flash_types.h

flash驱动程序,Nor flash类型

/* ###########################################################################
# (c) Copyright Virata Limited 1998
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#ifndef FLASH_TYPES_H
#define FLASH_TYPES_H

/*
** FLASHFS data structures
*/
#define FLASHFS_NAME_LENGTH (28)

typedef struct
{
    U32  flash_start_offset;
    U32  spare[2];
    BITS checksum;
} FLASH_HEADER;

/* NOTE: this structure must be kept 'similar' to the ISFS_DIRENT   */
/* structure - except for the 'next' field (offset vs. ptr)         */
typedef struct
{
    U32  next;                      /*  pointer to next entry       */
    BYTE name[FLASHFS_NAME_LENGTH]; /*  filename                    */
    WORD len;                       /*  length                      */
/* Note: data[x] must be 0 for correct structure length cf: isfs.h  */  
    BITS data[0];                   /*  File contents go here       */
} FLASHFS_DIRENT;


typedef struct flashfs_root
{
    BYTE volser[8];                 /*  volser                      */
    struct {                        /*  pointer to the first file   */
        U32 fixed;
        U32 dynamic;
    } first;
    U32 limit;                      /*  offset to dynamic files (not used)  */
} FLASHFS_ROOT;


#endif