diff options
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/intel/haswell/Kconfig | 1 | ||||
| -rw-r--r-- | src/cpu/intel/haswell/Makefile.inc | 24 | ||||
| -rw-r--r-- | src/cpu/intel/haswell/haswell.h | 9 | ||||
| -rw-r--r-- | src/cpu/intel/haswell/haswell_init.c | 112 | ||||
| -rw-r--r-- | src/cpu/intel/haswell/mp_init.c | 557 | ||||
| -rw-r--r-- | src/cpu/intel/haswell/sipi_vector.S | 192 | ||||
| -rw-r--r-- | src/cpu/intel/haswell/smmrelocate.c | 29 |
7 files changed, 82 insertions, 842 deletions
diff --git a/src/cpu/intel/haswell/Kconfig b/src/cpu/intel/haswell/Kconfig index 97309ae622..7949e23090 100644 --- a/src/cpu/intel/haswell/Kconfig +++ b/src/cpu/intel/haswell/Kconfig @@ -20,6 +20,7 @@ config CPU_SPECIFIC_OPTIONS #select AP_IN_SIPI_WAIT select TSC_SYNC_MFENCE select CPU_INTEL_FIRMWARE_INTERFACE_TABLE + select PARALLEL_MP config BOOTBLOCK_CPU_INIT string diff --git a/src/cpu/intel/haswell/Makefile.inc b/src/cpu/intel/haswell/Makefile.inc index 63c1939537..efed391a68 100644 --- a/src/cpu/intel/haswell/Makefile.inc +++ b/src/cpu/intel/haswell/Makefile.inc @@ -1,6 +1,4 @@ ramstage-y += haswell_init.c -subdirs-y += ../../x86/name -ramstage-y += mp_init.c ramstage-y += tsc_freq.c romstage-y += romstage.c romstage-y += tsc_freq.c @@ -15,25 +13,3 @@ smm-$(CONFIG_HAVE_SMI_HANDLER) += finalize.c smm-$(CONFIG_HAVE_SMI_HANDLER) += tsc_freq.c cpu_incs += $(src)/cpu/intel/haswell/cache_as_ram.inc - -# AP startub stub -SIPI_ELF=$(obj)/cpu/intel/haswell/sipi_vector.elf -SIPI_BIN=$(SIPI_ELF:.elf=) -SIPI_DOTO=$(SIPI_ELF:.elf=.o) - -ramstage-srcs += $(SIPI_BIN) -rmodules-y += sipi_vector.S -rmodules-y += sipi_header.c - -$(SIPI_DOTO): $(dir $(SIPI_ELF))sipi_vector.rmodules.o - $(CC) $(LDFLAGS) -nostdlib -r -o $@ $^ - -$(eval $(call rmodule_link,$(SIPI_ELF), $(SIPI_DOTO), 0)) - -$(SIPI_BIN): $(SIPI_ELF).rmod - $(OBJCOPY) -O binary $< $@ - -$(SIPI_BIN).ramstage.o: $(SIPI_BIN) - @printf " OBJCOPY $(subst $(obj)/,,$(@))\n" - cd $(dir $@); $(OBJCOPY) -I binary $(notdir $<) -O elf32-i386 -B i386 $(notdir $@) - diff --git a/src/cpu/intel/haswell/haswell.h b/src/cpu/intel/haswell/haswell.h index 190abc65ee..2369b8e516 100644 --- a/src/cpu/intel/haswell/haswell.h +++ b/src/cpu/intel/haswell/haswell.h @@ -200,16 +200,9 @@ void set_power_limits(u8 power_limit_1_time); int cpu_config_tdp_levels(void); /* Returns 0 on success, < 0 on failure. */ int smm_initialize(void); -void smm_initiate_relocation(void); -void smm_initiate_relocation_parallel(void); +void smm_relocate(void); struct bus; void bsp_init_and_start_aps(struct bus *cpu_bus); -/* Returns 0 on success. < 0 on failure. */ -int setup_ap_init(struct bus *cpu_bus, int *max_cpus, - const void *microcode_patch); -/* Returns 0 on success, < 0 on failure. */ -int start_aps(struct bus *cpu_bus, int max_cpus); -void release_aps_for_smm_relocation(int do_parallel_relocation); /* Determine if HyperThreading is disabled. The variable is not valid until * setup_ap_init() has been called. */ extern int ht_disabled; diff --git a/src/cpu/intel/haswell/haswell_init.c b/src/cpu/intel/haswell/haswell_init.c index b7bea20734..10f09938d2 100644 --- a/src/cpu/intel/haswell/haswell_init.c +++ b/src/cpu/intel/haswell/haswell_init.c @@ -27,6 +27,7 @@ #include <cpu/cpu.h> #include <cpu/x86/mtrr.h> #include <cpu/x86/msr.h> +#include <cpu/x86/mp.h> #include <cpu/x86/lapic.h> #include <cpu/intel/microcode.h> #include <cpu/intel/speedstep.h> @@ -679,28 +680,6 @@ static void configure_mca(void) static void bsp_init_before_ap_bringup(struct bus *cpu_bus) { - struct device_path cpu_path; - struct cpu_info *info; - char processor_name[49]; - - /* Print processor name */ - fill_processor_name(processor_name); - printk(BIOS_INFO, "CPU: %s.\n", processor_name); - - /* Ensure the local apic is enabled */ - enable_lapic(); - - /* Set the device path of the boot cpu. */ - cpu_path.type = DEVICE_PATH_APIC; - cpu_path.apic.apic_id = lapicid(); - - /* Find the device structure for the boot cpu. */ - info = cpu_info(); - info->cpu = alloc_find_dev(cpu_bus, &cpu_path); - - if (info->index != 0) - printk(BIOS_CRIT, "BSP index(%d) != 0!\n", info->index); - /* Setup MTRRs based on physical address size. */ x86_setup_fixed_mtrrs(); x86_setup_var_mtrrs(cpuid_eax(0x80000008) & 0xff, 2); @@ -712,9 +691,6 @@ static void bsp_init_before_ap_bringup(struct bus *cpu_bus) calibrate_24mhz_bclk(); configure_pch_power_sharing(); } - - /* Call through the cpu driver's initialization. */ - cpu_initialize(0); } /* All CPUs including BSP will run the following function. */ @@ -749,12 +725,57 @@ static void haswell_init(device_t cpu) enable_turbo(); } +/* MP initialization support. */ +static const void *microcode_patch; +int ht_disabled; + +static int adjust_apic_id_ht_disabled(int index, int apic_id) +{ + return 2 * index; +} + +static void relocate_and_load_microcode(void *unused) +{ + /* Relocate the SMM handler. */ + smm_relocate(); + + /* After SMM relocation a 2nd microcode load is required. */ + intel_microcode_load_unlocked(microcode_patch); +} + +static void enable_smis(void *unused) +{ + /* Now that all APs have been relocated as well as the BSP let SMIs + * start flowing. */ + southbridge_smm_enable_smi(); + + /* Lock down the SMRAM space. */ + smm_lock(); +} + +static struct mp_flight_record mp_steps[] = { + MP_FR_NOBLOCK_APS(relocate_and_load_microcode, NULL, + relocate_and_load_microcode, NULL), + MP_FR_BLOCK_APS(mp_initialize_cpu, NULL, mp_initialize_cpu, NULL), + /* Wait for APs to finish initialization before proceeding. */ + MP_FR_BLOCK_APS(NULL, NULL, enable_smis, NULL), +}; + void bsp_init_and_start_aps(struct bus *cpu_bus) { - int max_cpus; - int num_aps; - const void *microcode_patch; void *smm_save_area; + int num_threads; + int num_cores; + msr_t msr; + struct mp_params mp_params; + + msr = rdmsr(CORE_THREAD_COUNT_MSR); + 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); + + ht_disabled = num_threads == num_cores; /* Perform any necessary BSP initialization before APs are brought up. * This call also allows the BSP to prepare for any secondary effects @@ -766,27 +787,24 @@ void bsp_init_and_start_aps(struct bus *cpu_bus) /* Save default SMM area before relocation occurs. */ smm_save_area = backup_default_smm_area(); - /* This needs to be called after the mtrr setup so the BSP mtrrs - * can be mirrored by the APs. */ - if (setup_ap_init(cpu_bus, &max_cpus, microcode_patch)) { - printk(BIOS_CRIT, "AP setup initialization failed. " - "No APs will be brought up.\n"); - return; + mp_params.num_cpus = num_threads; + mp_params.parallel_microcode_load = 1; + if (ht_disabled) + mp_params.adjust_apic_id = adjust_apic_id_ht_disabled; + else + mp_params.adjust_apic_id = NULL; + mp_params.flight_plan = &mp_steps[0]; + mp_params.num_records = ARRAY_SIZE(mp_steps); + mp_params.microcode_pointer = microcode_patch; + + /* Load relocation and permeanent handlers. Then initiate relocation. */ + if (smm_initialize()) + printk(BIOS_CRIT, "SMM Initialiazation failed...\n"); + + if (mp_init(cpu_bus, &mp_params)) { + printk(BIOS_ERR, "MP initialization failure.\n"); } - num_aps = max_cpus - 1; - if (start_aps(cpu_bus, num_aps)) { - printk(BIOS_CRIT, "AP startup failed. Trying to continue.\n"); - } - - if (smm_initialize()) { - printk(BIOS_CRIT, "SMM Initialization failed...\n"); - return; - } - - /* After SMM relocation a 2nd microcode load is required. */ - intel_microcode_load_unlocked(microcode_patch); - /* Restore the default SMM region. */ restore_default_smm_area(smm_save_area); } diff --git a/src/cpu/intel/haswell/mp_init.c b/src/cpu/intel/haswell/mp_init.c deleted file mode 100644 index 03983605bd..0000000000 --- a/src/cpu/intel/haswell/mp_init.c +++ /dev/null @@ -1,557 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2013 ChromeOS Authors - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; version 2 of - * the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, - * MA 02110-1301 USA - */ - -#include <console/console.h> -#include <stdint.h> -#include <rmodule.h> -#include <arch/cpu.h> -#include <cpu/cpu.h> -#include <cpu/intel/microcode.h> -#include <cpu/x86/cache.h> -#include <cpu/x86/lapic.h> -#include <cpu/x86/msr.h> -#include <cpu/x86/mtrr.h> -#include <cpu/x86/smm.h> -#include <delay.h> -#include <device/device.h> -#include <device/path.h> -#include <lib.h> -#include <smp/atomic.h> -#include <smp/spinlock.h> -#include <thread.h> -#include "haswell.h" - -/* This needs to match the layout in the .module_parametrs section. */ -struct sipi_params { - u16 gdtlimit; - u32 gdt; - u16 unused; - u32 idt_ptr; - u32 stack_top; - u32 stack_size; - u32 microcode_ptr; - u32 msr_table_ptr; - u32 msr_count; - u32 c_handler; - u32 c_handler_arg; - u8 apic_to_cpu_num[CONFIG_MAX_CPUS]; -} __attribute__((packed)); - -/* This also needs to match the assembly code for saved MSR encoding. */ -struct saved_msr { - u32 index; - u32 lo; - u32 hi; -} __attribute__((packed)); - - -/* The sipi vector rmodule is included in the ramstage using 'objdump -B'. */ -extern char _binary_sipi_vector_start[]; -/* These symbols are defined in c_start.S. */ -extern char gdt[]; -extern char gdt_end[]; -extern char idtarg[]; - -/* This table keeps track of each CPU's APIC id. */ -static u8 apic_id_table[CONFIG_MAX_CPUS]; -static device_t cpu_devs[CONFIG_MAX_CPUS]; - -/* Number of APs checked that have checked in. */ -static atomic_t num_aps; -/* Number of APs that have relocated their SMM handler. */ -static atomic_t num_aps_relocated_smm; -/* Barrier to stop APs from performing SMM relocation. */ -static int smm_relocation_barrier_begin __attribute__ ((aligned (64))); -/* Determine if hyperthreading is disabled. */ -int ht_disabled; - -static inline void mfence(void) -{ - __asm__ __volatile__("mfence\t\n": : :"memory"); -} - -static inline void wait_for_barrier(volatile int *barrier) -{ - while (*barrier == 0) { - asm ("pause"); - } -} - -static inline void release_barrier(volatile int *barrier) -{ - *barrier = 1; -} - -static void ap_wait_for_smm_relocation_begin(void) -{ - wait_for_barrier(&smm_relocation_barrier_begin); -} - -/* This function pointer is used by the non-BSP CPUs to initiate relocation. It - * points to either a serial or parallel SMM initiation. */ -static void (*ap_initiate_smm_relocation)(void) = &smm_initiate_relocation; - - -/* Returns 1 if timeout waiting for APs. 0 if target aps found. */ -static int wait_for_aps(atomic_t *val, int target, int total_delay, - int delay_step) -{ - int timeout = 0; - int delayed = 0; - while (atomic_read(val) != target) { - udelay(delay_step); - delayed += delay_step; - if (delayed >= total_delay) { - timeout = 1; - break; - } - } - - return timeout; -} - -void release_aps_for_smm_relocation(int do_parallel) -{ - /* Change the AP SMM initiation function, and ensure it is visible - * before releasing the APs. */ - if (do_parallel) { - ap_initiate_smm_relocation = &smm_initiate_relocation_parallel; - mfence(); - } - release_barrier(&smm_relocation_barrier_begin); - /* Wait for CPUs to relocate their SMM handler up to 100ms. */ - if (wait_for_aps(&num_aps_relocated_smm, atomic_read(&num_aps), - 100000 /* 100 ms */, 200 /* us */)) - printk(BIOS_DEBUG, "Timed out waiting for AP SMM relocation\n"); -} - -/* By the time APs call ap_init() caching has been setup, and microcode has - * been loaded. */ -static void asmlinkage ap_init(unsigned int cpu, void *microcode_ptr) -{ - struct cpu_info *info; - - /* Signal that the AP has arrived. */ - atomic_inc(&num_aps); - - /* Ensure the local apic is enabled */ - enable_lapic(); - - info = cpu_info(); - info->index = cpu; - info->cpu = cpu_devs[cpu]; - thread_init_cpu_info_non_bsp(info); - - apic_id_table[info->index] = lapicid(); - info->cpu->path.apic.apic_id = apic_id_table[info->index]; - - /* Call through the cpu driver's initialization. */ - cpu_initialize(info->index); - - ap_wait_for_smm_relocation_begin(); - - ap_initiate_smm_relocation(); - - /* Indicate that SMM relocation has occurred on this thread. */ - atomic_inc(&num_aps_relocated_smm); - - /* After SMM relocation a 2nd microcode load is required. */ - intel_microcode_load_unlocked(microcode_ptr); - - /* FIXME(adurbin): park CPUs properly -- preferably somewhere in a - * reserved part of memory that the OS cannot get to. */ - stop_this_cpu(); -} - -static void setup_default_sipi_vector_params(struct sipi_params *sp) -{ - int i; - u8 apic_id; - u8 apic_id_inc; - - sp->gdt = (u32)&gdt; - sp->gdtlimit = (u32)&gdt_end - (u32)&gdt - 1; - sp->idt_ptr = (u32)&idtarg; - sp->stack_size = CONFIG_STACK_SIZE; - sp->stack_top = (u32)&_estack; - /* Adjust the stack top to take into account cpu_info. */ - sp->stack_top -= sizeof(struct cpu_info); - - /* Default to linear APIC id space if HT is enabled. If it is - * disabled the APIC ids increase by 2 as the odd numbered APIC - * ids are not present.*/ - apic_id_inc = (ht_disabled) ? 2 : 1; - for (i = 0, apic_id = 0; i < CONFIG_MAX_CPUS; i++) { - sp->apic_to_cpu_num[i] = apic_id; - apic_id += apic_id_inc; - } -} - -#define NUM_FIXED_MTRRS 11 -static unsigned int fixed_mtrrs[NUM_FIXED_MTRRS] = { - MTRRfix64K_00000_MSR, MTRRfix16K_80000_MSR, MTRRfix16K_A0000_MSR, - MTRRfix4K_C0000_MSR, MTRRfix4K_C8000_MSR, MTRRfix4K_D0000_MSR, - MTRRfix4K_D8000_MSR, MTRRfix4K_E0000_MSR, MTRRfix4K_E8000_MSR, - MTRRfix4K_F0000_MSR, MTRRfix4K_F8000_MSR, -}; - -static inline struct saved_msr *save_msr(int index, struct saved_msr *entry) -{ - msr_t msr; - - msr = rdmsr(index); - entry->index = index; - entry->lo = msr.lo; - entry->hi = msr.hi; - - /* Return the next entry. */ - entry++; - return entry; -} - -static int save_bsp_msrs(char *start, int size) -{ - int msr_count; - int num_var_mtrrs; - struct saved_msr *msr_entry; - int i; - msr_t msr; - - /* Determine number of MTRRs need to be saved. */ - msr = rdmsr(MTRRcap_MSR); - num_var_mtrrs = msr.lo & 0xff; - - /* 2 * num_var_mtrrs for base and mask. +1 for IA32_MTRR_DEF_TYPE. */ - msr_count = 2 * num_var_mtrrs + NUM_FIXED_MTRRS + 1; - - if ((msr_count * sizeof(struct saved_msr)) > size) { - printk(BIOS_CRIT, "Cannot mirror all %d msrs.\n", msr_count); - return -1; - } - - msr_entry = (void *)start; - for (i = 0; i < NUM_FIXED_MTRRS; i++) { - msr_entry = save_msr(fixed_mtrrs[i], msr_entry); - } - - for (i = 0; i < num_var_mtrrs; i++) { - msr_entry = save_msr(MTRRphysBase_MSR(i), msr_entry); - msr_entry = save_msr(MTRRphysMask_MSR(i), msr_entry); - } - - msr_entry = save_msr(MTRRdefType_MSR, msr_entry); - - return msr_count; -} - -/* The SIPI vector is loaded at the SMM_DEFAULT_BASE. The reason is at the - * memory range is already reserved so the OS cannot use it. That region is - * free to use for AP bringup before SMM is initialized. */ -static u32 sipi_vector_location = SMM_DEFAULT_BASE; -static int sipi_vector_location_size = SMM_DEFAULT_SIZE; - -static int load_sipi_vector(const void *microcode_patch) -{ - struct rmodule sipi_mod; - int module_size; - int num_msrs; - struct sipi_params *sp; - char *mod_loc = (void *)sipi_vector_location; - const int loc_size = sipi_vector_location_size; - - if (rmodule_parse(&_binary_sipi_vector_start, &sipi_mod)) { - printk(BIOS_CRIT, "Unable to parse sipi module.\n"); - return -1; - } - - if (rmodule_entry_offset(&sipi_mod) != 0) { - printk(BIOS_CRIT, "SIPI module entry offset is not 0!\n"); - return -1; - } - - if (rmodule_load_alignment(&sipi_mod) != 4096) { - printk(BIOS_CRIT, "SIPI module load alignment(%d) != 4096.\n", - rmodule_load_alignment(&sipi_mod)); - return -1; - } - - module_size = rmodule_memory_size(&sipi_mod); - - /* Align to 4 bytes. */ - module_size += 3; - module_size &= ~3; - - if (module_size > loc_size) { - printk(BIOS_CRIT, "SIPI module size (%d) > region size (%d).\n", - module_size, loc_size); - return -1; - } - - num_msrs = save_bsp_msrs(&mod_loc[module_size], loc_size - module_size); - - if (num_msrs < 0) { - printk(BIOS_CRIT, "Error mirroring BSP's msrs.\n"); - return -1; - } - - if (rmodule_load(mod_loc, &sipi_mod)) { - printk(BIOS_CRIT, "Unable to load SIPI module.\n"); - return -1; - } - - sp = rmodule_parameters(&sipi_mod); - - if (sp == NULL) { - printk(BIOS_CRIT, "SIPI module has no parameters.\n"); - return -1; - } - - setup_default_sipi_vector_params(sp); - /* Setup MSR table. */ - sp->msr_table_ptr = (u32)&mod_loc[module_size]; - sp->msr_count = num_msrs; - /* Provide pointer to microcode patch. */ - sp->microcode_ptr = (u32)microcode_patch; - /* The microcode pointer is passed on through to the c handler so - * that it can be loaded again after SMM relocation. */ - sp->c_handler_arg = (u32)microcode_patch; - sp->c_handler = (u32)&ap_init; - - /* Make sure SIPI vector hits RAM so the APs that come up will see - * the startup code even if the caches are disabled. */ - wbinvd(); - - return 0; -} - -static int allocate_cpu_devices(struct bus *cpu_bus, int *total_hw_threads) -{ - int i; - int num_threads; - int num_cores; - int max_cpus; - struct cpu_info *info; - msr_t msr; - - info = cpu_info(); - cpu_devs[info->index] = info->cpu; - apic_id_table[info->index] = info->cpu->path.apic.apic_id; - - msr = rdmsr(CORE_THREAD_COUNT_MSR); - 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); - - max_cpus = num_threads; - *total_hw_threads = num_threads; - if (num_threads > CONFIG_MAX_CPUS) { - printk(BIOS_CRIT, "CPU count(%d) exceeds CONFIG_MAX_CPUS(%d)\n", - num_threads, CONFIG_MAX_CPUS); - max_cpus = CONFIG_MAX_CPUS; - } - - /* Determine if hyperthreading is enabled. If not, the APIC id space - * is sparse with ids incrementing by 2 instead of 1. */ - ht_disabled = num_threads == num_cores; - - for (i = 1; i < max_cpus; i++) { - struct device_path cpu_path; - device_t new; - - /* Build the cpu device path */ - cpu_path.type = DEVICE_PATH_APIC; - cpu_path.apic.apic_id = info->cpu->path.apic.apic_id + i; - if (ht_disabled) - cpu_path.apic.apic_id = cpu_path.apic.apic_id * 2; - - /* Allocate the new cpu device structure */ - new = alloc_find_dev(cpu_bus, &cpu_path); - if (new == NULL) { - printk(BIOS_CRIT, "Could not allocate cpu device\n"); - max_cpus--; - } - cpu_devs[i] = new; - } - - return max_cpus; -} - -int setup_ap_init(struct bus *cpu_bus, int *max_cpus, - const void *microcode_patch) -{ - int num_cpus; - int hw_threads; - - /* Default to currently running CPU. */ - num_cpus = allocate_cpu_devices(cpu_bus, &hw_threads); - - /* Load the SIPI vector. */ - if (load_sipi_vector(microcode_patch)) - return -1; - - *max_cpus = num_cpus; - - if (num_cpus < hw_threads) { - printk(BIOS_CRIT, - "ERROR: More HW threads (%d) than support (%d).\n", - hw_threads, num_cpus); - return -1; - } - - return 0; -} - -/* Returns 1 for timeout. 0 on success. */ -static int apic_wait_timeout(int total_delay, int delay_step) -{ - int total = 0; - int timeout = 0; - - while (lapic_read(LAPIC_ICR) & LAPIC_ICR_BUSY) { - udelay(delay_step); - total += delay_step; - if (total >= total_delay) { - timeout = 1; - break; - } - } - - return timeout; -} - -int start_aps(struct bus *cpu_bus, int ap_count) -{ - int sipi_vector; - - if (ap_count == 0) - return 0; - - /* The vector is sent as a 4k aligned address in one byte. */ - sipi_vector = sipi_vector_location >> 12; - - if (sipi_vector > 256) { - printk(BIOS_CRIT, "SIPI vector too large! 0x%08x\n", - sipi_vector); - return -1; - } - - printk(BIOS_DEBUG, "Attempting to start %d APs\n", ap_count); - - if ((lapic_read(LAPIC_ICR) & LAPIC_ICR_BUSY)) { - printk(BIOS_DEBUG, "Waiting for ICR not to be busy..."); - if (apic_wait_timeout(1000 /* 1 ms */, 50)) { - printk(BIOS_DEBUG, "timed out. Aborting.\n"); - return -1; - } else - printk(BIOS_DEBUG, "done.\n"); - } - - /* Send INIT IPI to all but self. */ - lapic_write_around(LAPIC_ICR2, SET_LAPIC_DEST_FIELD(0)); - lapic_write_around(LAPIC_ICR, LAPIC_DEST_ALLBUT | LAPIC_INT_ASSERT | - LAPIC_DM_INIT); - printk(BIOS_DEBUG, "Waiting for 10ms after sending INIT.\n"); - mdelay(10); - - /* Send 1st SIPI */ - if ((lapic_read(LAPIC_ICR) & LAPIC_ICR_BUSY)) { - printk(BIOS_DEBUG, "Waiting for ICR not to be busy..."); - if (apic_wait_timeout(1000 /* 1 ms */, 50)) { - printk(BIOS_DEBUG, "timed out. Aborting.\n"); - return -1; - } else - printk(BIOS_DEBUG, "done.\n"); - } - - lapic_write_around(LAPIC_ICR2, SET_LAPIC_DEST_FIELD(0)); - lapic_write_around(LAPIC_ICR, LAPIC_DEST_ALLBUT | LAPIC_INT_ASSERT | - LAPIC_DM_STARTUP | sipi_vector); - printk(BIOS_DEBUG, "Waiting for 1st SIPI to complete..."); - if (apic_wait_timeout(10000 /* 10 ms */, 50 /* us */)) { - printk(BIOS_DEBUG, "timed out.\n"); - return -1; - } else { - printk(BIOS_DEBUG, "done.\n"); - } - /* Wait for CPUs to check in up to 200 us. */ - wait_for_aps(&num_aps, ap_count, 200 /* us */, 15 /* us */); - - /* Send 2nd SIPI */ - if ((lapic_read(LAPIC_ICR) & LAPIC_ICR_BUSY)) { - printk(BIOS_DEBUG, "Waiting for ICR not to be busy..."); - if (apic_wait_timeout(1000 /* 1 ms */, 50)) { - printk(BIOS_DEBUG, "timed out. Aborting.\n"); - return -1; - } else - printk(BIOS_DEBUG, "done.\n"); - } - - lapic_write_around(LAPIC_ICR2, SET_LAPIC_DEST_FIELD(0)); - lapic_write_around(LAPIC_ICR, LAPIC_DEST_ALLBUT | LAPIC_INT_ASSERT | - LAPIC_DM_STARTUP | sipi_vector); - printk(BIOS_DEBUG, "Waiting for 2nd SIPI to complete..."); - if (apic_wait_timeout(10000 /* 10 ms */, 50 /* us */)) { - printk(BIOS_DEBUG, "timed out.\n"); - return -1; - } else { - printk(BIOS_DEBUG, "done.\n"); - } - - /* Wait for CPUs to check in. */ - if (wait_for_aps(&num_aps, ap_count, 10000 /* 10 ms */, 50 /* us */)) { - printk(BIOS_DEBUG, "Not all APs checked in: %d/%d.\n", - atomic_read(&num_aps), ap_count); - return -1; - } - - return 0; -} - -void smm_initiate_relocation_parallel(void) -{ - if ((lapic_read(LAPIC_ICR) & LAPIC_ICR_BUSY)) { - printk(BIOS_DEBUG, "Waiting for ICR not to be busy..."); - if (apic_wait_timeout(1000 /* 1 ms */, 50)) { - printk(BIOS_DEBUG, "timed out. Aborting.\n"); - return; - } else - printk(BIOS_DEBUG, "done.\n"); - } - - lapic_write_around(LAPIC_ICR2, SET_LAPIC_DEST_FIELD(lapicid())); - lapic_write_around(LAPIC_ICR, LAPIC_INT_ASSERT | LAPIC_DM_SMI); - if (apic_wait_timeout(1000 /* 1 ms */, 100 /* us */)) { - printk(BIOS_DEBUG, "SMI Relocation timed out.\n"); - } else - printk(BIOS_DEBUG, "Relocation complete.\n"); - -} - -DECLARE_SPIN_LOCK(smm_relocation_lock); - -void smm_initiate_relocation(void) -{ - spin_lock(&smm_relocation_lock); - smm_initiate_relocation_parallel(); - spin_unlock(&smm_relocation_lock); -} - diff --git a/src/cpu/intel/haswell/sipi_vector.S b/src/cpu/intel/haswell/sipi_vector.S deleted file mode 100644 index e0abb7c9b2..0000000000 --- a/src/cpu/intel/haswell/sipi_vector.S +++ /dev/null @@ -1,192 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2013 ChromeOS Authors - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; version 2 of - * the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, - * MA 02110-1301 USA - */ - -/* The SIPI vector is responsible for initializing the APs in the sytem. It - * loads microcode, sets up MSRs, and enables caching before calling into - * C code. */ - -/* These segment selectors need to match the gdt entries in c_start.S. */ -#define CODE_SEG 0x10 -#define DATA_SEG 0x18 - -#define IA32_UPDT_TRIG 0x79 -#define IA32_BIOS_SIGN_ID 0x8b - -.section ".module_parameters", "aw", @progbits -ap_start_params: -gdtaddr: -.word 0 /* limit */ -.long 0 /* table */ -.word 0 /* unused */ -idt_ptr: -.long 0 -stack_top: -.long 0 -stack_size: -.long 0 -microcode_ptr: -.long 0 -msr_table_ptr: -.long 0 -msr_count: -.long 0 -c_handler: -.long 0 -c_handler_arg: -.long 0 -apic_to_cpu_num: -.fill CONFIG_MAX_CPUS,1,0xff - -.text -.code16 -.global ap_start -.global __rmodule_entry -__rmodule_entry: -ap_start: - cli - xorl %eax, %eax - movl %eax, %cr3 /* Invalidate TLB*/ - - /* On hyper threaded cpus, invalidating the cache here is - * very very bad. Don't. - */ - - /* setup the data segment */ - movw %cs, %ax - movw %ax, %ds - - /* The gdtaddr needs to be releative to the data segment in order - * to properly dereference it. The .text section comes first in an - * rmodule so ap_start can be used as a proxy for the load address. */ - movl $(gdtaddr), %ebx - sub $(ap_start), %ebx - - data32 lgdt (%ebx) - - movl %cr0, %eax - andl $0x7FFAFFD1, %eax /* PG,AM,WP,NE,TS,EM,MP = 0 */ - orl $0x60000001, %eax /* CD, NW, PE = 1 */ - movl %eax, %cr0 - - ljmpl $CODE_SEG, $1f -1: - .code32 - movw $DATA_SEG, %ax - movw %ax, %ds - movw %ax, %es - movw %ax, %ss - movw %ax, %fs - movw %ax, %gs - - /* Load the Interrupt descriptor table */ - mov idt_ptr, %ebx - lidt (%ebx) - - /* The CPU number is calculated by reading the initial APIC id. */ - mov $1, %eax - cpuid - /* Default APIC id in ebx[31:24]. Move it to bl. */ - bswap %ebx - mov $(apic_to_cpu_num), %eax - xor %ecx, %ecx - -1: - cmp (%eax, %ecx, 1), %bl - je 1f - inc %ecx - cmp $CONFIG_MAX_CPUS, %ecx - jne 1b - - /* This is bad. No CPU number found. However, the BSP should have setup - * the AP handler properly. Just park the CPU. */ - mov $0x80, %dx - movw $0xdead, %ax - outw %ax, %dx - jmp halt_jump -1: - /* Setup stacks for each CPU. */ - movl stack_size, %eax - mul %ecx - movl stack_top, %edx - subl %eax, %edx - mov %edx, %esp - /* Save cpu number. */ - mov %ecx, %esi - - /* Determine if one should check microcode versions. */ - mov microcode_ptr, %edi - test %edi, %edi - jz 1f /* Bypass if no microde exists. */ - - /* Get the Microcode version. */ - mov $1, %eax - cpuid - mov $IA32_BIOS_SIGN_ID, %ecx - rdmsr - /* If something already loaded skip loading again. */ - test %edx, %edx - jnz 1f - - /* Load new microcode. */ - mov $IA32_UPDT_TRIG, %ecx - xor %edx, %edx - mov %edi, %eax - /* The microcode pointer is passed in pointing to the header. Adjust - * pointer to reflect the payload (header size is 48 bytes). */ - add $48, %eax - pusha - wrmsr - popa - -1: - /* - * Load MSRs. Each entry in the table consists of: - * 0: index, - * 4: value[31:0] - * 8: value[63:32] - */ - mov msr_table_ptr, %edi - mov msr_count, %ebx - test %ebx, %ebx - jz 1f -load_msr: - mov (%edi), %ecx - mov 4(%edi), %eax - mov 8(%edi), %edx - wrmsr - add $12, %edi - dec %ebx - jnz load_msr - -1: - /* Enable caching. */ - mov %cr0, %eax - and $0x9fffffff, %eax /* CD, NW = 0 */ - mov %eax, %cr0 - - /* c_handler(cpu_num, *c_handler_arg) */ - push c_handler_arg - push %esi /* cpu_num */ - mov c_handler, %eax - call *%eax -halt_jump: - hlt - jmp halt_jump diff --git a/src/cpu/intel/haswell/smmrelocate.c b/src/cpu/intel/haswell/smmrelocate.c index dfbcf2e46b..3af06b0f61 100644 --- a/src/cpu/intel/haswell/smmrelocate.c +++ b/src/cpu/intel/haswell/smmrelocate.c @@ -24,6 +24,7 @@ #include <cpu/cpu.h> #include <cpu/x86/cache.h> #include <cpu/x86/lapic.h> +#include <cpu/x86/mp.h> #include <cpu/x86/msr.h> #include <cpu/x86/mtrr.h> #include <cpu/x86/smm.h> @@ -435,27 +436,27 @@ int smm_initialize(void) /* Run the relocation handler. */ smm_initiate_relocation(); - /* If smm_save_state_in_msrs is non-zero then parallel SMM relocation - * shall take place. Run the relocation handler a second time to do - * the final move. */ if (smm_reloc_params.smm_save_state_in_msrs) { printk(BIOS_DEBUG, "Doing parallel SMM relocation.\n"); - release_aps_for_smm_relocation(1); - smm_initiate_relocation_parallel(); - } else { - release_aps_for_smm_relocation(0); } - /* Now that all APs have been relocated as well as the BSP let SMIs - * start flowing. */ - southbridge_smm_enable_smi(); - - /* Lock down the SMRAM space. */ - smm_lock(); - return 0; } +void smm_relocate(void) +{ + /* + * If smm_save_state_in_msrs is non-zero then parallel SMM relocation + * shall take place. Run the relocation handler a second time on the + * BSP to do * the final move. For APs, a relocation handler always + * needs to be run. + */ + if (smm_reloc_params.smm_save_state_in_msrs) + smm_initiate_relocation_parallel(); + else if (!boot_cpu()) + smm_initiate_relocation(); +} + void smm_init(void) { /* smm_init() is normally called from initialize_cpus() in |