diff options
Diffstat (limited to 'drivers/mtd/ubi/ubi-media.h')
| -rw-r--r-- | drivers/mtd/ubi/ubi-media.h | 40 |
1 files changed, 14 insertions, 26 deletions
diff --git a/drivers/mtd/ubi/ubi-media.h b/drivers/mtd/ubi/ubi-media.h index ac2b24d1783d..2c9cd3b6434f 100644 --- a/drivers/mtd/ubi/ubi-media.h +++ b/drivers/mtd/ubi/ubi-media.h @@ -1,28 +1,12 @@ +/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */ /* - * Copyright (c) International Business Machines Corp., 2006 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See - * the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * + * Copyright (C) International Business Machines Corp., 2006 * Authors: Artem Bityutskiy (Битюцкий Артём) * Thomas Gleixner * Frank Haverkamp * Oliver Lohmann * Andreas Arnez - */ - -/* + * * This file defines the layout of UBI headers and all the other UBI on-flash * data structures. */ @@ -61,6 +45,11 @@ enum { * Volume flags used in the volume table record. * * @UBI_VTBL_AUTORESIZE_FLG: auto-resize this volume + * @UBI_VTBL_SKIP_CRC_CHECK_FLG: skip the CRC check done on a static volume at + * open time. Should only be set on volumes that + * are used by upper layers doing this kind of + * check. Main use-case for this flag is + * boot-time reduction * * %UBI_VTBL_AUTORESIZE_FLG flag can be set only for one volume in the volume * table. UBI automatically re-sizes the volume which has this flag and makes @@ -92,6 +81,7 @@ enum { */ enum { UBI_VTBL_AUTORESIZE_FLG = 0x01, + UBI_VTBL_SKIP_CRC_CHECK_FLG = 0x02, }; /* @@ -141,7 +131,7 @@ enum { * is changed radically. This field is duplicated in the volume identifier * header. * - * The @vid_hdr_offset and @data_offset fields contain the offset of the the + * The @vid_hdr_offset and @data_offset fields contain the offset of the * volume identifier header and user data, relative to the beginning of the * physical eraseblock. These values have to be the same for all physical * eraseblocks. @@ -229,7 +219,7 @@ struct ubi_ec_hdr { * copy. UBI also calculates data CRC when the data is moved and stores it at * the @data_crc field of the copy (P1). So when UBI needs to pick one physical * eraseblock of two (P or P1), the @copy_flag of the newer one (P1) is - * examined. If it is cleared, the situation* is simple and the newer one is + * examined. If it is cleared, the situation is simple and the newer one is * picked. If it is set, the data CRC of the copy (P1) is examined. If the CRC * checksum is correct, this physical eraseblock is selected (P1). Otherwise * the older one (P) is selected. @@ -389,7 +379,7 @@ struct ubi_vtbl_record { #define UBI_FM_POOL_MAGIC 0x67AF4D08 #define UBI_FM_EBA_MAGIC 0xf0c040a8 -/* A fastmap supber block can be located between PEB 0 and +/* A fastmap super block can be located between PEB 0 and * UBI_FM_MAX_START */ #define UBI_FM_MAX_START 64 @@ -403,8 +393,6 @@ struct ubi_vtbl_record { #define UBI_FM_MIN_POOL_SIZE 8 #define UBI_FM_MAX_POOL_SIZE 256 -#define UBI_FM_WL_POOL_SIZE 25 - /** * struct ubi_fm_sb - UBI fastmap super block * @magic: fastmap super block magic number (%UBI_FM_SB_MAGIC) @@ -502,7 +490,7 @@ struct ubi_fm_volhdr { /* struct ubi_fm_volhdr is followed by one struct ubi_fm_eba records */ /** - * struct ubi_fm_eba - denotes an association beween a PEB and LEB + * struct ubi_fm_eba - denotes an association between a PEB and LEB * @magic: EBA table magic number * @reserved_pebs: number of table entries * @pnum: PEB number of LEB (LEB is the index) @@ -510,6 +498,6 @@ struct ubi_fm_volhdr { struct ubi_fm_eba { __be32 magic; __be32 reserved_pebs; - __be32 pnum[0]; + __be32 pnum[]; } __packed; #endif /* !__UBI_MEDIA_H__ */ |