summaryrefslogtreecommitdiff
path: root/arch/x86/include/asm/required-features.h
diff options
context:
space:
mode:
authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/x86/include/asm/required-features.h
Initial import
Diffstat (limited to 'arch/x86/include/asm/required-features.h')
-rw-r--r--arch/x86/include/asm/required-features.h96
1 files changed, 96 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 000000000..5c6e4fb37
--- /dev/null
+++ b/arch/x86/include/asm/required-features.h
@@ -0,0 +1,96 @@
+#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_MATOM
+# define NEED_MOVBE (1<<(X86_FEATURE_MOVBE & 31))
+#else
+# define NEED_MOVBE 0
+#endif
+
+#ifdef CONFIG_X86_64
+#ifdef CONFIG_PARAVIRT
+/* Paravirtualized systems may not have PSE or PGE available */
+#define NEED_PSE 0
+#define NEED_PGE 0
+#else
+#define NEED_PSE (1<<(X86_FEATURE_PSE) & 31)
+#define NEED_PGE (1<<(X86_FEATURE_PGE) & 31)
+#endif
+#define NEED_MSR (1<<(X86_FEATURE_MSR & 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 (NEED_MOVBE)
+#define REQUIRED_MASK5 0
+#define REQUIRED_MASK6 0
+#define REQUIRED_MASK7 0
+#define REQUIRED_MASK8 0
+#define REQUIRED_MASK9 0
+
+#endif /* _ASM_X86_REQUIRED_FEATURES_H */