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/* Copyright 2018 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "board_id.h"
#include "console.h"
#include "system.h"
#define CPRINTS(format, args...) cprints(CC_CCD, format, ## args)
#define CPRINTF(format, args...) cprintf(CC_CCD, format, ## args)
static int board_id_is_erased(void)
{
struct board_id id;
/*
* If we can't read the board id for some reason, return 0 just to be
* safe
*/
if (read_board_id(&id) != EC_SUCCESS) {
CPRINTS("%s: BID read error", __func__);
return 0;
}
/* If all of the fields are all 0xffffffff, the board id is not set */
if (~(id.type & id.type_inv & id.flags) == 0) {
CPRINTS("BID erased");
return 1;
}
return 0;
}
static int inactive_image_is_guc_image(void)
{
enum system_image_copy_t inactive_copy;
const struct SignedHeader *other;
if (system_get_image_copy() == SYSTEM_IMAGE_RW_A)
inactive_copy = SYSTEM_IMAGE_RW_B;
else
inactive_copy = SYSTEM_IMAGE_RW_A;
other = (struct SignedHeader *) get_program_memory_addr(
inactive_copy);
/*
* Chips from GUC are manufactured with 0.0.13 or 0.0.22. Compare the
* versions to determine if the inactive image is a GUC image.
*/
if (other->epoch_ == 0 && other->major_ == 0 &&
((other->minor_ == 13) || (other->minor_ == 22))) {
CPRINTS("GUC in inactive RW");
return 1;
}
/*
* TODO(mruthven): Return true if factory image field of header is
* set
*/
return 0;
}
/**
* Return non-zero if this is the first boot of a board in the factory.
*
* This is used to determine whether the default CCD configuration will be RMA
* (things are unlocked for factory) or normal (things locked down because not
* in factory).
*
* checks:
* - If the system recovered from reboot not deep sleep resume.
* - If the board ID exists, this is not the first boot
* - If the inactive image is not a GUC image, then we've left the factory
*/
int board_is_first_factory_boot(void)
{
return (!(system_get_reset_flags() & RESET_FLAG_HIBERNATE) &&
inactive_image_is_guc_image() && board_id_is_erased());
}
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