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/woodburn/Kconfig

@@ -0,0 +1,25 @@
+if TARGET_WOODBURN
+
+config SYS_BOARD
+	default "woodburn"
+
+config SYS_SOC
+	default "mx35"
+
+config SYS_CONFIG_NAME
+	default "woodburn"
+
+endif
+
+if TARGET_WOODBURN_SD
+
+config SYS_BOARD
+	default "woodburn"
+
+config SYS_SOC
+	default "mx35"
+
+config SYS_CONFIG_NAME
+	default "woodburn_sd"
+
+endif

u-boot/board/woodburn/MAINTAINERS

@@ -0,0 +1,12 @@
+WOODBURN BOARD
+M:	Stefano Babic <sbabic@denx.de>
+S:	Maintained
+F:	board/woodburn/
+F:	include/configs/woodburn.h
+F:	configs/woodburn_defconfig
+
+WOODBURN_SD BOARD
+#M:	-
+S:	Maintained
+F:	include/configs/woodburn_sd.h
+F:	configs/woodburn_sd_defconfig

u-boot/board/woodburn/Makefile

@@ -0,0 +1,10 @@
+#
+# Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
+#
+# (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	:= woodburn.o
+obj-y	+= lowlevel_init.o

u-boot/board/woodburn/imximage.cfg

@@ -0,0 +1,4 @@
+BOOT_FROM      sd
+
+/* DDR2 init */
+DATA 4 0xB8001010 0x00000304

u-boot/board/woodburn/lowlevel_init.S

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
+ *
+ * (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
+ *
+ * Copyright (C) 2011, Stefano Babic <sbabic@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <config.h>
+#include <asm/arch/lowlevel_macro.S>
+
+.globl lowlevel_init
+lowlevel_init:
+
+	core_init
+
+	init_aips
+
+	init_max
+
+	init_m3if
+
+	mov pc, lr

u-boot/board/woodburn/woodburn.c

@@ -0,0 +1,251 @@
+/*
+ * Copyright (C) 2012, Stefano Babic <sbabic@denx.de>
+ *
+ * Based on flea3.c and mx35pdk.c
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/iomux-mx35.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <fsl_pmic.h>
+#include <mc13892.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <linux/types.h>
+#include <asm/gpio.h>
+#include <asm/arch/sys_proto.h>
+#include <netdev.h>
+#include <spl.h>
+
+#define CCM_CCMR_CONFIG		0x003F4208
+
+#define ESDCTL_DDR2_CONFIG	0x007FFC3F
+
+/* For MMC */
+#define GPIO_MMC_CD	7
+#define GPIO_MMC_WP	8
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1,
+		PHYS_SDRAM_1_SIZE);
+
+	return 0;
+}
+
+static void board_setup_sdram(void)
+{
+	struct esdc_regs *esdc = (struct esdc_regs *)ESDCTL_BASE_ADDR;
+
+	/* Initialize with default values both CSD0/1 */
+	writel(0x2000, &esdc->esdctl0);
+	writel(0x2000, &esdc->esdctl1);
+
+	mx3_setup_sdram_bank(CSD0_BASE_ADDR, ESDCTL_DDR2_CONFIG,
+		 13, 10, 2, 0x8080);
+}
+
+static void setup_iomux_fec(void)
+{
+	static const iomux_v3_cfg_t fec_pads[] = {
+		MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
+		MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
+		MX35_PAD_FEC_RX_DV__FEC_RX_DV,
+		MX35_PAD_FEC_COL__FEC_COL,
+		MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
+		MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
+		MX35_PAD_FEC_TX_EN__FEC_TX_EN,
+		MX35_PAD_FEC_MDC__FEC_MDC,
+		MX35_PAD_FEC_MDIO__FEC_MDIO,
+		MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
+		MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
+		MX35_PAD_FEC_CRS__FEC_CRS,
+		MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
+		MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
+		MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
+		MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
+		MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
+		MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
+	};
+
+	/* setup pins for FEC */
+	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
+}
+
+int woodburn_init(void)
+{
+	struct ccm_regs *ccm =
+		(struct ccm_regs *)IMX_CCM_BASE;
+
+	/* initialize PLL and clock configuration */
+	writel(CCM_CCMR_CONFIG, &ccm->ccmr);
+
+	/* Set-up RAM */
+	board_setup_sdram();
+
+	/* enable clocks */
+	writel(readl(&ccm->cgr0) |
+		MXC_CCM_CGR0_EMI_MASK |
+		MXC_CCM_CGR0_EDIO_MASK |
+		MXC_CCM_CGR0_EPIT1_MASK,
+		&ccm->cgr0);
+
+	writel(readl(&ccm->cgr1) |
+		MXC_CCM_CGR1_FEC_MASK |
+		MXC_CCM_CGR1_GPIO1_MASK |
+		MXC_CCM_CGR1_GPIO2_MASK |
+		MXC_CCM_CGR1_GPIO3_MASK |
+		MXC_CCM_CGR1_I2C1_MASK |
+		MXC_CCM_CGR1_I2C2_MASK |
+		MXC_CCM_CGR1_I2C3_MASK,
+		&ccm->cgr1);
+
+	/* Set-up NAND */
+	__raw_writel(readl(&ccm->rcsr) | MXC_CCM_RCSR_NFC_FMS, &ccm->rcsr);
+
+	/* Set pinmux for the required peripherals */
+	setup_iomux_fec();
+
+	/* setup GPIO1_4 FEC_ENABLE signal */
+	imx_iomux_v3_setup_pad(MX35_PAD_SCKR__GPIO1_4);
+	gpio_direction_output(4, 1);
+	imx_iomux_v3_setup_pad(MX35_PAD_HCKT__GPIO1_9);
+	gpio_direction_output(9, 1);
+
+	return 0;
+}
+
+#if defined(CONFIG_SPL_BUILD)
+void board_init_f(ulong dummy)
+{
+	/* Set the stack pointer. */
+	asm volatile("mov sp, %0\n" : : "r"(CONFIG_SPL_STACK));
+
+	/* Initialize MUX and SDRAM */
+	woodburn_init();
+
+	/* Clear the BSS. */
+	memset(__bss_start, 0, __bss_end - __bss_start);
+
+	preloader_console_init();
+	timer_init();
+
+	board_init_r(NULL, 0);
+}
+
+void spl_board_init(void)
+{
+}
+
+#endif
+
+
+/* Booting from NOR in external mode */
+int board_early_init_f(void)
+{
+	return woodburn_init();
+}
+
+
+int board_init(void)
+{
+	struct pmic *p;
+	u32 val;
+	int ret;
+
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+	ret = pmic_init(I2C_PMIC);
+	if (ret)
+		return ret;
+
+	p = pmic_get("FSL_PMIC");
+
+	/*
+	 * Set switchers in Auto in NORMAL mode & STANDBY mode
+	 * Setup the switcher mode for SW1 & SW2
+	 */
+	pmic_reg_read(p, REG_SW_4, &val);
+	val = (val & ~((SWMODE_MASK << SWMODE1_SHIFT) |
+		(SWMODE_MASK << SWMODE2_SHIFT)));
+	val |= (SWMODE_AUTO_AUTO << SWMODE1_SHIFT) |
+		(SWMODE_AUTO_AUTO << SWMODE2_SHIFT);
+	/* Set SWILIMB */
+	val |= (1 << 22);
+	pmic_reg_write(p, REG_SW_4, val);
+
+	/* Setup the switcher mode for SW3 & SW4 */
+	pmic_reg_read(p, REG_SW_5, &val);
+	val &= ~((SWMODE_MASK << SWMODE4_SHIFT) |
+		(SWMODE_MASK << SWMODE3_SHIFT));
+	val |= (SWMODE_AUTO_AUTO << SWMODE4_SHIFT) |
+		(SWMODE_AUTO_AUTO << SWMODE3_SHIFT);
+	pmic_reg_write(p, REG_SW_5, val);
+
+	/* Set VGEN1 to 3.15V */
+	pmic_reg_read(p, REG_SETTING_0, &val);
+	val &= ~(VGEN1_MASK);
+	val |= VGEN1_3_15;
+	pmic_reg_write(p, REG_SETTING_0, val);
+
+	pmic_reg_read(p, REG_MODE_0, &val);
+	val |= VGEN1EN;
+	pmic_reg_write(p, REG_MODE_0, val);
+	udelay(2000);
+
+	return 0;
+}
+
+#if defined(CONFIG_FSL_ESDHC)
+struct fsl_esdhc_cfg esdhc_cfg = {MMC_SDHC1_BASE_ADDR};
+
+int board_mmc_init(bd_t *bis)
+{
+	static const iomux_v3_cfg_t sdhc1_pads[] = {
+		MX35_PAD_SD1_CMD__ESDHC1_CMD,
+		MX35_PAD_SD1_CLK__ESDHC1_CLK,
+		MX35_PAD_SD1_DATA0__ESDHC1_DAT0,
+		MX35_PAD_SD1_DATA1__ESDHC1_DAT1,
+		MX35_PAD_SD1_DATA2__ESDHC1_DAT2,
+		MX35_PAD_SD1_DATA3__ESDHC1_DAT3,
+	};
+
+	/* configure pins for SDHC1 only */
+	imx_iomux_v3_setup_multiple_pads(sdhc1_pads, ARRAY_SIZE(sdhc1_pads));
+
+	/* MMC Card Detect on GPIO1_7 */
+	imx_iomux_v3_setup_pad(MX35_PAD_SCKT__GPIO1_7);
+	gpio_direction_input(GPIO_MMC_CD);
+
+	/* MMC Write Protection on GPIO1_8 */
+	imx_iomux_v3_setup_pad(MX35_PAD_FST__GPIO1_8);
+	gpio_direction_input(GPIO_MMC_WP);
+
+	esdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC1_CLK);
+
+	return fsl_esdhc_initialize(bis, &esdhc_cfg);
+}
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+	return !gpio_get_value(GPIO_MMC_CD);
+}
+#endif
+
+u32 get_board_rev(void)
+{
+	int rev = 0;
+
+	return (get_cpu_rev() & ~(0xF << 8)) | (rev & 0xF) << 8;
+}