summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--util/nvmutil/nvmutil.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c
index 0ccfaf32..35abbfae 100644
--- a/util/nvmutil/nvmutil.c
+++ b/util/nvmutil/nvmutil.c
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: MIT */
/* SPDX-FileCopyrightText: 2022, 2023 Leah Rowe <leah@libreboot.org> */
+/* SPDX-FileCopyrightText: 2023 Riku Viitanen <riku.viitanen@protonmail.com> */
#include <sys/stat.h>
@@ -61,8 +62,16 @@ void (*cmd)(void) = NULL;
int
main(int argc, char *argv[])
{
- if (argc < 3)
+ if (argc < 3) {
+ fprintf(stderr, "USAGE:\n");
+ fprintf(stderr, " %s FILE dump\n", argv[0]);
+ fprintf(stderr, " %s FILE setmac [MAC]\n", argv[0]);
+ fprintf(stderr, " %s FILE swap\n", argv[0]);
+ fprintf(stderr, " %s FILE copy 0|1\n", argv[0]);
+ fprintf(stderr, " %s FILE brick 0|1\n", argv[0]);
+ fprintf(stderr, " %s FILE setchecksum 0|1\n", argv[0]);
err(errno = ECANCELED, "Too few arguments");
+ }
flags = (strcmp(COMMAND, "dump") == 0) ? O_RDONLY : flags;
filename = argv[1];
#ifdef __OpenBSD__