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git.ipfire.org Git - people/ms/u-boot.git/blob - include/ubispl.h
2 * Copyright (c) Thomas Gleixner <tglx@linutronix.de>
4 * SPDX-License-Identifier: GPL 2.0+ BSD-3-Clause
6 #ifndef __UBOOT_UBISPL_H
7 #define __UBOOT_UBISPL_H
10 * The following CONFIG options are relevant for UBISPL
12 * #define CONFIG_SPL_UBI_MAX_VOL_LEBS 256
14 * Defines the maximum number of logical erase blocks per loadable
15 * (static) volume to size the ubispl internal arrays.
17 * #define CONFIG_SPL_UBI_MAX_PEB_SIZE (256*1024)
19 * Defines the maximum physical erase block size to size the fastmap
22 * #define CONFIG_SPL_UBI_MAX_PEBS 4096
24 * Define the maximum number of physical erase blocks to size the
25 * ubispl internal arrays.
27 * #define CONFIG_SPL_UBI_VOL_IDS 8
29 * Defines the maximum number of volumes in which UBISPL is
30 * interested. Limits the amount of memory for the scan data and
31 * speeds up the scan process as we simply ignore stuff which we dont
32 * want to load from the SPL anyway. So the volumes which can be
33 * loaded in the above example are ids 0 - 7
37 * The struct definition is in drivers/mtd/ubispl/ubispl.h. It does
38 * not fit into the BSS due to the large buffer requirement of the
39 * upstream fastmap code. So the caller of ubispl_load_volumes needs
40 * to hand in a pointer to a free memory area where ubispl will place
41 * its data. The area is not required to be initialized.
45 typedef int (*ubispl_read_flash
)(int pnum
, int offset
, int len
, void *dst
);
48 * struct ubispl_info - description structure for fast ubi scan
49 * @ubi: Pointer to memory space for ubi scan info structure
50 * @peb_size: Physical erase block size
51 * @vid_offset: Offset of the VID header
52 * @leb_start: Start of the logical erase block, i.e. offset of data
53 * @peb_count: Number of physical erase blocks in the UBI FLASH area
55 * @peb_offset: Offset of PEB0 in the UBI FLASH area (aka MTD partition)
56 * to the real start of the FLASH in erase blocks.
57 * @fastmap: Enable fastmap attachment
58 * @read: Read function to access the flash
61 struct ubi_scan_info
*ubi
;
68 ubispl_read_flash read
;
72 * struct ubispl_load - structure to describe a volume to load
74 * @load_addr: Load address of the volume
82 * ubispl_load_volumes - Scan flash and load volumes
83 * @info: Pointer to the ubi scan info structure
84 * @lovls: Pointer to array of volumes to load
85 * @nrvols: Array size of @lovls
87 int ubispl_load_volumes(struct ubispl_info
*info
,
88 struct ubispl_load
*lvols
, int nrvols
);