Update MTD to that of Linux 2.6.22.1

A lot changed in the Linux MTD code, since it was last ported from
Linux to U-Boot. This patch takes U-Boot NAND support to the level
of Linux 2.6.22.1 and will enable support for very large NAND devices
(4KB pages) and ease the compatibility between U-Boot and Linux
filesystems.

This patch is tested on two custom boards with PPC and ARM
processors running YAFFS in U-Boot and Linux using gcc-4.1.2
cross compilers.

MAKEALL ppc/arm has some issues:
 * DOC/OneNand/nand_spl is not building (I have not tried porting
   these parts, and since I do not have any HW and I am not familiar
   with this code/HW I think its best left to someone else.)

Except for the issues mentioned above, I have ported all drivers
necessary to run MAKEALL ppc/arm without errors and warnings. Many
drivers were trivial to port, but some were not so trivial. The
following drivers must be examined carefully and maybe rewritten to
some degree:
 cpu/ppc4xx/ndfc.c
 cpu/arm926ejs/davinci/nand.c
 board/delta/nand.c
 board/zylonite/nand.c

Signed-off-by: William Juul <william.juul@tandberg.com>
Signed-off-by: Stig Olsen <stig.olsen@tandberg.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>

1 files changed, 21 insertions, 72 deletions

diff --git a/include/linux/mtd/nftl.h b/include/linux/mtd/nftl.h
index b0337c34011..04963a52e5e 100644
--- a/include/linux/mtd/nftl.h
+++ b/include/linux/mtd/nftl.h
@@ -1,75 +1,16 @@
-
-/* Defines for NAND Flash Translation Layer  */
-/* (c) 1999 Machine Vision Holdings, Inc.    */
-/* Author: David Woodhouse <dwmw2@mvhi.com>  */
-/* $Id: nftl.h,v 1.10 2000/12/29 00:25:38 dwmw2 Exp $ */
+/*
+ * $Id: nftl.h,v 1.16 2004/06/30 14:49:00 dbrown Exp $
+ *
+ * (C) 1999-2003 David Woodhouse <dwmw2@infradead.org>
+ */
 
 #ifndef __MTD_NFTL_H__
 #define __MTD_NFTL_H__
 
-/* Block Control Information */
-
-struct nftl_bci {
-	unsigned char ECCSig[6];
-	__u8 Status;
-	__u8 Status1;
-}__attribute__((packed));
-
-/* Unit Control Information */
-
-struct nftl_uci0 {
-	__u16 VirtUnitNum;
-	__u16 ReplUnitNum;
-	__u16 SpareVirtUnitNum;
-	__u16 SpareReplUnitNum;
-} __attribute__((packed));
-
-struct nftl_uci1 {
-	__u32 WearInfo;
-	__u16 EraseMark;
-	__u16 EraseMark1;
-} __attribute__((packed));
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/blktrans.h>
 
-struct nftl_uci2 {
-	__u16 FoldMark;
-	__u16 FoldMark1;
-	__u32 unused;
-} __attribute__((packed));
-
-union nftl_uci {
-	struct nftl_uci0 a;
-	struct nftl_uci1 b;
-	struct nftl_uci2 c;
-};
-
-struct nftl_oob {
-	struct nftl_bci b;
-	union nftl_uci u;
-};
-
-/* NFTL Media Header */
-
-struct NFTLMediaHeader {
-	char DataOrgID[6];
-	__u16 NumEraseUnits;
-	__u16 FirstPhysicalEUN;
-	__u32 FormattedSize;
-	unsigned char UnitSizeFactor;
-} __attribute__((packed));
-
-#define MAX_ERASE_ZONES (8192 - 512)
-
-#define ERASE_MARK 0x3c69
-#define SECTOR_FREE 0xff
-#define SECTOR_USED 0x55
-#define SECTOR_IGNORE 0x11
-#define SECTOR_DELETED 0x00
-
-#define FOLD_MARK_IN_PROGRESS 0x5555
-
-#define ZONE_GOOD 0xff
-#define ZONE_BAD_ORIGINAL 0
-#define ZONE_BAD_MARKED 7
+#include <linux/mtd/nftl-user.h>
 
 /* these info are used in ReplUnitTable */
 #define BLOCK_NIL          0xffff /* last block of a chain */
@@ -78,7 +19,7 @@ struct NFTLMediaHeader {
 #define BLOCK_RESERVED     0xfffc /* bios block or bad block */
 
 struct NFTLrecord {
-	struct DiskOnChip *mtd;
+	struct mtd_blktrans_dev mbd;
 	__u16 MediaUnit, SpareMediaUnit;
 	__u32 EraseSize;
 	struct NFTLMediaHeader MediaHdr;
@@ -90,16 +31,24 @@ struct NFTLrecord {
 	__u16 lastEUN;                  /* should be suppressed */
 	__u16 numfreeEUNs;
 	__u16 LastFreeEUN;		/* To speed up finding a free EUN */
-	__u32 nr_sects;
 	int head,sect,cyl;
 	__u16 *EUNtable;		/* [numvunits]: First EUN for each virtual unit  */
 	__u16 *ReplUnitTable;		/* [numEUNs]: ReplUnitNumber for each */
-	unsigned int nb_blocks;		/* number of physical blocks */
-	unsigned int nb_boot_blocks;	/* number of blocks used by the bios */
+        unsigned int nb_blocks;		/* number of physical blocks */
+        unsigned int nb_boot_blocks;	/* number of blocks used by the bios */
+        struct erase_info instr;
+	struct nand_ecclayout oobinfo;
 };
 
+int NFTL_mount(struct NFTLrecord *s);
+int NFTL_formatblock(struct NFTLrecord *s, int block);
+
+#ifndef NFTL_MAJOR
+#define NFTL_MAJOR 93
+#endif
+
 #define MAX_NFTLS 16
-#define MAX_SECTORS_PER_UNIT 32
+#define MAX_SECTORS_PER_UNIT 64
 #define NFTL_PARTN_BITS 4
 
 #endif /* __MTD_NFTL_H__ */