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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.
36 lines
1.0 KiB
C++
36 lines
1.0 KiB
C++
/*
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* Copyright (c) 2021-2022, 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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#pragma once
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#include <AK/Types.h>
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#include <Kernel/Bus/PCI/Device.h>
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#include <Kernel/Graphics/Console/Console.h>
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#include <Kernel/Graphics/FramebufferDevice.h>
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#include <Kernel/Graphics/GenericGraphicsAdapter.h>
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#include <Kernel/PhysicalAddress.h>
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namespace Kernel {
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class VGACompatibleAdapter : public GenericGraphicsAdapter {
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public:
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virtual bool modesetting_capable() const override { return false; }
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virtual bool double_framebuffering_capable() const override { return false; }
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virtual bool vga_compatible() const override final { return true; }
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virtual bool try_to_set_resolution(size_t, size_t, size_t) override { return false; }
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virtual bool set_y_offset(size_t, size_t) override { return false; }
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ErrorOr<ByteBuffer> get_edid(size_t) const override { return Error::from_errno(ENOTSUP); }
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protected:
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VGACompatibleAdapter() = default;
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RefPtr<Graphics::Console> m_framebuffer_console;
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};
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}
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