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https://github.com/RGBCube/serenity
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If there's no PCI bus, then it's safe to assume that the x86 machine we run on supports VGA text mode console output with an ISA VGA adapter. If this is the case, we just instantiate a ISAVGAAdapter object that assumes this situation and allows us to boot into VGA text mode console.
72 lines
3 KiB
C++
72 lines
3 KiB
C++
/*
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* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Graphics/Console/ContiguousFramebufferConsole.h>
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#include <Kernel/Graphics/Console/TextModeConsole.h>
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#include <Kernel/Graphics/GraphicsManagement.h>
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#include <Kernel/Graphics/VGA/PCIAdapter.h>
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#include <Kernel/Sections.h>
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namespace Kernel {
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UNMAP_AFTER_INIT NonnullRefPtr<PCIVGACompatibleAdapter> PCIVGACompatibleAdapter::initialize_with_preset_resolution(PCI::DeviceIdentifier const& pci_device_identifier, PhysicalAddress m_framebuffer_address, size_t framebuffer_width, size_t framebuffer_height, size_t framebuffer_pitch)
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{
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return adopt_ref(*new PCIVGACompatibleAdapter(pci_device_identifier.address(), m_framebuffer_address, framebuffer_width, framebuffer_height, framebuffer_pitch));
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}
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UNMAP_AFTER_INIT NonnullRefPtr<PCIVGACompatibleAdapter> PCIVGACompatibleAdapter::initialize(PCI::DeviceIdentifier const& pci_device_identifier)
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{
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return adopt_ref(*new PCIVGACompatibleAdapter(pci_device_identifier.address()));
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}
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UNMAP_AFTER_INIT void PCIVGACompatibleAdapter::initialize_framebuffer_devices()
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{
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// We might not have any pre-set framebuffer, so if that's the case - don't try to initialize one.
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if (m_framebuffer_address.is_null())
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return;
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VERIFY(m_framebuffer_width);
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VERIFY(m_framebuffer_width != 0);
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VERIFY(m_framebuffer_height != 0);
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VERIFY(m_framebuffer_pitch != 0);
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m_framebuffer_device = FramebufferDevice::create(*this, m_framebuffer_address, m_framebuffer_width, m_framebuffer_height, m_framebuffer_pitch);
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// FIXME: Would be nice to be able to return ErrorOr<void> here.
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VERIFY(!m_framebuffer_device->try_to_initialize().is_error());
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}
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UNMAP_AFTER_INIT PCIVGACompatibleAdapter::PCIVGACompatibleAdapter(PCI::Address address)
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: PCI::Device(address)
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{
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m_framebuffer_console = Graphics::TextModeConsole::initialize();
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GraphicsManagement::the().set_console(*m_framebuffer_console);
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}
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UNMAP_AFTER_INIT PCIVGACompatibleAdapter::PCIVGACompatibleAdapter(PCI::Address address, PhysicalAddress framebuffer_address, size_t framebuffer_width, size_t framebuffer_height, size_t framebuffer_pitch)
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: PCI::Device(address)
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, m_framebuffer_address(framebuffer_address)
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, m_framebuffer_width(framebuffer_width)
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, m_framebuffer_height(framebuffer_height)
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, m_framebuffer_pitch(framebuffer_pitch)
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{
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m_framebuffer_console = Graphics::ContiguousFramebufferConsole::initialize(framebuffer_address, framebuffer_width, framebuffer_height, framebuffer_pitch);
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GraphicsManagement::the().set_console(*m_framebuffer_console);
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}
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void PCIVGACompatibleAdapter::enable_consoles()
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{
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VERIFY(m_framebuffer_console);
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if (m_framebuffer_device)
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m_framebuffer_device->deactivate_writes();
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m_framebuffer_console->enable();
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}
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void PCIVGACompatibleAdapter::disable_consoles()
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{
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VERIFY(m_framebuffer_device);
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VERIFY(m_framebuffer_console);
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m_framebuffer_console->disable();
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m_framebuffer_device->activate_writes();
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}
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}
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