mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-26 10:50:48 +02:00
338ed10277
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20437 3c298f89-4303-0410-b956-a3cf2f4a3e73
191 lines
5.0 KiB
C
191 lines
5.0 KiB
C
/*
|
|
lzma2eva - convert lzma-compressed file to AVM EVA bootloader format
|
|
Copyright (C) 2007 Enrik Berkhan <Enrik.Berkhan@inka.de>
|
|
|
|
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 02110-1301 USA
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <zlib.h> /* crc32 */
|
|
|
|
#define checksum_add32(csum, data) \
|
|
csum += ((uint8_t *)&data)[0]; \
|
|
csum += ((uint8_t *)&data)[1]; \
|
|
csum += ((uint8_t *)&data)[2]; \
|
|
csum += ((uint8_t *)&data)[3];
|
|
|
|
void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "usage: lzma2eva <loadadddr> <entry> <lzmafile> <evafile>\n");
|
|
exit(1);
|
|
}
|
|
|
|
void
|
|
pexit(const char *msg)
|
|
{
|
|
perror(msg);
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
|
|
const char *infile, *outfile;
|
|
FILE *in, *out;
|
|
static const uint8_t buf[4096];
|
|
size_t elems;
|
|
|
|
uint8_t properties;
|
|
uint32_t dictsize;
|
|
uint64_t datasize;
|
|
|
|
uint32_t magic = 0xfeed1281L;
|
|
uint32_t reclength = 0;
|
|
fpos_t reclengthpos;
|
|
uint32_t loadaddress = 0;
|
|
uint32_t type = 0x075a0201L; /* might be 7Z 2.1? */
|
|
uint32_t checksum = 0;
|
|
|
|
uint32_t compsize = 0;
|
|
fpos_t compsizepos;
|
|
uint32_t datasize32 = 0;
|
|
uint32_t datacrc32 = crc32(0, 0, 0);
|
|
|
|
uint32_t zero = 0;
|
|
uint32_t entry = 0;
|
|
|
|
if (argc != 5)
|
|
usage();
|
|
|
|
/* "parse" command line */
|
|
loadaddress = strtoul(argv[1], 0, 0);
|
|
entry = strtoul(argv[2], 0, 0);
|
|
infile = argv[3];
|
|
outfile = argv[4];
|
|
|
|
in = fopen(infile, "rb");
|
|
if (!in)
|
|
pexit("fopen");
|
|
out = fopen(outfile, "w+b");
|
|
if (!out)
|
|
pexit("fopen");
|
|
|
|
/* read LZMA header */
|
|
if (1 != fread(&properties, sizeof properties, 1, in))
|
|
pexit("fread");
|
|
if (1 != fread(&dictsize, sizeof dictsize, 1, in))
|
|
pexit("fread");
|
|
if (1 != fread(&datasize, sizeof datasize, 1, in))
|
|
pexit("fread");
|
|
|
|
/* write EVA header */
|
|
if (1 != fwrite(&magic, sizeof magic, 1, out))
|
|
pexit("fwrite");
|
|
if (fgetpos(out, &reclengthpos))
|
|
pexit("fgetpos");
|
|
if (1 != fwrite(&reclength, sizeof reclength, 1, out))
|
|
pexit("fwrite");
|
|
if (1 != fwrite(&loadaddress, sizeof loadaddress, 1, out))
|
|
pexit("fwrite");
|
|
if (1 != fwrite(&type, sizeof type, 1, out))
|
|
pexit("fwrite");
|
|
|
|
/* write EVA LZMA header */
|
|
if (fgetpos(out, &compsizepos))
|
|
pexit("fgetpos");
|
|
if (1 != fwrite(&compsize, sizeof compsize, 1, out))
|
|
pexit("fwrite");
|
|
/* XXX check length */
|
|
datasize32 = (uint32_t)datasize;
|
|
if (1 != fwrite(&datasize32, sizeof datasize32, 1, out))
|
|
pexit("fwrite");
|
|
if (1 != fwrite(&datacrc32, sizeof datacrc32, 1, out))
|
|
pexit("fwrite");
|
|
|
|
/* write modified LZMA header */
|
|
if (1 != fwrite(&properties, sizeof properties, 1, out))
|
|
pexit("fwrite");
|
|
if (1 != fwrite(&dictsize, sizeof dictsize, 1, out))
|
|
pexit("fwrite");
|
|
if (1 != fwrite(&zero, 3, 1, out))
|
|
pexit("fwrite");
|
|
|
|
/* copy compressed data, calculate crc32 */
|
|
while (0 < (elems = fread(&buf, sizeof buf[0], sizeof buf, in))) {
|
|
compsize += elems;
|
|
if (elems != fwrite(&buf, sizeof buf[0], elems, out))
|
|
pexit("fwrite");
|
|
datacrc32 = crc32(datacrc32, buf, elems);
|
|
}
|
|
if (ferror(in))
|
|
pexit("fread");
|
|
fclose(in);
|
|
|
|
/* re-write record length */
|
|
reclength = compsize + 24;
|
|
if (fsetpos(out, &reclengthpos))
|
|
pexit("fsetpos");
|
|
if (1 != fwrite(&reclength, sizeof reclength, 1, out))
|
|
pexit("fwrite");
|
|
|
|
/* re-write EVA LZMA header including size and data crc */
|
|
if (fsetpos(out, &compsizepos))
|
|
pexit("fsetpos");
|
|
if (1 != fwrite(&compsize, sizeof compsize, 1, out))
|
|
pexit("fwrite");
|
|
if (1 != fwrite(&datasize32, sizeof datasize32, 1, out))
|
|
pexit("fwrite");
|
|
if (1 != fwrite(&datacrc32, sizeof datacrc32, 1, out))
|
|
pexit("fwrite");
|
|
|
|
/* calculate record checksum */
|
|
checksum += reclength;
|
|
checksum += loadaddress;
|
|
checksum_add32(checksum, type);
|
|
checksum_add32(checksum, compsize);
|
|
checksum_add32(checksum, datasize32);
|
|
checksum_add32(checksum, datacrc32);
|
|
if (fseek(out, 0, SEEK_CUR))
|
|
pexit("fseek");
|
|
while (0 < (elems = fread(&buf, sizeof buf[0], sizeof buf, out))) {
|
|
size_t i;
|
|
for (i = 0; i < elems; ++i)
|
|
checksum += buf[i];
|
|
}
|
|
if (ferror(out))
|
|
pexit("fread");
|
|
if (fseek(out, 0, SEEK_CUR))
|
|
pexit("fseek");
|
|
|
|
checksum = ~checksum + 1;
|
|
if (1 != fwrite(&checksum, sizeof checksum, 1, out))
|
|
pexit("fwrite");
|
|
|
|
/* write entry record */
|
|
if (1 != fwrite(&zero, sizeof zero, 1, out))
|
|
pexit("fwrite");
|
|
if (1 != fwrite(&entry, sizeof entry, 1, out))
|
|
pexit("fwrite");
|
|
|
|
if (fclose(out))
|
|
pexit("fclose");
|
|
|
|
return 0;
|
|
}
|