X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=include%2Flinux%2Fmtd%2Fbbm.h;h=7239eb1125c7be9d794c670a30f0e7b4ea6e600b;hb=f9aa41023bd9f684d5d2ad8385efbb92a39b3c07;hp=25a3d3a3d1529629ad52daf433c9528bdaea9f36;hpb=326ea986ac150acdc7656d57fca647db80b50158;p=oweals%2Fu-boot.git diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 25a3d3a3d1..7239eb1125 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -1,16 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * linux/include/linux/mtd/bbm.h * * NAND family Bad Block Management (BBM) header file * - Bad Block Table (BBT) implementation * - * Copyright (c) 2005-2007 Samsung Electronics + * Copyright © 2005 Samsung Electronics * Kyungmin Park * - * Copyright (c) 2000-2005 + * Copyright © 2000-2005 * Thomas Gleixner * - * SPDX-License-Identifier: GPL-2.0+ */ #ifndef __LINUX_MTD_BBM_H #define __LINUX_MTD_BBM_H @@ -22,22 +22,21 @@ /** * struct nand_bbt_descr - bad block table descriptor - * @param options options for this descriptor - * @param pages the page(s) where we find the bbt, used with - * option BBT_ABSPAGE when bbt is searched, - * then we store the found bbts pages here. - * Its an array and supports up to 8 chips now - * @param offs offset of the pattern in the oob area of the page - * @param veroffs offset of the bbt version counter in the oob are of the page - * @param version version read from the bbt page during scan - * @param len length of the pattern, if 0 no pattern check is performed - * @param maxblocks maximum number of blocks to search for a bbt. This number of - * blocks is reserved at the end of the device - * where the tables are written. - * @param reserved_block_code if non-0, this pattern denotes a reserved - * (rather than bad) block in the stored bbt - * @param pattern pattern to identify bad block table or factory marked - * good / bad blocks, can be NULL, if len = 0 + * @options: options for this descriptor + * @pages: the page(s) where we find the bbt, used with option BBT_ABSPAGE + * when bbt is searched, then we store the found bbts pages here. + * Its an array and supports up to 8 chips now + * @offs: offset of the pattern in the oob area of the page + * @veroffs: offset of the bbt version counter in the oob are of the page + * @version: version read from the bbt page during scan + * @len: length of the pattern, if 0 no pattern check is performed + * @maxblocks: maximum number of blocks to search for a bbt. This number of + * blocks is reserved at the end of the device where the tables are + * written. + * @reserved_block_code: if non-0, this pattern denotes a reserved (rather than + * bad) block in the stored bbt + * @pattern: pattern to identify bad block table or factory marked good / + * bad blocks, can be NULL, if len = 0 * * Descriptor for the bad block table marker and the descriptor for the * pattern which identifies good and bad blocks. The assumption is made @@ -81,10 +80,6 @@ struct nand_bbt_descr { * with NAND_BBT_CREATE. */ #define NAND_BBT_CREATE_EMPTY 0x00000400 -/* Search good / bad pattern through all pages of a block */ -#define NAND_BBT_SCANALLPAGES 0x00000800 -/* Scan block empty during good / bad block scan */ -#define NAND_BBT_SCANEMPTY 0x00001000 /* Write bbt if neccecary */ #define NAND_BBT_WRITE 0x00002000 /* Read and write back block contents when writing bbt */ @@ -122,22 +117,27 @@ struct nand_bbt_descr { /* * Constants for oob configuration */ -#define ONENAND_BADBLOCK_POS 0 +#define NAND_SMALL_BADBLOCK_POS 5 +#define NAND_LARGE_BADBLOCK_POS 0 +#define ONENAND_BADBLOCK_POS 0 /* * Bad block scanning errors */ -#define ONENAND_BBT_READ_ERROR 1 -#define ONENAND_BBT_READ_ECC_ERROR 2 -#define ONENAND_BBT_READ_FATAL_ERROR 4 +#define ONENAND_BBT_READ_ERROR 1 +#define ONENAND_BBT_READ_ECC_ERROR 2 +#define ONENAND_BBT_READ_FATAL_ERROR 4 /** - * struct bbt_info - [GENERIC] Bad Block Table data structure - * @param bbt_erase_shift [INTERN] number of address bits in a bbt entry - * @param badblockpos [INTERN] position of the bad block marker in the oob area - * @param bbt [INTERN] bad block table pointer - * @param badblock_pattern [REPLACEABLE] bad block scan pattern used for initial bad block scan - * @param priv [OPTIONAL] pointer to private bbm date + * struct bbm_info - [GENERIC] Bad Block Table data structure + * @bbt_erase_shift: [INTERN] number of address bits in a bbt entry + * @badblockpos: [INTERN] position of the bad block marker in the oob area + * @options: options for this descriptor + * @bbt: [INTERN] bad block table pointer + * @isbad_bbt: function to determine if a block is bad + * @badblock_pattern: [REPLACEABLE] bad block scan pattern used for + * initial bad block scan + * @priv: [OPTIONAL] pointer to private bbm date */ struct bbm_info { int bbt_erase_shift; @@ -146,7 +146,7 @@ struct bbm_info { uint8_t *bbt; - int (*isbad_bbt) (struct mtd_info * mtd, loff_t ofs, int allowbbt); + int (*isbad_bbt)(struct mtd_info *mtd, loff_t ofs, int allowbbt); /* TODO Add more NAND specific fileds */ struct nand_bbt_descr *badblock_pattern; @@ -155,7 +155,7 @@ struct bbm_info { }; /* OneNAND BBT interface */ -extern int onenand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd); -extern int onenand_default_bbt (struct mtd_info *mtd); +extern int onenand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd); +extern int onenand_default_bbt(struct mtd_info *mtd); -#endif /* __LINUX_MTD_BBM_H */ +#endif /* __LINUX_MTD_BBM_H */