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use nixpkgs 19.03

* too much breakage on nixos-unstable
* we should track upstream yosys/nextpnr more closely than nixpkgs does
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12032433ed
  1. 11
      README.md
  2. 48
      compilers/rust-riscv32i-crates.nix
  3. 68
      overlay.nix
  4. 2
      release.nix

11
README.md

@ -15,7 +15,14 @@ Softcore system-on-chip on the Lattice ECP5 Versa board, built with a 100% Veril
* 100MHz clock frequency.
* Runs a Rust "hello world" program.
Use nixpkgs unstable (known to work with ae71c13). Check https://nixbld.m-labs.hk/project/fpga for the status of the build with other nixpkgs versions.
Use nixpkgs 19.03. If you are unfamiliar with Nix and just installed it on another (non-NixOS) distribution, simply run:
```
$ nix-channel --remove nixpkgs
$ nix-channel --add https://nixos.org/channels/nixos-19.03 nixpkgs
$ nix-channel --update
```
Optional: set up the M-Labs key and binary substituter for Nix (otherwise Nix will recompile LLVM, rustc, etc. on your machine).
Create the file ``~/.config/nix/nix.conf`` with the following contents:
@ -27,6 +34,8 @@ trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDS
Run ``nix-build -A simplesoc_ecp5 release.nix``
You can also build manually and use your distribution's packages, but YMMV.
Bypass the ispCLOCK device using the jumpers on your board.
Create a ``versa.cfg`` file with:

48
compilers/rust-riscv32i-crates.nix

@ -1,29 +1,21 @@
{ stdenv, rustc, fetchFromGitHub }:
let
compiler-builtins-src = fetchFromGitHub {
owner = "rust-lang-nursery";
repo = "compiler-builtins";
rev = "0.1.12";
sha256 = "0hkssvrh952kcz7w7aws3pqr05barg3qppqpji641b35xpbg9gyg";
};
in
stdenv.mkDerivation {
name = "rust-riscv32i-crates";
src = rustc.src;
phases = [ "unpackPhase" "buildPhase" ];
buildPhase = ''
destdir=$out/lib/rustlib/riscv32i-unknown-none-elf/lib/
rustc="${rustc}/bin/rustc --out-dir ''${destdir} -L ''${destdir} --target riscv32i-unknown-none-elf -g -C opt-level=s --crate-type rlib"
{ stdenv, rustc }:
stdenv.mkDerivation {
name = "rust-riscv32i-crates";
src = rustc.src;
phases = [ "unpackPhase" "buildPhase" ];
buildPhase = ''
destdir=$out/lib/rustlib/riscv32i-unknown-none-elf/lib/
rustc="${rustc}/bin/rustc --out-dir ''${destdir} -L ''${destdir} --target riscv32i-unknown-none-elf -g -C opt-level=s --crate-type rlib"
mkdir -p ''${destdir}
export RUSTC_BOOTSTRAP=1
''${rustc} --crate-name core src/libcore/lib.rs
''${rustc} --crate-name compiler_builtins ${compiler-builtins-src}/src/lib.rs --cfg 'feature="compiler-builtins"' --cfg 'feature="mem"'
'';
# ''${rustc} --crate-name alloc src/liballoc/lib.rs
# ''${rustc} --crate-name libc ${./libc_mini.rs}
# ''${rustc} --crate-name unwind src/libunwind/lib.rs
# ''${rustc} --crate-name std src/libstd/lib.rs
# ''${rustc} -Cpanic=abort --crate-name panic_abort src/libpanic_abort/lib.rs
# ''${rustc} -Cpanic=unwind --crate-name panic_unwind src/libpanic_unwind/lib.rs --cfg llvm_libunwind
}
mkdir -p ''${destdir}
export RUSTC_BOOTSTRAP=1
''${rustc} --crate-name core src/libcore/lib.rs
''${rustc} --crate-name compiler_builtins src/libcompiler_builtins/src/lib.rs --cfg 'feature="compiler-builtins"' --cfg 'feature="mem"'
'';
# ''${rustc} --crate-name alloc src/liballoc/lib.rs
# ''${rustc} --crate-name libc ${./libc_mini.rs}
# ''${rustc} --crate-name unwind src/libunwind/lib.rs
# ''${rustc} --crate-name std src/libstd/lib.rs
# ''${rustc} -Cpanic=abort --crate-name panic_abort src/libpanic_abort/lib.rs
# ''${rustc} -Cpanic=unwind --crate-name panic_unwind src/libpanic_unwind/lib.rs --cfg llvm_libunwind
}

68
overlay.nix

@ -1,5 +1,73 @@
self: super:
rec {
yosys = super.yosys.overrideAttrs(oa: rec {
name = "yosys-${version}";
version = "2019-07-27";
srcs = [
(super.fetchFromGitHub {
owner = "yosyshq";
repo = "yosys";
rev = "6538671c84a12114a991d59569eede3e0d368758";
sha256 = "1l6v94a9vh9krmfsmd3v8l8xciwf028xvg93qf80s8a75djm7bc3";
name = "yosys";
})
# NOTE: the version of abc used here is synchronized with
# the one in the yosys Makefile of the version above;
# keep them the same for quality purposes.
(super.fetchFromGitHub {
owner = "berkeley-abc";
repo = "abc";
rev = "5776ad07e7247993976bffed4802a5737c456782";
sha256 = "1la4idmssg44rp6hd63sd5vybvs3vr14yzvwcg03ls37p39cslnl";
name = "yosys-abc";
})
];
buildInputs = oa.buildInputs ++ [ super.zlib ];
});
nextpnr = super.nextpnr.overrideAttrs(oa: rec {
name = "nextpnr-${version}";
version = "2019-07-22";
src = super.fetchFromGitHub {
owner = "yosyshq";
repo = "nextpnr";
rev = "ba050c21b94e816f9dd69f69b23ad5105858f401";
sha256 = "1wxsv1lcbi6bvv5vryvjz9mj530iva85wh6b6pvnfff2i4yc3p9q";
};
buildInputs = oa.buildInputs ++ [ super.eigen ];
cmakeFlags = oa.cmakeFlags ++ [ "-DUSE_OPENMP=ON" ];
});
icestorm = super.icestorm.overrideAttrs(oa: rec {
name = "icestorm-${version}";
version = "2019-07-03";
src = super.fetchFromGitHub {
owner = "cliffordwolf";
repo = "icestorm";
rev = "792cef084a751e32f541332feb4905f8e49e9943";
sha256 = "115qmgcz5ndw4z8ivk1cdlz6i2dzhq195gr8y4fjrjcb5jlacz23";
};
});
trellis = super.trellis.overrideAttrs(oa: rec {
name = "trellis-${version}";
version = "2019-07-18";
srcs = [
(super.fetchFromGitHub {
owner = "symbiflow";
repo = "prjtrellis";
rev = "b27c0da5d20a4c105fe9be2b5f8d859316613f44";
sha256 = "12jcs64agv5yhqq4zwjp2vd9y248608hz1gj187g1cfqrv0yc8d5";
name = "trellis";
})
(super.fetchFromGitHub {
owner = "symbiflow";
repo = "prjtrellis-db";
rev = "b4d626b6402c131e9a035470ffe4cf33ccbe7986";
sha256 = "0k26lq6c049ja8hhqcljwjb1y5k4gcici23l2n86gyp83jr03ilx";
name = "database";
})
];
});
llvm_7 = super.llvm_7.overrideAttrs(oa: {
name = oa.name + "-riscv";
cmakeFlags = oa.cmakeFlags ++ ["-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=RISCV"];

2
release.nix

@ -3,7 +3,7 @@ let
pkgs = import <nixpkgs> { overlays = [ (import ./overlay.nix) ]; };
hx = import ./default.nix { inherit pkgs; };
jobs = hx // {
inherit (pkgs) llvm_7 rustc cargo cargo-vendor;
inherit (pkgs) yosys nextpnr icestorm trellis llvm_7 rustc cargo cargo-vendor;
helloworld_ecp5 = import ./examples/helloworld_ecp5.nix { inherit pkgs hx; };
helloworld_kintex7 = import ./examples/helloworld_kintex7.nix { inherit pkgs hx; };

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