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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>
*/
#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>
/* 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 */
/*
* 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 */
};
/* default padding size */
#define IH_PAD_BYTES (96)
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);
}
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;
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;
}
}
if (!infname || !outfname) {
usage(argv[0]);
exit(1);
}
ifd = open(infname, O_RDONLY);
if (ifd < 0) {
fprintf(stderr,
"could not open input file. (errno = %d)\n", errno);
exit(1);
}
ofd = open(outfname, O_WRONLY | O_CREAT, 0644);
if (ofd < 0) {
fprintf(stderr,
"could not open output file. (errno = %d)\n", errno);
exit(1);
}
if (fstat(ifd, &statbuf) < 0) {
fprintf(stderr,
"could not fstat input file. (errno = %d)\n", errno);
exit(1);
}
filebuf = malloc(statbuf.st_size + padsz);
if (!filebuf) {
fprintf(stderr, "buffer allocation failed\n");
exit(1);
}
rsz = read(ifd, filebuf, OrignalHL);
if (rsz != OrignalHL) {
fprintf(stderr,
"could not read input file (errno = %d).\n", errno);
exit(1);
}
memset(&(filebuf[OrignalHL]), 0, padsz);
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);
}
imgh = (struct image_header *)filebuf;
imgh->ih_hcrc = 0;
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));
crc_recalc = crc32(0, filebuf, sizeof(*imgh));
imgh->ih_hcrc = htonl(crc_recalc);
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);
}
return 0;
}
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