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Kernel: Move PC BIOS-related code to the x86_64 architecture directory

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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.
This commit is contained in:
Liav A 2023-06-09 21:22:30 +03:00 • committed by Jelle Raaijmakers
parent 5fd975da8f
commit d550b09871
12 changed files with 49 additions and 44 deletions
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42
Kernel/Arch/x86_64/Firmware/PCBIOS/SysFSDirectory.h Normal file
View file

@ -0,0 +1,42 @@
/*
* 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/LockRefPtr.h>
#include <Kernel/Memory/PhysicalAddress.h>
namespace Kernel {
class SysFSBIOSDirectory : public SysFSDirectory {
public:
virtual StringView name() const override { return "bios"sv; }
static NonnullRefPtr<SysFSBIOSDirectory> must_create(SysFSFirmwareDirectory&);
void create_components();
private:
explicit SysFSBIOSDirectory(SysFSFirmwareDirectory&);
void set_dmi_64_bit_entry_initialization_values();
void set_dmi_32_bit_entry_initialization_values();
void initialize_dmi_exposer();
Optional<PhysicalAddress> find_dmi_entry64bit_point();
Optional<PhysicalAddress> find_dmi_entry32bit_point();
PhysicalAddress m_dmi_entry_point;
PhysicalAddress m_smbios_structure_table;
bool m_using_64bit_dmi_entry_point { false };
size_t m_smbios_structure_table_length { 0 };
size_t m_dmi_entry_point_length { 0 };
};
}