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/arndale/Kconfig

@@ -0,0 +1,12 @@
+if TARGET_ARNDALE
+
+config SYS_BOARD
+	default "arndale"
+
+config SYS_VENDOR
+	default "samsung"
+
+config SYS_CONFIG_NAME
+	default "arndale"
+
+endif

u-boot/board/samsung/arndale/MAINTAINERS

@@ -0,0 +1,6 @@
+ARNDALE BOARD
+M:	Chander Kashyap <k.chander@samsung.com>
+S:	Maintained
+F:	board/samsung/arndale/
+F:	include/configs/arndale.h
+F:	configs/arndale_defconfig

u-boot/board/samsung/arndale/Makefile

@@ -0,0 +1,11 @@
+#
+# Copyright (C) 2013 Samsung Electronics
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	+= arndale_spl.o
+
+ifndef CONFIG_SPL_BUILD
+obj-y	+= arndale.o
+endif

u-boot/board/samsung/arndale/arndale.c

@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2013 Samsung Electronics
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <usb.h>
+#include <asm/gpio.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/dwmmc.h>
+#include <asm/arch/power.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_USB_EHCI_EXYNOS
+int board_usb_init(int index, enum usb_init_type init)
+{
+	/* Configure gpios for usb 3503 hub:
+	 * disconnect, toggle reset and connect
+	 */
+	gpio_request(EXYNOS5_GPIO_D17, "usb_connect");
+	gpio_request(EXYNOS5_GPIO_X35, "usb_reset");
+	gpio_direction_output(EXYNOS5_GPIO_D17, 0);
+	gpio_direction_output(EXYNOS5_GPIO_X35, 0);
+
+	gpio_direction_output(EXYNOS5_GPIO_X35, 1);
+	gpio_direction_output(EXYNOS5_GPIO_D17, 1);
+
+	return 0;
+}
+#endif
+
+int board_init(void)
+{
+	gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL);
+	return 0;
+}
+
+int dram_init(void)
+{
+	int i;
+	u32 addr;
+
+	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+		addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
+		gd->ram_size += get_ram_size((long *)addr, SDRAM_BANK_SIZE);
+	}
+	return 0;
+}
+
+int power_init_board(void)
+{
+	set_ps_hold_ctrl();
+	return 0;
+}
+
+void dram_init_banksize(void)
+{
+	int i;
+	u32 addr, size;
+
+	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+		addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
+		size = get_ram_size((long *)addr, SDRAM_BANK_SIZE);
+
+		gd->bd->bi_dram[i].start = addr;
+		gd->bd->bi_dram[i].size = size;
+	}
+}
+
+#ifdef CONFIG_GENERIC_MMC
+int board_mmc_init(bd_t *bis)
+{
+	int ret;
+	/* dwmmc initializattion for available channels */
+	ret = exynos_dwmmc_init(gd->fdt_blob);
+	if (ret)
+		debug("dwmmc init failed\n");
+
+	return ret;
+}
+#endif
+
+static int board_uart_init(void)
+{
+	int err = 0, uart_id;
+
+	for (uart_id = PERIPH_ID_UART0; uart_id <= PERIPH_ID_UART3; uart_id++) {
+		err = exynos_pinmux_config(uart_id, PINMUX_FLAG_NONE);
+		if (err) {
+			debug("UART%d not configured\n",
+			      (uart_id - PERIPH_ID_UART0));
+			return err;
+		}
+	}
+	return err;
+}
+
+#ifdef CONFIG_BOARD_EARLY_INIT_F
+int board_early_init_f(void)
+{
+	int err;
+
+	err = board_uart_init();
+	if (err) {
+		debug("UART init failed\n");
+		return err;
+	}
+	return err;
+}
+#endif
+
+#ifdef CONFIG_DISPLAY_BOARDINFO
+int checkboard(void)
+{
+	printf("\nBoard: Arndale\n");
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_S5P_PA_SYSRAM
+void smp_set_core_boot_addr(unsigned long addr, int corenr)
+{
+	writel(addr, CONFIG_S5P_PA_SYSRAM);
+
+	/* make sure this write is really executed */
+	__asm__ volatile ("dsb\n");
+}
+#endif

u-boot/board/samsung/arndale/arndale_spl.c

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/spl.h>
+
+#define SIGNATURE	0xdeadbeef
+
+/* Parameters of early board initialization in SPL */
+static struct spl_machine_param machine_param
+		__attribute__((section(".machine_param"))) = {
+	.signature	= SIGNATURE,
+	.version	= 1,
+	.params		= "vmubfasirM",
+	.size		= sizeof(machine_param),
+
+	.mem_iv_size	= 0x1f,
+	.mem_type	= DDR_MODE_DDR3,
+
+	/*
+	 * Set uboot_size to 0x100000 bytes.
+	 *
+	 * This is an overly conservative value chosen to accommodate all
+	 * possible U-Boot image.  You are advised to set this value to a
+	 * smaller realistic size via scripts that modifies the .machine_param
+	 * section of output U-Boot image.
+	 */
+	.uboot_size	= 0x100000,
+
+	.boot_source	= BOOT_MODE_OM,
+	.frequency_mhz	= 800,
+	.arm_freq_mhz	= 1000,
+	.serial_base	= 0x12c30000,
+	.i2c_base	= 0x12c60000,
+	.mem_manuf	= MEM_MANUF_SAMSUNG,
+};
+
+struct spl_machine_param *spl_get_machine_params(void)
+{
+	if (machine_param.signature != SIGNATURE) {
+		/* Will hang if SIGNATURE dont match */
+		while (1)
+			;
+	}
+
+	return &machine_param;
+}