[U-Boot] [PATCH v6 02/10] arm: imx6ul: Add Engicam Is.IoT MX6UL Starter Kit initial support
Jagan Teki
jagan at openedev.com
Fri Feb 24 10:02:54 UTC 2017
From: Jagan Teki <jagan at amarulasolutions.com>
Boot from MMC:
-------------
U-Boot SPL 2017.01-rc2-gba3c151-dirty (Jan 02 2017 - 16:59:33)
Trying to boot from MMC1
U-Boot 2017.01-rc2-gba3c151-dirty (Jan 02 2017 - 16:59:33 +0100)
CPU: Freescale i.MX6UL rev1.1 528 MHz (running at 396 MHz)
CPU: Industrial temperature grade (-40C to 105C) at 33C
Reset cause: POR
Model: Engicam Is.IoT MX6UL Starterkit
DRAM: 512 MiB
MMC: FSL_SDHC: 0
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Net: CPU Net Initialization Failed
No ethernet found.
Hit any key to stop autoboot: 0
isiotmx6ul>
Cc: Stefano Babic <sbabic at denx.de>
Cc: Matteo Lisi <matteo.lisi at engicam.com>
Cc: Michael Trimarchi <michael at amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
---
arch/arm/cpu/armv7/mx6/Kconfig | 10 ++
arch/arm/dts/Makefile | 3 +-
arch/arm/dts/imx6ul-isiot-mmc.dts | 50 +++++++
arch/arm/dts/imx6ul-isiot.dtsi | 92 +++++++++++++
board/engicam/isiotmx6ul/Kconfig | 12 ++
board/engicam/isiotmx6ul/MAINTAINERS | 8 ++
board/engicam/isiotmx6ul/Makefile | 6 +
board/engicam/isiotmx6ul/README | 28 ++++
board/engicam/isiotmx6ul/isiotmx6ul.c | 246 ++++++++++++++++++++++++++++++++++
configs/imx6ul_isiot_mmc_defconfig | 36 +++++
include/configs/imx6ul_isiot.h | 142 ++++++++++++++++++++
11 files changed, 632 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/dts/imx6ul-isiot-mmc.dts
create mode 100644 arch/arm/dts/imx6ul-isiot.dtsi
create mode 100644 board/engicam/isiotmx6ul/Kconfig
create mode 100644 board/engicam/isiotmx6ul/MAINTAINERS
create mode 100644 board/engicam/isiotmx6ul/Makefile
create mode 100644 board/engicam/isiotmx6ul/README
create mode 100644 board/engicam/isiotmx6ul/isiotmx6ul.c
create mode 100644 configs/imx6ul_isiot_mmc_defconfig
create mode 100644 include/configs/imx6ul_isiot.h
diff --git a/arch/arm/cpu/armv7/mx6/Kconfig b/arch/arm/cpu/armv7/mx6/Kconfig
index 19cc1f6..08cd2d9 100644
--- a/arch/arm/cpu/armv7/mx6/Kconfig
+++ b/arch/arm/cpu/armv7/mx6/Kconfig
@@ -237,6 +237,15 @@ config TARGET_MX6UL_GEAM
select DM_MMC
select DM_THERMAL
select SUPPORT_SPL
+config TARGET_MX6UL_ISIOT
+ bool "Support Engicam Is.IoT MX6UL"
+ select MX6UL
+ select OF_CONTROL
+ select DM
+ select DM_GPIO
+ select DM_MMC
+ select DM_THERMAL
+ select SUPPORT_SPL
config TARGET_MX6ULL_14X14_EVK
bool "Support mx6ull_14x14_evk"
@@ -358,6 +367,7 @@ source "board/embest/mx6boards/Kconfig"
source "board/engicam/geam6ul/Kconfig"
source "board/engicam/icorem6/Kconfig"
source "board/engicam/icorem6_rqs/Kconfig"
+source "board/engicam/isiotmx6ul/Kconfig"
source "board/freescale/mx6qarm2/Kconfig"
source "board/freescale/mx6qsabreauto/Kconfig"
source "board/freescale/mx6sabresd/Kconfig"
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index eb68c20..fc30ac3 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -316,7 +316,8 @@ dtb-$(CONFIG_MX6) += imx6ull-14x14-evk.dtb \
imx6q-icore.dtb \
imx6q-icore-rqs.dtb \
imx6sx-sabreauto.dtb \
- imx6ul-geam-kit.dtb
+ imx6ul-geam-kit.dtb \
+ imx6ul-isiot-mmc.dtb
dtb-$(CONFIG_MX7) += imx7-colibri.dtb
diff --git a/arch/arm/dts/imx6ul-isiot-mmc.dts b/arch/arm/dts/imx6ul-isiot-mmc.dts
new file mode 100644
index 0000000..bb5086a
--- /dev/null
+++ b/arch/arm/dts/imx6ul-isiot-mmc.dts
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2016 Amarula Solutions B.V.
+ * Copyright (C) 2016 Engicam S.r.l.
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ * a) This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Or, alternatively
+ *
+ * b) Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED , WITHOUT WARRANTY OF ANY KIND
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+
+#include "imx6ul-isiot.dtsi"
+
+/ {
+ model = "Engicam Is.IoT MX6UL MMC Starterkit";
+ compatible = "engicam,imx6ul-isiot", "fsl,imx6ul";
+};
diff --git a/arch/arm/dts/imx6ul-isiot.dtsi b/arch/arm/dts/imx6ul-isiot.dtsi
new file mode 100644
index 0000000..6108a1a
--- /dev/null
+++ b/arch/arm/dts/imx6ul-isiot.dtsi
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2016 Amarula Solutions B.V.
+ * Copyright (C) 2016 Engicam S.r.l.
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ * a) This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Or, alternatively
+ *
+ * b) Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED , WITHOUT WARRANTY OF ANY KIND
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include "imx6ul.dtsi"
+
+/ {
+ memory {
+ reg = <0x80000000 0x20000000>;
+ };
+
+ chosen {
+ stdout-path = &uart1;
+ };
+};
+
+&uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart1>;
+ status = "okay";
+};
+
+&usdhc1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc1>;
+ cd-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
+ bus-width = <4>;
+ no-1-8-v;
+ status = "okay";
+};
+
+&iomuxc {
+ pinctrl_uart1: uart1grp {
+ fsl,pins = <
+ MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX 0x1b0b1
+ MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX 0x1b0b1
+ >;
+ };
+
+ pinctrl_usdhc1: usdhc1grp {
+ fsl,pins = <
+ MX6UL_PAD_SD1_CMD__USDHC1_CMD 0x17059
+ MX6UL_PAD_SD1_CLK__USDHC1_CLK 0x10059
+ MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x17059
+ MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x17059
+ MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x17059
+ MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x17059
+ >;
+ };
+};
diff --git a/board/engicam/isiotmx6ul/Kconfig b/board/engicam/isiotmx6ul/Kconfig
new file mode 100644
index 0000000..213ffad
--- /dev/null
+++ b/board/engicam/isiotmx6ul/Kconfig
@@ -0,0 +1,12 @@
+if TARGET_MX6UL_ISIOT
+
+config SYS_BOARD
+ default "isiotmx6ul"
+
+config SYS_VENDOR
+ default "engicam"
+
+config SYS_CONFIG_NAME
+ default "imx6ul_isiot"
+
+endif
diff --git a/board/engicam/isiotmx6ul/MAINTAINERS b/board/engicam/isiotmx6ul/MAINTAINERS
new file mode 100644
index 0000000..558e516
--- /dev/null
+++ b/board/engicam/isiotmx6ul/MAINTAINERS
@@ -0,0 +1,8 @@
+ISIOTMX6UL BOARD
+M: Jagan Teki <jagan at amarulasolutions.com>
+S: Maintained
+F: board/engicam/isiotmx6ul
+F: include/configs/imx6ul_isiot.h
+F: configs/imx6ul_isiot_mmc_defconfig
+F: arch/arm/dts/imx6ul-isiot.dtsi
+F: arch/arm/dts/imx6ul-isiot-mmc.dts
diff --git a/board/engicam/isiotmx6ul/Makefile b/board/engicam/isiotmx6ul/Makefile
new file mode 100644
index 0000000..f4f8c78
--- /dev/null
+++ b/board/engicam/isiotmx6ul/Makefile
@@ -0,0 +1,6 @@
+# Copyright (C) 2016 Amarula Solutions B.V.
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y := isiotmx6ul.o
diff --git a/board/engicam/isiotmx6ul/README b/board/engicam/isiotmx6ul/README
new file mode 100644
index 0000000..1d177ac
--- /dev/null
+++ b/board/engicam/isiotmx6ul/README
@@ -0,0 +1,28 @@
+How to use U-Boot on Engicam Is.IoT MX6UL Starter Kit:
+-----------------------------------------------------
+
+- Configure U-Boot for Engicam Is.IoT MX6UL
+
+$ make mrproper
+$ make imx6ul_isiot_mmc_defconfig
+$ make
+
+This will generate the SPL image called SPL and the u-boot-dtb.img.
+
+- Flash the SPL image into the micro SD card:
+
+sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync
+
+- Flash the u-boot-dtb.img image into the micro SD card:
+
+sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 bs=1k seek=69; sync
+
+- Jumper settings:
+
+MMC Boot: JM3 Closed
+
+- Connect the Serial cable between the Starter Kit and the PC for the console.
+(J28 is the Linux Serial console connector)
+
+- Insert the micro SD card in the board, power it up and U-Boot messages should
+come up.
diff --git a/board/engicam/isiotmx6ul/isiotmx6ul.c b/board/engicam/isiotmx6ul/isiotmx6ul.c
new file mode 100644
index 0000000..b1372d0
--- /dev/null
+++ b/board/engicam/isiotmx6ul/isiotmx6ul.c
@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2016 Amarula Solutions B.V.
+ * Copyright (C) 2016 Engicam S.r.l.
+ * Author: Jagan Teki <jagan at amarulasolutions.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+
+#include <asm/io.h>
+#include <asm/gpio.h>
+#include <linux/sizes.h>
+
+#include <asm/arch/clock.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/imx-common/iomux-v3.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define UART_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
+ PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
+ PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
+
+static iomux_v3_cfg_t const uart1_pads[] = {
+ MX6_PAD_UART1_TX_DATA__UART1_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+ MX6_PAD_UART1_RX_DATA__UART1_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+int board_early_init_f(void)
+{
+ imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
+
+ return 0;
+}
+
+int board_init(void)
+{
+ /* Address of boot parameters */
+ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+ return 0;
+}
+
+int dram_init(void)
+{
+ gd->ram_size = imx_ddr_size();
+
+ return 0;
+}
+
+#ifdef CONFIG_SPL_BUILD
+#include <libfdt.h>
+#include <spl.h>
+
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/mx6-ddr.h>
+
+/* MMC board initialization is needed till adding DM support in SPL */
+#if defined(CONFIG_FSL_ESDHC) && !defined(CONFIG_DM_MMC)
+#include <mmc.h>
+#include <fsl_esdhc.h>
+
+#define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
+ PAD_CTL_PUS_22K_UP | PAD_CTL_SPEED_LOW | \
+ PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
+
+static iomux_v3_cfg_t const usdhc1_pads[] = {
+ MX6_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_DATA0__USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_DATA1__USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_DATA2__USDHC1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_DATA3__USDHC1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+
+ /* VSELECT */
+ MX6_PAD_GPIO1_IO05__USDHC1_VSELECT | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ /* CD */
+ MX6_PAD_UART1_RTS_B__GPIO1_IO19 | MUX_PAD_CTRL(NO_PAD_CTRL),
+ /* RST_B */
+ MX6_PAD_GPIO1_IO09__GPIO1_IO09 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+#define USDHC1_CD_GPIO IMX_GPIO_NR(1, 19)
+
+struct fsl_esdhc_cfg usdhc_cfg[1] = {
+ {USDHC1_BASE_ADDR, 0, 4},
+};
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+ struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+ int ret = 0;
+
+ switch (cfg->esdhc_base) {
+ case USDHC1_BASE_ADDR:
+ ret = !gpio_get_value(USDHC1_CD_GPIO);
+ break;
+ }
+
+ return ret;
+}
+
+int board_mmc_init(bd_t *bis)
+{
+ int i, ret;
+
+ /*
+ * According to the board_mmc_init() the following map is done:
+ * (U-boot device node) (Physical Port)
+ * mmc0 USDHC1
+ */
+ for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
+ switch (i) {
+ case 0:
+ imx_iomux_v3_setup_multiple_pads(
+ usdhc1_pads, ARRAY_SIZE(usdhc1_pads));
+ gpio_direction_input(USDHC1_CD_GPIO);
+ usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
+ break;
+ default:
+ printf("Warning - USDHC%d controller not supporting\n",
+ i + 1);
+ return 0;
+ }
+
+ ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
+ if (ret) {
+ printf("Warning: failed to initialize mmc dev %d\n", i);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+#endif /* CONFIG_FSL_ESDHC */
+
+static struct mx6ul_iomux_grp_regs mx6_grp_ioregs = {
+ .grp_addds = 0x00000030,
+ .grp_ddrmode_ctl = 0x00020000,
+ .grp_b0ds = 0x00000030,
+ .grp_ctlds = 0x00000030,
+ .grp_b1ds = 0x00000030,
+ .grp_ddrpke = 0x00000000,
+ .grp_ddrmode = 0x00020000,
+ .grp_ddr_type = 0x000c0000,
+};
+
+static struct mx6ul_iomux_ddr_regs mx6_ddr_ioregs = {
+ .dram_dqm0 = 0x00000030,
+ .dram_dqm1 = 0x00000030,
+ .dram_ras = 0x00000030,
+ .dram_cas = 0x00000030,
+ .dram_odt0 = 0x00000030,
+ .dram_odt1 = 0x00000030,
+ .dram_sdba2 = 0x00000000,
+ .dram_sdclk_0 = 0x00000008,
+ .dram_sdqs0 = 0x00000038,
+ .dram_sdqs1 = 0x00000030,
+ .dram_reset = 0x00000030,
+};
+
+static struct mx6_mmdc_calibration mx6_mmcd_calib = {
+ .p0_mpwldectrl0 = 0x00070007,
+ .p0_mpdgctrl0 = 0x41490145,
+ .p0_mprddlctl = 0x40404546,
+ .p0_mpwrdlctl = 0x4040524D,
+};
+
+struct mx6_ddr_sysinfo ddr_sysinfo = {
+ .dsize = 0,
+ .cs_density = 20,
+ .ncs = 1,
+ .cs1_mirror = 0,
+ .rtt_wr = 2,
+ .rtt_nom = 1, /* RTT_Nom = RZQ/2 */
+ .walat = 1, /* Write additional latency */
+ .ralat = 5, /* Read additional latency */
+ .mif3_mode = 3, /* Command prediction working mode */
+ .bi_on = 1, /* Bank interleaving enabled */
+ .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
+ .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
+ .ddr_type = DDR_TYPE_DDR3,
+};
+
+static struct mx6_ddr3_cfg mem_ddr = {
+ .mem_speed = 800,
+ .density = 4,
+ .width = 16,
+ .banks = 8,
+ .rowaddr = 15,
+ .coladdr = 10,
+ .pagesz = 2,
+ .trcd = 1375,
+ .trcmin = 4875,
+ .trasmin = 3500,
+};
+
+static void ccgr_init(void)
+{
+ struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+
+ writel(0x00c03f3f, &ccm->CCGR0);
+ writel(0xfcffff00, &ccm->CCGR1);
+ writel(0x0cffffcc, &ccm->CCGR2);
+ writel(0x3f3c3030, &ccm->CCGR3);
+ writel(0xff00fffc, &ccm->CCGR4);
+ writel(0x033f30ff, &ccm->CCGR5);
+ writel(0x00c00fff, &ccm->CCGR6);
+}
+
+static void spl_dram_init(void)
+{
+ mx6ul_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
+ mx6_dram_cfg(&ddr_sysinfo, &mx6_mmcd_calib, &mem_ddr);
+}
+
+void board_init_f(ulong dummy)
+{
+ /* setup AIPS and disable watchdog */
+ arch_cpu_init();
+
+ ccgr_init();
+
+ /* iomux and setup of i2c */
+ board_early_init_f();
+
+ /* setup GP timer */
+ timer_init();
+
+ /* UART clocks enabled and gd valid - init serial console */
+ preloader_console_init();
+
+ /* DDR initialization */
+ spl_dram_init();
+
+ /* Clear the BSS. */
+ memset(__bss_start, 0, __bss_end - __bss_start);
+
+ /* load/boot image from boot device */
+ board_init_r(NULL, 0);
+}
+#endif /* CONFIG_SPL_BUILD */
diff --git a/configs/imx6ul_isiot_mmc_defconfig b/configs/imx6ul_isiot_mmc_defconfig
new file mode 100644
index 0000000..66eb59f
--- /dev/null
+++ b/configs/imx6ul_isiot_mmc_defconfig
@@ -0,0 +1,36 @@
+CONFIG_ARM=y
+CONFIG_ARCH_MX6=y
+CONFIG_SPL_GPIO_SUPPORT=y
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_TARGET_MX6UL_ISIOT=y
+CONFIG_SPL_EXT_SUPPORT=y
+CONFIG_SPL_LIBDISK_SUPPORT=y
+CONFIG_SPL_SERIAL_SUPPORT=y
+CONFIG_SPL_WATCHDOG_SUPPORT=y
+CONFIG_DEFAULT_DEVICE_TREE="imx6ul-isiot-mmc"
+CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg,ENV_IS_IN_MMC"
+CONFIG_BOOTDELAY=3
+CONFIG_DEFAULT_FDT_FILE="imx6ul-isiot-emmc.dtb"
+CONFIG_SPL=y
+CONFIG_HUSH_PARSER=y
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_FIT_SIGNATURE=y
+CONFIG_SYS_PROMPT="isiotmx6ul> "
+# CONFIG_CMD_IMLS is not set
+CONFIG_CMD_MEMTEST=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+# CONFIG_BLK is not set
+# CONFIG_DM_MMC_OPS is not set
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_IMX6=y
+CONFIG_MXC_UART=y
+CONFIG_IMX_THERMAL=y
diff --git a/include/configs/imx6ul_isiot.h b/include/configs/imx6ul_isiot.h
new file mode 100644
index 0000000..aba43fc
--- /dev/null
+++ b/include/configs/imx6ul_isiot.h
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2016 Amarula Solutions B.V.
+ * Copyright (C) 2016 Engicam S.r.l.
+ *
+ * Configuration settings for the Engicam Is.IoT MX6UL Starter Kits.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __IMX6UL_ISIOT_CONFIG_H
+#define __IMX6UL_ISIOT_CONFIG_H
+
+#include <linux/sizes.h>
+#include "mx6_common.h"
+
+/* Size of malloc() pool */
+#define CONFIG_SYS_MALLOC_LEN (16 * SZ_1M)
+
+/* Total Size of Environment Sector */
+#define CONFIG_ENV_SIZE SZ_128K
+
+/* Allow to overwrite serial and ethaddr */
+#define CONFIG_ENV_OVERWRITE
+
+/* Environment */
+#ifndef CONFIG_ENV_IS_NOWHERE
+/* Environment in MMC */
+# if defined(CONFIG_ENV_IS_IN_MMC)
+# define CONFIG_ENV_OFFSET 0x100000
+# endif
+#endif
+
+/* Default environment */
+#define CONFIG_EXTRA_ENV_SETTINGS \
+ "script=boot.scr\0" \
+ "image=uImage\0" \
+ "fit_image=fit.itb\0" \
+ "splashpos=m,m\0" \
+ "console=ttymxc0\0" \
+ "fdt_high=0xffffffff\0" \
+ "fdt_file=" CONFIG_DEFAULT_FDT_FILE "\0" \
+ "fdt_addr=0x87800000\0" \
+ "boot_fdt=try\0" \
+ "mmcdev=0\0" \
+ "mmcpart=1\0" \
+ "mmcroot=/dev/mmcblk0p2 rootwait rw\0" \
+ "mmcautodetect=yes\0" \
+ "mmcargs=setenv bootargs console=${console},${baudrate} " \
+ "root=${mmcroot}\0" \
+ "loadbootscript=" \
+ "fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};\0" \
+ "bootscript=echo Running bootscript from mmc ...; " \
+ "source\0" \
+ "loadimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image}\0" \
+ "loadfdt=fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdt_file}\0" \
+ "loadfit=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${fit_image}\0" \
+ "fitboot=echo Booting FIT image from mmc ...; " \
+ "run mmcargs; " \
+ "bootm ${loadaddr}\0" \
+ "mmcboot=echo Booting from mmc ...; " \
+ "run mmcargs; " \
+ "if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \
+ "if run loadfdt; then " \
+ "bootm ${loadaddr} - ${fdt_addr}; " \
+ "else " \
+ "if test ${boot_fdt} = try; then " \
+ "bootm; " \
+ "else " \
+ "echo WARN: Cannot load the DT; " \
+ "fi; " \
+ "fi; " \
+ "else " \
+ "bootm; " \
+ "fi\0"
+
+# define CONFIG_BOOTCOMMAND \
+ "if mmc rescan; then " \
+ "if run loadbootscript; then " \
+ "run bootscript; " \
+ "else " \
+ "if run loadfit; then " \
+ "run fitboot; " \
+ "else " \
+ "if run loadimage; then " \
+ "run mmcboot; " \
+ "fi; " \
+ "fi; " \
+ "fi; " \
+ "fi"
+
+/* Miscellaneous configurable options */
+#define CONFIG_SYS_MEMTEST_START 0x80000000
+#define CONFIG_SYS_MEMTEST_END (CONFIG_SYS_MEMTEST_START + 0x8000000)
+
+#define CONFIG_SYS_LOAD_ADDR CONFIG_LOADADDR
+#define CONFIG_SYS_HZ 1000
+
+/* Physical Memory Map */
+#define CONFIG_NR_DRAM_BANKS 1
+#define PHYS_SDRAM MMDC0_ARB_BASE_ADDR
+
+#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM
+#define CONFIG_SYS_INIT_RAM_ADDR IRAM_BASE_ADDR
+#define CONFIG_SYS_INIT_RAM_SIZE IRAM_SIZE
+
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
+ GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + \
+ CONFIG_SYS_INIT_SP_OFFSET)
+
+/* FIT */
+#ifdef CONFIG_FIT
+# define CONFIG_HASH_VERIFY
+# define CONFIG_SHA1
+# define CONFIG_SHA256
+# define CONFIG_IMAGE_FORMAT_LEGACY
+#endif
+
+/* UART */
+#ifdef CONFIG_MXC_UART
+# define CONFIG_MXC_UART_BASE UART1_BASE
+#endif
+
+/* MMC */
+#ifdef CONFIG_FSL_USDHC
+# define CONFIG_SYS_MMC_ENV_DEV 0
+# define CONFIG_SYS_FSL_USDHC_NUM 1
+# define CONFIG_SYS_FSL_ESDHC_ADDR 0
+#endif
+
+/* SPL */
+#ifdef CONFIG_SPL
+# define CONFIG_SPL_MMC_SUPPORT
+
+# include "imx6_spl.h"
+# ifdef CONFIG_SPL_BUILD
+# undef CONFIG_DM_GPIO
+# undef CONFIG_DM_MMC
+# endif
+#endif
+
+#endif /* __IMX6UL_ISIOT_CONFIG_H */
--
1.9.1
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