5 menu "Graphics support"
8 bool "Enable driver model support for LCD/video"
11 This enables driver model for LCD and video devices. These support
12 a bitmap display of various sizes and depths which can be drawn on
13 to display a command-line console or splash screen. Enabling this
14 option compiles in the video uclass and routes all LCD/video access
18 bool "Enable panel backlight uclass support"
22 This provides backlight uclass driver that enables basic panel
25 config VIDEO_PCI_DEFAULT_FB_SIZE
26 hex "Default framebuffer size to use if no drivers request it"
28 default 0x1000000 if X86 && PCI
29 default 0 if !(X86 && PCI)
31 Generally, video drivers request the amount of memory they need for
32 the frame buffer when they are bound, by setting the size field in
33 struct video_uc_platdata. That memory is then reserved for use after
34 relocation. But PCI drivers cannot be bound before relocation unless
35 they are mentioned in the devicetree.
37 With this value set appropriately, it is possible for PCI video
38 devices to have a framebuffer allocated by U-Boot.
40 Note: the framebuffer needs to be large enough to store all pixels at
41 maximum resolution. For example, at 1920 x 1200 with 32 bits per
42 pixel, 2560 * 1600 * 32 / 8 = 0xfa0000 bytes are needed.
45 bool "Enable copying the frame buffer to a hardware copy"
48 On some machines (e.g. x86), reading from the frame buffer is very
49 slow because it is uncached. To improve performance, this feature
50 allows the frame buffer to be kept in cached memory (allocated by
51 U-Boot) and then copied to the hardware frame-buffer as needed.
53 To use this, your video driver must set @copy_base in
54 struct video_uc_platdata.
57 bool "Generic PWM based Backlight Driver"
58 depends on BACKLIGHT && DM_PWM
61 If you have a LCD backlight adjustable by PWM, say Y to enable
63 This driver can be use with "simple-panel" and
64 it understands the standard device tree
65 (leds/backlight/pwm-backlight.txt)
68 bool "Generic GPIO based Backlight Driver"
71 If you have a LCD backlight adjustable by GPIO, say Y to enable
73 This driver can be used with "simple-panel" and
74 it understands the standard device tree
75 (leds/backlight/gpio-backlight.txt)
78 bool "Enable vidconsole commands lcdputs and setcurs"
82 Enabling this will provide 'setcurs' and 'lcdputs' commands which
83 support cursor positioning and drawing strings on video framebuffer.
86 bool "Support 8-bit-per-pixel displays"
90 Support drawing text and bitmaps onto a 8-bit-per-pixel display.
91 Enabling this will include code to support this display. Without
92 this option, such displays will not be supported and console output
96 bool "Support 16-bit-per-pixel displays"
100 Support drawing text and bitmaps onto a 16-bit-per-pixel display.
101 Enabling this will include code to support this display. Without
102 this option, such displays will not be supported and console output
106 bool "Support 32-bit-per-pixel displays"
110 Support drawing text and bitmaps onto a 32-bit-per-pixel display.
111 Enabling this will include code to support this display. Without
112 this option, such displays will not be supported and console output
116 bool "Support ANSI escape sequences in video console"
120 Enable ANSI escape sequence decoding for a more fully functional
123 config VIDEO_MIPI_DSI
124 bool "Support MIPI DSI interface"
127 Support MIPI DSI interface for driving a MIPI compatible device.
128 The MIPI Display Serial Interface (MIPI DSI) defines a high-speed
129 serial interface between a host processor and a display module.
131 config CONSOLE_NORMAL
132 bool "Support a simple text console"
134 default y if DM_VIDEO
136 Support drawing text on the frame buffer console so that it can be
137 used as a console. Rotation is not supported by this driver (see
138 CONFIG_CONSOLE_ROTATION for that). A built-in 8x16 font is used
141 config CONSOLE_ROTATION
142 bool "Support rotated displays"
145 Sometimes, for example if the display is mounted in portrait
146 mode or even if it's mounted landscape but rotated by 180degree,
147 we need to rotate our content of the display relative to the
148 framebuffer, so that user can read the messages which are
149 printed out. Enable this option to include a text driver which can
150 support this. The rotation is set by the 'rot' parameter in
151 struct video_priv: 0=unrotated, 1=90 degrees clockwise, 2=180
152 degrees, 3=270 degrees.
154 config CONSOLE_TRUETYPE
155 bool "Support a console that uses TrueType fonts"
158 TrueTrype fonts can provide outline-drawing capability rather than
159 needing to provide a bitmap for each font and size that is needed.
160 With this option you can adjust the text size and use a variety of
161 fonts. Note that this is noticeably slower than with normal console.
163 config CONSOLE_TRUETYPE_SIZE
164 int "TrueType font size"
165 depends on CONSOLE_TRUETYPE
168 This sets the font size for the console. The size is measured in
169 pixels and is the nominal height of a character. Note that fonts
170 are commonly measured in 'points', being 1/72 inch (about 3.52mm).
171 However that measurement depends on the size of your display and
172 there is no standard display density. At present there is not a
173 method to select the display's physical size, which would allow
174 U-Boot to calculate the correct font size.
176 config SYS_WHITE_ON_BLACK
177 bool "Display console as white on a black background"
178 default y if ARCH_AT91 || ARCH_EXYNOS || ARCH_ROCKCHIP || ARCH_TEGRA || X86 || ARCH_SUNXI
180 Normally the display is black on a white background, Enable this
181 option to invert this, i.e. white on a black background. This can be
182 better in low-light situations or to reduce eye strain in some
186 bool "Skip framebuffer clear"
188 If firmware (whatever loads u-boot) has already put a splash image
189 on screen, you might want to preserve it until whatever u-boot
190 loads takes over the screen. This, for example, can be used to
191 keep splash image on screen until grub graphical boot menu starts.
194 bool "Enable panel uclass support"
198 This provides panel uclass driver that enables basic panel support.
201 bool "Enable simple panel support"
205 This turns on a simple panel driver that enables a compatible
208 source "drivers/video/fonts/Kconfig"
210 config VIDCONSOLE_AS_LCD
211 bool "Use 'vidconsole' when CONFIG_VIDCONSOLE_AS_NAME string is seen in stdout"
214 This is a work-around for boards which have 'lcd' or 'vga' in their
215 stdout environment variable, but have moved to use driver model for
216 video. In this case the console will no-longer work. While it is
217 possible to update the environment, the breakage may be confusing for
218 users. This option will be removed around the end of 2020.
220 config VIDCONSOLE_AS_NAME
221 string "Use 'vidconsole' when string defined here is seen in stdout"
222 depends on VIDCONSOLE_AS_LCD
223 default "lcd" if LCD || TEGRA_COMMON
224 default "vga" if !LCD
226 This is a work-around for boards which have 'lcd' or 'vga' in their
227 stdout environment variable, but have moved to use driver model for
228 video. In this case the console will no-longer work. While it is
229 possible to update the environment, the breakage may be confusing for
230 users. This option will be removed around the end of 2020.
232 config VIDEO_COREBOOT
233 bool "Enable coreboot framebuffer driver support"
234 depends on X86 && SYS_COREBOOT
236 Turn on this option to enable a framebuffer driver when U-Boot is
237 loaded by coreboot where the graphics device is configured by
238 coreboot already. This can in principle be used with any platform
239 that coreboot supports.
242 bool "Enable EFI framebuffer driver support"
245 Turn on this option to enable a framebuffeer driver when U-Boot is
246 loaded as a payload (see README.u-boot_on_efi) by an EFI BIOS where
247 the graphics device is configured by the EFI BIOS already. This can
248 in principle be used with any platform that has an EFI BIOS.
251 bool "Enable VESA video driver support"
254 Turn on this option to enable a very simple driver which uses vesa
255 to discover the video mode and then provides a frame buffer for use
256 by U-Boot. This can in principle be used with any platform that
257 supports PCI and video cards that support VESA BIOS Extension (VBE).
259 config FRAMEBUFFER_SET_VESA_MODE
260 bool "Set framebuffer graphics resolution"
261 depends on VIDEO_VESA || VIDEO_BROADWELL_IGD
263 Set VESA/native framebuffer mode (needed for bootsplash and graphical
267 prompt "framebuffer graphics resolution"
268 default FRAMEBUFFER_VESA_MODE_118
269 depends on FRAMEBUFFER_SET_VESA_MODE
271 This option sets the resolution used for the U-Boot framebuffer (and
274 config FRAMEBUFFER_VESA_MODE_100
275 bool "640x400 256-color"
277 config FRAMEBUFFER_VESA_MODE_101
278 bool "640x480 256-color"
280 config FRAMEBUFFER_VESA_MODE_102
281 bool "800x600 16-color"
283 config FRAMEBUFFER_VESA_MODE_103
284 bool "800x600 256-color"
286 config FRAMEBUFFER_VESA_MODE_104
287 bool "1024x768 16-color"
289 config FRAMEBUFFER_VESA_MODE_105
290 bool "1024x768 256-color"
292 config FRAMEBUFFER_VESA_MODE_106
293 bool "1280x1024 16-color"
295 config FRAMEBUFFER_VESA_MODE_107
296 bool "1280x1024 256-color"
298 config FRAMEBUFFER_VESA_MODE_108
301 config FRAMEBUFFER_VESA_MODE_109
304 config FRAMEBUFFER_VESA_MODE_10A
307 config FRAMEBUFFER_VESA_MODE_10B
310 config FRAMEBUFFER_VESA_MODE_10C
313 config FRAMEBUFFER_VESA_MODE_10D
314 bool "320x200 32k-color (1:5:5:5)"
316 config FRAMEBUFFER_VESA_MODE_10E
317 bool "320x200 64k-color (5:6:5)"
319 config FRAMEBUFFER_VESA_MODE_10F
320 bool "320x200 16.8M-color (8:8:8)"
322 config FRAMEBUFFER_VESA_MODE_110
323 bool "640x480 32k-color (1:5:5:5)"
325 config FRAMEBUFFER_VESA_MODE_111
326 bool "640x480 64k-color (5:6:5)"
328 config FRAMEBUFFER_VESA_MODE_112
329 bool "640x480 16.8M-color (8:8:8)"
331 config FRAMEBUFFER_VESA_MODE_113
332 bool "800x600 32k-color (1:5:5:5)"
334 config FRAMEBUFFER_VESA_MODE_114
335 bool "800x600 64k-color (5:6:5)"
337 config FRAMEBUFFER_VESA_MODE_115
338 bool "800x600 16.8M-color (8:8:8)"
340 config FRAMEBUFFER_VESA_MODE_116
341 bool "1024x768 32k-color (1:5:5:5)"
343 config FRAMEBUFFER_VESA_MODE_117
344 bool "1024x768 64k-color (5:6:5)"
346 config FRAMEBUFFER_VESA_MODE_118
347 bool "1024x768 16.8M-color (8:8:8)"
349 config FRAMEBUFFER_VESA_MODE_119
350 bool "1280x1024 32k-color (1:5:5:5)"
352 config FRAMEBUFFER_VESA_MODE_11A
353 bool "1280x1024 64k-color (5:6:5)"
355 config FRAMEBUFFER_VESA_MODE_11B
356 bool "1280x1024 16.8M-color (8:8:8)"
358 config FRAMEBUFFER_VESA_MODE_USER
359 bool "Manually select VESA mode"
363 # Map the config names to an integer (KB).
364 config FRAMEBUFFER_VESA_MODE
365 prompt "VESA mode" if FRAMEBUFFER_VESA_MODE_USER
367 default 0x100 if FRAMEBUFFER_VESA_MODE_100
368 default 0x101 if FRAMEBUFFER_VESA_MODE_101
369 default 0x102 if FRAMEBUFFER_VESA_MODE_102
370 default 0x103 if FRAMEBUFFER_VESA_MODE_103
371 default 0x104 if FRAMEBUFFER_VESA_MODE_104
372 default 0x105 if FRAMEBUFFER_VESA_MODE_105
373 default 0x106 if FRAMEBUFFER_VESA_MODE_106
374 default 0x107 if FRAMEBUFFER_VESA_MODE_107
375 default 0x108 if FRAMEBUFFER_VESA_MODE_108
376 default 0x109 if FRAMEBUFFER_VESA_MODE_109
377 default 0x10A if FRAMEBUFFER_VESA_MODE_10A
378 default 0x10B if FRAMEBUFFER_VESA_MODE_10B
379 default 0x10C if FRAMEBUFFER_VESA_MODE_10C
380 default 0x10D if FRAMEBUFFER_VESA_MODE_10D
381 default 0x10E if FRAMEBUFFER_VESA_MODE_10E
382 default 0x10F if FRAMEBUFFER_VESA_MODE_10F
383 default 0x110 if FRAMEBUFFER_VESA_MODE_110
384 default 0x111 if FRAMEBUFFER_VESA_MODE_111
385 default 0x112 if FRAMEBUFFER_VESA_MODE_112
386 default 0x113 if FRAMEBUFFER_VESA_MODE_113
387 default 0x114 if FRAMEBUFFER_VESA_MODE_114
388 default 0x115 if FRAMEBUFFER_VESA_MODE_115
389 default 0x116 if FRAMEBUFFER_VESA_MODE_116
390 default 0x117 if FRAMEBUFFER_VESA_MODE_117
391 default 0x118 if FRAMEBUFFER_VESA_MODE_118
392 default 0x119 if FRAMEBUFFER_VESA_MODE_119
393 default 0x11A if FRAMEBUFFER_VESA_MODE_11A
394 default 0x11B if FRAMEBUFFER_VESA_MODE_11B
395 default 0x117 if FRAMEBUFFER_VESA_MODE_USER
397 config VIDEO_LCD_ANX9804
398 bool "ANX9804 bridge chip"
401 Support for the ANX9804 bridge chip, which can take pixel data coming
402 from a parallel LCD interface and translate it on the fy into a DP
403 interface for driving eDP TFT displays. It uses I2C for configuration.
405 config VIDEO_LCD_ORISETECH_OTM8009A
406 bool "OTM8009A DSI LCD panel support"
408 select VIDEO_MIPI_DSI
411 Say Y here if you want to enable support for Orise Technology
412 otm8009a 480x800 dsi 2dl panel.
414 config VIDEO_LCD_RAYDIUM_RM68200
415 bool "RM68200 DSI LCD panel support"
417 select VIDEO_MIPI_DSI
420 Say Y here if you want to enable support for Raydium RM68200
421 720x1280 DSI video mode panel.
423 config VIDEO_LCD_SSD2828
424 bool "SSD2828 bridge chip"
427 Support for the SSD2828 bridge chip, which can take pixel data coming
428 from a parallel LCD interface and translate it on the fly into MIPI DSI
429 interface for driving a MIPI compatible LCD panel. It uses SPI for
432 config VIDEO_LCD_SSD2828_TX_CLK
433 int "SSD2828 TX_CLK frequency (in MHz)"
434 depends on VIDEO_LCD_SSD2828
437 The frequency of the crystal, which is clocking SSD2828. It may be
438 anything in the 8MHz-30MHz range and the exact value should be
439 retrieved from the board schematics. Or in the case of Allwinner
440 hardware, it can be usually found as 'lcd_xtal_freq' variable in
441 FEX files. It can be also set to 0 for selecting PCLK from the
442 parallel LCD interface instead of TX_CLK as the PLL clock source.
444 config VIDEO_LCD_SSD2828_RESET
445 string "RESET pin of SSD2828"
446 depends on VIDEO_LCD_SSD2828
449 The reset pin of SSD2828 chip. This takes a string in the format
450 understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H.
452 config VIDEO_LCD_HITACHI_TX18D42VM
453 bool "Hitachi tx18d42vm LVDS LCD panel support"
457 Support for Hitachi tx18d42vm LVDS LCD panels, these panels have a
458 lcd controller which needs to be initialized over SPI, once that is
459 done they work like a regular LVDS panel.
461 config VIDEO_LCD_SPI_CS
462 string "SPI CS pin for LCD related config job"
463 depends on VIDEO_LCD_SSD2828 || VIDEO_LCD_HITACHI_TX18D42VM
466 This is one of the SPI communication pins, involved in setting up a
467 working LCD configuration. The exact role of SPI may differ for
468 different hardware setups. The option takes a string in the format
469 understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H.
471 config VIDEO_LCD_SPI_SCLK
472 string "SPI SCLK pin for LCD related config job"
473 depends on VIDEO_LCD_SSD2828 || VIDEO_LCD_HITACHI_TX18D42VM
476 This is one of the SPI communication pins, involved in setting up a
477 working LCD configuration. The exact role of SPI may differ for
478 different hardware setups. The option takes a string in the format
479 understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H.
481 config VIDEO_LCD_SPI_MOSI
482 string "SPI MOSI pin for LCD related config job"
483 depends on VIDEO_LCD_SSD2828 || VIDEO_LCD_HITACHI_TX18D42VM
486 This is one of the SPI communication pins, involved in setting up a
487 working LCD configuration. The exact role of SPI may differ for
488 different hardware setups. The option takes a string in the format
489 understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H.
491 config VIDEO_LCD_SPI_MISO
492 string "SPI MISO pin for LCD related config job (optional)"
493 depends on VIDEO_LCD_SSD2828
496 This is one of the SPI communication pins, involved in setting up a
497 working LCD configuration. The exact role of SPI may differ for
498 different hardware setups. If wired up, this pin may provide additional
499 useful functionality. Such as bi-directional communication with the
500 hardware and LCD panel id retrieval (if the panel can report it). The
501 option takes a string in the format understood by 'name_to_gpio'
502 function, e.g. PH1 for pin 1 of port H.
504 source "drivers/video/meson/Kconfig"
507 bool "Armada XP LCD controller"
510 Support for the LCD controller integrated in the Marvell
514 bool "Enable OMAP3+ DSS Support"
515 depends on ARCH_OMAP2PLUS
517 This enables the Display subsystem (DSS) on OMAP3+ boards.
520 bool "Enable EDID library"
523 This enables library for accessing EDID data from an LCD panel.
526 bool "Enable Display support"
531 This supports drivers that provide a display, such as eDP (Embedded
532 DisplayPort) and HDMI (High Definition Multimedia Interface).
533 The devices provide a simple interface to start up the display,
534 read display information and enable it.
537 bool "Enable NXP TDA19988 support"
541 This enables support for the NXP TDA19988 HDMI encoder. This encoder
542 will convert RGB data streams into HDMI-encoded signals.
545 bool "Enable ATMEL video support using HLCDC"
547 HLCDC supports video output to an attached LCD panel.
550 bool "Enable AM335x video support"
552 Supports video output to an attached LCD panel.
554 config LOGICORE_DP_TX
555 bool "Enable Logicore DP TX driver"
558 Enable the driver for the transmitter part of the Xilinx LogiCORE
559 DisplayPort, a IP core for Xilinx FPGAs that implements a DisplayPort
560 video interface as defined by VESA DisplayPort v1.2.
562 Note that this is a pure transmitter device, and has no display
563 capabilities by itself.
565 config VIDEO_BROADWELL_IGD
566 bool "Enable Intel Broadwell integrated graphics device"
569 This enables support for integrated graphics on Intel broadwell
570 devices. Initialisation is mostly performed by a VGA boot ROM, with
571 some setup handled by U-Boot itself. The graphics adaptor works as
572 a VESA device and supports LCD panels, eDP and LVDS outputs.
573 Configuration of most aspects of device operation is performed using
574 a special tool which configures the VGA ROM, but the graphics
575 resolution can be selected in U-Boot.
577 config VIDEO_IVYBRIDGE_IGD
578 bool "Enable Intel Ivybridge integration graphics support"
581 This enables support for integrated graphics on Intel ivybridge
582 devices. Initialisation is mostly performed by a VGA boot ROM, with
583 some setup handled by U-Boot itself. The graphics adaptor works as
584 a VESA device and supports LCD panels, eDP and LVDS outputs.
585 Configuration of most aspects of device operation is performed using
586 a special tool which configures the VGA ROM, but the graphics
587 resolution can be selected in U-Boot.
589 config VIDEO_FSL_DCU_FB
590 bool "Enable Freescale Display Control Unit"
591 depends on VIDEO || DM_VIDEO
593 This enables support for Freescale Display Control Unit (DCU4)
594 module found on Freescale Vybrid and QorIQ family of SoCs.
596 config VIDEO_FSL_DCU_MAX_FB_SIZE_MB
597 int "Freescale DCU framebuffer size"
598 depends on VIDEO_FSL_DCU_FB
601 Set maximum framebuffer size to be used for Freescale Display
602 Controller Unit (DCU4).
604 source "drivers/video/rockchip/Kconfig"
606 config VIDEO_ARM_MALIDP
607 bool "Enable Arm Mali Display Processor support"
608 depends on DM_VIDEO && OF_CONTROL
611 This enables support for Arm Ltd Mali Display Processors from
612 the DP500, DP550 and DP650 family.
614 config VIDEO_SANDBOX_SDL
615 bool "Enable sandbox video console using SDL"
618 When using sandbox you can enable an emulated LCD display which
619 appears as an SDL (Simple DirectMedia Layer) window. This is a
620 console device and can display stdout output. Within U-Boot is is
621 a normal bitmap display and can display images as well as text.
623 source "drivers/video/stm32/Kconfig"
626 bool "Enable LCD support on Tegra20"
627 depends on OF_CONTROL
629 Tegra20 supports video output to an attached LCD panel as well as
630 other options such as HDMI. Only the LCD is supported in U-Boot.
631 This option enables this support which can be used on devices which
632 have an LCD display connected.
634 config VIDEO_TEGRA124
635 bool "Enable video support on Tegra124"
638 Tegra124 supports many video output options including eDP and
639 HDMI. At present only eDP is supported by U-Boot. This option
640 enables this support which can be used on devices which
641 have an eDP display connected.
643 source "drivers/video/bridge/Kconfig"
645 source "drivers/video/imx/Kconfig"
648 bool "Enable video support on Nexell SoC"
649 depends on ARCH_S5P6818 || ARCH_S5P4418
651 Nexell SoC supports many video output options including eDP and
652 HDMI. This option enables this support which can be used on devices
653 which have an eDP display connected.
655 source "drivers/video/nexell/Kconfig"
658 bool "Enable legacy video support"
661 Define this for video support, without using driver model. Some
662 drivers use this because they are not yet converted to driver
663 model. Video drivers typically provide a colour text console and
667 bool "Enable colour frame buffer console"
671 Enables the colour frame buffer driver. This supports colour
672 output on a bitmap display from an in-memory frame buffer.
673 Several colour devices are supported along with various options to
674 adjust the supported features. The driver is implemented in
677 The following defines are needed (cf. smiLynxEM, i8042)
678 VIDEO_FB_LITTLE_ENDIAN graphic memory organisation
680 VIDEO_HW_RECTFILL graphic chip supports
681 rectangle fill (cf. smiLynxEM)
682 VIDEO_HW_BITBLT graphic chip supports
683 bit-blit (cf. smiLynxEM)
684 VIDEO_VISIBLE_COLS visible pixel columns (cols=pitch)
685 VIDEO_VISIBLE_ROWS visible pixel rows
686 VIDEO_PIXEL_SIZE bytes per pixel
687 VIDEO_DATA_FORMAT graphic data format
688 (0-5, cf. cfb_console.c)
689 VIDEO_FB_ADRS framebuffer address
690 VIDEO_KBD_INIT_FCT keyboard int fct (i.e. rx51_kp_init())
691 VIDEO_TSTC_FCT test char fct (i.e. rx51_kp_tstc)
692 VIDEO_GETC_FCT get char fct (i.e. rx51_kp_getc)
693 CONFIG_VIDEO_LOGO display Linux logo in upper left corner
694 CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of linux_logo.h
695 for logo. Requires CONFIG_VIDEO_LOGO
696 CONFIG_CONSOLE_EXTRA_INFO
697 additional board info beside
699 CONFIG_HIDE_LOGO_VERSION
700 do not display bootloader
703 When CONFIG_CFB_CONSOLE is defined, the video console is the
704 default console. The serial console can be forced by setting the
705 environment 'console=serial'.
707 config CFB_CONSOLE_ANSI
708 bool "Support ANSI escape sequences"
709 depends on CFB_CONSOLE
711 This allows the colour buffer frame buffer driver to support
712 a limited number of ANSI escape sequences (cursor control,
713 erase functions and limited graphics rendition control). Normal
714 output from U-Boot will pass through this filter.
716 config VGA_AS_SINGLE_DEVICE
717 bool "Set the video as an output-only device"
718 depends on CFB_CONSOLE
721 If enable the framebuffer device will be initialized as an
722 output-only device. The Keyboard driver will not be set up. This
723 may be used if you have no keyboard device, or more than one
724 (USB Keyboard, AT Keyboard).
726 config VIDEO_SW_CURSOR
727 bool "Enable a software cursor"
728 depends on CFB_CONSOLE
729 default y if CFB_CONSOLE
731 This draws a cursor after the last character. No blinking is
732 provided. This makes it possible to see the current cursor
733 position when entering text on the console. It is recommended to
736 config CONSOLE_EXTRA_INFO
737 bool "Display additional board information"
738 depends on CFB_CONSOLE
740 Display additional board information strings that normally go to
741 the serial port. When this option is enabled, a board-specific
742 function video_get_info_str() is called to get the string for
743 each line of the display. The function should return the string,
744 which can be empty if there is nothing to display for that line.
746 config CONSOLE_SCROLL_LINES
747 int "Number of lines to scroll the console by"
748 depends on CFB_CONSOLE || DM_VIDEO || LCD
751 When the console need to be scrolled, this is the number of
752 lines to scroll by. It defaults to 1. Increasing this makes the
753 console jump but can help speed up operation when scrolling
756 config SYS_CONSOLE_BG_COL
757 hex "Background colour"
758 depends on CFB_CONSOLE
761 Defines the background colour for the console. The value is from
762 0x00 to 0xff and the meaning depends on the graphics card.
763 Typically, 0x00 means black and 0xff means white. Do not set
764 the background and foreground to the same colour or you will see
767 config SYS_CONSOLE_FG_COL
768 hex "Foreground colour"
769 depends on CFB_CONSOLE
772 Defines the foreground colour for the console. The value is from
773 0x00 to 0xff and the meaning depends on the graphics card.
774 Typically, 0x00 means black and 0xff means white. Do not set
775 the background and foreground to the same colour or you will see
779 bool "Enable legacy LCD support"
781 Define this to enable LCD support (for output to LCD display).
782 You will also need to select an LCD driver using an additional
783 CONFIG option. See the README for details. Drives which have been
784 converted to driver model will instead used CONFIG_DM_VIDEO.
789 Enables the common driver code for the Designware HDMI TX
790 block found in SoCs from various vendors.
791 As this does not provide any functionality by itself (but
792 rather requires a SoC-specific glue driver to call it), it
793 can not be enabled from the configuration menu.
795 config VIDEO_DSI_HOST_SANDBOX
796 bool "Enable sandbox for dsi host"
798 select VIDEO_MIPI_DSI
800 Enable support for sandbox dsi host device used for testing
802 Display Serial Interface (DSI) defines a serial bus and
803 a communication protocol between the host and the device
806 config VIDEO_DW_MIPI_DSI
808 select VIDEO_MIPI_DSI
810 Enables the common driver code for the Synopsis Designware
811 MIPI DSI block found in SoCs from various vendors.
812 As this does not provide any functionality by itself (but
813 rather requires a SoC-specific glue driver to call it), it
814 can not be enabled from the configuration menu.
817 bool "Simple display driver for preconfigured display"
819 Enables a simple generic display driver which utilizes the
820 simple-framebuffer devicetree bindings.
822 This driver assumes that the display hardware has been initialized
823 before u-boot starts, and u-boot will simply render to the pre-
824 allocated frame buffer surface.
826 config VIDEO_DT_SIMPLEFB
827 bool "Enable SimpleFB support for passing framebuffer to OS"
829 Enables the code to pass the framebuffer to the kernel as a
830 simple framebuffer in the device tree.
831 The video output is initialized by U-Boot, and kept by the
835 bool "Enable OSD support"
839 This supports drivers that provide a OSD (on-screen display), which
840 is a (usually text-oriented) graphics buffer to show information on
844 bool "Enable sandbox OSD"
847 Enable support for sandbox OSD device used for testing purposes.
850 bool "Enable IHS video out driver"
853 Enable support for the gdsys Integrated Hardware Systems (IHS) video
854 out On-screen Display (OSD) used on gdsys FPGAs to control dynamic
855 textual overlays of the display outputs.
858 bool "Show a splash-screen image"
860 If this option is set, the environment is checked for a variable
861 "splashimage". If found, the usual display of logo, copyright and
862 system information on the LCD is suppressed and the BMP image at the
863 address specified in "splashimage" is loaded instead. The console is
864 redirected to the "nulldev", too. This allows for a "silent" boot
865 where a splash screen is loaded very quickly after power-on.
867 The splash_screen_prepare() function is a weak function defined in
868 common/splash.c. It is called as part of the splash screen display
869 sequence. It gives the board an opportunity to prepare the splash
870 image data before it is processed and sent to the frame buffer by
871 U-Boot. Define your own version to use this feature.
873 config SPLASHIMAGE_GUARD
874 bool "Support unaligned BMP images"
875 depends on SPLASH_SCREEN
877 If this option is set, then U-Boot will prevent the environment
878 variable "splashimage" from being set to a problematic address
879 (see doc/README.displaying-bmps).
881 This option is useful for targets where, due to alignment
882 restrictions, an improperly aligned BMP image will cause a data
883 abort. If you think you will not have problems with unaligned
884 accesses (for example because your toolchain prevents them)
885 there is no need to set this option.
887 config SPLASH_SCREEN_ALIGN
888 bool "Allow positioning the splash image anywhere on the display"
889 depends on SPLASH_SCREEN || CMD_BMP
891 If this option is set the splash image can be freely positioned
892 on the screen. Environment variable "splashpos" specifies the
893 position as "x,y". If a positive number is given it is used as
894 number of pixel from left/top. If a negative number is given it
895 is used as number of pixel from right/bottom. You can also
896 specify 'm' for centering the image.
900 => image at center of screen
902 setenv splashpos 30,20
903 => image at x = 30 and y = 20
905 setenv splashpos -10,m
906 => vertically centered image
907 at x = dspWidth - bmpWidth - 9
910 bool "Control the source of the splash image"
911 depends on SPLASH_SCREEN
913 Use the splash_source.c library. This library provides facilities to
914 declare board specific splash image locations, routines for loading
915 splash image from supported locations, and a way of controlling the
916 selected splash location using the "splashsource" environment
919 This CONFIG works as follows:
921 - If splashsource is set to a supported location name as defined by
922 board code, use that splash location.
923 - If splashsource is undefined, use the first splash location as
925 - If splashsource is set to an unsupported value, do not load a splash
928 A splash source location can describe either storage with raw data, a
929 storage formatted with a file system or a FIT image. In case of a
930 filesystem, the splash screen data is loaded as a file. The name of
931 the splash screen file can be controlled with the environment variable
934 To enable loading the splash image from a FIT image, CONFIG_FIT must
935 be enabled. The FIT image has to start at the 'offset' field address
936 in the selected splash location. The name of splash image within the
937 FIT shall be specified by the environment variable "splashfile".
939 In case the environment variable "splashfile" is not defined the
940 default name 'splash.bmp' will be used.