boards: amlogic: add Khadas VIM3L support

Khadas VIM3L uses the same board layout as VIM3, but with an S905D3 chip
instead of A311D. Board config is derived from khadas-vim3_defconfig and
sei610_defconfig. README is based on README.khadas-vim3; the difference
is that VIM3L uses FIP files from the g12a folder in vendor sources not
the g12b folder.

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
[narmstrong: added vim3l readme into w400 MAINTAINERS]

2 files changed, 133 insertions, 0 deletions

diff --git a/board/amlogic/w400/MAINTAINERS b/board/amlogic/w400/MAINTAINERS
index 3b21f50..2ff9003 100644
--- a/board/amlogic/w400/MAINTAINERS
+++ b/board/amlogic/w400/MAINTAINERS
@@ -4,4 +4,5 @@ S:	Maintained
 L:	u-boot-amlogic@groups.io
 F:	board/amlogic/w400/
 F:	configs/khadas-vim3_defconfig
+F:	configs/khadas-vim3l_defconfig
 F:	configs/odroid-n2_defconfig
diff --git a/board/amlogic/w400/README.khadas-vim3l b/board/amlogic/w400/README.khadas-vim3l
new file mode 100644
index 0000000..0afff16
--- /dev/null
+++ b/board/amlogic/w400/README.khadas-vim3l
@@ -0,0 +1,132 @@
+U-Boot for Khadas VIM3L
+=======================
+
+Khadas VIM3L is a single board computer manufactured by Shenzhen Wesion
+Technology Co., Ltd. with the following specifications:
+
+ - Amlogic S905D3 Arm Cortex-A55 quad-core SoC
+ - 2GB LPDDR4 SDRAM
+ - Gigabit Ethernet
+ - HDMI 2.1 display
+ - 40-pin GPIO header
+ - 1 x USB 3.0 Host, 1 x USB 2.0 Host
+ - eMMC, microSD
+ - M.2
+ - Infrared receiver
+
+Schematics are available on the manufacturer website.
+
+Currently the U-Boot port supports the following devices:
+ - serial
+ - eMMC, microSD
+ - Ethernet
+ - I2C
+ - Regulators
+ - Reset controller
+ - Clock controller
+ - ADC
+
+u-boot compilation
+==================
+
+ > export ARCH=arm
+ > export CROSS_COMPILE=aarch64-none-elf-
+ > make khadas-vim3l_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
+
+ > DIR=vim3l-u-boot
+ > git clone --depth 1 \
+       https://github.com/khadas/u-boot.git -b khadas-vims-v2015.01 \
+       $DIR
+
+ > cd vim3l-u-boot
+ > make kvim3l_defconfig
+ > make
+ > export UBOOTDIR=$PWD
+
+ Go back to mainline U-Boot source tree then :
+ > mkdir fip
+
+ > cp $UBOOTDIR/build/scp_task/bl301.bin fip/
+ > cp $UBOOTDIR/build/board/khadas/kvim3l/firmware/acs.bin fip/
+ > cp $UBOOTDIR/fip/g12a/bl2.bin fip/
+ > cp $UBOOTDIR/fip/g12a/bl30.bin fip/
+ > cp $UBOOTDIR/fip/g12a/bl31.img fip/
+ > cp $UBOOTDIR/fip/g12a/ddr3_1d.fw fip/
+ > cp $UBOOTDIR/fip/g12a/ddr4_1d.fw fip/
+ > cp $UBOOTDIR/fip/g12a/ddr4_2d.fw fip/
+ > cp $UBOOTDIR/fip/g12a/diag_lpddr4.fw fip/
+ > cp $UBOOTDIR/fip/g12a/lpddr3_1d.fw fip/
+ > cp $UBOOTDIR/fip/g12a/lpddr4_1d.fw fip/
+ > cp $UBOOTDIR/fip/g12a/lpddr4_2d.fw fip/
+ > cp $UBOOTDIR/fip/g12a/piei.fw fip/
+ > cp $UBOOTDIR/fip/g12a/aml_ddr.fw fip/
+ > cp u-boot.bin fip/bl33.bin
+
+ > sh fip/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
+
+ > sh fip/blx_fix.sh \
+	fip/bl2.bin \
+	fip/zero_tmp \
+	fip/bl2_zero.bin \
+	fip/acs.bin \
+	fip/bl21_zero.bin \
+	fip/bl2_new.bin \
+	bl2
+
+ > $UBOOTDIR/fip/g12a/aml_encrypt_g12a --bl30sig --input fip/bl30_new.bin \
+					--output fip/bl30_new.bin.g12a.enc \
+					--level v3
+ > $UBOOTDIR/fip/g12a/aml_encrypt_g12a --bl3sig --input fip/bl30_new.bin.g12a.enc \
+					--output fip/bl30_new.bin.enc \
+					--level v3 --type bl30
+ > $UBOOTDIR/fip/g12a/aml_encrypt_g12a --bl3sig --input fip/bl31.img \
+					--output fip/bl31.img.enc \
+					--level v3 --type bl31
+ > $UBOOTDIR/fip/g12a/aml_encrypt_g12a --bl3sig --input fip/bl33.bin --compress lz4 \
+					--output fip/bl33.bin.enc \
+					--level v3 --type bl33 --compress lz4
+ > $UBOOTDIR/fip/g12a/aml_encrypt_g12a --bl2sig --input fip/bl2_new.bin \
+					--output fip/bl2.n.bin.sig
+ > $UBOOTDIR/fip/g12a/aml_encrypt_g12a --bootmk \
+		--output fip/u-boot.bin \
+		--bl2 fip/bl2.n.bin.sig \
+		--bl30 fip/bl30_new.bin.enc \
+		--bl31 fip/bl31.img.enc \
+		--bl33 fip/bl33.bin.enc \
+		--ddrfw1 fip/ddr4_1d.fw \
+		--ddrfw2 fip/ddr4_2d.fw \
+		--ddrfw3 fip/ddr3_1d.fw \
+		--ddrfw4 fip/piei.fw \
+		--ddrfw5 fip/lpddr4_1d.fw \
+		--ddrfw6 fip/lpddr4_2d.fw \
+		--ddrfw7 fip/diag_lpddr4.fw \
+		--ddrfw8 fip/aml_ddr.fw \
+		--ddrfw9 fip/lpddr3_1d.fw \
+		--level v3
+
+and then write the image to SD with:
+
+ > DEV=/dev/your_sd_device
+ > dd if=fip/u-boot.bin.sd.bin of=$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