X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=direct%2Fbasic-test%2Fyaffs_fileem.c;fp=direct%2Fbasic-test%2Fyaffs_fileem.c;h=0000000000000000000000000000000000000000;hp=96a64c61a32c1084abf9c361ececaf32351ebb9a;hb=c08faae4258b29a794ad55ca160c5a247145c838;hpb=87b33ecd1898c99b9aa2b0abcbb3e6002d6b3532 diff --git a/direct/basic-test/yaffs_fileem.c b/direct/basic-test/yaffs_fileem.c deleted file mode 100644 index 96a64c6..0000000 --- a/direct/basic-test/yaffs_fileem.c +++ /dev/null @@ -1,214 +0,0 @@ -/* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * - * Copyright (C) 2002-2011 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * 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. - */ - -/* - * This provides a YAFFS nand emulation on a file. - * This is only intended as test code to test persistence etc. - */ - -#include "yportenv.h" -#include "yaffs_trace.h" - -#include "yaffs_flashif.h" -#include "yaffs_guts.h" - -#include -#include -#include -#include - - - -#define SIZE_IN_MB 16 - -#define BLOCK_SIZE (32 * 528) -#define BLOCKS_PER_MEG ((1024*1024)/(32 * 512)) - - - -typedef struct -{ - u8 data[528]; // Data + spare -} yflash_Page; - -typedef struct -{ - yflash_Page page[32]; // The pages in the block - -} yflash_Block; - - - -typedef struct -{ - int handle; - int nBlocks; -} yflash_Device; - -static yflash_Device filedisk; - -static int CheckInit(struct yaffs_dev *dev) -{ - static int initialised = 0; - - int i; - - - int fSize; - int written; - - yflash_Page p; - - if(initialised) - { - return YAFFS_OK; - } - - initialised = 1; - - - filedisk.nBlocks = (SIZE_IN_MB * 1024 * 1024)/(16 * 1024); - - filedisk.handle = open("emfile-512-0", O_RDWR | O_CREAT, S_IREAD | S_IWRITE); - - if(filedisk.handle < 0) - { - perror("Failed to open yaffs emulation file"); - return YAFFS_FAIL; - } - - - fSize = lseek(filedisk.handle,0,SEEK_END); - - if(fSize < SIZE_IN_MB * 1024 * 1024) - { - printf("Creating yaffs emulation file\n"); - - lseek(filedisk.handle,0,SEEK_SET); - - memset(&p,0xff,sizeof(yflash_Page)); - - for(i = 0; i < SIZE_IN_MB * 1024 * 1024; i+= 512) - { - written = write(filedisk.handle,&p,sizeof(yflash_Page)); - - if(written != sizeof(yflash_Page)) - { - printf("Write failed\n"); - return YAFFS_FAIL; - } - } - } - - return 1; -} - -int yflash_WriteChunkToNAND(struct yaffs_dev *dev,int nand_chunk,const u8 *data, const struct yaffs_spare *spare) -{ - int written; - - CheckInit(dev); - - - - if(data) - { - lseek(filedisk.handle,nand_chunk * 528,SEEK_SET); - written = write(filedisk.handle,data,512); - - if(written != 512) return YAFFS_FAIL; - } - - if(spare) - { - lseek(filedisk.handle,nand_chunk * 528 + 512,SEEK_SET); - written = write(filedisk.handle,spare,16); - - if(written != 16) return YAFFS_FAIL; - } - - - return YAFFS_OK; - -} - - -int yflash_ReadChunkFromNAND(struct yaffs_dev *dev,int nand_chunk, u8 *data, struct yaffs_spare *spare) -{ - int nread; - - CheckInit(dev); - - - - if(data) - { - lseek(filedisk.handle,nand_chunk * 528,SEEK_SET); - nread = read(filedisk.handle,data,512); - - if(nread != 512) return YAFFS_FAIL; - } - - if(spare) - { - lseek(filedisk.handle,nand_chunk * 528 + 512,SEEK_SET); - nread= read(filedisk.handle,spare,16); - - if(nread != 16) return YAFFS_FAIL; - } - - - return YAFFS_OK; - -} - - -int yflash_EraseBlockInNAND(struct yaffs_dev *dev, int blockNumber) -{ - - int i; - - CheckInit(dev); - - if(blockNumber < 0 || blockNumber >= filedisk.nBlocks) - { - yaffs_trace(YAFFS_TRACE_ALWAYS, - "Attempt to erase non-existant block %d\n", - blockNumber); - return YAFFS_FAIL; - } - else - { - - yflash_Page pg; - - memset(&pg,0xff,sizeof(yflash_Page)); - - lseek(filedisk.handle, blockNumber * 32 * 528, SEEK_SET); - - for(i = 0; i < 32; i++) - { - write(filedisk.handle,&pg,528); - } - return YAFFS_OK; - } - -} - -int yflash_InitialiseNAND(struct yaffs_dev *dev) -{ - - return YAFFS_OK; -} - -