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ramips: add missing information to dlink headers
Add additional header information required for newer bootloaders found on DIR-2660-A1 & A2. Also remove the MTD splitter compatible from the second firmware partition, as OpenWrt only supports handling of the first one. Signed-off-by: Alan Luck <luckyhome2008@gmail.com> [rephrase commit message, remove removal of read-only flags] Signed-off-by: David Bauer <mail@david-bauer.net>
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// SPDX-License-Identifier: GPL-2.0-or-later | ||
/* | ||
* uimage_sgehdr.c : add 96 bytes of extra header information after the normal tail of uimage header | ||
* this is an edited version of uimage_padhdr.c | ||
* | ||
* Copyright (C) 2019 NOGUCHI Hiroshi <drvlabo@gmail.com> | ||
*/ | ||
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#include <stdio.h> | ||
#include <errno.h> | ||
#include <unistd.h> | ||
#include <stdlib.h> | ||
#include <string.h> | ||
#include <fcntl.h> | ||
#include <sys/stat.h> | ||
#include <arpa/inet.h> | ||
#include <zlib.h> | ||
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/* from u-boot/include/image.h */ | ||
#define IH_NMLEN 32 /* Image Name Length */ | ||
#define SGE_PRODUCTLEN 64 /* sge_Product Length */ | ||
#define SGE_VERSIONLEN 16 /* sge Version Length */ | ||
#define OrignalHL 64 /* Original Header Length */ | ||
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/* | ||
* SGE format image header, | ||
* all data in network byte order (aka natural aka bigendian). | ||
*/ | ||
struct image_header { | ||
uint32_t ih_magic; /* Image Header Magic Number */ | ||
uint32_t ih_hcrc; /* Image Header CRC Checksum */ | ||
uint32_t ih_time; /* Image Creation Timestamp */ | ||
uint32_t ih_size; /* Image Data Size */ | ||
uint32_t ih_load; /* Data Load Address */ | ||
uint32_t ih_ep; /* Entry Point Address */ | ||
uint32_t ih_dcrc; /* Image Data CRC Checksum */ | ||
uint8_t ih_os; /* Operating System */ | ||
uint8_t ih_arch; /* CPU architecture */ | ||
uint8_t ih_type; /* Image Type */ | ||
uint8_t ih_comp; /* Compression Type */ | ||
uint8_t ih_name[IH_NMLEN]; /* Image Name */ | ||
uint8_t sgeih_p[SGE_PRODUCTLEN]; /* sge_Product */ | ||
uint8_t sgeih_sv[SGE_VERSIONLEN]; /* sge Software Version */ | ||
uint8_t sgeih_hv[SGE_VERSIONLEN]; /* sge Hardware Version */ | ||
}; | ||
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/* default padding size */ | ||
#define IH_PAD_BYTES (96) | ||
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static void usage(char *prog) | ||
{ | ||
fprintf(stderr, | ||
"%s -i <input_uimage_file> -o <output_file> -m <model> -h <hardware version> -s <software version>\n", | ||
prog); | ||
} | ||
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int main(int argc, char *argv[]) | ||
{ | ||
struct stat statbuf; | ||
u_int8_t *filebuf; | ||
int ifd; | ||
int ofd; | ||
ssize_t rsz; | ||
u_int32_t crc_recalc; | ||
struct image_header *imgh; | ||
int opt; | ||
char *infname = NULL; | ||
char *outfname = NULL; | ||
char *model = NULL; | ||
char *hversion = NULL; | ||
char *sversion = NULL; | ||
int padsz = IH_PAD_BYTES; | ||
int ltmp; | ||
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while ((opt = getopt(argc, argv, "i:o:m:h:s:")) != -1) { | ||
switch (opt) { | ||
case 'i': | ||
infname = optarg; | ||
break; | ||
case 'o': | ||
outfname = optarg; | ||
break; | ||
case 'm': | ||
model = optarg; | ||
break; | ||
case 'h': | ||
hversion = optarg; | ||
break; | ||
case 's': | ||
sversion = optarg; | ||
break; | ||
default: | ||
break; | ||
} | ||
} | ||
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if (!infname || !outfname) { | ||
usage(argv[0]); | ||
exit(1); | ||
} | ||
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ifd = open(infname, O_RDONLY); | ||
if (ifd < 0) { | ||
fprintf(stderr, | ||
"could not open input file. (errno = %d)\n", errno); | ||
exit(1); | ||
} | ||
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ofd = open(outfname, O_WRONLY | O_CREAT, 0644); | ||
if (ofd < 0) { | ||
fprintf(stderr, | ||
"could not open output file. (errno = %d)\n", errno); | ||
exit(1); | ||
} | ||
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if (fstat(ifd, &statbuf) < 0) { | ||
fprintf(stderr, | ||
"could not fstat input file. (errno = %d)\n", errno); | ||
exit(1); | ||
} | ||
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filebuf = malloc(statbuf.st_size + padsz); | ||
if (!filebuf) { | ||
fprintf(stderr, "buffer allocation failed\n"); | ||
exit(1); | ||
} | ||
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rsz = read(ifd, filebuf, OrignalHL); | ||
if (rsz != OrignalHL) { | ||
fprintf(stderr, | ||
"could not read input file (errno = %d).\n", errno); | ||
exit(1); | ||
} | ||
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memset(&(filebuf[OrignalHL]), 0, padsz); | ||
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rsz = read(ifd, &(filebuf[sizeof(*imgh)]), | ||
statbuf.st_size - OrignalHL); | ||
if (rsz != (int32_t)(statbuf.st_size - OrignalHL)) { | ||
fprintf(stderr, | ||
"could not read input file (errno = %d).\n", errno); | ||
exit(1); | ||
} | ||
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imgh = (struct image_header *)filebuf; | ||
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imgh->ih_hcrc = 0; | ||
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strncpy(imgh->sgeih_p, model, sizeof(imgh->sgeih_p)); | ||
strncpy(imgh->sgeih_sv, sversion, sizeof(imgh->sgeih_sv)); | ||
strncpy(imgh->sgeih_hv, hversion, sizeof(imgh->sgeih_hv)); | ||
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crc_recalc = crc32(0, filebuf, sizeof(*imgh)); | ||
imgh->ih_hcrc = htonl(crc_recalc); | ||
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rsz = write(ofd, filebuf, statbuf.st_size + padsz); | ||
if (rsz != (int32_t)statbuf.st_size + padsz) { | ||
fprintf(stderr, | ||
"could not write output file (errnor = %d).\n", errno); | ||
exit(1); | ||
} | ||
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return 0; | ||
} |