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In the EFI config table, rename LINUX_EFI_SCREEN_INFO_TABLE_GUID to LINUX_EFI_PRIMARY_DISPLAY_TABLE_GUID. Read sysfb_primary_display from the entry. In addition to the screen_info, the entry now also contains EDID information. In libstub, replace struct screen_info with struct sysfb_display_info from the kernel's sysfb_primary_display and rename functions accordingly. Transfer it to the runtime kernel using the kernel's global state or the LINUX_EFI_PRIMARY_DISPLAY_TABLE_GUID config-table entry. With CONFIG_FIRMWARE_EDID=y, libstub now transfers the GOP device's EDID information to the kernel. If CONFIG_FIRMWARE_EDID=n, EDID information is disabled. Make the Kconfig symbol CONFIG_FIRMWARE_EDID available with EFI. Setting the value to 'n' disables EDID support. Also rename screen_info.c to primary_display.c and adapt the contained comment according to the changes. Link: https://lore.kernel.org/all/20251126160854.553077-8-tzimmermann@suse.de/ Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> [ardb: depend on EFI_GENERIC_STUB not EFI, fix conflicts after dropping the preceding patch from the series] Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
94 lines
1.9 KiB
Text
94 lines
1.9 KiB
Text
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Video configuration
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#
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menu "Graphics support"
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config APERTURE_HELPERS
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bool
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help
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Support tracking and hand-over of aperture ownership. Required
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by graphics drivers for firmware-provided framebuffers.
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config SCREEN_INFO
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bool
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default n
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config STI_CORE
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bool
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depends on PARISC
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help
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STI refers to the HP "Standard Text Interface" which is a set of
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BIOS routines contained in a ROM chip in HP PA-RISC based machines.
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config VIDEO
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bool
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default n
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source "drivers/auxdisplay/Kconfig"
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if HAS_IOMEM
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config HAVE_FB_ATMEL
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bool
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source "drivers/char/agp/Kconfig"
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source "drivers/gpu/vga/Kconfig"
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source "drivers/gpu/host1x/Kconfig"
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source "drivers/gpu/ipu-v3/Kconfig"
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source "drivers/gpu/nova-core/Kconfig"
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source "drivers/gpu/drm/Kconfig"
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menu "Frame buffer Devices"
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source "drivers/video/fbdev/Kconfig"
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endmenu
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source "drivers/video/backlight/Kconfig"
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config VGASTATE
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tristate
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default n
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config VIDEOMODE_HELPERS
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bool
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config HDMI
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bool
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endif # HAS_IOMEM
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config FIRMWARE_EDID
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bool "Enable firmware EDID"
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depends on EFI_GENERIC_STUB || X86
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help
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This enables access to the EDID transferred from the firmware.
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On EFI systems, the EDID comes from the same device as the
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primary GOP. On x86 with BIOS, it comes from the VESA BIOS.
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DRM display drivers will be able to export the information
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to userspace.
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Also enable this if DDC/I2C transfers do not work for your driver
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and if you are using nvidiafb, i810fb or savagefb.
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In general, choosing Y for this option is safe. If you
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experience extremely long delays while booting before you get
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something on your display, try setting this to N. Matrox cards in
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combination with certain motherboards and monitors are known to
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suffer from this problem.
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if VT
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source "drivers/video/console/Kconfig"
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endif
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if FB_CORE || SGI_NEWPORT_CONSOLE
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source "drivers/video/logo/Kconfig"
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endif
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source "drivers/gpu/trace/Kconfig"
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endmenu
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