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/* SPDX-License-Identifier: GPL-2.0-only */
#include <amdblocks/mca.h>
#include <amdblocks/msr_zen.h>
#include <cpu/x86/lapic.h>
#include <cpu/x86/msr.h>
#include <console/console.h>
#include <types.h>
static const char *const mca_bank_name[] = {
[0] = "Load-store unit",
[1] = "Instruction fetch unit",
[2] = "L2 cache unit",
[3] = "Decode unit",
[4] = "",
[5] = "Execution unit",
[6] = "Floating point unit",
[7] = "L3 cache unit",
[8] = "L3 cache unit",
[9] = "L3 cache unit",
[10] = "L3 cache unit",
[11] = "L3 cache unit",
[12] = "L3 cache unit",
[13] = "L3 cache unit",
[14] = "L3 cache unit",
[15] = "UMC",
[16] = "UMC",
[17] = "SMU",
[18] = "PSP",
[19] = "PB",
[20] = "CS",
[21] = "CS",
[22] = "PIE",
};
static bool mca_has_expected_bank_count(void)
{
return ARRAY_SIZE(mca_bank_name) == mca_get_bank_count();
}
static bool mca_is_valid_bank(unsigned int bank)
{
return (bank < ARRAY_SIZE(mca_bank_name) && mca_bank_name[bank] != NULL);
}
static const char *mca_get_bank_name(unsigned int bank)
{
if (mca_is_valid_bank(bank))
return mca_bank_name[bank];
else
return "";
}
static void mca_print_error(unsigned int bank)
{
msr_t msr;
printk(BIOS_WARNING, "#MC Error: core %u, bank %u %s\n", initial_lapicid(), bank,
mca_get_bank_name(bank));
msr = rdmsr(MCAX_STATUS_MSR(bank));
printk(BIOS_WARNING, " MC%u_STATUS = %08x_%08x\n", bank, msr.hi, msr.lo);
msr = rdmsr(MCAX_ADDR_MSR(bank));
printk(BIOS_WARNING, " MC%u_ADDR = %08x_%08x\n", bank, msr.hi, msr.lo);
msr = rdmsr(MCAX_MISC0_MSR(bank));
printk(BIOS_WARNING, " MC%u_MISC = %08x_%08x\n", bank, msr.hi, msr.lo);
msr = rdmsr(MCAX_CTL_MSR(bank));
printk(BIOS_WARNING, " MC%u_CTL = %08x_%08x\n", bank, msr.hi, msr.lo);
msr = rdmsr(MCA_CTL_MASK_MSR(bank));
printk(BIOS_WARNING, " MC%u_CTL_MASK = %08x_%08x\n", bank, msr.hi, msr.lo);
}
void mca_check_all_banks(void)
{
struct mca_bank_status mci;
const unsigned int num_banks = mca_get_bank_count();
if (!mca_has_expected_bank_count())
printk(BIOS_WARNING, "CPU has an unexpected number of MCA banks!\n");
for (unsigned int i = 0 ; i < num_banks ; i++) {
if (!mca_is_valid_bank(i))
continue;
mci.bank = i;
mci.sts = rdmsr(MCAX_STATUS_MSR(i));
if (mci.sts.hi || mci.sts.lo) {
mca_print_error(i);
if (CONFIG(ACPI_BERT) && mca_valid(mci.sts))
build_bert_mca_error(&mci);
}
}
}
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