automake commit without merge history

2010-05-06 11:34:04 +05:30 · 2010-05-06 11:34:04 +05:30 · 8c41176882
commit 8c41176882
parent 265d68cd10
810 changed files with 4980 additions and 2508 deletions
--- a/grub-core/partmap/acorn.c
+++ b/grub-core/partmap/acorn.c
@ -0,0 +1,145 @@
+/* acorn.c - Read Linux/ADFS partition tables.  */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2005,2007  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/disk.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/partition.h>
+#include <grub/acorn_filecore.h>
+
+#define LINUX_NATIVE_MAGIC grub_cpu_to_le32 (0xdeafa1de)
+#define LINUX_SWAP_MAGIC   grub_cpu_to_le32 (0xdeafab1e)
+#define LINUX_MAP_ENTRIES  (512 / 12)
+
+#define NONADFS_PARTITION_TYPE_LINUX 9
+#define NONADFS_PARTITION_TYPE_MASK 15
+
+struct grub_acorn_boot_block
+{
+  grub_uint8_t misc[0x1C0];
+  struct grub_filecore_disc_record disc_record;
+  grub_uint8_t flags;
+  grub_uint16_t start_cylinder;
+  grub_uint8_t checksum;
+} __attribute__ ((packed, aligned));
+
+struct linux_part
+{
+  grub_uint32_t magic;
+  grub_uint32_t start;
+  grub_uint32_t size;
+};
+
+static struct grub_partition_map grub_acorn_partition_map;
+
+static grub_err_t
+acorn_partition_map_find (grub_disk_t disk, struct linux_part *m,
+			  grub_disk_addr_t *sector)
+{
+  struct grub_acorn_boot_block boot;
+  grub_err_t err;
+  unsigned int checksum = 0;
+  unsigned int heads;
+  unsigned int sectors_per_cylinder;
+  int i;
+
+  err = grub_disk_read (disk, 0xC00 / GRUB_DISK_SECTOR_SIZE, 0,
+			sizeof (struct grub_acorn_boot_block),
+			&boot);
+  if (err)
+    return err;
+
+  if ((boot.flags & NONADFS_PARTITION_TYPE_MASK) != NONADFS_PARTITION_TYPE_LINUX)
+    goto fail;
+
+  for (i = 0; i != 0x1ff; ++i)
+    checksum = (checksum & 0xff) + (checksum >> 8) + boot.misc[i];
+
+  if ((grub_uint8_t) checksum != boot.checksum)
+    goto fail;
+
+  heads = (boot.disc_record.heads
+		    + ((boot.disc_record.lowsector >> 6) & 1));
+  sectors_per_cylinder = boot.disc_record.secspertrack * heads;
+  *sector = grub_le_to_cpu16 (boot.start_cylinder) * sectors_per_cylinder;
+
+  return grub_disk_read (disk, *sector, 0,
+			 sizeof (struct linux_part) * LINUX_MAP_ENTRIES,
+			 m);
+
+fail:
+  return grub_error (GRUB_ERR_BAD_PART_TABLE,
+		     "Linux/ADFS partition map not found");
+
+}
+
+
+static grub_err_t
+acorn_partition_map_iterate (grub_disk_t disk,
+			     int (*hook) (grub_disk_t disk,
+					  const grub_partition_t partition))
+{
+  struct grub_partition part;
+  struct linux_part map[LINUX_MAP_ENTRIES];
+  int i;
+  grub_disk_addr_t sector = 0;
+  grub_err_t err;
+
+  err = acorn_partition_map_find (disk, map, &sector);
+  if (err)
+    return err;
+
+  part.partmap = &grub_acorn_partition_map;
+
+  for (i = 0; i != LINUX_MAP_ENTRIES; ++i)
+    {
+      if (map[i].magic != LINUX_NATIVE_MAGIC
+	  && map[i].magic != LINUX_SWAP_MAGIC)
+	return GRUB_ERR_NONE;
+
+      part.start = sector + map[i].start;
+      part.len = map[i].size;
+      part.offset = 6;
+      part.number = part.index = i;
+
+      if (hook (disk, &part))
+	return grub_errno;
+    }
+
+  return GRUB_ERR_NONE;
+}
+
+
+
+/* Partition map type.  */
+static struct grub_partition_map grub_acorn_partition_map =
+{
+  .name = "acorn",
+  .iterate = acorn_partition_map_iterate,
+};
+
+GRUB_MOD_INIT(part_acorn)
+{
+  grub_partition_map_register (&grub_acorn_partition_map);
+}
+
+GRUB_MOD_FINI(part_acorn)
+{
+  grub_partition_map_unregister (&grub_acorn_partition_map);
+}