| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2013 Google Inc. |
| * Copyright (C) 2014 Sage Electronic Engineering, LLC. |
| * |
| * 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 <stdlib.h> |
| #include <console/console.h> |
| #include <cpu/cpu.h> |
| #include <cpu/intel/microcode.h> |
| #include <cpu/intel/turbo.h> |
| #include <cpu/x86/cache.h> |
| #include <cpu/x86/lapic.h> |
| #include <cpu/x86/mp.h> |
| #include <cpu/x86/msr.h> |
| #include <cpu/x86/mtrr.h> |
| #include <cpu/x86/smm.h> |
| #include <reg_script.h> |
| |
| #include <soc/msr.h> |
| #include <soc/pattrs.h> |
| #include <soc/ramstage.h> |
| #include <soc/smm.h> |
| |
| /* Core level MSRs */ |
| static const struct reg_script core_msr_script[] = { |
| /* Dynamic L2 shrink enable and threshold */ |
| REG_MSR_RMW(MSR_PMG_CST_CONFIG_CONTROL, ~0x3f000f, 0xe0008), |
| /* Disable C1E */ |
| REG_MSR_RMW(MSR_POWER_CTL, ~0x2, 0), |
| REG_MSR_OR(MSR_POWER_MISC, 0x44), |
| REG_SCRIPT_END |
| }; |
| |
| static void baytrail_core_init(device_t cpu) |
| { |
| printk(BIOS_DEBUG, "Init BayTrail core.\n"); |
| |
| /* On bay trail the turbo disable bit is actually scoped at building |
| * block level -- not package. For non-bsp cores that are within a |
| * building block enable turbo. The cores within the BSP's building |
| * block will just see it already enabled and move on. */ |
| if (lapicid()) |
| enable_turbo(); |
| |
| /* Set core MSRs */ |
| reg_script_run(core_msr_script); |
| |
| /* Set this core to max frequency ratio */ |
| set_max_freq(); |
| } |
| |
| static struct device_operations cpu_dev_ops = { |
| .init = baytrail_core_init, |
| }; |
| |
| static struct cpu_device_id cpu_table[] = { |
| { X86_VENDOR_INTEL, 0x30671 }, |
| { X86_VENDOR_INTEL, 0x30672 }, |
| { X86_VENDOR_INTEL, 0x30673 }, |
| { X86_VENDOR_INTEL, 0x30678 }, |
| { X86_VENDOR_INTEL, 0x30679 }, |
| { 0, 0 }, |
| }; |
| |
| static const struct cpu_driver driver __cpu_driver = { |
| .ops = &cpu_dev_ops, |
| .id_table = cpu_table, |
| }; |
| |
| /* |
| * MP and SMM loading initialization. |
| */ |
| |
| struct smm_relocation_attrs { |
| uint32_t smbase; |
| uint32_t smrr_base; |
| uint32_t smrr_mask; |
| }; |
| |
| static struct smm_relocation_attrs relo_attrs; |
| |
| static void pre_mp_init(void) |
| { |
| x86_mtrr_check(); |
| |
| /* Enable the local CPU apics */ |
| setup_lapic(); |
| } |
| |
| static int get_cpu_count(void) |
| { |
| const struct pattrs *pattrs = pattrs_get(); |
| |
| return pattrs->num_cpus; |
| } |
| |
| static void get_smm_info(uintptr_t *perm_smbase, size_t *perm_smsize, |
| size_t *smm_save_state_size) |
| { |
| /* All range registers are aligned to 4KiB */ |
| const uint32_t rmask = ~((1 << 12) - 1); |
| |
| /* Initialize global tracking state. */ |
| relo_attrs.smbase = (uint32_t)smm_region_start(); |
| relo_attrs.smrr_base = relo_attrs.smbase | MTRR_TYPE_WRBACK; |
| relo_attrs.smrr_mask = ~(smm_region_size() - 1) & rmask; |
| relo_attrs.smrr_mask |= MTRR_PHYS_MASK_VALID; |
| |
| *perm_smbase = relo_attrs.smbase; |
| *perm_smsize = smm_region_size() - CONFIG_SMM_RESERVED_SIZE; |
| *smm_save_state_size = sizeof(em64t100_smm_state_save_area_t); |
| } |
| |
| /* The APIC id space on Bay Trail is sparse. Each id is separated by 2. */ |
| static int adjust_apic_id(int index, int apic_id) |
| { |
| return 2 * index; |
| } |
| |
| static void get_microcode_info(const void **microcode, int *parallel) |
| { |
| const struct pattrs *pattrs = pattrs_get(); |
| |
| *microcode = pattrs->microcode_patch; |
| *parallel = 1; |
| } |
| |
| static void relocation_handler(int cpu, uintptr_t curr_smbase, |
| uintptr_t staggered_smbase) |
| { |
| msr_t smrr; |
| em64t100_smm_state_save_area_t *smm_state; |
| |
| /* Set up SMRR. */ |
| smrr.lo = relo_attrs.smrr_base; |
| smrr.hi = 0; |
| wrmsr(SMRR_PHYS_BASE, smrr); |
| smrr.lo = relo_attrs.smrr_mask; |
| smrr.hi = 0; |
| wrmsr(SMRR_PHYS_MASK, smrr); |
| |
| smm_state = (void *)(SMM_EM64T100_SAVE_STATE_OFFSET + curr_smbase); |
| smm_state->smbase = staggered_smbase; |
| } |
| |
| static void enable_smis(void) |
| { |
| if (IS_ENABLED(CONFIG_HAVE_SMI_HANDLER)) |
| southcluster_smm_enable_smi(); |
| } |
| |
| static const struct mp_ops mp_ops = { |
| .pre_mp_init = pre_mp_init, |
| .get_cpu_count = get_cpu_count, |
| .get_smm_info = get_smm_info, |
| .get_microcode_info = get_microcode_info, |
| .adjust_cpu_apic_entry = adjust_apic_id, |
| .pre_mp_smm_init = southcluster_smm_clear_state, |
| .relocation_handler = relocation_handler, |
| .post_mp_init = enable_smis, |
| }; |
| |
| void baytrail_init_cpus(device_t dev) |
| { |
| struct bus *cpu_bus = dev->link_list; |
| |
| if (mp_init_with_smm(cpu_bus, &mp_ops)) { |
| printk(BIOS_ERR, "MP initialization failure.\n"); |
| } |
| } |