ubi-wrapper.h
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/* SPDX-License-Identifier: GPL 2.0+ OR BSD-3-Clause */
/*
* The parts taken from the kernel implementation are:
*
* Copyright (c) International Business Machines Corp., 2006
*
* UBISPL specific defines:
*
* Copyright (c) Thomas Gleixner <tglx@linutronix.de>
*/
/*
* Contains various defines copy&pasted from ubi.h and ubi-user.h to make
* the upstream fastboot code happy.
*/
#ifndef __UBOOT_UBI_WRAPPER_H
#define __UBOOT_UBI_WRAPPER_H
/*
* Error codes returned by the I/O sub-system.
*
* UBI_IO_FF: the read region of flash contains only 0xFFs
* UBI_IO_FF_BITFLIPS: the same as %UBI_IO_FF, but also also there was a data
* integrity error reported by the MTD driver
* (uncorrectable ECC error in case of NAND)
* UBI_IO_BAD_HDR: the EC or VID header is corrupted (bad magic or CRC)
* UBI_IO_BAD_HDR_EBADMSG: the same as %UBI_IO_BAD_HDR, but also there was a
* data integrity error reported by the MTD driver
* (uncorrectable ECC error in case of NAND)
* UBI_IO_BITFLIPS: bit-flips were detected and corrected
*
* UBI_FASTMAP_ANCHOR: u-boot SPL add on to tell the caller that the fastmap
* anchor block has been found
*
* Note, it is probably better to have bit-flip and ebadmsg as flags which can
* be or'ed with other error code. But this is a big change because there are
* may callers, so it does not worth the risk of introducing a bug
*/
enum {
UBI_IO_FF = 1,
UBI_IO_FF_BITFLIPS,
UBI_IO_BAD_HDR,
UBI_IO_BAD_HDR_EBADMSG,
UBI_IO_BITFLIPS,
UBI_FASTMAP_ANCHOR,
};
/*
* UBI volume type constants.
*
* @UBI_DYNAMIC_VOLUME: dynamic volume
* @UBI_STATIC_VOLUME: static volume
*/
enum {
UBI_DYNAMIC_VOLUME = 3,
UBI_STATIC_VOLUME = 4,
};
/*
* Return codes of the fastmap sub-system
*
* UBI_NO_FASTMAP: No fastmap super block was found
* UBI_BAD_FASTMAP: A fastmap was found but it's unusable
*/
enum {
UBI_NO_FASTMAP = 1,
UBI_BAD_FASTMAP,
};
/**
* struct ubi_fastmap_layout - in-memory fastmap data structure.
* @e: PEBs used by the current fastmap
* @to_be_tortured: if non-zero tortured this PEB
* @used_blocks: number of used PEBs
* @max_pool_size: maximal size of the user pool
* @max_wl_pool_size: maximal size of the pool used by the WL sub-system
*/
struct ubi_fastmap_layout {
struct ubi_wl_entry *e[UBI_FM_MAX_BLOCKS];
int to_be_tortured[UBI_FM_MAX_BLOCKS];
int used_blocks;
int max_pool_size;
int max_wl_pool_size;
};
/**
* struct ubi_fm_pool - in-memory fastmap pool
* @pebs: PEBs in this pool
* @used: number of used PEBs
* @size: total number of PEBs in this pool
* @max_size: maximal size of the pool
*
* A pool gets filled with up to max_size.
* If all PEBs within the pool are used a new fastmap will be written
* to the flash and the pool gets refilled with empty PEBs.
*
*/
struct ubi_fm_pool {
int pebs[UBI_FM_MAX_POOL_SIZE];
int used;
int size;
int max_size;
};
#endif