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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007-2009 coresystems GmbH
* 2012 secunet Security Networks AG
*
* 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 <console/console.h>
#include <cpu/x86/mtrr.h>
#include <cpu/x86/mp.h>
#include <cpu/intel/microcode.h>
#include <cpu/intel/smm/gen1/smi.h>
#include <cpu/intel/common/common.h>
/* Parallel 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();
}
static int get_cpu_count(void)
{
const struct cpuid_result cpuid1 = cpuid(1);
const char cores = (cpuid1.ebx >> 16) & 0xf;
printk(BIOS_DEBUG, "CPU has %u cores.\n", cores);
return cores;
}
/* the SMRR enable and lock bit need to be set in IA32_FEATURE_CONTROL
to enable SMRR so configure IA32_FEATURE_CONTROL early on */
static void pre_mp_smm_init(void)
{
smm_initialize();
}
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)
{
/* Now that all APs have been relocated as well as the BSP let SMIs
* start flowing. */
southbridge_smm_init();
/* 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,
.pre_mp_smm_init = pre_mp_smm_init,
.per_cpu_smm_trigger = per_cpu_smm_trigger,
.relocation_handler = smm_relocation_handler,
.post_mp_init = post_mp_init,
};
void bsp_init_and_start_aps(struct bus *cpu_bus)
{
if (mp_init_with_smm(cpu_bus, &mp_ops))
printk(BIOS_ERR, "MP initialization failure.\n");
}
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