/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2011 - 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.
 *
 * 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 <cpu/x86/mtrr.h>
#include <northbridge/amd/agesa/agesawrapper.h>
#include "amdlib.h"

void amd_initcpuio(void)
{
	UINT64 MsrReg;
	UINT32 PciData;
	PCI_ADDR PciAddress;
	AMD_CONFIG_PARAMS StdHeader;

	/* Enable MMIO on AMD CPU Address Map Controller */

	/* Start to set MMIO 0000A0000-0000BFFFF to Node0 Link0 */
	PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x84);
	PciData = 0x00000B00;
	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
	PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x80);
	PciData = 0x00000A03;
	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);

	/* Set TOM-DFFFFFFF to Node0 Link0. */
	PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x8C);
	PciData = 0x00DFFF00;
	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
	LibAmdMsrRead(0xC001001A, &MsrReg, &StdHeader);
	MsrReg = (MsrReg >> 8) | 3;
	PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x88);
	PciData = (UINT32) MsrReg;
	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);

	/* Set E0000000-FFFFFFFF to Node0 Link0 with NP set. */
	PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0xBC);
	PciData = 0x00FFFF00 | 0x80;
	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
	PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0xB8);
	PciData = (CONFIG_MMCONF_BASE_ADDRESS >> 8) | 03;
	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);

	/* Start to set PCIIO 0000-FFFF to Node0 Link0 with ISA&VGA set. */
	PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0xC4);
//-  PciData = 0x0000F000;
	PciData = 0x00FFF000;
	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
	PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0xC0);
	PciData = 0x00000013;
	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
}

void amd_initmmio(void)
{
	UINT64 MsrReg;
	UINT32 PciData;
	PCI_ADDR PciAddress;
	AMD_CONFIG_PARAMS StdHeader;

	/*
	   Set the MMIO Configuration Base Address and Bus Range onto MMIO configuration base
	   Address MSR register.
	 */
	MsrReg = CONFIG_MMCONF_BASE_ADDRESS | (LibAmdBitScanReverse(CONFIG_MMCONF_BUS_NUMBER) << 2) | 1;
	LibAmdMsrWrite(0xC0010058, &MsrReg, &StdHeader);

	/*
	   Set the NB_CFG MSR register. Enable CF8 extended configuration cycles.
	 */
	LibAmdMsrRead(0xC001001F, &MsrReg, &StdHeader);
	MsrReg = MsrReg | 0x0000400000000000ull;
	LibAmdMsrWrite(0xC001001F, &MsrReg, &StdHeader);

	/* Enable Non-Post Memory in CPU */
	PciData = CONFIG_MMCONF_BASE_ADDRESS + (CONFIG_MMCONF_BUS_NUMBER * 0x100000) - 1;
	PciData = (PciData >> 8) & ~0xff;
	PciData |= 0x80;
	PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x018, 0x01, 0xA4);
	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);

	PciData = ((CONFIG_MMCONF_BASE_ADDRESS >> 8) | 0x03);
	PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x018, 0x01, 0xA0);
	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);

	/* Enable memory access */
	PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0, 0, 0x04);
	LibAmdPciRead(AccessWidth8, PciAddress, &PciData, &StdHeader);
	PciData |= BIT1;
	PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0, 0, 0x04);
	LibAmdPciWrite(AccessWidth8, PciAddress, &PciData, &StdHeader);

	/* Set ROM cache onto WP to decrease post time */
	MsrReg = (0x0100000000ull - CACHE_ROM_SIZE) | 5ull;
	LibAmdMsrWrite(0x20C, &MsrReg, &StdHeader);
	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CACHE_ROM_SIZE) | 0x800ull;
	LibAmdMsrWrite(0x20D, &MsrReg, &StdHeader);
}
