From 96165abec2da60c466659fa0e68e06d97587d51a Mon Sep 17 00:00:00 2001 From: Rafaël Carré Date: Thu, 28 May 2009 18:27:08 +0000 Subject: FS#10253 : mkamsboot v1.0 - Bump version to 1.0 - Add Clipv2 target - Make mkamsboot work as a library (work by domonoky : FS#10185, with a few modifications by me) . Use a macro with variadic arguments for error cases in functions which might error. . Add detailed descriptions to functions exported by the library (in the header file) - modify bin2c.c to produce only one pair of .c/.h files with several files embedded in it - move files needing to be built by an ARM cross compiler into dualboot/ - commit produced .c/.h files (containing nrv2e_d8.S and dualboot.S built for Clip, Fuze, e200v2, c200v2, m200v4, Clipv2) - Write a real README file - cosmetics: indent dualboot.S properly, remove trailing spaces, limit lines to 80 characters - comments: add/correct comments in dualboot.S and mkamsboot.c - move back extract_fw.c to utils/AMS/hacking git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21118 a1c6a512-1295-4272-9138-f99709370657 --- utils/AMS/hacking/extract_fw.c | 132 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 utils/AMS/hacking/extract_fw.c (limited to 'utils/AMS') diff --git a/utils/AMS/hacking/extract_fw.c b/utils/AMS/hacking/extract_fw.c new file mode 100644 index 0000000000..bee6a234c4 --- /dev/null +++ b/utils/AMS/hacking/extract_fw.c @@ -0,0 +1,132 @@ +/* + +extract_fw.c - extract the main firmware image from a Sansa V2 (AMS) firmware + file + +Copyright (C) Dave Chapman 2008 + +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; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA + +*/ + + +#include +#include +#include +#include +#include +#include +#include +#include + + +/* Win32 compatibility */ +#ifndef O_BINARY +#define O_BINARY 0 +#endif + + +static off_t filesize(int fd) { + struct stat buf; + + if (fstat(fd,&buf) < 0) { + perror("[ERR] Checking filesize of input file"); + return -1; + } else { + return(buf.st_size); + } +} + +static uint32_t get_uint32le(unsigned char* p) +{ + return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24); +} + +void usage(void) +{ + printf("Usage: extract_fw \n"); + + exit(1); +} + +int main(int argc, char* argv[]) +{ + char *infile, *outfile; + int fdin, fdout; + off_t len; + uint32_t n; + unsigned char* buf; + uint32_t firmware_size; + + if(argc != 3) { + usage(); + } + + infile = argv[1]; + outfile = argv[2]; + + /* Open the firmware file */ + fdin = open(infile,O_RDONLY|O_BINARY); + + if (fdin < 0) { + fprintf(stderr,"[ERR] Could not open %s for reading\n",infile); + return 1; + } + + if ((len = filesize(fdin)) < 0) + return 1; + + /* We will need no more memory than the total size plus the bootloader size + padded to a boundary */ + if ((buf = malloc(len)) == NULL) { + fprintf(stderr,"[ERR] Could not allocate buffer for input file (%d bytes)\n",(int)len); + return 1; + } + + n = read(fdin, buf, len); + + if (n != (uint32_t)len) { + fprintf(stderr,"[ERR] Could not read firmware file\n"); + return 1; + } + + close(fdin); + + /* Get the firmware size */ + if (get_uint32le(&buf[0x04])==0x0000f000) + firmware_size = get_uint32le(&buf[0x10]); /* v2 format */ + else + firmware_size = get_uint32le(&buf[0x0c]); /* v1 format */ + + fdout = open(outfile, O_CREAT|O_TRUNC|O_WRONLY|O_BINARY,0666); + + if (fdout < 0) { + fprintf(stderr,"[ERR] Could not open %s for writing\n",outfile); + return 1; + } + + n = write(fdout, buf + 0x400, firmware_size); + + if (n != (uint32_t)firmware_size) { + fprintf(stderr,"[ERR] Could not write firmware block\n"); + return 1; + } + + /* Clean up */ + close(fdout); + free(buf); + + return 0; +} -- cgit v1.2.3