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Kernel: Add option to force using only the bootloader framebuffer

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This allows forcing the use of only the framebuffer set up by the
bootloader and skips instantiating devices for any other graphics
cards that may be present.
This commit is contained in:
Tom 2022-01-05 14:45:29 -07:00 • committed by Linus Groh
parent 01b3666894
commit 785c10fda9
5 changed files with 84 additions and 54 deletions
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9
Kernel/CommandLine.cpp
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@ -245,9 +245,14 @@ PanicMode CommandLine::panic_mode(Validate should_validate) const
return PanicMode::Halt;
}
UNMAP_AFTER_INIT bool CommandLine::are_framebuffer_devices_enabled() const
UNMAP_AFTER_INIT auto CommandLine::are_framebuffer_devices_enabled() const -> FrameBufferDevices
{
return lookup("fbdev"sv).value_or("on"sv) == "on"sv;
const auto fbdev_value = lookup("fbdev"sv).value_or("on"sv);
if (fbdev_value == "on"sv)
return FrameBufferDevices::Enabled;
if (fbdev_value == "bootloader"sv)
return FrameBufferDevices::BootloaderOnly;
return FrameBufferDevices::ConsoleOnly;
}
StringView CommandLine::userspace_init() const