nixpkgs/pkgs/os-specific/linux/firmware/amd-ucode/default.nix

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{ stdenv, fetchurl }:
stdenv.mkDerivation rec {
name = "amd-ucode-2012-01-17";
src = fetchurl {
url = "http://www.amd64.org/pub/microcode/${name}.tar";
sha256 = "0mqnbs87khv6p874cbyf9nb8i4gc592ws67lyzhc4chmwvc9ln47";
};
installPhase = ''
mkdir -p $out/amd-ucode
mv microcode_amd_fam15h.bin microcode_amd.bin $out/amd-ucode/
'';
meta = {
description = "AMD Processor Microcode Patch";
homepage = "http://www.amd64.org/support/microcode.html";
license = "non-free";
};
}