imx: support for conga-QMX8 board

Add i.MX8QM qmx8 congatec board support

U-Boot 2021.07-rc3-00528-gc9a966d9dd (May 31 2021 - 15:21:25 +0200)

CPU:   NXP i.MX8QM RevB A53 at 1200 MHz

Model: Congatec QMX8 Qseven series
Board: conga-QMX8
Build: SCFW 494c97f3, SECO-FW d63fdb21, ATF 09c5cc9
Boot:  SD2
DRAM:  6 GiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
Loading Environment from MMC... OK
In:    serial@5a060000
Out:   serial@5a060000
Err:   serial@5a060000
switch to partitions #0, OK
mmc2 is current device
Net:
Error: ethernet@5b040000 address not set.
No ethernet found.

Hit any key to stop autoboot:  0

Signed-off-by: Oliver Graute <oliver.graute@kococonnector.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Ye Li <ye.li@nxp.com>
Cc: uboot-imx <uboot-imx@nxp.com>
diff --git a/board/congatec/common/Kconfig b/board/congatec/common/Kconfig
new file mode 100644
index 0000000..5c205bd
--- /dev/null
+++ b/board/congatec/common/Kconfig
@@ -0,0 +1,48 @@
+if !ARCH_IMX8M && !ARCH_IMX8
+
+config CHAIN_OF_TRUST
+	depends on !FIT_SIGNATURE && SECURE_BOOT
+	imply CMD_BLOB
+	imply CMD_HASH if ARM
+	select FSL_CAAM
+	select SPL_BOARD_INIT if (ARM && SPL)
+	select SHA_HW_ACCEL
+	select SHA_PROG_HW_ACCEL
+	select ENV_IS_NOWHERE
+	select CMD_EXT4 if ARM
+	select CMD_EXT4_WRITE if ARM
+	bool
+	default y
+
+config CMD_ESBC_VALIDATE
+	bool "Enable the 'esbc_validate' and 'esbc_halt' commands"
+	default y if CHAIN_OF_TRUST
+	help
+	  This option enables two commands used for secure booting:
+
+	    esbc_validate - validate signature using RSA verification
+	    esbc_halt - put the core in spin loop (Secure Boot Only)
+
+endif
+
+config VOL_MONITOR_LTC3882_READ
+	depends on VID
+	bool "Enable the LTC3882 voltage monitor read"
+	default n
+	help
+	 This option enables LTC3882 voltage monitor read
+	 functionality. It is used by common VID driver.
+
+config VOL_MONITOR_LTC3882_SET
+	depends on VID
+	bool "Enable the LTC3882 voltage monitor set"
+	default n
+	help
+	 This option enables LTC3882 voltage monitor set
+	 functionality. It is used by common VID driver.
+
+config USB_TCPC
+	bool "USB Typec port controller simple driver"
+	default n
+	help
+	  Enable USB type-c port controller (TCPC) driver
diff --git a/board/congatec/common/Makefile b/board/congatec/common/Makefile
new file mode 100644
index 0000000..d4ddfbf
--- /dev/null
+++ b/board/congatec/common/Makefile
@@ -0,0 +1,23 @@
+#
+# (C) Copyright 2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+MINIMAL=
+
+ifdef CONFIG_SPL_BUILD
+ifdef CONFIG_SPL_INIT_MINIMAL
+MINIMAL=y
+endif
+endif
+
+ifdef MINIMAL
+# necessary to create built-in.o
+obj- := __dummy__.o
+else
+
+obj-y				+= mmc.o
+
+endif
diff --git a/board/congatec/common/mmc.c b/board/congatec/common/mmc.c
new file mode 100644
index 0000000..bb7a3d4
--- /dev/null
+++ b/board/congatec/common/mmc.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ * Copyright 2018 NXP
+ *
+ */
+#include <common.h>
+#include <linux/errno.h>
+#include <asm/io.h>
+#include <env.h>
+#include <command.h>
+#include <stdbool.h>
+#include <mmc.h>
+
+static int check_mmc_autodetect(void)
+{
+	char *autodetect_str = env_get("mmcautodetect");
+
+	if ((autodetect_str) && (strcmp(autodetect_str, "yes") == 0))
+		return 1;
+
+	return 0;
+}
+
+/* This should be defined for each board */
+__weak int mmc_map_to_kernel_blk(int dev_no)
+{
+	return dev_no;
+}
+
+void board_late_mmc_env_init(void)
+{
+	char cmd[32];
+	char mmcblk[32];
+	u32 dev_no = mmc_get_env_dev();
+
+	if (!check_mmc_autodetect())
+		return;
+
+	env_set_ulong("mmcdev", dev_no);
+
+	/* Set mmcblk env */
+	sprintf(mmcblk, "/dev/mmcblk%dp2 rootwait rw",
+		mmc_map_to_kernel_blk(dev_no));
+	env_set("mmcroot", mmcblk);
+
+	sprintf(cmd, "mmc dev %d", dev_no);
+	run_command(cmd, 0);
+}