src/include/cbfs.h

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
 * Copyright (C) 2013-2015 Google, Inc.
 *
 * This file is dual-licensed. You can choose between:
 *   - The GNU GPL, version 2, as published by the Free Software Foundation
 *   - The revised BSD license (without advertising clause)
 *
 * ---------------------------------------------------------------------------
 * 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.
 *
 * 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.
 * ---------------------------------------------------------------------------
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ---------------------------------------------------------------------------
 */

#ifndef _CBFS_H_
#define _CBFS_H_

#include <cbfs_core.h>

int init_backing_media(struct cbfs_media **media, struct cbfs_media *backing);
void *cbfs_load_optionrom(struct cbfs_media *media, uint16_t vendor,
			  uint16_t device, void * dest);
void *cbfs_load_stage(struct cbfs_media *media, const char *name);
void *cbfs_load_stage_by_offset(struct cbfs_media *media, ssize_t offset);
/* Load a stage from a prog structure. Returns < 0 on error. 0 on success. */
struct prog;
int cbfs_load_prog_stage(struct cbfs_media *media, struct prog *prog);
int cbfs_load_prog_stage_by_offset(struct cbfs_media *media,
					struct prog *prog, ssize_t offset);

/* Simple buffer for streaming media. */
struct cbfs_simple_buffer {
	char *buffer;
	size_t allocated;
	size_t size;
	size_t last_allocate;
};

void *cbfs_simple_buffer_map(struct cbfs_simple_buffer *buffer,
			     struct cbfs_media *media,
			     size_t offset, size_t count);

void *cbfs_simple_buffer_unmap(struct cbfs_simple_buffer *buffer,
			       const void *address);


/*
 * Defined in individual arch / board implementation.
 *
 * it returns 0 on success and non-zero on error.
 */
int init_default_cbfs_media(struct cbfs_media *media);

#if (IS_ENABLED(CONFIG_MULTIPLE_CBFS_INSTANCES))
void cbfs_set_header_offset(size_t offset);
#else
static inline void cbfs_set_header_offset(size_t offset) {}
#endif
#endif