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authorVishnu Swaroop Duddu <duddu.swaroop@intel.com>2016-07-07 14:44:38 +0200
committerZoltan HERPAI <wigyori@uid0.hu>2016-07-07 14:44:38 +0200
commitd960c7440183d6f8666add05e81232dea5918e38 (patch)
tree85806ea94b42c0809fe5a330e182c94e7a991cc9 /tools/patch-image/src/patch-dtb.c
parent50c4176f7356d895535ab7da8892d00f13f5683a (diff)
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tools: patch-image: Added optional size option
Added optional command line option for patch-image tool Default 16KB size is still maintained as this is an optional argument. if one wants to specify or increase size they can provide this option. sample usage: patch-dtb <file> <dtb> [dtb max size] Signed-off-by: Vishnu Swaroop Duddu <duddu.swaroop@intel.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Diffstat (limited to 'tools/patch-image/src/patch-dtb.c')
-rw-r--r--tools/patch-image/src/patch-dtb.c22
1 files changed, 14 insertions, 8 deletions
diff --git a/tools/patch-image/src/patch-dtb.c b/tools/patch-image/src/patch-dtb.c
index 7812eb9b39..8d186236c1 100644
--- a/tools/patch-image/src/patch-dtb.c
+++ b/tools/patch-image/src/patch-dtb.c
@@ -30,7 +30,6 @@
#include <sys/stat.h>
#include <string.h>
-#define SEARCH_SPACE (16 * 1024)
#define DTB_MAX (16 * 1024)
int main(int argc, char **argv)
@@ -38,11 +37,18 @@ int main(int argc, char **argv)
int fd, fddtb, found = 0, len, ret = -1;
char *ptr, *ptrdtb, *p;
struct stat s;
+ unsigned int search_space , dtb_max_size;
- if (argc != 3) {
- fprintf(stderr, "Usage: %s <file> <dtb>\n", argv[0]);
+ if (argc <= 2 || argc > 4) {
+ fprintf(stderr, "Usage: %s <file> <dtb> [size]\n", argv[0]);
goto err1;
+ } else if (argc == 3) {
+ fprintf(stdout, "DT size used is default of 16KB\n");
+ search_space = dtb_max_size = DTB_MAX;
+ } else {
+ search_space = dtb_max_size = atoi(argv[3]);
}
+
fddtb = open(argv[1], O_RDONLY);
if (!fddtb)
goto err1;
@@ -53,24 +59,24 @@ int main(int argc, char **argv)
}
len = s.st_size;
- if (len + 8 > DTB_MAX) {
+ if (len + 8 > dtb_max_size) {
fprintf(stderr, "DTB too big\n");
goto err1;
}
if (((fddtb = open(argv[2], O_RDONLY)) < 0) ||
- (ptrdtb = (char *) mmap(0, DTB_MAX, PROT_READ, MAP_SHARED, fddtb, 0)) == (void *) (-1)) {
+ (ptrdtb = (char *) mmap(0, dtb_max_size, PROT_READ, MAP_SHARED, fddtb, 0)) == (void *) (-1)) {
fprintf(stderr, "Could not open DTB");
goto err2;
}
if (((fd = open(argv[1], O_RDWR)) < 0) ||
- (ptr = (char *) mmap(0, SEARCH_SPACE + DTB_MAX, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == (void *) (-1)) {
+ (ptr = (char *) mmap(0, search_space + dtb_max_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == (void *) (-1)) {
fprintf(stderr, "Could not open kernel image");
goto err3;
}
- for (p = ptr; p < (ptr + SEARCH_SPACE); p += 4) {
+ for (p = ptr; p < (ptr + search_space); p += 4) {
if (memcmp(p, "OWRTDTB:", 8) == 0) {
found = 1;
p += 8;
@@ -82,7 +88,7 @@ int main(int argc, char **argv)
goto err4;
}
- memset(p, 0, DTB_MAX - 8);
+ memset(p, 0, dtb_max_size - 8);
memcpy(p, ptrdtb, len);
msync(p, len, MS_SYNC|MS_INVALIDATE);
ret = 0;