flash.h

基于ARM应用的源码

#ifndef FLASH_CONTROL_MODULE
#define FLASH_CONTROL_MODULE

#include "../S3C44B0X/44B.h"

/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////

#define FLASH_LOCK_SUPPORTED	0
#define FLASH_TIMEOUT			1000000
#define FLASHFUNCSIZE			320

#define FLASH_BANK0_BASE_ADDR	0x000000         

#define	datasize				0x400       

#define WIDTH	2
#define	ftype		    	volatile unsigned short

#define Write_aa_to_5555()  (*(ftype *)(FLASH_BANK0_BASE_ADDR+(0x5555<<1)) = 0xaaaa)
#define Write_55_to_2aaa()  (*(ftype *)(FLASH_BANK0_BASE_ADDR+(0x2aaa<<1)) = 0x5555)
#define Write_80_to_5555()  (*(ftype *)(FLASH_BANK0_BASE_ADDR+(0x5555<<1)) = 0x8080)
#define Write_a0_to_5555()  (*(ftype *)(FLASH_BANK0_BASE_ADDR+(0x5555<<1)) = 0xa0a0)
#define Write_f0_to_5555()  (*(ftype *)(FLASH_BANK0_BASE_ADDR+(0x5555<<1)) = 0xf0f0)
#define Write_90_to_5555()  (*(ftype *)(FLASH_BANK0_BASE_ADDR+(0x5555<<1)) = 0x9090)
#define Write_20_to_5555()  (*(ftype *)(FLASH_BANK0_BASE_ADDR+(0x5555<<1)) = 0x2020)

#define Write_30_to_(add)   (*(ftype *)add = 0x3030)
#define Read_0000()	    	(*(ftype *)(FLASH_BANK0_BASE_ADDR+(0x0000<<1)))
#define Read_0001()	    	(*(ftype *)(FLASH_BANK0_BASE_ADDR+(0x0001<<1)))
#define Read_5555()	    	(*(ftype *)(FLASH_BANK0_BASE_ADDR+(0x5555<<1)))
#define Is_ff(add)	    	(*(ftype *)add == 0xffff)
#define Is_not_ff(add)	    (*(ftype *)add != 0xffff)
#define D5_Timeout(add)	    ((*(ftype *)add & 0x1010) == 0x1010)
#define D3_Timeout(add)	    ((*(ftype *)add & 0x0404) == 0x0404)

#define Fwrite(to,frm)      (*(ftype *)to = *(ftype *)frm)
#define Is_Equal(p1,p2)     (*(ftype *)p1 == *(ftype *)p2)
#define Is_Not_Equal(p1,p2) (*(ftype *)p1 != *(ftype *)p2)

/* Device ID used for ram that is "pretending" to be a flash bank. */
#define FLASHRAM	0x9999

typedef struct	tagFlashDesc
{
	unsigned long	id;				// 厂商及设备 ID
	char		*desc;				// 设备描述字符串
}
FlashDesc;

typedef struct	tagSectorInfo
{
	long	size;					// 扇区大小
	int		snum;					// 扇区数 (amongst possibly several devices) */
	int		protected;				// 窗口保护状态
	BYTE	*begin;					// 扇区基地址
	BYTE	*end;					// 扇区结束地址
}
SectorInfo;

typedef struct	flashinfo 
{
	unsigned long	id;				// 厂商及设备ID
	BYTE		*base;					// 设备基地址
	BYTE		*end;					// 设备终止地址
	int			sectorcnt;				// 扇区数
	int			width;					// 单位宽度：1=8位,2=16位,4=32位
    SectorInfo *sectors;
}
FlashInfo;

//	Flash 相关信息定义
#define FLASH_TOTAL_SIZE		4 * 1024 * 1024		// Flash 总容量大小(字节)
#define FLASH_PAGE_SIZE			64 * 1024			// Flash 页面大小(字节)
#define FLASH_PAGE_NUM			63					// Flash 块数量

// 取Flash块的起始地址
#define	GetFlashPageAddress(n)		((n)*FLASH_PAGE_SIZE)

// 用于判定数据操作成功或失败的宏(仅在文件系统内部使用)
#define		OPERATION_FAIL	0xFFFFFFFF
#define		SUCCESS(n)		((n)!=OPERATION_FAIL)
#define		FAILED(n)		((n)==OPERATION_FAIL)	

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

extern WORD	bFlashOperationEnabled;

extern int flashtype(FlashInfo *);

extern int FLASHWRITE(ftype *,ftype *,unsigned long bytecnt);
extern int ReadFlash(long dest, BYTE *buf, unsigned long bytecnt);
extern int EraseFlash(int);

#define	WriteFlash(uAddr,pBuf,uSize)	FLASHWRITE((ftype*)(uAddr), (ftype*)(pBuf), (unsigned long)(uSize))

#endif