Mercurial > yaffs-ecoscentric-gpl

annotate moduleconfig.h @ 300:4d9d442da93f

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Allow the disabling of tags ECC
author charles <charles>
date Wed, 14 Oct 2009 00:01:56 +0000
parents c0dfae9e8073
children 97a4bd3d225e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
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3 *
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4 * Copyright (C) 2002-2007 Aleph One Ltd.
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5 * for Toby Churchill Ltd and Brightstar Engineering
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6 *
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7 * Created by Martin Fouts <Martin.Fouts@palmsource.com>
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8 *
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9 * This program is free software; you can redistribute it and/or modify
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10 * it under the terms of the GNU Lesser General Public License version 2.1 as
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11 * published by the Free Software Foundation.
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12 *
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13 * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
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14 */
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16 #ifndef __YAFFS_CONFIG_H__
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17 #define __YAFFS_CONFIG_H__
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18
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19 #ifdef YAFFS_OUT_OF_TREE
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20
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21 /* DO NOT UNSET THESE THREE. YAFFS2 will not compile if you do. */
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22 #define CONFIG_YAFFS_FS
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23 #define CONFIG_YAFFS_YAFFS1
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24 #define CONFIG_YAFFS_YAFFS2
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26 /* These options are independent of each other. Select those that matter. */
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27
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28 /* Default: Not selected */
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29 /* Meaning: Yaffs does its own ECC, rather than using MTD ECC */
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30 /* #define CONFIG_YAFFS_DOES_ECC */
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32 /* Default: Selected */
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33 /* Meaning: Yaffs does its own ECC on tags for packed tags rather than use mtd */
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34 #define CONFIG_YAFFS_DOES_TAGS_ECC
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35
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36 /* Default: Not selected */
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37 /* Meaning: ECC byte order is 'wrong'. Only meaningful if */
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38 /* CONFIG_YAFFS_DOES_ECC is set */
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39 /* #define CONFIG_YAFFS_ECC_WRONG_ORDER */
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41 /* Default: Selected */
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42 /* Meaning: Disables testing whether chunks are erased before writing to them*/
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43 #define CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK
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45 /* Default: Selected */
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46 /* Meaning: Cache short names, taking more RAM, but faster look-ups */
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47 #define CONFIG_YAFFS_SHORT_NAMES_IN_RAM
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49 /* Default: 10 */
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50 /* Meaning: set the count of blocks to reserve for checkpointing */
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51 #define CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS 10
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52
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53 /*
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54 Older-style on-NAND data format has a "pageStatus" byte to record
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55 chunk/page state. This byte is zeroed when the page is discarded.
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56 Choose this option if you have existing on-NAND data in this format
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57 that you need to continue to support. New data written also uses the
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58 older-style format.
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59 Note: Use of this option generally requires that MTD's oob layout be
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60 adjusted to use the older-style format. See notes on tags formats and
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61 MTD versions in yaffs_mtdif1.c.
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62 */
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63 /* Default: Not selected */
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64 /* Meaning: Use older-style on-NAND data format with pageStatus byte */
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65 /* #define CONFIG_YAFFS_9BYTE_TAGS */
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67 #endif /* YAFFS_OUT_OF_TREE */
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69 #endif /* __YAFFS_CONFIG_H__ */