blob: 09645f3d332734b2e05fc9eb7cb3ab8f8b24089e [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 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 <console/console.h>
#include <cpu/x86/msr.h>
#include <device/device.h>
/*************************************************
* enable the dedicated function in thatcher board.
*************************************************/
static void mainboard_enable(struct device *dev)
{
msr_t msr;
printk(BIOS_INFO, "Mainboard " CONFIG_MAINBOARD_PART_NUMBER " Enable.\n");
msr = rdmsr(0xC0011020);
msr.lo &= ~(1 << 28);
wrmsr(0xC0011020, msr);
msr = rdmsr(0xC0011022);
msr.lo &= ~(1 << 4);
msr.lo &= ~(1 << 13);
wrmsr(0xC0011022, msr);
msr = rdmsr(0xC0011023);
msr.lo &= ~(1 << 23);
wrmsr(0xC0011023, msr);
}
struct chip_operations mainboard_ops = {
.enable_dev = mainboard_enable,
};