diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/amd/stoneyridge/mca.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/mca.c b/src/soc/amd/stoneyridge/mca.c index 8833b54401..df2b9611bf 100644 --- a/src/soc/amd/stoneyridge/mca.c +++ b/src/soc/amd/stoneyridge/mca.c @@ -19,8 +19,11 @@ #include <soc/cpu.h> #include <soc/northbridge.h> #include <console/console.h> +#include <arch/bert_storage.h> +#include <cper.h> struct mca_bank { + int bank; msr_t ctl; msr_t sts; msr_t addr; @@ -28,6 +31,127 @@ struct mca_bank { msr_t cmask; }; +static inline size_t mca_report_size_reqd(void) +{ + size_t size; + + size = sizeof(acpi_generic_error_status_t); + + size += sizeof(acpi_hest_generic_data_v300_t); + size += sizeof(cper_proc_generic_error_section_t); + + size += sizeof(acpi_hest_generic_data_v300_t); + size += sizeof(cper_ia32x64_proc_error_section_t); + + /* Check Error */ + size += cper_ia32x64_check_sz(); + + /* Context of MCG_CAP, MCG_STAT, MCG_CTL */ + size += cper_ia32x64_ctx_sz_bytype(CPER_IA32X64_CTX_MSR, 3); + + /* Context of MCi_CTL, MCi_STATUS, MCi_ADDR, MCi_MISC */ + size += cper_ia32x64_ctx_sz_bytype(CPER_IA32X64_CTX_MSR, 4); + + /* Context of CTL_MASK */ + size += cper_ia32x64_ctx_sz_bytype(CPER_IA32X64_CTX_MSR, 1); + + return size; +} + +static enum cper_x86_check_type error_to_chktype(struct mca_bank *mci) +{ + int error = mca_err_type(mci->sts); + + if (error == MCA_ERRTYPE_BUS) + return X86_PROCESSOR_BUS_CHK; + if (error == MCA_ERRTYPE_INT) + return X86_PROCESSOR_MS_CHK; + if (error == MCA_ERRTYPE_MEM) + return X86_PROCESSOR_CACHE_CHK; + if (error == MCA_ERRTYPE_TLB) + return X86_PROCESSOR_TLB_CHK; + + return X86_PROCESSOR_MS_CHK; /* unrecognized */ +} + +/* Fill additional information in the Generic Processor Error Section. */ +static void fill_generic_section(cper_proc_generic_error_section_t *sec, + struct mca_bank *mci) +{ + int type = mca_err_type(mci->sts); + + if (type == MCA_ERRTYPE_BUS) /* try to map MCA errors to CPER types */ + sec->error_type = GENPROC_ERRTYPE_BUS; + else if (type == MCA_ERRTYPE_INT) + sec->error_type = GENPROC_ERRTYPE_UARCH; + else if (type == MCA_ERRTYPE_MEM) + sec->error_type = GENPROC_ERRTYPE_CACHE; + else if (type == MCA_ERRTYPE_TLB) + sec->error_type = GENPROC_ERRTYPE_TLB; + else + sec->error_type = GENPROC_ERRTYPE_UNKNOWN; + sec->validation |= GENPROC_VALID_PROC_ERR_TYPE; +} + +/* Convert an error reported by an MCA bank into BERT information to be reported + * by the OS. The ACPI driver doesn't recognize/parse the IA32/X64 structure, + * which is the best method to report MSR context. As a result, add two + * structures: A "processor generic error" that is parsed, and an IA32/X64 one + * to capture complete information. + * + * Future work may attempt to interpret the specific Family 15h error symptoms + * found in the MCA registers. This data could enhance the reporting of the + * Processor Generic section and the failing error/check added to the + * IA32/X64 section. + */ +static void build_bert_mca_error(struct mca_bank *mci) +{ + acpi_generic_error_status_t *status; + acpi_hest_generic_data_v300_t *gen_entry; + acpi_hest_generic_data_v300_t *x86_entry; + cper_proc_generic_error_section_t *gen_sec; + cper_ia32x64_proc_error_section_t *x86_sec; + cper_ia32x64_proc_error_info_t *chk; + cper_ia32x64_context_t *ctx; + + if (mca_report_size_reqd() > bert_storage_remaining()) + goto failed; + + status = bert_new_event(&CPER_SEC_PROC_GENERIC_GUID); + if (!status) + goto failed; + + gen_entry = acpi_hest_generic_data3(status); + gen_sec = section_of_acpientry(gen_sec, gen_entry); + + fill_generic_section(gen_sec, mci); + + x86_entry = bert_append_ia32x64(status); + x86_sec = section_of_acpientry(x86_sec, x86_entry); + + chk = new_cper_ia32x64_check(status, x86_sec, error_to_chktype(mci)); + if (!chk) + goto failed; + + ctx = cper_new_ia32x64_context_msr(status, x86_sec, MCG_CAP, 3); + if (!ctx) + goto failed; + ctx = cper_new_ia32x64_context_msr(status, x86_sec, + MC0_CTL + (mci->bank * 4), 4); + if (!ctx) + goto failed; + ctx = cper_new_ia32x64_context_msr(status, x86_sec, + MC0_CTL_MASK + mci->bank, 1); + if (!ctx) + goto failed; + + return; + +failed: + /* We're here because of a hardware error, don't break something else */ + printk(BIOS_ERR, "Error: Not enough room in BERT region for Machine Check error\n"); +} + static const char *const mca_bank_name[] = { "Load-store unit", "Instruction fetch unit", @@ -74,6 +198,11 @@ void check_mca(void) mci.cmask = rdmsr(MC0_CTL_MASK + i); printk(BIOS_WARNING, " MC%d_CTL_MASK = %08x_%08x\n", i, mci.cmask.hi, mci.cmask.lo); + + mci.bank = i; + if (IS_ENABLED(CONFIG_ACPI_BERT) + && mca_valid(mci.sts)) + build_bert_mca_error(&mci); } } } |