| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #include <acpi/acpi.h> |
| #include <assert.h> |
| #include <console/console.h> |
| #include "chip.h" |
| #include <cpu/cpu.h> |
| #include <cpu/x86/mp.h> |
| #include <cpu/intel/microcode.h> |
| #include <cpu/intel/turbo.h> |
| #include <cpu/intel/common/common.h> |
| #include <cpu/x86/msr.h> |
| #include <cpu/x86/mtrr.h> |
| #include <cpu/x86/smm.h> |
| #include <cpu/intel/em64t100_save_state.h> |
| #include <cpu/intel/smm_reloc.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <fsp/api.h> |
| #include <intelblocks/cpulib.h> |
| #include <intelblocks/fast_spi.h> |
| #include <intelblocks/mp_init.h> |
| #include <intelblocks/msr.h> |
| #include <intelblocks/sgx.h> |
| #include <reg_script.h> |
| #include <soc/cpu.h> |
| #include <soc/iomap.h> |
| #include <soc/pci_devs.h> |
| #include <soc/pm.h> |
| #include <types.h> |
| |
| static const struct reg_script core_msr_script[] = { |
| #if !CONFIG(SOC_INTEL_GEMINILAKE) |
| /* Enable C-state and IO/MWAIT redirect */ |
| REG_MSR_WRITE(MSR_PKG_CST_CONFIG_CONTROL, |
| (PKG_C_STATE_LIMIT_C2_MASK | CORE_C_STATE_LIMIT_C10_MASK |
| | IO_MWAIT_REDIRECT_MASK | CST_CFG_LOCK_MASK)), |
| /* Power Management I/O base address for I/O trapping to C-states */ |
| REG_MSR_WRITE(MSR_PMG_IO_CAPTURE_BASE, |
| (ACPI_PMIO_CST_REG | (PMG_IO_BASE_CST_RNG_BLK_SIZE << 16))), |
| /* Disable support for MONITOR and MWAIT instructions */ |
| REG_MSR_RMW(IA32_MISC_ENABLE, ~MONITOR_MWAIT_DIS_MASK, 0), |
| #endif |
| /* Disable C1E */ |
| REG_MSR_RMW(MSR_POWER_CTL, ~POWER_CTL_C1E_MASK, 0), |
| REG_SCRIPT_END |
| }; |
| |
| bool cpu_soc_is_in_untrusted_mode(void) |
| { |
| msr_t msr; |
| |
| msr = rdmsr(MSR_POWER_MISC); |
| return !!(msr.lo & ENABLE_IA_UNTRUSTED); |
| } |
| |
| void soc_core_init(struct device *cpu) |
| { |
| /* Configure Core PRMRR for SGX. */ |
| if (CONFIG(SOC_INTEL_COMMON_BLOCK_SGX_ENABLE)) |
| prmrr_core_configure(); |
| |
| /* Clear out pending MCEs */ |
| /* TODO(adurbin): Some of these banks are core vs package |
| scope. For now every CPU clears every bank. */ |
| if (CONFIG(SOC_INTEL_COMMON_BLOCK_SGX_ENABLE) || acpi_get_sleep_type() == ACPI_S5) |
| mca_configure(); |
| |
| /* Set core MSRs */ |
| reg_script_run(core_msr_script); |
| |
| set_aesni_lock(); |
| |
| /* |
| * Enable ACPI PM timer emulation, which also lets microcode know |
| * location of ACPI_BASE_ADDRESS. This also enables other features |
| * implemented in microcode. |
| */ |
| enable_pm_timer_emulation(); |
| |
| /* Set Max Non-Turbo ratio if RAPL is disabled. */ |
| if (CONFIG(SOC_INTEL_DISABLE_POWER_LIMITS)) { |
| cpu_set_p_state_to_max_non_turbo_ratio(); |
| /* Disable speed step */ |
| cpu_set_eist(false); |
| } else if (CONFIG(SOC_INTEL_SET_MIN_CLOCK_RATIO)) { |
| cpu_set_p_state_to_min_clock_ratio(); |
| /* Disable speed step */ |
| cpu_set_eist(false); |
| } |
| } |
| |
| #if !CONFIG(SOC_INTEL_COMMON_BLOCK_CPU_MPINIT) |
| static void soc_init_core(struct device *cpu) |
| { |
| soc_core_init(cpu); |
| } |
| |
| static struct device_operations cpu_dev_ops = { |
| .init = soc_init_core, |
| }; |
| |
| static const struct cpu_device_id cpu_table[] = { |
| { X86_VENDOR_INTEL, CPUID_APOLLOLAKE_A0 }, |
| { X86_VENDOR_INTEL, CPUID_APOLLOLAKE_B0 }, |
| { X86_VENDOR_INTEL, CPUID_APOLLOLAKE_E0 }, |
| { X86_VENDOR_INTEL, CPUID_GLK_A0 }, |
| { X86_VENDOR_INTEL, CPUID_GLK_B0 }, |
| { X86_VENDOR_INTEL, CPUID_GLK_R0 }, |
| { 0, 0 }, |
| }; |
| |
| static const struct cpu_driver driver __cpu_driver = { |
| .ops = &cpu_dev_ops, |
| .id_table = cpu_table, |
| }; |
| #endif |
| |
| /* |
| * 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; |
| |
| /* |
| * Do essential initialization tasks before APs can be fired up. |
| * |
| * IF (CONFIG(SOC_INTEL_COMMON_BLOCK_CPU_MPINIT)) - |
| * Skip Pre MP init MTRR programming, as MTRRs are mirrored from BSP, |
| * that are set prior to ramstage. |
| * Real MTRRs are programmed after resource allocation. |
| * |
| * Do FSP loading before MP Init to ensure that the FSP component stored in |
| * external stage cache in TSEG does not flush off due to SMM relocation |
| * during MP Init stage. |
| * |
| * ELSE - |
| * Enable MTRRs on the BSP. This creates the MTRR solution that the |
| * APs will use. Otherwise APs will try to apply the incomplete solution |
| * as the BSP is calculating it. |
| */ |
| static void pre_mp_init(void) |
| { |
| if (CONFIG(SOC_INTEL_COMMON_BLOCK_CPU_MPINIT)) { |
| fsps_load(); |
| return; |
| } |
| x86_setup_mtrrs_with_detect(); |
| x86_mtrr_check(); |
| |
| } |
| |
| #if !CONFIG(SOC_INTEL_COMMON_BLOCK_CPU_MPINIT) |
| static void read_cpu_topology(unsigned int *num_phys, unsigned int *num_virt) |
| { |
| msr_t msr; |
| msr = rdmsr(MSR_CORE_THREAD_COUNT); |
| *num_virt = (msr.lo >> 0) & 0xffff; |
| *num_phys = (msr.lo >> 16) & 0xffff; |
| } |
| |
| /* Find CPU topology */ |
| int get_cpu_count(void) |
| { |
| unsigned int num_virt_cores, num_phys_cores; |
| |
| read_cpu_topology(&num_phys_cores, &num_virt_cores); |
| |
| printk(BIOS_DEBUG, "Detected %u core, %u thread CPU.\n", |
| num_phys_cores, num_virt_cores); |
| |
| return num_virt_cores; |
| } |
| |
| void get_microcode_info(const void **microcode, int *parallel) |
| { |
| *microcode = intel_microcode_find(); |
| *parallel = 1; |
| |
| /* Make sure BSP is using the microcode from cbfs */ |
| intel_microcode_load_unlocked(*microcode); |
| } |
| #endif |
| |
| static void get_smm_info(uintptr_t *perm_smbase, size_t *perm_smsize, |
| size_t *smm_save_state_size) |
| { |
| uintptr_t smm_base; |
| size_t smm_size; |
| uintptr_t handler_base; |
| size_t handler_size; |
| |
| /* All range registers are aligned to 4KiB */ |
| const uint32_t rmask = ~((1 << 12) - 1); |
| |
| /* Initialize global tracking state. */ |
| smm_region(&smm_base, &smm_size); |
| smm_subregion(SMM_SUBREGION_HANDLER, &handler_base, &handler_size); |
| |
| relo_attrs.smbase = smm_base; |
| relo_attrs.smrr_base = relo_attrs.smbase | MTRR_TYPE_WRBACK; |
| relo_attrs.smrr_mask = ~(smm_size - 1) & rmask; |
| relo_attrs.smrr_mask |= MTRR_PHYS_MASK_VALID; |
| |
| *perm_smbase = handler_base; |
| *perm_smsize = handler_size; |
| *smm_save_state_size = sizeof(em64t100_smm_state_save_area_t); |
| } |
| |
| 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(IA32_SMRR_PHYS_BASE, smrr); |
| smrr.lo = relo_attrs.smrr_mask; |
| smrr.hi = 0; |
| wrmsr(IA32_SMRR_PHYS_MASK, smrr); |
| smm_state = (void *)(SMM_EM64T100_SAVE_STATE_OFFSET + curr_smbase); |
| smm_state->smbase = staggered_smbase; |
| } |
| /* |
| * CPU initialization recipe |
| * |
| * Note that no microcode update is passed to the init function. CSE updates |
| * the microcode on all cores before releasing them from reset. That means that |
| * the BSP and all APs will come up with the same microcode revision. |
| */ |
| |
| static void post_mp_init(void) |
| { |
| global_smi_enable(); |
| |
| if (CONFIG(SOC_INTEL_COMMON_BLOCK_SGX_ENABLE)) |
| mp_run_on_all_cpus(sgx_configure, NULL); |
| } |
| |
| 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, |
| .relocation_handler = relocation_handler, |
| .post_mp_init = post_mp_init, |
| }; |
| |
| void soc_init_cpus(struct bus *cpu_bus) |
| { |
| /* Clear for take-off */ |
| /* TODO: Handle mp_init_with_smm failure? */ |
| mp_init_with_smm(cpu_bus, &mp_ops); |
| } |
| |
| void apollolake_init_cpus(struct device *dev) |
| { |
| if (CONFIG(SOC_INTEL_COMMON_BLOCK_CPU_MPINIT)) |
| return; |
| soc_init_cpus(dev->link_list); |
| |
| /* Temporarily cache the memory-mapped boot media. */ |
| if (CONFIG(BOOT_DEVICE_MEMORY_MAPPED) && |
| CONFIG(BOOT_DEVICE_SPI_FLASH)) |
| fast_spi_cache_bios_region(); |
| } |