flashdev.h

完整的Bell实验室的嵌入式文件系统TFS

/* flash.h:
   This header file supports the ability to use one source file to build
   flash operations for 8, 16 and 32 bit width flash banks.
*/
#include "config.h"

#define FLASH_LOCK_SUPPORTED    0
#define FLASH_TIMEOUT           100000000
#define FLASHFUNCSIZE           400

/* Manufacturer and device ids... */
#define STM_29F040      0x20e2
#define STM_M29W040B    0x20e3
#define AMD_29F040      0x01a4
#define AMD_29F010      0x0120
#define AMD_29LV040     0x014f

#if WIDTH8  /* Macros used if bank width is 8 bits */

#define WIDTH   1
#define ftype               volatile unsigned char
#define FLASHERASE          Flasherase8
#define ENDFLASHERASE       EndFlasherase8
#define FLASHWRITE          Flashwrite8
#define ENDFLASHWRITE       EndFlashwrite8
#define FLASHEWRITE         Flashewrite8
#define ENDFLASHEWRITE      EndFlashewrite8
#define FLASHTYPE           Flashtype8
#define ENDFLASHTYPE        EndFlashtype8
#define Write_aa_to_5555()  (*(ftype *)(fdev->base+(0x5555<<0)) = 0xaa)
#define Write_55_to_2aaa()  (*(ftype *)(fdev->base+(0x2aaa<<0)) = 0x55)
#define Write_80_to_5555()  (*(ftype *)(fdev->base+(0x5555<<0)) = 0x80)
#define Write_a0_to_5555()  (*(ftype *)(fdev->base+(0x5555<<0)) = 0xa0)
#define Write_f0_to_5555()  (*(ftype *)(fdev->base+(0x5555<<0)) = 0xf0)
#define Write_90_to_5555()  (*(ftype *)(fdev->base+(0x5555<<0)) = 0x90)
#define Write_30_to_(add)   (*(ftype *)add = 0x30)
#define Read_0000()         (*(ftype *)(fdev->base+(0x0000<<0)))
#define Read_0001()         (*(ftype *)(fdev->base+(0x0001<<0)))
#define Read_5555()         (*(ftype *)(fdev->base+(0x5555<<0)))
#define Is_ff(add)          (*(ftype *)add == 0xff)
#define Is_not_ff(add)      (*(ftype *)add != 0xff)
#define D5_Timeout(add)     ((*(ftype *)add & 0xdf) == 0x20)

#elif WIDTH16   /* Macros used if bank width is 16 bits */

#define WIDTH   2
#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 Write_aa_to_5555()  (*(ftype *)(fdev->base+(0x5555<<1)) = 0xaaaa)
#define Write_55_to_2aaa()  (*(ftype *)(fdev->base+(0x2aaa<<1)) = 0x5555)
#define Write_80_to_5555()  (*(ftype *)(fdev->base+(0x5555<<1)) = 0x8080)
#define Write_a0_to_5555()  (*(ftype *)(fdev->base+(0x5555<<1)) = 0xa0a0)
#define Write_f0_to_5555()  (*(ftype *)(fdev->base+(0x5555<<1)) = 0xf0f0)
#define Write_90_to_5555()  (*(ftype *)(fdev->base+(0x5555<<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 & 0xdfdf) == 0x2020)

#elif WIDTH32   /* Macros used if bank width is 32 bits */

#define WIDTH   4
#define ftype               volatile unsigned long
#define FLASHERASE          Flasherase32
#define ENDFLASHERASE       EndFlasherase32
#define FLASHWRITE          Flashwrite32
#define ENDFLASHWRITE       EndFlashwrite32
#define FLASHEWRITE         Flashewrite32
#define ENDFLASHEWRITE      EndFlashewrite32
#define FLASHTYPE           Flashtype32
#define ENDFLASHTYPE        EndFlashtype32
#define Write_aa_to_5555()  (*(ftype *)(fdev->base+(0x5555<<2)) = 0xaaaaaaaa)
#define Write_55_to_2aaa()  (*(ftype *)(fdev->base+(0x2aaa<<2)) = 0x55555555)
#define Write_80_to_5555()  (*(ftype *)(fdev->base+(0x5555<<2)) = 0x80808080)
#define Write_a0_to_5555()  (*(ftype *)(fdev->base+(0x5555<<2)) = 0xa0a0a0a0)
#define Write_f0_to_5555()  (*(ftype *)(fdev->base+(0x5555<<2)) = 0xf0f0f0f0)
#define Write_90_to_5555()  (*(ftype *)(fdev->base+(0x5555<<2)) = 0x90909090)
#define Write_30_to_(add)   (*(ftype *)add = 0x30303030)
#define Read_0000()         (*(ftype *)(fdev->base+(0x0000<<2)))
#define Read_0001()         (*(ftype *)(fdev->base+(0x0001<<2)))
#define Read_5555()         (*(ftype *)(fdev->base+(0x5555<<2)))
#define Is_ff(add)          (*(ftype *)add == 0xffffffff)
#define Is_not_ff(add)      (*(ftype *)add != 0xffffffff)
#define D5_Timeout(add)     ((*(ftype *)add & 0xdfdfdfdf) == 0x20202020)

#else
Width specification illegal or undefined.
#endif

#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)