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 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) _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
