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/include/configs/bg0900.h

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2013 Marek Vasut <marex@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#ifndef __CONFIGS_BG0900_H__
+#define __CONFIGS_BG0900_H__
+
+/* System configurations */
+#define CONFIG_MX28				/* i.MX28 SoC */
+
+/* U-Boot Commands */
+#define CONFIG_SYS_NO_FLASH
+#define CONFIG_DISPLAY_CPUINFO
+#define CONFIG_DOS_PARTITION
+
+#define CONFIG_CMD_NAND
+#define CONFIG_CMD_NAND_TRIMFFS
+
+/* Memory configuration */
+#define CONFIG_NR_DRAM_BANKS		1		/* 1 bank of DRAM */
+#define PHYS_SDRAM_1			0x40000000	/* Base address */
+#define PHYS_SDRAM_1_SIZE		0x10000000	/* Max 256 MB RAM */
+#define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
+
+/* Environment */
+#define CONFIG_ENV_SIZE			(16 * 1024)
+#define CONFIG_ENV_OVERWRITE
+#define CONFIG_ENV_IS_NOWHERE
+
+/* FEC Ethernet on SoC */
+#ifdef	CONFIG_CMD_NET
+#define CONFIG_FEC_MXC
+#endif
+
+/* SPI */
+#ifdef CONFIG_CMD_SPI
+#define CONFIG_DEFAULT_SPI_BUS		2
+#define CONFIG_DEFAULT_SPI_CS		0
+#define CONFIG_DEFAULT_SPI_MODE		SPI_MODE_0
+
+/* SPI FLASH */
+#ifdef CONFIG_CMD_SF
+#define CONFIG_SF_DEFAULT_BUS		2
+#define CONFIG_SF_DEFAULT_CS		0
+#define CONFIG_SF_DEFAULT_SPEED		40000000
+#define CONFIG_SF_DEFAULT_MODE		SPI_MODE_0
+
+#define CONFIG_ENV_SPI_BUS		2
+#define CONFIG_ENV_SPI_CS		0
+#define CONFIG_ENV_SPI_MAX_HZ		40000000
+#define CONFIG_ENV_SPI_MODE		SPI_MODE_0
+#endif
+
+#endif
+
+/* Boot Linux */
+#define CONFIG_BOOTFILE		"uImage"
+#define CONFIG_BOOTARGS		"console=ttyAMA0,115200"
+#define CONFIG_BOOTCOMMAND	"bootm"
+#define CONFIG_LOADADDR		0x42000000
+#define CONFIG_SYS_LOAD_ADDR	CONFIG_LOADADDR
+
+/* Extra Environment */
+#define CONFIG_EXTRA_ENV_SETTINGS					\
+	"update_spi_firmware_filename=u-boot.sb\0"			\
+	"update_spi_firmware_maxsz=0x80000\0"				\
+	"update_spi_firmware="	/* Update the SPI flash firmware */	\
+		"if sf probe 2:0 ; then "				\
+		"if tftp ${update_spi_firmware_filename} ; then "	\
+		"sf erase 0x0 +${filesize} ; "				\
+		"sf write ${loadaddr} 0x0 ${filesize} ; "		\
+		"fi ; "							\
+		"fi\0"
+
+/* The rest of the configuration is shared */
+#include <configs/mxs.h>
+
+#endif /* __CONFIGS_BG0900_H__ */