mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 01:38:22 +00:00
3b61297024
U-Boot has imported various source files from other projects,
mostly Linux.
Something like
#ifdef __UBOOT__
[ modification for U-Boot ]
#else
[ original code ]
#endif
is an often used strategy for clarification of adjusted parts,
that is, easier re-sync in future.
Instead of defining __UBOOT__ in each source file,
passing it from the top Makefile would be easier.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
275 lines
8.7 KiB
C
275 lines
8.7 KiB
C
/*
|
|
* Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org> et al.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*
|
|
*/
|
|
|
|
#ifndef __MTD_ABI_H__
|
|
#define __MTD_ABI_H__
|
|
|
|
#ifdef __UBOOT__
|
|
#include <linux/compat.h>
|
|
#endif
|
|
|
|
#include <linux/compiler.h>
|
|
|
|
struct erase_info_user {
|
|
__u32 start;
|
|
__u32 length;
|
|
};
|
|
|
|
struct erase_info_user64 {
|
|
__u64 start;
|
|
__u64 length;
|
|
};
|
|
|
|
struct mtd_oob_buf {
|
|
__u32 start;
|
|
__u32 length;
|
|
unsigned char __user *ptr;
|
|
};
|
|
|
|
struct mtd_oob_buf64 {
|
|
__u64 start;
|
|
__u32 pad;
|
|
__u32 length;
|
|
__u64 usr_ptr;
|
|
};
|
|
|
|
/**
|
|
* MTD operation modes
|
|
*
|
|
* @MTD_OPS_PLACE_OOB: OOB data are placed at the given offset (default)
|
|
* @MTD_OPS_AUTO_OOB: OOB data are automatically placed at the free areas
|
|
* which are defined by the internal ecclayout
|
|
* @MTD_OPS_RAW: data are transferred as-is, with no error correction;
|
|
* this mode implies %MTD_OPS_PLACE_OOB
|
|
*
|
|
* These modes can be passed to ioctl(MEMWRITE) and are also used internally.
|
|
* See notes on "MTD file modes" for discussion on %MTD_OPS_RAW vs.
|
|
* %MTD_FILE_MODE_RAW.
|
|
*/
|
|
enum {
|
|
MTD_OPS_PLACE_OOB = 0,
|
|
MTD_OPS_AUTO_OOB = 1,
|
|
MTD_OPS_RAW = 2,
|
|
};
|
|
|
|
/**
|
|
* struct mtd_write_req - data structure for requesting a write operation
|
|
*
|
|
* @start: start address
|
|
* @len: length of data buffer
|
|
* @ooblen: length of OOB buffer
|
|
* @usr_data: user-provided data buffer
|
|
* @usr_oob: user-provided OOB buffer
|
|
* @mode: MTD mode (see "MTD operation modes")
|
|
* @padding: reserved, must be set to 0
|
|
*
|
|
* This structure supports ioctl(MEMWRITE) operations, allowing data and/or OOB
|
|
* writes in various modes. To write to OOB-only, set @usr_data == NULL, and to
|
|
* write data-only, set @usr_oob == NULL. However, setting both @usr_data and
|
|
* @usr_oob to NULL is not allowed.
|
|
*/
|
|
struct mtd_write_req {
|
|
__u64 start;
|
|
__u64 len;
|
|
__u64 ooblen;
|
|
__u64 usr_data;
|
|
__u64 usr_oob;
|
|
__u8 mode;
|
|
__u8 padding[7];
|
|
};
|
|
|
|
#define MTD_ABSENT 0
|
|
#define MTD_RAM 1
|
|
#define MTD_ROM 2
|
|
#define MTD_NORFLASH 3
|
|
#define MTD_NANDFLASH 4 /* SLC NAND */
|
|
#define MTD_DATAFLASH 6
|
|
#define MTD_UBIVOLUME 7
|
|
#define MTD_MLCNANDFLASH 8 /* MLC NAND (including TLC) */
|
|
|
|
#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_POWERUP_LOCK 0x2000 /* Always locked after reset */
|
|
|
|
/* Some common devices / combinations of capabilities */
|
|
#define MTD_CAP_ROM 0
|
|
#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)
|
|
|
|
/* Obsolete ECC byte placement modes (used with obsolete MEMGETOOBSEL) */
|
|
#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 {
|
|
__u8 type;
|
|
__u32 flags;
|
|
__u32 size; /* Total size of the MTD */
|
|
__u32 erasesize;
|
|
__u32 writesize;
|
|
__u32 oobsize; /* Amount of OOB data per block (e.g. 16) */
|
|
__u64 padding; /* Old obsolete field; do not use */
|
|
};
|
|
|
|
struct region_info_user {
|
|
__u32 offset; /* At which this region starts,
|
|
* from the beginning of the MTD */
|
|
__u32 erasesize; /* For this region */
|
|
__u32 numblocks; /* Number of blocks in this region */
|
|
__u32 regionindex;
|
|
};
|
|
|
|
struct otp_info {
|
|
__u32 start;
|
|
__u32 length;
|
|
__u32 locked;
|
|
};
|
|
|
|
/*
|
|
* Note, the following ioctl existed in the past and was removed:
|
|
* #define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo)
|
|
* Try to avoid adding a new ioctl with the same ioctl number.
|
|
*/
|
|
|
|
/* Get basic MTD characteristics info (better to use sysfs) */
|
|
#define MEMGETINFO _IOR('M', 1, struct mtd_info_user)
|
|
/* Erase segment of MTD */
|
|
#define MEMERASE _IOW('M', 2, struct erase_info_user)
|
|
/* Write out-of-band data from MTD */
|
|
#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf)
|
|
/* Read out-of-band data from MTD */
|
|
#define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf)
|
|
/* Lock a chip (for MTD that supports it) */
|
|
#define MEMLOCK _IOW('M', 5, struct erase_info_user)
|
|
/* Unlock a chip (for MTD that supports it) */
|
|
#define MEMUNLOCK _IOW('M', 6, struct erase_info_user)
|
|
/* Get the number of different erase regions */
|
|
#define MEMGETREGIONCOUNT _IOR('M', 7, int)
|
|
/* Get information about the erase region for a specific index */
|
|
#define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user)
|
|
/* Get info about OOB modes (e.g., RAW, PLACE, AUTO) - legacy interface */
|
|
#define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo)
|
|
/* Check if an eraseblock is bad */
|
|
#define MEMGETBADBLOCK _IOW('M', 11, __kernel_loff_t)
|
|
/* Mark an eraseblock as bad */
|
|
#define MEMSETBADBLOCK _IOW('M', 12, __kernel_loff_t)
|
|
/* Set OTP (One-Time Programmable) mode (factory vs. user) */
|
|
#define OTPSELECT _IOR('M', 13, int)
|
|
/* Get number of OTP (One-Time Programmable) regions */
|
|
#define OTPGETREGIONCOUNT _IOW('M', 14, int)
|
|
/* Get all OTP (One-Time Programmable) info about MTD */
|
|
#define OTPGETREGIONINFO _IOW('M', 15, struct otp_info)
|
|
/* Lock a given range of user data (must be in mode %MTD_FILE_MODE_OTP_USER) */
|
|
#define OTPLOCK _IOR('M', 16, struct otp_info)
|
|
/* Get ECC layout (deprecated) */
|
|
#define ECCGETLAYOUT _IOR('M', 17, struct nand_ecclayout_user)
|
|
/* Get statistics about corrected/uncorrected errors */
|
|
#define ECCGETSTATS _IOR('M', 18, struct mtd_ecc_stats)
|
|
/* Set MTD mode on a per-file-descriptor basis (see "MTD file modes") */
|
|
#define MTDFILEMODE _IO('M', 19)
|
|
/* Erase segment of MTD (supports 64-bit address) */
|
|
#define MEMERASE64 _IOW('M', 20, struct erase_info_user64)
|
|
/* Write data to OOB (64-bit version) */
|
|
#define MEMWRITEOOB64 _IOWR('M', 21, struct mtd_oob_buf64)
|
|
/* Read data from OOB (64-bit version) */
|
|
#define MEMREADOOB64 _IOWR('M', 22, struct mtd_oob_buf64)
|
|
/* Check if chip is locked (for MTD that supports it) */
|
|
#define MEMISLOCKED _IOR('M', 23, struct erase_info_user)
|
|
/*
|
|
* Most generic write interface; can write in-band and/or out-of-band in various
|
|
* modes (see "struct mtd_write_req"). This ioctl is not supported for flashes
|
|
* without OOB, e.g., NOR flash.
|
|
*/
|
|
#define MEMWRITE _IOWR('M', 24, struct mtd_write_req)
|
|
|
|
/*
|
|
* Obsolete legacy interface. Keep it in order not to break userspace
|
|
* interfaces
|
|
*/
|
|
struct nand_oobinfo {
|
|
__u32 useecc;
|
|
__u32 eccbytes;
|
|
__u32 oobfree[8][2];
|
|
__u32 eccpos[32];
|
|
};
|
|
|
|
struct nand_oobfree {
|
|
__u32 offset;
|
|
__u32 length;
|
|
};
|
|
|
|
#define MTD_MAX_OOBFREE_ENTRIES 8
|
|
#define MTD_MAX_ECCPOS_ENTRIES 64
|
|
/*
|
|
* OBSOLETE: ECC layout control structure. Exported to user-space via ioctl
|
|
* ECCGETLAYOUT for backwards compatbility and should not be mistaken as a
|
|
* complete set of ECC information. The ioctl truncates the larger internal
|
|
* structure to retain binary compatibility with the static declaration of the
|
|
* ioctl. Note that the "MTD_MAX_..._ENTRIES" macros represent the max size of
|
|
* the user struct, not the MAX size of the internal struct nand_ecclayout.
|
|
*/
|
|
struct nand_ecclayout_user {
|
|
__u32 eccbytes;
|
|
__u32 eccpos[MTD_MAX_ECCPOS_ENTRIES];
|
|
__u32 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 {
|
|
__u32 corrected;
|
|
__u32 failed;
|
|
__u32 badblocks;
|
|
__u32 bbtblocks;
|
|
};
|
|
|
|
/*
|
|
* MTD file modes - for read/write access to MTD
|
|
*
|
|
* @MTD_FILE_MODE_NORMAL: OTP disabled, ECC enabled
|
|
* @MTD_FILE_MODE_OTP_FACTORY: OTP enabled in factory mode
|
|
* @MTD_FILE_MODE_OTP_USER: OTP enabled in user mode
|
|
* @MTD_FILE_MODE_RAW: OTP disabled, ECC disabled
|
|
*
|
|
* These modes can be set via ioctl(MTDFILEMODE). The mode mode will be retained
|
|
* separately for each open file descriptor.
|
|
*
|
|
* Note: %MTD_FILE_MODE_RAW provides the same functionality as %MTD_OPS_RAW -
|
|
* raw access to the flash, without error correction or autoplacement schemes.
|
|
* Wherever possible, the MTD_OPS_* mode will override the MTD_FILE_MODE_* mode
|
|
* (e.g., when using ioctl(MEMWRITE)), but in some cases, the MTD_FILE_MODE is
|
|
* used out of necessity (e.g., `write()', ioctl(MEMWRITEOOB64)).
|
|
*/
|
|
enum mtd_file_modes {
|
|
MTD_FILE_MODE_NORMAL = MTD_OTP_OFF,
|
|
MTD_FILE_MODE_OTP_FACTORY = MTD_OTP_FACTORY,
|
|
MTD_FILE_MODE_OTP_USER = MTD_OTP_USER,
|
|
MTD_FILE_MODE_RAW,
|
|
};
|
|
|
|
static inline int mtd_type_is_nand_user(const struct mtd_info_user *mtd)
|
|
{
|
|
return mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH;
|
|
}
|
|
|
|
#endif /* __MTD_ABI_H__ */
|