diff options
Diffstat (limited to 'jedec.h')
| -rw-r--r-- | jedec.h | 58 |
1 files changed, 5 insertions, 53 deletions
@@ -1,8 +1,12 @@ #ifndef __JEDEC_H__ #define __JEDEC_H__ 1 + +extern void toggle_ready_jedec(volatile uint8_t *dst); +extern void data_polling_jedec(volatile uint8_t *dst, uint8_t data); +extern void unprotect_jedec(volatile uint8_t *bios); +extern void protect_jedec(volatile uint8_t *bios); int write_byte_program_jedec(volatile uint8_t *bios, uint8_t *src, volatile uint8_t *dst); - extern int probe_jedec(struct flashchip *flash); extern int erase_chip_jedec(struct flashchip *flash); extern int write_jedec(struct flashchip *flash, uint8_t *buf); @@ -11,56 +15,4 @@ extern int erase_block_jedec(volatile uint8_t *bios, unsigned int page); extern int write_sector_jedec(volatile uint8_t *bios, uint8_t *src, volatile uint8_t *dst, unsigned int page_size); -extern __inline__ void toggle_ready_jedec(volatile uint8_t *dst) -{ - unsigned int i = 0; - uint8_t tmp1, tmp2; - - tmp1 = *dst & 0x40; - - while (i++ < 0xFFFFFFF) { - tmp2 = *dst & 0x40; - if (tmp1 == tmp2) { - break; - } - tmp1 = tmp2; - } -} - -extern __inline__ void data_polling_jedec(volatile uint8_t *dst, uint8_t data) -{ - unsigned int i = 0; - uint8_t tmp; - - data &= 0x80; - - while (i++ < 0xFFFFFFF) { - tmp = *dst & 0x80; - if (tmp == data) { - break; - } - } -} - -extern __inline__ void unprotect_jedec(volatile uint8_t *bios) -{ - *(volatile uint8_t *)(bios + 0x5555) = 0xAA; - *(volatile uint8_t *)(bios + 0x2AAA) = 0x55; - *(volatile uint8_t *)(bios + 0x5555) = 0x80; - *(volatile uint8_t *)(bios + 0x5555) = 0xAA; - *(volatile uint8_t *)(bios + 0x2AAA) = 0x55; - *(volatile uint8_t *)(bios + 0x5555) = 0x20; - - usleep(200); -} - -extern __inline__ void protect_jedec(volatile uint8_t *bios) -{ - *(volatile uint8_t *)(bios + 0x5555) = 0xAA; - *(volatile uint8_t *)(bios + 0x2AAA) = 0x55; - *(volatile uint8_t *)(bios + 0x5555) = 0xA0; - - usleep(200); -} - #endif /* !__JEDEC_H__ */ |
