177 lines
6.3 KiB
Plaintext
177 lines
6.3 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Video configuration
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#
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menu "Console display driver support"
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config VGA_CONSOLE
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bool "VGA text console" if EXPERT || !X86
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depends on !4xx && !PPC_8xx && !SPARC && !M68K && !PARISC && !SUPERH && \
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(!ARM || ARCH_FOOTBRIDGE || ARCH_INTEGRATOR || ARCH_NETWINDER) && \
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!ARM64 && !ARC && !MICROBLAZE && !OPENRISC && !NDS32 && !S390
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default y
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help
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Saying Y here will allow you to use Linux in text mode through a
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display that complies with the generic VGA standard. Virtually
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everyone wants that.
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The program SVGATextMode can be used to utilize SVGA video cards to
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their full potential in text mode. Download it from
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<ftp://ibiblio.org/pub/Linux/utils/console/>.
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Say Y.
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config VGACON_SOFT_SCROLLBACK
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bool "Enable Scrollback Buffer in System RAM"
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depends on VGA_CONSOLE
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default n
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help
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The scrollback buffer of the standard VGA console is located in
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the VGA RAM. The size of this RAM is fixed and is quite small.
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If you require a larger scrollback buffer, this can be placed in
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System RAM which is dynamically allocated during initialization.
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Placing the scrollback buffer in System RAM will slightly slow
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down the console.
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If you want this feature, say 'Y' here and enter the amount of
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RAM to allocate for this buffer. If unsure, say 'N'.
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config VGACON_SOFT_SCROLLBACK_SIZE
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int "Scrollback Buffer Size (in KB)"
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depends on VGACON_SOFT_SCROLLBACK
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range 1 1024
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default "64"
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help
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Enter the amount of System RAM to allocate for scrollback
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buffers of VGA consoles. Each 64KB will give you approximately
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16 80x25 screenfuls of scrollback buffer.
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config VGACON_SOFT_SCROLLBACK_PERSISTENT_ENABLE_BY_DEFAULT
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bool "Persistent Scrollback History for each console by default"
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depends on VGACON_SOFT_SCROLLBACK
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default n
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help
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Say Y here if the scrollback history should persist by default when
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switching between consoles. Otherwise, the scrollback history will be
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flushed each time the console is switched. This feature can also be
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enabled using the boot command line parameter
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'vgacon.scrollback_persistent=1'.
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This feature might break your tool of choice to flush the scrollback
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buffer, e.g. clear(1) will work fine but Debian's clear_console(1)
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will be broken, which might cause security issues.
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You can use the escape sequence \e[3J instead if this feature is
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activated.
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Note that a buffer of VGACON_SOFT_SCROLLBACK_SIZE is taken for each
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created tty device.
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So if you use a RAM-constrained system, say N here.
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config MDA_CONSOLE
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depends on !M68K && !PARISC && ISA
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tristate "MDA text console (dual-headed)"
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---help---
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Say Y here if you have an old MDA or monochrome Hercules graphics
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adapter in your system acting as a second head ( = video card). You
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will then be able to use two monitors with your Linux system. Do not
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say Y here if your MDA card is the primary card in your system; the
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normal VGA driver will handle it.
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To compile this driver as a module, choose M here: the
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module will be called mdacon.
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If unsure, say N.
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config SGI_NEWPORT_CONSOLE
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tristate "SGI Newport Console support"
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depends on SGI_IP22 && HAS_IOMEM
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select FONT_SUPPORT
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help
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Say Y here if you want the console on the Newport aka XL graphics
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card of your Indy. Most people say Y here.
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config DUMMY_CONSOLE
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bool
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depends on VGA_CONSOLE!=y || SGI_NEWPORT_CONSOLE!=y
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default y
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config DUMMY_CONSOLE_COLUMNS
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int "Initial number of console screen columns"
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depends on DUMMY_CONSOLE && !ARM
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default 160 if PARISC
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default 80
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help
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On PA-RISC, the default value is 160, which should fit a 1280x1024
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monitor.
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Select 80 if you use a 640x480 resolution by default.
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config DUMMY_CONSOLE_ROWS
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int "Initial number of console screen rows"
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depends on DUMMY_CONSOLE && !ARM
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default 64 if PARISC
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default 25
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help
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On PA-RISC, the default value is 64, which should fit a 1280x1024
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monitor.
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Select 25 if you use a 640x480 resolution by default.
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config FRAMEBUFFER_CONSOLE
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bool "Framebuffer Console support"
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depends on FB && !UML
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select VT_HW_CONSOLE_BINDING
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select CRC32
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select FONT_SUPPORT
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help
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Low-level framebuffer-based console driver.
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config FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
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bool "Map the console to the primary display device"
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depends on FRAMEBUFFER_CONSOLE
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default n
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---help---
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If this option is selected, the framebuffer console will
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automatically select the primary display device (if the architecture
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supports this feature). Otherwise, the framebuffer console will
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always select the first framebuffer driver that is loaded. The latter
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is the default behavior.
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You can always override the automatic selection of the primary device
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by using the fbcon=map: boot option.
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If unsure, select n.
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config FRAMEBUFFER_CONSOLE_ROTATION
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bool "Framebuffer Console Rotation"
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depends on FRAMEBUFFER_CONSOLE
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help
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Enable display rotation for the framebuffer console. This is done
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in software and may be significantly slower than a normally oriented
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display. Note that the rotation is done at the console level only
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such that other users of the framebuffer will remain normally
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oriented.
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config FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
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bool "Framebuffer Console Deferred Takeover"
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depends on FB=y && FRAMEBUFFER_CONSOLE && DUMMY_CONSOLE
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help
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If enabled this defers the framebuffer console taking over the
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console from the dummy console until the first text is displayed on
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the console. This is useful in combination with the "quiet" kernel
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commandline option to keep the framebuffer contents initially put up
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by the firmware in place, rather then replacing the contents with a
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black screen as soon as fbcon loads.
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config STI_CONSOLE
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bool "STI text console"
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depends on PARISC && HAS_IOMEM
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select FONT_SUPPORT
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default y
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help
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The STI console is the builtin display/keyboard on HP-PARISC
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machines. Say Y here to build support for it into your kernel.
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The alternative is to use your primary serial port as a console.
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endmenu
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