Date: Tue, 24 May 2016 14:46:39 -0700 From: Mark Millard <markmi@dsl-only.net> To: mmel@freebsd.org, freebsd-arm <freebsd-arm@freebsd.org> Cc: otacilio.neto@bsd.com.br, Ian Lepore <ian@FreeBSD.org> Subject: Fwd: xorg broken on Beaglebone black revision 300438 Message-ID: <7700894B-58F5-4EAE-89BC-B2CEC3AFA7EF@dsl-only.net> References: <AE62E2F1-1D9F-418F-97E8-6D7F0E6B4B87@dsl-only.net>
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I forgot to CC mmel for the below reply to: https://lists.freebsd.org/pipermail/freebsd-arm/2016-May/013910.html and https://lists.freebsd.org/pipermail/freebsd-arm/2016-May/013911.html mmel is listed for the -r295256 that I referenced. =3D=3D=3D Mark Millard markmi at dsl-only.net Begin forwarded message: > From: Mark Millard <markmi at dsl-only.net> > Subject: Re: xorg broken on Beaglebone black revision 300438 > Date: May 24, 2016 at 2:35:21 PM PDT > To: freebsd-arm <freebsd-arm at freebsd.org>, otacilio.neto at = bsd.com.br > Cc: Ian Lepore <ian at FreeBSD.org> >=20 > Quoting from Otac=C3=ADlio Tue May 24 00:06:10 UTC 2016 and its = locore-v6.S changes: >=20 >> - orr r7, #CPU_CONTROL_UNAL_ENABLE >> - orr r7, #CPU_CONTROL_AFLT_ENABLE >> + bic r7, #CPU_CONTROL_UNAL_ENABLE >> + bic r7, #CPU_CONTROL_AFLT_ENABLE >=20 > -r295256 (2016-Feb-14) changed from: >=20 > bic r7, #CPU_CONTROL_UNAL_ENABLE >=20 > to: >=20 > orr r7, #CPU_CONTROL_UNAL_ENABLE >=20 > in two places (moving it a few lines down for each example as well). = So this much of the proposed changes would be reverting the -r295256 = change. The check in comment indicates the bit is RAO/SBOP for armv7. = For armv6 the check in comment claims it controls armv5 compatible = alignment support. >=20 > But: >=20 > orr r7, #CPU_CONTROL_AFLT_ENABLE >=20 > has been in locore-v6.S since the file's first checkin. So this change = to bic here be new. >=20 > What is the FreeBSD intent for each of the two new settings for armv7? = armv6? >=20 >=20 > =3D=3D=3D > Mark Millard > markmi at dsl-only.net >=20 >=20
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