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-rw-r--r--src/cpu/amd/model_fxx/fidvid.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/cpu/amd/model_fxx/fidvid.c b/src/cpu/amd/model_fxx/fidvid.c
index 9851e6511e..03415d1b89 100644
--- a/src/cpu/amd/model_fxx/fidvid.c
+++ b/src/cpu/amd/model_fxx/fidvid.c
@@ -535,6 +535,9 @@ static void init_fidvid_bsp(unsigned bsp_apicid)
unsigned i;
#endif
+ if ((cpuid_edx(0x80000007) & 0x06) != 0x06)
+ return; /* FID/VID change not supported */
+
msr_t msr;
msr = rdmsr(0xc0010042);
fid_max = ((msr.lo >> 16) & 0x3f); /* max fid */