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[WAIT] - eeprom: flashing and bootconfig #1

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[WAIT] - eeprom: flashing and bootconfig #1

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524ba69
build-eeprom: init pkg to build eeprom
sarcasticadmin Oct 3, 2023
937af7e
flash eeprom: setting the flash as optional
sarcasticadmin Oct 3, 2023
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15 changes: 15 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -63,3 +63,18 @@ arm64 machine for every package/derivation that needs to be compiled. Binfmt is
a kernel feature that will allows programs like QEMU to be span up whenever any
program tries to spawn a process for a foreign architecture.

## Update Raspberry pi

Build and copy the following drv results to the first partion on rpi formatted sdcard

```
nix build .#build-eeprom -L
```

The next boot it will update the firmware

### Ref

1. https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#eeprom-update-files

###
75 changes: 63 additions & 12 deletions flake.nix
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Expand Up @@ -23,19 +23,70 @@
pi-kiosk-sdImage = (self.nixosConfigurations.pi-kiosk.extendModules {
modules = [ "${nixpkgs}/nixos/modules/installer/sd-card/sd-image-aarch64-new-kernel-no-zfs-installer.nix" ];
}).config.system.build.sdImage;
pi-eeprom-sdImage = (self.nixosConfigurations.pi-eeprom.extendModules {
modules = [ "${nixpkgs}/nixos/modules/installer/sd-card/sd-image-aarch64-new-kernel-no-zfs-installer.nix" ];
}).config.system.build.sdImage;
build-eeprom = lib.mkOverridable
{ flash ? true }:
let
bootconf = pkgs.writeText "bootconf" ''
[all]
BOOT_UART=1
WAKE_ON_GPIO=1
POWER_OFF_ON_HALT=0
ENABLE_SELF_UPDATE=1
BOOT_ORDER=0xf2 # 2=Network boot 1=sdcard, order matters
NET_BOOT_MAX_RETRIES=5
USE_IPV6=1 # Enable IPv6, netboot is on by default

[none]
FREEZE_VERSION=0
'';
pkgs = nixpkgs.legacyPackages.aarch64-linux;
pieeprom = if flash then "pieeprom.bin" else "pieeprom.upd";
in
pkgs.runCommand "eeprom.img"
{
buildInputs = [ pkgs.raspberrypi-eeprom ];
} ''
mkdir $out
# Apply config
echo ${bootconf}
rpi-eeprom-config --config ${bootconf} --out $out/${pieeprom} ${pkgs.raspberrypi-eeprom}/share/rpi-eeprom/latest/pieeprom-2023-01-11.bin
sha256sum $out/${pieeprom} | cut -d' ' -f1 > $out/pieeprom.sig
cp ${pkgs.raspberrypi-eeprom}/share/rpi-eeprom/latest/recovery.bin $out/recovery.bin
# This needs to increase after every update to the eeprom
echo 'ts: 102' >> $out/pieeprom.sig
'';
);
};
};
};
nixosConfigurations = {
pi-kiosk = nixpkgs.lib.nixosSystem {
system = "aarch64-linux";
modules = [
nixos-hardware.nixosModules.raspberry-pi-4
./configuration.nix
./base.nix
];
nixosConfigurations = {
pi-kiosk = nixpkgs.lib.nixosSystem {
system = "aarch64-linux";
modules = [
nixos-hardware.nixosModules.raspberry-pi-4
./configuration.nix
./base.nix
];
};
pi-eeprom = nixpkgs.lib.nixosSystem {
system = "aarch64-linux";
modules = [
nixos-hardware.nixosModules.raspberry-pi-4
./base.nix
({ pkgs, ... }: {
environment.systemPackages = with pkgs; [ raspberrypi-eeprom ];
# without this we dont actually get a shell
boot.kernelParams = [
"console=ttyS0,115200"
"console=tty1"
];
})
];
};

};
};
};
};
}

}