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/* Copyright 2021 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.
*/
/* Support Cros Board Info GPIO */
#include "console.h"
#include "cros_board_info.h"
#include "gpio.h"
#include "system.h"
#include "util.h"
#define CPRINTS(format, args...) cprints(CC_SYSTEM, "CBI " format, ## args)
static int cbi_gpio_read(uint8_t offset, uint8_t *data, int len)
{
int board_id;
int sku_id;
int rv;
int err = 0;
if (cbi_get_cache_status() == CBI_CACHE_STATUS_SYNCED)
return EC_SUCCESS;
cbi_create();
board_id = system_get_board_version();
if (board_id < 0) {
CPRINTS("Failed (%d) to get a valid board id", -board_id);
err++;
} else {
rv = cbi_set_board_info(CBI_TAG_BOARD_VERSION,
(uint8_t *)&board_id, sizeof(int));
if (rv) {
CPRINTS("Failed (%d) to set BOARD_VERSION tag", rv);
err++;
}
}
sku_id = system_get_sku_id();
rv = cbi_set_board_info(CBI_TAG_SKU_ID,
(uint8_t *)&sku_id, sizeof(int));
if (rv) {
CPRINTS("Failed (%d) to set SKU_ID tag", rv);
err++;
}
if (err > 0)
return EC_ERROR_UNKNOWN;
return EC_SUCCESS;
}
static int cbi_gpio_is_write_protected(void)
{
/*
* When CBI comes from strapping pins, any attempts for updating CBI
* storage should be rejected.
*/
return 1;
}
const struct cbi_storage_driver gpio_drv = {
.load = cbi_gpio_read,
.is_protected = cbi_gpio_is_write_protected,
};
const struct cbi_storage_config_t cbi_config = {
.storage_type = CBI_STORAGE_TYPE_GPIO,
.drv = &gpio_drv,
};
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