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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 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 <cpu/x86/msr.h>
#include <cpu/amd/mtrr.h>
#include <device/device.h>
#include <device/pci.h>
#include <string.h>
#include <cpu/x86/msr.h>
#include <cpu/x86/pae.h>
#include <pc80/mc146818rtc.h>
#include <cpu/x86/lapic.h>
#include <cpu/cpu.h>
#include <cpu/x86/cache.h>
#include <cpu/x86/mtrr.h>
#include <cpu/amd/amdfam14.h>
#include <arch/acpi.h>
#if CONFIG_HAVE_ACPI_RESUME
#include <cpu/amd/agesa/s3_resume.h>
#endif
#define MCI_STATUS 0x401
msr_t rdmsr_amd(u32 index)
{
msr_t result;
__asm__ __volatile__(
"rdmsr"
:"=a"(result.lo), "=d"(result.hi)
:"c"(index), "D"(0x9c5a203a)
);
return result;
}
void wrmsr_amd(u32 index, msr_t msr)
{
__asm__ __volatile__(
"wrmsr"
: /* No outputs */
:"c"(index), "a"(msr.lo), "d"(msr.hi), "D"(0x9c5a203a)
);
}
static void model_14_init(device_t dev)
{
u32 i;
msr_t msr;
#if CONFIG_LOGICAL_CPUS
u32 siblings;
#endif
printk(BIOS_DEBUG, "Model 14 Init.\n");
disable_cache ();
/*
* AGESA sets the MTRRs main MTRRs. The shadow area needs to be set
* by coreboot. The amd_setup_mtrrs should work, but needs debug on fam14.
* TODO:
* amd_setup_mtrrs();
*/
/* Enable access to AMD RdDram and WrDram extension bits */
msr = rdmsr(SYSCFG_MSR);
msr.lo |= SYSCFG_MSR_MtrrFixDramModEn;
msr.lo &= ~SYSCFG_MSR_MtrrFixDramEn;
wrmsr(SYSCFG_MSR, msr);
/* Set shadow WB, RdMEM, WrMEM */
msr.lo = msr.hi = 0;
wrmsr (0x259, msr);
msr.hi = msr.lo = 0x1e1e1e1e;
wrmsr(0x250, msr);
wrmsr(0x258, msr);
for (i = 0x268; i <= 0x26f; i++)
wrmsr(i, msr);
msr = rdmsr(SYSCFG_MSR);
msr.lo &= ~SYSCFG_MSR_MtrrFixDramModEn;
msr.lo |= SYSCFG_MSR_MtrrFixDramEn;
wrmsr(SYSCFG_MSR, msr);
#if CONFIG_HAVE_ACPI_RESUME
if (acpi_slp_type == 3)
restore_mtrr();
#endif
x86_mtrr_check();
x86_enable_cache();
/* zero the machine check error status registers */
msr.lo = 0;
msr.hi = 0;
for (i = 0; i < 6; i++) {
wrmsr(MCI_STATUS + (i * 4), msr);
}
/* Enable the local cpu apics */
setup_lapic();
#if CONFIG_LOGICAL_CPUS
siblings = cpuid_ecx(0x80000008) & 0xff;
if (siblings > 0) {
msr = rdmsr_amd(CPU_ID_FEATURES_MSR);
msr.lo |= 1 << 28;
wrmsr_amd(CPU_ID_FEATURES_MSR, msr);
msr = rdmsr_amd(CPU_ID_EXT_FEATURES_MSR);
msr.hi |= 1 << (33 - 32);
wrmsr_amd(CPU_ID_EXT_FEATURES_MSR, msr);
}
#endif
/* DisableCf8ExtCfg */
msr = rdmsr(NB_CFG_MSR);
msr.hi &= ~(1 << (46 - 32));
wrmsr(NB_CFG_MSR, msr);
/* Write protect SMM space with SMMLOCK. */
msr = rdmsr(HWCR_MSR);
msr.lo |= (1 << 0);
wrmsr(HWCR_MSR, msr);
printk(BIOS_SPEW, "%s done.\n", __func__);
}
static struct device_operations cpu_dev_ops = {
.init = model_14_init,
};
static struct cpu_device_id cpu_table[] = {
{ X86_VENDOR_AMD, 0x500f00 }, /* ON-A0 */
{ X86_VENDOR_AMD, 0x500f01 }, /* ON-A1 */
{ X86_VENDOR_AMD, 0x500f10 }, /* ON-B0 */
{ X86_VENDOR_AMD, 0x500f20 }, /* ON-C0 */
{ 0, 0 },
};
static const struct cpu_driver model_14 __cpu_driver = {
.ops = &cpu_dev_ops,
.id_table = cpu_table,
};
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