board: toradex: add apalis imx8qm 4gb wb it v1.0b module support

This commit adds initial support for the Toradex Apalis iMX8QM 4GB WB IT
V1.0B module. Unlike the V1.0A early access samples exclusively booting
from SD card, they are now strapped to boot from eFuses which are
factory fused to properly boot from their on-module eMMC. U-Boot
supports either booting from the on-module eMMC or may be used for
recovery purpose using the universal update utility (uuu) aka mfgtools
3.0.

Functionality wise the following is known to be working:
- eMMC, 8-bit and 4-bit MMC/SD card slots
- Gigabit Ethernet
- GPIOs
- I2C

Unfortunately, there is no USB functionality for the i.MX 8QM as of yet.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Max Krummenacher <max.krummenacher@toradex.com>

6 files changed, 284 insertions, 0 deletions

diff --git a/board/toradex/apalis-imx8/Kconfig b/board/toradex/apalis-imx8/Kconfig
new file mode 100644
index 0000000000..c680d63fa1
--- /dev/null
+++ b/board/toradex/apalis-imx8/Kconfig
@@ -0,0 +1,30 @@
+if TARGET_APALIS_IMX8
+
+config SYS_BOARD
+	default "apalis-imx8"
+
+config SYS_VENDOR
+	default "toradex"
+
+config SYS_CONFIG_NAME
+	default "apalis-imx8"
+
+config TDX_CFG_BLOCK
+	default y
+
+config TDX_HAVE_MMC
+	default y
+
+config TDX_CFG_BLOCK_DEV
+	default "0"
+
+config TDX_CFG_BLOCK_PART
+	default "1"
+
+# Toradex config block in eMMC, at the end of 1st "boot sector"
+config TDX_CFG_BLOCK_OFFSET
+	default "-512"
+
+source "board/toradex/common/Kconfig"
+
+endif
diff --git a/board/toradex/apalis-imx8/MAINTAINERS b/board/toradex/apalis-imx8/MAINTAINERS
new file mode 100644
index 0000000000..c9ac58b47b
--- /dev/null
+++ b/board/toradex/apalis-imx8/MAINTAINERS
@@ -0,0 +1,9 @@
+Apalis iMX8
+M:	Marcel Ziswiler <marcel.ziswiler@toradex.com>
+W:	http://developer.toradex.com/software/linux/linux-software
+S:	Maintained
+F:	arch/arm/dts/fsl-imx8-apalis.dts
+F:	arch/arm/dts/fsl-imx8-apalis-u-boot.dtsi
+F:	board/toradex/apalis-imx8/
+F:	configs/apalis-imx8qm_defconfig
+F:	include/configs/apalis-imx8.h
diff --git a/board/toradex/apalis-imx8/Makefile b/board/toradex/apalis-imx8/Makefile
new file mode 100644
index 0000000000..a8c3eb7240
--- /dev/null
+++ b/board/toradex/apalis-imx8/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright 2019 Toradex
+#
+
+obj-y += apalis-imx8.o
diff --git a/board/toradex/apalis-imx8/README b/board/toradex/apalis-imx8/README
new file mode 100644
index 0000000000..e6e3dcb367
--- /dev/null
+++ b/board/toradex/apalis-imx8/README
@@ -0,0 +1,66 @@
+U-Boot for the Toradex Apalis iMX8QM V1.0B Module
+
+Quick Start
+===========
+
+- Build the ARM trusted firmware binary
+- Get scfw_tcm.bin and ahab-container.img
+- Build U-Boot
+- Load U-Boot binary using uuu
+- Flash U-Boot binary into the eMMC
+- Boot
+
+Get and Build the ARM Trusted Firmware
+======================================
+
+$ git clone -b imx_4.14.78_1.0.0_ga https://source.codeaurora.org/external/imx/imx-atf
+$ cd imx-atf/
+$ make PLAT=imx8qm bl31
+
+Get scfw_tcm.bin and ahab-container.img
+=======================================
+
+$ wget https://github.com/toradex/meta-fsl-bsp-release/blob/toradex-sumo-4.14.78-1.0.0_ga-bringup/imx/meta-bsp/recipes-bsp/imx-sc-firmware/files/mx8qm-apalis-scfw-tcm.bin?raw=true
+$ mv mx8qm-apalis-scfw-tcm.bin\?raw\=true mx8qm-apalis-scfw-tcm.bin
+$ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.0.bin
+$ chmod +x firmware-imx-8.0.bin
+$ ./firmware-imx-8.0.bin
+
+Copy the following binaries to the U-Boot folder:
+
+$ cp imx-atf/build/imx8qm/release/bl31.bin .
+$ cp u-boot/u-boot.bin .
+
+Copy the following firmware to the U-Boot folder:
+
+$ cp firmware-imx-8.0/firmware/seco/ahab-container.img .
+
+Build U-Boot
+============
+
+$ make apalis-imx8qm_defconfig
+$ make u-boot-dtb.imx
+
+Load the U-Boot Binary Using UUU
+================================
+
+Get the latest version of the universal update utility (uuu) aka mfgtools 3.0:
+
+https://community.nxp.com/external-link.jspa?url=https%3A%2F%2Fgithub.com%2FNXPmicro%2Fmfgtools%2Freleases
+
+Put the module into USB recovery aka serial downloader mode, connect USB device
+to your host and execute uuu:
+
+sudo ./uuu u-boot/u-boot-dtb.imx
+
+Flash the U-Boot Binary into the eMMC
+=====================================
+
+Burn the u-boot-dtb.imx binary to the primary eMMC hardware boot area partition:
+
+load mmc 1:1 $loadaddr u-boot-dtb.imx
+setexpr blkcnt ${filesize} + 0x1ff && setexpr blkcnt ${blkcnt} / 0x200
+mmc dev 0 1
+mmc write ${loadaddr} 0x0 ${blkcnt}
+
+Boot
diff --git a/board/toradex/apalis-imx8/apalis-imx8.c b/board/toradex/apalis-imx8/apalis-imx8.c
new file mode 100644
index 0000000000..f516e546a8
--- /dev/null
+++ b/board/toradex/apalis-imx8/apalis-imx8.c
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019 Toradex
+ */
+
+#include <common.h>
+
+#include <asm/arch/clock.h>
+#include <asm/arch/imx8-pins.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/sci/sci.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <environment.h>
+#include <errno.h>
+#include <linux/libfdt.h>
+
+#include "../common/tdx-cfg-block.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define UART_PAD_CTRL	((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
+			 (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
+			 (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
+			 (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
+
+static iomux_cfg_t uart1_pads[] = {
+	SC_P_UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	SC_P_UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+static void setup_iomux_uart(void)
+{
+	imx8_iomux_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
+}
+
+int board_early_init_f(void)
+{
+	sc_pm_clock_rate_t rate;
+	sc_err_t err = 0;
+
+	/* Power up UART1 */
+	err = sc_pm_set_resource_power_mode(-1, SC_R_UART_1, SC_PM_PW_MODE_ON);
+	if (err != SC_ERR_NONE)
+		return 0;
+
+	/* Set UART3 clock root to 80 MHz */
+	rate = 80000000;
+	err = sc_pm_set_clock_rate(-1, SC_R_UART_1, SC_PM_CLK_PER, &rate);
+	if (err != SC_ERR_NONE)
+		return 0;
+
+	/* Enable UART1 clock root */
+	err = sc_pm_clock_enable(-1, SC_R_UART_1, SC_PM_CLK_PER, true, false);
+	if (err != SC_ERR_NONE)
+		return 0;
+
+	setup_iomux_uart();
+
+	return 0;
+}
+
+#if IS_ENABLED(CONFIG_DM_GPIO)
+static void board_gpio_init(void)
+{
+	/* TODO */
+}
+#else
+static inline void board_gpio_init(void) {}
+#endif
+
+#if IS_ENABLED(CONFIG_FEC_MXC)
+#include <miiphy.h>
+
+int board_phy_config(struct phy_device *phydev)
+{
+	if (phydev->drv->config)
+		phydev->drv->config(phydev);
+
+	return 0;
+}
+#endif
+
+void build_info(void)
+{
+	u32 sc_build = 0, sc_commit = 0;
+
+	/* Get SCFW build and commit id */
+	sc_misc_build_info(-1, &sc_build, &sc_commit);
+	if (!sc_build) {
+		printf("SCFW does not support build info\n");
+		sc_commit = 0; /* Display 0 if build info not supported */
+	}
+	printf("Build: SCFW %x\n", sc_commit);
+}
+
+int checkboard(void)
+{
+	puts("Model: Toradex Apalis iMX8\n");
+
+	build_info();
+	print_bootinfo();
+
+	return 0;
+}
+
+int board_init(void)
+{
+	board_gpio_init();
+
+	return 0;
+}
+
+void detail_board_ddr_info(void)
+{
+	puts("\nDDR    ");
+}
+
+/*
+ * Board specific reset that is system reset.
+ */
+void reset_cpu(ulong addr)
+{
+	/* TODO */
+}
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+int ft_board_setup(void *blob, bd_t *bd)
+{
+	return ft_common_board_setup(blob, bd);
+}
+#endif
+
+int board_mmc_get_env_dev(int devno)
+{
+	return devno;
+}
+
+int board_late_init(void)
+{
+#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
+/* TODO move to common */
+	env_set("board_name", "Apalis iMX8QM");
+	env_set("board_rev", "v1.0");
+#endif
+
+	return 0;
+}
diff --git a/board/toradex/apalis-imx8/apalis-imx8qm-imximage.cfg b/board/toradex/apalis-imx8/apalis-imx8qm-imximage.cfg
new file mode 100644
index 0000000000..71981f8c55
--- /dev/null
+++ b/board/toradex/apalis-imx8/apalis-imx8qm-imximage.cfg
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2019 Toradex
+ *
+ * Refer doc/README.imx8image for more details about how-to configure
+ * and create imx8image boot image
+ */
+
+#define __ASSEMBLY__
+
+/* Boot from SD, sector size 0x400 */
+BOOT_FROM EMMC_FASTBOOT 0x400
+/* SoC type IMX8QM */
+SOC_TYPE IMX8QM
+/* Append seco container image */
+APPEND mx8qm-ahab-container.img
+/* Create the 2nd container */
+CONTAINER
+/* Add scfw image with exec attribute */
+IMAGE SCU mx8qm-apalis-scfw-tcm.bin
+/* Add ATF image with exec attribute */
+IMAGE A35 bl31.bin 0x80000000
+/* Add U-Boot image with load attribute */
+DATA A35 u-boot-dtb.bin 0x80020000