board: amlogic: move boards doc into doc/board/amlogic

[oweals/u-boot.git] / board / amlogic / p212 / README.libretech-cc

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-U-Boot for LibreTech CC
-=======================
-
-LibreTech CC is a single board computer manufactured by Libre Technology
-with the following specifications:
-
- - Amlogic S905X ARM Cortex-A53 quad-core SoC @ 1.5GHz
- - ARM Mali 450 GPU
- - 2GB DDR3 SDRAM
- - 10/100 Ethernet
- - HDMI 2.0 4K/60Hz display
- - 40-pin GPIO header
- - 4 x USB 2.0 Host
- - eMMC, microSD
- - 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
- - USB Host
- - ADC
-
-U-Boot compilation
-==================
-
- > export CROSS_COMPILE=aarch64-none-elf-
- > make libretech-cc_defconfig
- > make
-
-Image creation
-==============
-
-To boot the system, u-boot must be combined with several earlier stage
-bootloaders:
-
-* bl2.bin: vendor-provided binary blob
-* bl21.bin: built from vendor u-boot source
-* bl30.bin: vendor-provided binary blob
-* bl301.bin: built from vendor u-boot source
-* bl31.bin: vendor-provided binary blob
-* acs.bin: built from vendor u-boot source
-
-These binaries and the tools required below have been collected and prebuilt
-for convenience at <https://github.com/BayLibre/u-boot/releases/>
-
-Download and extract the libretech-cc release from there, and set FIPDIR to
-point to the `fip` subdirectory.
-
- > export FIPDIR=/path/to/extracted/fip
-
-Alternatively, you can obtain the original vendor u-boot tree which
-contains the required blobs and sources, and build yourself.
-Note that old compilers are required for this to build. The compilers here
-are suggested by Amlogic, and they are 32-bit x86 binaries.
-
- > 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:$PATH
- > git clone https://github.com/BayLibre/u-boot.git -b libretech-cc amlogic-u-boot
- > cd amlogic-u-boot
- > make libretech_cc_defconfig
- > make
- > export FIPDIR=$PWD/fip
-
-Once you have the binaries available (either through the prebuilt download,
-or having built the vendor u-boot yourself), you can then proceed to glue
-everything together. 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
-
- > $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
-
-Note that Amlogic provides aml_encrypt_gxl as a 32-bit x86 binary with no
-source code. Should you prefer to avoid that, there are open source reverse
-engineered versions available:
-
-1. gxlimg <https://github.com/repk/gxlimg>, which comes with a handy
-   Makefile that automates the whole process.
-2. meson-tools <https://github.com/afaerber/meson-tools>
-
-However, these community-developed alternatives are not endorsed by or
-supported by Amlogic.