diff options
| -rw-r--r-- | boot.subx | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/boot.subx b/boot.subx index c19ab02a..0b840d58 100644 --- a/boot.subx +++ b/boot.subx @@ -1047,6 +1047,7 @@ $store-sectors:store-sector: eb/jump loop/disp8 } } + (flush-ata-cache *(ebp+8)) $store-sectors:end: # . restore registers 5b/pop-to-ebx @@ -1325,6 +1326,23 @@ $wait-400ns:end: 5d/pop-to-ebp c3/return +# Flush cache isn't in ATA 3, but it shows up by the ATA 5 spec: +# http://hddguru.com/download/documentation/ATA-ATAPI-standard-5/ATA-ATAPI-5.pdf +flush-ata-cache: # disk: (addr disk) + # . prologue + 55/push-ebp + 89/<- %ebp 4/r32/esp + # + (ata-drive-select *(ebp+8) 0) + (ata-command *(ebp+8) 0xe7) # flush cache + (while-ata-busy *(ebp+8)) + (until-ata-ready-for-data *(ebp+8)) +$flush-ata-cache:end: + # . epilogue + 89/<- %esp 5/r32/ebp + 5d/pop-to-ebp + c3/return + # }}} ## Controlling a PS/2 mouse |