efi_loader: catch misspelled bootefi subcommand
If 'bootefi hello' or 'bootefi selftest' can be executed depends on the
configuration.
If an invalid non-numeric 1st argument is passed to bootefi, e.g.
'bootefi hola', this string is converted to 0 and U-Boot jumps to
this typically invalid address.
With the patch the online help is shown instead.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index 545cfec..4233d36 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -373,6 +373,9 @@
saddr = argv[1];
addr = simple_strtoul(saddr, NULL, 16);
+ /* Check that a numeric value was passed */
+ if (!addr && *saddr != '0')
+ return CMD_RET_USAGE;
if (argc > 2) {
sfdt = argv[2];