[people/ms/u-boot.git] / board / samsung / origen / tools / mkv310_image.c

/*
 * Copyright (C) 2011 Samsung Electronics
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>

#define BUFSIZE			(16*1024)
#define IMG_SIZE		(16*1024)
#define SPL_HEADER_SIZE		16
#define FILE_PERM		(S_IRUSR | S_IWUSR | S_IRGRP \
				| S_IWGRP | S_IROTH | S_IWOTH)
#define SPL_HEADER		"S5PC210 HEADER  "
/*
* 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)
{
	int i, len;
	unsigned char buffer[BUFSIZE] = {0};
	int ifd, ofd;
	unsigned int checksum = 0, count;

	if (argc != 3) {
		printf(" %d Wrong number of arguments\n", argc);
		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));
		if (ifd)
			close(ifd);
		exit(EXIT_FAILURE);
	}

	len = lseek(ifd, 0, SEEK_END);
	lseek(ifd, 0, SEEK_SET);

	memcpy(&buffer[0], SPL_HEADER, SPL_HEADER_SIZE);

	count = (len < (IMG_SIZE - SPL_HEADER_SIZE))
		? len : (IMG_SIZE - SPL_HEADER_SIZE);

	if (read(ifd, buffer + SPL_HEADER_SIZE, count) != count) {
		fprintf(stderr, "%s: Can't read %s: %s\n",
			argv[0], argv[1], strerror(errno));

		if (ifd)
			close(ifd);
		if (ofd)
			close(ofd);

		exit(EXIT_FAILURE);
	}

	for (i = 0; i < IMG_SIZE - SPL_HEADER_SIZE; i++)
		checksum += buffer[i+16];

	*(ulong *)buffer ^= 0x1f;
	*(ulong *)(buffer+4) ^= checksum;

	for (i = 1; i < SPL_HEADER_SIZE; i++)
		buffer[i] ^= buffer[i-1];

	if (write(ofd, buffer, BUFSIZE) != BUFSIZE) {
		fprintf(stderr, "%s: Can't write %s: %s\n",
			argv[0], argv[2], strerror(errno));

		if (ifd)
			close(ifd);
		if (ofd)
			close(ofd);

		exit(EXIT_FAILURE);
	}

	if (ifd)
		close(ifd);
	if (ofd)
		close(ofd);

	return EXIT_SUCCESS;
}
Commit	Line	Data
98a48c5d CK	1	/*
	2	* Copyright (C) 2011 Samsung Electronics
	3	*
1a459660	4	* SPDX-License-Identifier: GPL-2.0+
98a48c5d CK	5	*/
	6
	7	#include <stdio.h>
	8	#include <stdlib.h>
	9	#include <unistd.h>
	10	#include <fcntl.h>
	11	#include <errno.h>
	12	#include <string.h>
	13	#include <sys/stat.h>
	14
	15	#define BUFSIZE (16*1024)
	16	#define IMG_SIZE (16*1024)
	17	#define SPL_HEADER_SIZE 16
	18	#define FILE_PERM (S_IRUSR \| S_IWUSR \| S_IRGRP \
	19	\| S_IWGRP \| S_IROTH \| S_IWOTH)
	20	#define SPL_HEADER "S5PC210 HEADER "
	21	/*
	22	* Requirement:
	23	* IROM code reads first 14K bytes from boot device.
	24	* It then calculates the checksum of 14K-4 bytes and compare with data at
	25	* 14K-4 offset.
	26	*
	27	* This function takes two filenames:
	28	* IN "u-boot-spl.bin" and
	29	* OUT "$(BOARD)-spl.bin as filenames.
	30	* It reads the "u-boot-spl.bin" in 16K buffer.
	31	* It calculates checksum of 14K-4 Bytes and stores at 14K-4 offset in buffer.
	32	* It writes the buffer to "$(BOARD)-spl.bin" file.
	33	*/
	34
	35	int main(int argc, char **argv)
	36	{
	37	int i, len;
	38	unsigned char buffer[BUFSIZE] = {0};
	39	int ifd, ofd;
	40	unsigned int checksum = 0, count;
	41
	42	if (argc != 3) {
	43	printf(" %d Wrong number of arguments\n", argc);
	44	exit(EXIT_FAILURE);
	45	}
	46
	47	ifd = open(argv[1], O_RDONLY);
	48	if (ifd < 0) {
	49	fprintf(stderr, "%s: Can't open %s: %s\n",
	50	argv[0], argv[1], strerror(errno));
	51	exit(EXIT_FAILURE);
	52	}
	53
	54	ofd = open(argv[2], O_WRONLY \| O_CREAT \| O_TRUNC, FILE_PERM);
	55	if (ifd < 0) {
	56	fprintf(stderr, "%s: Can't open %s: %s\n",
	57	argv[0], argv[2], strerror(errno));
	58	if (ifd)
	59	close(ifd);
	60	exit(EXIT_FAILURE);
	61	}
	62
	63	len = lseek(ifd, 0, SEEK_END);
	64	lseek(ifd, 0, SEEK_SET);
	65
	66	memcpy(&buffer[0], SPL_HEADER, SPL_HEADER_SIZE);
	67
	68	count = (len < (IMG_SIZE - SPL_HEADER_SIZE))
69	? len : (IMG_SIZE - SPL_HEADER_SIZE);
70
71	if (read(ifd, buffer + SPL_HEADER_SIZE, count) != count) {
72	fprintf(stderr, "%s: Can't read %s: %s\n",
73	argv[0], argv[1], strerror(errno));
74
75	if (ifd)
76	close(ifd);
77	if (ofd)
78	close(ofd);
79
80	exit(EXIT_FAILURE);
81	}
82
83	for (i = 0; i < IMG_SIZE - SPL_HEADER_SIZE; i++)
84	checksum += buffer[i+16];
85
86	(ulong )buffer ^= 0x1f;
87	(ulong )(buffer+4) ^= checksum;
88
89	for (i = 1; i < SPL_HEADER_SIZE; i++)
90	buffer[i] ^= buffer[i-1];
91
92	if (write(ofd, buffer, BUFSIZE) != BUFSIZE) {
93	fprintf(stderr, "%s: Can't write %s: %s\n",
94	argv[0], argv[2], strerror(errno));
95
96	if (ifd)
97	close(ifd);
98	if (ofd)
99	close(ofd);
100
101	exit(EXIT_FAILURE);
102	}
103
104	if (ifd)
105	close(ifd);
106	if (ofd)
107	close(ofd);
108
109	return EXIT_SUCCESS;
110	}