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Diffstat (limited to 'util/ec_parse_panicinfo.c')
-rw-r--r--util/ec_parse_panicinfo.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/util/ec_parse_panicinfo.c b/util/ec_parse_panicinfo.c
index a3fefcf7b5..3a2da4590a 100644
--- a/util/ec_parse_panicinfo.c
+++ b/util/ec_parse_panicinfo.c
@@ -22,6 +22,19 @@ int main(int argc, char *argv[])
BUILD_ASSERT(sizeof(pdata) > sizeof(struct panic_data)*2);
+ /*
+ * Provide a minimal help message.
+ */
+ if (argc > 1) {
+ printf("Usage: cat <PANIC_BLOB_PATH> | ec_parse_panicinfo\n");
+ printf("Print the plain text panic info from a raw EC panic "
+ "data blob.\n\n");
+ printf("Example:\n");
+ printf("ec_parse_panicinfo "
+ "</sys/kernel/debug/cros_ec/panicinfo\n");
+ return 1;
+ }
+
while (1) {
read = fread(&pdata[size], 1, sizeof(pdata)-size, stdin);
if (read < 0) {