* util/grub-install.in: Support dd'in into PreP partition.

* util/grub-probe.c (probe): Support discovering partition type.
	(main): Support -t msdos_parttype.

	Also-By: Vladimir Serbinenko <phcoder@gmail.com>

	Also-By: pfsmorigo <>

ChangeLog

@@ -1,3 +1,11 @@
+2012-01-23  Paulo de Rezende Pinatti <ppinatti@linux.vnet.ibm.com>
+2012-01-23  Vladimir Serbinenko  <phcoder@gmail.com>
+2012-01-23  pfsmorigo
+
+	* util/grub-install.in: Support dd'in into PreP partition.
+	* util/grub-probe.c (probe): Support discovering partition type.
+	(main): Support -t msdos_parttype.
+
 2012-01-23  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* grub-core/normal/crypto.c (grub_crypto_autoload): Prevent

util/grub-install.in

@@ -274,7 +274,8 @@ if test "x$install_device" = x && ([ "${target_cpu}-${platform}" = "i386-pc" ] \
 fi
 
 if ! ([ "${target_cpu}-${platform}" = "i386-pc" ] \
-    || [ "${target_cpu}-${platform}" = "sparc64-ieee1275" ]); then
+    || [ "${target_cpu}-${platform}" = "sparc64-ieee1275" ] \
+    || [ "${target_cpu}-${platform}" = "powerpc-ieee1275" ]); then
     install_device=
 fi
 
@@ -653,6 +654,29 @@ elif [ "${target_cpu}-${platform}" = "i386-ieee1275" ] || [ "${target_cpu}-${pla
 
         # Point boot-device at the new grub install
 	boot_device="$ofpath:$partno,"`"$grub_mkrelpath" "${grubdir}/core.${imgext}" | sed 's,/,\\\\,g'`
+
+        # If a install device is defined, copy the core.elf to PReP partition. 
+	if  [ "${target_cpu}-${platform}" = "powerpc-ieee1275" ] \
+	    && [ -n "${install_device}" ]; then
+            if [ "$("${grub_probe}" -m "${device_map}" -d "${install_device}" -t msdos_parttype)" != "41" ]; then
+		echo "The chosen partition is not a PReP partition."
+		exit 1
+            fi
+
+            if [ "$(file -s "${install_device}" -b | awk '{ print $1 }')" = ELF ] || [ $(cmp /dev/zero "${install_device}" &>/dev/null) ]; then
+            # Change boot device to the harddisk root
+		boot_device="$ofpath"
+		dd if="${grubdir}/core.${imgext}" of="${install_device}" status=noxfer || {
+		    echo "Failed to copy Grub to the PReP partition."
+		    exit 1
+		}
+            else
+		echo "The PReP partition is not empty. If you are sure you want to use it, run dd to clear it:"
+		echo "  dd if=/dev/zero of=${install_device}"
+		exit 1
+            fi
+	fi
+
 	"$nvsetenv" boot-device "$boot_device" || {
 	    echo "$nvsetenv failed."
 	    echo "You will have to set boot-device manually.  At the Open Firmware prompt, type:"

util/grub-probe.c

@@ -64,7 +64,8 @@ enum {
   PRINT_BAREMETAL_HINT,
   PRINT_EFI_HINT,
   PRINT_ARC_HINT,
-  PRINT_COMPATIBILITY_HINT
+  PRINT_COMPATIBILITY_HINT,
+  PRINT_MSDOS_PARTTYPE
 };
 
 static int print = PRINT_FS;
@@ -544,6 +545,16 @@ probe (const char *path, char *device_name)
       goto end;
     }
 
+  if (print == PRINT_MSDOS_PARTTYPE)
+    {
+      if (dev->disk->partition
+	  && strcmp(dev->disk->partition->partmap->name, "msdos") == 0)
+        printf ("%02x", dev->disk->partition->msdostype);
+
+      printf ("\n");
+      goto end;
+    }
+
   fs = grub_fs_probe (dev);
   if (! fs)
     grub_util_error ("%s", _(grub_errmsg));
@@ -609,7 +620,7 @@ Probe device information for a given path (or device, if the -d option is given)
 \n\
   -d, --device              given argument is a system device, not a path\n\
   -m, --device-map=FILE     use FILE as the device map [default=%s]\n\
-  -t, --target=(fs|fs_uuid|fs_label|drive|device|partmap|abstraction|cryptodisk_uuid)\n\
+  -t, --target=(fs|fs_uuid|fs_label|drive|device|partmap|abstraction|cryptodisk_uuid|msdos_parttype)\n\
                             print filesystem module, GRUB drive, system device, partition map module, abstraction module or CRYPTO UUID [default=fs]\n\
   -h, --help                display this message and exit\n\
   -V, --version             print version information and exit\n\
@@ -670,6 +681,8 @@ main (int argc, char *argv[])
 	      print = PRINT_ABSTRACTION;
 	    else if (!strcmp (optarg, "cryptodisk_uuid"))
 	      print = PRINT_CRYPTODISK_UUID;
+	    else if (!strcmp (optarg, "msdos_parttype"))
+	      print = PRINT_MSDOS_PARTTYPE;
 	    else if (!strcmp (optarg, "hints_string"))
 	      print = PRINT_HINT_STR;
 	    else if (!strcmp (optarg, "bios_hints"))