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