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firmware-utils: mkedimaximg: add "big-endianness mode" option

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In addition to the default little-endianness format, I added a mode
so that we can generate firmware with big-endianness format.

example: ELECOM WRC-300GHBK2-I (QCA9563)

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
This commit is contained in:
INAGAKI Hiroshi 2018-09-10 09:29:39 +02:00 committed by John Crispin
parent 628eb271dc
commit 7a67b437e7
1 changed files with 35 additions and 8 deletions
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33
tools/firmware-utils/src/mkedimaximg.c
View file

@ -17,12 +17,19 @@
#include <sys/stat.h>
#include <endian.h> /* for __BYTE_ORDER */
#define FALSE 0
#define TRUE 1
#if (__BYTE_ORDER == __LITTLE_ENDIAN)
# define HOST_TO_LE16(x) (x)
# define HOST_TO_LE32(x) (x)
# define HOST_TO_BE16(x) bswap_16(x)
# define HOST_TO_BE32(x) bswap_32(x)
#else
# define HOST_TO_LE16(x) bswap_16(x)
# define HOST_TO_LE32(x) bswap_32(x)
# define HOST_TO_BE16(x) (x)
# define HOST_TO_BE32(x) (x)
#endif
struct header
@ -47,6 +54,7 @@ struct buf
};
static char *progname;
static int force_be = FALSE;
static void usage(int status)
{
@ -61,7 +69,8 @@ static void usage(int status)
" -i <file> read input from file <file>\n"
" -o <file> write output to file <file>\n"
" -f <flash> set flash address to <flash>\n"
" -S <start> set start address to <start>\n");
" -S <start> set start address to <start>\n"
" -b big-endianness mode\n");
exit(status);
}
@ -83,8 +92,12 @@ static unsigned short fwcsum (struct buf *buf) {
int i;
unsigned short ret = 0;
for (i = 0; i < buf->size / 2; i++)
for (i = 0; i < buf->size / 2; i++) {
if (force_be == FALSE)
ret -= ((unsigned short *) buf->start)[i];
else
ret -= HOST_TO_BE16(((unsigned short *) buf->start)[i]);
}
return ret;
}
@ -144,7 +157,7 @@ int main(int argc, char **argv)
header.flash = header.size = header.start = 0;
progname = basename(argv[0]);
while((c = getopt(argc, argv, "i:o:m:s:f:S:h")) != -1) {
while((c = getopt(argc, argv, "i:o:m:s:f:S:h:b")) != -1) {
switch (c) {
case 'i':
ifinfo.name = optarg;
@ -181,6 +194,9 @@ int main(int argc, char **argv)
usage(EXIT_FAILURE);
}
break;
case 'b':
force_be = TRUE;
break;
default:
usage(EXIT_FAILURE);
break;
@ -241,12 +257,23 @@ int main(int argc, char **argv)
if (fwread(&ifinfo, &ibuf))
usage(EXIT_FAILURE);
if (force_be == FALSE) {
header.flash = HOST_TO_LE32(header.flash);
header.size = HOST_TO_LE32(obuf.size - sizeof(struct header));
header.start = HOST_TO_LE32(header.start);
} else {
header.flash = HOST_TO_BE32(header.flash);
header.size = HOST_TO_BE32(obuf.size - sizeof(struct header));
header.start = HOST_TO_BE32(header.start);
}
memcpy (obuf.start, &header, sizeof(struct header));
if (force_be == FALSE)
csum = HOST_TO_LE16(fwcsum(&ibuf));
else
csum = HOST_TO_BE16(fwcsum(&ibuf));
memcpy(obuf.start + obuf.size - sizeof(unsigned short),
&csum, sizeof(unsigned short));