diff options
Diffstat (limited to 'src/arch/x86/include/ipxe/cpuid.h')
| -rw-r--r-- | src/arch/x86/include/ipxe/cpuid.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/arch/x86/include/ipxe/cpuid.h b/src/arch/x86/include/ipxe/cpuid.h index 2e2cc7c1..a9df9f0d 100644 --- a/src/arch/x86/include/ipxe/cpuid.h +++ b/src/arch/x86/include/ipxe/cpuid.h @@ -57,6 +57,12 @@ struct x86_features { /** Get CPU model */ #define CPUID_MODEL 0x80000002UL +/** Get APM information */ +#define CPUID_APM 0x80000007UL + +/** Invariant TSC */ +#define CPUID_APM_EDX_TSC_INVARIANT 0x00000100UL + /** * Issue CPUID instruction * |