avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/test/command_ut.c

@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2012, The Chromium Authors
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#define DEBUG
+
+#include <common.h>
+
+static const char test_cmd[] = "setenv list 1\n setenv list ${list}2; "
+		"setenv list ${list}3\0"
+		"setenv list ${list}4";
+
+static int do_ut_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	printf("%s: Testing commands\n", __func__);
+	run_command("env default -f -a", 0);
+
+	/* commands separated by \n */
+	run_command_list("setenv list 1\n setenv list ${list}1", -1, 0);
+	assert(!strcmp("11", getenv("list")));
+
+	/* command followed by \n and nothing else */
+	run_command_list("setenv list 1${list}\n", -1, 0);
+	assert(!strcmp("111", getenv("list")));
+
+	/* a command string with \0 in it. Stuff after \0 should be ignored */
+	run_command("setenv list", 0);
+	run_command_list(test_cmd, sizeof(test_cmd), 0);
+	assert(!strcmp("123", getenv("list")));
+
+	/*
+	 * a command list where we limit execution to only the first command
+	 * using the length parameter.
+	 */
+	run_command_list("setenv list 1\n setenv list ${list}2; "
+		"setenv list ${list}3", strlen("setenv list 1"), 0);
+	assert(!strcmp("1", getenv("list")));
+
+	assert(run_command("false", 0) == 1);
+	assert(run_command("echo", 0) == 0);
+	assert(run_command_list("false", -1, 0) == 1);
+	assert(run_command_list("echo", -1, 0) == 0);
+
+#ifdef CONFIG_HUSH_PARSER
+	run_command("setenv foo 'setenv black 1\nsetenv adder 2'", 0);
+	run_command("run foo", 0);
+	assert(getenv("black") != NULL);
+	assert(!strcmp("1", getenv("black")));
+	assert(getenv("adder") != NULL);
+	assert(!strcmp("2", getenv("adder")));
+#endif
+
+	assert(run_command("", 0) == 0);
+	assert(run_command(" ", 0) == 0);
+
+	assert(run_command("'", 0) == 1);
+
+	printf("%s: Everything went swimmingly\n", __func__);
+	return 0;
+}
+
+U_BOOT_CMD(
+	ut_cmd,	5,	1,	do_ut_cmd,
+	"Very basic test of command parsers",
+	""
+);