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/dm/led.c

@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <led.h>
+#include <asm/gpio.h>
+#include <dm/test.h>
+#include <test/ut.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Base test of the led uclass */
+static int dm_test_led_base(struct unit_test_state *uts)
+{
+	struct udevice *dev;
+
+	/* Get the top-level device */
+	ut_assertok(uclass_get_device(UCLASS_LED, 0, &dev));
+	ut_assertok(uclass_get_device(UCLASS_LED, 1, &dev));
+	ut_assertok(uclass_get_device(UCLASS_LED, 2, &dev));
+	ut_asserteq(-ENODEV, uclass_get_device(UCLASS_LED, 3, &dev));
+
+	return 0;
+}
+DM_TEST(dm_test_led_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test of the led uclass using the led_gpio driver */
+static int dm_test_led_gpio(struct unit_test_state *uts)
+{
+	const int offset = 1;
+	struct udevice *dev, *gpio;
+
+	/*
+	 * Check that we can manipulate an LED. LED 1 is connected to GPIO
+	 * bank gpio_a, offset 1.
+	 */
+	ut_assertok(uclass_get_device(UCLASS_LED, 1, &dev));
+	ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
+	ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
+	led_set_on(dev, 1);
+	ut_asserteq(1, sandbox_gpio_get_value(gpio, offset));
+	led_set_on(dev, 0);
+	ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
+
+	return 0;
+}
+DM_TEST(dm_test_led_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test obtaining an LED by label */
+static int dm_test_led_label(struct unit_test_state *uts)
+{
+	struct udevice *dev, *cmp;
+
+	ut_assertok(led_get_by_label("sandbox:red", &dev));
+	ut_asserteq(1, device_active(dev));
+	ut_assertok(uclass_get_device(UCLASS_LED, 1, &cmp));
+	ut_asserteq_ptr(dev, cmp);
+
+	ut_assertok(led_get_by_label("sandbox:green", &dev));
+	ut_asserteq(1, device_active(dev));
+	ut_assertok(uclass_get_device(UCLASS_LED, 2, &cmp));
+	ut_asserteq_ptr(dev, cmp);
+
+	ut_asserteq(-ENODEV, led_get_by_label("sandbox:blue", &dev));
+
+	return 0;
+}
+DM_TEST(dm_test_led_label, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);