48 lines
1.0 KiB
Nix
48 lines
1.0 KiB
Nix
{
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stdenv,
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nasm,
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qemu,
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...
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}: let
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bootImg = "boot";
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in
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stdenv.mkDerivation {
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pname = "bootler";
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version = "0.1.0";
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src = ./.;
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buildPhase = ''
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${nasm}/bin/nasm boot.asm -o boot.bin
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${nasm}/bin/nasm kernel.asm -o kernel.bin
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dd if=/dev/zero of=${bootImg} bs=512 count=2
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dd if=boot.bin of=${bootImg} conv=notrunc
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dd if=kernel.bin of=${bootImg} bs=512 seek=1 conv=notrunc
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'';
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installPhase = ''
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mkdir -p $out/bin
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cp ${bootImg} $out/bin
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# create emulation binary
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cat<<EOF>$out/bin/bootler
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#!/usr/bin/env bash
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# create temp dir
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mkdir -p ./.bootler
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cp $(echo $out)/bin/${bootImg} ./.bootler/${bootImg}
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chmod a+w ./.bootler/${bootImg}
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# run image
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${qemu}/bin/qemu-system-x86_64 \
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-nographic \
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-drive file=./.bootler/${bootImg},format=raw,index=0,media=disk
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# clean up
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rm ./.bootler -r
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EOF
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chmod +x $out/bin/${bootImg}
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chmod +x $out/bin/bootler
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'';
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}
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