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path: root/src/soc/amd/common/block/pci/amd_pci_mmconf.c
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/*
 * This file is part of the coreboot project.
 *
 * 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 <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_MMCONF_BASE_ADDRESS | MMIO_RANGE_EN
			| fms(CONFIG_MMCONF_BUS_NUMBER) << MMIO_BUS_RANGE_SHIFT;
	wrmsr(MMIO_CONF_BASE, mmconf);
}