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/bf518f-ezbrd/bf518f-ezbrd.c

@@ -0,0 +1,162 @@
+/*
+ * U-Boot - main board file
+ *
+ * Copyright (c) 2008-2009 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <common.h>
+#include <config.h>
+#include <command.h>
+#include <net.h>
+#include <netdev.h>
+#include <spi.h>
+#include <asm/blackfin.h>
+#include <asm/portmux.h>
+#include <asm/mach-common/bits/otp.h>
+#include <asm/sdh.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkboard(void)
+{
+	printf("Board: ADI BF518F EZ-Board board\n");
+	printf("       Support: http://blackfin.uclinux.org/\n");
+	return 0;
+}
+
+#if defined(CONFIG_BFIN_MAC)
+static void board_init_enetaddr(uchar *mac_addr)
+{
+#ifndef CONFIG_SYS_NO_FLASH
+	/* we cram the MAC in the last flash sector */
+	uchar *board_mac_addr = (uchar *)0x203F0096;
+	if (is_valid_ethaddr(board_mac_addr)) {
+		memcpy(mac_addr, board_mac_addr, 6);
+		eth_setenv_enetaddr("ethaddr", mac_addr);
+	}
+#endif
+}
+
+/* Only the first run of boards had a KSZ switch */
+#if defined(CONFIG_BFIN_SPI) && __SILICON_REVISION__ == 0
+# define KSZ_POSSIBLE 1
+#else
+# define KSZ_POSSIBLE 0
+#endif
+
+#define KSZ_MAX_HZ    5000000
+
+#define KSZ_WRITE     0x02
+#define KSZ_READ      0x03
+
+#define KSZ_REG_CHID  0x00	/* Register 0: Chip ID0 */
+#define KSZ_REG_STPID 0x01	/* Register 1: Chip ID1 / Start Switch */
+#define KSZ_REG_GC9   0x0b	/* Register 11: Global Control 9 */
+#define KSZ_REG_P3C0  0x30	/* Register 48: Port 3 Control 0 */
+
+static int ksz8893m_transfer(struct spi_slave *slave, uchar dir, uchar reg,
+			     uchar data, uchar result[3])
+{
+	unsigned char dout[3] = { dir, reg, data, };
+	return spi_xfer(slave, sizeof(dout) * 8, dout, result, SPI_XFER_BEGIN | SPI_XFER_END);
+}
+
+static int ksz8893m_reg_set(struct spi_slave *slave, uchar reg, uchar data)
+{
+	unsigned char din[3];
+	return ksz8893m_transfer(slave, KSZ_WRITE, reg, data, din);
+}
+
+static int ksz8893m_reg_read(struct spi_slave *slave, uchar reg)
+{
+	int ret;
+	unsigned char din[3];
+	ret = ksz8893m_transfer(slave, KSZ_READ, reg, 0, din);
+	return ret ? ret : din[2];
+}
+
+static int ksz8893m_reg_clear(struct spi_slave *slave, uchar reg, uchar mask)
+{
+	return ksz8893m_reg_set(slave, reg, ksz8893m_reg_read(slave, reg) & mask);
+}
+
+static int ksz8893m_reset(struct spi_slave *slave)
+{
+	int ret = 0;
+
+	/* Disable STPID mode */
+	ret |= ksz8893m_reg_clear(slave, KSZ_REG_GC9, 0x01);
+
+	/* Disable VLAN tag insert on Port3 */
+	ret |= ksz8893m_reg_clear(slave, KSZ_REG_P3C0, 0x04);
+
+	/* Start switch */
+	ret |= ksz8893m_reg_set(slave, KSZ_REG_STPID, 0x01);
+
+	return ret;
+}
+
+static bool board_ksz_init(void)
+{
+	static bool switch_is_alive = false;
+
+	if (!switch_is_alive) {
+		struct spi_slave *slave = spi_setup_slave(0, 1, KSZ_MAX_HZ, SPI_MODE_3);
+		if (slave) {
+			if (!spi_claim_bus(slave)) {
+				bool phy_is_ksz = (ksz8893m_reg_read(slave, KSZ_REG_CHID) == 0x88);
+				int ret = phy_is_ksz ? ksz8893m_reset(slave) : 0;
+				switch_is_alive = (ret == 0);
+				spi_release_bus(slave);
+			}
+			spi_free_slave(slave);
+		}
+	}
+
+	return switch_is_alive;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	if (KSZ_POSSIBLE) {
+		if (!board_ksz_init())
+			return 0;
+	}
+	return bfin_EMAC_initialize(bis);
+}
+#endif
+
+int misc_init_r(void)
+{
+#ifdef CONFIG_BFIN_MAC
+	uchar enetaddr[6];
+	if (!eth_getenv_enetaddr("ethaddr", enetaddr))
+		board_init_enetaddr(enetaddr);
+#endif
+
+#ifndef CONFIG_SYS_NO_FLASH
+	/* we use the last sector for the MAC address / POST LDR */
+	extern flash_info_t flash_info[];
+	flash_protect(FLAG_PROTECT_SET, 0x203F0000, 0x203FFFFF, &flash_info[0]);
+#endif
+
+	return 0;
+}
+
+int board_early_init_f(void)
+{
+	/* connect async banks by default */
+	const unsigned short pins[] = {
+		P_AMS2, P_AMS3, 0,
+	};
+	return peripheral_request_list(pins, "async");
+}
+
+#ifdef CONFIG_BFIN_SDH
+int board_mmc_init(bd_t *bis)
+{
+	return bfin_mmc_init(bis);
+}
+#endif