| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 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 <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/amdfam16.h> |
| #include <arch/acpi.h> |
| #if CONFIG_HAVE_ACPI_RESUME |
| #include <cpu/amd/agesa/s3_resume.h> |
| #endif |
| |
| static void model_16_init(device_t dev) |
| { |
| printk(BIOS_DEBUG, "Model 16 Init.\n"); |
| |
| u8 i; |
| msr_t msr; |
| int msrno; |
| #if CONFIG_LOGICAL_CPUS |
| u32 siblings; |
| #endif |
| |
| //x86_enable_cache(); |
| //amd_setup_mtrrs(); |
| //x86_mtrr_check(); |
| disable_cache (); |
| /* 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); |
| |
| // BSP: make a0000-bffff UC, c0000-fffff WB, same as OntarioApMtrrSettingsList for APs |
| msr.lo = msr.hi = 0; |
| wrmsr (0x259, msr); |
| msr.lo = msr.hi = 0x1e1e1e1e; |
| wrmsr(0x250, msr); |
| wrmsr(0x258, msr); |
| for (msrno = 0x268; msrno <= 0x26f; msrno++) |
| wrmsr (msrno, 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); |
| } |
| printk(BIOS_DEBUG, "siblings = %02d, ", siblings); |
| #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); |
| } |
| |
| static struct device_operations cpu_dev_ops = { |
| .init = model_16_init, |
| }; |
| |
| static struct cpu_device_id cpu_table[] = { |
| { X86_VENDOR_AMD, 0x730f00 }, /* ML-A0, Guess, TODO: */ |
| { 0, 0 }, |
| }; |
| |
| static const struct cpu_driver model_16 __cpu_driver = { |
| .ops = &cpu_dev_ops, |
| .id_table = cpu_table, |
| }; |