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Kernel: Add option to force using only the bootloader framebuffer
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
Linus Groh
parent
01b3666894
commit
785c10fda9
5 changed files with 84 additions and 54 deletions
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@ -36,9 +36,14 @@ UNMAP_AFTER_INIT GraphicsManagement::GraphicsManagement()
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{
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}
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bool GraphicsManagement::framebuffer_devices_allowed() const
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bool GraphicsManagement::framebuffer_devices_use_bootloader_framebuffer() const
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{
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return kernel_command_line().are_framebuffer_devices_enabled();
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return kernel_command_line().are_framebuffer_devices_enabled() == CommandLine::FrameBufferDevices::BootloaderOnly;
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}
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bool GraphicsManagement::framebuffer_devices_console_only() const
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{
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return kernel_command_line().are_framebuffer_devices_enabled() == CommandLine::FrameBufferDevices::ConsoleOnly;
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}
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void GraphicsManagement::deactivate_graphical_mode()
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@ -73,7 +78,7 @@ UNMAP_AFTER_INIT bool GraphicsManagement::determine_and_initialize_graphics_devi
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VERIFY(is_vga_compatible_pci_device(device_identifier) || is_display_controller_pci_device(device_identifier));
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auto add_and_configure_adapter = [&](GenericGraphicsAdapter& graphics_device) {
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m_graphics_devices.append(graphics_device);
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if (!framebuffer_devices_allowed()) {
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if (framebuffer_devices_console_only()) {
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graphics_device.enable_consoles();
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return;
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}
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@ -81,52 +86,63 @@ UNMAP_AFTER_INIT bool GraphicsManagement::determine_and_initialize_graphics_devi
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};
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RefPtr<GenericGraphicsAdapter> adapter;
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switch (device_identifier.hardware_id().vendor_id) {
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case PCI::VendorID::QEMUOld:
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if (device_identifier.hardware_id().device_id == 0x1111)
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adapter = BochsGraphicsAdapter::initialize(device_identifier);
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break;
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case PCI::VendorID::VirtualBox:
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if (device_identifier.hardware_id().device_id == 0xbeef)
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adapter = BochsGraphicsAdapter::initialize(device_identifier);
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break;
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case PCI::VendorID::Intel:
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adapter = IntelNativeGraphicsAdapter::initialize(device_identifier);
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break;
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case PCI::VendorID::VirtIO:
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dmesgln("Graphics: Using VirtIO console");
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adapter = Graphics::VirtIOGPU::GraphicsAdapter::initialize(device_identifier);
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break;
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default:
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if (!is_vga_compatible_pci_device(device_identifier))
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break;
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// Note: Although technically possible that a system has a
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// non-compatible VGA graphics device that was initialized by the
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// Multiboot bootloader to provide a framebuffer, in practice we
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// probably want to support these devices natively instead of
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// initializing them as some sort of a generic GenericGraphicsAdapter. For now,
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// the only known example of this sort of device is qxl in QEMU. For VGA
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// compatible devices we don't have a special driver for (e.g. ati-vga,
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// qxl-vga, cirrus-vga, vmware-svga in QEMU), it's much more likely that
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// these devices will be supported by the Multiboot loader that will
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// utilize VESA BIOS extensions (that we don't currently) of these cards
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// support, so we want to utilize the provided framebuffer of these
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// devices, if possible.
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if (!m_vga_adapter && PCI::is_io_space_enabled(device_identifier.address())) {
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if (multiboot_framebuffer_type == MULTIBOOT_FRAMEBUFFER_TYPE_RGB) {
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dmesgln("Graphics: Using a preset resolution from the bootloader");
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adapter = VGACompatibleAdapter::initialize_with_preset_resolution(device_identifier,
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multiboot_framebuffer_addr,
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multiboot_framebuffer_width,
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multiboot_framebuffer_height,
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multiboot_framebuffer_pitch);
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}
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} else {
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dmesgln("Graphics: Using a VGA compatible generic adapter");
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adapter = VGACompatibleAdapter::initialize(device_identifier);
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auto create_bootloader_framebuffer_device = [&]() {
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if (multiboot_framebuffer_type == MULTIBOOT_FRAMEBUFFER_TYPE_RGB) {
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dmesgln("Graphics: Using a preset resolution from the bootloader");
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adapter = VGACompatibleAdapter::initialize_with_preset_resolution(device_identifier,
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multiboot_framebuffer_addr,
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multiboot_framebuffer_width,
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multiboot_framebuffer_height,
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multiboot_framebuffer_pitch);
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}
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};
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if (framebuffer_devices_use_bootloader_framebuffer())
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create_bootloader_framebuffer_device();
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if (!adapter) {
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switch (device_identifier.hardware_id().vendor_id) {
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case PCI::VendorID::QEMUOld:
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if (device_identifier.hardware_id().device_id == 0x1111)
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adapter = BochsGraphicsAdapter::initialize(device_identifier);
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break;
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case PCI::VendorID::VirtualBox:
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if (device_identifier.hardware_id().device_id == 0xbeef)
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adapter = BochsGraphicsAdapter::initialize(device_identifier);
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break;
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case PCI::VendorID::Intel:
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adapter = IntelNativeGraphicsAdapter::initialize(device_identifier);
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break;
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case PCI::VendorID::VirtIO:
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dmesgln("Graphics: Using VirtIO console");
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adapter = Graphics::VirtIOGPU::GraphicsAdapter::initialize(device_identifier);
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break;
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default:
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if (!is_vga_compatible_pci_device(device_identifier))
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break;
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// Note: Although technically possible that a system has a
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// non-compatible VGA graphics device that was initialized by the
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// Multiboot bootloader to provide a framebuffer, in practice we
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// probably want to support these devices natively instead of
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// initializing them as some sort of a generic GenericGraphicsAdapter. For now,
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// the only known example of this sort of device is qxl in QEMU. For VGA
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// compatible devices we don't have a special driver for (e.g. ati-vga,
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// qxl-vga, cirrus-vga, vmware-svga in QEMU), it's much more likely that
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// these devices will be supported by the Multiboot loader that will
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// utilize VESA BIOS extensions (that we don't currently) of these cards
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// support, so we want to utilize the provided framebuffer of these
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// devices, if possible.
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if (!m_vga_adapter && PCI::is_io_space_enabled(device_identifier.address())) {
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create_bootloader_framebuffer_device();
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} else {
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dmesgln("Graphics: Using a VGA compatible generic adapter");
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adapter = VGACompatibleAdapter::initialize(device_identifier);
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}
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break;
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}
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break;
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}
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if (!adapter)
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return false;
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add_and_configure_adapter(*adapter);
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@ -179,8 +195,10 @@ UNMAP_AFTER_INIT bool GraphicsManagement::initialize()
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* be created, so SystemServer will not try to initialize WindowServer.
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*/
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if (!framebuffer_devices_allowed())
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dbgln("Forcing non-initialization of framebuffer devices");
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if (framebuffer_devices_console_only())
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dbgln("Forcing non-initialization of framebuffer devices (console only)");
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else if (framebuffer_devices_use_bootloader_framebuffer())
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dbgln("Forcing use of framebuffer set up by the bootloader");
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PCI::enumerate([&](PCI::DeviceIdentifier const& device_identifier) {
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// Note: Each graphics controller will try to set its native screen resolution
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