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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2010 coresystems GmbH
*
* 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 <stdlib.h>
#include "cpu/x86/msr.h"
static const msrinit_t msr_table[] =
{
{CPU_RCONF_DEFAULT, {.hi = 0x24fffc00,.lo = 0x0000A000}}, /* Setup access to cache under 1MB.
* Rom Properties: Write Serialize, WriteProtect.
* RomBase: 0xFFFC0
* SysTop to RomBase Properties: Write Back.
* SysTop: 0x000A0
* System Memory Properties: (Write Back) */
{CPU_RCONF_A0_BF, {.hi = 0x00000000,.lo = 0x00000000}}, /* 0xA0000-0xBFFFF : (Write Back) */
{CPU_RCONF_C0_DF, {.hi = 0x00000000,.lo = 0x00000000}}, /* 0xC0000-0xDFFFF : (Write Back) */
{CPU_RCONF_E0_FF, {.hi = 0x00000000,.lo = 0x00000000}}, /* 0xE0000-0xFFFFF : (Write Back) */
/* Setup access to memory under 1MB. Note: VGA hole at 0xA0000-0xBFFFF */
{MSR_GLIU0_BASE1, {.hi = 0x20000000,.lo = 0x000fff80}}, // 0x00000-0x7FFFF
{MSR_GLIU0_BASE2, {.hi = 0x20000000,.lo = 0x080fffe0}}, // 0x80000-0x9FFFF
{MSR_GLIU0_SHADOW, {.hi = 0x2000FFFF,.lo = 0xFFFF0003}}, // 0xC0000-0xFFFFF
{MSR_GLIU1_BASE1, {.hi = 0x20000000,.lo = 0x000fff80}}, // 0x00000-0x7FFFF
{MSR_GLIU1_BASE2, {.hi = 0x20000000,.lo = 0x080fffe0}}, // 0x80000-0x9FFFF
{MSR_GLIU1_SHADOW, {.hi = 0x2000FFFF,.lo = 0xFFFF0003}}, // 0xC0000-0xFFFFF
/* Pre-setup access to memory above 1Mb. Here we set up about 500Mb of memory.
* It doesn't really matter in fact how much, however, because the only usage
* of this extended memory will be to host the ramstage stage at RAMBASE,
* currently 1Mb.
* These registers will be set to their correct value by the Northbridge init code.
*
* WARNING: if ramstage could not be loaded, these registers are probably
* incorrectly set here. You may comment the following two lines and set RAMBASE
* to 0x4000 to revert to the previous behavior for LX-boards.
*/
{MSR_GLIU0_SYSMEM, {.hi = 0x2000001F,.lo = 0x6BF00100}}, // 0x100000-0x1F6BF000
{MSR_GLIU1_SYSMEM, {.hi = 0x2000001F,.lo = 0x6BF00100}}, // 0x100000-0x1F6BF000
};
static void msr_init(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(msr_table); i++)
wrmsr(msr_table[i].index, msr_table[i].msr);
}
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