mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
|
/*
|
||
|
|
* Copyright (c) Thomas Gleixner <tglx@linutronix.de>
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: GPL 2.0+ BSD-3-Clause
|
||
|
|
*/
|
||
|
|
#ifndef __UBOOT_UBISPL_H
|
||
|
|
#define __UBOOT_UBISPL_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The following CONFIG options are relevant for UBISPL
|
||
|
|
*
|
||
|
|
* #define CONFIG_SPL_UBI_MAX_VOL_LEBS 256
|
||
|
|
*
|
||
|
|
* Defines the maximum number of logical erase blocks per loadable
|
||
|
|
* (static) volume to size the ubispl internal arrays.
|
||
|
|
*
|
||
|
|
* #define CONFIG_SPL_UBI_MAX_PEB_SIZE (256*1024)
|
||
|
|
*
|
||
|
|
* Defines the maximum physical erase block size to size the fastmap
|
||
|
|
* buffer for ubispl.
|
||
|
|
*
|
||
|
|
* #define CONFIG_SPL_UBI_MAX_PEBS 4096
|
||
|
|
*
|
||
|
|
* Define the maximum number of physical erase blocks to size the
|
||
|
|
* ubispl internal arrays.
|
||
|
|
*
|
||
|
|
* #define CONFIG_SPL_UBI_VOL_IDS 8
|
||
|
|
*
|
||
|
|
* Defines the maximum number of volumes in which UBISPL is
|
||
|
|
* interested. Limits the amount of memory for the scan data and
|
||
|
|
* speeds up the scan process as we simply ignore stuff which we dont
|
||
|
|
* want to load from the SPL anyway. So the volumes which can be
|
||
|
|
* loaded in the above example are ids 0 - 7
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The struct definition is in drivers/mtd/ubispl/ubispl.h. It does
|
||
|
|
* not fit into the BSS due to the large buffer requirement of the
|
||
|
|
* upstream fastmap code. So the caller of ubispl_load_volumes needs
|
||
|
|
* to hand in a pointer to a free memory area where ubispl will place
|
||
|
|
* its data. The area is not required to be initialized.
|
||
|
|
*/
|
||
|
|
struct ubi_scan_info;
|
||
|
|
|
||
|
|
typedef int (*ubispl_read_flash)(int pnum, int offset, int len, void *dst);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct ubispl_info - description structure for fast ubi scan
|
||
|
|
* @ubi: Pointer to memory space for ubi scan info structure
|
||
|
|
* @peb_size: Physical erase block size
|
||
|
|
* @vid_offset: Offset of the VID header
|
||
|
|
* @leb_start: Start of the logical erase block, i.e. offset of data
|
||
|
|
* @peb_count: Number of physical erase blocks in the UBI FLASH area
|
||
|
|
* aka MTD partition.
|
||
|
|
* @peb_offset: Offset of PEB0 in the UBI FLASH area (aka MTD partition)
|
||
|
|
* to the real start of the FLASH in erase blocks.
|
||
|
|
* @fastmap: Enable fastmap attachment
|
||
|
|
* @read: Read function to access the flash
|
||
|
|
*/
|
||
|
|
struct ubispl_info {
|
||
|
|
struct ubi_scan_info *ubi;
|
||
|
|
u32 peb_size;
|
||
|
|
u32 vid_offset;
|
||
|
|
u32 leb_start;
|
||
|
|
u32 peb_count;
|
||
|
|
u32 peb_offset;
|
||
|
|
int fastmap;
|
||
|
|
ubispl_read_flash read;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct ubispl_load - structure to describe a volume to load
|
||
|
|
* @vol_id: Volume id
|
||
|
|
* @load_addr: Load address of the volume
|
||
|
|
*/
|
||
|
|
struct ubispl_load {
|
||
|
|
int vol_id;
|
||
|
|
void *load_addr;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ubispl_load_volumes - Scan flash and load volumes
|
||
|
|
* @info: Pointer to the ubi scan info structure
|
||
|
|
* @lovls: Pointer to array of volumes to load
|
||
|
|
* @nrvols: Array size of @lovls
|
||
|
|
*/
|
||
|
|
int ubispl_load_volumes(struct ubispl_info *info,
|
||
|
|
struct ubispl_load *lvols, int nrvols);
|
||
|
|
|
||
|
|
#endif
|