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/samsung/common/exynos5-dt.c

@@ -0,0 +1,217 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dwc3-uboot.h>
+#include <fdtdec.h>
+#include <asm/io.h>
+#include <errno.h>
+#include <i2c.h>
+#include <mmc.h>
+#include <netdev.h>
+#include <samsung-usb-phy-uboot.h>
+#include <spi.h>
+#include <usb.h>
+#include <video_bridge.h>
+#include <asm/gpio.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/dwmmc.h>
+#include <asm/arch/mmc.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/power.h>
+#include <asm/arch/sromc.h>
+#include <power/pmic.h>
+#include <power/max77686_pmic.h>
+#include <power/regulator.h>
+#include <power/s2mps11.h>
+#include <power/s5m8767.h>
+#include <samsung/exynos5-dt-types.h>
+#include <samsung/misc.h>
+#include <tmu.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void board_enable_audio_codec(void)
+{
+	int node, ret;
+	struct gpio_desc en_gpio;
+
+	node = fdtdec_next_compatible(gd->fdt_blob, 0,
+		COMPAT_SAMSUNG_EXYNOS5_SOUND);
+	if (node <= 0)
+		return;
+
+	ret = gpio_request_by_name_nodev(gd->fdt_blob, node,
+					 "codec-enable-gpio", 0, &en_gpio,
+					 GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
+	if (ret == -FDT_ERR_NOTFOUND)
+		return;
+
+	/* Turn on the GPIO which connects to the codec's "enable" line. */
+	gpio_set_pull(gpio_get_number(&en_gpio), S5P_GPIO_PULL_NONE);
+
+#ifdef CONFIG_SOUND_MAX98095
+	/* Enable MAX98095 Codec */
+	gpio_request(EXYNOS5_GPIO_X17, "max98095_enable");
+	gpio_direction_output(EXYNOS5_GPIO_X17, 1);
+	gpio_set_pull(EXYNOS5_GPIO_X17, S5P_GPIO_PULL_NONE);
+#endif
+}
+
+int exynos_init(void)
+{
+	board_enable_audio_codec();
+
+	return 0;
+}
+
+static int exynos_set_regulator(const char *name, uint uv)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = regulator_get_by_platname(name, &dev);
+	if (ret) {
+		debug("%s: Cannot find regulator %s\n", __func__, name);
+		return ret;
+	}
+	ret = regulator_set_value(dev, uv);
+	if (ret) {
+		debug("%s: Cannot set regulator %s\n", __func__, name);
+		return ret;
+	}
+
+	return 0;
+}
+
+int exynos_power_init(void)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = pmic_get("max77686", &dev);
+	if (!ret) {
+		/* TODO(sjg@chromium.org): Move into the clock/pmic API */
+		ret = pmic_clrsetbits(dev, MAX77686_REG_PMIC_32KHZ, 0,
+				MAX77686_32KHCP_EN);
+		if (ret)
+			return ret;
+		ret = pmic_clrsetbits(dev, MAX77686_REG_PMIC_BBAT, 0,
+				MAX77686_BBCHOSTEN | MAX77686_BBCVS_3_5V);
+		if (ret)
+			return ret;
+	} else {
+		ret = pmic_get("s5m8767-pmic", &dev);
+		/* TODO(sjg@chromium.org): Use driver model to access clock */
+#ifdef CONFIG_PMIC_S5M8767
+		if (!ret)
+			s5m8767_enable_32khz_cp(dev);
+#endif
+	}
+	if (ret == -ENODEV)
+		return 0;
+
+	ret = regulators_enable_boot_on(false);
+	if (ret)
+		return ret;
+
+	ret = exynos_set_regulator("vdd_mif", 1100000);
+	if (ret)
+		return ret;
+
+	/*
+	 * This would normally be 1.3V, but since we are running slowly 1.1V
+	 * is enough. For spring it helps reduce CPU temperature and avoid
+	 * hangs with the case open. 1.1V is minimum voltage borderline for
+	 * chained bootloaders.
+	 */
+	ret = exynos_set_regulator("vdd_arm", 1100000);
+	if (ret)
+		return ret;
+	ret = exynos_set_regulator("vdd_int", 1012500);
+	if (ret)
+		return ret;
+	ret = exynos_set_regulator("vdd_g3d", 1200000);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+int board_get_revision(void)
+{
+	return 0;
+}
+
+#ifdef CONFIG_USB_DWC3
+static struct dwc3_device dwc3_device_data = {
+	.maximum_speed = USB_SPEED_SUPER,
+	.base = 0x12400000,
+	.dr_mode = USB_DR_MODE_PERIPHERAL,
+	.index = 0,
+};
+
+int usb_gadget_handle_interrupts(void)
+{
+	dwc3_uboot_handle_interrupt(0);
+	return 0;
+}
+
+int board_usb_init(int index, enum usb_init_type init)
+{
+	struct exynos_usb3_phy *phy = (struct exynos_usb3_phy *)
+		samsung_get_base_usb3_phy();
+
+	if (!phy) {
+		error("usb3 phy not supported");
+		return -ENODEV;
+	}
+
+	set_usbdrd_phy_ctrl(POWER_USB_DRD_PHY_CTRL_EN);
+	exynos5_usb3_phy_init(phy);
+
+	return dwc3_uboot_init(&dwc3_device_data);
+}
+#endif
+#ifdef CONFIG_SET_DFU_ALT_INFO
+char *get_dfu_alt_system(char *interface, char *devstr)
+{
+	char *info = "Not supported!";
+
+	if (board_is_odroidxu4())
+		return info;
+
+	return getenv("dfu_alt_system");
+}
+
+char *get_dfu_alt_boot(char *interface, char *devstr)
+{
+	char *info = "Not supported!";
+	struct mmc *mmc;
+	char *alt_boot;
+	int dev_num;
+
+	if (board_is_odroidxu4())
+		return info;
+
+	dev_num = simple_strtoul(devstr, NULL, 10);
+
+	mmc = find_mmc_device(dev_num);
+	if (!mmc)
+		return NULL;
+
+	if (mmc_init(mmc))
+		return NULL;
+
+	if (IS_SD(mmc))
+		alt_boot = CONFIG_DFU_ALT_BOOT_SD;
+	else
+		alt_boot = CONFIG_DFU_ALT_BOOT_EMMC;
+
+	return alt_boot;
+}
+#endif