/* SPDX-License-Identifier: GPL-2.0-only */ #include <console/console.h> #include <cpu/cpu.h> #include <cpu/intel/common/common.h> #include <cpu/intel/em64t100_save_state.h> #include <cpu/intel/microcode.h> #include <cpu/intel/smm_reloc.h> #include <cpu/intel/turbo.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/iosf.h> #include <soc/msr.h> #include <soc/pattrs.h> #include <soc/ramstage.h> /* Core level MSRs */ static const struct reg_script core_msr_script[] = { /* Dynamic L2 shrink enable and threshold, clear SINGLE_PCTL bit 11 */ REG_MSR_RMW(MSR_PKG_CST_CONFIG_CONTROL, ~0x3f080f, 0xe0008), REG_MSR_RMW(MSR_POWER_MISC, ~(ENABLE_ULFM_AUTOCM_MASK | ENABLE_INDP_AUTOCM_MASK), 0), /* Disable C1E */ REG_MSR_RMW(MSR_POWER_CTL, ~0x2, 0), REG_MSR_OR(MSR_POWER_MISC, 0x44), REG_SCRIPT_END }; static void soc_core_init(struct device *cpu) { printk(BIOS_DEBUG, "Init BayTrail core.\n"); /* * 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 virtualization based on Kconfig option */ set_vmx_and_lock(); /* 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 = soc_core_init, }; static const struct cpu_device_id cpu_table[] = { { 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. */ /* Package level MSRs */ static const struct reg_script package_msr_script[] = { /* Set Package TDP to ~7W */ REG_MSR_WRITE(MSR_PKG_POWER_LIMIT, 0x3880fa), REG_MSR_RMW(MSR_PP1_POWER_LIMIT, ~(0x7f << 17), 0), REG_MSR_WRITE(MSR_PKG_TURBO_CFG1, 0x702), REG_MSR_WRITE(MSR_CPU_TURBO_WKLD_CFG1, 0x200b), REG_MSR_WRITE(MSR_CPU_TURBO_WKLD_CFG2, 0), REG_MSR_WRITE(MSR_CPU_THERM_CFG1, 0x00000305), REG_MSR_WRITE(MSR_CPU_THERM_CFG2, 0x0405500d), REG_MSR_WRITE(MSR_CPU_THERM_SENS_CFG, 0x27), REG_SCRIPT_END }; static void pre_mp_init(void) { uint32_t bsmrwac; /* Set up MTRRs based on physical address size. */ x86_setup_mtrrs_with_detect(); x86_mtrr_check(); /* * Configure the BUNIT to allow dirty cache line evictions in non-SMM mode for lines * that were dirtied while in SMM mode. Otherwise the writes would be silently dropped. */ bsmrwac = iosf_bunit_read(BUNIT_SMRWAC) | SAI_IA_UNTRUSTED; iosf_bunit_write(BUNIT_SMRWAC, bsmrwac); /* Set package MSRs */ reg_script_run(package_msr_script); /* Enable Turbo Mode on BSP and siblings of the BSP's building block. */ enable_turbo(); } static int get_cpu_count(void) { const struct pattrs *pattrs = pattrs_get(); return pattrs->num_cpus; } static void fill_in_relocation_params(struct smm_relocation_params *params) { uintptr_t tseg_base; size_t tseg_size; /* All range registers are aligned to 4KiB */ const u32 rmask = ~((1 << 12) - 1); smm_region(&tseg_base, &tseg_size); /* SMRR has 32-bits of valid address aligned to 4KiB. */ params->smrr_base.lo = (tseg_base & rmask) | MTRR_TYPE_WRBACK; params->smrr_base.hi = 0; params->smrr_mask.lo = (~(tseg_size - 1) & rmask) | MTRR_PHYS_MASK_VALID; params->smrr_mask.hi = 0; } static void get_smm_info(uintptr_t *perm_smbase, size_t *perm_smsize, size_t *smm_save_state_size) { printk(BIOS_DEBUG, "Setting up SMI for CPU\n"); fill_in_relocation_params(&smm_reloc_params); smm_subregion(SMM_SUBREGION_HANDLER, perm_smbase, perm_smsize); *smm_save_state_size = sizeof(em64t100_smm_state_save_area_t); } static void get_microcode_info(const void **microcode, int *parallel) { const struct pattrs *pattrs = pattrs_get(); *microcode = pattrs->microcode_patch; *parallel = 1; } static void per_cpu_smm_trigger(void) { const struct pattrs *pattrs = pattrs_get(); /* Relocate SMM space. */ smm_initiate_relocation(); /* Load microcode after SMM relocation. */ intel_microcode_load_unlocked(pattrs->microcode_patch); } static void relocation_handler(int cpu, uintptr_t curr_smbase, uintptr_t staggered_smbase) { struct smm_relocation_params *relo_params = &smm_reloc_params; em64t100_smm_state_save_area_t *smm_state; /* Set up SMRR. */ wrmsr(IA32_SMRR_PHYS_BASE, relo_params->smrr_base); wrmsr(IA32_SMRR_PHYS_MASK, relo_params->smrr_mask); smm_state = (void *)(SMM_EM64T100_SAVE_STATE_OFFSET + curr_smbase); smm_state->smbase = staggered_smbase; } static void post_mp_init(void) { global_smi_enable(); } 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, .pre_mp_smm_init = smm_southbridge_clear_state, .per_cpu_smm_trigger = per_cpu_smm_trigger, .relocation_handler = relocation_handler, .post_mp_init = post_mp_init, }; void baytrail_init_cpus(struct device *dev) { struct bus *cpu_bus = dev->link_list; if (mp_init_with_smm(cpu_bus, &mp_ops)) printk(BIOS_ERR, "MP initialization failure.\n"); }