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/arch/arm/include/asm/arch-rockchip/periph.h

@@ -0,0 +1,54 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#ifndef _ASM_ARCH_PERIPH_H
+#define _ASM_ARCH_PERIPH_H
+
+/*
+ * The peripherals supported by the hardware. This is used to specify clocks
+ * and pinctrl settings. Some SoCs will not support all of these, but it
+ * provides a common reference for common drivers to use.
+ */
+enum periph_id {
+	PERIPH_ID_PWM0,
+	PERIPH_ID_PWM1,
+	PERIPH_ID_PWM2,
+	PERIPH_ID_PWM3,
+	PERIPH_ID_PWM4,
+	PERIPH_ID_I2C0,
+	PERIPH_ID_I2C1,
+	PERIPH_ID_I2C2,
+	PERIPH_ID_I2C3,
+	PERIPH_ID_I2C4,
+	PERIPH_ID_I2C5,
+	PERIPH_ID_SPI0,
+	PERIPH_ID_SPI1,
+	PERIPH_ID_SPI2,
+	PERIPH_ID_UART0,
+	PERIPH_ID_UART1,
+	PERIPH_ID_UART2,
+	PERIPH_ID_UART3,
+	PERIPH_ID_UART4,
+	PERIPH_ID_LCDC0,
+	PERIPH_ID_LCDC1,
+	PERIPH_ID_SDMMC0,
+	PERIPH_ID_SDMMC1,
+	PERIPH_ID_SDMMC2,
+	PERIPH_ID_HDMI,
+
+	PERIPH_ID_COUNT,
+
+	/* Some aliases */
+	PERIPH_ID_EMMC = PERIPH_ID_SDMMC0,
+	PERIPH_ID_SDCARD = PERIPH_ID_SDMMC1,
+	PERIPH_ID_UART_BT = PERIPH_ID_UART0,
+	PERIPH_ID_UART_BB = PERIPH_ID_UART1,
+	PERIPH_ID_UART_DBG = PERIPH_ID_UART2,
+	PERIPH_ID_UART_GPS = PERIPH_ID_UART3,
+	PERIPH_ID_UART_EXP = PERIPH_ID_UART4,
+};
+
+#endif