       (1<<(X86_FEATURE_CX8 & 31))
  34 #else
  35 # define NEED_CX8       0
  36 #endif
  37
  38 #define REQUIRED_MASK0  (NEED_FPU|NEED_PAE|NEED_CMOV|NEED_CX8)
  39
  40 #ifdef CONFIG_X86_USE_3DNOW
  41 # define NEED_3DNOW     (1<<(X86_FEATURE_3DNOW & 31))
  42 #else
  43 # define NEED_3DNOW     0
  44 #endif
  45
  46 #define REQUIRED_MASK1  (NEED_3DNOW)
  47
  48 #define REQUIRED_MASK2  0
  49 #define REQUIRED_MASK3  0
  50 #define REQUIRED_MASK4  0
  51 #define REQUIRED_MASK5  0
  52 #define REQUIRED_MASK6  0
  53 #define REQUIRED_MASK7  0
  54
  55 #endif