src/vboot/callbacks/nvstorage.c

/*
 * Copyright 2016 Google Inc.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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; either version 2 of
 * the License, or (at your option) any later version.
 *
 * 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., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <stdio.h>
#include <vboot_api.h>

#include "drivers/storage/storage.h"
#include "vboot/board.h"

VbError_t VbExNvStorageRead(uint8_t* buf)
{
	StorageOps *storage = board_storage_vboot_nvstorage();
	if (storage_size(storage) != VBNV_BLOCK_SIZE) {
		printf("NV storage is the wrong size.\n");
		return VBERROR_UNKNOWN;
	}

	if (storage_read(storage, buf, 0, VBNV_BLOCK_SIZE))
		return VBERROR_UNKNOWN;

	return VBERROR_SUCCESS;
}

VbError_t VbExNvStorageWrite(const uint8_t* buf)
{
	StorageOps *storage = board_storage_vboot_nvstorage();
	if (storage_size(storage) != VBNV_BLOCK_SIZE) {
		printf("NV storage is the wrong size.\n");
		return VBERROR_UNKNOWN;
	}

	if (storage_write(storage, buf, 0, VBNV_BLOCK_SIZE))
		return VBERROR_UNKNOWN;

	return VBERROR_SUCCESS;
}