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/technexion/twister/twister.c

@@ -0,0 +1,162 @@
+/*
+ * Copyright (C) 2011
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
+ *
+ * Copyright (C) 2009 TechNexion Ltd.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <netdev.h>
+#include <asm/io.h>
+#include <asm/arch/mem.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/omap_gpio.h>
+#include <asm/arch/mmc_host_def.h>
+#include <i2c.h>
+#include <spl.h>
+#include <mmc.h>
+#include <asm/gpio.h>
+#ifdef CONFIG_USB_EHCI
+#include <usb.h>
+#include <asm/ehci-omap.h>
+#endif
+#include "twister.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Timing definitions for Ethernet Controller */
+static const u32 gpmc_smc911[] = {
+	NET_GPMC_CONFIG1,
+	NET_GPMC_CONFIG2,
+	NET_GPMC_CONFIG3,
+	NET_GPMC_CONFIG4,
+	NET_GPMC_CONFIG5,
+	NET_GPMC_CONFIG6,
+};
+
+static const u32 gpmc_XR16L2751[] = {
+	XR16L2751_GPMC_CONFIG1,
+	XR16L2751_GPMC_CONFIG2,
+	XR16L2751_GPMC_CONFIG3,
+	XR16L2751_GPMC_CONFIG4,
+	XR16L2751_GPMC_CONFIG5,
+	XR16L2751_GPMC_CONFIG6,
+};
+
+#ifdef CONFIG_USB_EHCI
+static struct omap_usbhs_board_data usbhs_bdata = {
+	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
+	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
+	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
+};
+
+int ehci_hcd_init(int index, enum usb_init_type init,
+		struct ehci_hccr **hccr, struct ehci_hcor **hcor)
+{
+	return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
+}
+
+int ehci_hcd_stop(int index)
+{
+	return omap_ehci_hcd_stop();
+}
+#endif
+
+int board_init(void)
+{
+	gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
+
+	/* boot param addr */
+	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
+
+	/* Chip select 1  and 3 are used for XR16L2751 UART controller */
+	enable_gpmc_cs_config(gpmc_XR16L2751, &gpmc_cfg->cs[1],
+		XR16L2751_UART1_BASE, GPMC_SIZE_16M);
+
+	enable_gpmc_cs_config(gpmc_XR16L2751, &gpmc_cfg->cs[3],
+		XR16L2751_UART2_BASE, GPMC_SIZE_16M);
+
+	gpio_request(CONFIG_OMAP_EHCI_PHY1_RESET_GPIO, "USB_PHY1_RESET");
+	gpio_direction_output(CONFIG_OMAP_EHCI_PHY1_RESET_GPIO, 1);
+
+	return 0;
+}
+
+#ifndef CONFIG_SPL_BUILD
+int misc_init_r(void)
+{
+	char *eth_addr;
+	struct tam3517_module_info info;
+	int ret;
+
+	omap_die_id_display();
+
+	eth_addr = getenv("ethaddr");
+	if (eth_addr)
+		return 0;
+
+	TAM3517_READ_EEPROM(&info, ret);
+	if (!ret)
+		TAM3517_READ_MAC_FROM_EEPROM(&info);
+
+	return 0;
+}
+#endif
+
+/*
+ * Routine: set_muxconf_regs
+ * Description: Setting up the configuration Mux registers specific to the
+ *		hardware. Many pins need to be moved from protect to primary
+ *		mode.
+ */
+void set_muxconf_regs(void)
+{
+	MUX_TWISTER();
+}
+
+int board_eth_init(bd_t *bis)
+{
+	davinci_emac_initialize();
+
+	/* init cs for extern lan */
+	enable_gpmc_cs_config(gpmc_smc911, &gpmc_cfg->cs[5],
+		CONFIG_SMC911X_BASE, GPMC_SIZE_16M);
+	if (smc911x_initialize(0, CONFIG_SMC911X_BASE) <= 0)
+		printf("\nError initializing SMC911x controlleri\n");
+
+	return 0;
+}
+
+#if defined(CONFIG_OMAP_HSMMC) && \
+	!defined(CONFIG_SPL_BUILD)
+int board_mmc_init(bd_t *bis)
+{
+	return omap_mmc_init(0, 0, 0, -1, -1);
+}
+#endif
+
+#ifdef CONFIG_SPL_OS_BOOT
+/*
+ * Do board specific preperation before SPL
+ * Linux boot
+ */
+void spl_board_prepare_for_linux(void)
+{
+	/* init cs for extern lan */
+	enable_gpmc_cs_config(gpmc_smc911, &gpmc_cfg->cs[5],
+		CONFIG_SMC911X_BASE, GPMC_SIZE_16M);
+}
+int spl_start_uboot(void)
+{
+	int val = 0;
+	if (!gpio_request(SPL_OS_BOOT_KEY, "U-Boot key")) {
+		gpio_direction_input(SPL_OS_BOOT_KEY);
+		val = gpio_get_value(SPL_OS_BOOT_KEY);
+		gpio_free(SPL_OS_BOOT_KEY);
+	}
+	return val;
+}
+#endif