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/compulab/cm_t3517/cm_t3517.c

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+/*
+ * (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il>
+ *
+ * Authors: Igor Grinberg <grinberg@compulab.co.il>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <status_led.h>
+#include <net.h>
+#include <netdev.h>
+#include <usb.h>
+#include <mmc.h>
+#include <linux/compiler.h>
+#include <linux/usb/musb.h>
+
+#include <asm/io.h>
+#include <asm/arch/mem.h>
+#include <asm/arch/am35x_def.h>
+#include <asm/arch/mmc_host_def.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/musb.h>
+#include <asm/omap_musb.h>
+#include <asm/ehci-omap.h>
+
+#include "../common/common.h"
+#include "../common/eeprom.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+const omap3_sysinfo sysinfo = {
+	DDR_DISCRETE,
+	"CM-T3517 board",
+	"NAND 128/512M",
+};
+
+#ifdef CONFIG_USB_MUSB_AM35X
+static struct musb_hdrc_config cm_t3517_musb_config = {
+	.multipoint     = 1,
+	.dyn_fifo       = 1,
+	.num_eps        = 16,
+	.ram_bits       = 12,
+};
+
+static struct omap_musb_board_data cm_t3517_musb_board_data = {
+	.set_phy_power		= am35x_musb_phy_power,
+	.clear_irq		= am35x_musb_clear_irq,
+	.reset			= am35x_musb_reset,
+};
+
+static struct musb_hdrc_platform_data cm_t3517_musb_pdata = {
+#if defined(CONFIG_USB_MUSB_HOST)
+	.mode           = MUSB_HOST,
+#elif defined(CONFIG_USB_MUSB_GADGET)
+	.mode		= MUSB_PERIPHERAL,
+#else
+#error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET"
+#endif
+	.config         = &cm_t3517_musb_config,
+	.power          = 250,
+	.platform_ops	= &am35x_ops,
+	.board_data	= &cm_t3517_musb_board_data,
+};
+
+static void cm_t3517_musb_init(void)
+{
+	/*
+	 * Set up USB clock/mode in the DEVCONF2 register.
+	 * USB2.0 PHY reference clock is 13 MHz
+	 */
+	clrsetbits_le32(&am35x_scm_general_regs->devconf2,
+			CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE,
+			CONF2_REFFREQ_13MHZ | CONF2_SESENDEN |
+			CONF2_VBDTCTEN | CONF2_DATPOL);
+
+	if (musb_register(&cm_t3517_musb_pdata, &cm_t3517_musb_board_data,
+			  (void *)AM35XX_IPSS_USBOTGSS_BASE))
+		printf("Failed initializing AM35x MUSB!\n");
+}
+#else
+static inline void am3517_evm_musb_init(void) {}
+#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);
+
+#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
+	status_led_set(STATUS_LED_BOOT, STATUS_LED_ON);
+#endif
+
+	cm_t3517_musb_init();
+
+	return 0;
+}
+
+/*
+ * Routine: get_board_rev
+ * Description: read system revision
+ */
+u32 get_board_rev(void)
+{
+	return cl_eeprom_get_board_rev(CONFIG_SYS_I2C_EEPROM_BUS);
+};
+
+int misc_init_r(void)
+{
+	cl_print_pcb_info();
+	omap_die_id_display();
+
+	return 0;
+}
+
+#if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
+#define SB_T35_CD_GPIO 144
+#define SB_T35_WP_GPIO 59
+
+int board_mmc_init(bd_t *bis)
+{
+	return omap_mmc_init(0, 0, 0, SB_T35_CD_GPIO, SB_T35_WP_GPIO);
+}
+#endif
+
+#ifdef CONFIG_DRIVER_TI_EMAC
+#define CONTROL_EFUSE_EMAC_LSB  0x48002380
+#define CONTROL_EFUSE_EMAC_MSB  0x48002384
+
+static int am3517_get_efuse_enetaddr(u8 *enetaddr)
+{
+	u32 lsb = __raw_readl(CONTROL_EFUSE_EMAC_LSB);
+	u32 msb = __raw_readl(CONTROL_EFUSE_EMAC_MSB);
+
+	enetaddr[0] = (u8)((msb >> 16) & 0xff);
+	enetaddr[1] = (u8)((msb >> 8)  & 0xff);
+	enetaddr[2] = (u8)(msb & 0xff);
+	enetaddr[3] = (u8)((lsb >> 16) & 0xff);
+	enetaddr[4] = (u8)((lsb >> 8)  & 0xff);
+	enetaddr[5] = (u8)(lsb & 0xff);
+
+	return is_valid_ethaddr(enetaddr);
+}
+
+static inline int cm_t3517_init_emac(bd_t *bis)
+{
+	int ret = cpu_eth_init(bis);
+
+	if (ret > 0)
+		return ret;
+
+	printf("Failed initializing EMAC! ");
+	return 0;
+}
+#else /* !CONFIG_DRIVER_TI_EMAC */
+static inline int am3517_get_efuse_enetaddr(u8 *enetaddr) { return 1; }
+static inline int cm_t3517_init_emac(bd_t *bis) { return 0; }
+#endif /* CONFIG_DRIVER_TI_EMAC */
+
+/*
+ * Routine: handle_mac_address
+ * Description: prepare MAC address for on-board Ethernet.
+ */
+static int cm_t3517_handle_mac_address(void)
+{
+	unsigned char enetaddr[6];
+	int ret;
+
+	ret = eth_getenv_enetaddr("ethaddr", enetaddr);
+	if (ret)
+		return 0;
+
+	ret = cl_eeprom_read_mac_addr(enetaddr, CONFIG_SYS_I2C_EEPROM_BUS);
+	if (ret) {
+		ret = am3517_get_efuse_enetaddr(enetaddr);
+		if (ret)
+			return ret;
+	}
+
+	if (!is_valid_ethaddr(enetaddr))
+		return -1;
+
+	return eth_setenv_enetaddr("ethaddr", enetaddr);
+}
+
+#define SB_T35_ETH_RST_GPIO 164
+
+/*
+ * Routine: board_eth_init
+ * Description: initialize module and base-board Ethernet chips
+ */
+int board_eth_init(bd_t *bis)
+{
+	int rc = 0, rc1 = 0;
+
+	rc1 = cm_t3517_handle_mac_address();
+	if (rc1)
+		printf("No MAC address found! ");
+
+	rc1 = cm_t3517_init_emac(bis);
+	if (rc1 > 0)
+		rc++;
+
+	rc1 = cl_omap3_smc911x_init(0, 4, CONFIG_SMC911X_BASE,
+				    NULL, SB_T35_ETH_RST_GPIO);
+	if (rc1 > 0)
+		rc++;
+
+	return rc;
+}
+
+#ifdef CONFIG_USB_EHCI_OMAP
+static struct omap_usbhs_board_data cm_t3517_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,
+};
+
+#define CM_T3517_USB_HUB_RESET_GPIO	152
+#define SB_T35_USB_HUB_RESET_GPIO	98
+
+int ehci_hcd_init(int index, enum usb_init_type init,
+			struct ehci_hccr **hccr, struct ehci_hcor **hcor)
+{
+	cl_usb_hub_init(CM_T3517_USB_HUB_RESET_GPIO, "cm-t3517 hub rst");
+	cl_usb_hub_init(SB_T35_USB_HUB_RESET_GPIO, "sb-t35 hub rst");
+
+	return omap_ehci_hcd_init(index, &cm_t3517_usbhs_bdata, hccr, hcor);
+}
+
+int ehci_hcd_stop(void)
+{
+	cl_usb_hub_deinit(CM_T3517_USB_HUB_RESET_GPIO);
+	cl_usb_hub_deinit(SB_T35_USB_HUB_RESET_GPIO);
+
+	return omap_ehci_hcd_stop();
+}
+#endif /* CONFIG_USB_EHCI_OMAP */