137 lines
4.3 KiB
C
137 lines
4.3 KiB
C
/*
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* Copyright (c) Thomas Gleixner <tglx@linutronix.de>
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*
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* SPDX-License-Identifier: GPL 2.0+ BSD-3-Clause
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*/
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#ifndef _UBOOT_MTD_UBISPL_H
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#define _UBOOT_MTD_UBISPL_H
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#include "../ubi/ubi-media.h"
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#include "ubi-wrapper.h"
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/*
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* The maximum number of volume ids we scan. So you can load volume id
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* 0 to (CONFIG_SPL_UBI_VOL_ID_MAX - 1)
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*/
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#define UBI_SPL_VOL_IDS CONFIG_SPL_UBI_VOL_IDS
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/*
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* The size of the read buffer for the fastmap blocks. In theory up to
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* UBI_FM_MAX_BLOCKS * CONFIG_SPL_MAX_PEB_SIZE. In practice today
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* one or two blocks.
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*/
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#define UBI_FM_BUF_SIZE (UBI_FM_MAX_BLOCKS*CONFIG_SPL_UBI_MAX_PEB_SIZE)
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/*
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* The size of the bitmaps for the attach/ scan
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*/
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#define UBI_FM_BM_SIZE ((CONFIG_SPL_UBI_MAX_PEBS / BITS_PER_LONG) + 1)
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/*
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* The maximum number of logical erase blocks per loadable volume
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*/
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#define UBI_MAX_VOL_LEBS CONFIG_SPL_UBI_MAX_VOL_LEBS
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/*
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* The bitmap size for the above to denote the found blocks inside the volume
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*/
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#define UBI_VOL_BM_SIZE ((UBI_MAX_VOL_LEBS / BITS_PER_LONG) + 1)
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/**
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* struct ubi_vol_info - UBISPL internal volume represenation
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* @last_block: The last block (highest LEB) found for this volume
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* @found: Bitmap to mark found LEBS
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* @lebs_to_pebs: LEB to PEB translation table
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*/
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struct ubi_vol_info {
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u32 last_block;
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unsigned long found[UBI_VOL_BM_SIZE];
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u32 lebs_to_pebs[UBI_MAX_VOL_LEBS];
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};
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/**
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* struct ubi_scan_info - UBISPL internal data for FM attach and full scan
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*
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* @read: Read function to access the flash provided by the caller
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* @peb_count: Number of physical erase blocks in the UBI FLASH area
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* aka MTD partition.
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* @peb_offset: Offset of PEB0 in the UBI FLASH area (aka MTD partition)
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* to the real start of the FLASH in erase blocks.
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* @fsize_mb: Size of the scanned FLASH area in MB (stats only)
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* @vid_offset: Offset from the start of a PEB to the VID header
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* @leb_start: Offset from the start of a PEB to the data area
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* @leb_size: Size of the data area
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*
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* @fastmap_pebs: Counter of PEBs "attached" by fastmap
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* @fastmap_anchor: The anchor PEB of the fastmap
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* @fm_sb: The fastmap super block data
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* @fm_vh: The fastmap VID header
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* @fm: Pointer to the fastmap layout
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* @fm_layout: The fastmap layout itself
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* @fm_pool: The pool of PEBs to scan at fastmap attach time
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* @fm_wl_pool: The pool of PEBs scheduled for wearleveling
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*
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* @fm_enabled: Indicator whether fastmap attachment is enabled.
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* @fm_used: Bitmap to indicate the PEBS covered by fastmap
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* @scanned: Bitmap to indicate the PEBS of which the VID header
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* hase been physically scanned.
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* @corrupt: Bitmap to indicate corrupt blocks
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* @toload: Bitmap to indicate the volumes which should be loaded
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*
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* @blockinfo: The vid headers of the scanned blocks
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* @volinfo: The volume information of the interesting (toload)
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* volumes
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*
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* @fm_buf: The large fastmap attach buffer
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*/
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struct ubi_scan_info {
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ubispl_read_flash read;
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unsigned int fsize_mb;
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unsigned int peb_count;
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unsigned int peb_offset;
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unsigned long vid_offset;
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unsigned long leb_start;
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unsigned long leb_size;
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/* Fastmap: The upstream required fields */
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int fastmap_pebs;
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int fastmap_anchor;
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size_t fm_size;
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struct ubi_fm_sb fm_sb;
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struct ubi_vid_hdr fm_vh;
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struct ubi_fastmap_layout *fm;
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struct ubi_fastmap_layout fm_layout;
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struct ubi_fm_pool fm_pool;
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struct ubi_fm_pool fm_wl_pool;
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/* Fastmap: UBISPL specific data */
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int fm_enabled;
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unsigned long fm_used[UBI_FM_BM_SIZE];
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unsigned long scanned[UBI_FM_BM_SIZE];
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unsigned long corrupt[UBI_FM_BM_SIZE];
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unsigned long toload[UBI_FM_BM_SIZE];
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/* Data for storing the VID and volume information */
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struct ubi_vol_info volinfo[UBI_SPL_VOL_IDS];
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struct ubi_vid_hdr blockinfo[CONFIG_SPL_UBI_MAX_PEBS];
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/* The large buffer for the fastmap */
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uint8_t fm_buf[UBI_FM_BUF_SIZE];
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};
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#ifdef CFG_DEBUG
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#define ubi_dbg(fmt, ...) printf("UBI: debug:" fmt "\n", ##__VA_ARGS__)
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#else
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#define ubi_dbg(fmt, ...)
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#endif
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#ifdef CONFIG_UBI_SILENCE_MSG
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#define ubi_msg(fmt, ...)
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#else
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#define ubi_msg(fmt, ...) printf("UBI: " fmt "\n", ##__VA_ARGS__)
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#endif
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/* UBI warning messages */
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#define ubi_warn(fmt, ...) printf("UBI warning: " fmt "\n", ##__VA_ARGS__)
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/* UBI error messages */
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#define ubi_err(fmt, ...) printf("UBI error: " fmt "\n", ##__VA_ARGS__)
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#endif
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