> Author: royger
> Date: Mon Jun 25 09:39:16 2018
> New Revision: 335629
> URL: https://svnweb.freebsd.org/changeset/base/335629
>
> Log:
> vt: add option to ignore NO_VGA flag in ACPI
>
> To workaround buggy firmware that sets this flag when there's actually
> a VGA present.
>
> Reported and tested by: Yasuhiro KIMURA <y...@utahime.org>
> Sponsored by: Citrix Systems R&D
> Reviewed by: kib
> Differential revision: https://reviews.freebsd.org/D16003
It is generally best to avoid double negatives,
couldnt this of been better named?
hw.vga.acp_force_vga
>
> Modified:
> head/share/man/man4/vt.4
> head/sys/dev/vt/hw/vga/vt_vga.c
>
> Modified: head/share/man/man4/vt.4
> ==============================================================================
> --- head/share/man/man4/vt.4 Mon Jun 25 09:19:50 2018 (r335628)
> +++ head/share/man/man4/vt.4 Mon Jun 25 09:39:16 2018 (r335629)
> @@ -44,6 +44,7 @@
> In
> .Xr loader.conf 5 :
> .Cd hw.vga.textmode=1
> +.Cd hw.vga.acpi_ignore_no_vga=1
> .Cd kern.vty=vt
> .Cd kern.vt.color.<colornum>.rgb="<colorspec>"
> .Cd kern.vt.fb.default_mode="<X>x<Y>"
> @@ -196,6 +197,10 @@ prompt or in
> Set to 1 to use virtual terminals in text mode instead of graphics mode.
> Features that require graphics mode, like loadable fonts, will be
> disabled.
> +.It Va hw.vga.acpi_ignore_no_vga
> +Set to 1 to force the usage of the VGA driver regardless of whether
> +ACPI IAPC_BOOT_ARCH signals no VGA support.
> +Can be used to workaround firmware bugs in the ACPI tables.
> .It Va kern.vty
> Set this value to
> .Ql vt
>
> Modified: head/sys/dev/vt/hw/vga/vt_vga.c
> ==============================================================================
> --- head/sys/dev/vt/hw/vga/vt_vga.c Mon Jun 25 09:19:50 2018
> (r335628)
> +++ head/sys/dev/vt/hw/vga/vt_vga.c Mon Jun 25 09:39:16 2018
> (r335629)
> @@ -1217,6 +1217,12 @@ vga_acpi_disabled(void)
> ACPI_TABLE_FADT *fadt;
> vm_paddr_t physaddr;
> uint16_t flags;
> + int ignore;
> +
> + TUNABLE_INT_FETCH("hw.vga.acpi_ignore_no_vga", &ignore);
> +
> + if (ignore)
> + return (false);
>
> physaddr = acpi_find_table(ACPI_SIG_FADT);
> if (physaddr == 0)
>
>
--
Rod Grimes rgri...@freebsd.org
_______________________________________________
svn-src-head@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
