blob: 2363bf9588b05d8e38e77a0f7adb41f934b11d7d [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright 2016 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.
*/
#include <assert.h>
#include <bootmode.h>
#include <bootstate.h>
#include <cbmem.h>
#include <vb2_api.h>
#include <security/vboot/misc.h>
#include <security/vboot/vbnv.h>
#include <security/vboot/vboot_common.h>
/*
* Functions which check vboot information should only be called after verstage
* has run. Otherwise, they will hit the assertion in vboot_get_context().
*/
int vboot_check_recovery_request(void)
{
return vb2api_get_recovery_reason(vboot_get_context());
}
int vboot_recovery_mode_enabled(void)
{
return vboot_get_context()->flags & VB2_CONTEXT_RECOVERY_MODE;
}
int vboot_developer_mode_enabled(void)
{
return vboot_get_context()->flags & VB2_CONTEXT_DEVELOPER_MODE;
}
int __weak clear_recovery_mode_switch(void)
{
return 0;
}
static void do_clear_recovery_mode_switch(void *unused)
{
if (vboot_get_context()->flags & VB2_CONTEXT_FORCE_RECOVERY_MODE)
clear_recovery_mode_switch();
}
/*
* The recovery mode switch (typically backed by EC) is not cleared until
* BS_WRITE_TABLES for two reasons:
*
* (1) On some platforms, FSP initialization may cause a reboot. Push clearing
* the recovery mode switch until after FSP code runs, so that a manual recovery
* request (three-finger salute) will function correctly under this condition.
*
* (2) To give the implementation of clear_recovery_mode_switch a chance to
* add an event to elog. See the function in chromeec/switches.c.
*/
BOOT_STATE_INIT_ENTRY(BS_WRITE_TABLES, BS_ON_ENTRY,
do_clear_recovery_mode_switch, NULL);
int __weak get_recovery_mode_retrain_switch(void)
{
return 0;
}
int vboot_recovery_mode_memory_retrain(void)
{
return get_recovery_mode_retrain_switch();
}
#if CONFIG(VBOOT_NO_BOARD_SUPPORT)
/**
* TODO: Create flash protection interface which implements get_write_protect_state.
* get_recovery_mode_switch should be implemented as default function.
*/
int __weak get_write_protect_state(void)
{
return 0;
}
int __weak get_recovery_mode_switch(void)
{
return 0;
}
#endif