+++ /dev/null
-/*
- * firmware cutter for broadcom 43xx wireless driver files
- *
- * Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
- * 2005 Michael Buesch <mbuesch@freenet.de>
- * 2005 Alex Beregszaszi
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-
-
-#include <stdlib.h>
-#include <ctype.h>
-#include <string.h>
-#include <stdio.h>
-
-typedef unsigned char byte;
-
-#define DRIVER_UNSUPPORTED 0x01 /* no support for this driver file */
-#define BYTE_ORDER_BIG_ENDIAN 0x02 /* ppc driver files */
-#define BYTE_ORDER_LITTLE_ENDIAN 0x04 /* x86, mips driver files */
-
-#define MISSING_INITVAL_08 0x10 /* initval 8 is missing */
-#define MISSING_INITVAL_80211_A 0x20 /* initvals 3,7,9,10 (802.11a cards) are empty */
-
-#define FIRMWARE_UCODE_OFFSET 100
-#define FIRMWARE_UNDEFINED 0
-#define FIRMWARE_PCM_4 4
-#define FIRMWARE_PCM_5 5
-#define FIRMWARE_UCODE_2 (FIRMWARE_UCODE_OFFSET + 2)
-#define FIRMWARE_UCODE_4 (FIRMWARE_UCODE_OFFSET + 4)
-#define FIRMWARE_UCODE_5 (FIRMWARE_UCODE_OFFSET + 5)
-#define FIRMWARE_UCODE_11 (FIRMWARE_UCODE_OFFSET + 11)
-
-
-#define fwcutter_stringify_1(x) #x
-#define fwcutter_stringify(x) fwcutter_stringify_1(x)
-#define FWCUTTER_VERSION fwcutter_stringify(FWCUTTER_VERSION_)
-
-#include "md5.h"
-#include "fwcutter_list.h"
-
-
-struct cmdline_args {
- const char *infile;
- const char *postfix;
- const char *target_dir;
- int identify_only;
-};
-
-static struct cmdline_args cmdargs;
-int big_endian_cpu;
-
-
-static void write_little_endian(FILE *f, byte *buffer, int len)
-{
- byte swapbuf[4];
-
- while (len > 0) {
- swapbuf[0] = buffer[3]; swapbuf[1] = buffer[2];
- swapbuf[2] = buffer[1]; swapbuf[3] = buffer[0];
- fwrite(swapbuf, 4, 1, f);
- buffer = buffer + 4;
- len = len - 4;
- }
-}
-
-static void write_big_endian(FILE *f, byte *buffer, int len)
-{
- while (len > 0) {
- fwrite(buffer, 4, 1, f);
- buffer = buffer + 4;
- len = len - 4;
- }
-}
-
-static void write_fw(const char *outfilename, uint8_t flags, byte *data, int len)
-{
- FILE* fw;
- char outfile[2048];
-
- snprintf(outfile, sizeof(outfile),
- "%s/%s", cmdargs.target_dir, outfilename);
-
- fw = fopen(outfile, "w");
- if (!fw) {
- perror(outfile);
- exit(1);
- }
-
- if (flags & BYTE_ORDER_LITTLE_ENDIAN)
- write_little_endian(fw, data, len);
- else if (flags & BYTE_ORDER_BIG_ENDIAN)
- write_big_endian(fw, data, len);
- else
- printf("unknown byteorder...\n");
-
- fflush(fw);
- fclose(fw);
-}
-
-static void write_iv(uint8_t flags, byte *data)
-{
- FILE* fw;
- char ivfilename[2048];
- int i;
-
- for (i = 1; i <= 10; i++) {
-
- if ((flags & MISSING_INITVAL_08) && (i==8)) {
- printf("*****: Sorry, initval08 is not available in driver file \"%s\".\n", cmdargs.infile);
- printf("*****: Extracting firmware from an old driver is bad. Choose a more recent one.\n");
- printf("*****: Luckily bcm43xx driver doesn't include initval08 uploads at the moment.\n");
- printf("*****: But this can be added in the future...\n");
- i++;
- }
-
- snprintf(ivfilename, sizeof(ivfilename),
- "%s/bcm43xx_initval%02d%s.fw",
- cmdargs.target_dir, i, cmdargs.postfix);
- fw = fopen(ivfilename, "w");
-
- if (!fw) {
- perror(ivfilename);
- exit(1);
- }
-
- printf("extracting bcm43xx_initval%02d%s.fw ...\n", i, cmdargs.postfix);
-
- while (1) {
-
- if ((data[0]==0xff) && (data[1]==0xff) && (data[2]==0x00) && (data[3]==0x00)) {
- data = data + 8;
- break;
- }
-
- if (flags & BYTE_ORDER_LITTLE_ENDIAN)
- fprintf(fw, "%c%c%c%c%c%c%c%c",
- data[1], data[0], /* offset */
- data[3], data[2], /* size */
- data[7], data[6], data[5], data[4]); /* value */
- else if (flags & BYTE_ORDER_BIG_ENDIAN)
- fprintf(fw, "%c%c%c%c%c%c%c%c",
- data[0], data[1], /* offset */
- data[2], data[3], /* size */
- data[4], data[5], data[6], data[7]); /* value */
- else {
- printf("unknown byteorder...\n");
- exit(1);
- }
-
- data = data + 8;
- }
- fflush(fw);
- fclose(fw);
- }
-}
-
-static byte* read_file(const char* filename)
-{
- FILE* file;
- long len;
- byte* data;
-
- file = fopen(filename, "rb");
- if (!file) {
- perror(filename);
- exit(1);
- }
- if (fseek(file, 0, SEEK_END)) {
- perror("cannot seek");
- exit(1);
- }
- len = ftell(file);
- fseek(file, 0, SEEK_SET);
- data = malloc(len);
- if (!data) {
- fputs("out of memory\n", stderr);
- exit(1);
- }
- if (fread(data, 1, len, file) != len) {
- perror("cannot read");
- exit(1);
- }
- fclose(file);
- return data;
-}
-
-static void extract_fw(uint8_t fwtype, uint8_t flags, uint32_t pos, uint32_t length)
-{
- byte* filedata;
- char outfile[1024];
-
- switch (fwtype) {
- case FIRMWARE_UCODE_2:
- case FIRMWARE_UCODE_4:
- case FIRMWARE_UCODE_5:
- case FIRMWARE_UCODE_11:
- snprintf(outfile, sizeof(outfile), "bcm43xx_microcode%i%s.fw",
- fwtype - FIRMWARE_UCODE_OFFSET, cmdargs.postfix);
- break;
- case FIRMWARE_PCM_4:
- case FIRMWARE_PCM_5:
- snprintf(outfile, sizeof(outfile), "bcm43xx_pcm%i%s.fw",
- fwtype, cmdargs.postfix);
- break;
- default:
- snprintf(outfile, sizeof(outfile), "bcm43xx_unknown.fw");
- }
-
- if (length > 0) {
- printf("extracting %s ...\n", outfile);
- filedata = read_file(cmdargs.infile);
- write_fw(outfile, flags, filedata + pos, length);
- free(filedata);
- } else {
- printf("*****: Sorry, it's not posible to extract \"%s\".\n", outfile);
- printf("*****: Extracting firmware from an old driver is bad. Choose a more recent one.\n");
-
- switch (fwtype) {
- case FIRMWARE_UCODE_2:
- printf("*****: bcm43xx driver will not work with with core revision 2.\n");
- break;
- case FIRMWARE_UCODE_4:
- printf("*****: bcm43xx driver will not work with with core revision 4.\n");
- break;
- case FIRMWARE_UCODE_5:
- printf("*****: bcm43xx driver will not work with with core revision 5 or higher.\n");
- break;
- case FIRMWARE_UCODE_11:
- printf("*****: Luckily bcm43xx driver doesn't include microcode11 uploads at the moment.\n");
- printf("*****: But this can be added in the future...\n");
- break;
- case FIRMWARE_PCM_4:
- printf("*****: bcm43xx driver will not work with with core revision 4 or smaller.\n");
- break;
- case FIRMWARE_PCM_5:
- printf("*****: bcm43xx driver will not work with with core revision 5 or higher.\n");
- break;
- }
- }
-}
-
-static void extract_iv(uint8_t flags, uint32_t pos)
-{
- byte* filedata;
-
- if (pos > 0) {
- filedata = read_file(cmdargs.infile);
- write_iv(flags, filedata + pos);
- free(filedata);
- }
-}
-
-static void print_banner(void)
-{
- printf("fwcutter " FWCUTTER_VERSION "\n");
-}
-
-static void print_file(const struct file *file)
-{
- printf("%s\t", file->name);
- if (strlen(file->name) < 8)
- printf("\t");
-
- printf("%s\t", file->version);
- if (strlen(file->version) < 8)
- printf("\t");
- if (strlen(file->version) < 16)
- printf("\t");
-
- if (!(file->flags & DRIVER_UNSUPPORTED)) {
- if (file->flags & MISSING_INITVAL_80211_A)
- printf("b/g ");
- else
- printf("a/b/g");
- }
-
- printf(" %s", file->md5);
- printf("\n");
-}
-
-static void print_supported_files(void)
-{
- int i;
-
- print_banner();
- printf("\nExtracting firmware is possible from these binary driver files:\n\n");
- printf("<filename>\t<version>\t <802.11><MD5 checksum>\n\n");
- for (i = 0; i < FILES; i++) {
- if (files[i].flags & DRIVER_UNSUPPORTED)
- continue;
- print_file(&files[i]);
- }
- printf("\n\nExtracting firmware is IMPOSSIBLE from these binary driver files:\n\n");
- printf("<filename>\t<version>\t <MD5 checksum>\n\n");
- for (i = 0; i < FILES; i++) {
- if (!(files[i].flags & DRIVER_UNSUPPORTED))
- continue;
- print_file(&files[i]);
- }
-}
-
-static const struct file * find_file(FILE *fd)
-{
- unsigned char buffer[16384], signature[16];
- struct MD5Context md5c;
- char md5sig[33];
- int i;
-
- MD5Init(&md5c);
- while ((i = (int) fread(buffer, 1, sizeof(buffer), fd)) > 0)
- MD5Update(&md5c, buffer, (unsigned) i);
- MD5Final(signature, &md5c);
-
- snprintf(md5sig, sizeof(md5sig),
- "%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x",
- signature[0], signature[1], signature[2], signature[3],
- signature[4], signature[5], signature[6], signature[7],
- signature[8], signature[9], signature[10], signature[11],
- signature[12], signature[13], signature[14], signature[15]);
-
- for (i = 0; i < FILES; ++i) {
- if (strcasecmp(md5sig, files[i].md5) == 0) {
- if (files[i].flags & DRIVER_UNSUPPORTED) {
- printf("Extracting firmware from this file is IMPOSSIBLE. (too old)\n");
- return 0;
- }
- printf("fwcutter can cut the firmware out of %s\n", cmdargs.infile);
- printf(" filename : %s\n", files[i].name);
- printf(" version : %s\n", files[i].version);
- printf(" MD5 : %s\n\n", files[i].md5);
- if (files[i].flags & MISSING_INITVAL_80211_A) {
- printf("WARNING! This firmware doesn't include support for 802.11a cards.\n");
- printf("WARNING! Use this firmware only for 802.11b/g cards.\n\n");
- }
- return &(files[i]);
- }
- }
- printf("Sorry, the input file is either wrong or not supported by fwcutter.\n");
- printf("I can't find the MD5sum %s :(\n", md5sig);
-
- return 0;
-}
-
-static void get_endianess(void)
-{
- const unsigned char x[] = { 0xde, 0xad, 0xbe, 0xef, };
- const uint32_t *p = (uint32_t *)x;
-
- if (*p == 0xdeadbeef) {
- big_endian_cpu = 1;
- } else if (*p == 0xefbeadde) {
- big_endian_cpu = 0;
- } else {
- printf("Confused: NUXI endian machine??\n");
- exit(-1);
- }
-}
-
-static void print_usage(int argc, char *argv[])
-{
- print_banner();
- printf("\nUsage: %s [OPTION] [driver.sys]\n", argv[0]);
- printf(" -l|--list List supported driver versions\n");
- printf(" -i|--identify Only identify the driver file (don't extract)\n");
- printf(" -w|--target-dir DIR Extract and write firmware to DIR\n");
- printf(" -p|--postfix \".FOO\" Postfix for firmware filenames (.FOO.fw)\n");
- printf(" -v|--version Print fwcutter version\n");
- printf(" -h|--help Print this help\n");
- printf("\nExample: %s bcmwl5.sys\n"
- " to extract the firmware blobs from bcmwl5.sys\n", argv[0]);
-}
-
-#define ARG_MATCH 0
-#define ARG_NOMATCH 1
-#define ARG_ERROR -1
-
-static int do_cmp_arg(char **argv, int *pos,
- const char *template,
- int allow_merged,
- char **param)
-{
- char *arg;
- char *next_arg;
- size_t arg_len, template_len;
-
- arg = argv[*pos];
- next_arg = argv[*pos + 1];
- arg_len = strlen(arg);
- template_len = strlen(template);
-
- if (param) {
- /* Maybe we have a merged parameter here.
- * A merged parameter is "-pfoobar" for example.
- */
- if (allow_merged && arg_len > template_len) {
- if (memcmp(arg, template, template_len) == 0) {
- *param = arg + template_len;
- return ARG_MATCH;
- }
- return ARG_NOMATCH;
- } else if (arg_len != template_len)
- return ARG_NOMATCH;
- *param = next_arg;
- }
- if (strcmp(arg, template) == 0) {
- if (param) {
- /* Skip the parameter on the next iteration. */
- (*pos)++;
- if (*param == 0) {
- printf("%s needs a parameter\n", arg);
- return ARG_ERROR;
- }
- }
- return ARG_MATCH;
- }
-
- return ARG_NOMATCH;
-}
-
-/* Simple and lean command line argument parsing. */
-static int cmp_arg(char **argv, int *pos,
- const char *long_template,
- const char *short_template,
- char **param)
-{
- int err;
-
- if (long_template) {
- err = do_cmp_arg(argv, pos, long_template, 0, param);
- if (err == ARG_MATCH || err == ARG_ERROR)
- return err;
- }
- err = ARG_NOMATCH;
- if (short_template)
- err = do_cmp_arg(argv, pos, short_template, 1, param);
- return err;
-}
-
-static int parse_args(int argc, char *argv[])
-{
- int i, res;
- char *param;
-
- if (argc < 2)
- goto out_usage;
- for (i = 1; i < argc; i++) {
- res = cmp_arg(argv, &i, "--list", "-l", 0);
- if (res == ARG_MATCH) {
- print_supported_files();
- return 1;
- } else if (res == ARG_ERROR)
- goto out;
-
- res = cmp_arg(argv, &i, "--version", "-v", 0);
- if (res == ARG_MATCH) {
- print_banner();
- return 1;
- } else if (res == ARG_ERROR)
- goto out;
-
- res = cmp_arg(argv, &i, "--help", "-h", 0);
- if (res == ARG_MATCH)
- goto out_usage;
- else if (res == ARG_ERROR)
- goto out;
-
- res = cmp_arg(argv, &i, "--identify", "-i", 0);
- if (res == ARG_MATCH) {
- cmdargs.identify_only = 1;
- continue;
- } else if (res == ARG_ERROR)
- goto out;
-
- res = cmp_arg(argv, &i, "--target-dir", "-w", ¶m);
- if (res == ARG_MATCH) {
- cmdargs.target_dir = param;
- continue;
- } else if (res == ARG_ERROR)
- goto out;
-
- res = cmp_arg(argv, &i, "--postfix", "-p", ¶m);
- if (res == ARG_MATCH) {
- cmdargs.postfix = param;
- continue;
- } else if (res == ARG_ERROR)
- goto out;
-
- cmdargs.infile = argv[i];
- break;
- }
-
- if (!cmdargs.infile)
- goto out_usage;
- return 0;
-
-out_usage:
- print_usage(argc, argv);
-out:
- return -1;
-}
-
-int main(int argc, char *argv[])
-{
- FILE *fd;
- const struct file *file;
- int err;
-
- get_endianess();
-
- cmdargs.target_dir = ".";
- cmdargs.postfix = "";
- err = parse_args(argc, argv);
- if (err == 1)
- return 0;
- else if (err != 0)
- return err;
-
- fd = fopen(cmdargs.infile, "rb");
- if (!fd) {
- fprintf(stderr, "Cannot open input file %s\n", cmdargs.infile);
- return 2;
- }
-
- err = -1;
- file = find_file(fd);
- if (!file)
- goto out_close;
- if (cmdargs.identify_only) {
- err = 0;
- goto out_close;
- }
-
- extract_fw(FIRMWARE_UCODE_2, file->flags, file->uc2_pos, file->uc2_length);
- extract_fw(FIRMWARE_UCODE_4, file->flags, file->uc4_pos, file->uc4_length);
- extract_fw(FIRMWARE_UCODE_5, file->flags, file->uc5_pos, file->uc5_length);
- extract_fw(FIRMWARE_UCODE_11, file->flags, file->uc11_pos, file->uc11_length);
- extract_fw(FIRMWARE_PCM_4, file->flags, file->pcm4_pos, file->pcm4_length);
- extract_fw(FIRMWARE_PCM_5, file->flags, file->pcm5_pos, file->pcm5_length);
- extract_iv(file->flags, file->iv_pos);
-
- err = 0;
-out_close:
- fclose(fd);
-
- return err;
-}
projects / openwrt / svn-archive / archive.git / blobdiff