#ifndef __JEDEC_H__ #define __JEDEC_H__ 1 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); extern int erase_sector_jedec(volatile uint8_t *bios, unsigned int page); 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__ */