nios2: fix bootm error on fdt args

We should check argv[3] only if there are enough args. Otherwise,
it might cause invalid memory access fault.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Scott McNutt <smcnutt@psyent.com>
This commit is contained in:
Thomas Chou 2010-07-30 14:12:12 +08:00 committed by Scott McNutt
parent bd23130781
commit 62a0557382
1 changed files with 1 additions and 1 deletions

View File

@ -42,7 +42,7 @@ int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *ima
if (boot_get_fdt(flag, argc, argv, images, &of_flat_tree, &of_size))
return 1;
#endif
if (!of_flat_tree)
if (!of_flat_tree && argc > 3)
of_flat_tree = (char *)simple_strtoul(argv[3], NULL, 16);
if (of_flat_tree)
initrd_end = (ulong)of_flat_tree;