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702 lines
24 KiB
702 lines
24 KiB
# |
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# Video configuration |
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# |
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menu "Graphics support" |
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config DM_VIDEO |
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bool "Enable driver model support for LCD/video" |
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depends on DM |
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help |
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This enables driver model for LCD and video devices. These support |
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a bitmap display of various sizes and depths which can be drawn on |
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to display a command-line console or splash screen. Enabling this |
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option compiles in the video uclass and routes all LCD/video access |
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through this. |
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config BACKLIGHT_PWM |
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bool "Generic PWM based Backlight Driver" |
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depends on DM_VIDEO && DM_PWM |
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default y |
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help |
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If you have a LCD backlight adjustable by PWM, say Y to enable |
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this driver. |
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This driver can be use with "simple-panel" and |
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it understands the standard device tree |
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(leds/backlight/pwm-backlight.txt) |
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config BACKLIGHT_GPIO |
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bool "Generic GPIO based Backlight Driver" |
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depends on DM_VIDEO |
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help |
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If you have a LCD backlight adjustable by GPIO, say Y to enable |
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this driver. |
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This driver can be used with "simple-panel" and |
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it understands the standard device tree |
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(leds/backlight/gpio-backlight.txt) |
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config VIDEO_BPP8 |
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bool "Support 8-bit-per-pixel displays" |
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depends on DM_VIDEO |
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default y if DM_VIDEO |
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help |
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Support drawing text and bitmaps onto a 8-bit-per-pixel display. |
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Enabling this will include code to support this display. Without |
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this option, such displays will not be supported and console output |
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will be empty. |
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config VIDEO_BPP16 |
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bool "Support 16-bit-per-pixel displays" |
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depends on DM_VIDEO |
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default y if DM_VIDEO |
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help |
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Support drawing text and bitmaps onto a 16-bit-per-pixel display. |
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Enabling this will include code to support this display. Without |
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this option, such displays will not be supported and console output |
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will be empty. |
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config VIDEO_BPP32 |
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bool "Support 32-bit-per-pixel displays" |
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depends on DM_VIDEO |
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default y if DM_VIDEO |
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help |
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Support drawing text and bitmaps onto a 32-bit-per-pixel display. |
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Enabling this will include code to support this display. Without |
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this option, such displays will not be supported and console output |
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will be empty. |
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config VIDEO_ANSI |
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bool "Support ANSI escape sequences in video console" |
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depends on DM_VIDEO |
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default y if DM_VIDEO |
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help |
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Enable ANSI escape sequence decoding for a more fully functional |
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console. |
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config CONSOLE_NORMAL |
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bool "Support a simple text console" |
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depends on DM_VIDEO |
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default y if DM_VIDEO |
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help |
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Support drawing text on the frame buffer console so that it can be |
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used as a console. Rotation is not supported by this driver (see |
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CONFIG_CONSOLE_ROTATION for that). A built-in 8x16 font is used |
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for the display. |
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config CONSOLE_ROTATION |
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bool "Support rotated displays" |
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depends on DM_VIDEO |
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help |
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Sometimes, for example if the display is mounted in portrait |
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mode or even if it's mounted landscape but rotated by 180degree, |
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we need to rotate our content of the display relative to the |
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framebuffer, so that user can read the messages which are |
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printed out. Enable this option to include a text driver which can |
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support this. The rotation is set by the 'rot' parameter in |
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struct video_priv: 0=unrotated, 1=90 degrees clockwise, 2=180 |
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degrees, 3=270 degrees. |
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config CONSOLE_TRUETYPE |
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bool "Support a console that uses TrueType fonts" |
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depends on DM_VIDEO |
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help |
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TrueTrype fonts can provide outline-drawing capability rather than |
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needing to provide a bitmap for each font and size that is needed. |
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With this option you can adjust the text size and use a variety of |
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fonts. Note that this is noticeably slower than with normal console. |
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config CONSOLE_TRUETYPE_SIZE |
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int "TrueType font size" |
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depends on CONSOLE_TRUETYPE |
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default 18 |
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help |
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This sets the font size for the console. The size is measured in |
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pixels and is the nominal height of a character. Note that fonts |
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are commonly measured in 'points', being 1/72 inch (about 3.52mm). |
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However that measurement depends on the size of your display and |
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there is no standard display density. At present there is not a |
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method to select the display's physical size, which would allow |
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U-Boot to calculate the correct font size. |
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config SYS_WHITE_ON_BLACK |
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bool "Display console as white on a black background" |
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default y if ARCH_AT91 || ARCH_EXYNOS || ARCH_ROCKCHIP || TEGRA || X86 |
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help |
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Normally the display is black on a white background, Enable this |
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option to invert this, i.e. white on a black background. This can be |
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better in low-light situations or to reduce eye strain in some |
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cases. |
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config NO_FB_CLEAR |
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bool "Skip framebuffer clear" |
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help |
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If firmware (whatever loads u-boot) has already put a splash image |
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on screen, you might want to preserve it until whatever u-boot |
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loads takes over the screen. This, for example, can be used to |
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keep splash image on screen until grub graphical boot menu starts. |
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source "drivers/video/fonts/Kconfig" |
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config VIDCONSOLE_AS_LCD |
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bool "Use 'vidconsole' when 'lcd' is seen in stdout" |
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depends on DM_VIDEO |
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help |
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This is a work-around for boards which have 'lcd' in their stdout |
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environment variable, but have moved to use driver model for video. |
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In this case the console will no-longer work. While it is possible |
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to update the environment, the breakage may be confusing for users. |
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This option will be removed around the end of 2016. |
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config VIDEO_COREBOOT |
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bool "Enable coreboot framebuffer driver support" |
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depends on X86 && SYS_COREBOOT |
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help |
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Turn on this option to enable a framebuffer driver when U-Boot is |
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loaded by coreboot where the graphics device is configured by |
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coreboot already. This can in principle be used with any platform |
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that coreboot supports. |
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config VIDEO_EFI |
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bool "Enable EFI framebuffer driver support" |
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depends on EFI_STUB |
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help |
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Turn on this option to enable a framebuffeer driver when U-Boot is |
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loaded as a payload (see README.u-boot_on_efi) by an EFI BIOS where |
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the graphics device is configured by the EFI BIOS already. This can |
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in principle be used with any platform that has an EFI BIOS. |
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config VIDEO_VESA |
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bool "Enable VESA video driver support" |
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default n |
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help |
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Turn on this option to enable a very simple driver which uses vesa |
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to discover the video mode and then provides a frame buffer for use |
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by U-Boot. This can in principle be used with any platform that |
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supports PCI and video cards that support VESA BIOS Extension (VBE). |
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config FRAMEBUFFER_SET_VESA_MODE |
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bool "Set framebuffer graphics resolution" |
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depends on VIDEO_VESA || VIDEO_BROADWELL_IGD |
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help |
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Set VESA/native framebuffer mode (needed for bootsplash and graphical |
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framebuffer console) |
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choice |
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prompt "framebuffer graphics resolution" |
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default FRAMEBUFFER_VESA_MODE_118 |
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depends on FRAMEBUFFER_SET_VESA_MODE |
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help |
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This option sets the resolution used for the U-Boot framebuffer (and |
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bootsplash screen). |
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config FRAMEBUFFER_VESA_MODE_100 |
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bool "640x400 256-color" |
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config FRAMEBUFFER_VESA_MODE_101 |
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bool "640x480 256-color" |
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config FRAMEBUFFER_VESA_MODE_102 |
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bool "800x600 16-color" |
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config FRAMEBUFFER_VESA_MODE_103 |
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bool "800x600 256-color" |
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config FRAMEBUFFER_VESA_MODE_104 |
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bool "1024x768 16-color" |
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config FRAMEBUFFER_VESA_MODE_105 |
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bool "1024x768 256-color" |
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config FRAMEBUFFER_VESA_MODE_106 |
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bool "1280x1024 16-color" |
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config FRAMEBUFFER_VESA_MODE_107 |
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bool "1280x1024 256-color" |
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config FRAMEBUFFER_VESA_MODE_108 |
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bool "80x60 text" |
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config FRAMEBUFFER_VESA_MODE_109 |
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bool "132x25 text" |
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config FRAMEBUFFER_VESA_MODE_10A |
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bool "132x43 text" |
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config FRAMEBUFFER_VESA_MODE_10B |
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bool "132x50 text" |
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config FRAMEBUFFER_VESA_MODE_10C |
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bool "132x60 text" |
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config FRAMEBUFFER_VESA_MODE_10D |
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bool "320x200 32k-color (1:5:5:5)" |
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config FRAMEBUFFER_VESA_MODE_10E |
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bool "320x200 64k-color (5:6:5)" |
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config FRAMEBUFFER_VESA_MODE_10F |
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bool "320x200 16.8M-color (8:8:8)" |
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config FRAMEBUFFER_VESA_MODE_110 |
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bool "640x480 32k-color (1:5:5:5)" |
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config FRAMEBUFFER_VESA_MODE_111 |
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bool "640x480 64k-color (5:6:5)" |
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config FRAMEBUFFER_VESA_MODE_112 |
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bool "640x480 16.8M-color (8:8:8)" |
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config FRAMEBUFFER_VESA_MODE_113 |
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bool "800x600 32k-color (1:5:5:5)" |
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config FRAMEBUFFER_VESA_MODE_114 |
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bool "800x600 64k-color (5:6:5)" |
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config FRAMEBUFFER_VESA_MODE_115 |
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bool "800x600 16.8M-color (8:8:8)" |
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config FRAMEBUFFER_VESA_MODE_116 |
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bool "1024x768 32k-color (1:5:5:5)" |
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config FRAMEBUFFER_VESA_MODE_117 |
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bool "1024x768 64k-color (5:6:5)" |
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config FRAMEBUFFER_VESA_MODE_118 |
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bool "1024x768 16.8M-color (8:8:8)" |
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config FRAMEBUFFER_VESA_MODE_119 |
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bool "1280x1024 32k-color (1:5:5:5)" |
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config FRAMEBUFFER_VESA_MODE_11A |
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bool "1280x1024 64k-color (5:6:5)" |
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config FRAMEBUFFER_VESA_MODE_11B |
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bool "1280x1024 16.8M-color (8:8:8)" |
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config FRAMEBUFFER_VESA_MODE_USER |
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bool "Manually select VESA mode" |
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endchoice |
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# Map the config names to an integer (KB). |
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config FRAMEBUFFER_VESA_MODE |
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prompt "VESA mode" if FRAMEBUFFER_VESA_MODE_USER |
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hex |
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default 0x100 if FRAMEBUFFER_VESA_MODE_100 |
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default 0x101 if FRAMEBUFFER_VESA_MODE_101 |
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default 0x102 if FRAMEBUFFER_VESA_MODE_102 |
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default 0x103 if FRAMEBUFFER_VESA_MODE_103 |
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default 0x104 if FRAMEBUFFER_VESA_MODE_104 |
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default 0x105 if FRAMEBUFFER_VESA_MODE_105 |
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default 0x106 if FRAMEBUFFER_VESA_MODE_106 |
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default 0x107 if FRAMEBUFFER_VESA_MODE_107 |
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default 0x108 if FRAMEBUFFER_VESA_MODE_108 |
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default 0x109 if FRAMEBUFFER_VESA_MODE_109 |
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default 0x10A if FRAMEBUFFER_VESA_MODE_10A |
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default 0x10B if FRAMEBUFFER_VESA_MODE_10B |
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default 0x10C if FRAMEBUFFER_VESA_MODE_10C |
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default 0x10D if FRAMEBUFFER_VESA_MODE_10D |
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default 0x10E if FRAMEBUFFER_VESA_MODE_10E |
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default 0x10F if FRAMEBUFFER_VESA_MODE_10F |
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default 0x110 if FRAMEBUFFER_VESA_MODE_110 |
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default 0x111 if FRAMEBUFFER_VESA_MODE_111 |
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default 0x112 if FRAMEBUFFER_VESA_MODE_112 |
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default 0x113 if FRAMEBUFFER_VESA_MODE_113 |
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default 0x114 if FRAMEBUFFER_VESA_MODE_114 |
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default 0x115 if FRAMEBUFFER_VESA_MODE_115 |
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default 0x116 if FRAMEBUFFER_VESA_MODE_116 |
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default 0x117 if FRAMEBUFFER_VESA_MODE_117 |
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default 0x118 if FRAMEBUFFER_VESA_MODE_118 |
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default 0x119 if FRAMEBUFFER_VESA_MODE_119 |
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default 0x11A if FRAMEBUFFER_VESA_MODE_11A |
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default 0x11B if FRAMEBUFFER_VESA_MODE_11B |
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default 0x117 if FRAMEBUFFER_VESA_MODE_USER |
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config VIDEO_LCD_ANX9804 |
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bool "ANX9804 bridge chip" |
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default n |
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---help--- |
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Support for the ANX9804 bridge chip, which can take pixel data coming |
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from a parallel LCD interface and translate it on the fy into a DP |
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interface for driving eDP TFT displays. It uses I2C for configuration. |
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config VIDEO_LCD_SSD2828 |
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bool "SSD2828 bridge chip" |
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default n |
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---help--- |
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Support for the SSD2828 bridge chip, which can take pixel data coming |
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from a parallel LCD interface and translate it on the fly into MIPI DSI |
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interface for driving a MIPI compatible LCD panel. It uses SPI for |
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configuration. |
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config VIDEO_LCD_SSD2828_TX_CLK |
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int "SSD2828 TX_CLK frequency (in MHz)" |
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depends on VIDEO_LCD_SSD2828 |
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default 0 |
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---help--- |
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The frequency of the crystal, which is clocking SSD2828. It may be |
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anything in the 8MHz-30MHz range and the exact value should be |
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retrieved from the board schematics. Or in the case of Allwinner |
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hardware, it can be usually found as 'lcd_xtal_freq' variable in |
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FEX files. It can be also set to 0 for selecting PCLK from the |
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parallel LCD interface instead of TX_CLK as the PLL clock source. |
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config VIDEO_LCD_SSD2828_RESET |
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string "RESET pin of SSD2828" |
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depends on VIDEO_LCD_SSD2828 |
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default "" |
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---help--- |
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The reset pin of SSD2828 chip. This takes a string in the format |
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understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H. |
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config VIDEO_LCD_HITACHI_TX18D42VM |
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bool "Hitachi tx18d42vm LVDS LCD panel support" |
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depends on VIDEO |
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default n |
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---help--- |
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Support for Hitachi tx18d42vm LVDS LCD panels, these panels have a |
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lcd controller which needs to be initialized over SPI, once that is |
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done they work like a regular LVDS panel. |
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config VIDEO_LCD_SPI_CS |
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string "SPI CS pin for LCD related config job" |
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depends on VIDEO_LCD_SSD2828 || VIDEO_LCD_HITACHI_TX18D42VM |
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default "" |
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---help--- |
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This is one of the SPI communication pins, involved in setting up a |
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working LCD configuration. The exact role of SPI may differ for |
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different hardware setups. The option takes a string in the format |
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understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H. |
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config VIDEO_LCD_SPI_SCLK |
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string "SPI SCLK pin for LCD related config job" |
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depends on VIDEO_LCD_SSD2828 || VIDEO_LCD_HITACHI_TX18D42VM |
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default "" |
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---help--- |
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This is one of the SPI communication pins, involved in setting up a |
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working LCD configuration. The exact role of SPI may differ for |
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different hardware setups. The option takes a string in the format |
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understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H. |
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config VIDEO_LCD_SPI_MOSI |
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string "SPI MOSI pin for LCD related config job" |
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depends on VIDEO_LCD_SSD2828 || VIDEO_LCD_HITACHI_TX18D42VM |
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default "" |
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---help--- |
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This is one of the SPI communication pins, involved in setting up a |
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working LCD configuration. The exact role of SPI may differ for |
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different hardware setups. The option takes a string in the format |
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understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H. |
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config VIDEO_LCD_SPI_MISO |
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string "SPI MISO pin for LCD related config job (optional)" |
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depends on VIDEO_LCD_SSD2828 |
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default "" |
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---help--- |
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This is one of the SPI communication pins, involved in setting up a |
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working LCD configuration. The exact role of SPI may differ for |
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different hardware setups. If wired up, this pin may provide additional |
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useful functionality. Such as bi-directional communication with the |
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hardware and LCD panel id retrieval (if the panel can report it). The |
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option takes a string in the format understood by 'name_to_gpio' |
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function, e.g. PH1 for pin 1 of port H. |
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|
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config VIDEO_MVEBU |
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bool "Armada XP LCD controller" |
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default n |
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---help--- |
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Support for the LCD controller integrated in the Marvell |
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Armada XP SoC. |
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config VIDEO_OMAP3 |
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bool "Enable OMAP3+ DSS Support" |
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depends on ARCH_OMAP2PLUS |
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help |
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This enables the Display subsystem (DSS) on OMAP3+ boards. |
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config I2C_EDID |
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bool "Enable EDID library" |
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default n |
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help |
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This enables library for accessing EDID data from an LCD panel. |
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config DISPLAY |
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bool "Enable Display support" |
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depends on DM |
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default n |
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select I2C_EDID |
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help |
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This supports drivers that provide a display, such as eDP (Embedded |
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DisplayPort) and HDMI (High Definition Multimedia Interface). |
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The devices provide a simple interface to start up the display, |
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read display information and enable it. |
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config NXP_TDA19988 |
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bool "Enable NXP TDA19988 support" |
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depends on DISPLAY |
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default n |
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help |
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This enables support for the NXP TDA19988 HDMI encoder. This encoder |
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will convert RGB data streams into HDMI-encoded signals. |
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config ATMEL_HLCD |
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bool "Enable ATMEL video support using HLCDC" |
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depends on DM_VIDEO |
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help |
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HLCDC supports video output to an attached LCD panel. |
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config LOGICORE_DP_TX |
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bool "Enable Logicore DP TX driver" |
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depends on DISPLAY |
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help |
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Enable the driver for the transmitter part of the Xilinx LogiCORE |
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DisplayPort, a IP core for Xilinx FPGAs that implements a DisplayPort |
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video interface as defined by VESA DisplayPort v1.2. |
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|
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Note that this is a pure transmitter device, and has no display |
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capabilities by itself. |
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|
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config VIDEO_BROADWELL_IGD |
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bool "Enable Intel Broadwell integrated graphics device" |
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depends on X86 |
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help |
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This enables support for integrated graphics on Intel broadwell |
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devices. Initialisation is mostly performed by a VGA boot ROM, with |
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some setup handled by U-Boot itself. The graphics adaptor works as |
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a VESA device and supports LCD panels, eDP and LVDS outputs. |
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Configuration of most aspects of device operation is performed using |
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a special tool which configures the VGA ROM, but the graphics |
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resolution can be selected in U-Boot. |
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|
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config VIDEO_IVYBRIDGE_IGD |
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bool "Enable Intel Ivybridge integration graphics support" |
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depends on X86 |
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help |
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This enables support for integrated graphics on Intel ivybridge |
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devices. Initialisation is mostly performed by a VGA boot ROM, with |
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some setup handled by U-Boot itself. The graphics adaptor works as |
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a VESA device and supports LCD panels, eDP and LVDS outputs. |
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Configuration of most aspects of device operation is performed using |
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a special tool which configures the VGA ROM, but the graphics |
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resolution can be selected in U-Boot. |
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|
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config VIDEO_FSL_DCU_FB |
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bool "Enable Freescale Display Control Unit" |
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depends on VIDEO |
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help |
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This enables support for Freescale Display Control Unit (DCU4) |
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module found on Freescale Vybrid and QorIQ family of SoCs. |
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config VIDEO_FSL_DCU_MAX_FB_SIZE_MB |
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int "Freescale DCU framebuffer size" |
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depends on VIDEO_FSL_DCU_FB |
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default 4194304 |
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help |
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Set maximum framebuffer size to be used for Freescale Display |
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Controller Unit (DCU4). |
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source "drivers/video/rockchip/Kconfig" |
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config VIDEO_ARM_MALIDP |
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bool "Enable Arm Mali Display Processor support" |
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depends on DM_VIDEO && OF_CONTROL |
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select VEXPRESS_CLK |
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help |
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This enables support for Arm Ltd Mali Display Processors from |
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the DP500, DP550 and DP650 family. |
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|
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config VIDEO_SANDBOX_SDL |
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bool "Enable sandbox video console using SDL" |
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depends on SANDBOX |
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help |
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When using sandbox you can enable an emulated LCD display which |
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appears as an SDL (Simple DirectMedia Layer) window. This is a |
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console device and can display stdout output. Within U-Boot is is |
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a normal bitmap display and can display images as well as text. |
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|
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source "drivers/video/stm32/Kconfig" |
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|
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config VIDEO_TEGRA20 |
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bool "Enable LCD support on Tegra20" |
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depends on OF_CONTROL |
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help |
|
Tegra20 supports video output to an attached LCD panel as well as |
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other options such as HDMI. Only the LCD is supported in U-Boot. |
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This option enables this support which can be used on devices which |
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have an LCD display connected. |
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|
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config VIDEO_TEGRA124 |
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bool "Enable video support on Tegra124" |
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depends on DM_VIDEO |
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help |
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Tegra124 supports many video output options including eDP and |
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HDMI. At present only eDP is supported by U-Boot. This option |
|
enables this support which can be used on devices which |
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have an eDP display connected. |
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|
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source "drivers/video/bridge/Kconfig" |
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config VIDEO |
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bool "Enable legacy video support" |
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depends on !DM_VIDEO |
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help |
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Define this for video support, without using driver model. Some |
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drivers use this because they are not yet converted to driver |
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model. Video drivers typically provide a colour text console and |
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cursor. |
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config VIDEO_IPUV3 |
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bool "i.MX IPUv3 Core video support" |
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depends on VIDEO && MX6 |
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help |
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This enables framebuffer driver for i.MX processors working |
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on the IPUv3(Image Processing Unit) internal graphic processor. |
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config CFB_CONSOLE |
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bool "Enable colour frame buffer console" |
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depends on VIDEO |
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default y if VIDEO |
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help |
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Enables the colour frame buffer driver. This supports colour |
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output on a bitmap display from an in-memory frame buffer. |
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Several colour devices are supported along with various options to |
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adjust the supported features. The driver is implemented in |
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cfb_console.c |
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The following defines are needed (cf. smiLynxEM, i8042) |
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VIDEO_FB_LITTLE_ENDIAN graphic memory organisation |
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(default big endian) |
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VIDEO_HW_RECTFILL graphic chip supports |
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rectangle fill (cf. smiLynxEM) |
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VIDEO_HW_BITBLT graphic chip supports |
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bit-blit (cf. smiLynxEM) |
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VIDEO_VISIBLE_COLS visible pixel columns (cols=pitch) |
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VIDEO_VISIBLE_ROWS visible pixel rows |
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VIDEO_PIXEL_SIZE bytes per pixel |
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VIDEO_DATA_FORMAT graphic data format |
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(0-5, cf. cfb_console.c) |
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VIDEO_FB_ADRS framebuffer address |
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VIDEO_KBD_INIT_FCT keyboard int fct (i.e. rx51_kp_init()) |
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VIDEO_TSTC_FCT test char fct (i.e. rx51_kp_tstc) |
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VIDEO_GETC_FCT get char fct (i.e. rx51_kp_getc) |
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CONFIG_VIDEO_LOGO display Linux logo in upper left corner |
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CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of linux_logo.h |
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for logo. Requires CONFIG_VIDEO_LOGO |
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CONFIG_CONSOLE_EXTRA_INFO |
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additional board info beside |
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the logo |
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CONFIG_HIDE_LOGO_VERSION |
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do not display bootloader |
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version string |
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When CONFIG_CFB_CONSOLE is defined, the video console is the |
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default console. The serial console can be forced by setting the |
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environment 'console=serial'. |
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config CFB_CONSOLE_ANSI |
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bool "Support ANSI escape sequences" |
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depends on CFB_CONSOLE |
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help |
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This allows the colour buffer frame buffer driver to support |
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a limited number of ANSI escape sequences (cursor control, |
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erase functions and limited graphics rendition control). Normal |
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output from U-Boot will pass through this filter. |
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config VGA_AS_SINGLE_DEVICE |
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bool "Set the video as an output-only device" |
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depends on CFB_CONSOLE |
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default y |
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help |
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If enable the framebuffer device will be initialized as an |
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output-only device. The Keyboard driver will not be set up. This |
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may be used if you have no keyboard device, or more than one |
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(USB Keyboard, AT Keyboard). |
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config VIDEO_SW_CURSOR |
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bool "Enable a software cursor" |
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depends on CFB_CONSOLE |
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default y if CFB_CONSOLE |
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help |
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This draws a cursor after the last character. No blinking is |
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provided. This makes it possible to see the current cursor |
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position when entering text on the console. It is recommended to |
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enable this. |
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config CONSOLE_EXTRA_INFO |
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bool "Display additional board information" |
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depends on CFB_CONSOLE |
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help |
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Display additional board information strings that normally go to |
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the serial port. When this option is enabled, a board-specific |
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function video_get_info_str() is called to get the string for |
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each line of the display. The function should return the string, |
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which can be empty if there is nothing to display for that line. |
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config CONSOLE_SCROLL_LINES |
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int "Number of lines to scroll the console by" |
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depends on CFB_CONSOLE || DM_VIDEO || LCD |
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default 1 |
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help |
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When the console need to be scrolled, this is the number of |
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lines to scroll by. It defaults to 1. Increasing this makes the |
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console jump but can help speed up operation when scrolling |
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is slow. |
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config SYS_CONSOLE_BG_COL |
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hex "Background colour" |
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depends on CFB_CONSOLE |
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default 0x00 |
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help |
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Defines the background colour for the console. The value is from |
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0x00 to 0xff and the meaning depends on the graphics card. |
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Typically, 0x00 means black and 0xff means white. Do not set |
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the background and foreground to the same colour or you will see |
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nothing. |
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config SYS_CONSOLE_FG_COL |
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hex "Foreground colour" |
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depends on CFB_CONSOLE |
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default 0xa0 |
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help |
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Defines the foreground colour for the console. The value is from |
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0x00 to 0xff and the meaning depends on the graphics card. |
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Typically, 0x00 means black and 0xff means white. Do not set |
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the background and foreground to the same colour or you will see |
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nothing. |
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config LCD |
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bool "Enable legacy LCD support" |
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help |
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Define this to enable LCD support (for output to LCD display). |
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You will also need to select an LCD driver using an additional |
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CONFIG option. See the README for details. Drives which have been |
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converted to driver model will instead used CONFIG_DM_VIDEO. |
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config VIDEO_DW_HDMI |
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bool |
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help |
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Enables the common driver code for the Designware HDMI TX |
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block found in SoCs from various vendors. |
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As this does not provide any functionality by itself (but |
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rather requires a SoC-specific glue driver to call it), it |
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can not be enabled from the configuration menu. |
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config VIDEO_SIMPLE |
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bool "Simple display driver for preconfigured display" |
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help |
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Enables a simple generic display driver which utilizes the |
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simple-framebuffer devicetree bindings. |
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This driver assumes that the display hardware has been initialized |
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before u-boot starts, and u-boot will simply render to the pre- |
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allocated frame buffer surface. |
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config VIDEO_DT_SIMPLEFB |
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bool "Enable SimpleFB support for passing framebuffer to OS" |
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help |
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Enables the code to pass the framebuffer to the kernel as a |
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simple framebuffer in the device tree. |
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The video output is initialized by U-Boot, and kept by the |
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kernel. |
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endmenu
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