| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpigen.h> |
| #include <acpi/acpi.h> |
| #include <assert.h> |
| #include <console/console.h> |
| #include <cpu/cpu.h> |
| #include <cpu/intel/microcode.h> |
| #include <cpu/intel/turbo.h> |
| #include <cpu/x86/lapic.h> |
| #include <cpu/x86/mp.h> |
| #include <cpu/x86/mtrr.h> |
| #include <intelblocks/cpulib.h> |
| #include <intelblocks/mp_init.h> |
| #include <soc/cpu.h> |
| #include <soc/msr.h> |
| #include <soc/soc_util.h> |
| #include "chip.h" |
| |
| static const void *microcode_patch; |
| |
| static const config_t *chip_config = NULL; |
| |
| static void xeon_configure_mca(void) |
| { |
| msr_t msr; |
| struct cpuid_result cpuid_regs; |
| |
| /* |
| * Check feature flag in CPUID.(EAX=1):EDX[7]==1 MCE |
| * and CPUID.(EAX=1):EDX[14]==1 MCA |
| */ |
| cpuid_regs = cpuid(1); |
| if ((cpuid_regs.edx & (1 << 7 | 1 << 14)) != (1 << 7 | 1 << 14)) |
| return; |
| |
| msr = rdmsr(IA32_MCG_CAP); |
| if (msr.lo & IA32_MCG_CAP_CTL_P_MASK) { |
| /* Enable all error logging */ |
| msr.lo = msr.hi = 0xffffffff; |
| wrmsr(IA32_MCG_CTL, msr); |
| } |
| |
| mca_configure(); |
| } |
| |
| |
| void get_microcode_info(const void **microcode, int *parallel) |
| { |
| *microcode = intel_mp_current_microcode(); |
| *parallel = 1; |
| } |
| |
| const void *intel_mp_current_microcode(void) |
| { |
| return microcode_patch; |
| } |
| |
| static void each_cpu_init(struct device *cpu) |
| { |
| msr_t msr; |
| |
| printk(BIOS_SPEW, "%s dev: %s, cpu: %d, apic_id: 0x%x\n", |
| __func__, dev_path(cpu), cpu_index(), cpu->path.apic.apic_id); |
| setup_lapic(); |
| |
| /* Enable Fast Strings */ |
| msr = rdmsr(IA32_MISC_ENABLE); |
| msr.lo |= FAST_STRINGS_ENABLE_BIT; |
| wrmsr(IA32_MISC_ENABLE, msr); |
| /* Enable Turbo */ |
| enable_turbo(); |
| |
| /* Enable speed step. */ |
| if (get_turbo_state() == TURBO_ENABLED) { |
| msr = rdmsr(IA32_MISC_ENABLE); |
| msr.lo |= SPEED_STEP_ENABLE_BIT; |
| wrmsr(IA32_MISC_ENABLE, msr); |
| } |
| |
| /* Clear out pending MCEs */ |
| xeon_configure_mca(); |
| } |
| |
| static struct device_operations cpu_dev_ops = { |
| .init = each_cpu_init, |
| }; |
| |
| static const struct cpu_device_id cpu_table[] = { |
| {X86_VENDOR_INTEL, CPUID_COOPERLAKE_SP_A0}, |
| {0, 0}, |
| }; |
| |
| static const struct cpu_driver driver __cpu_driver = { |
| .ops = &cpu_dev_ops, |
| .id_table = cpu_table, |
| }; |
| |
| static void set_max_turbo_freq(void) |
| { |
| msr_t msr, perf_ctl; |
| |
| FUNC_ENTER(); |
| perf_ctl.hi = 0; |
| |
| /* Check for configurable TDP option */ |
| if (get_turbo_state() == TURBO_ENABLED) { |
| msr = rdmsr(MSR_TURBO_RATIO_LIMIT); |
| perf_ctl.lo = (msr.lo & 0xff) << 8; |
| } else if (cpu_config_tdp_levels()) { |
| /* Set to nominal TDP ratio */ |
| msr = rdmsr(MSR_CONFIG_TDP_NOMINAL); |
| perf_ctl.lo = (msr.lo & 0xff) << 8; |
| } else { |
| /* Platform Info bits 15:8 give max ratio */ |
| msr = rdmsr(MSR_PLATFORM_INFO); |
| perf_ctl.lo = msr.lo & 0xff00; |
| } |
| wrmsr(IA32_PERF_CTL, perf_ctl); |
| |
| printk(BIOS_DEBUG, "cpu: frequency set to %d\n", |
| ((perf_ctl.lo >> 8) & 0xff) * CPU_BCLK); |
| FUNC_EXIT(); |
| } |
| |
| /* |
| * Do essential initialization tasks before APs can be fired up |
| */ |
| static void pre_mp_init(void) |
| { |
| x86_setup_mtrrs_with_detect(); |
| x86_mtrr_check(); |
| } |
| |
| static int get_thread_count(void) |
| { |
| unsigned int num_phys = 0, num_virts = 0; |
| |
| cpu_read_topology(&num_phys, &num_virts); |
| printk(BIOS_SPEW, "Detected %u cores and %u threads\n", num_phys, num_virts); |
| /* |
| * Currently we do not know a way to figure out how many CPUs we have total |
| * on multi-socketed. So we pretend all sockets are populated with CPUs with |
| * same thread/core fusing. |
| * TODO: properly figure out number of active sockets OR refactor MPinit code |
| * to remove requirements of having to know total number of CPUs in advance. |
| */ |
| return num_virts * CONFIG_MAX_SOCKET; |
| } |
| |
| static void post_mp_init(void) |
| { |
| /* Set Max Ratio */ |
| set_max_turbo_freq(); |
| } |
| |
| static const struct mp_ops mp_ops = { |
| .pre_mp_init = pre_mp_init, |
| .get_cpu_count = get_thread_count, |
| .get_microcode_info = get_microcode_info, |
| .post_mp_init = post_mp_init, |
| }; |
| |
| void cpx_init_cpus(struct device *dev) |
| { |
| microcode_patch = intel_microcode_find(); |
| |
| if (!microcode_patch) |
| printk(BIOS_ERR, "microcode not found in CBFS!\n"); |
| |
| intel_microcode_load_unlocked(microcode_patch); |
| |
| if (mp_init_with_smm(dev->link_list, &mp_ops) < 0) |
| printk(BIOS_ERR, "MP initialization failure.\n"); |
| |
| /* |
| * chip_config is used in cpu device callback. Other than cpu 0, |
| * rest of the CPU devices do not have chip_info updated. |
| */ |
| chip_config = dev->chip_info; |
| |
| /* update numa domain for all cpu devices */ |
| xeonsp_init_cpu_config(); |
| } |