fs/yaffs2/yaffscfg.c - u-boot - Git at Google

 /*
  * 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.
  */

 /* XXX U-BOOT XXX */
 #include <common.h>

 #include <config.h>
 #include "nand.h"
 #include "yaffscfg.h"
 #include "yaffsfs.h"
 #include "yaffs_packedtags2.h"
 #include "yaffs_mtdif.h"
 #include "yaffs_mtdif2.h"
 #if 0
 #include <errno.h>
 #else
 #include "malloc.h"
 #endif

 unsigned yaffs_traceMask = 0x0; /* Disable logging */
 static int yaffs_errno = 0;

 void yaffsfs_SetError(int err)
 {
 	//Do whatever to set error
 	yaffs_errno = err;
 }

 int yaffsfs_GetError(void)
 {
 	return yaffs_errno;
 }

 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 int isMounted = 0;
 #define MOUNT_POINT "/flash"
 extern nand_info_t nand_info[];

 /* XXX U-BOOT XXX */
 #if 0
 static yaffs_Device ramDev;
 static yaffs_Device bootDev;
 static yaffs_Device flashDev;
 #endif

 static yaffsfs_DeviceConfiguration yaffsfs_config[] = {
 /* XXX U-BOOT XXX */
 #if 0
 	{ "/ram", &ramDev},
 	{ "/boot", &bootDev},
 	{ "/flash", &flashDev},
 #else
 	{ MOUNT_POINT, 0},
 #endif
 	{(void *)0,(void *)0}
 };


 int yaffs_StartUp(void)
 {
 	struct mtd_info *mtd = &nand_info[0];
 	int yaffsVersion = 2;
 	int nBlocks;

 	yaffs_Device *flashDev = calloc(1, sizeof(yaffs_Device));
 	yaffsfs_config[0].dev = flashDev;

 	/* store the mtd device for later use */
 	flashDev->genericDevice = mtd;

 	// Stuff to configure YAFFS
 	// Stuff to initialise anything special (eg lock semaphore).
 	yaffsfs_LocalInitialisation();

 	// Set up devices

 /* XXX U-BOOT XXX */
 #if 0
 	// /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;
 #endif

 		// /flash
 	flashDev->nReservedBlocks = 5;
 //  flashDev->nShortOpCaches = (options.no_cache) ? 0 : 10;
 	flashDev->nShortOpCaches = 10; // Use caches
 	flashDev->useNANDECC = 0; // do not use YAFFS's ECC

 	if (yaffsVersion == 2)
 	{
 		flashDev->writeChunkWithTagsToNAND = nandmtd2_WriteChunkWithTagsToNAND;
 		flashDev->readChunkWithTagsFromNAND = nandmtd2_ReadChunkWithTagsFromNAND;
 		flashDev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad;
 		flashDev->queryNANDBlock = nandmtd2_QueryNANDBlock;
 		flashDev->spareBuffer = YMALLOC(mtd->oobsize);
 		flashDev->isYaffs2 = 1;
 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
 		flashDev->nDataBytesPerChunk = mtd->writesize;
 		flashDev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
 #else
 		flashDev->nDataBytesPerChunk = mtd->oobblock;
 		flashDev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
 #endif
 		nBlocks = mtd->size / mtd->erasesize;

 		flashDev->nCheckpointReservedBlocks = 10;
 		flashDev->startBlock = 0;
 		flashDev->endBlock = nBlocks - 1;
 	}
 	else
 	{
 		flashDev->writeChunkToNAND = nandmtd_WriteChunkToNAND;
 		flashDev->readChunkFromNAND = nandmtd_ReadChunkFromNAND;
 		flashDev->isYaffs2 = 0;
 		nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
 		flashDev->startBlock = 320;
 		flashDev->endBlock = nBlocks - 1;
 		flashDev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
 		flashDev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
 	}

 	/* ... and common functions */
 	flashDev->eraseBlockInNAND = nandmtd_EraseBlockInNAND;
 	flashDev->initialiseNAND = nandmtd_InitialiseNAND;

 	yaffs_initialise(yaffsfs_config);

 	return 0;
 }


 void make_a_file(char *yaffsName,char bval,int sizeOfFile)
 {
 	int outh;
 	int i;
 	unsigned char buffer[100];

 	outh = yaffs_open(yaffsName, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
 	if (outh < 0)
 	{
 		printf("Error opening file: %d\n", outh);
 		return;
 	}

 	memset(buffer,bval,100);

 	do{
 		i = sizeOfFile;
 		if(i > 100) i = 100;
 		sizeOfFile -= i;

 		yaffs_write(outh,buffer,i);

 	} while (sizeOfFile > 0);


 	yaffs_close(outh);
 }

 void read_a_file(char *fn)
 {
 	int h;
 	int i = 0;
 	unsigned char b;

 	h = yaffs_open(fn, O_RDWR,0);
 	if(h<0)
 	{
 		printf("File not found\n");
 		return;
 	}

 	while(yaffs_read(h,&b,1)> 0)
 	{
 		printf("%02x ",b);
 		i++;
 		if(i > 32)
 		{
 		   printf("\n");
 		   i = 0;;
 		 }
 	}
 	printf("\n");
 	yaffs_close(h);
 }

 void cmd_yaffs_mount(char *mp)
 {
 	yaffs_StartUp();
 	int retval = yaffs_mount(mp);
 	if( retval != -1)
 		isMounted = 1;
 	else
 		printf("Error mounting %s, return value: %d\n", mp, yaffsfs_GetError());
 }

 static void checkMount(void)
 {
 	if( !isMounted )
 	{
 		cmd_yaffs_mount(MOUNT_POINT);
 	}
 }

 void cmd_yaffs_umount(char *mp)
 {
 	checkMount();
 	if( yaffs_unmount(mp) == -1)
 		printf("Error umounting %s, return value: %d\n", mp, yaffsfs_GetError());
 }

 void cmd_yaffs_write_file(char *yaffsName,char bval,int sizeOfFile)
 {
 	checkMount();
 	make_a_file(yaffsName,bval,sizeOfFile);
 }


 void cmd_yaffs_read_file(char *fn)
 {
 	checkMount();
 	read_a_file(fn);
 }


 void cmd_yaffs_mread_file(char *fn, char *addr)
 {
 	int h;
 	struct yaffs_stat s;

 	checkMount();

 	yaffs_stat(fn,&s);

 	printf ("Copy %s to 0x%p... ", fn, addr);
 	h = yaffs_open(fn, O_RDWR,0);
 	if(h<0)
 	{
 		printf("File not found\n");
 		return;
 	}

 	yaffs_read(h,addr,(int)s.st_size);
 	printf("\t[DONE]\n");

 	yaffs_close(h);
 }


 void cmd_yaffs_mwrite_file(char *fn, char *addr, int size)
 {
 	int outh;

 	checkMount();
 	outh = yaffs_open(fn, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
 	if (outh < 0)
 	{
 		printf("Error opening file: %d\n", outh);
 	}

 	yaffs_write(outh,addr,size);

 	yaffs_close(outh);
 }


 void cmd_yaffs_ls(const char *mountpt, int longlist)
 {
 	int i;
 	yaffs_DIR *d;
 	yaffs_dirent *de;
 	struct yaffs_stat stat;
 	char tempstr[255];

 	checkMount();
 	d = yaffs_opendir(mountpt);

 	if(!d)
 	{
 		printf("opendir failed\n");
 	}
 	else
 	{
 		for(i = 0; (de = yaffs_readdir(d)) != NULL; i++)
 		{
 			if (longlist)
 			{
 				sprintf(tempstr, "%s/%s", mountpt, de->d_name);
 				yaffs_stat(tempstr, &stat);
 				printf("%-25s\t%7ld\n",de->d_name, stat.st_size);
 			}
 			else
 			{
 				printf("%s\n",de->d_name);
 			}
 		}
 	}
 }


 void cmd_yaffs_mkdir(const char *dir)
 {
 	checkMount();

 	int retval = yaffs_mkdir(dir, 0);

 	if ( retval < 0)
 		printf("yaffs_mkdir returning error: %d\n", retval);
 }

 void cmd_yaffs_rmdir(const char *dir)
 {
 	checkMount();

 	int retval = yaffs_rmdir(dir);

 	if ( retval < 0)
 		printf("yaffs_rmdir returning error: %d\n", retval);
 }

 void cmd_yaffs_rm(const char *path)
 {
 	checkMount();

 	int retval = yaffs_unlink(path);

 	if ( retval < 0)
 		printf("yaffs_unlink returning error: %d\n", retval);
 }

 void cmd_yaffs_mv(const char *oldPath, const char *newPath)
 {
 	checkMount();

 	int retval = yaffs_rename(newPath, oldPath);

 	if ( retval < 0)
 		printf("yaffs_unlink returning error: %d\n", retval);
 }
	/*
	* 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.
	*/

	/* XXX U-BOOT XXX */
	#include <common.h>

	#include <config.h>
	#include "nand.h"
	#include "yaffscfg.h"
	#include "yaffsfs.h"
	#include "yaffs_packedtags2.h"
	#include "yaffs_mtdif.h"
	#include "yaffs_mtdif2.h"
	#if 0
	#include <errno.h>
	#else
	#include "malloc.h"
	#endif

	unsigned yaffs_traceMask = 0x0; /* Disable logging */
	static int yaffs_errno = 0;

	void yaffsfs_SetError(int err)
	{
	//Do whatever to set error
	yaffs_errno = err;
	}

	int yaffsfs_GetError(void)
	{
	return yaffs_errno;
	}

	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 int isMounted = 0;
	#define MOUNT_POINT "/flash"
	extern nand_info_t nand_info[];

	/* XXX U-BOOT XXX */
	#if 0
	static yaffs_Device ramDev;
	static yaffs_Device bootDev;
	static yaffs_Device flashDev;
	#endif

	static yaffsfs_DeviceConfiguration yaffsfs_config[] = {
	/* XXX U-BOOT XXX */
	#if 0
	{ "/ram", &ramDev},
	{ "/boot", &bootDev},
	{ "/flash", &flashDev},
	#else
	{ MOUNT_POINT, 0},
	#endif
	{(void )0,(void )0}
	};


	int yaffs_StartUp(void)
	{
	struct mtd_info *mtd = &nand_info[0];
	int yaffsVersion = 2;
	int nBlocks;

	yaffs_Device *flashDev = calloc(1, sizeof(yaffs_Device));
	yaffsfs_config[0].dev = flashDev;

	/* store the mtd device for later use */
	flashDev->genericDevice = mtd;

	// Stuff to configure YAFFS
	// Stuff to initialise anything special (eg lock semaphore).
	yaffsfs_LocalInitialisation();

	// Set up devices

	/* XXX U-BOOT XXX */
	#if 0
	// /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;
	#endif

	// /flash
	flashDev->nReservedBlocks = 5;
	// flashDev->nShortOpCaches = (options.no_cache) ? 0 : 10;
	flashDev->nShortOpCaches = 10; // Use caches
	flashDev->useNANDECC = 0; // do not use YAFFS's ECC

	if (yaffsVersion == 2)
	{
	flashDev->writeChunkWithTagsToNAND = nandmtd2_WriteChunkWithTagsToNAND;
	flashDev->readChunkWithTagsFromNAND = nandmtd2_ReadChunkWithTagsFromNAND;
	flashDev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad;
	flashDev->queryNANDBlock = nandmtd2_QueryNANDBlock;
	flashDev->spareBuffer = YMALLOC(mtd->oobsize);
	flashDev->isYaffs2 = 1;
	#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
	flashDev->nDataBytesPerChunk = mtd->writesize;
	flashDev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
	#else
	flashDev->nDataBytesPerChunk = mtd->oobblock;
	flashDev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
	#endif
	nBlocks = mtd->size / mtd->erasesize;

	flashDev->nCheckpointReservedBlocks = 10;
	flashDev->startBlock = 0;
	flashDev->endBlock = nBlocks - 1;
	}
	else
	{
	flashDev->writeChunkToNAND = nandmtd_WriteChunkToNAND;
	flashDev->readChunkFromNAND = nandmtd_ReadChunkFromNAND;
	flashDev->isYaffs2 = 0;
	nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
	flashDev->startBlock = 320;
	flashDev->endBlock = nBlocks - 1;
	flashDev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
	flashDev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
	}

	/* ... and common functions */
	flashDev->eraseBlockInNAND = nandmtd_EraseBlockInNAND;
	flashDev->initialiseNAND = nandmtd_InitialiseNAND;

	yaffs_initialise(yaffsfs_config);

	return 0;
	}


	void make_a_file(char *yaffsName,char bval,int sizeOfFile)
	{
	int outh;
	int i;
	unsigned char buffer[100];

	outh = yaffs_open(yaffsName, O_CREAT \| O_RDWR \| O_TRUNC, S_IREAD \| S_IWRITE);
	if (outh < 0)
	{
	printf("Error opening file: %d\n", outh);
	return;
	}

	memset(buffer,bval,100);

	do{
	i = sizeOfFile;
	if(i > 100) i = 100;
	sizeOfFile -= i;

	yaffs_write(outh,buffer,i);

	} while (sizeOfFile > 0);


	yaffs_close(outh);
	}

	void read_a_file(char *fn)
	{
	int h;
	int i = 0;
	unsigned char b;

	h = yaffs_open(fn, O_RDWR,0);
	if(h<0)
	{
	printf("File not found\n");
	return;
	}

	while(yaffs_read(h,&b,1)> 0)
	{
	printf("%02x ",b);
	i++;
	if(i > 32)
	{
	printf("\n");
	i = 0;;
	}
	}
	printf("\n");
	yaffs_close(h);
	}

	void cmd_yaffs_mount(char *mp)
	{
	yaffs_StartUp();
	int retval = yaffs_mount(mp);
	if( retval != -1)
	isMounted = 1;
	else
	printf("Error mounting %s, return value: %d\n", mp, yaffsfs_GetError());
	}

	static void checkMount(void)
	{
	if( !isMounted )
	{
	cmd_yaffs_mount(MOUNT_POINT);
	}
	}

	void cmd_yaffs_umount(char *mp)
	{
	checkMount();
	if( yaffs_unmount(mp) == -1)
	printf("Error umounting %s, return value: %d\n", mp, yaffsfs_GetError());
	}

	void cmd_yaffs_write_file(char *yaffsName,char bval,int sizeOfFile)
	{
	checkMount();
	make_a_file(yaffsName,bval,sizeOfFile);
	}


	void cmd_yaffs_read_file(char *fn)
	{
	checkMount();
	read_a_file(fn);
	}


	void cmd_yaffs_mread_file(char fn, char addr)
	{
	int h;
	struct yaffs_stat s;

	checkMount();

	yaffs_stat(fn,&s);

	printf ("Copy %s to 0x%p... ", fn, addr);
	h = yaffs_open(fn, O_RDWR,0);
	if(h<0)
	{
	printf("File not found\n");
	return;
	}

	yaffs_read(h,addr,(int)s.st_size);
	printf("\t[DONE]\n");

	yaffs_close(h);
	}


	void cmd_yaffs_mwrite_file(char fn, char addr, int size)
	{
	int outh;

	checkMount();
	outh = yaffs_open(fn, O_CREAT \| O_RDWR \| O_TRUNC, S_IREAD \| S_IWRITE);
	if (outh < 0)
	{
	printf("Error opening file: %d\n", outh);
	}

	yaffs_write(outh,addr,size);

	yaffs_close(outh);
	}


	void cmd_yaffs_ls(const char *mountpt, int longlist)
	{
	int i;
	yaffs_DIR *d;
	yaffs_dirent *de;
	struct yaffs_stat stat;
	char tempstr[255];

	checkMount();
	d = yaffs_opendir(mountpt);

	if(!d)
	{
	printf("opendir failed\n");
	}
	else
	{
	for(i = 0; (de = yaffs_readdir(d)) != NULL; i++)
	{
	if (longlist)
	{
	sprintf(tempstr, "%s/%s", mountpt, de->d_name);
	yaffs_stat(tempstr, &stat);
	printf("%-25s\t%7ld\n",de->d_name, stat.st_size);
	}
	else
	{
	printf("%s\n",de->d_name);
	}
	}
	}
	}


	void cmd_yaffs_mkdir(const char *dir)
	{
	checkMount();

	int retval = yaffs_mkdir(dir, 0);

	if ( retval < 0)
	printf("yaffs_mkdir returning error: %d\n", retval);
	}

	void cmd_yaffs_rmdir(const char *dir)
	{
	checkMount();

	int retval = yaffs_rmdir(dir);

	if ( retval < 0)
	printf("yaffs_rmdir returning error: %d\n", retval);
	}

	void cmd_yaffs_rm(const char *path)
	{
	checkMount();

	int retval = yaffs_unlink(path);

	if ( retval < 0)
	printf("yaffs_unlink returning error: %d\n", retval);
	}

	void cmd_yaffs_mv(const char oldPath, const char newPath)
	{
	checkMount();

	int retval = yaffs_rename(newPath, oldPath);

	if ( retval < 0)
	printf("yaffs_unlink returning error: %d\n", retval);
	}