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>
diff --git a/include/linux/mtd/doc2000.h b/include/linux/mtd/doc2000.h
index 29f6767..12de284 100644
--- a/include/linux/mtd/doc2000.h
+++ b/include/linux/mtd/doc2000.h
@@ -1,15 +1,23 @@
-
-/* Linux driver for Disk-On-Chip 2000 */
-/* (c) 1999 Machine Vision Holdings, Inc. */
-/* Author: David Woodhouse <dwmw2@mvhi.com> */
-/* $Id: doc2000.h,v 1.15 2001/09/19 00:22:15 dwmw2 Exp $ */
+/*
+ * Linux driver for Disk-On-Chip devices
+ *
+ * Copyright (C) 1999 Machine Vision Holdings, Inc.
+ * Copyright (C) 2001-2003 David Woodhouse <dwmw2@infradead.org>
+ * Copyright (C) 2002-2003 Greg Ungerer <gerg@snapgear.com>
+ * Copyright (C) 2002-2003 SnapGear Inc
+ *
+ * $Id: doc2000.h,v 1.25 2005/11/07 11:14:54 gleixner Exp $
+ *
+ * Released under GPL
+ */
#ifndef __MTD_DOC2000_H__
#define __MTD_DOC2000_H__
-struct DiskOnChip;
-
-#include <linux/mtd/nftl.h>
+#include <linux/mtd/mtd.h>
+#if 0
+#include <linux/mutex.h>
+#endif
#define DoC_Sig1 0
#define DoC_Sig2 1
@@ -40,10 +48,58 @@
#define DoC_Mil_CDSN_IO 0x0800
#define DoC_2k_CDSN_IO 0x1800
-#define ReadDOC_(adr, reg) ((volatile unsigned char)(*(volatile __u8 *)(((unsigned long)adr)+((reg)))))
-#define WriteDOC_(d, adr, reg) do{ *(volatile __u8 *)(((unsigned long)adr)+((reg))) = (__u8)d; eieio();} while(0)
+#define DoC_Mplus_NOP 0x1002
+#define DoC_Mplus_AliasResolution 0x1004
+#define DoC_Mplus_DOCControl 0x1006
+#define DoC_Mplus_AccessStatus 0x1008
+#define DoC_Mplus_DeviceSelect 0x1008
+#define DoC_Mplus_Configuration 0x100a
+#define DoC_Mplus_OutputControl 0x100c
+#define DoC_Mplus_FlashControl 0x1020
+#define DoC_Mplus_FlashSelect 0x1022
+#define DoC_Mplus_FlashCmd 0x1024
+#define DoC_Mplus_FlashAddress 0x1026
+#define DoC_Mplus_FlashData0 0x1028
+#define DoC_Mplus_FlashData1 0x1029
+#define DoC_Mplus_ReadPipeInit 0x102a
+#define DoC_Mplus_LastDataRead 0x102c
+#define DoC_Mplus_LastDataRead1 0x102d
+#define DoC_Mplus_WritePipeTerm 0x102e
+#define DoC_Mplus_ECCSyndrome0 0x1040
+#define DoC_Mplus_ECCSyndrome1 0x1041
+#define DoC_Mplus_ECCSyndrome2 0x1042
+#define DoC_Mplus_ECCSyndrome3 0x1043
+#define DoC_Mplus_ECCSyndrome4 0x1044
+#define DoC_Mplus_ECCSyndrome5 0x1045
+#define DoC_Mplus_ECCConf 0x1046
+#define DoC_Mplus_Toggle 0x1046
+#define DoC_Mplus_DownloadStatus 0x1074
+#define DoC_Mplus_CtrlConfirm 0x1076
+#define DoC_Mplus_Power 0x1fff
-#define DOC_IOREMAP_LEN 0x4000
+/* How to access the device?
+ * On ARM, it'll be mmap'd directly with 32-bit wide accesses.
+ * On PPC, it's mmap'd and 16-bit wide.
+ * Others use readb/writeb
+ */
+#if defined(__arm__)
+#define ReadDOC_(adr, reg) ((unsigned char)(*(volatile __u32 *)(((unsigned long)adr)+((reg)<<2))))
+#define WriteDOC_(d, adr, reg) do{ *(volatile __u32 *)(((unsigned long)adr)+((reg)<<2)) = (__u32)d; wmb();} while(0)
+#define DOC_IOREMAP_LEN 0x8000
+#elif defined(__ppc__)
+#define ReadDOC_(adr, reg) ((unsigned char)(*(volatile __u16 *)(((unsigned long)adr)+((reg)<<1))))
+#define WriteDOC_(d, adr, reg) do{ *(volatile __u16 *)(((unsigned long)adr)+((reg)<<1)) = (__u16)d; wmb();} while(0)
+#define DOC_IOREMAP_LEN 0x4000
+#else
+#define ReadDOC_(adr, reg) readb((void __iomem *)(adr) + (reg))
+#define WriteDOC_(d, adr, reg) writeb(d, (void __iomem *)(adr) + (reg))
+#define DOC_IOREMAP_LEN 0x2000
+
+#endif
+
+#if defined(__i386__) || defined(__x86_64__)
+#define USE_MEMCPY
+#endif
/* These are provided to directly use the DoC_xxx defines */
#define ReadDOC(adr, reg) ReadDOC_(adr,DoC_##reg)
@@ -54,14 +110,21 @@
#define DOC_MODE_RESERVED1 2
#define DOC_MODE_RESERVED2 3
-#define DOC_MODE_MDWREN 4
#define DOC_MODE_CLR_ERR 0x80
+#define DOC_MODE_RST_LAT 0x10
+#define DOC_MODE_BDECT 0x08
+#define DOC_MODE_MDWREN 0x04
-#define DOC_ChipID_UNKNOWN 0x00
#define DOC_ChipID_Doc2k 0x20
+#define DOC_ChipID_Doc2kTSOP 0x21 /* internal number for MTD */
#define DOC_ChipID_DocMil 0x30
+#define DOC_ChipID_DocMilPlus32 0x40
+#define DOC_ChipID_DocMilPlus16 0x41
#define CDSN_CTRL_FR_B 0x80
+#define CDSN_CTRL_FR_B0 0x40
+#define CDSN_CTRL_FR_B1 0x80
+
#define CDSN_CTRL_ECC_IO 0x20
#define CDSN_CTRL_FLASH_IO 0x10
#define CDSN_CTRL_WP 0x08
@@ -77,20 +140,14 @@
#define DOC_ECC_RESV 0x02
#define DOC_ECC_IGNORE 0x01
+#define DOC_FLASH_CE 0x80
+#define DOC_FLASH_WP 0x40
+#define DOC_FLASH_BANK 0x02
+
/* We have to also set the reserved bit 1 for enable */
#define DOC_ECC_EN (DOC_ECC__EN | DOC_ECC_RESV)
#define DOC_ECC_DIS (DOC_ECC_RESV)
-#define MAX_FLOORS 4
-#define MAX_CHIPS 4
-
-#define MAX_FLOORS_MIL 4
-#define MAX_CHIPS_MIL 1
-
-#define ADDR_COLUMN 1
-#define ADDR_PAGE 2
-#define ADDR_COLUMN_PAGE 3
-
struct Nand {
char floor, chip;
unsigned long curadr;
@@ -98,20 +155,32 @@
/* Also some erase/write/pipeline info when we get that far */
};
+#define MAX_FLOORS 4
+#define MAX_CHIPS 4
+
+#define MAX_FLOORS_MIL 1
+#define MAX_CHIPS_MIL 1
+
+#define MAX_FLOORS_MPLUS 2
+#define MAX_CHIPS_MPLUS 1
+
+#define ADDR_COLUMN 1
+#define ADDR_PAGE 2
+#define ADDR_COLUMN_PAGE 3
+
struct DiskOnChip {
unsigned long physadr;
- unsigned long virtadr;
+ void __iomem *virtadr;
unsigned long totlen;
- char* name;
- char ChipID; /* Type of DiskOnChip */
+ unsigned char ChipID; /* Type of DiskOnChip */
int ioreg;
- char* chips_name;
unsigned long mfr; /* Flash IDs - only one type of flash per device */
unsigned long id;
int chipshift;
char page256;
char pageadrlen;
+ char interleave; /* Internal interleaving - Millennium Plus style */
unsigned long erasesize;
int curfloor;
@@ -119,98 +188,22 @@
int numchips;
struct Nand *chips;
-
- int nftl_found;
- struct NFTLrecord nftl;
+ struct mtd_info *nextdoc;
+/* XXX U-BOOT XXX */
+#if 0
+ struct mutex lock;
+#endif
};
-#define SECTORSIZE 512
-
-/* Return codes from doc_write(), doc_read(), and doc_erase().
- */
-#define DOC_OK 0
-#define DOC_EIO 1
-#define DOC_EINVAL 2
-#define DOC_EECC 3
-#define DOC_ETIMEOUT 4
-
-/*
- * Function Prototypes
- */
int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]);
-int doc_rw(struct DiskOnChip* this, int cmd, loff_t from, size_t len,
- size_t *retlen, u_char *buf);
-int doc_read_ecc(struct DiskOnChip* this, loff_t from, size_t len,
- size_t *retlen, u_char *buf, u_char *eccbuf);
-int doc_write_ecc(struct DiskOnChip* this, loff_t to, size_t len,
- size_t *retlen, const u_char *buf, u_char *eccbuf);
-int doc_read_oob(struct DiskOnChip* this, loff_t ofs, size_t len,
- size_t *retlen, u_char *buf);
-int doc_write_oob(struct DiskOnChip* this, loff_t ofs, size_t len,
- size_t *retlen, const u_char *buf);
-int doc_erase (struct DiskOnChip* this, loff_t ofs, size_t len);
-
-void doc_probe(unsigned long physadr);
-
-void doc_print(struct DiskOnChip*);
-
-/*
- * Standard NAND flash commands
- */
-#define NAND_CMD_READ0 0
-#define NAND_CMD_READ1 1
-#define NAND_CMD_PAGEPROG 0x10
-#define NAND_CMD_READOOB 0x50
-#define NAND_CMD_ERASE1 0x60
-#define NAND_CMD_STATUS 0x70
-#define NAND_CMD_SEQIN 0x80
-#define NAND_CMD_READID 0x90
-#define NAND_CMD_ERASE2 0xd0
-#define NAND_CMD_RESET 0xff
-
+/* XXX U-BOOT XXX */
+#if 1
/*
* NAND Flash Manufacturer ID Codes
*/
-#define NAND_MFR_TOSHIBA 0x98
-#define NAND_MFR_SAMSUNG 0xec
-
-/*
- * NAND Flash Device ID Structure
- *
- * Structure overview:
- *
- * name - Complete name of device
- *
- * manufacture_id - manufacturer ID code of device.
- *
- * model_id - model ID code of device.
- *
- * chipshift - total number of address bits for the device which
- * is used to calculate address offsets and the total
- * number of bytes the device is capable of.
- *
- * page256 - denotes if flash device has 256 byte pages or not.
- *
- * pageadrlen - number of bytes minus one needed to hold the
- * complete address into the flash array. Keep in
- * mind that when a read or write is done to a
- * specific address, the address is input serially
- * 8 bits at a time. This structure member is used
- * by the read/write routines as a loop index for
- * shifting the address out 8 bits at a time.
- *
- * erasesize - size of an erase block in the flash device.
- */
-struct nand_flash_dev {
- char * name;
- int manufacture_id;
- int model_id;
- int chipshift;
- char page256;
- char pageadrlen;
- unsigned long erasesize;
- int bus16;
-};
+#define NAND_MFR_TOSHIBA 0x98
+#define NAND_MFR_SAMSUNG 0xec
+#endif
#endif /* __MTD_DOC2000_H__ */