diff options
Diffstat (limited to 'src/northbridge/amd/amdk8/raminit_f_dqs.c')
| -rw-r--r-- | src/northbridge/amd/amdk8/raminit_f_dqs.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/src/northbridge/amd/amdk8/raminit_f_dqs.c b/src/northbridge/amd/amdk8/raminit_f_dqs.c index e8add87a7e..dc49d4e893 100644 --- a/src/northbridge/amd/amdk8/raminit_f_dqs.c +++ b/src/northbridge/amd/amdk8/raminit_f_dqs.c @@ -432,14 +432,27 @@ static uint16_t get_exact_T1000(unsigned i) /*15*/ 5000, 4000, 3000, 2500, }; - unsigned fid_cur; int index; - msr_t msr; - msr = rdmsr(0xc0010042); - fid_cur = msr.lo & 0x3f; - index = fid_cur>>1; + /* Check for FID control support */ + struct cpuid_result cpuid1; + cpuid1 = cpuid(0x8000007); + if( cpuid1.edx & 0x02 ) { + /* Use current FID */ + unsigned fid_cur; + msr = rdmsr(0xc0010042); + fid_cur = msr.lo & 0x3f; + + index = fid_cur>>1; + } else { + /* Use startup FID */ + unsigned fid_start; + msr = rdmsr(0xc0010015); + fid_start = (msr.lo & (0x3f << 24)); + + index = fid_start>>25; + } if(index>12) return T1000_a[i]; |