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-rw-r--r--package/mtd/src/fis.c26
1 files changed, 19 insertions, 7 deletions
diff --git a/package/mtd/src/fis.c b/package/mtd/src/fis.c
index 3108c5a9e..b285d24db 100644
--- a/package/mtd/src/fis.c
+++ b/package/mtd/src/fis.c
@@ -146,7 +146,7 @@ fis_remap(struct fis_part *old, int n_old, struct fis_part *new, int n_new)
struct fis_image_desc *desc;
struct fis_part *part;
uint32_t offset = 0, size = 0;
- char *end, *tmp;
+ char *start, *end, *tmp;
int i;
desc = fis_open();
@@ -156,6 +156,7 @@ fis_remap(struct fis_part *old, int n_old, struct fis_part *new, int n_new)
if (!quiet)
fprintf(stderr, "Updating FIS table... \n");
+ start = (char *) desc;
end = (char *) desc + fis_erasesize;
while ((char *) desc < end) {
if (!desc->hdr.name[0] || (desc->hdr.name[0] == 0xff))
@@ -167,9 +168,12 @@ fis_remap(struct fis_part *old, int n_old, struct fis_part *new, int n_new)
if (!strcmp((char *) desc->hdr.name, "RedBoot"))
redboot = desc;
+ /* update max offset */
+ if (offset < desc->hdr.flash_base)
+ offset = desc->hdr.flash_base;
+
for (i = 0; i < n_old; i++) {
if (!strncmp((char *) desc->hdr.name, (char *) old[i].name, sizeof(desc->hdr.name))) {
- size += desc->hdr.size;
last = desc;
if (!first)
first = desc;
@@ -180,13 +184,21 @@ fis_remap(struct fis_part *old, int n_old, struct fis_part *new, int n_new)
}
desc--;
- if (desc == last) {
- desc = fisdir;
+ /* determine size of available space */
+ desc = (struct fis_image_desc *) start;
+ while ((char *) desc < end) {
+ if (!desc->hdr.name[0] || (desc->hdr.name[0] == 0xff))
+ break;
+
+ if (desc->hdr.flash_base > last->hdr.flash_base &&
+ desc->hdr.flash_base < offset)
+ offset = desc->hdr.flash_base;
+
+ desc++;
}
+ desc--;
- /* size fixup */
- if (desc && (last->hdr.flash_base < desc->hdr.flash_base - last->hdr.size))
- size += (desc->hdr.flash_base - last->hdr.flash_base) - last->hdr.size;
+ size = offset - first->hdr.flash_base;
#ifdef notyet
desc = first - 1;