diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/include/linux/mtd/bbm.h | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/include/linux/mtd/bbm.h')
-rw-r--r-- | qemu/roms/u-boot/include/linux/mtd/bbm.h | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/include/linux/mtd/bbm.h b/qemu/roms/u-boot/include/linux/mtd/bbm.h new file mode 100644 index 000000000..25a3d3a3d --- /dev/null +++ b/qemu/roms/u-boot/include/linux/mtd/bbm.h @@ -0,0 +1,161 @@ +/* + * 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 + * Kyungmin Park <kyungmin.park@samsung.com> + * + * Copyright (c) 2000-2005 + * Thomas Gleixner <tglx@linuxtronix.de> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#ifndef __LINUX_MTD_BBM_H +#define __LINUX_MTD_BBM_H + +/* The maximum number of NAND chips in an array */ +#ifndef CONFIG_SYS_NAND_MAX_CHIPS +#define CONFIG_SYS_NAND_MAX_CHIPS 1 +#endif + +/** + * 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 + * + * Descriptor for the bad block table marker and the descriptor for the + * pattern which identifies good and bad blocks. The assumption is made + * that the pattern and the version count are always located in the oob area + * of the first block. + */ +struct nand_bbt_descr { + int options; + int pages[CONFIG_SYS_NAND_MAX_CHIPS]; + int offs; + int veroffs; + uint8_t version[CONFIG_SYS_NAND_MAX_CHIPS]; + int len; + int maxblocks; + int reserved_block_code; + uint8_t *pattern; +}; + +/* Options for the bad block table descriptors */ + +/* The number of bits used per block in the bbt on the device */ +#define NAND_BBT_NRBITS_MSK 0x0000000F +#define NAND_BBT_1BIT 0x00000001 +#define NAND_BBT_2BIT 0x00000002 +#define NAND_BBT_4BIT 0x00000004 +#define NAND_BBT_8BIT 0x00000008 +/* The bad block table is in the last good block of the device */ +#define NAND_BBT_LASTBLOCK 0x00000010 +/* The bbt is at the given page, else we must scan for the bbt */ +#define NAND_BBT_ABSPAGE 0x00000020 +/* bbt is stored per chip on multichip devices */ +#define NAND_BBT_PERCHIP 0x00000080 +/* bbt has a version counter at offset veroffs */ +#define NAND_BBT_VERSION 0x00000100 +/* Create a bbt if none exists */ +#define NAND_BBT_CREATE 0x00000200 +/* + * Create an empty BBT with no vendor information. Vendor's information may be + * unavailable, for example, if the NAND controller has a different data and OOB + * layout or if this information is already purged. Must be used in conjunction + * 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 */ +#define NAND_BBT_SAVECONTENT 0x00004000 +/* Search good / bad pattern on the first and the second page */ +#define NAND_BBT_SCAN2NDPAGE 0x00008000 +/* Search good / bad pattern on the last page of the eraseblock */ +#define NAND_BBT_SCANLASTPAGE 0x00010000 +/* + * Use a flash based bad block table. By default, OOB identifier is saved in + * OOB area. This option is passed to the default bad block table function. + */ +#define NAND_BBT_USE_FLASH 0x00020000 +/* + * Do not store flash based bad block table marker in the OOB area; store it + * in-band. + */ +#define NAND_BBT_NO_OOB 0x00040000 +/* + * Do not write new bad block markers to OOB; useful, e.g., when ECC covers + * entire spare area. Must be used with NAND_BBT_USE_FLASH. + */ +#define NAND_BBT_NO_OOB_BBM 0x00080000 + +/* + * Flag set by nand_create_default_bbt_descr(), marking that the nand_bbt_descr + * was allocated dynamicaly and must be freed in nand_release(). Has no meaning + * in nand_chip.bbt_options. + */ +#define NAND_BBT_DYNAMICSTRUCT 0x80000000 + +/* The maximum number of blocks to scan for a bbt */ +#define NAND_BBT_SCAN_MAXBLOCKS 4 + +/* + * Constants for oob configuration + */ +#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 + +/** + * 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 { + int bbt_erase_shift; + int badblockpos; + int options; + + uint8_t *bbt; + + int (*isbad_bbt) (struct mtd_info * mtd, loff_t ofs, int allowbbt); + + /* TODO Add more NAND specific fileds */ + struct nand_bbt_descr *badblock_pattern; + + void *priv; +}; + +/* 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); + +#endif /* __LINUX_MTD_BBM_H */ |