board: asus: transformer: add ASUS Transformer T30 family support

The ASUS Transformer T30 family are 2-in-1 detachable tablets
and AiO developed by ASUS that run the Android operating system
(TF600T runs Windows RT and P1801-T runs Android and Windows).
The T30 Transformers feature a 10.1-inch display (apart P1801-T),
an Nvidia Tegra 3 quad-core chip, 1/2 GB of RAM, and 16/32 GB of
storage. Transformers board derives from Nvidia Cardhu development
board.

This patch brings support for 7 known Transformer devices:
- ASUS Transformer Prime TF201
- ASUS Transformer Pad TF300T/TF300TG/TF300TL
- ASUS VivoTab RT TF600T (Windows RT based)
- ASUS Transformer Infinity TF700T
- ASUS Portable AiO P1801-T

Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # all devices
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

2 files changed, 117 insertions, 0 deletions

diff --git a/include/configs/transformer-common.h b/include/configs/transformer-common.h
new file mode 100644
index 0000000000..dcdda1ec5b
--- /dev/null
+++ b/include/configs/transformer-common.h
@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2022, Svyatoslav Ryhel <clamor95@gmail.com>.
+ */
+
+#ifndef __TRANSFORMER_COMMON_H
+#define __TRANSFORMER_COMMON_H
+
+/* High-level configuration options */
+#define CFG_TEGRA_BOARD_STRING		"ASUS Transformer"
+
+#define TRANSFORMER_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 TRANSFORMER_FLASH_SPI \
+	"update_spi=sf probe 0:1;" \
+		"echo Dumping current SPI flash content ...;" \
+		"sf read ${kernel_addr_r} 0x0 ${spi_size};" \
+		"if fatwrite mmc 1:1 ${kernel_addr_r} spi-flash-backup.bin ${spi_size};" \
+		"then echo SPI flash content was successfully written into spi-flash-backup.bin;" \
+			"echo Reading SPI flash binary;" \
+			"if load mmc 1:1 ${kernel_addr_r} repart-block.bin;" \
+			"then echo Writing bootloader into SPI flash;" \
+				"sf probe 0:1;" \
+				"sf update ${kernel_addr_r} 0x0 ${spi_size};" \
+				"poweroff;" \
+			"else echo Preparing RAM;" \
+				"mw ${kernel_addr_r} 0 ${boot_block_size_r};" \
+				"mw ${ramdisk_addr_r} 0 ${boot_block_size_r};" \
+				"echo Reading BCT;" \
+				"sf read ${kernel_addr_r} 0x0 ${boot_block_size_r};" \
+				"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 into SPI flash;" \
+					"sf probe 0:1;" \
+					"sf update ${kernel_addr_r} 0x0 ${boot_block_size_r};" \
+					"sf update ${ramdisk_addr_r} ${boot_block_size_r} ${boot_block_size_r};" \
+					"echo Bootloader written successfully; poweroff;" \
+				"else echo Reading bootloader failed;" \
+					"poweroff; fi;" \
+			"fi;" \
+		"else echo SPI flash backup FAILED! Aborting ...;" \
+			"poweroff; fi\0"
+
+#define TRANSFORMER_REFRESH_USB \
+	"refresh_usb=usb start; usb reset; usb tree; usb info;" \
+		"pause 'Press ANY key to return to bootmenu...'; bootmenu\0"
+
+#define TRANSFORMER_BOOTMENU \
+	TRANSFORMER_FLASH_UBOOT \
+	TRANSFORMER_FLASH_SPI \
+	TRANSFORMER_REFRESH_USB \
+	"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=refresh USB=run refresh_usb\0" \
+	"bootmenu_5=reboot RCM=enterrcm\0" \
+	"bootmenu_6=reboot=reset\0" \
+	"bootmenu_7=power off=poweroff\0" \
+	"bootmenu_delay=-1\0"
+
+#define BOARD_EXTRA_ENV_SETTINGS \
+	"spi_size=0x400000\0" \
+	"boot_block_size_r=0x200000\0" \
+	"boot_block_size=0x1000\0" \
+	"check_button=gpio input ${gpio_button}; test $? -eq 0;\0" \
+	"bootloader_file=u-boot-dtb-tegra.bin\0" \
+	"partitions=name=emmc,start=0,size=-,uuid=${uuid_gpt_rootfs}\0" \
+	TRANSFORMER_BOOTMENU
+
+#endif /* __CONFIG_H */
diff --git a/include/configs/transformer-t30.h b/include/configs/transformer-t30.h
new file mode 100644
index 0000000000..d2a16f12c1
--- /dev/null
+++ b/include/configs/transformer-t30.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ *  (C) Copyright 2010,2012
+ *  NVIDIA Corporation <www.nvidia.com>
+ *
+ *  (C) Copyright 2022
+ *  Svyatoslav Ryhel <clamor95@gmail.com>
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <linux/sizes.h>
+
+#include "tegra30-common.h"
+#include "transformer-common.h"
+
+/* Board-specific serial config */
+#define CFG_SYS_NS16550_COM1		NV_PA_APB_UARTA_BASE
+
+#include "tegra-common-post.h"
+
+#endif /* __CONFIG_H */