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/* SPDX-License-Identifier: GPL-2.0-only */
#include <acpi/acpigen.h>
#include <acpi/acpi.h>
#include <assert.h>
#include <console/console.h>
#include <console/debug.h>
#include <cpu/cpu.h>
#include <cpu/intel/common/common.h>
#include <cpu/intel/em64t101_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/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 <soc/smmrelocate.h>
#include <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();
}
/*
* On server platforms the FIT mechanism only updates the microcode on
* the BSP. Loading MCU on AP in parallel seems to fail in 10% of the cases
* so do it serialized.
*/
void get_microcode_info(const void **microcode, int *parallel)
{
*microcode = intel_microcode_find();
*parallel = 0;
}
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();
/*
* Set HWP base feature, EPP reg enumeration, lock thermal and msr
* This is package level MSR. Need to check if it updates correctly on
* multi-socket platform.
*/
msr = rdmsr(MSR_MISC_PWR_MGMT);
if (!(msr.lo & LOCK_MISC_PWR_MGMT_MSR)) { /* if already locked skip update */
msr.lo = (HWP_ENUM_ENABLE | HWP_EPP_ENUM_ENABLE | LOCK_MISC_PWR_MGMT_MSR |
LOCK_THERM_INT);
wrmsr(MSR_MISC_PWR_MGMT, msr);
}
/* 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();
/* Enable Vmx */
set_vmx_and_lock();
}
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},
{X86_VENDOR_INTEL, CPUID_COOPERLAKE_SP_A1},
{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) * CONFIG_CPU_BCLK_MHZ);
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();
if (CONFIG(HAVE_SMI_HANDLER))
global_smi_enable();
}
static const struct mp_ops mp_ops = {
.pre_mp_init = pre_mp_init,
.get_cpu_count = get_thread_count,
.get_smm_info = get_smm_info,
.pre_mp_smm_init = smm_initialize,
.relocation_handler = smm_relocation_handler,
.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();
}
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