nixos/installer/cd-dvd/iso-image: Allow booting on CHRP machines

nixos/lib/make-iso9660-image.nix

@@ -41,6 +41,9 @@
   # Whether this should be an efi-bootable El-Torito CD.
   efiBootable ? false,
 
+  # Whether this should be a CHRP-compatible CD.
+  chrpBootable ? false,
+
   # Whether this should be an hybrid CD (bootable from USB as well as CD).
   usbBootable ? false,
 
@@ -50,6 +53,12 @@
   # The path (in the ISO file system) of the efi boot image.
   efiBootImage ? "",
 
+  # The path (in the ISO file system) to bless for booting on New World ROM PowerMacs (path that "\\" in Open Firmware will resolve to)
+  tbxiBlessDir ? "",
+
+  # The file in tbxiBlessDir to bless as type tbxi
+  tbxiBlessFile ? "",
+
   # The path (outside the ISO file system) of the isohybrid-mbr image.
   isohybridMbrImage ? "",
 
@@ -63,6 +72,9 @@
 
 assert bootable -> bootImage != "";
 assert efiBootable -> efiBootImage != "";
+assert
+  (tbxiBlessDir != "" || tbxiBlessFile != "")
+  -> (chrpBootable && tbxiBlessDir != "" && tbxiBlessFile != "");
 assert usbBootable -> isohybridMbrImage != "";
 
 let
@@ -97,6 +109,9 @@ stdenv.mkDerivation {
     volumeID
     efiBootImage
     efiBootable
+    chrpBootable
+    tbxiBlessDir
+    tbxiBlessFile
     isohybridMbrImage
     usbBootable
     ;

nixos/lib/make-iso9660-image.sh

@@ -53,6 +53,18 @@ if test -n "$efiBootable"; then
                   -isohybrid-gpt-basdat"
 fi
 
+if test -n "$chrpBootable"; then
+    chrpBootFlags="-sysid PPC -chrp-boot-part"
+
+    if [ -n "$tbxiBlessDir" -a -n "$tbxiBlessFile" ]; then
+        chrpBootFlags="-hfsplus
+                       -apm-block-size 2048
+                       -hfs-bless-by p $tbxiBlessDir
+                       -hfsplus-file-creator-type chrp tbxi $tbxiBlessDir/$tbxiBlessFile
+                       $chrpBootFlags"
+    fi
+fi
+
 touch pathlist
 
 
@@ -113,6 +125,7 @@ xorriso="xorriso
  ${isoBootFlags}
  ${usbBootFlags}
  ${efiBootFlags}
+ ${chrpBootFlags}
  -r
  -path-list pathlist
  --sort-weight 0 /