1 files changed, 43 insertions, 0 deletions
diff --git a/payloads/linuxcheck/linuxcheck.c b/payloads/linuxcheck/linuxcheck.c
new file mode 100644
index 000000000000..516df45b84d8
--- /dev/null
+++ b/payloads/linuxcheck/linuxcheck.c
@@ -0,0 +1,43 @@
+/*
+ * This file is part of the coreinfo project.
+ *
+ * Copyright (C) 2018 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <libpayload-config.h>
+#include <libpayload.h>
+
+extern struct console_output_driver *console_out;
+extern struct sysinfo_t lib_sysinfo;
+static void buts(char *s)
+{
+	int i;
+	for (i = 0; i < strlen(s); i++)
+		outb(s[i], 0x3f8);
+}
+int main(void)
+{
+	buts("Greetings from linuxcheck, via hard-coded calls to serial functions.\n");
+	if (console_out == NULL)
+		buts("Bad news: console_out is NULL\n");
+	if (lib_sysinfo.serial == NULL)
+		buts("Bad news: lib_sysinfo.serial is NULL. Very little will work well.\n");
+	buts("The next line should be puts works\n");
+	puts("puts works\n");
+	buts("If you did not see puts works, then you have a console issues\n");
+	buts("The next line should be 'printf works'\n");
+	printf("printf works\n");
+	buts(" ... if you did not see printf works, then you have a printf issue\n");
+	buts("Now we will halt. Bye");
+	halt();
+	return 0;
+}