Am Samstag, den 07.05.2011, 13:01 -0400 schrieb Kevin O'Connor: > On Wed, May 04, 2011 at 10:16:17AM +0200, Sven Schnelle wrote: > > >>> Will do. But right now i have the problem that the Keyboard isn't > > >>> working on cold boot - seabios is probably started so early that some > > >>> hardware parts are not finished with reset or similar things. > [...] > > I've just modified seabios to resend commands when 0xfe is received as a > > quick hack. It makes my keyboard working again. I'm not sure if SeabIOS > > should handle 0xfe as RESEND or not - have not monitored much Keyboards, > > and don't know wether this has any side effects. > > Some ps2 ports send NAK (0xfe) when there is no keyboard plugged in. > The detection for NAK was added so that it doesn't take a full second > to recognize that no keyboard is present. The patch you sent would > loop infinitely in this situation. > > It's possible to have ps2_send_byte() attempt a resend on each NAK and > use the timer to detect when to stop. However, that will re-introduce > the problem of having to wait a second when there is no keyboard > present. > > Do you know how long it takes for your keyboard to become responsive? > (You can pass "-n" to tools/readserial.py to have it report wall times > instead of adjusted times.) > > Have you considerd using a USB keyboard? :-)
I do not know how to interpret your »:-)«, but to clarify Sven is using coreboot on his laptop so the non-working keyboard is the build in keyboard. > BTW, if you want to improve boot time, setting > CONFIG_THREAD_OPTIONROMS should help. Thanks, Paul
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