There are cases that the devicetree blob is placed after _end, such as fdt_find_separate() returns _end. This is in bss area cleared before relocation.
When GD_FLG_SKIP_RELOC is set, the blob is still in bss, but will be cleared. As a result, the devicetree become invalid.
To avoid this issue, should relocate it to the new fdt area using the latter condition in reloc_fdt().
Signed-off-by: Kunihiko Hayashi hayashi.kunihiko@socionext.com --- common/board_f.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/common/board_f.c b/common/board_f.c index 51d2f3c365e9..9a245872d190 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -622,7 +622,8 @@ static int init_post(void) static int reloc_fdt(void) { if (!IS_ENABLED(CONFIG_OF_EMBED)) { - if (gd->flags & GD_FLG_SKIP_RELOC) + if (gd->flags & GD_FLG_SKIP_RELOC && + gd->fdt_blob != &_end) return 0; if (gd->new_fdt) { memcpy(gd->new_fdt, gd->fdt_blob,