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NixOS on ARM/Banana Pi BPI-M5: Difference between revisions

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Replaced the outdated instructions with currently working ones. The issue was the gcc-arm-embedded package not providing the needed cross compiler anymore, along with shebang issues. This is my first time editing the wiki, so please check everything extra hard for issues.
 
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{{ARM/breadcrumb}}
{{ARM/breadcrumb}}


== Status ==
'''Note:''' To build an image for a BPI-M5 you will need to use flakes. If you don't know them or need to set them up for your system, follow [[Flakes|the Flakes Wiki page]].


Work in progress
== Setting up the Flake for cross-compilation ==
Create a folder with a name of your choosing. In it create a flake.nix file with the following contents:<syntaxhighlight lang="nix">
{
  description = "Banana Pi M5 NixOS Build Environment";


== Building Amlogic-compatible U-Boot ==
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
  };
 
  outputs = { nixpkgs, ... }: let
    system = "x86_64-linux";
    pkgs = import nixpkgs { inherit system; };
 
    # Expose the correct AArch64 cross-compilation package set
    crossPkgs = import nixpkgs {
      inherit system;
      crossSystem = {
        config = "aarch64-unknown-linux-gnu";
      };
    };
  in {
    devShells.${system}.default = pkgs.mkShell {
      packages = [
        # For patching shebangs in the official build scripts
        pkgs.stdenv
 
        # Provides the 64-bit aarch64-unknown-linux-gnu-gcc
        crossPkgs.buildPackages.gcc
 
        # Retained for Amlogic's 32-bit SCP/BL30 binary generation
        pkgs.gcc-arm-embedded
 
        pkgs.ubootTools
        pkgs.dtc
        pkgs.flex
        pkgs.bison
        pkgs.swig
 
        pkgs.openssl
        pkgs.gnutls
 
        # Resolves the insecure Python 2 dependency
        pkgs.python3
      ];


      # Pre-set the build variables expected by Make
      shellHook = ''
        export CROSS_COMPILE="aarch64-unknown-linux-gnu-"
        export ARCH="arm"
      '';
    };
  };
}


</syntaxhighlight>
== Building Amlogic-compatible U-Boot ==
=== Building U-Boot ===
=== Building U-Boot ===
'''Note:''' Do not use the severely outdated [https://github.com/BPI-SINOVOIP/BPI-M5-bsp BPI-M5-bsp] or [https://github.com/Dangku/Amlogic-u-boot Amlogic-u-boot] to build u-boot.
'''Note:''' Do not use the severely outdated [https://github.com/BPI-SINOVOIP/BPI-M5-bsp BPI-M5-bsp] or [https://github.com/Dangku/Amlogic-u-boot Amlogic-u-boot] to build u-boot.


<syntaxhighlight lang="shell-session">
<syntaxhighlight lang="shell-session">
$ nix develop
$ git clone git://git.denx.de/u-boot.git
$ git clone git://git.denx.de/u-boot.git
$ cd u-boot
$ cd u-boot
$ nix-shell -p ubootTools gcc-arm-embedded dtc flex bison python swig
$ make -j$(nproc) bananapi-m5_defconfig
$ make -j$(nproc) ARCH=arm CROSS_COMPILE=aarch64-unknown-linux-gnu- bananapi-m5_defconfig
$ make -j$(nproc)
$ make -j$(nproc) ARCH=arm CROSS_COMPILE=aarch64-unknown-linux-gnu-
$ cd ..
$ cd ..
</syntaxhighlight>
</syntaxhighlight>
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'''Note:''' The following steps require an AMD64 platform.
'''Note:''' The following steps require an AMD64 platform.


<syntaxhighlight lang="shell-session">
<syntaxhighlight lang="shell-session">$ git clone https://github.com/LibreELEC/amlogic-boot-fip
$ git clone https://github.com/LibreELEC/amlogic-boot-fip
$ cd amlogic-boot-fip
$ cd amlogic-boot-fip
$ mkdir -p output-bananapim5/
$ mkdir -p output-bananapim5/
$ patchShebangs .
$ ./build-fip.sh bananapi-m5 ../u-boot/u-boot.bin output-bananapim5
$ ./build-fip.sh bananapi-m5 ../u-boot/u-boot.bin output-bananapim5
$ hexdump -C -n 32 output-bananapim5/u-boot.bin | grep "40 41 4d 4c"
$ hexdump -C -n 32 output-bananapim5/u-boot.bin | grep "40 41 4d 4c"
$ cd ..
$ cd ..</syntaxhighlight>
</syntaxhighlight>


Verify that the new u-boot.bin contains <code>40 41 4d 4c</code> (<code>@AML</code>) at 0x10 onwards.
Verify that the new u-boot.bin contains <code>40 41 4d 4c</code> (<code>@AML</code>) at 0x10 onwards.
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== Board-specific installation notes ==
== Board-specific installation notes ==


First follow the [[NixOS_on_ARM#SD_card_images_.28SBCs_and_similar_platforms.29|NixOS_on_ARM instructions to get the SD card image]] and decompress it.
First follow the [[NixOS on ARM/Installation|NixOS_on_ARM instructions to get the SD card image]] and decompress it.


Once the image has been decompressed, the Amlogic U-Boot package needs to be copied to byte 512+ inside the image (replace the image with the name downloaded and decompressed image):
Once the image has been decompressed, the Amlogic U-Boot package needs to be copied to byte 512+ inside the image (replace the image with the name downloaded and decompressed image):


<syntaxhighlight lang="shell-session">
<syntaxhighlight lang="shell-session">$ sudo dd if=amlogic-boot-fip/output-bananapim5/u-boot.bin of=nixos-sd-image-22.11.2620.de5448dab58-aarch64-linux.img conv=fsync,notrunc bs=512 seek=1</syntaxhighlight>
$ sudo dd if=amlogic-boot-fip/output-bananapim5/u-boot.bin of=nixos-sd-image-22.11.2620.de5448dab58-aarch64-linux.img conv=fsync,notrunc bs=512 seek=1
</syntaxhighlight>


Then, copy the image onto the eMMC or sdcard using the [[NixOS_on_ARM#Installation_steps|the installation steps]].
Then, copy the image onto the eMMC or sdcard using the [[NixOS_on_ARM#Installation_steps|the installation steps]].
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* [https://wiki.banana-pi.org/Banana_Pi_BPI-M5 Official product page]
* [https://wiki.banana-pi.org/Banana_Pi_BPI-M5 Official product page]
* [https://u-boot.readthedocs.io/en/latest/board/amlogic/odroid-c4.html Installation here is based on the U-Boot for Odroid C4 documentation]
* [https://u-boot.readthedocs.io/en/latest/board/amlogic/odroid-c4.html Installation here is based on the U-Boot for Odroid C4 documentation]
[[Category:NixOS on ARM]]
Retrieved from "https://wiki.nixos.org/wiki/NixOS_on_ARM/Banana_Pi_BPI-M5"