mca_common.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <amdblocks/mca.h>
#include <cpu/x86/msr.h>
#include <console/console.h>
#include <types.h>
#include "mca_common_defs.h"
 
static 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");
 
        if (mca_skip_check())
                return;
 
        for (unsigned int i = 0 ; i < num_banks ; i++) {
                if (!mca_is_valid_bank(i))
                        continue;
 
                mci.bank = i;
                /* The MCA status register can be used in both the MCA and MCAX case */
                mci.sts = rdmsr(IA32_MC_STATUS(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);
                }
        }
}
 
void check_mca(void)
{
        mca_check_all_banks();
        /* mca_clear_status uses the MCA registers which can be used in both the MCA and MCAX
          case */
        mca_clear_status();
}