diff options
Diffstat (limited to '82802ab.h')
| -rw-r--r-- | 82802ab.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/82802ab.h b/82802ab.h new file mode 100644 index 0000000..3649704 --- /dev/null +++ b/82802ab.h @@ -0,0 +1,44 @@ +extern int probe_82802ab (struct flashchip * flash); +extern int erase_82802ab (struct flashchip * flash); +extern int write_82802ab (struct flashchip * flash, char * buf); + +extern __inline__ void toggle_ready_82802ab (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_82802ab (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_82802ab (volatile char * bios) +{ + *(volatile char *) (bios + 0x5555) = 0xAA; + *(volatile char *) (bios + 0x2AAA) = 0x55; + *(volatile char *) (bios + 0x5555) = 0xA0; + + usleep(200); +} + |
