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/*
* 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.
*/
#include <cpu/x86/mtrr.h>
#include <northbridge/amd/pi/agesawrapper.h>
#include "amdlib.h"
void amd_initcpuio(void)
{
UINT64 MsrReg;
UINT32 PciData;
PCI_ADDR PciAddress;
AMD_CONFIG_PARAMS StdHeader;
/* Enable legacy video routing: D18F1xF4 VGA Enable */
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0xF4);
PciData = 1;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
/* The platform BIOS needs to ensure the memory ranges of Hudson legacy
* devices (TPM, HPET, BIOS RAM, Watchdog Timer, I/O APIC and ACPI) are
* set to non-posted regions.
*/
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0x84);
PciData = 0x00FEDF00; /* last address before processor local APIC at FEE00000 */
PciData |= 1 << 7; /* set NP (non-posted) bit */
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0x80);
PciData = (0xFED00000 >> 8) | 3; /* lowest NP address is HPET at FED00000 */
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
/* Map the remaining PCI hole as posted MMIO */
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0x8C);
PciData = 0x00FECF00; /* last address before non-posted range */
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);
/* Send all IO (0000-FFFF) to southbridge. */
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0xC4);
PciData = 0x0000F000;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0xC0);
PciData = 0x00000003;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
}
void amd_initmmio(void)
{
UINT64 MsrReg;
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 | 0x0000400000000000;
LibAmdMsrWrite (0xC001001F, &MsrReg, &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);
}
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