diff options
| author | Subrata Banik <subrata.banik@intel.com> | 2017-02-03 18:57:49 +0530 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-02-14 19:13:03 +0100 |
| commit | a4b11e5c90a51dadc9b02ec080c0fb192cac3997 (patch) | |
| tree | 6770d18fbf8dfb9dbd0e85fffdc062b30bfd404d /src/soc/intel/skylake/cpu.c | |
| parent | 408fda799a55c4d104178dfa733b4ade2ad454cf (diff) | |
| download | coreboot-a4b11e5c90a51dadc9b02ec080c0fb192cac3997.tar.xz | |
soc/intel/skylake: Perform CPU MP Init before FSP-S Init
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>
Diffstat (limited to 'src/soc/intel/skylake/cpu.c')
| -rw-r--r-- | src/soc/intel/skylake/cpu.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/src/soc/intel/skylake/cpu.c b/src/soc/intel/skylake/cpu.c index e8616f08c4..fd726c8df3 100644 --- a/src/soc/intel/skylake/cpu.c +++ b/src/soc/intel/skylake/cpu.c @@ -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); |