freebsd-skq/sys/dev/atkbdc
Maxim Sobolev 6621aa5cc7 Use the same method for detecting actual presence of AT-style keyboard
controller as we use in boot blocks (querying status register until
bit 1 goes off). If that doesn't happed during reasonable period assume
that the hardware doesn't have AT-style keyboard controller. This makes
FreeBSD working almost OOB on MacBook Pro (still there are issues with
putting second CPU core on-line, but since installation CD comes with
UP kernel with this change one should be able to install FreeBSD without
playing tricks with hints). Other legacy-free hardware (e.g. IBM NetVista
S40) should benefit from this as well, but since I don't have any I can't
verify.

It should make no difference on the ordinary i386 hardware (since in
that case that hardware already would be having an issues with A20
routines in boot blocks). I don't know much about AT-style keyboard
controller on other platforms (and don't have dedicated access to one),
therefore, the code is restricted to i386 for now. I suspect that amd64
may need this as well, but I would rather leave this decision to someone
who knows better about the platform(s) in question.

I have tested this change on as many "ordinary i386 boxes" as I can get
my hands on, and it doesn't create any false negatives on hardware with
AT-style keyboard present.

MFC after:	1 month
2006-04-26 06:05:16 +00:00
..
atkbd_atkbdc.c - Hook up the new locations of the atkbdc(4), atkbd(4) and psm(4) source 2005-06-10 20:56:38 +00:00
atkbd.c Use the same method for detecting actual presence of AT-style keyboard 2006-04-26 06:05:16 +00:00
atkbdc_ebus.c - Hook up the new locations of the atkbdc(4), atkbd(4) and psm(4) source 2005-06-10 20:56:38 +00:00
atkbdc_isa.c Use the same method for detecting actual presence of AT-style keyboard 2006-04-26 06:05:16 +00:00
atkbdc_subr.c - Hook up the new locations of the atkbdc(4), atkbd(4) and psm(4) source 2005-06-10 20:56:38 +00:00
atkbdc_subr.h - Hook up the new locations of the atkbdc(4), atkbd(4) and psm(4) source 2005-06-10 20:56:38 +00:00
atkbdc.c Use the same method for detecting actual presence of AT-style keyboard 2006-04-26 06:05:16 +00:00
atkbdcreg.h - Hook up the new locations of the atkbdc(4), atkbd(4) and psm(4) source 2005-06-10 20:56:38 +00:00
atkbdreg.h - Hook up the new locations of the atkbdc(4), atkbd(4) and psm(4) source 2005-06-10 20:56:38 +00:00
psm.c Add ALPS glide point ID and some compatibility IDs. 2006-03-15 07:04:33 +00:00
psm.h - Hook up the new locations of the atkbdc(4), atkbd(4) and psm(4) source 2005-06-10 20:56:38 +00:00