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Add preliminary (non-working) support for Sharp LHF00L04

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Corresponding to flashrom svn r44 and coreboot v2 svn r2197.
This commit is contained in:
Ronald G. Minnich
2006-03-14 19:58:14 +00:00
parent fc7fbdd3fc
commit 5eaed68734
3 changed files with 177 additions and 88 deletions
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39
sharplhf00l04.h
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@ -4,5 +4,44 @@
extern int probe_lhf00l04(struct flashchip *flash);
extern int erase_lhf00l04(struct flashchip *flash);
extern int write_lhf00l04(struct flashchip *flash, uint8_t *buf);
extern __inline__ void toggle_ready_lhf00l04(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_lhf00l04(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_lhf00l04(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 /* !__SHARPLHF00L04_H__ */