mirror of
https://github.com/AsahiLinux/u-boot
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80d83f69c0
Improve documentation. Notably we can now support U-Boot install to the internal eMMC storage in addition to SD cards. Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> Link: https://lore.kernel.org/r/20230320114609.930145-22-christianshewitt@gmail.com [narmstrong: fixed doc build] Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
119 lines
4 KiB
ReStructuredText
119 lines
4 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+
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U-Boot for Amlogic P201 (S905)
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==============================
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P201 is a reference board manufactured by Amlogic with the following specifications:
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- Amlogic S905 ARM Cortex-A53 quad-core SoC @ 1.5GHz
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- ARM Mali 450 GPU
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- 2GB DDR3 SDRAM
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- 10/100 Ethernet
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- HDMI 2.0 4K/60Hz display
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- 2x USB 2.0 Host
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- eMMC, microSD
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- Infrared receiver
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- SDIO WiFi Module
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- CVBS + Stereo Audio Jack
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Schematics are available from Amlogic on demand.
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U-Boot Compilation
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------------------
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.. code-block:: bash
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$ export CROSS_COMPILE=aarch64-none-elf-
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$ make p201_defconfig
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$ make
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U-Boot Signing with Pre-Built FIP repo
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--------------------------------------
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.. code-block:: bash
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$ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1
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$ cd amlogic-boot-fip
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$ mkdir my-output-dir
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$ ./build-fip.sh p201 /path/to/u-boot/u-boot.bin my-output-dir
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U-Boot Manual Signing
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---------------------
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Amlogic does not provide sources for the firmware and tools needed to create a bootloader
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image but sources have been shared by Linux development contractor, Baylibre:
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.. code-block:: bash
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$ wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz
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$ wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
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$ tar xvfJ gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz
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$ tar xvfJ gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
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$ 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:$PATH
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$ git clone https://github.com/BayLibre/u-boot.git -b n-amlogic-openlinux-20170606 amlogic-u-boot
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$ cd amlogic-u-boot
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$ make gxb_p201_v1_defconfig
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$ make
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$ export FIPDIR=$PWD/fip
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Go back to mainline U-boot source tree then :
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.. code-block:: bash
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$ mkdir fip
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$ cp $FIPDIR/gxb/bl2.bin fip/
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$ cp $FIPDIR/gxb/acs.bin fip/
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$ cp $FIPDIR/gxb/bl21.bin fip/
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$ cp $FIPDIR/gxb/bl30.bin fip/
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$ cp $FIPDIR/gxb/bl301.bin fip/
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$ cp $FIPDIR/gxb/bl31.img fip/
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$ cp u-boot.bin fip/bl33.bin
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$ wget https://github.com/LibreELEC/amlogic-boot-fip/raw/master/nanopi-k2/bl1.bin.hardkernel fip/bl1.bin.hardkernel
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$ chmod +x fip/bl1.bin.hardkernel
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$ wget https://github.com/LibreELEC/amlogic-boot-fip/raw/master/nanopi-k2/aml_chksum fip/aml_chksum
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$ chmod +x fip/aml_chksum
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$ $FIPDIR/blx_fix.sh \
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fip/bl30.bin \
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fip/zero_tmp \
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fip/bl30_zero.bin \
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fip/bl301.bin \
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fip/bl301_zero.bin \
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fip/bl30_new.bin \
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bl30
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$ python $FIPDIR/acs_tool.pyc fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0
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$ $FIPDIR/blx_fix.sh \
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fip/bl2_acs.bin \
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fip/zero_tmp \
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fip/bl2_zero.bin \
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fip/bl21.bin \
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fip/bl21_zero.bin \
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fip/bl2_new.bin \
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bl2
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$ $FIPDIR/fip_create --bl30 fip/bl30_new.bin \
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--bl31 fip/bl31.img \
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--bl33 fip/bl33.bin \
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fip/fip.bin
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$ cat fip/bl2_new.bin fip/fip.bin >fip/boot_new.bin
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$ $FIPDIR/gxb/aml_encrypt_gxb --bootsig \
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--input fip/boot_new.bin \
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--output fip/u-boot.bin
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Then write U-Boot to SD or eMMC with:
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.. code-block:: bash
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$ DEV=/dev/boot_device
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$ dd if=fip/u-boot.bin of=fip/u-boot.bin.gxbb bs=512 conv=fsync
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$ dd if=fip/u-boot.bin of=fip/u-boot.bin.gxbb bs=512 seek=9 skip=8 count=87 conv=fsync,notrunc
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$ dd if=/dev/zero of=fip/u-boot.bin.gxbb bs=512 seek=8 count=1 conv=fsync,notrunc
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$ dd if=bl1.bin.hardkernel of=fip/u-boot.bin.gxbb bs=512 seek=2 skip=2 count=1 conv=fsync,notrunc
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$ ./aml_chksum fip/u-boot.bin.gxbb
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$ dd if=fip/u-boot.gxbb of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1
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$ dd if=fip/u-boot.gxbb of=$DEV conv=fsync,notrunc bs=1 count=440
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