mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-30 00:31:14 +00:00
79fa9765ca
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
119 lines
3.2 KiB
C++
119 lines
3.2 KiB
C++
/*
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
* Copyright (c) 2021, 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.h>
|
|
#include <Kernel/Firmware/SysFSFirmware.h>
|
|
#include <Kernel/KBuffer.h>
|
|
#include <Kernel/Memory/MappedROM.h>
|
|
#include <Kernel/Memory/Region.h>
|
|
#include <Kernel/PhysicalAddress.h>
|
|
#include <Kernel/VirtualAddress.h>
|
|
|
|
namespace Kernel::SMBIOS {
|
|
|
|
struct [[gnu::packed]] LegacyEntryPoint32bit {
|
|
char legacy_sig[5];
|
|
u8 checksum2;
|
|
u16 smboios_table_length;
|
|
u32 smbios_table_ptr;
|
|
u16 smbios_tables_count;
|
|
u8 smbios_bcd_revision;
|
|
};
|
|
|
|
struct [[gnu::packed]] EntryPoint32bit {
|
|
char sig[4];
|
|
u8 checksum;
|
|
u8 length;
|
|
u8 major_version;
|
|
u8 minor_version;
|
|
u16 maximum_structure_size;
|
|
u8 implementation_revision;
|
|
char formatted_area[5];
|
|
LegacyEntryPoint32bit legacy_structure;
|
|
};
|
|
|
|
struct [[gnu::packed]] EntryPoint64bit {
|
|
char sig[5];
|
|
u8 checksum;
|
|
u8 length;
|
|
u8 major_version;
|
|
u8 minor_version;
|
|
u8 document_revision;
|
|
u8 revision;
|
|
u8 reserved;
|
|
u32 table_maximum_size;
|
|
u64 table_ptr;
|
|
};
|
|
}
|
|
|
|
namespace Kernel {
|
|
|
|
Memory::MappedROM map_bios();
|
|
Memory::MappedROM map_ebda();
|
|
|
|
class BIOSSysFSComponent : public SysFSComponent {
|
|
public:
|
|
virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
|
|
|
|
protected:
|
|
virtual ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const = 0;
|
|
explicit BIOSSysFSComponent(StringView name);
|
|
};
|
|
|
|
class DMIEntryPointExposedBlob : public BIOSSysFSComponent {
|
|
public:
|
|
static NonnullRefPtr<DMIEntryPointExposedBlob> create(PhysicalAddress dmi_entry_point, size_t blob_size);
|
|
|
|
private:
|
|
DMIEntryPointExposedBlob(PhysicalAddress dmi_entry_point, size_t blob_size);
|
|
virtual ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const override;
|
|
PhysicalAddress m_dmi_entry_point;
|
|
size_t m_dmi_entry_point_length;
|
|
};
|
|
|
|
class SMBIOSExposedTable : public BIOSSysFSComponent {
|
|
public:
|
|
static NonnullRefPtr<SMBIOSExposedTable> create(PhysicalAddress, size_t blob_size);
|
|
|
|
private:
|
|
SMBIOSExposedTable(PhysicalAddress dmi_entry_point, size_t blob_size);
|
|
virtual ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const override;
|
|
|
|
PhysicalAddress m_smbios_structure_table;
|
|
size_t m_smbios_structure_table_length;
|
|
};
|
|
|
|
class BIOSSysFSDirectory : public SysFSDirectory {
|
|
public:
|
|
static ErrorOr<NonnullRefPtr<BIOSSysFSDirectory>> try_create(FirmwareSysFSDirectory&);
|
|
|
|
void create_components();
|
|
|
|
private:
|
|
explicit BIOSSysFSDirectory(FirmwareSysFSDirectory&);
|
|
|
|
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 };
|
|
};
|
|
|
|
}
|