tools/pblimage.c - platform/external/u-boot - Gitiles

 /*
  * Copyright 2012 Freescale Semiconductor, Inc.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
 #define _GNU_SOURCE

 #include "mkimage.h"
 #include <image.h>
 #include "pblimage.h"

 /*
  * Initialize to an invalid value.
  */
 static uint32_t next_pbl_cmd = 0x82000000;
 /*
  * need to store all bytes in memory for calculating crc32, then write the
  * bytes to image file for PBL boot.
  */
 static unsigned char mem_buf[1000000];
 static unsigned char *pmem_buf = mem_buf;
 static int pbl_size;
 static char *fname = "Unknown";
 static int lineno = -1;
 static struct pbl_header pblimage_header;

 static union
 {
 	char c[4];
 	unsigned char l;
 } endian_test = { {'l', '?', '?', 'b'} };

 #define ENDIANNESS ((char)endian_test.l)

 /*
  * The PBL can load up to 64 bytes at a time, so we split the U-Boot
  * image into 64 byte chunks. PBL needs a command for each piece, of
  * the form "81xxxxxx", where "xxxxxx" is the offset. Calculate the
  * start offset by subtracting the size of the u-boot image from the
  * top of the allowable 24-bit range.
  */
 static void init_next_pbl_cmd(FILE *fp_uboot)
 {
 	struct stat st;
 	int fd = fileno(fp_uboot);

 	if (fstat(fd, &st) == -1) {
 		printf("Error: Could not determine u-boot image size. %s\n",
 			strerror(errno));
 		exit(EXIT_FAILURE);
 	}

 	next_pbl_cmd = 0x82000000 - st.st_size;
 }

 static void generate_pbl_cmd(void)
 {
 	uint32_t val = next_pbl_cmd;
 	next_pbl_cmd += 0x40;
 	int i;

 	for (i = 3; i >= 0; i--) {
 		*pmem_buf++ = (val >> (i * 8)) & 0xff;
 		pbl_size++;
 	}
 }

 static void pbl_fget(size_t size, FILE *stream)
 {
 	unsigned char c;
 	int c_temp;

 	while (size && (c_temp = fgetc(stream)) != EOF) {
 		c = (unsigned char)c_temp;
 		*pmem_buf++ = c;
 		pbl_size++;
 		size--;
 	}
 }

 /* load split u-boot with PBI command 81xxxxxx. */
 static void load_uboot(FILE *fp_uboot)
 {
 	init_next_pbl_cmd(fp_uboot);
 	while (next_pbl_cmd < 0x82000000) {
 		generate_pbl_cmd();
 		pbl_fget(64, fp_uboot);
 	}
 }

 static void check_get_hexval(char *token)
 {
 	uint32_t hexval;
 	int i;

 	if (!sscanf(token, "%x", &hexval)) {
 		printf("Error:%s[%d] - Invalid hex data(%s)\n", fname,
 			lineno, token);
 		exit(EXIT_FAILURE);
 	}
 	for (i = 3; i >= 0; i--) {
 		*pmem_buf++ = (hexval >> (i * 8)) & 0xff;
 		pbl_size++;
 	}
 }

 static void pbl_parser(char *name)
 {
 	FILE *fd = NULL;
 	char *line = NULL;
 	char *token, *saveptr1, *saveptr2;
 	size_t len = 0;

 	fname = name;
 	fd = fopen(name, "r");
 	if (fd == NULL) {
 		printf("Error:%s - Can't open\n", fname);
 		exit(EXIT_FAILURE);
 	}

 	while ((getline(&line, &len, fd)) > 0) {
 		lineno++;
 		token = strtok_r(line, "\r\n", &saveptr1);
 		/* drop all lines with zero tokens (= empty lines) */
 		if (token == NULL)
 			continue;
 		for (line = token;; line = NULL) {
 			token = strtok_r(line, " \t", &saveptr2);
 			if (token == NULL)
 				break;
 			/* Drop all text starting with '#' as comments */
 			if (token[0] == '#')
 				break;
 			check_get_hexval(token);
 		}
 	}
 	if (line)
 		free(line);
 	fclose(fd);
 }

 static uint32_t crc_table[256];

 static void make_crc_table(void)
 {
 	uint32_t mask;
 	int i, j;
 	uint32_t poly; /* polynomial exclusive-or pattern */

 	/*
 	 * the polynomial used by PBL is 1 + x1 + x2 + x4 + x5 + x7 + x8 + x10
 	 * + x11 + x12 + x16 + x22 + x23 + x26 + x32.
 	 */
 	poly = 0x04c11db7;

 	for (i = 0; i < 256; i++) {
 		mask = i << 24;
 		for (j = 0; j < 8; j++) {
 			if (mask & 0x80000000)
 				mask = (mask << 1) ^ poly;
 			else
 				mask <<= 1;
 		}
 		crc_table[i] = mask;
 	}
 }

 unsigned long pbl_crc32(unsigned long crc, const char *buf, uint32_t len)
 {
 	uint32_t crc32_val = 0xffffffff;
 	uint32_t xor = 0x0;
 	int i;

 	make_crc_table();

 	for (i = 0; i < len; i++)
 		crc32_val = (crc32_val << 8) ^
 			crc_table[(crc32_val >> 24) ^ (*buf++ & 0xff)];

 	crc32_val = crc32_val ^ xor;
 	if (crc32_val < 0) {
 		crc32_val += 0xffffffff;
 		crc32_val += 1;
 	}
 	return crc32_val;
 }

 static uint32_t reverse_byte(uint32_t val)
 {
 	uint32_t temp;
 	unsigned char *p1;
 	int j;

 	temp = val;
 	p1 = (unsigned char *)&temp;
 	for (j = 3; j >= 0; j--)
 		*p1++ = (val >> (j * 8)) & 0xff;
 	return temp;
 }

 /* write end command and crc command to memory. */
 static void add_end_cmd(void)
 {
 	uint32_t pbl_end_cmd[4] = {0x09138000, 0x00000000,
 		0x091380c0, 0x00000000};
 	uint32_t crc32_pbl;
 	int i;
 	unsigned char *p = (unsigned char *)&pbl_end_cmd;

 	if (ENDIANNESS == 'l') {
 		for (i = 0; i < 4; i++)
 			pbl_end_cmd[i] = reverse_byte(pbl_end_cmd[i]);
 	}

 	for (i = 0; i < 16; i++) {
 		*pmem_buf++ = *p++;
 		pbl_size++;
 	}

 	/* Add PBI CRC command. */
 	*pmem_buf++ = 0x08;
 	*pmem_buf++ = 0x13;
 	*pmem_buf++ = 0x80;
 	*pmem_buf++ = 0x40;
 	pbl_size += 4;

 	/* calculated CRC32 and write it to memory. */
 	crc32_pbl = pbl_crc32(0, (const char *)mem_buf, pbl_size);
 	*pmem_buf++ = (crc32_pbl >> 24) & 0xff;
 	*pmem_buf++ = (crc32_pbl >> 16) & 0xff;
 	*pmem_buf++ = (crc32_pbl >> 8) & 0xff;
 	*pmem_buf++ = (crc32_pbl) & 0xff;
 	pbl_size += 4;

 	if ((pbl_size % 16) != 0) {
 		for (i = 0; i < 8; i++) {
 			*pmem_buf++ = 0x0;
 			pbl_size++;
 		}
 	}
 	if ((pbl_size % 16 != 0)) {
 		printf("Error: Bad size of image file\n");
 		exit(EXIT_FAILURE);
 	}
 }

 void pbl_load_uboot(int ifd, struct mkimage_params *params)
 {
 	FILE *fp_uboot;
 	int size;

 	/* parse the rcw.cfg file. */
 	pbl_parser(params->imagename);

 	/* parse the pbi.cfg file. */
 	pbl_parser(params->imagename2);

 	fp_uboot = fopen(params->datafile, "r");
 	if (fp_uboot == NULL) {
 		printf("Error: %s open failed\n", params->datafile);
 		exit(EXIT_FAILURE);
 	}

 	load_uboot(fp_uboot);
 	add_end_cmd();
 	fclose(fp_uboot);
 	lseek(ifd, 0, SEEK_SET);

 	size = pbl_size;
 	if (write(ifd, (const void *)&mem_buf, size) != size) {
 		fprintf(stderr, "Write error on %s: %s\n",
 			params->imagefile, strerror(errno));
 		exit(EXIT_FAILURE);
 	}
 }

 static int pblimage_check_image_types(uint8_t type)
 {
 	if (type == IH_TYPE_PBLIMAGE)
 		return EXIT_SUCCESS;
 	else
 		return EXIT_FAILURE;
 }

 static int pblimage_verify_header(unsigned char *ptr, int image_size,
 			struct mkimage_params *params)
 {
 	struct pbl_header *pbl_hdr = (struct pbl_header *) ptr;

 	/* Only a few checks can be done: search for magic numbers */
 	if (ENDIANNESS == 'l') {
 		if (pbl_hdr->preamble != reverse_byte(RCW_PREAMBLE))
 			return -FDT_ERR_BADSTRUCTURE;

 		if (pbl_hdr->rcwheader != reverse_byte(RCW_HEADER))
 			return -FDT_ERR_BADSTRUCTURE;
 	} else {
 		if (pbl_hdr->preamble != RCW_PREAMBLE)
 			return -FDT_ERR_BADSTRUCTURE;

 		if (pbl_hdr->rcwheader != RCW_HEADER)
 			return -FDT_ERR_BADSTRUCTURE;
 	}
 	return 0;
 }

 static void pblimage_print_header(const void *ptr)
 {
 	printf("Image Type:   Freescale PBL Boot Image\n");
 }

 static void pblimage_set_header(void *ptr, struct stat *sbuf, int ifd,
 				struct mkimage_params *params)
 {
 	/*nothing need to do, pbl_load_uboot takes care of whole file. */
 }

 /* pblimage parameters */
 static struct image_type_params pblimage_params = {
 	.name		= "Freescale PBL Boot Image support",
 	.header_size	= sizeof(struct pbl_header),
 	.hdr		= (void *)&pblimage_header,
 	.check_image_type = pblimage_check_image_types,
 	.verify_header	= pblimage_verify_header,
 	.print_header	= pblimage_print_header,
 	.set_header	= pblimage_set_header,
 };

 void init_pbl_image_type(void)
 {
 	pbl_size = 0;
 	mkimage_register(&pblimage_params);
 }
	/*
	* Copyright 2012 Freescale Semiconductor, Inc.
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/
	#define _GNU_SOURCE

	#include "mkimage.h"
	#include <image.h>
	#include "pblimage.h"

	/*
	* Initialize to an invalid value.
	*/
	static uint32_t next_pbl_cmd = 0x82000000;
	/*
	* need to store all bytes in memory for calculating crc32, then write the
	* bytes to image file for PBL boot.
	*/
	static unsigned char mem_buf[1000000];
	static unsigned char *pmem_buf = mem_buf;
	static int pbl_size;
	static char *fname = "Unknown";
	static int lineno = -1;
	static struct pbl_header pblimage_header;

	static union
	{
	char c[4];
	unsigned char l;
	} endian_test = { {'l', '?', '?', 'b'} };

	#define ENDIANNESS ((char)endian_test.l)

	/*
	* The PBL can load up to 64 bytes at a time, so we split the U-Boot
	* image into 64 byte chunks. PBL needs a command for each piece, of
	* the form "81xxxxxx", where "xxxxxx" is the offset. Calculate the
	* start offset by subtracting the size of the u-boot image from the
	* top of the allowable 24-bit range.
	*/
	static void init_next_pbl_cmd(FILE *fp_uboot)
	{
	struct stat st;
	int fd = fileno(fp_uboot);

	if (fstat(fd, &st) == -1) {
	printf("Error: Could not determine u-boot image size. %s\n",
	strerror(errno));
	exit(EXIT_FAILURE);
	}

	next_pbl_cmd = 0x82000000 - st.st_size;
	}

	static void generate_pbl_cmd(void)
	{
	uint32_t val = next_pbl_cmd;
	next_pbl_cmd += 0x40;
	int i;

	for (i = 3; i >= 0; i--) {
	pmem_buf++ = (val >> (i 8)) & 0xff;
	pbl_size++;
	}
	}

	static void pbl_fget(size_t size, FILE *stream)
	{
	unsigned char c;
	int c_temp;

	while (size && (c_temp = fgetc(stream)) != EOF) {
	c = (unsigned char)c_temp;
	*pmem_buf++ = c;
	pbl_size++;
	size--;
	}
	}

	/* load split u-boot with PBI command 81xxxxxx. */
	static void load_uboot(FILE *fp_uboot)
	{
	init_next_pbl_cmd(fp_uboot);
	while (next_pbl_cmd < 0x82000000) {
	generate_pbl_cmd();
	pbl_fget(64, fp_uboot);
	}
	}

	static void check_get_hexval(char *token)
	{
	uint32_t hexval;
	int i;

	if (!sscanf(token, "%x", &hexval)) {
	printf("Error:%s[%d] - Invalid hex data(%s)\n", fname,
	lineno, token);
	exit(EXIT_FAILURE);
	}
	for (i = 3; i >= 0; i--) {
	pmem_buf++ = (hexval >> (i 8)) & 0xff;
	pbl_size++;
	}
	}

	static void pbl_parser(char *name)
	{
	FILE *fd = NULL;
	char *line = NULL;
	char token, saveptr1, *saveptr2;
	size_t len = 0;

	fname = name;
	fd = fopen(name, "r");
	if (fd == NULL) {
	printf("Error:%s - Can't open\n", fname);
	exit(EXIT_FAILURE);
	}

	while ((getline(&line, &len, fd)) > 0) {
	lineno++;
	token = strtok_r(line, "\r\n", &saveptr1);
	/* drop all lines with zero tokens (= empty lines) */
	if (token == NULL)
	continue;
	for (line = token;; line = NULL) {
	token = strtok_r(line, " \t", &saveptr2);
	if (token == NULL)
	break;
	/* Drop all text starting with '#' as comments */
	if (token[0] == '#')
	break;
	check_get_hexval(token);
	}
	}
	if (line)
	free(line);
	fclose(fd);
	}

	static uint32_t crc_table[256];

	static void make_crc_table(void)
	{
	uint32_t mask;
	int i, j;
	uint32_t poly; /* polynomial exclusive-or pattern */

	/*
	* the polynomial used by PBL is 1 + x1 + x2 + x4 + x5 + x7 + x8 + x10
	* + x11 + x12 + x16 + x22 + x23 + x26 + x32.
	*/
	poly = 0x04c11db7;

	for (i = 0; i < 256; i++) {
	mask = i << 24;
	for (j = 0; j < 8; j++) {
	if (mask & 0x80000000)
	mask = (mask << 1) ^ poly;
	else
	mask <<= 1;
	}
	crc_table[i] = mask;
	}
	}

	unsigned long pbl_crc32(unsigned long crc, const char *buf, uint32_t len)
	{
	uint32_t crc32_val = 0xffffffff;
	uint32_t xor = 0x0;
	int i;

	make_crc_table();

	for (i = 0; i < len; i++)
	crc32_val = (crc32_val << 8) ^
	crc_table[(crc32_val >> 24) ^ (*buf++ & 0xff)];

	crc32_val = crc32_val ^ xor;
	if (crc32_val < 0) {
	crc32_val += 0xffffffff;
	crc32_val += 1;
	}
	return crc32_val;
	}

	static uint32_t reverse_byte(uint32_t val)
	{
	uint32_t temp;
	unsigned char *p1;
	int j;

	temp = val;
	p1 = (unsigned char *)&temp;
	for (j = 3; j >= 0; j--)
	p1++ = (val >> (j 8)) & 0xff;
	return temp;
	}

	/* write end command and crc command to memory. */
	static void add_end_cmd(void)
	{
	uint32_t pbl_end_cmd[4] = {0x09138000, 0x00000000,
	0x091380c0, 0x00000000};
	uint32_t crc32_pbl;
	int i;
	unsigned char p = (unsigned char )&pbl_end_cmd;

	if (ENDIANNESS == 'l') {
	for (i = 0; i < 4; i++)
	pbl_end_cmd[i] = reverse_byte(pbl_end_cmd[i]);
	}

	for (i = 0; i < 16; i++) {
	pmem_buf++ = p++;
	pbl_size++;
	}

	/* Add PBI CRC command. */
	*pmem_buf++ = 0x08;
	*pmem_buf++ = 0x13;
	*pmem_buf++ = 0x80;
	*pmem_buf++ = 0x40;
	pbl_size += 4;

	/* calculated CRC32 and write it to memory. */
	crc32_pbl = pbl_crc32(0, (const char *)mem_buf, pbl_size);
	*pmem_buf++ = (crc32_pbl >> 24) & 0xff;
	*pmem_buf++ = (crc32_pbl >> 16) & 0xff;
	*pmem_buf++ = (crc32_pbl >> 8) & 0xff;
	*pmem_buf++ = (crc32_pbl) & 0xff;
	pbl_size += 4;

	if ((pbl_size % 16) != 0) {
	for (i = 0; i < 8; i++) {
	*pmem_buf++ = 0x0;
	pbl_size++;
	}
	}
	if ((pbl_size % 16 != 0)) {
	printf("Error: Bad size of image file\n");
	exit(EXIT_FAILURE);
	}
	}

	void pbl_load_uboot(int ifd, struct mkimage_params *params)
	{
	FILE *fp_uboot;
	int size;

	/* parse the rcw.cfg file. */
	pbl_parser(params->imagename);

	/* parse the pbi.cfg file. */
	pbl_parser(params->imagename2);

	fp_uboot = fopen(params->datafile, "r");
	if (fp_uboot == NULL) {
	printf("Error: %s open failed\n", params->datafile);
	exit(EXIT_FAILURE);
	}

	load_uboot(fp_uboot);
	add_end_cmd();
	fclose(fp_uboot);
	lseek(ifd, 0, SEEK_SET);

	size = pbl_size;
	if (write(ifd, (const void *)&mem_buf, size) != size) {
	fprintf(stderr, "Write error on %s: %s\n",
	params->imagefile, strerror(errno));
	exit(EXIT_FAILURE);
	}
	}

	static int pblimage_check_image_types(uint8_t type)
	{
	if (type == IH_TYPE_PBLIMAGE)
	return EXIT_SUCCESS;
	else
	return EXIT_FAILURE;
	}

	static int pblimage_verify_header(unsigned char *ptr, int image_size,
	struct mkimage_params *params)
	{
	struct pbl_header pbl_hdr = (struct pbl_header ) ptr;

	/* Only a few checks can be done: search for magic numbers */
	if (ENDIANNESS == 'l') {
	if (pbl_hdr->preamble != reverse_byte(RCW_PREAMBLE))
	return -FDT_ERR_BADSTRUCTURE;

	if (pbl_hdr->rcwheader != reverse_byte(RCW_HEADER))
	return -FDT_ERR_BADSTRUCTURE;
	} else {
	if (pbl_hdr->preamble != RCW_PREAMBLE)
	return -FDT_ERR_BADSTRUCTURE;

	if (pbl_hdr->rcwheader != RCW_HEADER)
	return -FDT_ERR_BADSTRUCTURE;
	}
	return 0;
	}

	static void pblimage_print_header(const void *ptr)
	{
	printf("Image Type: Freescale PBL Boot Image\n");
	}

	static void pblimage_set_header(void ptr, struct stat sbuf, int ifd,
	struct mkimage_params *params)
	{
	/nothing need to do, pbl_load_uboot takes care of whole file. /
	}

	/* pblimage parameters */
	static struct image_type_params pblimage_params = {
	.name = "Freescale PBL Boot Image support",
	.header_size = sizeof(struct pbl_header),
	.hdr = (void *)&pblimage_header,
	.check_image_type = pblimage_check_image_types,
	.verify_header = pblimage_verify_header,
	.print_header = pblimage_print_header,
	.set_header = pblimage_set_header,
	};

	void init_pbl_image_type(void)
	{
	pbl_size = 0;
	mkimage_register(&pblimage_params);
	}