diff options
Diffstat (limited to 'util/flashrom/82802ab.c')
| -rw-r--r-- | util/flashrom/82802ab.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/util/flashrom/82802ab.c b/util/flashrom/82802ab.c index 53930eec65..dc6ffbe1b8 100644 --- a/util/flashrom/82802ab.c +++ b/util/flashrom/82802ab.c @@ -30,6 +30,46 @@ #include "82802ab.h" #include "debug.h" +void toggle_ready_82802ab(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; + } +} + +void data_polling_82802ab(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; + } + } +} + +void protect_82802ab(volatile uint8_t *bios) +{ + *(volatile uint8_t *)(bios + 0x5555) = 0xAA; + *(volatile uint8_t *)(bios + 0x2AAA) = 0x55; + *(volatile uint8_t *)(bios + 0x5555) = 0xA0; + + usleep(200); +} + // I need that Berkeley bit-map printer void print_82802ab_status(uint8_t status) { |