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soc/intel/skylake: Perform CPU MP Init before FSP-S Init

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As per BWG, CPU MP Init (loading ucode) should be done prior
to BIOS_RESET_CPL. Hence, pull MP Init to BS_DEV_INIT_CHIPS Entry
(before FSP-S call).

BUG=chrome-os-partner:62438
BRANCH=NONE
TEST=Boot to OS with all threads enabled.

Change-Id: Ia6f83d466fb27e1290da84abe7832dc814b5273a
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/18287
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Subrata Banik
2017-02-03 18:57:49 +05:30
committed by Martin Roth
parent 408fda799a
commit a4b11e5c90
5 changed files with 31 additions and 18 deletions
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35
src/soc/intel/skylake/cpu.c
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@@ -3,7 +3,7 @@
*
* Copyright (C) 2007-2009 coresystems GmbH
* Copyright (C) 2014 Google Inc.
* Copyright (C) 2015 Intel Corporation.
* Copyright (C) 2015-2017 Intel Corporation.
*
* 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
@@ -15,6 +15,8 @@
* GNU General Public License for more details.
*/
#include <assert.h>
#include <bootstate.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
@@ -397,13 +399,6 @@ static const struct cpu_driver driver __cpu_driver = {
static const void *microcode_patch;
static int ht_disabled;
static void pre_mp_init(void)
{
/* Setup MTRRs based on physical address size. */
x86_setup_mtrrs_with_detect();
x86_mtrr_check();
}
static int get_cpu_count(void)
{
msr_t msr;
@@ -463,7 +458,12 @@ static void post_mp_init(void)
}
static const struct mp_ops mp_ops = {
.pre_mp_init = pre_mp_init,
/*
* 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 = NULL,
.get_cpu_count = get_cpu_count,
.get_smm_info = smm_info,
.get_microcode_info = get_microcode_info,
@@ -474,8 +474,10 @@ static const struct mp_ops mp_ops = {
.post_mp_init = post_mp_init,
};
void soc_init_cpus(device_t dev)
static void soc_init_cpus(void *unused)
{
device_t dev = dev_find_path(NULL, DEVICE_PATH_CPU_CLUSTER);
assert(dev != NULL);
struct bus *cpu_bus = dev->link_list;
if (mp_init_with_smm(cpu_bus, &mp_ops)) {
@@ -486,6 +488,13 @@ void soc_init_cpus(device_t dev)
configure_thermal_target();
}
/* Ensure to re-program all MTRRs based on DRAM resource settings */
static void soc_post_cpus_init(void *unused)
{
if (mp_run_on_all_cpus(&x86_setup_mtrrs_with_detect, 1000) < 0)
printk(BIOS_ERR, "MTRR programming failure\n");
}
int soc_skip_ucode_update(u32 current_patch_id, u32 new_patch_id)
{
msr_t msr;
@@ -498,3 +507,9 @@ int soc_skip_ucode_update(u32 current_patch_id, u32 new_patch_id)
msr = rdmsr(MTRR_CAP_MSR);
return (msr.lo & PRMRR_SUPPORTED) && (current_patch_id == new_patch_id - 1);
}
/*
* Do CPU MP Init before FSP Silicon Init
*/
BOOT_STATE_INIT_ENTRY(BS_DEV_INIT_CHIPS, BS_ON_ENTRY, soc_init_cpus, NULL);
BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_EXIT, soc_post_cpus_init, NULL);