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/aristainetos/aristainetos.c

@@ -0,0 +1,325 @@
+/*
+ * (C) Copyright 2014
+ * Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ *
+ * Based on:
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ *
+ * Author: Fabio Estevam <fabio.estevam@freescale.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/errno.h>
+#include <asm/gpio.h>
+#include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/boot_mode.h>
+#include <asm/imx-common/mxc_i2c.h>
+#include <asm/imx-common/video.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <asm/arch/mxc_hdmi.h>
+#include <asm/arch/crm_regs.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <pwm.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
+	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
+	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
+
+#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |			\
+	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
+	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
+
+#define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
+	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
+
+#define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
+		      PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
+
+#define I2C_PAD_CTRL	(PAD_CTL_PUS_100K_UP |			\
+	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |	\
+	PAD_CTL_ODE | PAD_CTL_SRE_FAST)
+
+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+
+#define DISP_PAD_CTRL	(0x10)
+
+#define ECSPI4_CS1		IMX_GPIO_NR(5, 2)
+
+#if (CONFIG_SYS_BOARD_VERSION == 1)
+#include "./aristainetos-v1.c"
+#elif ((CONFIG_SYS_BOARD_VERSION == 2) || (CONFIG_SYS_BOARD_VERSION == 3))
+#include "./aristainetos-v2.c"
+#endif
+
+
+struct i2c_pads_info i2c_pad_info1 = {
+	.scl = {
+		.i2c_mode = MX6_PAD_CSI0_DAT9__I2C1_SCL | PC,
+		.gpio_mode = MX6_PAD_CSI0_DAT9__GPIO5_IO27 | PC,
+		.gp = IMX_GPIO_NR(5, 27)
+	},
+	.sda = {
+		.i2c_mode = MX6_PAD_CSI0_DAT8__I2C1_SDA | PC,
+		.gpio_mode = MX6_PAD_CSI0_DAT8__GPIO5_IO26 | PC,
+		.gp = IMX_GPIO_NR(5, 26)
+	}
+};
+
+struct i2c_pads_info i2c_pad_info2 = {
+	.scl = {
+		.i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL | PC,
+		.gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12 | PC,
+		.gp = IMX_GPIO_NR(4, 12)
+	},
+	.sda = {
+		.i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | PC,
+		.gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13 | PC,
+		.gp = IMX_GPIO_NR(4, 13)
+	}
+};
+
+iomux_v3_cfg_t const usdhc1_pads[] = {
+	MX6_PAD_SD1_CLK__SD1_CLK	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD1_CMD__SD1_CMD	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD1_DAT0__SD1_DATA0	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD1_DAT1__SD1_DATA1	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD1_DAT2__SD1_DATA2	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD1_DAT3__SD1_DATA3	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+};
+
+int dram_init(void)
+{
+	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
+
+	return 0;
+}
+
+#ifdef CONFIG_FSL_ESDHC
+struct fsl_esdhc_cfg usdhc_cfg[2] = {
+	{USDHC1_BASE_ADDR},
+	{USDHC2_BASE_ADDR},
+};
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+	return 1;
+}
+
+int board_mmc_init(bd_t *bis)
+{
+	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
+	imx_iomux_v3_setup_multiple_pads(usdhc1_pads, ARRAY_SIZE(usdhc1_pads));
+#if (CONFIG_SYS_BOARD_VERSION == 2)
+	/*
+	 * usdhc2 has a levelshifter on the carrier board Rev. DV1,
+	 * that will automatically detect the driving direction.
+	 * During initialisation this isn't working correctly,
+	 * which causes DAT3 to be driven low towards the SD-card.
+	 * This causes a SD-card enetring the SPI-Mode
+	 * and therefore getting inaccessible until next power cycle.
+	 * As workaround we drive the DAT3 line as GPIO and set it high.
+	 * This makes usdhc2 unusable in u-boot, but works for the
+	 * initialisation in Linux
+	 */
+	imx_iomux_v3_setup_pad(MX6_PAD_SD2_DAT3__GPIO1_IO12 |
+			       MUX_PAD_CTRL(NO_PAD_CTRL));
+	gpio_direction_output(IMX_GPIO_NR(1, 12) , 1);
+#endif
+	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
+}
+#endif
+
+/*
+ * Do not overwrite the console
+ * Use always serial for U-Boot console
+ */
+int overwrite_console(void)
+{
+	return 1;
+}
+
+struct display_info_t const displays[] = {
+	{
+		.bus	= -1,
+		.addr	= 0,
+		.pixfmt	= IPU_PIX_FMT_RGB24,
+		.detect	= NULL,
+		.enable	= enable_lvds,
+		.mode	= {
+			.name           = "lb07wv8",
+			.refresh        = 60,
+			.xres           = 800,
+			.yres           = 480,
+			.pixclock       = 30066,
+			.left_margin    = 88,
+			.right_margin   = 88,
+			.upper_margin   = 20,
+			.lower_margin   = 20,
+			.hsync_len      = 80,
+			.vsync_len      = 5,
+			.sync           = FB_SYNC_EXT,
+			.vmode          = FB_VMODE_NONINTERLACED
+		}
+	}
+#if ((CONFIG_SYS_BOARD_VERSION == 2) || (CONFIG_SYS_BOARD_VERSION == 3))
+	, {
+		.bus	= -1,
+		.addr	= 0,
+		.pixfmt	= IPU_PIX_FMT_RGB24,
+		.detect	= NULL,
+		.enable	= enable_spi_display,
+		.mode	= {
+			.name           = "lg4573",
+			.refresh        = 57,
+			.xres           = 480,
+			.yres           = 800,
+			.pixclock       = 37037,
+			.left_margin    = 59,
+			.right_margin   = 10,
+			.upper_margin   = 15,
+			.lower_margin   = 15,
+			.hsync_len      = 10,
+			.vsync_len      = 15,
+			.sync           = FB_SYNC_EXT | FB_SYNC_HOR_HIGH_ACT |
+					  FB_SYNC_VERT_HIGH_ACT,
+			.vmode          = FB_VMODE_NONINTERLACED
+		}
+	}
+#endif
+};
+size_t display_count = ARRAY_SIZE(displays);
+
+/* no console on this board */
+int board_cfb_skip(void)
+{
+	return 1;
+}
+
+iomux_v3_cfg_t nfc_pads[] = {
+	MX6_PAD_NANDF_CLE__NAND_CLE		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_NANDF_ALE__NAND_ALE		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_NANDF_WP_B__NAND_WP_B	| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_NANDF_RB0__NAND_READY_B	| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_NANDF_CS0__NAND_CE0_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_SD4_CMD__NAND_RE_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_SD4_CLK__NAND_WE_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_NANDF_D0__NAND_DATA00		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_NANDF_D1__NAND_DATA01		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_NANDF_D2__NAND_DATA02		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_NANDF_D3__NAND_DATA03		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_NANDF_D4__NAND_DATA04		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_NANDF_D5__NAND_DATA05		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_NANDF_D6__NAND_DATA06		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_NANDF_D7__NAND_DATA07		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_SD4_DAT0__NAND_DQS		| MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+static void setup_gpmi_nand(void)
+{
+	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+
+	/* config gpmi nand iomux */
+	imx_iomux_v3_setup_multiple_pads(nfc_pads,
+					 ARRAY_SIZE(nfc_pads));
+
+	/* gate ENFC_CLK_ROOT clock first,before clk source switch */
+	clrbits_le32(&mxc_ccm->CCGR2, MXC_CCM_CCGR2_IOMUX_IPT_CLK_IO_MASK);
+
+	/* config gpmi and bch clock to 100 MHz */
+	clrsetbits_le32(&mxc_ccm->cs2cdr,
+			MXC_CCM_CS2CDR_ENFC_CLK_PODF_MASK |
+			MXC_CCM_CS2CDR_ENFC_CLK_PRED_MASK |
+			MXC_CCM_CS2CDR_ENFC_CLK_SEL_MASK,
+			MXC_CCM_CS2CDR_ENFC_CLK_PODF(0) |
+			MXC_CCM_CS2CDR_ENFC_CLK_PRED(3) |
+			MXC_CCM_CS2CDR_ENFC_CLK_SEL(3));
+
+	/* enable ENFC_CLK_ROOT clock */
+	setbits_le32(&mxc_ccm->CCGR2, MXC_CCM_CCGR2_IOMUX_IPT_CLK_IO_MASK);
+
+	/* enable gpmi and bch clock gating */
+	setbits_le32(&mxc_ccm->CCGR4,
+		     MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK |
+		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK |
+		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK |
+		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK |
+		     MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_OFFSET);
+
+	/* enable apbh clock gating */
+	setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK);
+}
+
+int board_init(void)
+{
+	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	setup_spi();
+
+	setup_i2c(0, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE,
+		  &i2c_pad_info1);
+	setup_i2c(1, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE,
+		  &i2c_pad_info2);
+	setup_i2c(2, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE,
+		  &i2c_pad_info3);
+	setup_i2c4();
+
+	/* SPI NOR Flash read only */
+	gpio_request(CONFIG_GPIO_ENABLE_SPI_FLASH, "ena_spi_nor");
+	gpio_direction_output(CONFIG_GPIO_ENABLE_SPI_FLASH, 0);
+	gpio_free(CONFIG_GPIO_ENABLE_SPI_FLASH);
+
+	setup_board_gpio();
+	setup_gpmi_nand();
+	setup_board_spi();
+
+	/* GPIO_1 for USB_OTG_ID */
+	clrsetbits_le32(&iomux->gpr[1], IOMUXC_GPR1_USB_OTG_ID_SEL_MASK, 0);
+	imx_iomux_v3_setup_multiple_pads(misc_pads, ARRAY_SIZE(misc_pads));
+	return 0;
+}
+
+int checkboard(void)
+{
+	printf("Board: %s\n", CONFIG_BOARDNAME);
+	return 0;
+}
+
+#ifdef CONFIG_USB_EHCI_MX6
+int board_ehci_hcd_init(int port)
+{
+	int ret;
+
+	ret = gpio_request(ARISTAINETOS_USB_H1_PWR, "usb-h1-pwr");
+	if (!ret)
+		gpio_direction_output(ARISTAINETOS_USB_H1_PWR, 1);
+	ret = gpio_request(ARISTAINETOS_USB_OTG_PWR, "usb-OTG-pwr");
+	if (!ret)
+		gpio_direction_output(ARISTAINETOS_USB_OTG_PWR, 1);
+	return 0;
+}
+
+int board_ehci_power(int port, int on)
+{
+	if (port)
+		gpio_set_value(ARISTAINETOS_USB_OTG_PWR, on);
+	else
+		gpio_set_value(ARISTAINETOS_USB_H1_PWR, on);
+	return 0;
+}
+#endif