board: wexler: qc750: add WEXLER Tab 7t support

WEXLER Tab 7t is a mini tablet computer developed by WEXLER that
runs the Android operating system. The device features a 7.0-inch
(180 mm) HD display, an Nvidia Tegra 3 quad-core chip, 1 GB of RAM,
8, 16 or 32 GB of storage that can be supplemented with a microSDXC
card giving up to 64 GB of additional storage and a full size USB
port.

Tested-by: Maksim Kurnosenko <asusx2@mail.ru>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
diff --git a/include/configs/qc750.h b/include/configs/qc750.h
new file mode 100644
index 0000000..ce6665d
--- /dev/null
+++ b/include/configs/qc750.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ *  (C) Copyright 2010,2012
+ *  NVIDIA Corporation <www.nvidia.com>
+ *
+ *  (C) Copyright 2023
+ *  Svyatoslav Ryhel <clamor95@gmail.com>
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include "tegra30-common.h"
+
+/* High-level configuration options */
+#define CFG_TEGRA_BOARD_STRING		"Wexler QC750"
+
+#define QC750_FLASH_UBOOT \
+	"flash_uboot=echo Preparing RAM;" \
+		"mw ${kernel_addr_r} 0 ${boot_block_size_r};" \
+		"mw ${ramdisk_addr_r} 0 ${boot_block_size_r};" \
+		"echo Reading BCT;" \
+		"mmc dev 0 1;" \
+		"mmc read ${kernel_addr_r} 0 ${boot_block_size};" \
+		"echo Reading bootloader;" \
+		"if load mmc 1:1 ${ramdisk_addr_r} ${bootloader_file};" \
+		"then echo Calculating bootloader size;" \
+			"size mmc 1:1 ${bootloader_file};" \
+			"ebtupdate ${kernel_addr_r} ${ramdisk_addr_r} ${filesize};" \
+			"echo Writing bootloader to eMMC;" \
+			"mmc dev 0 1;" \
+			"mmc write ${kernel_addr_r} 0 ${boot_block_size};" \
+			"mmc dev 0 2;" \
+			"mmc write ${ramdisk_addr_r} 0 ${boot_block_size};" \
+			"echo Bootloader written successfully;" \
+			"pause 'Press ANY key to reboot device...'; reset;" \
+		"else echo Reading bootloader failed;" \
+			"pause 'Press ANY key to return to bootmenu...'; bootmenu; fi\0"
+
+#define QC750_BOOTMENU \
+	QC750_FLASH_UBOOT \
+	"bootmenu_0=mount internal storage=usb start && ums 0 mmc 0; bootmenu\0" \
+	"bootmenu_1=mount external storage=usb start && ums 0 mmc 1; bootmenu\0" \
+	"bootmenu_2=fastboot=echo Starting Fastboot protocol ...; fastboot usb 0; bootmenu\0" \
+	"bootmenu_3=update bootloader=run flash_uboot\0" \
+	"bootmenu_4=reboot RCM=enterrcm\0" \
+	"bootmenu_5=reboot=reset\0" \
+	"bootmenu_6=power off=poweroff\0" \
+	"bootmenu_delay=-1\0"
+
+#define BOARD_EXTRA_ENV_SETTINGS \
+	"boot_block_size_r=0x200000\0" \
+	"boot_block_size=0x1000\0" \
+	"bootloader_file=u-boot-dtb-tegra.bin\0" \
+	"button_cmd_0_name=Volume Down\0" \
+	"button_cmd_0=bootmenu\0" \
+	"partitions=name=emmc,start=0,size=-,uuid=${uuid_gpt_rootfs}\0" \
+	QC750_BOOTMENU
+
+/* Board-specific serial config */
+#define CFG_SYS_NS16550_COM1		NV_PA_APB_UARTD_BASE
+
+#include "tegra-common-post.h"
+
+#endif /* __CONFIG_H */