nixos-riscv/flake.nix

132 lines
3.9 KiB
Nix

{
inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
inputs.bscpkgs.url = "git+https://git.sr.ht/~rodarima/bscpkgs?ref=riscv-benchmarks";
# When changing bscpkgs, take directly from disk to avoid having to push:
#inputs.bscpkgs.url = "/home/Computational/rarias/bscpkgs";
outputs = {self, nixpkgs, ...}@inputs:
let
system = "x86_64-linux";
nixosSystem = import (nixpkgs + "/nixos/lib/eval-config.nix");
in {
#overlay = import ./overlay.nix;
nixosConfigurations = {
# The qemu configuration defines a system that runs in the RISC-V
# architecture, but is build from an x86 host machine.
qemu = nixosSystem {
specialArgs = { inherit self; };
system = "${system}";
modules = [
./configuration.nix
./vm.nix
];
};
# Same, but disable compressed instructions
qemu-nc = nixosSystem {
specialArgs = { inherit self; };
system = "${system}";
modules = [
./configuration.nix
./vm.nix
./no-compressed.nix
];
};
# FPGA Lagarto Hun CPU
lagarto-hun = nixosSystem {
specialArgs = { inherit self; };
system = "${system}";
modules = [
./configuration.nix
./lagarto-hun.nix
./no-compressed.nix
];
};
# FPGA Lagarto Ox CPU
lagarto-ox = nixosSystem {
specialArgs = { inherit self; };
system = "${system}";
modules = [
./configuration.nix
./lagarto-ox.nix
./no-compressed.nix
];
};
};
# A development shell with QEMU ready to boot the RISC-V system in an x86
# machine.
devShells.x86_64-linux.default =
let
nixosconf = self.nixosConfigurations.qemu-nc;
syspkgs = nixosconf.pkgs;
toplevel = nixosconf.config.system.build.toplevel;
in syspkgs.mkShell {
pname = "qemu-shell";
nativeBuildInputs = with syspkgs; [ qemu e2fsprogs ];
# Here we tell the run script where to find the system
NIXOS_SYSTEM_TOPLEVEL = toplevel;
OPENSBI = syspkgs.opensbi-uboot;
};
devShells.x86_64-linux.lagarto-hun =
let
nixosconf = self.nixosConfigurations.lagarto-hun;
syspkgs = nixosconf.pkgs;
build = nixosconf.config.system.build;
in syspkgs.mkShell {
pname = "lagarto-hun-shell";
TOPLEVEL = build.toplevel;
OPENSBI = syspkgs.opensbi;
KERNEL = build.kernel;
INITRD = build.initialRamdisk;
ROOTFS = build.sdImage;
UBOOT_ENV = syspkgs.uboot-env;
shellHook = ''
echo "Here are the current system pieces:"
echo " TOPLEVEL = $TOPLEVEL"
echo " KERNEL = $KERNEL"
echo " OPENSBI = $OPENSBI"
echo " INITRD = $INITRD"
echo " ROOTFS = $ROOTFS"
echo " UBOOT_ENV = $UBOOT_ENV"
'';
};
devShells.x86_64-linux.lagarto-ox =
let
nixosconf = self.nixosConfigurations.lagarto-ox;
syspkgs = nixosconf.pkgs;
build = nixosconf.config.system.build;
in syspkgs.mkShell {
pname = "lagarto-ox-shell";
TOPLEVEL = build.toplevel;
OPENSBI = syspkgs.opensbi;
KERNEL = build.kernel;
INITRD = build.initialRamdisk;
ROOTFS = build.sdImage;
UBOOT_ENV = syspkgs.uboot-env;
BITSTREAM = syspkgs.bitstream;
BOOTROM = syspkgs.bootrom;
shellHook = ''
echo "Here are the current system pieces:"
echo " TOPLEVEL = $TOPLEVEL"
echo " KERNEL = $KERNEL"
echo " OPENSBI = $OPENSBI"
echo " INITRD = $INITRD"
echo " ROOTFS = $ROOTFS"
echo " UBOOT_ENV = $UBOOT_ENV"
echo " BITSTREAM = $BITSTREAM"
echo " BOOTROM = $BOOTROM"
'';
};
devShells.x86_64-linux.lagarto-ox-rd =
self.outputs.devShells.x86_64-linux.lagarto-ox.overrideAttrs (old:{
TOPLEVEL = "";
ROOTFS = "";
});
};
}