2 files changed, 58 insertions, 0 deletions
diff --git a/pkgs/default.nix b/pkgs/default.nix
index 6d36ce0..8bd9e2c 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -12,6 +12,7 @@ in {
   gem5 = callPackage ./gem5.nix {gem5ISA = "x86";};
   git-aliases = callPackage ./git-aliases.nix {};
   increment-zone-serials = callPackage ./increment-zone-serials {};
+  ipxe = callPackage ./ipxe/default.nix {};
   kbuild-standalone = callPackage ./kbuild-standalone.nix {};
   mssql-tools = callPackage ./mssql-tools.nix {};
   oregano = callPackage ./oregano {};
diff --git a/pkgs/ipxe/default.nix b/pkgs/ipxe/default.nix
new file mode 100644
index 0000000..390a271
--- /dev/null
+++ b/pkgs/ipxe/default.nix
@@ -0,0 +1,57 @@
+{
+  ipxe,
+  lib,
+  writeText,
+  stage2-url ? "http://[fe80::b007:b007]/\${netX/mac}/stage2.ipxe",
+}: {
+  minimal = ipxe.override {
+    embedScript = "..."; # TODO
+    pname = "ipxe-minimal";
+    enabledOptions = [];
+
+    preConfigure = ''
+      sed -i \
+        '/^#define\s\+\<[A-Z0-9_]\+\>\s*\(\/\*.*\*\/\)\?$/ { /CONFIG_GENERAL_H/! { s/^/\/\// } }' \
+        src/config/general.h
+    '';
+  };
+
+  with-script =
+    (ipxe.override {
+      embedScript = writeText "ipxe-shim-script" ''
+        #!ipxe
+        echo stage1: chainloading from ${stage2-url}...
+        ifconf --configurator ipv6 --timeout 1000 || goto try-v4
+        goto try-boot
+        :try-v4
+        echo stage1: failed to bring IPv6 up, trying DHCP...
+        ifconf --configurator dhcp --timeout 1000 || goto fail
+        :try-boot
+        isset ''${netX/gateway}  && isset ''${syslog}  || set syslog  ''${netX/gateway}
+        isset ''${netX/gateway6} && isset ''${syslog6} || set syslog6 ''${netX/gateway6}
+        show syslog
+        show syslog6
+        echo stage1: network up
+        route ||
+        chain --timeout 10000 --replace ${stage2-url} ||
+        :fail
+        echo stage1: failed, rebooting in 5s...
+        sleep 5
+        reboot --warm
+      '';
+    }).overrideAttrs (finalAtrs: prevAttrs: {
+      pname = "ipxe-with-embedded-script";
+      enabledOptions = [
+        "DOWNLOAD_PROTO_HTTP"
+        "NET_PROTO_IPV4"
+        "NET_PROTO_IPV6"
+        "REBOOT_CMD"
+      ];
+
+      preConfigure = ''
+        sed -i \
+          's/^\s*#define\s\+LOG_LEVEL\>.*$/#define LOG_LEVEL LOG_ALL/; /#define\s\+CONSOLE_SYSLOG\>/ { s/\/\/#/#/; }' \
+          src/config/console.h
+      '';
+    });
+}