148 lines
4.4 KiB
Nix
148 lines
4.4 KiB
Nix
{
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inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
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inputs.bscpkgs.url = "git+https://git.sr.ht/~rodarima/bscpkgs";
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outputs = {self, nixpkgs, ...}@inputs:
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let
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system = "x86_64-linux";
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nixosSystem = import (nixpkgs + "/nixos/lib/eval-config.nix");
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mkRoots = pkgs: list: pkgs.writeText "gcroots.json"
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(builtins.toJSON (map (x: { drv = x; attrs = x.drvAttrs; }) list));
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in {
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#overlay = import ./overlay.nix;
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nixosConfigurations = {
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# The qemu configuration defines a system that runs in the RISC-V
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# architecture, but is build from an x86 host machine.
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qemu = nixosSystem {
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specialArgs = { inherit self; };
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system = "${system}";
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modules = [
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./configuration.nix
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./vm.nix
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];
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};
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# Same, but disable compressed instructions
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qemu-nc = nixosSystem {
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specialArgs = { inherit self; };
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system = "${system}";
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modules = [
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./configuration.nix
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./vm.nix
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./no-compressed.nix
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];
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};
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# FPGA Lagarto Hun CPU
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lagarto-hun = nixosSystem {
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specialArgs = { inherit self; };
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system = "${system}";
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modules = [
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./configuration.nix
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./lagarto-hun.nix
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./no-compressed.nix
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];
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};
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# FPGA Lagarto Ox CPU
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lagarto-ox = nixosSystem {
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specialArgs = { inherit self; };
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system = "${system}";
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modules = [
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./configuration.nix
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./lagarto-ox.nix
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./no-compressed.nix
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];
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};
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};
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# A development shell with QEMU ready to boot the RISC-V system in an x86
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# machine.
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devShells.x86_64-linux.qemu-lagarto-hun =
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let
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nixosconf = self.nixosConfigurations.qemu-nc;
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syspkgs = nixosconf.pkgs;
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toplevel = nixosconf.config.system.build.toplevel;
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in syspkgs.mkShell {
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pname = "qemu-shell";
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nativeBuildInputs = with syspkgs; [ qemu e2fsprogs ];
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# Here we tell the run script where to find the system
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NIXOS_SYSTEM_TOPLEVEL = toplevel;
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OPENSBI = syspkgs.opensbi-uboot;
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};
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devShells.x86_64-linux.lagarto-hun =
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let
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nixosconf = self.nixosConfigurations.lagarto-hun;
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syspkgs = nixosconf.pkgs;
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build = nixosconf.config.system.build;
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in syspkgs.mkShell {
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pname = "lagarto-hun-shell";
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COMMIT = if self ? rev then self.rev else "dirty";
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TOPLEVEL = build.toplevel;
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OPENSBI = syspkgs.opensbi;
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KERNEL = build.kernel;
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INITRD = build.initialRamdisk;
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ROOTFS = build.sdImage;
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UBOOT_ENV = syspkgs.uboot-env;
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shellHook = ''
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echo "Here are the current system pieces:"
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echo " COMMIT = $COMMIT"
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echo " TOPLEVEL = $TOPLEVEL"
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echo " KERNEL = $KERNEL"
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echo " OPENSBI = $OPENSBI"
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echo " INITRD = $INITRD"
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echo " ROOTFS = $ROOTFS"
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echo " UBOOT_ENV = $UBOOT_ENV"
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'';
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};
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devShells.x86_64-linux.lagarto-ox =
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let
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nixosconf = self.nixosConfigurations.lagarto-ox;
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syspkgs = nixosconf.pkgs;
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build = nixosconf.config.system.build;
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in syspkgs.mkShell rec {
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pname = "lagarto-ox-shell";
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COMMIT = if self ? rev then self.rev else "dirty";
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TOPLEVEL = build.toplevel;
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OPENSBI = syspkgs.opensbi;
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KERNEL = build.kernel;
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INITRD = build.initialRamdisk;
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ROOTFS = build.sdImage;
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UBOOT_ENV = syspkgs.uboot-env;
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BITSTREAM = syspkgs.bitstream;
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BOOTROM = syspkgs.bootrom;
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GCROOT = mkRoots syspkgs [
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syspkgs.stdenv KERNEL OPENSBI syspkgs.riscv-tools
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];
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shellHook = ''
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echo "Here are the current system pieces:"
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echo " COMMIT = $COMMIT"
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echo " TOPLEVEL = $TOPLEVEL"
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echo " KERNEL = $KERNEL"
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echo " OPENSBI = $OPENSBI"
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echo " INITRD = $INITRD"
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echo " ROOTFS = $ROOTFS"
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echo " UBOOT_ENV = $UBOOT_ENV"
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echo " BITSTREAM = $BITSTREAM"
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echo " BOOTROM = $BOOTROM"
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echo " GCROOT = $GCROOT"
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'';
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};
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devShells.x86_64-linux.lagarto-ox-rd =
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let
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nixosconf = self.nixosConfigurations.lagarto-ox;
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syspkgs = nixosconf.pkgs;
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in self.outputs.devShells.x86_64-linux.lagarto-ox.overrideAttrs (old:{
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TOPLEVEL = "";
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ROOTFS = "";
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GCROOT = mkRoots syspkgs [ syspkgs.stdenv old.OPENSBI ];
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});
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devShells.x86_64-linux.default =
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self.outputs.devShells.x86_64-linux.lagarto-ox-rd;
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};
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}
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