diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/vppinfra/cpu.c | 25 | ||||
| -rw-r--r-- | src/vppinfra/cpu.h | 4 |
2 files changed, 27 insertions, 2 deletions
diff --git a/src/vppinfra/cpu.c b/src/vppinfra/cpu.c index 4f6b46f62de..735a1830a48 100644 --- a/src/vppinfra/cpu.c +++ b/src/vppinfra/cpu.c @@ -93,13 +93,34 @@ format_cpu_uarch (u8 * s, va_list * args) #if __x86_64__ u32 __attribute__ ((unused)) eax, ebx, ecx, edx; u8 model, family, stepping; + u8 amd_vendor = 0; + + if (__get_cpuid (0, &eax, &ebx, &ecx, &edx) == 0) + return format (s, "unknown (missing cpuid)"); + + if (amd_vendor (ebx, ecx, edx)) + amd_vendor = 1; if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0) return format (s, "unknown (missing cpuid)"); - model = ((eax >> 4) & 0x0f) | ((eax >> 12) & 0xf0); - family = (eax >> 8) & 0x0f; stepping = eax & 0x0f; + if (amd_vendor) + { + family = ((eax >> 8) & 0x0f); + model = ((eax >> 4) & 0x0f); + if (family >= 0xf) + { + family = family + ((eax >> 20) & 0xf); + model = (model | ((eax >> 12) & 0xf0)); + } + return format (s, "Zen (family 0x%02x model 0x%02x)", family, model); + } + else + { + model = ((eax >> 4) & 0x0f) | ((eax >> 12) & 0xf0); + family = (eax >> 8) & 0x0f; + } #define _(f,m,a,c) if ((model == m) && (family == f)) return \ format(s, "[0x%x] %s ([0x%02x] %s) stepping 0x%x", f, a, m, c, stepping); diff --git a/src/vppinfra/cpu.h b/src/vppinfra/cpu.h index 60439e0e3ca..29992bb11eb 100644 --- a/src/vppinfra/cpu.h +++ b/src/vppinfra/cpu.h @@ -39,6 +39,10 @@ #define foreach_march_variant #endif +#define amd_vendor(t1, t2, t3) \ + ((t1 == 0x68747541) && /* htuA */ \ + (t2 == 0x444d4163) && /* DMAc */ \ + (t3 == 0x69746e65)) /* itne */ typedef enum { CLIB_MARCH_VARIANT_TYPE = 0, |