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#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 uint8_t *bios, volatile uint8_t *dst);
extern int write_m29f400bt(struct flashchip *flash, uint8_t *buf);
extern int write_linuxbios_m29f400bt(struct flashchip *flash,
uint8_t *buf);
extern __inline__ void toggle_ready_m29f400bt(volatile uint8_t *dst)
{
unsigned int i = 0;
uint8_t tmp1, tmp2;
tmp1 = *dst & 0x40;
while (i++ < 0xFFFFFF) {
tmp2 = *dst & 0x40;
if (tmp1 == tmp2) {
break;
}
tmp1 = tmp2;
}
}
extern __inline__ void data_polling_m29f400bt(volatile uint8_t *dst,
uint8_t data)
{
unsigned int i = 0;
uint8_t tmp;
data &= 0x80;
while (i++ < 0xFFFFFF) {
tmp = *dst & 0x80;
if (tmp == data) {
break;
}
}
}
extern __inline__ void protect_m29f400bt(volatile uint8_t *bios)
{
*(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
*(volatile uint8_t *) (bios + 0x555) = 0x55;
*(volatile uint8_t *) (bios + 0xAAA) = 0xA0;
usleep(200);
}
extern __inline__ void write_page_m29f400bt(volatile uint8_t *bios, uint8_t *src,
volatile uint8_t *dst,
int page_size)
{
int i;
for (i = 0; i < page_size; i++) {
*(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
*(volatile uint8_t *) (bios + 0x555) = 0x55;
*(volatile uint8_t *) (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",
(uint8_t *) (dst - bios), *dst, *src);
dst++;
src++;
}
}
#endif /* !__M29F400BT_H__ */
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