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/zyxel/nsa310s/nsa310s.c

@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2015
+ * Gerald Kerma <dreagle@doukki.net>
+ * Tony Dinh <mibodhi@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <miiphy.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/soc.h>
+#include <asm/arch/mpp.h>
+#include <asm/io.h>
+#include "nsa310s.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_early_init_f(void)
+{
+	/*
+	 * default gpio configuration
+	 * There are maximum 64 gpios controlled through 2 sets of registers
+	 * the below configuration configures mainly initial LED status
+	 */
+	mvebu_config_gpio(NSA310S_VAL_LOW, NSA310S_VAL_HIGH,
+			  NSA310S_OE_LOW, NSA310S_OE_HIGH);
+
+	/* (all LEDs & power off active high) */
+	/* Multi-Purpose Pins Functionality configuration */
+	static const u32 kwmpp_config[] = {
+		MPP0_NF_IO2,
+		MPP1_NF_IO3,
+		MPP2_NF_IO4,
+		MPP3_NF_IO5,
+		MPP4_NF_IO6,
+		MPP5_NF_IO7,
+		MPP6_SYSRST_OUTn,
+		MPP7_GPO,
+		MPP8_TW_SDA,
+		MPP9_TW_SCK,
+		MPP10_UART0_TXD,
+		MPP11_UART0_RXD,
+		MPP12_GPO,
+		MPP13_GPIO,
+		MPP14_GPIO,
+		MPP15_GPIO,
+		MPP16_GPIO,
+		MPP17_GPIO,
+		MPP18_NF_IO0,
+		MPP19_NF_IO1,
+		MPP20_GPIO,
+		MPP21_GPIO,
+		MPP22_GPIO,
+		MPP23_GPIO,
+		MPP24_GPIO,
+		MPP25_GPIO,
+		MPP26_GPIO,
+		MPP27_GPIO,
+		MPP28_GPIO,
+		MPP29_GPIO,
+		MPP30_GPIO,
+		MPP31_GPIO,
+		MPP32_GPIO,
+		MPP33_GPIO,
+		MPP34_GPIO,
+		MPP35_GPIO,
+		0
+	};
+	kirkwood_mpp_conf(kwmpp_config, NULL);
+	return 0;
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
+
+	return 0;
+}
+
+#ifdef CONFIG_RESET_PHY_R
+void reset_phy(void)
+{
+	u16 reg;
+	u16 phyaddr;
+	char *name = "egiga0";
+
+	if (miiphy_set_current_dev(name))
+		return;
+
+	/* read PHY dev address */
+	if (miiphy_read(name, 0xee, 0xee, (u16 *) &phyaddr)) {
+		printf("could not read PHY dev address\n");
+		return;
+	}
+
+	/* set RGMII delay */
+	miiphy_write(name, phyaddr, MV88E1318_PGADR_REG, MV88E1318_MAC_CTRL_PG);
+	miiphy_read(name, phyaddr, MV88E1318_MAC_CTRL_REG, &reg);
+	reg |= (MV88E1318_RGMII_RX_CTRL | MV88E1318_RGMII_TX_CTRL);
+	miiphy_write(name, phyaddr, MV88E1318_MAC_CTRL_REG, reg);
+	miiphy_write(name, phyaddr, MV88E1318_PGADR_REG, 0);
+
+	/* reset PHY */
+	if (miiphy_reset(name, phyaddr))
+		return;
+
+	/*
+	 * ZyXEL NSA310S uses the 88E1310S Alaska (interface identical to 88E1318)
+	 * and has an MCU attached to the LED[2] via tristate interrupt
+	 */
+
+	/* switch to LED register page */
+	miiphy_write(name, phyaddr, MV88E1318_PGADR_REG, MV88E1318_LED_PG);
+	/* read out LED polarity register */
+	miiphy_read(name, phyaddr, MV88E1318_LED_POL_REG, &reg);
+	/* clear 4, set 5 - LED2 low, tri-state */
+	reg &= ~(MV88E1318_LED2_4);
+	reg |= (MV88E1318_LED2_5);
+	/* write back LED polarity register */
+	miiphy_write(name, phyaddr, MV88E1318_LED_POL_REG, reg);
+	/* jump back to page 0, per the PHY chip documenation. */
+	miiphy_write(name, phyaddr, MV88E1318_PGADR_REG, 0);
+
+	/* set PHY back to auto-negotiation mode */
+	miiphy_write(name, phyaddr, 0x4, 0x1e1);
+	miiphy_write(name, phyaddr, 0x9, 0x300);
+	/* downshift */
+	miiphy_write(name, phyaddr, 0x10, 0x3860);
+	miiphy_write(name, phyaddr, 0x0, 0x9140);
+}
+#endif /* CONFIG_RESET_PHY_R */