Date: Wed, 5 Sep 2018 20:14:41 +0200 From: Dimitry Andric <dim@FreeBSD.org> To: lev@FreeBSD.org Cc: Allan Jude <allanjude@freebsd.org>, freebsd-hackers@freebsd.org Subject: Re: Is here way to have 9600+ serial console and see boot0 message? Message-ID: <D6BAE4EA-2926-4000-93E2-DAD7689DFC9D@FreeBSD.org> In-Reply-To: <0bc33818-641c-07db-194b-66fd1eb30c55@FreeBSD.org> References: <ac3fe50c-d9a0-96ba-28f0-84ffca8e4cd3@FreeBSD.org> <14cd401a-660c-1a3a-8d80-677a42727146@freebsd.org> <0bc33818-641c-07db-194b-66fd1eb30c55@FreeBSD.org>
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--Apple-Mail=_35876750-DA3F-42B5-9942-4253D2F7BED6 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii On 5 Sep 2018, at 19:22, Lev Serebryakov <lev@FreeBSD.org> wrote: >=20 > On 05.09.2018 20:19, Allan Jude wrote: >=20 >>> I want to have my serial console 115200 (of course), *including* = BIOS >>> redirection (which goes before boot0sio). >>>=20 >>> But boot0sio supports only speeds up to 9600 (due to int 14h = limitations). >>>=20 >>> Is it possible to solve this clash somehow? >>=20 >> /boot/loader reads /boot.config where you can put -S115200 > I think, /boot/boot reads /boot.config, and it works for me. >=20 > My question is somewhat more tricky: I have 115200 BEFORE boot0sio > (from BIOS) and I have 115200 AFTER boot0sio (from /boot/boot and > /boot/loader later). And I want to see "F1 / F2" boot selection from > boot0sio. Recompile stand/i386 with BOOT_BOOT0_COMCONSOLE_SPEED=3D115200, I would normally say, but apparently stand/i386/boot0 is limited to a maximum of 9600 baud. This looks like a BIOS int 0x14 limitation. :( -Dimitry --Apple-Mail=_35876750-DA3F-42B5-9942-4253D2F7BED6 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.2 iF0EARECAB0WIQR6tGLSzjX8bUI5T82wXqMKLiCWowUCW5AdEQAKCRCwXqMKLiCW o2X6AJwJ5OqRemLagOz+8tUDEQCZRPuGyACff2Z0OHULTmXrkogfbJcEX3EdWZI= =xTgK -----END PGP SIGNATURE----- --Apple-Mail=_35876750-DA3F-42B5-9942-4253D2F7BED6--
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