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Diffstat (limited to 'src/soc/amd/stoneyridge/mca.c')
-rw-r--r-- | src/soc/amd/stoneyridge/mca.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/mca.c b/src/soc/amd/stoneyridge/mca.c new file mode 100644 index 0000000000..de86ded863 --- /dev/null +++ b/src/soc/amd/stoneyridge/mca.c @@ -0,0 +1,77 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2018 Advanced Micro Devices, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <cpu/x86/msr.h> +#include <arch/acpi.h> +#include <cpu/amd/amdfam15.h> +#include <soc/cpu.h> +#include <soc/northbridge.h> +#include <console/console.h> + +static const char *const mca_bank_name[] = { + "Load-store unit", + "Instruction fetch unit", + "Combined unit", + "Reserved", + "Northbridge", + "Execution unit", + "Floating point unit" +}; + +void check_mca(void) +{ + int i; + msr_t msr; + int num_banks; + + msr = rdmsr(MCG_CAP); + num_banks = msr.lo & MCA_BANKS_MASK; + + if (is_warm_reset()) { + for (i = 0 ; i < num_banks ; i++) { + if (i == 3) /* Reserved in Family 15h */ + continue; + + msr = rdmsr(MC0_STATUS + (i * 4)); + if (msr.hi || msr.lo) { + int core = cpuid_ebx(1) >> 24; + + printk(BIOS_WARNING, "#MC Error: core %d, bank %d %s\n", + core, i, mca_bank_name[i]); + + printk(BIOS_WARNING, " MC%d_STATUS = %08x_%08x\n", + i, msr.hi, msr.lo); + msr = rdmsr(MC0_ADDR + (i * 4)); + printk(BIOS_WARNING, " MC%d_ADDR = %08x_%08x\n", + i, msr.hi, msr.lo); + msr = rdmsr(MC0_MISC + (i * 4)); + printk(BIOS_WARNING, " MC%d_MISC = %08x_%08x\n", + i, msr.hi, msr.lo); + msr = rdmsr(MC0_CTL + (i * 4)); + printk(BIOS_WARNING, " MC%d_CTL = %08x_%08x\n", + i, msr.hi, msr.lo); + msr = rdmsr(MC0_CTL_MASK + i); + printk(BIOS_WARNING, " MC%d_CTL_MASK = %08x_%08x\n", + i, msr.hi, msr.lo); + } + } + } + + /* zero the machine check error status registers */ + msr.lo = 0; + msr.hi = 0; + for (i = 0 ; i < num_banks ; i++) + wrmsr(MC0_STATUS + (i * 4), msr); +} |