| /* |
| * 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/multicore.h> |
| #include <cpu/amd/amdfam12.h> |
| |
| #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_12_init(device_t dev) |
| { |
| printk(BIOS_DEBUG, "Model 12 Init - a no-op.\n"); |
| |
| u8 i; |
| msr_t msr; |
| |
| #if CONFIG_LOGICAL_CPUS == 1 |
| u32 siblings; |
| #endif |
| |
| // struct node_core_id id; |
| // id = get_node_core_id(read_nb_cfg_54()); /* nb_cfg_54 can not be set */ |
| // printk(BIOS_DEBUG, "nodeid = %02d, coreid = %02d\n", id.nodeid, id.coreid); |
| |
| /* Turn on caching if we haven't already */ |
| x86_enable_cache(); |
| amd_setup_mtrrs(); |
| x86_mtrr_check(); |
| |
| disable_cache(); |
| |
| /* zero the machine check error status registers */ |
| msr.lo = 0; |
| msr.hi = 0; |
| for (i = 0; i < 5; i++) { |
| wrmsr(MCI_STATUS + (i * 4), msr); |
| } |
| |
| enable_cache(); |
| |
| /* Enable the local cpu apics */ |
| setup_lapic(); |
| |
| /* Set the processor name string */ |
| // init_processor_name(); |
| |
| |
| #if CONFIG_LOGICAL_CPUS == 1 |
| 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_12_init, |
| }; |
| |
| static struct cpu_device_id cpu_table[] = { |
| { X86_VENDOR_AMD, 0x300f00 }, /* LN1_A0x */ |
| { X86_VENDOR_AMD, 0x300f01 }, /* LN1_A1x */ |
| { X86_VENDOR_AMD, 0x300f10 }, /* LN1_B0x */ |
| { X86_VENDOR_AMD, 0x300f20 }, /* LN2_B0x */ |
| { 0, 0 }, |
| }; |
| |
| static const struct cpu_driver model_12 __cpu_driver = { |
| .ops = &cpu_dev_ops, |
| .id_table = cpu_table, |
| }; |