Import U-Boot v2026.07 (unmodified upstream source, base for rtwo patches)

cmd/stackprot_test.c

@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *  Copyright 2021 Broadcom
+ */
+
+#include <command.h>
+#include <linux/string.h>
+
+static int do_test_stackprot_fail(struct cmd_tbl *cmdtp, int flag, int argc,
+				  char *const argv[])
+{
+	/*
+	 * In order to avoid having the compiler optimize away the stack smashing
+	 * we need to do a little something here.
+	 */
+	char a[128];
+
+	memset(a, 0xa5, 512);
+
+	printf("We have smashed our stack as this should not exceed 128: sizeof(a) = %zd\n",
+	       strlen(a));
+
+	return 0;
+}
+
+U_BOOT_CMD(stackprot_test, 1, 1, do_test_stackprot_fail,
+	   "test stack protector fail", "");