init.c

norflash的文件系统。 用于中低端手机开发的参考

/*****************************************************************************
 
  FILE NAME: init.c

  DESCRIPTION:

    FSM initialization module.

 Copyright (c) 2002, VIA Technologies, Inc.
*****************************************************************************/


#include "fsmdefs.h"
#include "FsmFs.h"
#include "fsmapi.h"
#include "fsmflash.h"
#include "ostype.h"
#include "fsmdev.h"

#define DFS1_VOLUME_NAME		"vt"
#define DFS1_SECTOR_SIZE		128


extern uint32		FsmVfsStartup(void);
extern uint32		FsmVfsExit(void);

extern uint32		FsmDfsStartup(void);
extern uint32		FsmDfsExit(void);
extern uint32		FsmDataItemInit(FsmDevObjHdrT * DevObjP);
extern uint32		FsmDataItemExit(void);


extern FsmFsDrvT		FsmDfsDrv;

extern volatile uint8	FsmStarting;


#if (OS_TYPE == OS_WINDOWS)

extern FsmFlashDevT		TestDev;

#else

extern FsmFlashDevT		FlashDev;

/*added device here to support more volumes. */

#endif

uint32 CreateFlashDevObjs()
{
	HMSEM		hMtxSem;
	FsmFlashDevT *	FlashDevP;

#if (OS_TYPE == OS_WINDOWS)
	FlashDevP = &TestDev;
#else
	FlashDevP = &FlashDev;
#endif

	hMtxSem = FsmCreateMtxSem(1);

	if(hMtxSem == NULL)
	{
		return ERR_SYSTEM;
	}

	FlashDevP->DevWriteLock = hMtxSem;

	hMtxSem = FsmCreateMtxSem(1);

	if(hMtxSem == NULL)
	{
		hMtxSem = FlashDevP->DevWriteLock;
		FsmDeleteMtxSem(hMtxSem);

		return ERR_SYSTEM;
	}

	FlashDevP->DevEraseLock = hMtxSem;

	return ERR_NONE;
}

uint32 DestroyFlashDevObjs()
{
	FsmFlashDevT *	FlashDevP;

#if (OS_TYPE == OS_WINDOWS)
	FlashDevP = &TestDev;
#else
	FlashDevP = &FlashDev;
#endif

	FsmDeleteMtxSem(FlashDevP->DevWriteLock);

	FsmDeleteMtxSem(FlashDevP->DevEraseLock);

	return ERR_NONE;
}

uint32 FsmSystemInit(void * start, uint32 size)
{
	FsmFlashDevT *	FlashDevP;

#if (OS_TYPE == OS_WINDOWS)
	FlashDevP = &TestDev;
#else
	FlashDevP = &FlashDev;
#endif

	FsmStarting = TRUE;

	FsmMemorySet(start, 0, size);

	if(FsmMemInit(start, size) != ERR_NONE)
	{
		goto Fsm_sys_init_eixt;
		/* return ERR_SYSTEM; */
	}

	/*
	 * The startup function of file system 
	 * can be called in FsmInit function of 
	 * that file system, if it is the case, 
	 * we needn't to call this function here.
	 */
	if(FsmDfsStartup() != ERR_NONE)
	{
		FsmMemExit();

		goto Fsm_sys_init_eixt;
		/* return ERR_SYSTEM; */
	}

	if(FsmVfsStartup() != ERR_NONE)
	{
		FsmDfsExit();
		FsmMemExit();

		goto Fsm_sys_init_eixt;
		/* return ERR_SYSTEM; */
	}

	if(CreateFlashDevObjs() != ERR_NONE)
	{
		MonPrintf("\nCreateFlashDevObjs() failure!");

		FsmVfsExit();
		FsmDfsExit();
		FsmMemExit();

		goto Fsm_sys_init_eixt;
		/* return ERR_SYSTEM; */
	}

	if(FsmMount(&FsmDfsDrv, &(FlashDevP->DevObjHdr), DFS1_VOLUME_NAME, DFS1_SECTOR_SIZE) != 0)
	{
		MonPrintf("\nFailed on calling FsmMount()");

		DestroyFlashDevObjs();

		FsmVfsExit();
		FsmDfsExit();
		FsmMemExit();

		goto Fsm_sys_init_eixt;
		/* return ERR_SYSTEM; */
	}

	/*
	 * More devices can be mounted here to support multiple volumes.
	 */

	/* Data item manager initialize */
	if(FsmDataItemInit(&(FlashDevP->DevObjHdr)) != ERR_NONE)
	{
		FsmUnMount(DFS1_VOLUME_NAME);

		DestroyFlashDevObjs();

		FsmVfsExit();
		FsmDfsExit();
		FsmMemExit();

		goto Fsm_sys_init_eixt;
		/* return ERR_SYSTEM; */
	}

	FsmStarting = FALSE;

	return ERR_NONE;

Fsm_sys_init_eixt:

	FsmStarting = FALSE;

	return ERR_SYSTEM;
}

uint32 FsmSystemExit()
{
	FsmDataItemExit();

	FsmUnMount(DFS1_VOLUME_NAME);

	DestroyFlashDevObjs();

	FsmVfsExit();
	FsmDfsExit();
	FsmMemExit();

	return ERR_NONE;
}


/*****************************************************************************
* $Log: init.c $
* Revision 1.4  2004/03/18 09:17:49  zgy
* change volume name.
* Revision 1.3  2004/03/17 12:58:22  zgy
* Revision 1.13  2004/03/16 15:57:48  jjs
* Revision 1.12  2004/03/11 15:05:04  jjs
* Revision 1.11  2003/11/05 10:51:44  zgy
* Revision 1.10  2003/10/26 11:10:41  jjs
* Revision 1.9  2003/10/21 16:28:05  wsm
* Revision 1.8  2003/10/21 11:51:12  jjs
* Added support for Nucleus OS.
* Revision 1.7  2003/10/16 11:36:50  jjs
* Revision 1.6  2003/10/08 18:15:59  jjs
* Revision 1.5  2003/10/08 12:44:54  jjs
* Revision 1.4  2003/09/16 11:30:55  wsm
* Revision 1.3  2003/09/14 16:56:46  jjs
* Revision 1.2  2003/09/12 18:06:27  jjs
* Revision 1.1  2003/09/09 15:07:53  jjs
* Initial revision
*****************************************************************************/