liminix/devices/qemu/default.nix

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# This "device" generates images that can be used with the QEMU
# emulator. The default output is a directory containing separate
# kernel (uncompressed vmlinux) and initrd (squashfs) images
{
system = {
crossSystem = {
config = "mips-unknown-linux-musl";
gcc = {
abi = "32";
arch = "mips32"; # maybe mips_24kc-
};
};
};
overlay = final: prev:
let inherit (final) stdenvNoCC fetchFromGitHub;
in {
sources = {
kernel =
let src = fetchFromGitHub {
name = "kernel-source";
owner = "torvalds";
repo = "linux";
rev = "3d7cb6b04c3f3115719235cc6866b10326de34cd"; # v5.19
hash = "sha256-OVsIRScAnrPleW1vbczRAj5L/SGGht2+GnvZJClMUu4=";
};
in stdenvNoCC.mkDerivation {
name = "spindled-kernel-tree";
inherit src;
phases = [
"unpackPhase"
"patchScripts" "installPhase"
];
patchScripts = ''
patchShebangs scripts/
'';
installPhase = ''
mkdir -p $out
cp -a . $out
'';
};
};
};
kernel = {
checkedConfig = {
MIPS_MALTA= "y";
CPU_LITTLE_ENDIAN= "n";
CPU_BIG_ENDIAN= "y";
CPU_MIPS32_R2= "y";
SQUASHFS = "y";
SQUASHFS_XZ = "y";
VIRTIO_MENU = "y";
PCI = "y";
VIRTIO_PCI = "y";
BLOCK = "y";
VIRTIO_BLK = "y";
NETDEVICES = "y";
VIRTIO_NET = "y";
SERIAL_8250= "y";
SERIAL_8250_CONSOLE= "y";
};
};
outputs.default = "directory";
}