xref: /linux/drivers/video/console/Kconfig (revision d642ef71) 
1# SPDX-License-Identifier: GPL-2.0-only
2#
3# Video configuration
4#
5
6menu "Console display driver support"
7
8config VGA_CONSOLE
9	bool "VGA text console" if EXPERT || !X86
10	depends on ALPHA || IA64 || X86 || \
11		(ARM && ARCH_FOOTBRIDGE) || \
12		(MIPS && (MIPS_MALTA || SIBYTE_BCM112X || SIBYTE_SB1250 || SIBYTE_BCM1x80 || SNI_RM))
13	select APERTURE_HELPERS if (DRM || FB || VFIO_PCI_CORE)
14	default y
15	help
16	  Saying Y here will allow you to use Linux in text mode through a
17	  display that complies with the generic VGA standard. Virtually
18	  everyone wants that.
19
20	  The program SVGATextMode can be used to utilize SVGA video cards to
21	  their full potential in text mode. Download it from
22	  <ftp://ibiblio.org/pub/Linux/utils/console/>.
23
24	  Say Y.
25
26config MDA_CONSOLE
27	depends on !M68K && !PARISC && ISA
28	tristate "MDA text console (dual-headed)"
29	help
30	  Say Y here if you have an old MDA or monochrome Hercules graphics
31	  adapter in your system acting as a second head ( = video card). You
32	  will then be able to use two monitors with your Linux system. Do not
33	  say Y here if your MDA card is the primary card in your system; the
34	  normal VGA driver will handle it.
35
36	  To compile this driver as a module, choose M here: the
37	  module will be called mdacon.
38
39	  If unsure, say N.
40
41config SGI_NEWPORT_CONSOLE
42	tristate "SGI Newport Console support"
43	depends on SGI_IP22 && HAS_IOMEM
44	select FONT_SUPPORT
45	help
46	  Say Y here if you want the console on the Newport aka XL graphics
47	  card of your Indy.  Most people say Y here.
48
49config DUMMY_CONSOLE
50	bool
51	default y
52
53config DUMMY_CONSOLE_COLUMNS
54	int "Initial number of console screen columns"
55	depends on DUMMY_CONSOLE && !ARCH_FOOTBRIDGE
56	default 160 if PARISC
57	default 80
58	help
59	  On PA-RISC, the default value is 160, which should fit a 1280x1024
60	  monitor.
61	  Select 80 if you use a 640x480 resolution by default.
62
63config DUMMY_CONSOLE_ROWS
64	int "Initial number of console screen rows"
65	depends on DUMMY_CONSOLE && !ARCH_FOOTBRIDGE
66	default 64 if PARISC
67	default 30 if ARM
68	default 25
69	help
70	  On PA-RISC, the default value is 64, which should fit a 1280x1024
71	  monitor.
72	  Select 25 if you use a 640x480 resolution by default.
73
74config FRAMEBUFFER_CONSOLE
75	bool "Framebuffer Console support"
76	depends on FB_CORE && !UML
77	default DRM_FBDEV_EMULATION
78	select VT_HW_CONSOLE_BINDING
79	select CRC32
80	select FONT_SUPPORT
81	help
82	  Low-level framebuffer-based console driver.
83
84config FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION
85	bool "Enable legacy fbcon hardware acceleration code"
86	depends on FRAMEBUFFER_CONSOLE
87	default y if PARISC
88	default n
89	help
90	  This option enables the fbcon (framebuffer text-based) hardware
91	  acceleration for graphics drivers which were written for the fbdev
92	  graphics interface.
93
94	  On modern machines, on mainstream machines (like x86-64) or when
95	  using a modern Linux distribution those fbdev drivers usually aren't used.
96	  So enabling this option wouldn't have any effect, which is why you want
97	  to disable this option on such newer machines.
98
99	  If you compile this kernel for older machines which still require the
100	  fbdev drivers, you may want to say Y.
101
102	  If unsure, select n.
103
104config FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
105       bool "Map the console to the primary display device"
106       depends on FRAMEBUFFER_CONSOLE
107       default n
108	help
109	 If this option is selected, the framebuffer console will
110	 automatically select the primary display device (if the architecture
111	 supports this feature).  Otherwise, the framebuffer console will
112	 always select the first framebuffer driver that is loaded. The latter
113	 is the default behavior.
114
115	 You can always override the automatic selection of the primary device
116	 by using the fbcon=map: boot option.
117
118	 If unsure, select n.
119
120config FRAMEBUFFER_CONSOLE_ROTATION
121       bool "Framebuffer Console Rotation"
122       depends on FRAMEBUFFER_CONSOLE
123       help
124	 Enable display rotation for the framebuffer console.  This is done
125	 in software and may be significantly slower than a normally oriented
126	 display.  Note that the rotation is done at the console level only
127	 such that other users of the framebuffer will remain normally
128	 oriented.
129
130config FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
131	bool "Framebuffer Console Deferred Takeover"
132	depends on FB=y && FRAMEBUFFER_CONSOLE && DUMMY_CONSOLE
133	help
134	  If enabled this defers the framebuffer console taking over the
135	  console from the dummy console until the first text is displayed on
136	  the console. This is useful in combination with the "quiet" kernel
137	  commandline option to keep the framebuffer contents initially put up
138	  by the firmware in place, rather then replacing the contents with a
139	  black screen as soon as fbcon loads.
140
141config STI_CONSOLE
142	bool "STI text console"
143	depends on PARISC && HAS_IOMEM
144	select FONT_SUPPORT
145	select CRC32
146	select STI_CORE
147	default y
148	help
149	  The STI console is the builtin display/keyboard on HP-PARISC
150	  machines.  Say Y here to build support for it into your kernel.
151	  The alternative is to use your primary serial port as a console.
152
153endmenu
154
155