| /* |
| * 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. |
| */ |
| |
| #include <console/console.h> |
| #include <cpu/x86/msr.h> |
| #include <cpu/amd/mtrr.h> |
| #include <device/device.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> |
| #include <cpu/amd/agesa/s3_resume.h> |
| |
| #define MCI_STATUS 0x401 |
| |
| static void model_14_init(device_t dev) |
| { |
| u32 i; |
| msr_t msr; |
| #if IS_ENABLED(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 (acpi_is_wakeup()) |
| restore_mtrr(); |
| |
| 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 IS_ENABLED(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, |
| }; |