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Clear ECC registers at startup

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This commit is contained in:
Sam Demeulemeester 2023-09-25 00:43:31 +02:00
parent 28328f140d
commit e5200c9b89
3 changed files with 14 additions and 5 deletions
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13
system/imc/amd_zen.c
View File

@ -32,6 +32,8 @@
#define AMD_UMC_ERROR_CECC_BIT (1 << 14)
#define AMD_UMC_ERROR_UECC_BIT (1 << 13)
#define AMD_UMC_ERR_CNT_EN (1 << 15)
#define AMD_MCG_CTL_2_BANKS (1 << 16) | (1 << 15)
#define AMD_MCG_CTL_4_BANKS (1 << 18) | (1 << 17) | (1 << 16) | (1 << 15)
#define AMD_MCA_STATUS_WR_ENABLE (1 << 18)
#define ECC_RD_EN (1 << 10)
@ -96,16 +98,19 @@ void get_imc_config_amd_zen(void)
// Number of UMC to init
uint8_t umc = 0, umc_max = 0;
uint32_t umc_banks_bits = 0;
if (imc.family == IMC_K19_VRM || imc.family == IMC_K19_RPL) {
umc_max = 4;
umc_banks_bits = AMD_MCG_CTL_4_BANKS;
} else {
umc_max = 2;
umc_banks_bits = AMD_MCG_CTL_2_BANKS;
}
// Enable ECC reporting
rdmsr(MSR_IA32_MCG_CTL, regl, regh);
wrmsr(MSR_IA32_MCG_CTL, regl | 0x18000, regh); // DBG: X86::MSR::MCG_CTL[16:15] ?
wrmsr(MSR_IA32_MCG_CTL, regl | umc_banks_bits, regh);
rdmsr(MSR_AMD64_HW_CONF, regl, regh);
wrmsr(MSR_AMD64_HW_CONF, regl | AMD_MCA_STATUS_WR_ENABLE, regh); // // Enable Write to MCA STATUS Register
@ -121,11 +126,13 @@ void get_imc_config_amd_zen(void)
smn_reg = amd_smn_read(AMD_SMN_UMC_ECC_ERR_CNT_SEL + AMD_SMN_UMC_CHB_OFFSET);
amd_smn_write(AMD_SMN_UMC_ECC_ERR_CNT_SEL + AMD_SMN_UMC_CHB_OFFSET, smn_reg | AMD_UMC_ERR_CNT_EN); // Enable CH1 Error CNT
poll_ecc_amd_zen(false); // Clear ECC registers
}
#endif
}
void poll_ecc_amd_zen(void)
void poll_ecc_amd_zen(bool report)
{
uint8_t umc = 0, umc_max = 0;
uint32_t regh, regl;
@ -176,7 +183,9 @@ void poll_ecc_amd_zen(void)
if (!ecc_status.count) ecc_status.count++;
// Report error
if (report) {
ecc_error();
}
// Clear Error
rdmsr(MSR_AMD64_UMC_MCA_STATUS + (AMD_UMC_OFFSET * umc), regl, regh);

2
system/imc/imc.h
View File

@ -30,6 +30,6 @@ void get_imc_config_intel_adl(void);
*/
/* ECC Polling Code for AMD Zen CPUs */
void poll_ecc_amd_zen(void);
void poll_ecc_amd_zen(bool report);
#endif /* _IMC_H_ */

2
system/memctrl.c
View File

@ -78,7 +78,7 @@ void memctrl_poll_ecc(void)
case IMC_K19_VRM:
case IMC_K19_RPL:
case IMC_K19_RBT:
poll_ecc_amd_zen();
poll_ecc_amd_zen(true);
break;
default:
break;