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#ifndef __JEDEC_H__
#define __JEDEC_H__ 1
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;
tmp1 = *dst & 0x40;
while (i++ < 0xFFFFFF) {
tmp2 = *dst & 0x40;
if (tmp1 == tmp2) {
break;
}
tmp1 = tmp2;
}
}
extern __inline__ void data_polling_jedec(volatile char *dst, char data)
{
unsigned int i = 0;
char tmp;
data &= 0x80;
while (i++ < 0xFFFFFF) {
tmp = *dst & 0x80;
if (tmp == data) {
break;
}
}
}
extern __inline__ void unprotect_jedec(volatile char *bios)
{
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0x80;
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0x20;
usleep(200);
}
extern __inline__ void protect_jedec(volatile char *bios)
{
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0xA0;
usleep(200);
}
#endif /* !__JEDEC_H__ */
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