summaryrefslogtreecommitdiff
path: root/fs/yaffs2/direct/yaffscfg.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/yaffs2/direct/yaffscfg.c')
-rw-r--r--fs/yaffs2/direct/yaffscfg.c144
1 files changed, 144 insertions, 0 deletions
diff --git a/fs/yaffs2/direct/yaffscfg.c b/fs/yaffs2/direct/yaffscfg.c
new file mode 100644
index 0000000..b1d311e
--- /dev/null
+++ b/fs/yaffs2/direct/yaffscfg.c
@@ -0,0 +1,144 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2007 Aleph One Ltd.
+ * for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Charles Manning <charles@aleph1.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * yaffscfg.c The configuration for the "direct" use of yaffs.
+ *
+ * This file is intended to be modified to your requirements.
+ * There is no need to redistribute this file.
+ */
+
+#include "yaffscfg.h"
+#include "yaffsfs.h"
+#include <errno.h>
+
+unsigned yaffs_traceMask = 0xFFFFFFFF;
+
+
+void yaffsfs_SetError(int err)
+{
+ //Do whatever to set error
+ errno = err;
+}
+
+void yaffsfs_Lock(void)
+{
+}
+
+void yaffsfs_Unlock(void)
+{
+}
+
+__u32 yaffsfs_CurrentTime(void)
+{
+ return 0;
+}
+
+void *yaffs_malloc(size_t size)
+{
+ return malloc(size);
+}
+
+void yaffs_free(void *ptr)
+{
+ free(ptr);
+}
+
+void yaffsfs_LocalInitialisation(void)
+{
+ // Define locking semaphore.
+}
+
+// Configuration for:
+// /ram 2MB ramdisk
+// /boot 2MB boot disk (flash)
+// /flash 14MB flash disk (flash)
+// NB Though /boot and /flash occupy the same physical device they
+// are still disticnt "yaffs_Devices. You may think of these as "partitions"
+// using non-overlapping areas in the same device.
+//
+
+#include "yaffs_ramdisk.h"
+#include "yaffs_flashif.h"
+
+static yaffs_Device ramDev;
+static yaffs_Device bootDev;
+static yaffs_Device flashDev;
+
+static yaffsfs_DeviceConfiguration yaffsfs_config[] = {
+
+ { "/ram", &ramDev},
+ { "/boot", &bootDev},
+ { "/flash", &flashDev},
+ {(void *)0,(void *)0}
+};
+
+
+int yaffs_StartUp(void)
+{
+ // Stuff to configure YAFFS
+ // Stuff to initialise anything special (eg lock semaphore).
+ yaffsfs_LocalInitialisation();
+
+ // Set up devices
+
+ // /ram
+ ramDev.nBytesPerChunk = 512;
+ ramDev.nChunksPerBlock = 32;
+ ramDev.nReservedBlocks = 2; // Set this smaller for RAM
+ ramDev.startBlock = 1; // Can't use block 0
+ ramDev.endBlock = 127; // Last block in 2MB.
+ ramDev.useNANDECC = 1;
+ ramDev.nShortOpCaches = 0; // Disable caching on this device.
+ ramDev.genericDevice = (void *) 0; // Used to identify the device in fstat.
+ ramDev.writeChunkWithTagsToNAND = yramdisk_WriteChunkWithTagsToNAND;
+ ramDev.readChunkWithTagsFromNAND = yramdisk_ReadChunkWithTagsFromNAND;
+ ramDev.eraseBlockInNAND = yramdisk_EraseBlockInNAND;
+ ramDev.initialiseNAND = yramdisk_InitialiseNAND;
+
+ // /boot
+ bootDev.nBytesPerChunk = 612;
+ bootDev.nChunksPerBlock = 32;
+ bootDev.nReservedBlocks = 5;
+ bootDev.startBlock = 1; // Can't use block 0
+ bootDev.endBlock = 127; // Last block in 2MB.
+ bootDev.useNANDECC = 0; // use YAFFS's ECC
+ bootDev.nShortOpCaches = 10; // Use caches
+ bootDev.genericDevice = (void *) 1; // Used to identify the device in fstat.
+ bootDev.writeChunkToNAND = yflash_WriteChunkToNAND;
+ bootDev.readChunkFromNAND = yflash_ReadChunkFromNAND;
+ bootDev.eraseBlockInNAND = yflash_EraseBlockInNAND;
+ bootDev.initialiseNAND = yflash_InitialiseNAND;
+
+ // /flash
+ flashDev.nBytesPerChunk = 512;
+ flashDev.nChunksPerBlock = 32;
+ flashDev.nReservedBlocks = 5;
+ flashDev.startBlock = 128; // First block after 2MB
+ flashDev.endBlock = 1023; // Last block in 16MB
+ flashDev.useNANDECC = 0; // use YAFFS's ECC
+ flashDev.nShortOpCaches = 10; // Use caches
+ flashDev.genericDevice = (void *) 2; // Used to identify the device in fstat.
+ flashDev.writeChunkToNAND = yflash_WriteChunkToNAND;
+ flashDev.readChunkFromNAND = yflash_ReadChunkFromNAND;
+ flashDev.eraseBlockInNAND = yflash_EraseBlockInNAND;
+ flashDev.initialiseNAND = yflash_InitialiseNAND;
+
+ yaffs_initialise(yaffsfs_config);
+
+ return 0;
+}
+
+
+
+