| 1 | /* |
| 2 | * YAFFS: Yet another Flash File System . A NAND-flash specific file system. |
| 3 | * |
| 4 | * Copyright (C) 2002-2010 Aleph One Ltd. |
| 5 | * for Toby Churchill Ltd and Brightstar Engineering |
| 6 | * |
| 7 | * Created by Martin Fouts <Martin.Fouts@palmsource.com> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU Lesser General Public License version 2.1 as |
| 11 | * published by the Free Software Foundation. |
| 12 | * |
| 13 | * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. |
| 14 | */ |
| 15 | |
| 16 | #ifndef __YAFFS_CONFIG_H__ |
| 17 | #define __YAFFS_CONFIG_H__ |
| 18 | |
| 19 | #ifdef YAFFS_OUT_OF_TREE |
| 20 | |
| 21 | /* DO NOT UNSET THESE THREE. YAFFS2 will not compile if you do. */ |
| 22 | #define CONFIG_YAFFS_FS |
| 23 | #define CONFIG_YAFFS_YAFFS1 |
| 24 | #define CONFIG_YAFFS_YAFFS2 |
| 25 | |
| 26 | /* These options are independent of each other. Select those that matter. */ |
| 27 | |
| 28 | /* Default: Not selected */ |
| 29 | /* Meaning: Yaffs does its own ECC, rather than using MTD ECC */ |
| 30 | /* #define CONFIG_YAFFS_DOES_ECC */ |
| 31 | |
| 32 | /* Default: Selected */ |
| 33 | /* Meaning: Yaffs does its own ECC on tags for packed tags rather than use mtd */ |
| 34 | #define CONFIG_YAFFS_DOES_TAGS_ECC |
| 35 | |
| 36 | /* Default: Not selected */ |
| 37 | /* Meaning: ECC byte order is 'wrong'. Only meaningful if */ |
| 38 | /* CONFIG_YAFFS_DOES_ECC is set */ |
| 39 | /* #define CONFIG_YAFFS_ECC_WRONG_ORDER */ |
| 40 | |
| 41 | /* Default: Not selected */ |
| 42 | /* Meaning: Always test whether chunks are erased before writing to them. |
| 43 | Use during mtd debugging and init. */ |
| 44 | /* #define CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED */ |
| 45 | |
| 46 | /* Default: Not Selected */ |
| 47 | /* Meaning: At mount automatically empty all files from lost and found. */ |
| 48 | /* This is done to fix an old problem where rmdir was not checking for an */ |
| 49 | /* empty directory. This can also be achieved with a mount option. */ |
| 50 | #define CONFIG_YAFFS_EMPTY_LOST_AND_FOUND |
| 51 | |
| 52 | /* Default: Selected */ |
| 53 | /* Meaning: Cache short names, taking more RAM, but faster look-ups */ |
| 54 | #define CONFIG_YAFFS_SHORT_NAMES_IN_RAM |
| 55 | |
| 56 | /* Default: Unselected */ |
| 57 | /* Meaning: Select to disable block refreshing. */ |
| 58 | /* Block Refreshing periodically rewrites the oldest block. */ |
| 59 | /* #define CONFIG_DISABLE_BLOCK_REFRESHING */ |
| 60 | |
| 61 | /* Default: Unselected */ |
| 62 | /* Meaning: Select to disable background processing */ |
| 63 | /* #define CONFIG_DISABLE_BACKGROUND */ |
| 64 | |
| 65 | |
| 66 | /* Default: Selected */ |
| 67 | /* Meaning: Enable XATTR support */ |
| 68 | #define CONFIG_YAFFS_XATTR |
| 69 | |
| 70 | /* |
| 71 | Older-style on-NAND data format has a "page_status" byte to record |
| 72 | chunk/page state. This byte is zeroed when the page is discarded. |
| 73 | Choose this option if you have existing on-NAND data in this format |
| 74 | that you need to continue to support. New data written also uses the |
| 75 | older-style format. |
| 76 | Note: Use of this option generally requires that MTD's oob layout be |
| 77 | adjusted to use the older-style format. See notes on tags formats and |
| 78 | MTD versions in yaffs_mtdif1.c. |
| 79 | */ |
| 80 | /* Default: Not selected */ |
| 81 | /* Meaning: Use older-style on-NAND data format with page_status byte */ |
| 82 | /* #define CONFIG_YAFFS_9BYTE_TAGS */ |
| 83 | |
| 84 | #endif /* YAFFS_OUT_OF_TREE */ |
| 85 | |
| 86 | #endif /* __YAFFS_CONFIG_H__ */ |
| 87 | |
