blob: 422967bb381305a351cdda9cf3dc41bbe4cdfe29 [file] [log] [blame]
/*
* Copyright 2011, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* libfmap_example: Simple example for creating a flashmap.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fmap.h>
/* stuff that should be passed in by higher-level logic, ie firmware build
* system, parsed from a config file, etc. */
#define FMAP_BASE 0xfc000000
#define FMAP_NAME "x86_BIOS"
#define FMAP_SIZE (4096 * 1024)
int main(int argc, char *argv[])
{
int fd, rc = EXIT_FAILURE;
struct fmap *fmap = NULL;
size_t total_size;
const char *filename;
if (argc != 2) {
printf("%s: Create fmap binary using example code\n", argv[0]);
printf("Usage: %s <filename>\n", argv[0]);
goto exit_1;
}
filename = argv[1];
fd = open(filename, O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
if (fd < 0) {
fprintf(stderr, "unable to open file \"%s\": %s\n",
filename, strerror(errno));
goto exit_1;
}
fmap = fmap_create(FMAP_BASE, FMAP_SIZE, (uint8_t *)FMAP_NAME);
if (!fmap) {
fprintf(stderr, "unable to initialize fmap\n");
goto exit_2;
}
if (fmap_append_area(&fmap, FMAP_BASE, 0x100,
(const uint8_t *)"area_1",
FMAP_AREA_STATIC) < 0)
goto exit_3;
if (fmap_append_area(&fmap, FMAP_BASE + 0x100, 0x100,
(const uint8_t *)"area_2",
FMAP_AREA_COMPRESSED) < 0)
goto exit_3;
if (fmap_append_area(&fmap, FMAP_BASE + 0x200, 0x100,
(const uint8_t *)"area_3",
FMAP_AREA_RO) < 0)
goto exit_3;
if (fmap_append_area(&fmap, FMAP_BASE + 0x300, 0x100,
(const uint8_t *)"area_4",
FMAP_AREA_COMPRESSED | FMAP_AREA_RO) <0)
goto exit_3;
fmap_print(fmap);
total_size = fmap_size(fmap);
if (write(fd, fmap, total_size) != total_size) {
fprintf(stderr, "failed to write \"%s\": %s\n",
filename, strerror(errno));
goto exit_3;
}
rc = EXIT_SUCCESS;
exit_3:
fmap_destroy(fmap);
exit_2:
close(fd);
exit_1:
return rc;
}