2 * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
4 * Copyright (C) 2002-2010 Aleph One Ltd.
5 * for Toby Churchill Ltd and Brightstar Engineering
7 * Created by Charles Manning <charles@aleph1.co.uk>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
15 * yaffscfg2k.c The configuration for the "direct" use of yaffs.
17 * This file is intended to be modified to your requirements.
18 * There is no need to redistribute this file.
23 #include "yaffs_fileem2k.h"
24 #include "yaffs_nandemul2k.h"
25 #include "yaffs_norif1.h"
26 #include "yaffs_trace.h"
30 unsigned yaffs_traceMask =
37 YAFFS_TRACE_ALLOCATE |
38 YAFFS_TRACE_BAD_BLOCKS |
44 static int yaffsfs_lastError;
46 void yaffsfs_SetError(int err)
48 //Do whatever to set error
49 yaffsfs_lastError = err;
53 int yaffsfs_GetLastError(void)
55 return yaffsfs_lastError;
58 void yaffsfs_Lock(void)
62 void yaffsfs_Unlock(void)
66 __u32 yaffsfs_CurrentTime(void)
72 static int yaffs_kill_alloc = 0;
73 static size_t total_malloced = 0;
74 static size_t malloc_limit = 0 & 6000000;
76 void *yaffs_malloc(size_t size)
81 if(malloc_limit && malloc_limit <(total_malloced + size) )
86 total_malloced += size;
90 void yaffs_free(void *ptr)
95 void yaffsfs_LocalInitialisation(void)
97 // Define locking semaphore.
102 #include "yaffs_ramdisk.h"
103 #include "yaffs_flashif.h"
104 #include "yaffs_flashif2.h"
105 #include "yaffs_nandemul2k.h"
107 static yaffs_Device ram1Dev;
108 static yaffs_Device flashDev;
109 static yaffs_Device ram2kDev;
110 static yaffs_Device m18_1Dev;
112 static yaffsfs_DeviceConfiguration yaffsfs_config[] = {
114 { "/ram1", &ram1Dev},
115 { "/M18-1", &m18_1Dev},
116 { "/yaffs2", &flashDev},
117 { "/ram2k", &ram2kDev},
118 { NULL, NULL } /* Null entry to terminate list */
122 int yaffs_StartUp(void)
124 // Stuff to configure YAFFS
125 // Stuff to initialise anything special (eg lock semaphore).
126 yaffsfs_LocalInitialisation();
130 memset(&ram1Dev,0,sizeof(ram1Dev));
131 ram1Dev.param.totalBytesPerChunk = 512;
132 ram1Dev.param.nChunksPerBlock = 32;
133 ram1Dev.param.nReservedBlocks = 2; // Set this smaller for RAM
134 ram1Dev.param.startBlock = 0; // Can use block 0
135 ram1Dev.param.endBlock = 127; // Last block in 2MB.
136 //ram1Dev.param.useNANDECC = 1;
137 ram1Dev.param.nShortOpCaches = 0; // Disable caching on this device.
138 ram1Dev.context = (void *) 0; // Used to identify the device in fstat.
139 ram1Dev.param.writeChunkWithTagsToNAND = yramdisk_WriteChunkWithTagsToNAND;
140 ram1Dev.param.readChunkWithTagsFromNAND = yramdisk_ReadChunkWithTagsFromNAND;
141 ram1Dev.param.eraseBlockInNAND = yramdisk_EraseBlockInNAND;
142 ram1Dev.param.initialiseNAND = yramdisk_InitialiseNAND;
144 // /M18-1 yaffs1 on M18 nor sim
145 memset(&m18_1Dev,0,sizeof(m18_1Dev));
146 m18_1Dev.param.totalBytesPerChunk = 1024;
147 m18_1Dev.param.nChunksPerBlock =248;
148 m18_1Dev.param.nReservedBlocks = 2;
149 m18_1Dev.param.startBlock = 0; // Can use block 0
150 m18_1Dev.param.endBlock = 31; // Last block
151 m18_1Dev.param.useNANDECC = 0; // use YAFFS's ECC
152 m18_1Dev.param.nShortOpCaches = 10; // Use caches
153 m18_1Dev.context = (void *) 1; // Used to identify the device in fstat.
154 m18_1Dev.param.writeChunkToNAND = ynorif1_WriteChunkToNAND;
155 m18_1Dev.param.readChunkFromNAND = ynorif1_ReadChunkFromNAND;
156 m18_1Dev.param.eraseBlockInNAND = ynorif1_EraseBlockInNAND;
157 m18_1Dev.param.initialiseNAND = ynorif1_InitialiseNAND;
158 m18_1Dev.param.deinitialiseNAND = ynorif1_DeinitialiseNAND;
161 // /yaffs2 yaffs2 file emulation
162 // 2kpage/64chunk per block
164 memset(&flashDev,0,sizeof(flashDev));
166 flashDev.param.totalBytesPerChunk = 2048;
167 flashDev.param.nChunksPerBlock = 64;
168 flashDev.param.nReservedBlocks = 5;
169 flashDev.param.inbandTags = 0;
170 flashDev.param.startBlock = 0;
171 flashDev.param.endBlock = yflash2_GetNumberOfBlocks()-1;
172 flashDev.param.isYaffs2 = 1;
173 flashDev.param.useNANDECC=1;
174 flashDev.param.wideTnodesDisabled=0;
175 flashDev.param.refreshPeriod = 1000;
176 flashDev.param.nShortOpCaches = 10; // Use caches
177 flashDev.context = (void *) 2; // Used to identify the device in fstat.
178 flashDev.param.writeChunkWithTagsToNAND = yflash2_WriteChunkWithTagsToNAND;
179 flashDev.param.readChunkWithTagsFromNAND = yflash2_ReadChunkWithTagsFromNAND;
180 flashDev.param.eraseBlockInNAND = yflash2_EraseBlockInNAND;
181 flashDev.param.initialiseNAND = yflash2_InitialiseNAND;
182 flashDev.param.markNANDBlockBad = yflash2_MarkNANDBlockBad;
183 flashDev.param.queryNANDBlock = yflash2_QueryNANDBlock;
184 flashDev.param.enableXattr = 1;
187 yaffs_initialise(yaffsfs_config);