diff options
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/include/arch/cpu.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/arch/x86/include/arch/cpu.h b/src/arch/x86/include/arch/cpu.h index e24c4464ee..8bf06e5a42 100644 --- a/src/arch/x86/include/arch/cpu.h +++ b/src/arch/x86/include/arch/cpu.h @@ -111,6 +111,16 @@ static inline bool cpu_is_intel(void) struct device; +#define CPUID_FROM_FMS(family, model, stepping) ( \ + /* bits 31..28: reserved, set to 0 */ \ + ((family) > 0xf ? ((family) - 0xf) & 0xff : 0) << 20 | \ + ((model) >> 4 & 0xf) << 16 | \ + /* bits 15..14: reserved, set to 0 */ \ + /* bits 13..12: processor type, set to 0 */ \ + ((family) > 0xf ? 0xf : (family) & 0xf) << 8 | \ + ((model) & 0xf) << 4 | \ + ((stepping) & 0xf) << 0) + #define CPUID_EXACT_MATCH_MASK 0xffffffff #define CPUID_ALL_STEPPINGS_MASK 0xfffffff0 |