#ifndef __M29F400BT_H__ #define __M29F400BT_H__ 1 #include <stdio.h> extern int probe_m29f400bt(struct flashchip *flash); extern int erase_m29f400bt(struct flashchip *flash); extern int block_erase_m29f400bt(volatile char *bios, volatile char *dst); extern int write_m29f400bt(struct flashchip *flash, unsigned char *buf); extern int write_linuxbios_m29f400bt(struct flashchip *flash, unsigned char *buf); extern __inline__ void toggle_ready_m29f400bt(volatile char *dst) { unsigned int i = 0; char tmp1, tmp2; tmp1 = *dst & 0x40; while (i++ < 0xFFFFFF) { tmp2 = *dst & 0x40; if (tmp1 == tmp2) { break; } tmp1 = tmp2; } } extern __inline__ void data_polling_m29f400bt(volatile char *dst, unsigned char data) { unsigned int i = 0; char tmp; data &= 0x80; while (i++ < 0xFFFFFF) { tmp = *dst & 0x80; if (tmp == data) { break; } } } extern __inline__ void protect_m29f400bt(volatile char *bios) { *(volatile char *) (bios + 0xAAA) = 0xAA; *(volatile char *) (bios + 0x555) = 0x55; *(volatile char *) (bios + 0xAAA) = 0xA0; usleep(200); } extern __inline__ void write_page_m29f400bt(volatile char *bios, char *src, volatile char *dst, int page_size) { int i; for (i = 0; i < page_size; i++) { *(volatile char *) (bios + 0xAAA) = 0xAA; *(volatile char *) (bios + 0x555) = 0x55; *(volatile char *) (bios + 0xAAA) = 0xA0; /* transfer data from source to destination */ *dst = *src; //*(volatile char *) (bios) = 0xF0; //usleep(5); toggle_ready_m29f400bt(dst); printf ("Value in the flash at address %p = %#x, want %#x\n", (char *) (dst - bios), *dst, *src); dst++; src++; } } #endif /* !__M29F400BT_H__ */