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authorPiotr Dymacz <pepe2k@gmail.com>2017-07-04 15:40:43 +0200
committerPiotr Dymacz <pepe2k@gmail.com>2017-07-04 15:40:43 +0200
commita3d232e1e6e5a49e7d1c1d9bc56be9ebd8ae6171 (patch)
treeeb3f5c6ecc8fdc1fab37c6d8a32bd215ffe92709
parentcf23547e57420cefeca11daf03d71e92629a6d00 (diff)
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firmware-utils: mktplinkfw: add option for endianness swap
This adds command line option in "mktplinkfw" tool for endianness swap in kernel load address and entry point fields. As in "mktplinkfw2" tool, we will need this for little-endian targets, like "ramips". Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
-rw-r--r--tools/firmware-utils/src/mktplinkfw.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/tools/firmware-utils/src/mktplinkfw.c b/tools/firmware-utils/src/mktplinkfw.c
index fbf89609c2..93db441357 100644
--- a/tools/firmware-utils/src/mktplinkfw.c
+++ b/tools/firmware-utils/src/mktplinkfw.c
@@ -19,6 +19,8 @@
#include <libgen.h>
#include <getopt.h> /* for getopt() */
#include <stdarg.h>
+#include <stdbool.h>
+#include <endian.h>
#include <errno.h>
#include <sys/stat.h>
@@ -123,6 +125,7 @@ static uint32_t reserved_space;
static struct file_info inspect_info;
static int extract = 0;
+static bool endian_swap = false;
static const char md5salt_normal[MD5SUM_LEN] = {
0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
@@ -256,6 +259,7 @@ static void usage(int status)
"\n"
"Options:\n"
" -c use combined kernel image\n"
+" -e swap endianness in kernel load address and entry point\n"
" -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
" -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
" -H <hwid> use hardware id specified with <hwid>\n"
@@ -521,6 +525,11 @@ static void fill_header(char *buf, int len)
);
}
+ if (endian_swap) {
+ hdr->kernel_la = bswap_32(hdr->kernel_la);
+ hdr->kernel_ep = bswap_32(hdr->kernel_ep);
+ }
+
get_md5(buf, len, hdr->md5sum1);
}
@@ -805,7 +814,7 @@ int main(int argc, char *argv[])
while ( 1 ) {
int c;
- c = getopt(argc, argv, "a:H:E:F:L:m:V:N:W:C:ci:k:r:R:o:xX:hsSjv:");
+ c = getopt(argc, argv, "a:H:E:F:L:m:V:N:W:C:ci:k:r:R:o:xX:ehsSjv:");
if (c == -1)
break;
@@ -873,6 +882,9 @@ int main(int argc, char *argv[])
case 'x':
extract = 1;
break;
+ case 'e':
+ endian_swap = true;
+ break;
case 'h':
usage(EXIT_SUCCESS);
break;