X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=direct%2Fyaffscfg.c;fp=direct%2Fyaffscfg.c;h=42c9dd2bbcfa3b363918d3f5b52542b0d7365992;hp=0000000000000000000000000000000000000000;hb=2e51ed27a28a076ee9eb870ba8c0eb09b8114b01;hpb=363520161b021b7ac870c269064606e3f16feeeb

diff --git a/direct/yaffscfg.c b/direct/yaffscfg.c
new file mode 100644
index 0000000..42c9dd2
--- /dev/null
+++ b/direct/yaffscfg.c
@@ -0,0 +1,122 @@
+/*
+ * YAFFS: Yet another FFS. A NAND-flash specific file system.
+ * 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 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;
+}
+
+
+
+