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author | sobomax <sobomax@FreeBSD.org> | 2006-04-11 04:39:29 +0000 |
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committer | sobomax <sobomax@FreeBSD.org> | 2006-04-11 04:39:29 +0000 |
commit | bd596bb38eb3e410833a1f56dcf3d9702c6740b7 (patch) | |
tree | cb45dc0f2fefb3bef808ba1daab14501d807674a /etc | |
parent | 560017edd75e506598787853758d2966a5336f64 (diff) | |
download | FreeBSD-src-bd596bb38eb3e410833a1f56dcf3d9702c6740b7.zip FreeBSD-src-bd596bb38eb3e410833a1f56dcf3d9702c6740b7.tar.gz |
When enabling A20 put upper limit on amount of time we wait for the keyboard
controller to get ready (65K x ISA access time, visually around 1 second).
If we have wait more than that amount it's likely that the hardware is a
legacy-free one and simply doesn't have keyboard controller and doesn't
require enabling A20 at all.
This makes cdboot working for MacBook Pro with Boot Camp.
MFC after: 1 day
Diffstat (limited to 'etc')
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