mirror of
https://github.com/RGBCube/serenity
synced 2025-07-19 05:17:35 +00:00
d550b09871
All code that is related to PC BIOS should not be in the Kernel/Firmware directory as this directory is for abstracted and platform-agnostic code like ACPI (and device tree parsing in the future). This fixes a problem with the aarch64 architecure, as these machines don't have any PC-BIOS in them so actually trying to access these memory locations (EBDA, BIOS ROM) does not make any sense, as they're specific to x86 machines only.
41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
/*
|
|
* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/RefPtr.h>
|
|
#include <AK/Types.h>
|
|
#include <AK/Vector.h>
|
|
#include <Kernel/FileSystem/SysFS/Subsystems/Firmware/Directory.h>
|
|
#include <Kernel/Library/KBuffer.h>
|
|
#include <Kernel/Library/LockRefPtr.h>
|
|
#include <Kernel/Memory/PhysicalAddress.h>
|
|
|
|
namespace Kernel {
|
|
|
|
class SysFSPCBIOSComponent final : public SysFSComponent {
|
|
public:
|
|
enum class Type {
|
|
DMIEntryPoint,
|
|
SMBIOSTable,
|
|
};
|
|
|
|
public:
|
|
static NonnullRefPtr<SysFSPCBIOSComponent> must_create(Type, PhysicalAddress, size_t blob_size);
|
|
virtual StringView name() const override;
|
|
virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
|
|
|
|
private:
|
|
ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const;
|
|
SysFSPCBIOSComponent(Type, PhysicalAddress, size_t blob_size);
|
|
|
|
virtual size_t size() const override { return m_blob_length; }
|
|
|
|
PhysicalAddress const m_blob_paddr;
|
|
size_t const m_blob_length { 0 };
|
|
Type const m_type { Type::DMIEntryPoint };
|
|
};
|
|
}
|