board: amlogic: move khadas-vim2 as q200 ref board

The Khadas vim2 derive from amlogic s912 reference design (Q200).

This patch moves the khadas-vim2 board support to a generic Q200 board,
while keeping a dedicated defconfig to customize the names and device tree.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

arch/arm/mach-meson/Kconfig

@@ -50,13 +50,14 @@ config TARGET_P212
 	  You should also select this TARGET if you have Khadas Vim or
 	  a libretech aml-s905x-cc
 
-config TARGET_KHADAS_VIM2
+config TARGET_Q200
 	bool "KHADAS-VIM2"
 	select MESON_GXM
 	help
-	  Khadas VIM2 is a single board computer based on Meson GXM
+	  Q200 is a reference dessign board based on Meson GXM
 	  with 2/3 GiB of RAM, Ethernet, HDMI, 4 USB, micro-SD slot,
-	  eMMC, IR receiver and a 40-pin GPIO header.
+	  eMMC, IR receiver.
+	  You should also select this TARGET if you have Khadas Vim2.
 
 endchoice
 
@@ -72,6 +73,6 @@ source "board/amlogic/nanopi-k2/Kconfig"
 
 source "board/amlogic/p212/Kconfig"
 
-source "board/amlogic/khadas-vim2/Kconfig"
+source "board/amlogic/q200/Kconfig"
 
 endif

board/amlogic/q200/Kconfig

@@ -1,12 +1,12 @@
-if TARGET_KHADAS_VIM2
+if TARGET_Q200
 
 config SYS_BOARD
-	default "khadas-vim2"
+	default "q200"
 
 config SYS_VENDOR
 	default "amlogic"
 
 config SYS_CONFIG_NAME
-	default "khadas-vim2"
+	default "q200"
 
 endif

board/amlogic/q200/MAINTAINERS

@@ -1,6 +1,6 @@
-KHADAS-VIM2
+Q200
 M:	Neil Armstrong <narmstrong@baylibre.com>
 S:	Maintained
-F:	board/amlogic/khadas-vim2/
+F:	board/amlogic/q200/
-F:	include/configs/khadas-vim2.h
+F:	include/configs/q200.h
 F:	configs/khadas-vim2_defconfig

board/amlogic/q200/Makefile

@@ -3,4 +3,4 @@
 # (C) Copyright 2016 BayLibre, SAS
 # Author: Neil Armstrong <narmstrong@baylibre.com>
 
-obj-y	:= khadas-vim2.o
+obj-y	:= q200.o

board/amlogic/q200/README.q200

@@ -0,0 +1,102 @@
+U-Boot for Amlogic Q200
+=======================
+
+Q200 is a reference board manufactured by Amlogic with the following
+specifications:
+
+ - Amlogic S912 ARM Cortex-A53 octo-core SoC @ 1.5GHz
+ - ARM Mali T860 GPU
+ - 2/3GB DDR4 SDRAM
+ - 10/100/1000 Ethernet
+ - HDMI 2.0 4K/60Hz display
+ - 2 x USB 2.0 Host, 1 x USB 2.0 Device
+ - 16GB/32GB/64GB eMMC
+ - 2MB SPI Flash
+ - microSD
+ - SDIO Wifi Module, Bluetooth
+ - IR receiver
+
+Currently the u-boot port supports the following devices:
+ - serial
+ - eMMC, microSD
+ - Ethernet
+ - I2C
+ - Regulators
+ - Reset controller
+ - Clock controller
+ - USB Host
+ - ADC
+
+U-Boot compilation
+==================
+
+ > export ARCH=arm
+ > export CROSS_COMPILE=aarch64-none-elf-
+ > make khadas-vim2_defconfig
+ > make
+
+Image creation
+==============
+
+Amlogic doesn't provide sources for the firmware and for tools needed
+to create the bootloader image, so it is necessary to obtain them from
+the git tree published by the board vendor:
+
+ > wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz
+ > wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
+ > tar xvfJ gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz
+ > tar xvfJ gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
+ > export PATH=$PWD/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux/bin:$PWD/gcc-linaro-arm-none-eabi-4.8-2013.11_linux/bin:$PATH
+ > git clone https://github.com/BayLibre/u-boot.git -b n-amlogic-openlinux-20170606 amlogic-u-boot
+ > cd amlogic-u-boot
+ > make gxm_q200_v1_defconfig
+ > make
+ > export FIPDIR=$PWD/fip
+
+Go back to mainline U-Boot source tree then :
+ > mkdir fip
+
+ > cp $FIPDIR/gxl/bl2.bin fip/
+ > cp $FIPDIR/gxl/acs.bin fip/
+ > cp $FIPDIR/gxl/bl21.bin fip/
+ > cp $FIPDIR/gxl/bl30.bin fip/
+ > cp $FIPDIR/gxl/bl301.bin fip/
+ > cp $FIPDIR/gxl/bl31.img fip/
+ > cp u-boot.bin fip/bl33.bin
+
+ > $FIPDIR/blx_fix.sh \
+	fip/bl30.bin \
+	fip/zero_tmp \
+	fip/bl30_zero.bin \
+	fip/bl301.bin \
+	fip/bl301_zero.bin \
+	fip/bl30_new.bin \
+	bl30
+
+ > python $FIPDIR/acs_tool.pyc fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0
+
+ > $FIPDIR/blx_fix.sh \
+	fip/bl2_acs.bin \
+	fip/zero_tmp \
+	fip/bl2_zero.bin \
+	fip/bl21.bin \
+	fip/bl21_zero.bin \
+	fip/bl2_new.bin \
+	bl2
+
+ > $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl30_new.bin
+ > $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl31.img
+ > $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl33.bin
+ > $FIPDIR/gxl/aml_encrypt_gxl --bl2sig --input fip/bl2_new.bin --output fip/bl2.n.bin.sig
+ > $FIPDIR/gxl/aml_encrypt_gxl --bootmk \
+		--output fip/u-boot.bin \
+		--bl2 fip/bl2.n.bin.sig \
+		--bl30 fip/bl30_new.bin.enc \
+		--bl31 fip/bl31.img.enc \
+		--bl33 fip/bl33.bin.enc
+
+and then write the image to SD with:
+
+ > DEV=/dev/your_sd_device
+ > dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1
+ > dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=444

configs/khadas-vim2_defconfig

@@ -2,7 +2,7 @@ CONFIG_ARM=y
 CONFIG_ARCH_MESON=y
 CONFIG_SYS_TEXT_BASE=0x01000000
 CONFIG_MESON_GXM=y
-CONFIG_TARGET_KHADAS_VIM2=y
+CONFIG_TARGET_Q200=y
 CONFIG_DEBUG_UART_BASE=0xc81004c0
 CONFIG_DEBUG_UART_CLOCK=24000000
 CONFIG_IDENT_STRING=" khadas-vim2"