Date: Sat, 28 Jul 2018 07:37:01 +0000 (UTC) From: Eitan Adler <eadler@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r336805 - in stable/11: share/man/man4 sys/dev/vt/hw/vga Message-ID: <201807280737.w6S7b12F025452@repo.freebsd.org>
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Author: eadler Date: Sat Jul 28 07:37:01 2018 New Revision: 336805 URL: https://svnweb.freebsd.org/changeset/base/336805 Log: MFC r335629: 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. Ref D16003 PR: 229235 Modified: stable/11/share/man/man4/vt.4 stable/11/sys/dev/vt/hw/vga/vt_vga.c Directory Properties: stable/11/ (props changed) Modified: stable/11/share/man/man4/vt.4 ============================================================================== --- stable/11/share/man/man4/vt.4 Sat Jul 28 06:46:10 2018 (r336804) +++ stable/11/share/man/man4/vt.4 Sat Jul 28 07:37:01 2018 (r336805) @@ -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: stable/11/sys/dev/vt/hw/vga/vt_vga.c ============================================================================== --- stable/11/sys/dev/vt/hw/vga/vt_vga.c Sat Jul 28 06:46:10 2018 (r336804) +++ stable/11/sys/dev/vt/hw/vga/vt_vga.c Sat Jul 28 07:37:01 2018 (r336805) @@ -1211,6 +1211,12 @@ 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)
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