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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 <soc/pci_devs.h>
#include <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 SB800
* 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);
/* last address before processor local APIC at FEE00000 */
PciData = 0x00fedf00;
PciData |= 1 << 7; /* set NP (non-posted) bit */
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x80);
/* lowest NP address is HPET at FED00000 */
PciData = (0xfed00000 >> 8) | 3;
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(TOP_MEM, &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 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);
if (IS_ENABLED(CONFIG_UDELAY_LAPIC)) {
LibAmdMsrRead(0x1b, &MsrReg, &StdHeader);
MsrReg |= 1 << 11;
LibAmdMsrWrite(0x1b, &MsrReg, &StdHeader);
}
}
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