amd_pci_mmconf.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <amdblocks/amd_pci_mmconf.h>
#include <cpu/amd/msr.h>
#include <cpu/x86/msr.h>
#include <cpu/x86/mtrr.h>
 
void enable_pci_mmconf(void)
{
        msr_t mmconf;
 
        mmconf.hi = 0;
        mmconf.lo = CONFIG_ECAM_MMCONF_BASE_ADDRESS | MMIO_RANGE_EN
                        | fms(CONFIG_ECAM_MMCONF_BUS_NUMBER) << MMIO_BUS_RANGE_SHIFT;
        wrmsr(MMIO_CONF_BASE, mmconf);
}