flash.h

完整的Bell实验室的嵌入式文件系统TFS

/* flash.h:
   Header file for use with 29F800B for 16 bit mode.
*/
/* FLASHFUNCSIZE:
    Size of the array used by the flash operations to copy functions into
    RAM space for execution out of non-flash memory.
*/
#define FLASHFUNCSIZE       320

#define FLASH_TIMEOUT       1000000

#define FLASH_PROTECT_WINDOW_CLOSED 0
#define ALL_SECTORS -1

/* Manufacturer and device ids... */
#define AMD29F800T  0x000122d6
#define AMD29F800B  0x00012258

#define WIDTH           2
#define WIDTH_IN_BYTES  2
#define WIDTH_IN_BITS   16
#define WIDTH_MASK      1
#define ftype               volatile unsigned short
#define FLASHERASE          Flasherase16
#define ENDFLASHERASE       EndFlasherase16
#define FLASHWRITE          Flashwrite16
#define ENDFLASHWRITE       EndFlashwrite16
#define FLASHEWRITE         Flashewrite16
#define ENDFLASHEWRITE      EndFlashewrite16
#define FLASHTYPE           Flashtype16
#define ENDFLASHTYPE        EndFlashtype16
#define NotAligned(ptr)     ((long)ptr & 1)
#define Write_aa_to_555()  (*(ftype *)(fdev->base+(0x555<<1)) = 0xaaaa)
#define Write_55_to_2aa()  (*(ftype *)(fdev->base+(0x2aa<<1)) = 0x5555)
#define Write_80_to_555()  (*(ftype *)(fdev->base+(0x555<<1)) = 0x8080)
#define Write_a0_to_555()  (*(ftype *)(fdev->base+(0x555<<1)) = 0xa0a0)
#define Write_f0_to_555()  (*(ftype *)(fdev->base+(0x555<<1)) = 0xf0f0)
#define Write_90_to_555()  (*(ftype *)(fdev->base+(0x555<<1)) = 0x9090)
#define Write_30_to_(add)   (*(ftype *)add = 0x3030)
#define Read_0000()         (*(ftype *)(fdev->base+(0x0000<<1)))
#define Read_0001()         (*(ftype *)(fdev->base+(0x0001<<1)))
#define Read_5555()         (*(ftype *)(fdev->base+(0x5555<<1)))
#define Is_ff(add)          (*(ftype *)add == 0xffff)
#define Is_not_ff(add)      (*(ftype *)add != 0xffff)
#define D5_Timeout(add)     ((*(ftype *)add & 0x2020) == 0x2020)

#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)

extern int FlashProtectionWindow;

struct  flashdesc {
    unsigned long   id;             /* manufacturer & device id */
    char        *desc;              /* ascii string */
};

struct  sectorinfo {
    long    size;                   /* size of sector */
    int protected;                  /* if set, sector is protected by window */
    unsigned char   *begin;         /* base address of sector */
    unsigned char   *end;           /* end address of sector */
};

struct  flashinfo {
    unsigned long   id;             /* manufacturer & device id */
    unsigned char   *base;          /* base address of device */
    int     sectorcnt;              /* number of sectors */
    int     width;                  /* 1, 2, or 4 */
    struct sectorinfo sectors[19];  /* information per sector */
};

extern struct flashinfo FlashBank[];