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Update MTD to that of Linux 2.6.22.1

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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>
This commit is contained in:
William Juul
2007-10-31 13:53:06 +01:00
committed by Scott Wood
parent cd82919e6c
commit cfa460adfd
37 changed files with 4829 additions and 3436 deletions
Download Patch File Download Diff File Expand all files Collapse all files

135
include/linux/mtd/mtd-abi.h
View File

@@ -1,5 +1,5 @@
/*
* $Id: mtd-abi.h,v 1.7 2004/11/23 15:37:32 gleixner Exp $
* $Id: mtd-abi.h,v 1.13 2005/11/07 11:14:56 gleixner Exp $
*
* Portions of MTD ABI definition which are shared by kernel and user space
*/
@@ -7,6 +7,10 @@
#ifndef __MTD_ABI_H__
#define __MTD_ABI_H__
#if 1
#include <linux/mtd/compat.h>
#endif
struct erase_info_user {
uint32_t start;
uint32_t length;
@@ -15,7 +19,7 @@ struct erase_info_user {
struct mtd_oob_buf {
uint32_t start;
uint32_t length;
unsigned char *ptr;
unsigned char __user *ptr;
};
#define MTD_ABSENT 0
@@ -23,47 +27,41 @@ struct mtd_oob_buf {
#define MTD_ROM 2
#define MTD_NORFLASH 3
#define MTD_NANDFLASH 4
#define MTD_PEROM 5
#define MTD_OTHER 14
#define MTD_UNKNOWN 15
#define MTD_DATAFLASH 6
#define MTD_UBIVOLUME 7
#define MTD_CLEAR_BITS 1 /* Bits can be cleared (flash) */
#define MTD_SET_BITS 2 /* Bits can be set */
#define MTD_ERASEABLE 4 /* Has an erase function */
#define MTD_WRITEB_WRITEABLE 8 /* Direct IO is possible */
#define MTD_VOLATILE 16 /* Set for RAMs */
#define MTD_XIP 32 /* eXecute-In-Place possible */
#define MTD_OOB 64 /* Out-of-band data (NAND flash) */
#define MTD_ECC 128 /* Device capable of automatic ECC */
#define MTD_NO_VIRTBLOCKS 256 /* Virtual blocks not allowed */
#define MTD_WRITEABLE 0x400 /* Device is writeable */
#define MTD_BIT_WRITEABLE 0x800 /* Single bits can be flipped */
#define MTD_NO_ERASE 0x1000 /* No erase necessary */
#define MTD_STUPID_LOCK 0x2000 /* Always locked after reset */
/* Some common devices / combinations of capabilities */
// Some common devices / combinations of capabilities
#define MTD_CAP_ROM 0
#define MTD_CAP_RAM (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEB_WRITEABLE)
#define MTD_CAP_NORFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE)
#define MTD_CAP_NANDFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE|MTD_OOB)
#define MTD_WRITEABLE (MTD_CLEAR_BITS|MTD_SET_BITS)
/* Types of automatic ECC/Checksum available */
#define MTD_ECC_NONE 0 /* No automatic ECC available */
#define MTD_ECC_RS_DiskOnChip 1 /* Automatic ECC on DiskOnChip */
#define MTD_ECC_SW 2 /* SW ECC for Toshiba & Samsung devices */
#define MTD_CAP_RAM (MTD_WRITEABLE | MTD_BIT_WRITEABLE | MTD_NO_ERASE)
#define MTD_CAP_NORFLASH (MTD_WRITEABLE | MTD_BIT_WRITEABLE)
#define MTD_CAP_NANDFLASH (MTD_WRITEABLE)
/* ECC byte placement */
#define MTD_NANDECC_OFF 0 /* Switch off ECC (Not recommended) */
#define MTD_NANDECC_PLACE 1 /* Use the given placement in the structure (YAFFS1 legacy mode) */
#define MTD_NANDECC_AUTOPLACE 2 /* Use the default placement scheme */
#define MTD_NANDECC_PLACEONLY 3 /* Use the given placement in the structure (Do not store ecc result on read) */
#define MTD_NANDECC_AUTOPL_USR 4 /* Use the given autoplacement scheme rather than using the default */
#define MTD_NANDECC_OFF 0 // Switch off ECC (Not recommended)
#define MTD_NANDECC_PLACE 1 // Use the given placement in the structure (YAFFS1 legacy mode)
#define MTD_NANDECC_AUTOPLACE 2 // Use the default placement scheme
#define MTD_NANDECC_PLACEONLY 3 // Use the given placement in the structure (Do not store ecc result on read)
#define MTD_NANDECC_AUTOPL_USR 4 // Use the given autoplacement scheme rather than using the default
/* OTP mode selection */
#define MTD_OTP_OFF 0
#define MTD_OTP_FACTORY 1
#define MTD_OTP_USER 2
struct mtd_info_user {
uint8_t type;
uint32_t flags;
uint32_t size; /* Total size of the MTD */
uint32_t size; // Total size of the MTD
uint32_t erasesize;
uint32_t oobblock; /* Size of OOB blocks (e.g. 512) */
uint32_t oobsize; /* Amount of OOB data per block (e.g. 16) */
uint32_t writesize;
uint32_t oobsize; // Amount of OOB data per block (e.g. 16)
/* The below two fields are obsolete and broken, do not use them
* (TODO: remove at some point) */
uint32_t ecctype;
uint32_t eccsize;
};
@@ -76,19 +74,36 @@ struct region_info_user {
uint32_t regionindex;
};
#define MEMGETINFO _IOR('M', 1, struct mtd_info_user)
#define MEMERASE _IOW('M', 2, struct erase_info_user)
#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf)
#define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf)
#define MEMLOCK _IOW('M', 5, struct erase_info_user)
#define MEMUNLOCK _IOW('M', 6, struct erase_info_user)
struct otp_info {
uint32_t start;
uint32_t length;
uint32_t locked;
};
#define MEMGETINFO _IOR('M', 1, struct mtd_info_user)
#define MEMERASE _IOW('M', 2, struct erase_info_user)
#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf)
#define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf)
#define MEMLOCK _IOW('M', 5, struct erase_info_user)
#define MEMUNLOCK _IOW('M', 6, struct erase_info_user)
#define MEMGETREGIONCOUNT _IOR('M', 7, int)
#define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user)
#define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo)
#define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo)
#define MEMGETBADBLOCK _IOW('M', 11, loff_t)
#define MEMSETBADBLOCK _IOW('M', 12, loff_t)
#define OTPSELECT _IOR('M', 13, int)
#define OTPGETREGIONCOUNT _IOW('M', 14, int)
#define OTPGETREGIONINFO _IOW('M', 15, struct otp_info)
#define OTPLOCK _IOR('M', 16, struct otp_info)
#define ECCGETLAYOUT _IOR('M', 17, struct nand_ecclayout)
#define ECCGETSTATS _IOR('M', 18, struct mtd_ecc_stats)
#define MTDFILEMODE _IO('M', 19)
/*
* Obsolete legacy interface. Keep it in order not to break userspace
* interfaces
*/
struct nand_oobinfo {
uint32_t useecc;
uint32_t eccbytes;
@@ -96,4 +111,46 @@ struct nand_oobinfo {
uint32_t eccpos[48];
};
struct nand_oobfree {
uint32_t offset;
uint32_t length;
};
#define MTD_MAX_OOBFREE_ENTRIES 8
/*
* ECC layout control structure. Exported to userspace for
* diagnosis and to allow creation of raw images
*/
struct nand_ecclayout {
uint32_t eccbytes;
uint32_t eccpos[64];
uint32_t oobavail;
struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES];
};
/**
* struct mtd_ecc_stats - error correction stats
*
* @corrected: number of corrected bits
* @failed: number of uncorrectable errors
* @badblocks: number of bad blocks in this partition
* @bbtblocks: number of blocks reserved for bad block tables
*/
struct mtd_ecc_stats {
uint32_t corrected;
uint32_t failed;
uint32_t badblocks;
uint32_t bbtblocks;
};
/*
* Read/write file modes for access to MTD
*/
enum mtd_file_modes {
MTD_MODE_NORMAL = MTD_OTP_OFF,
MTD_MODE_OTP_FACTORY = MTD_OTP_FACTORY,
MTD_MODE_OTP_USER = MTD_OTP_USER,
MTD_MODE_RAW,
};
#endif /* __MTD_ABI_H__ */