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author | Gabor Juhos <juhosg@openwrt.org> | 2010-09-03 18:14:40 +0000 |
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committer | Gabor Juhos <juhosg@openwrt.org> | 2010-09-03 18:14:40 +0000 |
commit | 7bf815999150ea2d56e25ac9bcdc01795a40d123 (patch) | |
tree | c1a09e05c6025d34c88a7017bc9a30fc9b9d96f0 /tools/firmware-utils/src | |
parent | b4336a8e2db89f6f1b9d9eee885e63c34e636df1 (diff) | |
download | master-31e0f0ae-7bf815999150ea2d56e25ac9bcdc01795a40d123.tar.gz master-31e0f0ae-7bf815999150ea2d56e25ac9bcdc01795a40d123.tar.bz2 master-31e0f0ae-7bf815999150ea2d56e25ac9bcdc01795a40d123.zip |
tools/firmware-utils: new tool for the Zcomax devices
SVN-Revision: 22883
Diffstat (limited to 'tools/firmware-utils/src')
-rw-r--r-- | tools/firmware-utils/src/mkzcfw.c | 408 |
1 files changed, 408 insertions, 0 deletions
diff --git a/tools/firmware-utils/src/mkzcfw.c b/tools/firmware-utils/src/mkzcfw.c new file mode 100644 index 0000000000..d438f03739 --- /dev/null +++ b/tools/firmware-utils/src/mkzcfw.c @@ -0,0 +1,408 @@ +/* + * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ + +#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 "\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; + struct board_info *board; + + 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; + int writelen = 0; + uint32_t crc; + 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; + int err; + + FILE *outfile; + + progname = basename(argv[0]); + + 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; +} + |