From f59eab75d2bb20e44aff84ccadf65e4024db6eb4 Mon Sep 17 00:00:00 2001
From: Tuomas Tynkkynen <tuomas@tuxera.com>
Date: Wed, 14 Mar 2018 17:37:49 +0200
Subject: [PATCH] edk2, OVMF: Build on aarch64

And also build in parallel.

I don't understand why we manually tediously link every single directory
from the source, but I don't want to investigate too much.
---
 .../virtualization/OVMF/default.nix           | 40 ++++++++++++++-----
 pkgs/development/compilers/edk2/default.nix   |  4 +-
 2 files changed, 33 insertions(+), 11 deletions(-)

diff --git a/pkgs/applications/virtualization/OVMF/default.nix b/pkgs/applications/virtualization/OVMF/default.nix
index dca29e28cbb2..ee4ea4346e4a 100644
--- a/pkgs/applications/virtualization/OVMF/default.nix
+++ b/pkgs/applications/virtualization/OVMF/default.nix
@@ -2,10 +2,12 @@
 
 let
 
-  targetArch = if stdenv.isi686 then
-    "Ia32"
+  projectDscPath = if stdenv.isi686 then
+    "OvmfPkg/OvmfPkgIa32.dsc"
   else if stdenv.isx86_64 then
-    "X64"
+    "OvmfPkg/OvmfPkgX64.dsc"
+  else if stdenv.isAarch64 then
+    "ArmVirtPkg/ArmVirtQemu.dsc"
   else
     throw "Unsupported architecture";
 
@@ -14,7 +16,7 @@ let
   src = edk2.src;
 in
 
-stdenv.mkDerivation (edk2.setup "OvmfPkg/OvmfPkg${targetArch}.dsc" {
+stdenv.mkDerivation (edk2.setup projectDscPath {
   name = "OVMF-${version}";
 
   inherit src;
@@ -36,7 +38,13 @@ stdenv.mkDerivation (edk2.setup "OvmfPkg/OvmfPkg${targetArch}.dsc" {
       ln -sv "$file" .
     done
 
-    ${if seabios != null then ''
+    ${if stdenv.isAarch64 then ''
+      ln -sv ${src}/ArmPkg .
+      ln -sv ${src}/ArmPlatformPkg .
+      ln -sv ${src}/ArmVirtPkg .
+      ln -sv ${src}/EmbeddedPkg .
+      ln -sv ${src}/OvmfPkg .
+    '' else if seabios != null then ''
         cp -r ${src}/OvmfPkg .
         chmod +w OvmfPkg/Csm/Csm16
         cp ${seabios}/Csm16.bin OvmfPkg/Csm/Csm16/Csm16.bin
@@ -50,13 +58,25 @@ stdenv.mkDerivation (edk2.setup "OvmfPkg/OvmfPkg${targetArch}.dsc" {
     ''}
   '';
 
-  buildPhase = if seabios == null then ''
-      build ${lib.optionalString secureBoot "-DSECURE_BOOT_ENABLE=TRUE"}
+  buildPhase = if stdenv.isAarch64 then ''
+      build -n $NIX_BUILD_CORES
+    '' else if seabios == null then ''
+      build -n $NIX_BUILD_CORES ${lib.optionalString secureBoot "-DSECURE_BOOT_ENABLE=TRUE"}
     '' else ''
-      build -D CSM_ENABLE -D FD_SIZE_2MB ${lib.optionalString secureBoot "-DSECURE_BOOT_ENABLE=TRUE"}
+      build -n $NIX_BUILD_CORES -D CSM_ENABLE -D FD_SIZE_2MB ${lib.optionalString secureBoot "-DSECURE_BOOT_ENABLE=TRUE"}
     '';
 
-  postFixup = ''
+  postFixup = if stdenv.isAarch64 then ''
+    mkdir -vp $fd/FV
+    mkdir -vp $fd/AAVMF
+    mv -v $out/FV/QEMU_{EFI,VARS}.fd $fd/FV
+
+    # Uses Fedora dir layout: https://src.fedoraproject.org/cgit/rpms/edk2.git/tree/edk2.spec
+    # FIXME: why is it different from Debian dir layout? https://anonscm.debian.org/cgit/pkg-qemu/edk2.git/tree/debian/rules
+    dd of=$fd/AAVMF/QEMU_EFI-pflash.raw       if=/dev/zero bs=1M    count=64
+    dd of=$fd/AAVMF/QEMU_EFI-pflash.raw       if=$fd/FV/QEMU_EFI.fd conv=notrunc
+    dd of=$fd/AAVMF/vars-template-pflash.raw if=/dev/zero bs=1M    count=64
+  '' else ''
     mkdir -vp $OUTPUT_FD/FV
     mv -v $out/FV/OVMF{,_CODE,_VARS}.fd $OUTPUT_FD/FV
   '';
@@ -67,6 +87,6 @@ stdenv.mkDerivation (edk2.setup "OvmfPkg/OvmfPkg${targetArch}.dsc" {
     description = "Sample UEFI firmware for QEMU and KVM";
     homepage = https://sourceforge.net/apps/mediawiki/tianocore/index.php?title=OVMF;
     license = stdenv.lib.licenses.bsd2;
-    platforms = ["x86_64-linux" "i686-linux"];
+    platforms = ["x86_64-linux" "i686-linux" "aarch64-linux"];
   };
 })
diff --git a/pkgs/development/compilers/edk2/default.nix b/pkgs/development/compilers/edk2/default.nix
index 5cc4846d3ae5..1dc4430dc6a7 100644
--- a/pkgs/development/compilers/edk2/default.nix
+++ b/pkgs/development/compilers/edk2/default.nix
@@ -7,6 +7,8 @@ targetArch = if stdenv.isi686 then
   "IA32"
 else if stdenv.isx86_64 then
   "X64"
+else if stdenv.isAarch64 then
+  "AARCH64"
 else
   throw "Unsupported architecture";
 
@@ -48,7 +50,7 @@ edk2 = stdenv.mkDerivation {
     homepage = https://sourceforge.net/projects/edk2/;
     license = stdenv.lib.licenses.bsd2;
     branch = "UDK2017";
-    platforms = ["x86_64-linux" "i686-linux"];
+    platforms = ["x86_64-linux" "i686-linux" "aarch64-linux"];
   };
 
   passthru = {