diff options
author | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-08-17 17:56:02 +0000 |
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committer | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-08-17 17:56:02 +0000 |
commit | dc20bb23a2d0e932a095b179cb82067cb27ed164 (patch) | |
tree | 550595ac994818c063de337928be4c16c67280a2 /tools/firmware-utils/src | |
parent | 79c262e038db1cefa7b11d302e3daa25026054b0 (diff) |
tools/firmware-utils: add tool for DIR-651-H1 firmware generation
Signed-off-by: Mikko Hissa <mikko.hissa@uta.fi>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33204 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'tools/firmware-utils/src')
-rw-r--r-- | tools/firmware-utils/src/mkdir615h1.c | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/tools/firmware-utils/src/mkdir615h1.c b/tools/firmware-utils/src/mkdir615h1.c new file mode 100644 index 000000000..84692aa3a --- /dev/null +++ b/tools/firmware-utils/src/mkdir615h1.c @@ -0,0 +1,410 @@ +/* + * + * Copyright (C) 2012 OpenWrt.org + * Copyright (C) 2012 Mikko Hissa <mikko.hissa@uta.fi> + * + * 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 <string.h> +#include <stdarg.h> +#include <libgen.h> +#include <errno.h> +#include <arpa/inet.h> +#include <unistd.h> +#include "md5.h" + +#define HDR_LEN 0x60 +#define BUF_SIZE 0x200 +#define VERSION_SIZE 0x10 +#define MD5_SIZE 0x10 +#define PAD_SIZE 0x20 +#define DEFAULT_MAGIC 305419896 +#define DEFAULT_VERSION "123" +#define DEFAULT_VENDOR_ID 536 +#define DEFAULT_HEAD_VALUE 0x0 +#define DEFAULT_BLOCK_SIZE 65535 +#define DEFAULT_PRODUCT_ID 48 +#define DEFAULT_FIRMWARE_TYPE 0x03 + +typedef struct { + uint32_t head; + uint32_t vendor_id; + uint32_t product_id; + uint8_t version[VERSION_SIZE]; + uint32_t firmware_type; + uint32_t filesize; + uint32_t zero; + uint8_t md5sum[MD5_SIZE]; + uint8_t pad[PAD_SIZE]; + uint32_t chksum; + uint32_t magic; +} img_header; + +typedef struct { + uint8_t id; + char * name; +} firmware_type; + +typedef enum { + NONE, ENCODE, DECODE +} op_mode; + +static firmware_type FIRMWARE_TYPES[] = { + { 0x01, "bootloader" }, + { 0x02, "kernel" }, + { 0x03, "kernelapp" }, + { 0x04, "apps" }, + { 0x05, "littleapps" }, + { 0x06, "sounds" }, + { 0x07, "userconfig" }, + { 0x0a, "factoryapps" }, + { 0x0b, "odmapps" }, + { 0x0c, "langpack" } +}; + +static long get_file_size(const char *filename) +{ + FILE *fp_file; + long result; + + fp_file = fopen(filename, "r"); + if (!fp_file) + return -1; + fseek(fp_file, 0, SEEK_END); + result = ftell(fp_file); + fclose(fp_file); + return result; +} + +static int header_checksum(void *data, int len) +{ + int i; + int sum; + + sum = 0; + if (data != NULL && len >= 0) { + for (i = 0; i < len; ++i) + sum += *(unsigned char *) (data + i); + return sum; + } + + return -1; +} + +static int md5_file(const char *filename, uint8_t *dst) +{ + FILE *fp_src; + MD5_CTX ctx; + char buf[BUF_SIZE]; + size_t bytes_read; + + MD5_Init(&ctx); + + fp_src = fopen(filename, "r+b"); + if (!fp_src) { + return -1; + } + while (!feof(fp_src)) { + bytes_read = fread(&buf, 1, BUF_SIZE, fp_src); + MD5_Update(&ctx, &buf, bytes_read); + } + fclose(fp_src); + + MD5_Final(dst, &ctx); + + return 0; +} + +static int encode_image(const char *input_file_name, + const char *output_file_name, img_header *header, int block_size) +{ + char buf[BUF_SIZE]; + size_t bytes_read; + size_t pad_len = 0; + size_t bytes_avail; + + FILE *fp_input; + FILE *fp_output; + + int i; + long magic; + + fp_input = fopen(input_file_name, "r+b"); + if (!fp_input) { + fprintf(stderr, "Cannot open %s !!\n", input_file_name); + return -1; + } + + fp_output = fopen(output_file_name, "w+b"); + if (!fp_output) { + fprintf(stderr, "Cannot open %s !!\n", output_file_name); + fclose(fp_input); + return -1; + } + + header->filesize = get_file_size(input_file_name); + if (!header->filesize) { + fprintf(stderr, "File %s open/size error!\n", input_file_name); + fclose(fp_input); + fclose(fp_output); + return -1; + } + /* + * Zero padding + */ + if (block_size > 0) { + pad_len = block_size - (header->filesize % block_size); + } + + if (md5_file(input_file_name, (uint8_t *) &header->md5sum) < 0) { + fprintf(stderr, "Md5 failed on file %s\n", input_file_name); + fclose(fp_input); + fclose(fp_output); + return -1; + } + header->zero = 0; + header->chksum = header_checksum(header, HDR_LEN); + header->head = htonl(header->head); + header->vendor_id = htonl(header->vendor_id); + header->product_id = htonl(header->product_id); + header->firmware_type = htonl(header->firmware_type); + header->filesize = htonl(header->filesize); + header->chksum = htonl(header->chksum); + magic = header->magic; + header->magic = htonl(header->magic); + + fwrite(header, HDR_LEN, 1, fp_output); + + while (!feof(fp_input) || pad_len > 0) { + + if (!feof(fp_input)) + bytes_read = fread(&buf, 1, BUF_SIZE, fp_input); + else + bytes_read = 0; + + /* + * No more bytes read, start padding + */ + if (bytes_read < BUF_SIZE && pad_len > 0) { + bytes_avail = BUF_SIZE - bytes_read; + memset( &buf[bytes_read], 0, bytes_avail); + bytes_read += bytes_avail < pad_len ? bytes_avail : pad_len; + pad_len -= bytes_avail < pad_len ? bytes_avail : pad_len; + } + + for (i = 0; i < bytes_read; i++) + buf[i] ^= magic >> ((((i >> 60) + i) & 7) - (i >> 60)); + fwrite(&buf, bytes_read, 1, fp_output); + } + + fclose(fp_input); + fclose(fp_output); + return 1; +} + +int decode_image(const char *input_file_name, const char *output_file_name) +{ + img_header header; + char buf[512]; + + FILE *fp_input; + FILE *fp_output; + unsigned int i; + + size_t bytes_read; + size_t bytes_written; + + fp_input = fopen(input_file_name, "r+b"); + if (!fp_input) { + fprintf(stderr, "Cannot open %s !!\n", input_file_name); + fclose(fp_input); + return -1; + } + + fp_output = fopen(output_file_name, "w+b"); + if (!fp_output) { + fprintf(stderr, "Cannot open %s !!\n", output_file_name); + fclose(fp_output); + return -1; + } + + if (fread(&header, 1, HDR_LEN, fp_input) != HDR_LEN) { + fprintf(stderr, "Incorrect header size!!"); + fclose(fp_input); + fclose(fp_output); + return -1; + } + + header.head = ntohl(header.head); + header.vendor_id = ntohl(header.vendor_id); + header.product_id = ntohl(header.product_id); + header.firmware_type = ntohl(header.firmware_type); + header.filesize = ntohl(header.filesize); + header.chksum = ntohl(header.chksum); + header.magic = ntohl(header.magic); + + bytes_written = 0; + while (!feof(fp_input)) { + + bytes_read = fread(&buf, 1, BUF_SIZE, fp_input); + for (i = 0; i < bytes_read; i++) + buf[i] ^= header.magic >> ((((i >> 60) + i) & 7) - (i >> 60)); + + /* + * Handle padded source file + */ + if (bytes_written + bytes_read > header.filesize) { + bytes_read = header.filesize - bytes_written; + if (bytes_read > 0) + fwrite(&buf, bytes_read, 1, fp_output); + break; + } + + fwrite(&buf, bytes_read, 1, fp_output); + bytes_written += bytes_read; + } + + fclose(fp_input); + fclose(fp_output); + + return 1; +} + +static void usage(const char *progname, int status) +{ + FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout; + int i; + + fprintf(stream, "Usage: %s [OPTIONS...]\n", progname); + fprintf(stream, "\n" + "Options:\n" + " -e <file> encode image file <file>\n" + " -d <file> decode image file <file>\n" + " -o <file> write output to the file <file>\n" + " -t <type> set image type to <type>, defaults to 3\n" + " valid image <type> values:\n"); + for (i = 0; i < sizeof(FIRMWARE_TYPES) / sizeof(firmware_type); i++) { + fprintf(stream, " %-5i= %s\n", FIRMWARE_TYPES[i].id, + FIRMWARE_TYPES[i].name); + } + fprintf(stream, " -v <version> set image version to <version>\n" + " -r <vendor> set image vendor id to <vendor>\n" + " -p <product> set image product id to <product>\n" + " -m <magic> set encoding magic <magic>\n" + " -z enable image padding to <blocksize>\n" + " -b <blocksize> set image <blocksize>, defaults to 65535\n" + " -h show this screen\n"); + exit(status); +} + +int main(int argc, char *argv[]) +{ + int opt; + char *input_file, *output_file, *progname = NULL; + op_mode mode = NONE; + int tmp, i, pad = 0; + int block_size; + img_header header; + + block_size = DEFAULT_BLOCK_SIZE; + progname = basename(argv[0]); + + memset(&header, 0, sizeof( img_header )); + header.magic = DEFAULT_MAGIC; + header.head = DEFAULT_HEAD_VALUE; + header.vendor_id = DEFAULT_VENDOR_ID; + header.product_id = DEFAULT_PRODUCT_ID; + header.firmware_type = DEFAULT_FIRMWARE_TYPE; + strncpy( (char*)&header.version, DEFAULT_VERSION, VERSION_SIZE - 1); + + while ((opt = getopt(argc, argv, ":o:e:d:t:v:r:p:m:b:h?z")) != -1) { + switch (opt) { + case 'e': + input_file = optarg; + mode = ENCODE; + break; + case 'd': + input_file = optarg; + mode = DECODE; + break; + case 'o': + output_file = optarg; + break; + case 't': + tmp = strtol(optarg, 0, 10); + for (i = 0; i < sizeof(FIRMWARE_TYPES) / sizeof(firmware_type); + i++) { + if (FIRMWARE_TYPES[i].id == tmp) { + header.firmware_type = FIRMWARE_TYPES[i].id; + break; + } + } + if (header.firmware_type == 0) { + fprintf(stderr, "Invalid firmware <type>!\n"); + usage(progname, EXIT_FAILURE); + } + break; + case 'v': + strncpy( (char*)&header.version, optarg, + VERSION_SIZE - 1); + break; + case 'r': + header.vendor_id = strtol(optarg, 0, 10); + break; + case 'p': + header.product_id = strtol(optarg, 0, 10); + break; + case 'm': + header.magic = strtoul(optarg, 0, 16); + break; + case 'z': + pad = 1; + break; + case 'b': + block_size = strtol(optarg, 0, 10); + break; + case 'h': + usage(progname, EXIT_SUCCESS); + break; + case ':': + fprintf(stderr, "Option -%c requires an operand\n", optopt); + usage(progname, EXIT_FAILURE); + break; + case '?': + fprintf(stderr, "Unrecognized option: -%c\n", optopt); + usage(progname, EXIT_FAILURE); + break; + default: + usage(progname, EXIT_FAILURE); + break; + } + } + + if (input_file == NULL || output_file == NULL ) { + fprintf(stderr, "Input and output files must be defined\n"); + usage(progname, EXIT_FAILURE); + } + + switch (mode) { + case NONE: + usage(progname, EXIT_FAILURE); + break; + case ENCODE: + if (encode_image(input_file, output_file, &header, pad ? block_size : 0) + < 0) + return EXIT_FAILURE; + break; + case DECODE: + if (decode_image(input_file, output_file) < 0) + return EXIT_FAILURE; + break; + } + + return EXIT_SUCCESS; +} |