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_MATOM
51# define NEED_MOVBE (1<<(X86_FEATURE_MOVBE & 31))
52#else
53# define NEED_MOVBE 0
54#endif
55
56#ifdef CONFIG_X86_64
57#ifdef CONFIG_PARAVIRT
58/* Paravirtualized systems may not have PSE or PGE available */
59#define NEED_PSE 0
60#define NEED_PGE 0
61#else
62#define NEED_PSE (1<<(X86_FEATURE_PSE) & 31)
63#define NEED_PGE (1<<(X86_FEATURE_PGE) & 31)
64#endif
65#define NEED_MSR (1<<(X86_FEATURE_MSR & 31))
66#define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31))
67#define NEED_XMM (1<<(X86_FEATURE_XMM & 31))
68#define NEED_XMM2 (1<<(X86_FEATURE_XMM2 & 31))
69#define NEED_LM (1<<(X86_FEATURE_LM & 31))
70#else
71#define NEED_PSE 0
72#define NEED_MSR 0
73#define NEED_PGE 0
74#define NEED_FXSR 0
75#define NEED_XMM 0
76#define NEED_XMM2 0
77#define NEED_LM 0
78#endif
79
80#define REQUIRED_MASK0 (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\
81 NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\
82 NEED_XMM|NEED_XMM2)
83#define SSE_MASK (NEED_XMM|NEED_XMM2)
84
85#define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW)
86
87#define REQUIRED_MASK2 0
88#define REQUIRED_MASK3 (NEED_NOPL)
89#define REQUIRED_MASK4 (NEED_MOVBE)
90#define REQUIRED_MASK5 0
91#define REQUIRED_MASK6 0
92#define REQUIRED_MASK7 0
93#define REQUIRED_MASK8 0
94#define REQUIRED_MASK9 0
95#define REQUIRED_MASK10 0
96#define REQUIRED_MASK11 0
97#define REQUIRED_MASK12 0
98#define REQUIRED_MASK13 0
99#define REQUIRED_MASK14 0
100#define REQUIRED_MASK15 0
101#define REQUIRED_MASK16 0
102#define REQUIRED_MASK17 0
103#define REQUIRED_MASK18 0
104#define REQUIRED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 19)
105
106#endif /* _ASM_X86_REQUIRED_FEATURES_H */
107