patch-2.4.2 linux/include/asm-cris/axisflashmap.h

• Lines: 60
• Date: Thu Feb 8 16:32:44 2001
• Orig file: v2.4.1/linux/include/asm-cris/axisflashmap.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.1/linux/include/asm-cris/axisflashmap.h linux/include/asm-cris/axisflashmap.h
@@ -0,0 +1,59 @@
+#ifndef __ASM_AXISFLASHMAP_H
+#define __ASM_AXISFLASHMAP_H
+
+/* Bootblock parameters are stored at 0xc000 and has the FLASH_BOOT_MAGIC 
+ * as start, it ends with 0xFFFFFFFF */
+#define FLASH_BOOT_MAGIC 0xbeefcace
+#define BOOTPARAM_OFFSET 0xc000
+/* apps/bootblocktool is used to read and write the parameters,
+ * and it has nothing to do with the partition table. 
+ */
+
+
+/* the partitiontable consists of some "jump over" code, a head and
+ * then the actual entries.
+ * tools/mkptable is used to generate the ptable. 
+ */
+
+/* The partition table start with kod to "jump over" it: */
+#define PARTITIONTABLE_CODE_START { \
+ 0x0f, 0x05, /* nop 0 */\
+ 0x25, 0xf0, /* di  2 */\
+ 0xed, 0xff  /* ba  4 */ }
+
+/* The actual offset depend on the number of entries */
+#define PARTITIONTABLE_CODE_END { \
+ 0x00, 0x00, /* ba offset 6 */\
+ 0x0f, 0x0f  /* nop 8 */}
+
+#define PARTITION_TABLE_OFFSET 10
+#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 */
+};
+
+/* 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 future1;
+	__u32 future2;
+	__u32 future3;
+};
+/* ended by an end marker: */
+#define PARTITIONTABLE_END_MARKER 0xFFFFFFFF
+
+/*#define PARTITION_TYPE_RESCUE 0x0000?*/  /* Not used, maybe it should? */
+#define PARTITION_TYPE_PARAM  0x0001 /* Hmm.. */
+#define PARTITION_TYPE_KERNEL 0x0002
+#define PARTITION_TYPE_JFFS   0x0003
+
+#endif