[u-boot.git] / board / samsung / origen / tools / mkorigenspl.c

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

#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 (ofd < 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];

	*(unsigned long *)buffer ^= 0x1f;
	*(unsigned long *)(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
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
98a48c5d CK	2	/*
98a48c5d CK	3	* Copyright (C) 2011 Samsung Electronics
98a48c5d CK	4	*/
	5
	6	#include <stdio.h>
	7	#include <stdlib.h>
	8	#include <unistd.h>
	9	#include <fcntl.h>
	10	#include <errno.h>
	11	#include <string.h>
	12	#include <sys/stat.h>
	13
	14	#define BUFSIZE (16*1024)
	15	#define IMG_SIZE (16*1024)
	16	#define SPL_HEADER_SIZE 16
	17	#define FILE_PERM (S_IRUSR \| S_IWUSR \| S_IRGRP \
	18	\| S_IWGRP \| S_IROTH \| S_IWOTH)
	19	#define SPL_HEADER "S5PC210 HEADER "
	20	/*
	21	* Requirement:
	22	* IROM code reads first 14K bytes from boot device.
	23	* It then calculates the checksum of 14K-4 bytes and compare with data at
	24	* 14K-4 offset.
	25	*
	26	* This function takes two filenames:
	27	* IN "u-boot-spl.bin" and
	28	* OUT "$(BOARD)-spl.bin as filenames.
	29	* It reads the "u-boot-spl.bin" in 16K buffer.
	30	* It calculates checksum of 14K-4 Bytes and stores at 14K-4 offset in buffer.
	31	* It writes the buffer to "$(BOARD)-spl.bin" file.
	32	*/
	33
	34	int main(int argc, char **argv)
	35	{
	36	int i, len;
	37	unsigned char buffer[BUFSIZE] = {0};
	38	int ifd, ofd;
	39	unsigned int checksum = 0, count;
	40
	41	if (argc != 3) {
	42	printf(" %d Wrong number of arguments\n", argc);
	43	exit(EXIT_FAILURE);
	44	}
	45
	46	ifd = open(argv[1], O_RDONLY);
	47	if (ifd < 0) {
	48	fprintf(stderr, "%s: Can't open %s: %s\n",
	49	argv[0], argv[1], strerror(errno));
	50	exit(EXIT_FAILURE);
	51	}
	52
	53	ofd = open(argv[2], O_WRONLY \| O_CREAT \| O_TRUNC, FILE_PERM);
310ae37e	54	if (ofd < 0) {
98a48c5d CK	55	fprintf(stderr, "%s: Can't open %s: %s\n",
	56	argv[0], argv[2], strerror(errno));
	57	if (ifd)
	58	close(ifd);
	59	exit(EXIT_FAILURE);
	60	}
	61
	62	len = lseek(ifd, 0, SEEK_END);
	63	lseek(ifd, 0, SEEK_SET);
	64
	65	memcpy(&buffer[0], SPL_HEADER, SPL_HEADER_SIZE);
	66
	67	count = (len < (IMG_SIZE - SPL_HEADER_SIZE))
	68	? len : (IMG_SIZE - SPL_HEADER_SIZE);
	69
	70	if (read(ifd, buffer + SPL_HEADER_SIZE, count) != count) {
	71	fprintf(stderr, "%s: Can't read %s: %s\n",
	72	argv[0], argv[1], strerror(errno));
	73
	74	if (ifd)
	75	close(ifd);
	76	if (ofd)
	77	close(ofd);
	78
	79	exit(EXIT_FAILURE);
	80	}
	81
	82	for (i = 0; i < IMG_SIZE - SPL_HEADER_SIZE; i++)
	83	checksum += buffer[i+16];
	84
2e33df80 AB	85	(unsigned long )buffer ^= 0x1f;
2e33df80 AB	86	(unsigned long )(buffer+4) ^= checksum;
98a48c5d CK	87
	88	for (i = 1; i < SPL_HEADER_SIZE; i++)
	89	buffer[i] ^= buffer[i-1];
	90
	91	if (write(ofd, buffer, BUFSIZE) != BUFSIZE) {
	92	fprintf(stderr, "%s: Can't write %s: %s\n",
	93	argv[0], argv[2], strerror(errno));
	94
	95	if (ifd)
	96	close(ifd);
	97	if (ofd)
	98	close(ofd);
	99
	100	exit(EXIT_FAILURE);
	101	}
	102
	103	if (ifd)
	104	close(ifd);
	105	if (ofd)
	106	close(ofd);
	107
	108	return EXIT_SUCCESS;
	109	}