/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
 * Copyright (C) 2010 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <arch/io.h>
#include <cpu/x86/msr.h>
#include <cpu/amd/mtrr.h>
#include <device/pci_def.h>
#include <southbridge/amd/sb700/sb700.h>
#include <southbridge/amd/sr5650/cmn.h>


void set_pcie_reset(void);
void set_pcie_dereset(void);

void set_pcie_reset(void)
{
	device_t pcie_core_dev;

	pcie_core_dev = dev_find_slot(0, PCI_DEVFN(0, 0));
	set_htiu_enable_bits(pcie_core_dev, 0xA8, 0xFFFFFFFF, 0x28282828);
	set_htiu_enable_bits(pcie_core_dev, 0xA9, 0x000000FF, 0x00000028);
}

void set_pcie_dereset(void)
{
	device_t pcie_core_dev;

	pcie_core_dev = dev_find_slot(0, PCI_DEVFN(0, 0));
	set_htiu_enable_bits(pcie_core_dev, 0xA8, 0xFFFFFFFF, 0x6F6F6F6F);
	set_htiu_enable_bits(pcie_core_dev, 0xA9, 0x000000FF, 0x0000006F);
}

/*************************************************
* enable the dedicated function in kgpe-d16 board.
* This function is called earlier than sr5650_enable.
*************************************************/
static void mainboard_enable(device_t dev)
{
	printk(BIOS_INFO, "Mainboard KGPE-D16 Enable. dev=0x%p\n", dev);

	msr_t msr, msr2;

	/* TOP_MEM: the top of DRAM below 4G */
	msr = rdmsr(TOP_MEM);
	printk
	    (BIOS_INFO, "%s, TOP MEM: msr.lo = 0x%08x, msr.hi = 0x%08x\n",
	     __func__, msr.lo, msr.hi);

	/* TOP_MEM2: the top of DRAM above 4G */
	msr2 = rdmsr(TOP_MEM2);
	printk
	    (BIOS_INFO, "%s, TOP MEM2: msr2.lo = 0x%08x, msr2.hi = 0x%08x\n",
	     __func__, msr2.lo, msr2.hi);

	set_pcie_dereset();
	/* get_ide_dma66(); */
}

struct chip_operations mainboard_ops = {
	.enable_dev = mainboard_enable,
};