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Support for sst firmware hub

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Corresponding to flashrom svn r25 and coreboot v2 svn r1651.
This commit is contained in:
Ronald G. Minnich
2004-09-30 16:37:01 +00:00
parent 9ffaf0b423
commit 1f4d653d8c
6 changed files with 261 additions and 2 deletions
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48
sst_fwhub.h Normal file
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#ifndef __SST_FWHUB_H__
#define __SST_FWHUB_H__ 1
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__ */