diff options
Diffstat (limited to 'src/cpu/amd')
| -rw-r--r-- | src/cpu/amd/model_fxx/model_fxx_init.c | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/src/cpu/amd/model_fxx/model_fxx_init.c b/src/cpu/amd/model_fxx/model_fxx_init.c index ea00f47837..a5112b3823 100644 --- a/src/cpu/amd/model_fxx/model_fxx_init.c +++ b/src/cpu/amd/model_fxx/model_fxx_init.c @@ -411,33 +411,35 @@ static inline void k8_errata(void) msr.hi |= 1 << (43 - 32); wrmsr_amd(BU_CFG_MSR, msr); + /* Erratum 110 */ + /* This erratum applies to D0 thru E6 revisions + * Revision F and later are unaffected. There are two fixes + * depending on processor revision. + */ if (is_cpu_d0()) { /* Erratum 110 ... */ msr = rdmsr_amd(CPU_ID_HYPER_EXT_FEATURES); msr.hi |= 1; wrmsr_amd(CPU_ID_HYPER_EXT_FEATURES, msr); } -#endif -#if CONFIG_K8_REV_F_SUPPORT == 0 if (!is_cpu_pre_e0()) -#endif { /* Erratum 110 ... */ msr = rdmsr_amd(CPU_ID_EXT_FEATURES_MSR); msr.hi |= 1; wrmsr_amd(CPU_ID_EXT_FEATURES_MSR, msr); } - +#endif + + #if CONFIG_K8_REV_F_SUPPORT == 0 - /* I can't touch this msr on early buggy cpus */ + /* I can't touch this msr on early buggy cpus */ if (!is_cpu_pre_b3()) #endif { - - /* Erratum 89 ... */ msr = rdmsr(NB_CFG_MSR); - msr.lo |= 1 << 3; + #if CONFIG_K8_REV_F_SUPPORT == 0 if (!is_cpu_pre_c0() && is_cpu_pre_d0()) { /* D0 later don't need it */ @@ -448,6 +450,18 @@ static inline void k8_errata(void) msr.hi |= 1 << (36 - 32); } #endif + /* Erratum 89 ... */ + /* Erratum 89 is mistakenly labeled as 88 in AMD pub #25759 + * It is correctly labeled as 89 on page 49 of the document + * and in AMD pub#33610 + */ + msr.lo |= 1 << 3; + /* Erratum 169 */ + /* This supersedes erratum 131; 131 should not be applied with 169 + * We also need to set some bits in the northbridge, handled in src/northbridge/amdk8/ + */ + msr.hi |= 1; + wrmsr(NB_CFG_MSR, msr); } /* Erratum 122 */ @@ -455,12 +469,6 @@ static inline void k8_errata(void) msr.lo |= 1 << 6; wrmsr(HWCR_MSR, msr); -#if CONFIG_K8_REV_F_SUPPORT == 1 - /* Erratum 131... */ - msr = rdmsr(NB_CFG_MSR); - msr.lo |= 1 << 20; - wrmsr(NB_CFG_MSR, msr); -#endif } |