mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-25 14:10:43 +00:00
81e352032c
This patch adds support for MMC SPL booting. Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
122 lines
3 KiB
C
122 lines
3 KiB
C
/*
|
|
* Copyright (C) 2012 Samsung Electronics
|
|
*
|
|
* 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 <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <sys/stat.h>
|
|
#include <compiler.h>
|
|
|
|
#define CHECKSUM_OFFSET (14*1024-4)
|
|
#define BUFSIZE (14*1024)
|
|
#define FILE_PERM (S_IRUSR | S_IWUSR | S_IRGRP \
|
|
| S_IWGRP | S_IROTH | S_IWOTH)
|
|
/*
|
|
* Requirement:
|
|
* IROM code reads first 14K bytes from boot device.
|
|
* It then calculates the checksum of 14K-4 bytes and compare with data at
|
|
* 14K-4 offset.
|
|
*
|
|
* This function takes two filenames:
|
|
* IN "u-boot-spl.bin" and
|
|
* OUT "$(BOARD)-spl.bin as filenames.
|
|
* It reads the "u-boot-spl.bin" in 16K buffer.
|
|
* It calculates checksum of 14K-4 Bytes and stores at 14K-4 offset in buffer.
|
|
* It writes the buffer to "$(BOARD)-spl.bin" file.
|
|
*/
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
unsigned char buffer[BUFSIZE];
|
|
int i, ifd, ofd;
|
|
uint32_t checksum = 0;
|
|
off_t len;
|
|
ssize_t count;
|
|
struct stat stat;
|
|
|
|
if (argc != 3) {
|
|
fprintf(stderr, "Usage: %s <infile> <outfile>\n", argv[0]);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
ifd = open(argv[1], O_RDONLY);
|
|
if (ifd < 0) {
|
|
fprintf(stderr, "%s: Can't open %s: %s\n",
|
|
argv[0], argv[1], strerror(errno));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
ofd = open(argv[2], O_WRONLY | O_CREAT | O_TRUNC, FILE_PERM);
|
|
if (ifd < 0) {
|
|
fprintf(stderr, "%s: Can't open %s: %s\n",
|
|
argv[0], argv[2], strerror(errno));
|
|
close(ifd);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (fstat(ifd, &stat)) {
|
|
fprintf(stderr, "%s: Unable to get size of %s: %s\n",
|
|
argv[0], argv[1], strerror(errno));
|
|
close(ifd);
|
|
close(ofd);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
len = stat.st_size;
|
|
|
|
count = (len < CHECKSUM_OFFSET) ? len : CHECKSUM_OFFSET;
|
|
|
|
if (read(ifd, buffer, count) != count) {
|
|
fprintf(stderr, "%s: Can't read %s: %s\n",
|
|
argv[0], argv[1], strerror(errno));
|
|
|
|
close(ifd);
|
|
close(ofd);
|
|
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
for (i = 0, checksum = 0; i < CHECKSUM_OFFSET; i++)
|
|
checksum += buffer[i];
|
|
|
|
checksum = cpu_to_le32(checksum);
|
|
|
|
memcpy(&buffer[CHECKSUM_OFFSET], &checksum, sizeof(checksum));
|
|
|
|
if (write(ofd, buffer, BUFSIZE) != BUFSIZE) {
|
|
fprintf(stderr, "%s: Can't write %s: %s\n",
|
|
argv[0], argv[2], strerror(errno));
|
|
|
|
close(ifd);
|
|
close(ofd);
|
|
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
close(ifd);
|
|
close(ofd);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|