+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-#include <unistd.h> /* for unlink() */
-#include <libgen.h>
-#include <getopt.h> /* for getopt() */
-#include <stdarg.h>
-#include <errno.h>
-#include <sys/stat.h>
-
-#include "cyg_crc.h"
-
-#if (__BYTE_ORDER == __BIG_ENDIAN)
-# define HOST_TO_BE32(x) (x)
-# define BE32_TO_HOST(x) (x)
-# define HOST_TO_LE32(x) bswap_32(x)
-# define LE32_TO_HOST(x) bswap_32(x)
-#else
-# define HOST_TO_BE32(x) bswap_32(x)
-# define BE32_TO_HOST(x) bswap_32(x)
-# define HOST_TO_LE32(x) (x)
-# define LE32_TO_HOST(x) (x)
-#endif
-
-#define MAGIC_FIRMWARE 0x6d726966 /* 'firm' */
-#define MAGIC_KERNEL 0x676d694b /* 'Kimg' */
-#define MAGIC_ROOTFS 0x676d6952 /* 'Rimg' */
-
-struct file_info {
- char *file_name; /* name of the file */
- uint32_t file_size; /* length of the file */
-};
-
-struct fw_header {
- uint32_t magic;
- uint32_t length;
- uint32_t unk1;
- uint32_t unk2;
-} __attribute__ ((packed));
-
-struct fw_tail {
- uint32_t hw_id;
- uint32_t crc;
-} __attribute__ ((packed));
-
-struct board_info {
- char *id;
- uint32_t hw_id;
- uint32_t kernel_len;
- uint32_t rootfs_len;
-};
-
-/*
- * Globals
- */
-static char *ofname;
-static char *progname;
-
-static char *board_id;
-static struct board_info *board;
-static struct file_info kernel_info;
-static struct file_info rootfs_info;
-
-
-static struct board_info boards[] = {
- {
- .id = "ZCN-1523H-2-8",
- .hw_id = 0x66661523,
- .kernel_len = 0x170000,
- .rootfs_len = 0x610000,
- }, {
- .id = "ZCN-1523H-5-16",
- .hw_id = 0x6615235A,
- .kernel_len = 0x170000,
- .rootfs_len = 0x610000,
- }, {
- /* terminating entry */
- }
-};
-
-/*
- * Message macros
- */
-#define ERR(fmt, ...) do { \
- fflush(0); \
- fprintf(stderr, "[%s] *** error: " fmt "\n", \
- progname, ## __VA_ARGS__ ); \
-} while (0)
-
-#define ERRS(fmt, ...) do { \
- int save = errno; \
- fflush(0); \
- fprintf(stderr, "[%s] *** error: " fmt ": %s\n", \
- progname, ## __VA_ARGS__, strerror(save)); \
-} while (0)
-
-#define DBG(fmt, ...) do { \
- fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
-} while (0)
-
-static struct board_info *find_board(char *id)
-{
- struct board_info *ret;
- struct board_info *board;
-
- ret = NULL;
- for (board = boards; board->id != NULL; board++){
- if (strcasecmp(id, board->id) == 0) {
- ret = board;
- break;
- }
- };
-
- return ret;
-}
-
-static void usage(int status)
-{
- FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
-
- fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
- fprintf(stream,
-"\n"
-"Options:\n"
-" -B <board> create image for the board specified with <board>\n"
-" -k <file> read kernel image from the file <file>\n"
-" -r <file> read rootfs image from the file <file>\n"
-" -o <file> write output to the file <file>\n"
-" -h show this screen\n"
- );
-
- exit(status);
-}
-
-static int get_file_stat(struct file_info *fdata)
-{
- struct stat st;
- int res;
-
- if (fdata->file_name == NULL)
- return 0;
-
- res = stat(fdata->file_name, &st);
- if (res){
- ERRS("stat failed on %s", fdata->file_name);
- return res;
- }
-
- fdata->file_size = st.st_size;
- return 0;
-}
-
-static int read_to_buf(struct file_info *fdata, char *buf)
-{
- FILE *f;
- int ret = EXIT_FAILURE;
-
- f = fopen(fdata->file_name, "r");
- if (f == NULL) {
- ERRS("could not open \"%s\" for reading", fdata->file_name);
- goto out;
- }
-
- errno = 0;
- fread(buf, fdata->file_size, 1, f);
- if (errno != 0) {
- ERRS("unable to read from file \"%s\"", fdata->file_name);
- goto out_close;
- }
-
- ret = EXIT_SUCCESS;
-
- out_close:
- fclose(f);
- out:
- return ret;
-}
-
-static int check_options(void)
-{
- int ret;
-
- if (board_id == NULL) {
- ERR("no board specified");
- return -1;
- }
-
- board = find_board(board_id);
- if (board == NULL) {
- ERR("unknown/unsupported board id \"%s\"", board_id);
- return -1;
- }
-
- if (kernel_info.file_name == NULL) {
- ERR("no kernel image specified");
- return -1;
- }
-
- ret = get_file_stat(&kernel_info);
- if (ret)
- return ret;
-
- if (kernel_info.file_size > board->kernel_len) {
- ERR("kernel image is too big");
- return -1;
- }
-
- if (rootfs_info.file_name == NULL) {
- ERR("no rootfs image specified");
- return -1;
- }
-
- ret = get_file_stat(&rootfs_info);
- if (ret)
- return ret;
-
- if (rootfs_info.file_size > board->rootfs_len) {
- ERR("rootfs image is too big");
- return -1;
- }
-
- if (ofname == NULL) {
- ERR("no output file specified");
- return -1;
- }
-
- return 0;
-}
-
-static int write_fw(char *data, int len)
-{
- FILE *f;
- int ret = EXIT_FAILURE;
-
- f = fopen(ofname, "w");
- if (f == NULL) {
- ERRS("could not open \"%s\" for writing", ofname);
- goto out;
- }
-
- errno = 0;
- fwrite(data, len, 1, f);
- if (errno) {
- ERRS("unable to write output file");
- goto out_flush;
- }
-
- DBG("firmware file \"%s\" completed", ofname);
-
- ret = EXIT_SUCCESS;
-
- out_flush:
- fflush(f);
- fclose(f);
- if (ret != EXIT_SUCCESS) {
- unlink(ofname);
- }
- out:
- return ret;
-}
-
-static int build_fw(void)
-{
- int buflen;
- char *buf;
- char *p;
- int ret = EXIT_FAILURE;
- struct fw_header *hdr;
- struct fw_tail *tail;
-
- buflen = 3 * sizeof(struct fw_header) +
- kernel_info.file_size + rootfs_info.file_size +
- 3 * sizeof(struct fw_tail);
-
- buf = malloc(buflen);
- if (!buf) {
- ERR("no memory for buffer\n");
- goto out;
- }
-
- p = buf;
- memset(p, 0, buflen);
-
- /* fill firmware header */
- hdr = (struct fw_header *) p;
- hdr->magic = HOST_TO_LE32(MAGIC_FIRMWARE);
- hdr->length = HOST_TO_LE32(buflen - sizeof(struct fw_header));
- p += sizeof(struct fw_header);
-
- /* fill kernel block header */
- hdr = (struct fw_header *) p;
- hdr->magic = HOST_TO_LE32(MAGIC_KERNEL);
- hdr->length = HOST_TO_LE32(kernel_info.file_size +
- sizeof(struct fw_tail));
- p += sizeof(struct fw_header);
-
- /* read kernel data */
- ret = read_to_buf(&kernel_info, p);
- if (ret)
- goto out_free_buf;
-
- /* fill firmware tail */
- tail = (struct fw_tail *) (p + kernel_info.file_size);
- tail->hw_id = HOST_TO_BE32(board->hw_id);
- tail->crc = HOST_TO_BE32(cyg_crc32(p, kernel_info.file_size +
- sizeof(struct fw_tail) - 4));
-
- p += kernel_info.file_size + sizeof(struct fw_tail);
-
- /* fill rootfs block header */
- hdr = (struct fw_header *) p;
- hdr->magic = HOST_TO_LE32(MAGIC_ROOTFS);
- hdr->length = HOST_TO_LE32(rootfs_info.file_size +
- sizeof(struct fw_tail));
- p += sizeof(struct fw_header);
-
- /* read rootfs data */
- ret = read_to_buf(&rootfs_info, p);
- if (ret)
- goto out_free_buf;
-
- /* fill firmware tail */
- tail = (struct fw_tail *) (p + rootfs_info.file_size);
- tail->hw_id = HOST_TO_BE32(board->hw_id);
- tail->crc = HOST_TO_BE32(cyg_crc32(p, rootfs_info.file_size +
- sizeof(struct fw_tail) - 4));
-
- p += rootfs_info.file_size + sizeof(struct fw_tail);
-
- /* fill firmware tail */
- tail = (struct fw_tail *) p;
- tail->hw_id = HOST_TO_BE32(board->hw_id);
- tail->crc = HOST_TO_BE32(cyg_crc32(buf + sizeof(struct fw_header),
- buflen - sizeof(struct fw_header) - 4));
-
- ret = write_fw(buf, buflen);
- if (ret)
- goto out_free_buf;
-
- ret = EXIT_SUCCESS;
-
- out_free_buf:
- free(buf);
- out:
- return ret;
-}
-
-int main(int argc, char *argv[])
-{
- int ret = EXIT_FAILURE;
-
- while ( 1 ) {
- int c;
-
- c = getopt(argc, argv, "B:k:r:o:h");
- if (c == -1)
- break;
-
- switch (c) {
- case 'B':
- board_id = optarg;
- break;
- case 'k':
- kernel_info.file_name = optarg;
- break;
- case 'r':
- rootfs_info.file_name = optarg;
- break;
- case 'o':
- ofname = optarg;
- break;
- case 'h':
- usage(EXIT_SUCCESS);
- break;
- default:
- usage(EXIT_FAILURE);
- break;
- }
- }
-
- ret = check_options();
- if (ret)
- goto out;
-
- ret = build_fw();
-
- out:
- return ret;
-}
-
projects / openwrt / openwrt.git / blobdiff