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Diffstat (limited to 'src/soc/intel/broadwell/cpu/cpu.c')
-rw-r--r--src/soc/intel/broadwell/cpu/cpu.c642
1 files changed, 642 insertions, 0 deletions
diff --git a/src/soc/intel/broadwell/cpu/cpu.c b/src/soc/intel/broadwell/cpu/cpu.c
new file mode 100644
index 0000000000..72efa3dc81
--- /dev/null
+++ b/src/soc/intel/broadwell/cpu/cpu.c
@@ -0,0 +1,642 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <arch/cpu.h>
+#include <cpu/cpu.h>
+#include <cpu/x86/mtrr.h>
+#include <cpu/x86/msr.h>
+#include <cpu/x86/lapic.h>
+#include <cpu/x86/mp.h>
+#include <cpu/intel/microcode.h>
+#include <cpu/intel/smm_reloc.h>
+#include <cpu/intel/speedstep.h>
+#include <cpu/intel/turbo.h>
+#include <cpu/x86/name.h>
+#include <delay.h>
+#include <soc/cpu.h>
+#include <soc/msr.h>
+#include <soc/pci_devs.h>
+#include <soc/ramstage.h>
+#include <soc/rcba.h>
+#include <soc/systemagent.h>
+#include <soc/intel/broadwell/chip.h>
+#include <cpu/intel/common/common.h>
+
+/* Convert time in seconds to POWER_LIMIT_1_TIME MSR value */
+static const u8 power_limit_time_sec_to_msr[] = {
+ [0] = 0x00,
+ [1] = 0x0a,
+ [2] = 0x0b,
+ [3] = 0x4b,
+ [4] = 0x0c,
+ [5] = 0x2c,
+ [6] = 0x4c,
+ [7] = 0x6c,
+ [8] = 0x0d,
+ [10] = 0x2d,
+ [12] = 0x4d,
+ [14] = 0x6d,
+ [16] = 0x0e,
+ [20] = 0x2e,
+ [24] = 0x4e,
+ [28] = 0x6e,
+ [32] = 0x0f,
+ [40] = 0x2f,
+ [48] = 0x4f,
+ [56] = 0x6f,
+ [64] = 0x10,
+ [80] = 0x30,
+ [96] = 0x50,
+ [112] = 0x70,
+ [128] = 0x11,
+};
+
+/* Convert POWER_LIMIT_1_TIME MSR value to seconds */
+static const u8 power_limit_time_msr_to_sec[] = {
+ [0x00] = 0,
+ [0x0a] = 1,
+ [0x0b] = 2,
+ [0x4b] = 3,
+ [0x0c] = 4,
+ [0x2c] = 5,
+ [0x4c] = 6,
+ [0x6c] = 7,
+ [0x0d] = 8,
+ [0x2d] = 10,
+ [0x4d] = 12,
+ [0x6d] = 14,
+ [0x0e] = 16,
+ [0x2e] = 20,
+ [0x4e] = 24,
+ [0x6e] = 28,
+ [0x0f] = 32,
+ [0x2f] = 40,
+ [0x4f] = 48,
+ [0x6f] = 56,
+ [0x10] = 64,
+ [0x30] = 80,
+ [0x50] = 96,
+ [0x70] = 112,
+ [0x11] = 128,
+};
+
+/* The core 100MHz BCLK is disabled in deeper c-states. One needs to calibrate
+ * the 100MHz BCLK against the 24MHz BCLK to restore the clocks properly
+ * when a core is woken up. */
+static int pcode_ready(void)
+{
+ int wait_count;
+ const int delay_step = 10;
+
+ wait_count = 0;
+ do {
+ if (!(MCHBAR32(BIOS_MAILBOX_INTERFACE) & MAILBOX_RUN_BUSY))
+ return 0;
+ wait_count += delay_step;
+ udelay(delay_step);
+ } while (wait_count < 1000);
+
+ return -1;
+}
+
+static void calibrate_24mhz_bclk(void)
+{
+ int err_code;
+
+ if (pcode_ready() < 0) {
+ printk(BIOS_ERR, "PCODE: mailbox timeout on wait ready.\n");
+ return;
+ }
+
+ /* A non-zero value initiates the PCODE calibration. */
+ MCHBAR32(BIOS_MAILBOX_DATA) = ~0;
+ MCHBAR32(BIOS_MAILBOX_INTERFACE) =
+ MAILBOX_RUN_BUSY | MAILBOX_BIOS_CMD_FSM_MEASURE_INTVL;
+
+ if (pcode_ready() < 0) {
+ printk(BIOS_ERR, "PCODE: mailbox timeout on completion.\n");
+ return;
+ }
+
+ err_code = MCHBAR32(BIOS_MAILBOX_INTERFACE) & 0xff;
+
+ printk(BIOS_DEBUG, "PCODE: 24MHz BCLK calibration response: %d\n",
+ err_code);
+
+ /* Read the calibrated value. */
+ MCHBAR32(BIOS_MAILBOX_INTERFACE) =
+ MAILBOX_RUN_BUSY | MAILBOX_BIOS_CMD_READ_CALIBRATION;
+
+ if (pcode_ready() < 0) {
+ printk(BIOS_ERR, "PCODE: mailbox timeout on read.\n");
+ return;
+ }
+
+ printk(BIOS_DEBUG, "PCODE: 24MHz BCLK calibration value: 0x%08x\n",
+ MCHBAR32(BIOS_MAILBOX_DATA));
+}
+
+static u32 pcode_mailbox_read(u32 command)
+{
+ if (pcode_ready() < 0) {
+ printk(BIOS_ERR, "PCODE: mailbox timeout on wait ready.\n");
+ return 0;
+ }
+
+ /* Send command and start transaction */
+ MCHBAR32(BIOS_MAILBOX_INTERFACE) = command | MAILBOX_RUN_BUSY;
+
+ if (pcode_ready() < 0) {
+ printk(BIOS_ERR, "PCODE: mailbox timeout on completion.\n");
+ return 0;
+ }
+
+ /* Read mailbox */
+ return MCHBAR32(BIOS_MAILBOX_DATA);
+}
+
+static int pcode_mailbox_write(u32 command, u32 data)
+{
+ if (pcode_ready() < 0) {
+ printk(BIOS_ERR, "PCODE: mailbox timeout on wait ready.\n");
+ return -1;
+ }
+
+ MCHBAR32(BIOS_MAILBOX_DATA) = data;
+
+ /* Send command and start transaction */
+ MCHBAR32(BIOS_MAILBOX_INTERFACE) = command | MAILBOX_RUN_BUSY;
+
+ if (pcode_ready() < 0) {
+ printk(BIOS_ERR, "PCODE: mailbox timeout on completion.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static void initialize_vr_config(void)
+{
+ config_t *conf = config_of_soc();
+ msr_t msr;
+
+ printk(BIOS_DEBUG, "Initializing VR config.\n");
+
+ /* Configure VR_CURRENT_CONFIG. */
+ msr = rdmsr(MSR_VR_CURRENT_CONFIG);
+ /* Preserve bits 63 and 62. Bit 62 is PSI4 enable, but it is only valid
+ * on ULT systems. */
+ msr.hi &= 0xc0000000;
+ msr.hi |= (0x01 << (52 - 32)); /* PSI3 threshold - 1A. */
+ msr.hi |= (0x05 << (42 - 32)); /* PSI2 threshold - 5A. */
+ msr.hi |= (0x14 << (32 - 32)); /* PSI1 threshold - 20A. */
+ msr.hi |= (1 << (62 - 32)); /* Enable PSI4 */
+ /* Leave the max instantaneous current limit (12:0) to default. */
+ wrmsr(MSR_VR_CURRENT_CONFIG, msr);
+
+ /* Configure VR_MISC_CONFIG MSR. */
+ msr = rdmsr(MSR_VR_MISC_CONFIG);
+ /* Set the IOUT_SLOPE scalar applied to dIout in U10.1.9 format. */
+ msr.hi &= ~(0x3ff << (40 - 32));
+ msr.hi |= (0x200 << (40 - 32)); /* 1.0 */
+ /* Set IOUT_OFFSET to 0. */
+ msr.hi &= ~0xff;
+ /* Set entry ramp rate to slow. */
+ msr.hi &= ~(1 << (51 - 32));
+ /* Enable decay mode on C-state entry. */
+ msr.hi |= (1 << (52 - 32));
+ /* Set the slow ramp rate */
+ msr.hi &= ~(0x3 << (53 - 32));
+ /* Configure the C-state exit ramp rate. */
+ if (conf->vr_slow_ramp_rate_enable) {
+ /* Configured slow ramp rate. */
+ msr.hi |= ((conf->vr_slow_ramp_rate_set & 0x3) << (53 - 32));
+ /* Set exit ramp rate to slow. */
+ msr.hi &= ~(1 << (50 - 32));
+ } else {
+ /* Fast ramp rate / 4. */
+ msr.hi |= (0x01 << (53 - 32));
+ /* Set exit ramp rate to fast. */
+ msr.hi |= (1 << (50 - 32));
+ }
+ /* Set MIN_VID (31:24) to allow CPU to have full control. */
+ msr.lo &= ~0xff000000;
+ msr.lo |= (conf->vr_cpu_min_vid & 0xff) << 24;
+ wrmsr(MSR_VR_MISC_CONFIG, msr);
+
+ /* Configure VR_MISC_CONFIG2 MSR. */
+ msr = rdmsr(MSR_VR_MISC_CONFIG2);
+ msr.lo &= ~0xffff;
+ /* Allow CPU to control minimum voltage completely (15:8) and
+ * set the fast ramp voltage in 10mV steps. */
+ if (cpu_family_model() == BROADWELL_FAMILY_ULT)
+ msr.lo |= 0x006a; /* 1.56V */
+ else
+ msr.lo |= 0x006f; /* 1.60V */
+ wrmsr(MSR_VR_MISC_CONFIG2, msr);
+
+ /* Set C9/C10 VCC Min */
+ pcode_mailbox_write(MAILBOX_BIOS_CMD_WRITE_C9C10_VOLTAGE, 0x1f1f);
+}
+
+static void configure_pch_power_sharing(void)
+{
+ u32 pch_power, pch_power_ext, pmsync, pmsync2;
+ int i;
+
+ /* Read PCH Power levels from PCODE */
+ pch_power = pcode_mailbox_read(MAILBOX_BIOS_CMD_READ_PCH_POWER);
+ pch_power_ext = pcode_mailbox_read(MAILBOX_BIOS_CMD_READ_PCH_POWER_EXT);
+
+ printk(BIOS_INFO, "PCH Power: PCODE Levels 0x%08x 0x%08x\n",
+ pch_power, pch_power_ext);
+
+ pmsync = RCBA32(PMSYNC_CONFIG);
+ pmsync2 = RCBA32(PMSYNC_CONFIG2);
+
+ /* Program PMSYNC_TPR_CONFIG PCH power limit values
+ * pmsync[0:4] = mailbox[0:5]
+ * pmsync[8:12] = mailbox[6:11]
+ * pmsync[16:20] = mailbox[12:17]
+ */
+ for (i = 0; i < 3; i++) {
+ u32 level = pch_power & 0x3f;
+ pch_power >>= 6;
+ pmsync &= ~(0x1f << (i * 8));
+ pmsync |= (level & 0x1f) << (i * 8);
+ }
+ RCBA32(PMSYNC_CONFIG) = pmsync;
+
+ /* Program PMSYNC_TPR_CONFIG2 Extended PCH power limit values
+ * pmsync2[0:4] = mailbox[23:18]
+ * pmsync2[8:12] = mailbox_ext[6:11]
+ * pmsync2[16:20] = mailbox_ext[12:17]
+ * pmsync2[24:28] = mailbox_ext[18:22]
+ */
+ pmsync2 &= ~0x1f;
+ pmsync2 |= pch_power & 0x1f;
+
+ for (i = 1; i < 4; i++) {
+ u32 level = pch_power_ext & 0x3f;
+ pch_power_ext >>= 6;
+ pmsync2 &= ~(0x1f << (i * 8));
+ pmsync2 |= (level & 0x1f) << (i * 8);
+ }
+ RCBA32(PMSYNC_CONFIG2) = pmsync2;
+}
+
+int cpu_config_tdp_levels(void)
+{
+ msr_t platform_info;
+
+ /* Bits 34:33 indicate how many levels supported */
+ platform_info = rdmsr(MSR_PLATFORM_INFO);
+ return (platform_info.hi >> 1) & 3;
+}
+
+/*
+ * Configure processor power limits if possible
+ * This must be done AFTER set of BIOS_RESET_CPL
+ */
+void set_power_limits(u8 power_limit_1_time)
+{
+ msr_t msr = rdmsr(MSR_PLATFORM_INFO);
+ msr_t limit;
+ unsigned int power_unit;
+ unsigned int tdp, min_power, max_power, max_time;
+ u8 power_limit_1_val;
+
+ if (power_limit_1_time >= ARRAY_SIZE(power_limit_time_sec_to_msr))
+ power_limit_1_time = ARRAY_SIZE(power_limit_time_sec_to_msr) - 1;
+
+ if (!(msr.lo & PLATFORM_INFO_SET_TDP))
+ return;
+
+ /* Get units */
+ msr = rdmsr(MSR_PKG_POWER_SKU_UNIT);
+ power_unit = 2 << ((msr.lo & 0xf) - 1);
+
+ /* Get power defaults for this SKU */
+ msr = rdmsr(MSR_PKG_POWER_SKU);
+ tdp = msr.lo & 0x7fff;
+ min_power = (msr.lo >> 16) & 0x7fff;
+ max_power = msr.hi & 0x7fff;
+ max_time = (msr.hi >> 16) & 0x7f;
+
+ printk(BIOS_DEBUG, "CPU TDP: %u Watts\n", tdp / power_unit);
+
+ if (power_limit_time_msr_to_sec[max_time] > power_limit_1_time)
+ power_limit_1_time = power_limit_time_msr_to_sec[max_time];
+
+ if (min_power > 0 && tdp < min_power)
+ tdp = min_power;
+
+ if (max_power > 0 && tdp > max_power)
+ tdp = max_power;
+
+ power_limit_1_val = power_limit_time_sec_to_msr[power_limit_1_time];
+
+ /* Set long term power limit to TDP */
+ limit.lo = 0;
+ limit.lo |= tdp & PKG_POWER_LIMIT_MASK;
+ limit.lo |= PKG_POWER_LIMIT_EN;
+ limit.lo |= (power_limit_1_val & PKG_POWER_LIMIT_TIME_MASK) <<
+ PKG_POWER_LIMIT_TIME_SHIFT;
+
+ /* Set short term power limit to 1.25 * TDP */
+ limit.hi = 0;
+ limit.hi |= ((tdp * 125) / 100) & PKG_POWER_LIMIT_MASK;
+ limit.hi |= PKG_POWER_LIMIT_EN;
+ /* Power limit 2 time is only programmable on server SKU */
+
+ wrmsr(MSR_PKG_POWER_LIMIT, limit);
+
+ /* Set power limit values in MCHBAR as well */
+ MCHBAR32(MCH_PKG_POWER_LIMIT_LO) = limit.lo;
+ MCHBAR32(MCH_PKG_POWER_LIMIT_HI) = limit.hi;
+
+ /* Set DDR RAPL power limit by copying from MMIO to MSR */
+ msr.lo = MCHBAR32(MCH_DDR_POWER_LIMIT_LO);
+ msr.hi = MCHBAR32(MCH_DDR_POWER_LIMIT_HI);
+ wrmsr(MSR_DDR_RAPL_LIMIT, msr);
+
+ /* Use nominal TDP values for CPUs with configurable TDP */
+ if (cpu_config_tdp_levels()) {
+ msr = rdmsr(MSR_CONFIG_TDP_NOMINAL);
+ limit.hi = 0;
+ limit.lo = msr.lo & 0xff;
+ wrmsr(MSR_TURBO_ACTIVATION_RATIO, limit);
+ }
+}
+
+static void configure_c_states(void)
+{
+ msr_t msr;
+
+ msr = rdmsr(MSR_PKG_CST_CONFIG_CONTROL);
+ msr.lo |= (1 << 31); // Timed MWAIT Enable
+ msr.lo |= (1 << 30); // Package c-state Undemotion Enable
+ msr.lo |= (1 << 29); // Package c-state Demotion Enable
+ msr.lo |= (1 << 28); // C1 Auto Undemotion Enable
+ msr.lo |= (1 << 27); // C3 Auto Undemotion Enable
+ msr.lo |= (1 << 26); // C1 Auto Demotion Enable
+ msr.lo |= (1 << 25); // C3 Auto Demotion Enable
+ msr.lo &= ~(1 << 10); // Disable IO MWAIT redirection
+ /* The deepest package c-state defaults to factory-configured value. */
+ wrmsr(MSR_PKG_CST_CONFIG_CONTROL, msr);
+
+ msr = rdmsr(MSR_MISC_PWR_MGMT);
+ msr.lo &= ~(1 << 0); // Enable P-state HW_ALL coordination
+ wrmsr(MSR_MISC_PWR_MGMT, msr);
+
+ msr = rdmsr(MSR_POWER_CTL);
+ msr.lo |= (1 << 18); // Enable Energy Perf Bias MSR 0x1b0
+ msr.lo |= (1 << 1); // C1E Enable
+ msr.lo |= (1 << 0); // Bi-directional PROCHOT#
+ wrmsr(MSR_POWER_CTL, msr);
+
+ /* C-state Interrupt Response Latency Control 0 - package C3 latency */
+ msr.hi = 0;
+ msr.lo = IRTL_VALID | IRTL_1024_NS | C_STATE_LATENCY_CONTROL_0_LIMIT;
+ wrmsr(MSR_C_STATE_LATENCY_CONTROL_0, msr);
+
+ /* C-state Interrupt Response Latency Control 1 */
+ msr.hi = 0;
+ msr.lo = IRTL_VALID | IRTL_1024_NS | C_STATE_LATENCY_CONTROL_1_LIMIT;
+ wrmsr(MSR_C_STATE_LATENCY_CONTROL_1, msr);
+
+ /* C-state Interrupt Response Latency Control 2 - package C6/C7 short */
+ msr.hi = 0;
+ msr.lo = IRTL_VALID | IRTL_1024_NS | C_STATE_LATENCY_CONTROL_2_LIMIT;
+ wrmsr(MSR_C_STATE_LATENCY_CONTROL_2, msr);
+
+ /* C-state Interrupt Response Latency Control 3 - package C8 */
+ msr.hi = 0;
+ msr.lo = IRTL_VALID | IRTL_1024_NS |
+ C_STATE_LATENCY_CONTROL_3_LIMIT;
+ wrmsr(MSR_C_STATE_LATENCY_CONTROL_3, msr);
+
+ /* C-state Interrupt Response Latency Control 4 - package C9 */
+ msr.hi = 0;
+ msr.lo = IRTL_VALID | IRTL_1024_NS |
+ C_STATE_LATENCY_CONTROL_4_LIMIT;
+ wrmsr(MSR_C_STATE_LATENCY_CONTROL_4, msr);
+
+ /* C-state Interrupt Response Latency Control 5 - package C10 */
+ msr.hi = 0;
+ msr.lo = IRTL_VALID | IRTL_1024_NS |
+ C_STATE_LATENCY_CONTROL_5_LIMIT;
+ wrmsr(MSR_C_STATE_LATENCY_CONTROL_5, msr);
+}
+
+static void configure_thermal_target(void)
+{
+ config_t *conf;
+ struct device *lapic;
+ msr_t msr;
+
+ /* Find pointer to CPU configuration */
+ lapic = dev_find_lapic(SPEEDSTEP_APIC_MAGIC);
+ if (!lapic || !lapic->chip_info)
+ return;
+ conf = lapic->chip_info;
+
+ /* Set TCC activation offset if supported */
+ msr = rdmsr(MSR_PLATFORM_INFO);
+ if ((msr.lo & (1 << 30)) && conf->tcc_offset) {
+ msr = rdmsr(MSR_TEMPERATURE_TARGET);
+ msr.lo &= ~(0xf << 24); /* Bits 27:24 */
+ msr.lo |= (conf->tcc_offset & 0xf) << 24;
+ wrmsr(MSR_TEMPERATURE_TARGET, msr);
+ }
+}
+
+static void configure_misc(void)
+{
+ msr_t msr;
+
+ msr = rdmsr(IA32_MISC_ENABLE);
+ msr.lo |= (1 << 0); /* Fast String enable */
+ msr.lo |= (1 << 3); /* TM1/TM2/EMTTM enable */
+ msr.lo |= (1 << 16); /* Enhanced SpeedStep Enable */
+ wrmsr(IA32_MISC_ENABLE, msr);
+
+ /* 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);
+}
+
+static void set_max_ratio(void)
+{
+ msr_t msr, perf_ctl;
+
+ 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);
+}
+
+static void configure_mca(void)
+{
+ msr_t msr;
+ int i;
+ int num_banks;
+
+ msr = rdmsr(IA32_MCG_CAP);
+ num_banks = msr.lo & 0xff;
+ msr.lo = msr.hi = 0;
+ /* 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. */
+ for (i = 0; i < num_banks; i++)
+ wrmsr(IA32_MC0_STATUS + (i * 4), msr);
+}
+
+/* All CPUs including BSP will run the following function. */
+static void cpu_core_init(struct device *cpu)
+{
+ /* Clear out pending MCEs */
+ configure_mca();
+
+ /* Enable the local CPU APICs */
+ enable_lapic_tpr();
+ setup_lapic();
+
+ /* Set virtualization based on Kconfig option */
+ set_vmx_and_lock();
+
+ /* Configure C States */
+ configure_c_states();
+
+ /* Configure Enhanced SpeedStep and Thermal Sensors */
+ configure_misc();
+
+ /* Thermal throttle activation offset */
+ configure_thermal_target();
+
+ /* Enable Direct Cache Access */
+ configure_dca_cap();
+
+ /* Set energy policy */
+ set_energy_perf_bias(ENERGY_POLICY_NORMAL);
+
+ /* Enable Turbo */
+ enable_turbo();
+}
+
+/* MP initialization support. */
+static const void *microcode_patch;
+
+static void pre_mp_init(void)
+{
+ /* Setup MTRRs based on physical address size. */
+ x86_setup_mtrrs_with_detect();
+ x86_mtrr_check();
+
+ initialize_vr_config();
+ calibrate_24mhz_bclk();
+ configure_pch_power_sharing();
+}
+
+static int get_cpu_count(void)
+{
+ msr_t msr;
+ int num_threads;
+ int num_cores;
+
+ msr = rdmsr(MSR_CORE_THREAD_COUNT);
+ num_threads = (msr.lo >> 0) & 0xffff;
+ num_cores = (msr.lo >> 16) & 0xffff;
+ printk(BIOS_DEBUG, "CPU has %u cores, %u threads enabled.\n",
+ num_cores, num_threads);
+
+ return num_threads;
+}
+
+static void get_microcode_info(const void **microcode, int *parallel)
+{
+ microcode_patch = intel_microcode_find();
+ *microcode = microcode_patch;
+ *parallel = 1;
+}
+
+static void per_cpu_smm_trigger(void)
+{
+ /* Relocate the SMM handler. */
+ smm_relocate();
+
+ /* After SMM relocation a 2nd microcode load is required. */
+ intel_microcode_load_unlocked(microcode_patch);
+}
+
+static void post_mp_init(void)
+{
+ /* Set Max Ratio */
+ set_max_ratio();
+
+ /* Now that all APs have been relocated as well as the BSP let SMIs
+ * start flowing. */
+ global_smi_enable();
+
+ /* Lock down the SMRAM space. */
+ smm_lock();
+}
+
+static const struct mp_ops mp_ops = {
+ .pre_mp_init = pre_mp_init,
+ .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 broadwell_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");
+}
+
+static struct device_operations cpu_dev_ops = {
+ .init = cpu_core_init,
+};
+
+static const struct cpu_device_id cpu_table[] = {
+ { X86_VENDOR_INTEL, CPUID_HASWELL_ULT },
+ { X86_VENDOR_INTEL, CPUID_BROADWELL_C0 },
+ { X86_VENDOR_INTEL, CPUID_BROADWELL_D0 },
+ { X86_VENDOR_INTEL, CPUID_BROADWELL_E0 },
+ { 0, 0 },
+};
+
+static const struct cpu_driver driver __cpu_driver = {
+ .ops = &cpu_dev_ops,
+ .id_table = cpu_table,
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-17 12:33:39 +0000