[PATCH 10/47] Merge axisflashmap.h with Axis internal changes.

Jesper Nilsson
2007-12-06T12:45:02Z

- Add partition table struct to be used to parse partition table in flash.
- Add JFFS2 as a type, and add readoly flag.
- Improve some comments.
- Lindent has been run, fixing whitespace and formatting issues.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
---
include/asm-cris/axisflashmap.h | 39 +++++++++++++++++++++++++++------------
1 files changed, 27 insertions(+), 12 deletions(-)

diff --git a/include/asm-cris/axisflashmap.h b/include/asm-cris/axisflashmap.h
index 7a8d311..015ca54 100644
--- a/include/asm-cris/axisflashmap.h
+++ b/include/asm-cris/axisflashmap.h
@@ -10,23 +10,23 @@
*/

#define PARTITION_TABLE_OFFSET 10
-#define PARTITION_TABLE_MAGIC 0xbeef /* Not a good magic */
+#define PARTITION_TABLE_MAGIC 0xbeef /* Not a good magic */

/* The partitiontable_head is located at offset +10: */
struct partitiontable_head {
- __u16 magic; /* PARTITION_TABLE_MAGIC */
- __u16 size; /* Length of ptable block (not header) */
- __u32 checksum; /* simple longword sum */
+ __u16 magic; /* PARTITION_TABLE_MAGIC */
+ __u16 size; /* Length of ptable block (entries + end marker) */
+ __u32 checksum; /* simple longword sum, over entries + end marker */
};

/* And followed by partition table entries */
struct partitiontable_entry {
- __u32 offset; /* Offset is relative to the sector the ptable is in */
- __u32 size;
- __u32 checksum; /* simple longword sum */
- __u16 type;
- __u16 flags; /* bit 0: ro/rw = 1/0 */
- __u32 future0; /* 16 bytes reserved for future use */
+ __u32 offset; /* relative to the sector the ptable is in */
+ __u32 size; /* in bytes */
+ __u32 checksum; /* simple longword sum */
+ __u16 type; /* see type codes below */
+ __u16 flags; /* bit 0: ro/rw = 1/0 */
+ __u32 future0; /* 16 bytes reserved for future use */
__u32 future1;
__u32 future2;
__u32 future3;
@@ -35,12 +35,27 @@ struct partitiontable_entry {
#define PARTITIONTABLE_END_MARKER 0xFFFFFFFF
#define PARTITIONTABLE_END_MARKER_SIZE 4

-/*#define PARTITION_TYPE_RESCUE 0x0000?*/ /* Not used, maybe it should? */
+#define PARTITIONTABLE_END_PAD 10
+
+/* Complete structure for whole partition table */
+/* note that table may end before CONFIG_ETRAX_PTABLE_ENTRIES by setting
+ * offset of the last entry + 1 to PARTITIONTABLE_END_MARKER.
+ */
+struct partitiontable {
+ __u8 skip[PARTITION_TABLE_OFFSET];
+ struct partitiontable_head head;
+ struct partitiontable_entry entries[];
+};
+
#define PARTITION_TYPE_PARAM 0x0001
#define PARTITION_TYPE_KERNEL 0x0002
#define PARTITION_TYPE_JFFS 0x0003
+#define PARTITION_TYPE_JFFS2 0x0000
+
+#define PARTITION_FLAGS_READONLY_MASK 0x0001
+#define PARTITION_FLAGS_READONLY 0x0001

/* The master mtd for the entire flash. */
-extern struct mtd_info* axisflash_mtd;
+extern struct mtd_info *axisflash_mtd;

#endif
--
1.5.3.6.970.gd25430