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add retry to write_byte_program_jedec(), 99% success rate

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git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1814 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Li-Ta Lo
2004-12-08 02:10:33 +00:00
parent c48822ae91
commit 19b6945a40
4 changed files with 12 additions and 74 deletions
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40
util/flash_and_burn/sst_fwhub.h
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@@ -5,44 +5,4 @@ extern int probe_sst_fwhub(struct flashchip *flash);
extern int erase_sst_fwhub(struct flashchip *flash);
extern int write_sst_fwhub(struct flashchip *flash, unsigned char *buf);
extern __inline__ void toggle_ready_sst_fwhub(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_sst_fwhub(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 protect_sst_fwhub(volatile char *bios)
{
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0xA0;
usleep(200);
}
#endif /* !__SST_FWHUB_H__ */