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/board/bf533-stamp/bf533-stamp.c

@@ -0,0 +1,119 @@
+/*
+ * U-Boot - main board file
+ *
+ * Copyright (c) 2005-2008 Analog Devices Inc.
+ *
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <netdev.h>
+#include <asm/gpio.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkboard(void)
+{
+	printf("Board: ADI BF533 Stamp board\n");
+	printf("       Support: http://blackfin.uclinux.org/\n");
+	return 0;
+}
+
+/* PF0 and PF1 are used to switch between the ethernet and flash:
+ *         PF0  PF1
+ *  flash:  0    0
+ *  ether:  1    0
+ */
+void swap_to(int device_id)
+{
+	gpio_request(GPIO_PF0, "eth_flash_swap");
+	gpio_request(GPIO_PF1, "eth_flash_swap");
+	gpio_direction_output(GPIO_PF0, device_id == ETHERNET);
+	gpio_direction_output(GPIO_PF1, 0);
+	SSYNC();
+}
+
+#if defined(CONFIG_MISC_INIT_R)
+/* miscellaneous platform dependent initialisations */
+int misc_init_r(void)
+{
+#ifdef CONFIG_STAMP_CF
+	cf_ide_init();
+#endif
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_SHOW_BOOT_PROGRESS
+
+#define STATUS_LED_OFF 0
+#define STATUS_LED_ON  1
+
+static int gpio_setup;
+
+static void stamp_led_set(int LED1, int LED2, int LED3)
+{
+	if (!gpio_setup) {
+		gpio_request(GPIO_PF2, "boot_progress");
+		gpio_request(GPIO_PF3, "boot_progress");
+		gpio_request(GPIO_PF4, "boot_progress");
+		gpio_direction_output(GPIO_PF2, LED1);
+		gpio_direction_output(GPIO_PF3, LED2);
+		gpio_direction_output(GPIO_PF4, LED3);
+		gpio_setup = 1;
+	} else {
+		gpio_set_value(GPIO_PF2, LED1);
+		gpio_set_value(GPIO_PF3, LED2);
+		gpio_set_value(GPIO_PF4, LED3);
+	}
+}
+
+void show_boot_progress(int status)
+{
+	switch (status) {
+	case BOOTSTAGE_ID_CHECK_MAGIC:
+		stamp_led_set(STATUS_LED_OFF, STATUS_LED_OFF, STATUS_LED_ON);
+		break;
+	case BOOTSTAGE_ID_CHECK_HEADER:
+		stamp_led_set(STATUS_LED_OFF, STATUS_LED_ON, STATUS_LED_OFF);
+		break;
+	case BOOTSTAGE_ID_CHECK_CHECKSUM:
+		stamp_led_set(STATUS_LED_OFF, STATUS_LED_ON, STATUS_LED_ON);
+		break;
+	case BOOTSTAGE_ID_CHECK_ARCH:
+		stamp_led_set(STATUS_LED_ON, STATUS_LED_OFF, STATUS_LED_OFF);
+		break;
+	case BOOTSTAGE_ID_CHECK_IMAGETYPE:
+	case BOOTSTAGE_ID_DECOMP_IMAGE:
+		stamp_led_set(STATUS_LED_ON, STATUS_LED_OFF, STATUS_LED_ON);
+		break;
+	case BOOTSTAGE_ID_KERNEL_LOADED:
+	case BOOTSTAGE_ID_CHECK_BOOT_OS:
+		stamp_led_set(STATUS_LED_ON, STATUS_LED_ON, STATUS_LED_OFF);
+		break;
+	case BOOTSTAGE_ID_BOOT_OS_RETURNED:
+	case BOOTSTAGE_ID_RD_MAGIC:
+	case BOOTSTAGE_ID_RD_HDR_CHECKSUM:
+	case BOOTSTAGE_ID_RD_CHECKSUM:
+	case BOOTSTAGE_ID_RAMDISK:
+	case BOOTSTAGE_ID_NO_RAMDISK:
+	case BOOTSTAGE_ID_RUN_OS:
+		stamp_led_set(STATUS_LED_OFF, STATUS_LED_OFF, STATUS_LED_OFF);
+		break;
+	default:
+		stamp_led_set(STATUS_LED_ON, STATUS_LED_ON, STATUS_LED_ON);
+		break;
+	}
+}
+#endif
+
+#ifdef CONFIG_SMC91111
+int board_eth_init(bd_t *bis)
+{
+	return smc91111_initialize(0, CONFIG_SMC91111_BASE);
+}
+#endif