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-rw-r--r--cmd/fdt.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/cmd/fdt.c b/cmd/fdt.c
index 0f5923e..58af772 100644
--- a/cmd/fdt.c
+++ b/cmd/fdt.c
@@ -639,6 +639,27 @@ static int do_fdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
#endif
}
+#ifdef CONFIG_OF_LIBFDT_OVERLAY
+ /* apply an overlay */
+ else if (strncmp(argv[1], "ap", 2) == 0) {
+ unsigned long addr;
+ struct fdt_header *blob;
+
+ if (argc != 3)
+ return CMD_RET_USAGE;
+
+ if (!working_fdt)
+ return CMD_RET_FAILURE;
+
+ addr = simple_strtoul(argv[2], NULL, 16);
+ blob = map_sysmem(addr, 0);
+ if (!fdt_valid(&blob))
+ return CMD_RET_FAILURE;
+
+ if (fdt_overlay_apply(working_fdt, blob))
+ return CMD_RET_FAILURE;
+ }
+#endif
/* resize the fdt */
else if (strncmp(argv[1], "re", 2) == 0) {
fdt_shrink_to_minimum(working_fdt);
@@ -1025,6 +1046,9 @@ static int fdt_print(const char *pathp, char *prop, int depth)
#ifdef CONFIG_SYS_LONGHELP
static char fdt_help_text[] =
"addr [-c] <addr> [<length>] - Set the [control] fdt location to <addr>\n"
+#ifdef CONFIG_OF_LIBFDT_OVERLAY
+ "fdt apply <addr> - Apply overlay to the DT\n"
+#endif
#ifdef CONFIG_OF_BOARD_SETUP
"fdt boardsetup - Do board-specific set up\n"
#endif