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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Google Inc.
* Copyright (C) 2015-2016 Intel Corp.
*
* 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.
*/
#include <stdlib.h>
#include <console/console.h>
#include <cpu/cpu.h>
#include <cpu/intel/microcode.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 <soc/msr.h>
#include <soc/pattrs.h>
#include <soc/ramstage.h>
static void configure_mca(void);
static struct mp_flight_record mp_steps[] = {
MP_FR_BLOCK_APS(mp_initialize_cpu, NULL, mp_initialize_cpu, NULL),
};
static int adjust_apic_id(int index, int apic_id)
{
return index;
}
static void configure_mca(void)
{
msr_t msr;
const unsigned int mcg_cap_msr = 0x179;
int i;
int num_banks;
msr = rdmsr(mcg_cap_msr);
num_banks = msr.lo & 0xff;
/* 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. */
msr.lo = msr.hi = 0;
for (i = 0; i < num_banks; i++) {
wrmsr(MSR_IA32_MC0_STATUS + (i * 4) + 1, msr);
wrmsr(MSR_IA32_MC0_STATUS + (i * 4) + 2, msr);
wrmsr(MSR_IA32_MC0_STATUS + (i * 4) + 3, msr);
}
msr.lo = msr.hi = 0xffffffff;
for (i = 0; i < num_banks; i++)
wrmsr(MSR_IA32_MC0_STATUS + (i * 4), msr);
}
void broadwell_de_init_cpus(device_t dev)
{
struct bus *cpu_bus = dev->link_list;
const struct pattrs *pattrs = pattrs_get();
struct mp_params mp_params;
x86_mtrr_check();
/* Enable the local cpu apics */
setup_lapic();
mp_params.num_cpus = pattrs->num_cpus,
mp_params.parallel_microcode_load = 1,
mp_params.adjust_apic_id = adjust_apic_id;
mp_params.flight_plan = &mp_steps[0];
mp_params.num_records = ARRAY_SIZE(mp_steps);
mp_params.microcode_pointer = pattrs->microcode_patch;
if (mp_init(cpu_bus, &mp_params)) {
printk(BIOS_ERR, "MP initialization failure.\n");
}
}
static void broadwell_de_core_init(device_t cpu)
{
printk(BIOS_DEBUG, "Init Broadwell-DE core.\n");
configure_mca();
}
static struct device_operations cpu_dev_ops = {
.init = broadwell_de_core_init,
};
static struct cpu_device_id cpu_table[] = {
{ X86_VENDOR_INTEL, 0x50661 },
{ X86_VENDOR_INTEL, 0x50662 },
{ X86_VENDOR_INTEL, 0x50663 },
{ X86_VENDOR_INTEL, 0x50664 },
{ 0, 0 },
};
static const struct cpu_driver driver __cpu_driver = {
.ops = &cpu_dev_ops,
.id_table = cpu_table,
};
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