diff options
Diffstat (limited to 'src/cpu/amd/agesa/family15/model_15_init.c')
-rw-r--r-- | src/cpu/amd/agesa/family15/model_15_init.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/src/cpu/amd/agesa/family15/model_15_init.c b/src/cpu/amd/agesa/family15/model_15_init.c new file mode 100644 index 0000000000..d100338170 --- /dev/null +++ b/src/cpu/amd/agesa/family15/model_15_init.c @@ -0,0 +1,147 @@ +/* + * 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 <cpu/cpu.h> +#include <cpu/x86/lapic.h> +#include <cpu/x86/cache.h> +#include <cpu/x86/mtrr.h> +#include <cpu/amd/amdfam15.h> + +static msr_t rdmsr_amd(u32 index) +{ + msr_t result; + __asm__ __volatile__( + "rdmsr" + :"=a"(result.lo), "=d"(result.hi) + :"c"(index), "D"(0x9c5a203a) + ); + return result; +} + +static 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_15_init(device_t dev) +{ + printk(BIOS_DEBUG, "Model 15 Init.\n"); + + u8 i; + msr_t msr; + int msrno; +#if CONFIG_LOGICAL_CPUS == 1 + u32 siblings; +#endif + + disable_cache (); + /* Enable access to AMD RdDram and WrDram extension bits */ + msr = rdmsr(SYSCFG_MSR); + msr.lo |= SYSCFG_MSR_MtrrFixDramModEn; + wrmsr(SYSCFG_MSR, msr); + + // BSP: make a0000-bffff UC, c0000-fffff WB, same as ApMtrrSettingsList for APs + msr.lo = msr.hi = 0; + wrmsr (0x259, msr); + msr.lo = msr.hi = 0x1e1e1e1e; + for (msrno = 0x268; msrno <= 0x26f; msrno++) + wrmsr (msrno, msr); + + msr.lo = 0x04040404; msr.hi = 0x04040404; + wrmsr(0x259, msr); + + /* disable access to AMD RdDram and WrDram extension bits */ + msr = rdmsr(SYSCFG_MSR); + msr.lo &= ~SYSCFG_MSR_MtrrFixDramModEn; + wrmsr(SYSCFG_MSR, msr); + 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 == 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_15_init, +}; + +static struct cpu_device_id cpu_table[] = { + { X86_VENDOR_AMD, 0x100F80}, /* HY-D0 */ + { X86_VENDOR_AMD, 0x100F90}, /* HY-D0 */ + { X86_VENDOR_AMD, 0x100F81}, /* HY-D1 */ + { X86_VENDOR_AMD, 0x100F91}, /* HY-D1 */ + { X86_VENDOR_AMD, 0x600f00 }, /* OR_A0x */ + { X86_VENDOR_AMD, 0x600f01 }, /* OR_A0x */ + { X86_VENDOR_AMD, 0x600f10 }, /* OR_B0x */ + { X86_VENDOR_AMD, 0x600f11 }, /* OR_B1x */ + { X86_VENDOR_AMD, 0x600f12 }, /* OR_B2x */ + { X86_VENDOR_AMD, 0x600f13 }, /* OR_B3x */ + { X86_VENDOR_AMD, 0x600f20 }, /* OR_C0x */ + { 0, 0 }, +}; + +static const struct cpu_driver model_15 __cpu_driver = { + .ops = &cpu_dev_ops, + .id_table = cpu_table, +}; |