diff options
Diffstat (limited to 'jedec.h')
| -rw-r--r-- | jedec.h | 76 |
1 files changed, 19 insertions, 57 deletions
@@ -1,11 +1,16 @@ #ifndef __JEDEC_H__ #define __JEDEC_H__ 1 -extern int probe_jedec (struct flashchip * flash); -extern int erase_jedec (struct flashchip * flash); -extern int write_jedec (struct flashchip * flash, unsigned char * buf); - -extern __inline__ void toggle_ready_jedec (volatile char * dst) +extern int probe_jedec(struct flashchip *flash); +extern int erase_chip_jedec(struct flashchip *flash); +extern int write_jedec(struct flashchip *flash, unsigned char *buf); +extern int erase_sector_jedec(volatile char *bios, unsigned int page); +extern int write_sector_jedec(volatile char *bios, + unsigned char *src, + volatile unsigned char *dst, + unsigned int page_size); + +extern __inline__ void toggle_ready_jedec(volatile char *dst) { unsigned int i = 0; char tmp1, tmp2; @@ -21,7 +26,7 @@ extern __inline__ void toggle_ready_jedec (volatile char * dst) } } -extern __inline__ void data_polling_jedec (volatile char * dst, char data) +extern __inline__ void data_polling_jedec(volatile char *dst, char data) { unsigned int i = 0; char tmp; @@ -36,69 +41,26 @@ extern __inline__ void data_polling_jedec (volatile char * dst, char data) } } -extern __inline__ void protect_jedec (volatile char * bios) +extern __inline__ void unprotect_jedec(volatile char *bios) { *(volatile char *) (bios + 0x5555) = 0xAA; *(volatile char *) (bios + 0x2AAA) = 0x55; - *(volatile char *) (bios + 0x5555) = 0xA0; + *(volatile char *) (bios + 0x5555) = 0x80; + *(volatile char *) (bios + 0x5555) = 0xAA; + *(volatile char *) (bios + 0x2AAA) = 0x55; + *(volatile char *) (bios + 0x5555) = 0x20; usleep(200); } -extern int erase_sector_jedec (volatile char * bios, unsigned int page); - -extern __inline__ void write_page_jedec (volatile char * bios, char * src, volatile char * dst, - int page_size) +extern __inline__ void protect_jedec(volatile char *bios) { - int i; - *(volatile char *) (bios + 0x5555) = 0xAA; *(volatile char *) (bios + 0x2AAA) = 0x55; *(volatile char *) (bios + 0x5555) = 0xA0; - for (i = 0; i < page_size; i++) { - /* transfer data from source to destination */ - *dst++ = *src++; - } - - usleep(100); - toggle_ready_jedec(dst-1); + usleep(200); } -static __inline__ int write_sector_jedec(volatile char * bios, - unsigned char * src, - volatile unsigned char * dst, - unsigned int page_size) -{ - int i; - volatile char *Temp; - - for (i = 0; i < page_size; i++) { - if (*dst != 0xff) { - printf("FATAL: dst %p not erased (val 0x%x\n", dst, *dst); - return(-1); - } - /* transfer data from source to destination */ - if (*src == 0xFF) { - dst++, src++; - /* If the data is 0xFF, don't program it */ - continue; - } - Temp = (bios + 0x5555); - *Temp = 0xAA; - Temp = bios + 0x2AAA; - *Temp = 0x55; - Temp = bios + 0x5555; - *Temp = 0xA0; - *dst = *src; - toggle_ready_jedec(bios); - if (*dst != *src) - printf("BAD! dst 0x%lx val 0x%x src 0x%x\n", - (unsigned long)dst, *dst, *src); - dst++, src++; - } - - return(0); -} -#endif /* !__JEDEC_H__ */ +#endif /* !__JEDEC_H__ */ |