73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2017 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <bootstate.h>
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#include <console/console.h>
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#include <ec/google/chromeec/ec.h>
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#include <elog.h>
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#include <halt.h>
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#include <tpm_lite/tlcl.h>
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#include <vb2_api.h>
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#include <vboot/vboot_common.h>
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static void enable_update(void *unused)
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{
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int ret;
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uint8_t num_restored_headers;
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/* Nothing to do on recovery mode. */
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if (vboot_recovery_mode_enabled())
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return;
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ret = tlcl_lib_init();
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if (ret != VB2_SUCCESS) {
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printk(BIOS_ERR, "tlcl_lib_init() failed for CR50 update: %x\n",
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ret);
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return;
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}
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/* Reboot in 1000 ms if necessary. */
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ret = tlcl_cr50_enable_update(1000, &num_restored_headers);
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if (ret != TPM_SUCCESS) {
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printk(BIOS_ERR, "Attempt to enable CR50 update failed: %x\n",
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ret);
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return;
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}
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/* If no headers were restored there is no reset forthcoming. */
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if (!num_restored_headers)
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return;
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elog_add_event(ELOG_TYPE_CR50_UPDATE);
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/* clear current post code avoid chatty eventlog on subsequent boot*/
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post_code(0);
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printk(BIOS_INFO, "Waiting for CR50 reset to pick up update.\n");
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if (IS_ENABLED(CONFIG_POWER_OFF_ON_CR50_UPDATE)) {
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if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC))
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printk(BIOS_INFO, "Hibernating EC.\n");
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google_chromeec_reboot(0, EC_REBOOT_HIBERNATE,
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EC_REBOOT_FLAG_ON_AP_SHUTDOWN);
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poweroff();
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}
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halt();
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}
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BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_ENTRY, enable_update, NULL);
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