www.pudn.com > yaffs2.zip > yaffs_fileem2k.h

/* 
 * YAFFS: Yet another FFS. A NAND-flash specific file system.  
 * yaffs_ramdisk.c: yaffs ram disk component 
 * 
 * Copyright (C) 2002 Aleph One Ltd. 
 * 
 * Created by Charles Manning  
 * 
 * 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. 
 * 
 */ 
 
#ifndef __FILEEM2K_H__ 
#define __FILEEM2K_H__ 
 
#if 1 
 
#define SIZE_IN_MB 512 
#define PAGE_DATA_SIZE (2048) 
#define PAGE_SPARE_SIZE  (64) 
#define PAGE_SIZE  (PAGE_DATA_SIZE + PAGE_SPARE_SIZE) 
#define PAGES_PER_BLOCK (64) 
#define BLOCK_DATA_SIZE (PAGE_DATA_SIZE * PAGES_PER_BLOCK) 
#define BLOCK_SIZE (PAGES_PER_BLOCK * (PAGE_SIZE)) 
#define BLOCKS_PER_MB ((1024*1024)/BLOCK_DATA_SIZE) 
#define SIZE_IN_BLOCKS (BLOCKS_PER_MB * SIZE_IN_MB) 
 
#else 
 
#define SIZE_IN_MB 128 
#define PAGE_DATA_SIZE (512) 
#define SPARE_SIZE  (16) 
#define PAGE_SIZE  (PAGE_DATA_SIZE + SPARE_SIZE) 
#define PAGES_PER_BLOCK (32) 
#define BLOCK_DATA_SIZE (PAGE_SIZE * PAGES_PER_BLOCK) 
#define BLOCK_SIZE (PAGES_PER_BLOCK * (PAGE_SIZE)) 
#define BLOCKS_PER_MB ((1024*1024)/BLOCK_DATA_SIZE) 
#define SIZE_IN_BLOCKS (BLOCKS_PER_MB * SIZE_IN_MB) 
 
#endif 
 
#endif