tools/firmware-utils: new tool for the Zcomax devices
SVN-Revision: 22883
This commit is contained in:
Gabor Juhos
parent
b4336a8e2d
commit
7bf8159991
2 changed files with 409 additions and 0 deletions
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@ -47,6 +47,7 @@ define Host/Compile
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$(call cc,mkdniimg)
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$(call cc,mktitanimg)
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$(call cc,mkchkimg)
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$(call cc,mkzcfw cyg_crc32)
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endef
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define Host/Install
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408
tools/firmware-utils/src/mkzcfw.c
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408
tools/firmware-utils/src/mkzcfw.c
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@ -0,0 +1,408 @@
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/*
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* Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <unistd.h> /* for unlink() */
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#include <libgen.h>
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#include <getopt.h> /* for getopt() */
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#include <stdarg.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include "cyg_crc.h"
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#if (__BYTE_ORDER == __BIG_ENDIAN)
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# define HOST_TO_BE32(x) (x)
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# define BE32_TO_HOST(x) (x)
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# define HOST_TO_LE32(x) bswap_32(x)
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# define LE32_TO_HOST(x) bswap_32(x)
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#else
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# define HOST_TO_BE32(x) bswap_32(x)
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# define BE32_TO_HOST(x) bswap_32(x)
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# define HOST_TO_LE32(x) (x)
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# define LE32_TO_HOST(x) (x)
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#endif
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#define MAGIC_FIRMWARE 0x6d726966 /* 'firm' */
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#define MAGIC_KERNEL 0x676d694b /* 'Kimg' */
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#define MAGIC_ROOTFS 0x676d6952 /* 'Rimg' */
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struct file_info {
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char *file_name; /* name of the file */
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uint32_t file_size; /* length of the file */
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};
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struct fw_header {
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uint32_t magic;
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uint32_t length;
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uint32_t unk1;
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uint32_t unk2;
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} __attribute__ ((packed));
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struct fw_tail {
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uint32_t hw_id;
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uint32_t crc;
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} __attribute__ ((packed));
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struct board_info {
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char *id;
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uint32_t hw_id;
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uint32_t kernel_len;
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uint32_t rootfs_len;
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};
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/*
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* Globals
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*/
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static char *ofname;
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static char *progname;
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static char *board_id;
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static struct board_info *board;
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static struct file_info kernel_info;
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static struct file_info rootfs_info;
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static struct board_info boards[] = {
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{
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.id = "ZCN-1523H-2-8",
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.hw_id = 0x66661523,
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.kernel_len = 0x170000,
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.rootfs_len = 0x610000,
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}, {
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.id = "ZCN-1523H-5-16",
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.hw_id = 0x6615235A,
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.kernel_len = 0x170000,
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.rootfs_len = 0x610000,
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}, {
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/* terminating entry */
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}
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};
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/*
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* Message macros
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*/
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#define ERR(fmt, ...) do { \
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fflush(0); \
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fprintf(stderr, "[%s] *** error: " fmt "\n", \
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progname, ## __VA_ARGS__ ); \
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} while (0)
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#define ERRS(fmt, ...) do { \
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int save = errno; \
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fflush(0); \
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fprintf(stderr, "[%s] *** error: " fmt "\n", \
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progname, ## __VA_ARGS__, strerror(save)); \
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} while (0)
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#define DBG(fmt, ...) do { \
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fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
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} while (0)
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static struct board_info *find_board(char *id)
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{
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struct board_info *ret;
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struct board_info *board;
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ret = NULL;
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for (board = boards; board->id != NULL; board++){
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if (strcasecmp(id, board->id) == 0) {
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ret = board;
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break;
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}
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};
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return ret;
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}
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static void usage(int status)
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{
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FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
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struct board_info *board;
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fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
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fprintf(stream,
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"\n"
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"Options:\n"
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" -B <board> create image for the board specified with <board>\n"
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" -k <file> read kernel image from the file <file>\n"
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" -r <file> read rootfs image from the file <file>\n"
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" -o <file> write output to the file <file>\n"
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" -h show this screen\n"
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);
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exit(status);
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}
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static int get_file_stat(struct file_info *fdata)
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{
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struct stat st;
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int res;
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if (fdata->file_name == NULL)
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return 0;
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res = stat(fdata->file_name, &st);
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if (res){
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ERRS("stat failed on %s", fdata->file_name);
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return res;
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}
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fdata->file_size = st.st_size;
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return 0;
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}
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static int read_to_buf(struct file_info *fdata, char *buf)
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{
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FILE *f;
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int ret = EXIT_FAILURE;
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f = fopen(fdata->file_name, "r");
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if (f == NULL) {
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ERRS("could not open \"%s\" for reading", fdata->file_name);
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goto out;
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}
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errno = 0;
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fread(buf, fdata->file_size, 1, f);
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if (errno != 0) {
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ERRS("unable to read from file \"%s\"", fdata->file_name);
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goto out_close;
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}
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ret = EXIT_SUCCESS;
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out_close:
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fclose(f);
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out:
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return ret;
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}
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static int check_options(void)
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{
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int ret;
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if (board_id == NULL) {
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ERR("no board specified");
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return -1;
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}
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board = find_board(board_id);
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if (board == NULL) {
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ERR("unknown/unsupported board id \"%s\"", board_id);
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return -1;
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}
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if (kernel_info.file_name == NULL) {
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ERR("no kernel image specified");
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return -1;
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}
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ret = get_file_stat(&kernel_info);
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if (ret)
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return ret;
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if (kernel_info.file_size > board->kernel_len) {
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ERR("kernel image is too big");
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return -1;
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}
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if (rootfs_info.file_name == NULL) {
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ERR("no rootfs image specified");
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return -1;
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}
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ret = get_file_stat(&rootfs_info);
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if (ret)
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return ret;
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if (rootfs_info.file_size > board->rootfs_len) {
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ERR("rootfs image is too big");
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return -1;
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}
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if (ofname == NULL) {
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ERR("no output file specified");
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return -1;
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}
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return 0;
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}
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static int write_fw(char *data, int len)
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{
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FILE *f;
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int ret = EXIT_FAILURE;
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f = fopen(ofname, "w");
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if (f == NULL) {
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ERRS("could not open \"%s\" for writing", ofname);
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goto out;
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}
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errno = 0;
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fwrite(data, len, 1, f);
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if (errno) {
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ERRS("unable to write output file");
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goto out_flush;
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}
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DBG("firmware file \"%s\" completed", ofname);
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ret = EXIT_SUCCESS;
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out_flush:
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fflush(f);
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fclose(f);
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if (ret != EXIT_SUCCESS) {
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unlink(ofname);
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}
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out:
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return ret;
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}
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static int build_fw(void)
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{
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int buflen;
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char *buf;
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char *p;
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int ret = EXIT_FAILURE;
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int writelen = 0;
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uint32_t crc;
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struct fw_header *hdr;
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struct fw_tail *tail;
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buflen = 3 * sizeof(struct fw_header) +
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kernel_info.file_size + rootfs_info.file_size +
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3 * sizeof(struct fw_tail);
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buf = malloc(buflen);
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if (!buf) {
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ERR("no memory for buffer\n");
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goto out;
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}
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p = buf;
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memset(p, 0, buflen);
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/* fill firmware header */
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hdr = (struct fw_header *) p;
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hdr->magic = HOST_TO_LE32(MAGIC_FIRMWARE);
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hdr->length = HOST_TO_LE32(buflen) - sizeof(struct fw_header);
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p += sizeof(struct fw_header);
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/* fill kernel block header */
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hdr = (struct fw_header *) p;
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hdr->magic = HOST_TO_LE32(MAGIC_KERNEL);
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hdr->length = HOST_TO_LE32(kernel_info.file_size +
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sizeof(struct fw_tail));
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p += sizeof(struct fw_header);
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/* read kernel data */
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ret = read_to_buf(&kernel_info, p);
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if (ret)
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goto out_free_buf;
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/* fill firmware tail */
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tail = (struct fw_tail *) (p + kernel_info.file_size);
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tail->hw_id = HOST_TO_BE32(board->hw_id);
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tail->crc = HOST_TO_BE32(cyg_crc32(p, kernel_info.file_size +
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sizeof(struct fw_tail) - 4));
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p += kernel_info.file_size + sizeof(struct fw_tail);
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/* fill rootfs block header */
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hdr = (struct fw_header *) p;
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hdr->magic = HOST_TO_LE32(MAGIC_ROOTFS);
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hdr->length = HOST_TO_LE32(rootfs_info.file_size +
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sizeof(struct fw_tail));
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p += sizeof(struct fw_header);
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/* read rootfs data */
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ret = read_to_buf(&rootfs_info, p);
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if (ret)
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goto out_free_buf;
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/* fill firmware tail */
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tail = (struct fw_tail *) (p + rootfs_info.file_size);
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tail->hw_id = HOST_TO_BE32(board->hw_id);
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tail->crc = HOST_TO_BE32(cyg_crc32(p, rootfs_info.file_size +
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sizeof(struct fw_tail) - 4));
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p += rootfs_info.file_size + sizeof(struct fw_tail);
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/* fill firmware tail */
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tail = (struct fw_tail *) p;
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tail->hw_id = HOST_TO_BE32(board->hw_id);
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tail->crc = HOST_TO_BE32(cyg_crc32(buf + sizeof(struct fw_header),
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buflen - sizeof(struct fw_header) - 4));
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ret = write_fw(buf, buflen);
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if (ret)
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goto out_free_buf;
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ret = EXIT_SUCCESS;
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out_free_buf:
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free(buf);
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out:
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return ret;
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}
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int main(int argc, char *argv[])
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{
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int ret = EXIT_FAILURE;
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int err;
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FILE *outfile;
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progname = basename(argv[0]);
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while ( 1 ) {
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int c;
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c = getopt(argc, argv, "B:k:r:o:h");
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if (c == -1)
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break;
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switch (c) {
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case 'B':
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board_id = optarg;
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break;
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case 'k':
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kernel_info.file_name = optarg;
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break;
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case 'r':
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rootfs_info.file_name = optarg;
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break;
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case 'o':
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ofname = optarg;
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break;
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case 'h':
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usage(EXIT_SUCCESS);
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break;
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default:
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usage(EXIT_FAILURE);
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break;
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}
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}
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ret = check_options();
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if (ret)
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goto out;
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ret = build_fw();
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out:
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return ret;
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}
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