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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Google Inc.
*
* 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 <arch/cbfs.h>
#include <arch/hlt.h>
#include <arch/io.h>
#include <cbfs.h>
#include <cbmem.h>
#include <console/console.h>
#include <device/pci_def.h>
#include <string.h>
#if CONFIG_EC_GOOGLE_CHROMEEC
#include <ec/google/chromeec/ec.h>
#include <ec/google/chromeec/ec_commands.h>
#endif
#include <vendorcode/google/chromeos/chromeos.h>
#include <soc/intel/common/mrc_cache.h>
#include <broadwell/iomap.h>
#include <broadwell/pei_data.h>
#include <broadwell/pei_wrapper.h>
#include <broadwell/pm.h>
#include <broadwell/reset.h>
#include <broadwell/romstage.h>
#include <broadwell/smm.h>
#include <broadwell/systemagent.h>
/*
* Find PEI executable in coreboot filesystem and execute it.
*/
void raminit(struct pei_data *pei_data)
{
const struct mrc_saved_data *cache;
pei_wrapper_entry_t entry;
int ret;
broadwell_fill_pei_data(pei_data);
if (recovery_mode_enabled()) {
/* Recovery mode does not use MRC cache */
printk(BIOS_DEBUG, "Recovery mode: not using MRC cache.\n");
} else if (!mrc_cache_get_current(&cache)) {
/* MRC cache found */
pei_data->saved_data_size = cache->size;
pei_data->saved_data = &cache->data[0];
} else if (pei_data->boot_mode == SLEEP_STATE_S3) {
/* Waking from S3 and no cache. */
printk(BIOS_DEBUG, "No MRC cache found in S3 resume path.\n");
post_code(POST_RESUME_FAILURE);
reset_system();
} else {
printk(BIOS_DEBUG, "No MRC cache found.\n");
#if CONFIG_EC_GOOGLE_CHROMEEC
if (pei_data->boot_mode == SLEEP_STATE_S0) {
/* Ensure EC is running RO firmware. */
google_chromeec_check_ec_image(EC_IMAGE_RO);
}
#endif
}
/* Determine if mrc.bin is in the cbfs. */
entry = (pei_wrapper_entry_t)cbfs_get_file_content(
CBFS_DEFAULT_MEDIA, "mrc.bin", 0xab);
if (entry == NULL) {
printk(BIOS_DEBUG, "Couldn't find mrc.bin\n");
return;
}
printk(BIOS_DEBUG, "Starting Memory Reference Code\n");
ret = entry(pei_data);
if (ret < 0)
die("pei_data version mismatch\n");
/* Print the MRC version after executing the UEFI PEI stage. */
u32 version = MCHBAR32(MCHBAR_PEI_VERSION);
printk(BIOS_DEBUG, "MRC Version %d.%d.%d Build %d\n",
version >> 24 , (version >> 16) & 0xff,
(version >> 8) & 0xff, version & 0xff);
report_memory_config();
if (pei_data->boot_mode != SLEEP_STATE_S3) {
cbmem_initialize_empty();
} else if (cbmem_initialize()) {
#if CONFIG_HAVE_ACPI_RESUME
printk(BIOS_DEBUG, "Failed to recover CBMEM in S3 resume.\n");
/* Failed S3 resume, reset to come up cleanly */
reset_system();
#endif
}
printk(BIOS_DEBUG, "MRC data at %p %d bytes\n", pei_data->data_to_save,
pei_data->data_to_save_size);
if (pei_data->data_to_save != NULL && pei_data->data_to_save_size > 0)
mrc_cache_stash_data(pei_data->data_to_save,
pei_data->data_to_save_size);
}
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