upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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197 lines
6.3 KiB
197 lines
6.3 KiB
/*
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* $Id: mtd-abi.h,v 1.13 2005/11/07 11:14:56 gleixner Exp $
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*
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* Portions of MTD ABI definition which are shared by kernel and user space
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*/
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#ifndef __MTD_ABI_H__
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#define __MTD_ABI_H__
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#if 1
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#include <linux/compat.h>
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#endif
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#include <linux/compiler.h>
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struct erase_info_user {
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uint32_t start;
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uint32_t length;
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};
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struct mtd_oob_buf {
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uint32_t start;
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uint32_t length;
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unsigned char __user *ptr;
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};
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/*
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* MTD operation modes
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*
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* @MTD_OPS_PLACE_OOB: OOB data are placed at the given offset (default)
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* @MTD_OPS_AUTO_OOB: OOB data are automatically placed at the free areas
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* which are defined by the internal ecclayout
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* @MTD_OPS_RAW: data are transferred as-is, with no error correction;
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* this mode implies %MTD_OPS_PLACE_OOB
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*
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* These modes can be passed to ioctl(MEMWRITE) and are also used internally.
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* See notes on "MTD file modes" for discussion on %MTD_OPS_RAW vs.
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* %MTD_FILE_MODE_RAW.
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*/
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enum {
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MTD_OPS_PLACE_OOB = 0,
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MTD_OPS_AUTO_OOB = 1,
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MTD_OPS_RAW = 2,
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};
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#define MTD_ABSENT 0
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#define MTD_RAM 1
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#define MTD_ROM 2
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#define MTD_NORFLASH 3
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#define MTD_NANDFLASH 4
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#define MTD_DATAFLASH 6
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#define MTD_UBIVOLUME 7
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#define MTD_WRITEABLE 0x400 /* Device is writeable */
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#define MTD_BIT_WRITEABLE 0x800 /* Single bits can be flipped */
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#define MTD_NO_ERASE 0x1000 /* No erase necessary */
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#define MTD_STUPID_LOCK 0x2000 /* Always locked after reset */
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/* Some common devices / combinations of capabilities */
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#define MTD_CAP_ROM 0
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#define MTD_CAP_RAM (MTD_WRITEABLE | MTD_BIT_WRITEABLE | MTD_NO_ERASE)
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#define MTD_CAP_NORFLASH (MTD_WRITEABLE | MTD_BIT_WRITEABLE)
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#define MTD_CAP_NANDFLASH (MTD_WRITEABLE)
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/* ECC byte placement */
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#define MTD_NANDECC_OFF 0 /* Switch off ECC (Not recommended) */
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#define MTD_NANDECC_PLACE 1 /* Use the given placement in the structure (YAFFS1 legacy mode) */
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#define MTD_NANDECC_AUTOPLACE 2 /* Use the default placement scheme */
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#define MTD_NANDECC_PLACEONLY 3 /* Use the given placement in the structure (Do not store ecc result on read) */
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#define MTD_NANDECC_AUTOPL_USR 4 /* Use the given autoplacement scheme rather than using the default */
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/* OTP mode selection */
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#define MTD_OTP_OFF 0
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#define MTD_OTP_FACTORY 1
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#define MTD_OTP_USER 2
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struct mtd_info_user {
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uint8_t type;
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uint32_t flags;
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uint32_t size; /* Total size of the MTD */
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uint32_t erasesize;
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uint32_t writesize;
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uint32_t oobsize; /* Amount of OOB data per block (e.g. 16) */
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/* The below two fields are obsolete and broken, do not use them
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* (TODO: remove at some point) */
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uint32_t ecctype;
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uint32_t eccsize;
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};
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struct region_info_user {
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uint32_t offset; /* At which this region starts,
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* from the beginning of the MTD */
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uint32_t erasesize; /* For this region */
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uint32_t numblocks; /* Number of blocks in this region */
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uint32_t regionindex;
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};
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struct otp_info {
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uint32_t start;
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uint32_t length;
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uint32_t locked;
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};
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/* Get basic MTD characteristics info (better to use sysfs) */
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#define MEMGETINFO _IOR('M', 1, struct mtd_info_user)
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/* Erase segment of MTD */
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#define MEMERASE _IOW('M', 2, struct erase_info_user)
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/* Write out-of-band data from MTD */
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#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf)
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/* Read out-of-band data from MTD */
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#define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf)
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/* Lock a chip (for MTD that supports it) */
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#define MEMLOCK _IOW('M', 5, struct erase_info_user)
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/* Unlock a chip (for MTD that supports it) */
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#define MEMUNLOCK _IOW('M', 6, struct erase_info_user)
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/* Get the number of different erase regions */
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#define MEMGETREGIONCOUNT _IOR('M', 7, int)
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/* Get information about the erase region for a specific index */
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#define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user)
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/* Get info about OOB modes (e.g., RAW, PLACE, AUTO) - legacy interface */
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#define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo)
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#define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo)
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/* Check if an eraseblock is bad */
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#define MEMGETBADBLOCK _IOW('M', 11, loff_t)
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/* Mark an eraseblock as bad */
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#define MEMSETBADBLOCK _IOW('M', 12, loff_t)
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/* Set OTP (One-Time Programmable) mode (factory vs. user) */
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#define OTPSELECT _IOR('M', 13, int)
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/* Get number of OTP (One-Time Programmable) regions */
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#define OTPGETREGIONCOUNT _IOW('M', 14, int)
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/* Get all OTP (One-Time Programmable) info about MTD */
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#define OTPGETREGIONINFO _IOW('M', 15, struct otp_info)
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/* Lock a given range of user data (must be in mode %MTD_FILE_MODE_OTP_USER) */
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#define OTPLOCK _IOR('M', 16, struct otp_info)
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/* Get ECC layout (deprecated) */
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#define ECCGETLAYOUT _IOR('M', 17, struct nand_ecclayout)
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/* Get statistics about corrected/uncorrected errors */
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#define ECCGETSTATS _IOR('M', 18, struct mtd_ecc_stats)
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/* Set MTD mode on a per-file-descriptor basis (see "MTD file modes") */
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#define MTDFILEMODE _IO('M', 19)
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/*
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* Obsolete legacy interface. Keep it in order not to break userspace
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* interfaces
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*/
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struct nand_oobinfo {
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uint32_t useecc;
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uint32_t eccbytes;
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uint32_t oobfree[8][2];
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uint32_t eccpos[48];
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};
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struct nand_oobfree {
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uint32_t offset;
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uint32_t length;
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};
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/**
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* struct mtd_ecc_stats - error correction stats
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*
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* @corrected: number of corrected bits
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* @failed: number of uncorrectable errors
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* @badblocks: number of bad blocks in this partition
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* @bbtblocks: number of blocks reserved for bad block tables
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*/
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struct mtd_ecc_stats {
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uint32_t corrected;
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uint32_t failed;
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uint32_t badblocks;
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uint32_t bbtblocks;
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};
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/*
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* MTD file modes - for read/write access to MTD
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*
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* @MTD_FILE_MODE_NORMAL: OTP disabled, ECC enabled
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* @MTD_FILE_MODE_OTP_FACTORY: OTP enabled in factory mode
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* @MTD_FILE_MODE_OTP_USER: OTP enabled in user mode
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* @MTD_FILE_MODE_RAW: OTP disabled, ECC disabled
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*
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* These modes can be set via ioctl(MTDFILEMODE). The mode mode will be retained
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* separately for each open file descriptor.
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*
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* Note: %MTD_FILE_MODE_RAW provides the same functionality as %MTD_OPS_RAW -
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* raw access to the flash, without error correction or autoplacement schemes.
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* Wherever possible, the MTD_OPS_* mode will override the MTD_FILE_MODE_* mode
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* (e.g., when using ioctl(MEMWRITE)), but in some cases, the MTD_FILE_MODE is
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* used out of necessity (e.g., `write()', ioctl(MEMWRITEOOB64)).
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*/
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enum mtd_file_modes {
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MTD_MODE_NORMAL = MTD_OTP_OFF,
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MTD_MODE_OTP_FACTORY = MTD_OTP_FACTORY,
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MTD_MODE_OTP_USER = MTD_OTP_USER,
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MTD_MODE_RAW,
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};
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#endif /* __MTD_ABI_H__ */
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