1# 2# Video configuration 3# 4 5menu "Console display driver support" 6 7config VGA_CONSOLE 8 bool "VGA text console" if EXPERT || !X86 9 depends on !4xx && !PPC_8xx && !SPARC && !M68K && !PARISC && !SUPERH && \ 10 (!ARM || ARCH_FOOTBRIDGE || ARCH_INTEGRATOR || ARCH_NETWINDER) && \ 11 !ARM64 && !ARC && !MICROBLAZE && !OPENRISC && !NDS32 && !S390 12 default y 13 help 14 Saying Y here will allow you to use Linux in text mode through a 15 display that complies with the generic VGA standard. Virtually 16 everyone wants that. 17 18 The program SVGATextMode can be used to utilize SVGA video cards to 19 their full potential in text mode. Download it from 20 <ftp://ibiblio.org/pub/Linux/utils/console/>. 21 22 Say Y. 23 24config VGACON_SOFT_SCROLLBACK 25 bool "Enable Scrollback Buffer in System RAM" 26 depends on VGA_CONSOLE 27 default n 28 help 29 The scrollback buffer of the standard VGA console is located in 30 the VGA RAM. The size of this RAM is fixed and is quite small. 31 If you require a larger scrollback buffer, this can be placed in 32 System RAM which is dynamically allocated during initialization. 33 Placing the scrollback buffer in System RAM will slightly slow 34 down the console. 35 36 If you want this feature, say 'Y' here and enter the amount of 37 RAM to allocate for this buffer. If unsure, say 'N'. 38 39config VGACON_SOFT_SCROLLBACK_SIZE 40 int "Scrollback Buffer Size (in KB)" 41 depends on VGACON_SOFT_SCROLLBACK 42 range 1 1024 43 default "64" 44 help 45 Enter the amount of System RAM to allocate for scrollback 46 buffers of VGA consoles. Each 64KB will give you approximately 47 16 80x25 screenfuls of scrollback buffer. 48 49config VGACON_SOFT_SCROLLBACK_PERSISTENT_ENABLE_BY_DEFAULT 50 bool "Persistent Scrollback History for each console by default" 51 depends on VGACON_SOFT_SCROLLBACK 52 default n 53 help 54 Say Y here if the scrollback history should persist by default when 55 switching between consoles. Otherwise, the scrollback history will be 56 flushed each time the console is switched. This feature can also be 57 enabled using the boot command line parameter 58 'vgacon.scrollback_persistent=1'. 59 60 This feature might break your tool of choice to flush the scrollback 61 buffer, e.g. clear(1) will work fine but Debian's clear_console(1) 62 will be broken, which might cause security issues. 63 You can use the escape sequence \e[3J instead if this feature is 64 activated. 65 66 Note that a buffer of VGACON_SOFT_SCROLLBACK_SIZE is taken for each 67 created tty device. 68 So if you use a RAM-constrained system, say N here. 69 70config MDA_CONSOLE 71 depends on !M68K && !PARISC && ISA 72 tristate "MDA text console (dual-headed)" 73 ---help--- 74 Say Y here if you have an old MDA or monochrome Hercules graphics 75 adapter in your system acting as a second head ( = video card). You 76 will then be able to use two monitors with your Linux system. Do not 77 say Y here if your MDA card is the primary card in your system; the 78 normal VGA driver will handle it. 79 80 To compile this driver as a module, choose M here: the 81 module will be called mdacon. 82 83 If unsure, say N. 84 85config SGI_NEWPORT_CONSOLE 86 tristate "SGI Newport Console support" 87 depends on SGI_IP22 && HAS_IOMEM 88 select FONT_SUPPORT 89 help 90 Say Y here if you want the console on the Newport aka XL graphics 91 card of your Indy. Most people say Y here. 92 93config DUMMY_CONSOLE 94 bool 95 depends on VGA_CONSOLE!=y || SGI_NEWPORT_CONSOLE!=y 96 default y 97 98config DUMMY_CONSOLE_COLUMNS 99 int "Initial number of console screen columns" 100 depends on DUMMY_CONSOLE && !ARM 101 default 160 if PARISC 102 default 80 103 help 104 On PA-RISC, the default value is 160, which should fit a 1280x1024 105 monitor. 106 Select 80 if you use a 640x480 resolution by default. 107 108config DUMMY_CONSOLE_ROWS 109 int "Initial number of console screen rows" 110 depends on DUMMY_CONSOLE && !ARM 111 default 64 if PARISC 112 default 25 113 help 114 On PA-RISC, the default value is 64, which should fit a 1280x1024 115 monitor. 116 Select 25 if you use a 640x480 resolution by default. 117 118config FRAMEBUFFER_CONSOLE 119 bool "Framebuffer Console support" 120 depends on FB && !UML 121 select VT_HW_CONSOLE_BINDING 122 select CRC32 123 select FONT_SUPPORT 124 help 125 Low-level framebuffer-based console driver. 126 127config FRAMEBUFFER_CONSOLE_DETECT_PRIMARY 128 bool "Map the console to the primary display device" 129 depends on FRAMEBUFFER_CONSOLE 130 default n 131 ---help--- 132 If this option is selected, the framebuffer console will 133 automatically select the primary display device (if the architecture 134 supports this feature). Otherwise, the framebuffer console will 135 always select the first framebuffer driver that is loaded. The latter 136 is the default behavior. 137 138 You can always override the automatic selection of the primary device 139 by using the fbcon=map: boot option. 140 141 If unsure, select n. 142 143config FRAMEBUFFER_CONSOLE_ROTATION 144 bool "Framebuffer Console Rotation" 145 depends on FRAMEBUFFER_CONSOLE 146 help 147 Enable display rotation for the framebuffer console. This is done 148 in software and may be significantly slower than a normally oriented 149 display. Note that the rotation is done at the console level only 150 such that other users of the framebuffer will remain normally 151 oriented. 152 153config FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER 154 bool "Framebuffer Console Deferred Takeover" 155 depends on FRAMEBUFFER_CONSOLE=y && DUMMY_CONSOLE=y 156 help 157 If enabled this defers the framebuffer console taking over the 158 console from the dummy console until the first text is displayed on 159 the console. This is useful in combination with the "quiet" kernel 160 commandline option to keep the framebuffer contents initially put up 161 by the firmware in place, rather then replacing the contents with a 162 black screen as soon as fbcon loads. 163 164config STI_CONSOLE 165 bool "STI text console" 166 depends on PARISC && HAS_IOMEM 167 select FONT_SUPPORT 168 default y 169 help 170 The STI console is the builtin display/keyboard on HP-PARISC 171 machines. Say Y here to build support for it into your kernel. 172 The alternative is to use your primary serial port as a console. 173 174endmenu 175 176