Commit c088a108 authored by Peter Korsgaard's avatar Peter Korsgaard Committed by Gerald Van Baren
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fdt_resize(): fix actualsize calculations with unaligned blobs

The code in fdt_resize() to extend the fdt size to end on a page boundary
is wrong for fdt's not located at an address aligned on a page boundary.
What's even worse, the code would make actualsize shrink rather than grow
if (blob & 0xfff) was bigger than the amount of padding added by ALIGN(),
causing fdt_add_mem_rsv to fail.

Fix it by aligning end address (blob + size) to a page boundary instead.
For aligned fdt's this is equivalent to what we had before.
Signed-off-by: default avatarPeter Korsgaard <>
parent fadad157
......@@ -610,7 +610,7 @@ int fdt_resize(void *blob)
fdt_size_dt_strings(blob) + sizeof(struct fdt_reserve_entry);
/* Make it so the fdt ends on a page boundary */
actualsize = ALIGN(actualsize, 0x1000);
actualsize = ALIGN(actualsize + ((uint)blob & 0xfff), 0x1000);
actualsize = actualsize - ((uint)blob & 0xfff);
/* Change the fdt header to reflect the correct size */
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