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/pepper.h

@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2013 Gumstix, Inc. - http://www.gumstix.com/
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef __CONFIG_PEPPER_H
+#define __CONFIG_PEPPER_H
+
+#define CONFIG_MMC
+#include <configs/ti_am335x_common.h>
+
+#undef CONFIG_BOARD_LATE_INIT
+#undef CONFIG_SPL_OS_BOOT
+
+/* Clock defines */
+#define V_OSCK				24000000  /* Clock output from T2 */
+#define V_SCLK				(V_OSCK)
+
+#define CONFIG_SYS_I2C_EEPROM_ADDR	0x50
+
+/* Mach type */
+#define MACH_TYPE_PEPPER		4207	/* Until the next sync */
+#define CONFIG_MACH_TYPE		MACH_TYPE_PEPPER
+
+#define CONFIG_ENV_SIZE			(128 << 10)	/* 128 KiB */
+#define CONFIG_ENV_IS_NOWHERE
+/* Display cpuinfo */
+#define CONFIG_DISPLAY_CPUINFO
+
+#define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	DEFAULT_LINUX_BOOT_ENV \
+	"bootdir=/boot\0" \
+	"bootfile=zImage\0" \
+	"fdtfile=am335x-pepper.dtb\0" \
+	"console=ttyO0,115200n8\0" \
+	"optargs=\0" \
+	"mmcdev=0\0" \
+	"mmcroot=/dev/mmcblk0p2 rw\0" \
+	"mmcrootfstype=ext4 rootwait\0" \
+	"mmcargs=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"root=${mmcroot} " \
+		"rootfstype=${mmcrootfstype}\0" \
+	"bootenv=uEnv.txt\0" \
+	"loadbootenv=load mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \
+	"importbootenv=echo Importing environment from mmc ...; " \
+		"env import -t ${loadaddr} ${filesize}\0" \
+	"mmcload=load mmc ${mmcdev}:2 ${loadaddr} ${bootdir}/${bootfile}; " \
+		"load mmc ${mmcdev}:2 ${fdtaddr} ${bootdir}/${fdtfile}\0" \
+	"loaduimage=fatload mmc ${mmcdev}:1 ${loadaddr} uImage\0" \
+	"uimageboot=echo Booting from mmc${mmcdev} ...; " \
+		"run mmcargs; " \
+		"bootm ${loadaddr}\0" \
+	"mmcboot=echo Booting from mmc ...; " \
+		"run mmcargs; " \
+		"bootz ${loadaddr} - ${fdtaddr}\0" \
+	"ubiboot=echo Booting from nand (ubifs) ...; " \
+		"run ubiargs; run ubiload; " \
+		"bootz ${loadaddr} - ${fdtaddr}\0" \
+
+#define CONFIG_BOOTCOMMAND \
+	"mmc dev ${mmcdev}; if mmc rescan; then " \
+		"echo SD/MMC found on device ${mmcdev};" \
+		"if run loadbootenv; then " \
+			"echo Loaded environment from ${bootenv};" \
+			"run importbootenv;" \
+		"fi;" \
+		"if test -n $uenvcmd; then " \
+			"echo Running uenvcmd ...;" \
+			"run uenvcmd;" \
+		"fi;" \
+		"if run mmcload; then " \
+			"run mmcboot;" \
+		"fi;" \
+		"if run loaduimage; then " \
+			"run uimageboot;" \
+		"fi;" \
+	"fi;" \
+
+/* Serial console configuration */
+#define CONFIG_CONS_INDEX		1 /* UART0 */
+#define CONFIG_SERIAL1			1
+#define CONFIG_SYS_NS16550_COM1		0x44e09000
+
+/* Ethernet support */
+#define CONFIG_PHY_GIGE
+#define CONFIG_PHYLIB
+#define CONFIG_PHY_ADDR			0
+#define CONFIG_PHY_MICREL
+#define CONFIG_PHY_MICREL_KSZ9021
+#define CONFIG_PHY_RESET_DELAY 1000
+
+/* SPL */
+#define CONFIG_SPL_LDSCRIPT		"$(CPUDIR)/am33xx/u-boot-spl.lds"
+
+#endif /* __CONFIG_PEPPER_H */