/* SPDX-License-Identifier: GPL-2.0-only */ /* * This file is created based on Intel Tiger Lake Processor CPU Datasheet * Document number: 575683 * Chapter number: 15 */ #include <arch/cpu.h> #include <console/console.h> #include <device/pci.h> #include <cpu/x86/lapic.h> #include <cpu/x86/mp.h> #include <cpu/x86/msr.h> #include <cpu/intel/smm_reloc.h> #include <cpu/intel/turbo.h> #include <cpu/intel/common/common.h> #include <fsp/api.h> #include <intelblocks/cpulib.h> #include <intelblocks/mp_init.h> #include <intelblocks/msr.h> #include <romstage_handoff.h> #include <soc/cpu.h> #include <soc/msr.h> #include <soc/pci_devs.h> #include <soc/soc_chip.h> static void soc_fsp_load(void) { fsps_load(romstage_handoff_is_resume()); } static void configure_misc(void) { msr_t msr; config_t *conf = config_of_soc(); msr = rdmsr(IA32_MISC_ENABLE); msr.lo |= (1 << 0); /* Fast String enable */ msr.lo |= (1 << 3); /* TM1/TM2/EMTTM enable */ wrmsr(IA32_MISC_ENABLE, msr); /* Set EIST status */ cpu_set_eist(conf->eist_enable); /* Disable Thermal interrupts */ msr.lo = 0; msr.hi = 0; wrmsr(IA32_THERM_INTERRUPT, msr); /* Enable package critical interrupt only */ msr.lo = 1 << 4; msr.hi = 0; wrmsr(IA32_PACKAGE_THERM_INTERRUPT, msr); /* Enable PROCHOT */ msr = rdmsr(MSR_POWER_CTL); msr.lo |= (1 << 0); /* Enable Bi-directional PROCHOT as an input*/ msr.lo |= (1 << 23); /* Lock it */ wrmsr(MSR_POWER_CTL, msr); } /* All CPUs including BSP will run the following function. */ void soc_core_init(struct device *cpu) { /* Clear out pending MCEs */ /* TODO(adurbin): This should only be done on a cold boot. Also, some * of these banks are core vs package scope. For now every CPU clears * every bank. */ mca_configure(); /* Enable the local CPU apics */ enable_lapic_tpr(); setup_lapic(); /* Configure Enhanced SpeedStep and Thermal Sensors */ configure_misc(); enable_pm_timer_emulation(); /* Enable Direct Cache Access */ configure_dca_cap(); /* Set energy policy */ set_energy_perf_bias(ENERGY_POLICY_NORMAL); /* Enable Turbo */ enable_turbo(); } static void per_cpu_smm_trigger(void) { /* Relocate the SMM handler. */ smm_relocate(); } static void post_mp_init(void) { /* Set Max Ratio */ cpu_set_max_ratio(); /* * Now that all APs have been relocated as well as the BSP let SMIs * start flowing. */ global_smi_enable(); } static const struct mp_ops mp_ops = { /* * Skip Pre MP init MTRR programming as MTRRs are mirrored from BSP, * that are set prior to ramstage. * Real MTRRs programming are being done after resource allocation. */ .pre_mp_init = soc_fsp_load, .get_cpu_count = get_cpu_count, .get_smm_info = smm_info, .get_microcode_info = get_microcode_info, .pre_mp_smm_init = smm_initialize, .per_cpu_smm_trigger = per_cpu_smm_trigger, .relocation_handler = smm_relocation_handler, .post_mp_init = post_mp_init, }; void soc_init_cpus(struct bus *cpu_bus) { if (mp_init_with_smm(cpu_bus, &mp_ops)) printk(BIOS_ERR, "MP initialization failure.\n"); /* Thermal throttle activation offset */ configure_tcc_thermal_target(); }