[PATCH v4 01/15] drivers: video: Kconfig: Add configs for enabling video at SPL
Devarsh Thakkar
devarsht at ti.com
Thu Mar 30 10:52:49 CEST 2023
Hi Nikhil,
Thanks for the patch.
On 29/03/23 17:31, Nikhil M Jain wrote:
> Add Kconfigs which enable the video driver and splash screen at SPL
> stage only and not at u-boot proper. The existing Kconfigs from u-boot
> proper were not used to make SPL splash screen independent to them.
>
> Signed-off-by: Nikhil M Jain <n-jain1 at ti.com>
Reviewed-by: Devarsh Thakkar <devarsht at ti.com>
Regards
Devarsh
> ---
> V4:
> - No change
>
> V3:
> - Add separate SPL video and splash configs
> - Reviewed-by tag not added due to additional changes in V3
>
> V2:
> - No change
>
> drivers/video/Kconfig | 221 ++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 221 insertions(+)
>
> diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
> index 2a76d19cc8..6ced6e0c41 100644
> --- a/drivers/video/Kconfig
> +++ b/drivers/video/Kconfig
> @@ -900,4 +900,225 @@ config BMP_32BPP
>
> endif # VIDEO
>
> +config SPL_VIDEO
> + bool "Enable driver model support for LCD/video"
> + depends on SPL_DM
> + help
> + The video subsystem adds a small amount of overhead to the image.
> + If this is acceptable and you have a need to use video drivers in
> + SPL, enable this option. It might provide a cleaner interface to
> + setting up video within SPL, and allows the same drivers to be
> + used as U-Boot proper.
> +
> +if SPL_VIDEO
> +source "drivers/video/tidss/Kconfig"
> +
> +config SPL_VIDEO_LOGO
> + bool "Show the U-Boot logo on the display atSPL"
> + default y if !SPL_SPLASH_SCREEN
> + select VIDEO_BMP_RLE8
> + help
> + This enables showing the U-Boot logo on the display when a video
> + device is probed. It appears at the top right. The logo itself is at
> + tools/logos/u-boot_logo.bmp and looks best when the display has a
> + black background.
> +
> +config SPL_SPLASH_SCREEN
> + bool "Show a splash-screen image at SPL"
> + help
> + If this option is set, the environment is checked for a variable
> + "splashimage" at spl stage.
> +
> +config SPL_SYS_WHITE_ON_BLACK
> + bool "Display console as white on a black background at SPL"
> + help
> + Normally the display is black on a white background, Enable this
> + option to invert this, i.e. white on a black background at spl stage.
> + This can be better in low-light situations or to reduce eye strain in
> + some cases.
> +
> +config SPL_VIDEO_PCI_DEFAULT_FB_SIZE
> + hex "Default framebuffer size to use if no drivers request it at SPL"
> + default 0x1000000 if X86 && PCI
> + default 0 if !(X86 && PCI)
> + help
> + Generally, video drivers request the amount of memory they need for
> + the frame buffer when they are bound, by setting the size field in
> + struct video_uc_plat. That memory is then reserved for use after
> + relocation. But PCI drivers cannot be bound before relocation unless
> + they are mentioned in the devicetree.
> +
> + With this value set appropriately, it is possible for PCI video
> + devices to have a framebuffer allocated by U-Boot.
> +
> + Note: the framebuffer needs to be large enough to store all pixels at
> + maximum resolution. For example, at 1920 x 1200 with 32 bits per
> + pixel, 2560 * 1600 * 32 / 8 = 0xfa0000 bytes are needed.
> +
> +config SPL_CONSOLE_SCROLL_LINES
> + int "Number of lines to scroll the console by at SPL"
> + default 1
> + help
> + When the console need to be scrolled, this is the number of
> + lines to scroll by. It defaults to 1. Increasing this makes the
> + console jump but can help speed up operation when scrolling
> + is slow.
> +
> +config SPL_CONSOLE_NORMAL
> + bool "Support a simple text console at SPL"
> + default y
> + help
> + Support drawing text on the frame buffer console so that it can be
> + used as a console. Rotation is not supported by this driver (see
> + CONFIG_CONSOLE_ROTATION for that). A built-in 8x16 font is used
> + for the display.
> +
> +config SPL_BACKLIGHT
> + bool "Enable panel backlight uclass support at SPL"
> + default y
> + help
> + This provides backlight uclass driver that enables basic panel
> + backlight support.
> +
> +config SPL_PANEL
> + bool "Enable panel uclass support at SPL"
> + default y
> + help
> + This provides panel uclass driver that enables basic panel support.
> +
> +config SPL_SIMPLE_PANEL
> + bool "Enable simple panel support at SPL"
> + depends on SPL_PANEL && SPL_BACKLIGHT && SPL_DM_GPIO
> + default y
> + help
> + This turns on a simple panel driver that enables a compatible
> + video panel.
> +
> +config SPL_SYS_WHITE_ON_BLACK
> + bool "Display console as white on a black background at SPL"
> + help
> + Normally the display is black on a white background, Enable this
> + option to invert this, i.e. white on a black background at spl stage.
> + This can be better in low-light situations or to reduce eye strain in
> + some cases.
> +
> +if SPL_SPLASH_SCREEN
> +
> +config SPL_SPLASH_SCREEN_ALIGN
> + bool "Allow positioning the splash image anywhere on the display at SPL"
> + help
> + If this option is set the splash image can be freely positioned
> + on the screen only at SPL. Environment variable "splashpos" specifies
> + the position as "x,y". If a positive number is given it is used as
> + number of pixel from left/top. If a negative number is given it
> + is used as number of pixel from right/bottom.
> +
> +config SPL_SPLASH_SOURCE
> + bool "Control the source of the splash image at SPL"
> + help
> + Use the splash_source.c library. This library provides facilities to
> + declare board specific splash image locations, routines for loading
> + splash image from supported locations, and a way of controlling the
> + selected splash location using the "splashsource" environment
> + variable.
> +
> + This CONFIG works as follows:
> +
> + - If splashsource is set to a supported location name as defined by
> + board code, use that splash location.
> + - If splashsource is undefined, use the first splash location as
> + default.
> + - If splashsource is set to an unsupported value, do not load a splash
> + screen.
> +
> + A splash source location can describe either storage with raw data, a
> + storage formatted with a file system or a FIT image. In case of a
> + filesystem, the splash screen data is loaded as a file. The name of
> + the splash screen file can be controlled with the environment variable
> + "splashfile".
> +
> + To enable loading the splash image from a FIT image, CONFIG_FIT must
> + be enabled. The FIT image has to start at the 'offset' field address
> + in the selected splash location. The name of splash image within the
> + FIT shall be specified by the environment variable "splashfile".
> +
> + In case the environment variable "splashfile" is not defined the
> + default name 'splash.bmp' will be used.
> +
> +endif # SPL_SPLASH_SCREEN
> +
> +config SPL_VIDEO_BMP_GZIP
> + bool "Gzip compressed BMP image support at SPL"
> + depends on SPL_SPLASH_SCREEN || SPL_CMD_BMP
> + help
> + If this option is set, additionally to standard BMP
> + images, gzipped BMP images can be displayed via the
> + splashscreen supportat SPL stage.
> +
> +config SPL_VIDEO_LOGO_MAX_SIZE
> + hex "Maximum size of the bitmap logo in bytes at SPL"
> + default 0x100000
> + help
> + Sets the maximum uncompressed size of the logo. This is needed when
> + decompressing a BMP file using the gzip algorithm, since it cannot
> + read the size from the bitmap header.
> +
> +config SPL_VIDEO_BMP_RLE8
> + bool "Run length encoded BMP image (RLE8) support at SPL"
> + help
> + If this option is set, the 8-bit RLE compressed BMP images
> + is supported.
> +
> +config SPL_BMP_16BPP
> + bool "16-bit-per-pixel BMP image support at SPL"
> + help
> + Support display of bitmaps file with 16-bit-per-pixel
> +
> +config SPL_BMP_24BPP
> + bool "24-bit-per-pixel BMP image support at SPL"
> + help
> + Support display of bitmaps file with 24-bit-per-pixel.
> +
> +config SPL_BMP_32BPP
> + bool "32-bit-per-pixel BMP image support at SPL"
> + help
> + Support display of bitmaps file with 32-bit-per-pixel.
> +
> +config SPL_VIDEO_BPP8
> + bool "Support 8-bit-per-pixel displays at SPL"
> + default y
> + help
> + Support drawing text and bitmaps onto a 8-bit-per-pixel display.
> + Enabling this will include code to support this display. Without
> + this option, such displays will not be supported and console output
> + will be empty.
> +
> +config SPL_VIDEO_BPP16
> + bool "Support 16-bit-per-pixel displays at SPL"
> + default y
> + help
> + Support drawing text and bitmaps onto a 16-bit-per-pixel display.
> + Enabling this will include code to support this display. Without
> + this option, such displays will not be supported and console output
> + will be empty.
> +
> +config SPL_VIDEO_BPP32
> + bool "Support 32-bit-per-pixel displays at SPL"
> + default y
> + help
> + Support drawing text and bitmaps onto a 32-bit-per-pixel display.
> + Enabling this will include code to support this display. Without
> + this option, such displays will not be supported and console output
> + will be empty.
> +
> +config SPL_HIDE_LOGO_VERSION
> + bool "Hide the version information on the splash screen at SPL"
> + help
> + Normally the U-Boot version string is shown on the display when the
> + splash screen is enabled. This information is not otherwise visible
> + since video starts up after U-Boot has displayed the initial banner.
> +
> + Enable this option to hide this information.
> +endif
> +
> endmenu
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