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author | Jesper Nilsson <jesper.nilsson@axis.com> | 2007-11-29 17:58:06 +0100 |
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committer | Jesper Nilsson <jesper.nilsson@axis.com> | 2008-02-08 11:06:24 +0100 |
commit | 0c2efc4848984ed38753d48990f0f0c72af56ba9 (patch) | |
tree | 44616bd1241c33cb4d32e43c92a6ebb2205cd596 /include/asm-cris/axisflashmap.h | |
parent | e908dfc3c08d684b115f6fbd3740c6b77e0ddaf8 (diff) | |
download | op-kernel-dev-0c2efc4848984ed38753d48990f0f0c72af56ba9.zip op-kernel-dev-0c2efc4848984ed38753d48990f0f0c72af56ba9.tar.gz |
CRIS: Merge axisflashmap.h with Axis internal changes.
- 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.
Diffstat (limited to 'include/asm-cris/axisflashmap.h')
-rw-r--r-- | 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 |