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https://github.com/SerenityOS/serenity
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1682f0b760
SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
88 lines
1.9 KiB
C++
88 lines
1.9 KiB
C++
/*
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* Copyright (c) 2021, 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/SinglyLinkedList.h>
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#include <AK/Types.h>
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#include <AK/Vector.h>
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#include <Kernel/KBuffer.h>
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#include <Kernel/PhysicalAddress.h>
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#include <Kernel/VM/Region.h>
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#include <Kernel/VirtualAddress.h>
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namespace Kernel::SMBIOS {
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struct [[gnu::packed]] LegacyEntryPoint32bit {
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char legacy_sig[5];
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u8 checksum2;
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u16 smboios_table_length;
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u32 smbios_table_ptr;
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u16 smbios_tables_count;
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u8 smbios_bcd_revision;
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};
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struct [[gnu::packed]] EntryPoint32bit {
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char sig[4];
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u8 checksum;
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u8 length;
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u8 major_version;
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u8 minor_version;
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u16 maximum_structure_size;
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u8 implementation_revision;
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char formatted_area[5];
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LegacyEntryPoint32bit legacy_structure;
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};
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struct [[gnu::packed]] EntryPoint64bit {
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char sig[5];
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u8 checksum;
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u8 length;
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u8 major_version;
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u8 minor_version;
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u8 document_revision;
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u8 revision;
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u8 reserved;
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u32 table_maximum_size;
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u64 table_ptr;
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};
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}
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namespace Kernel {
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class DMIExpose {
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public:
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static void initialize();
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DMIExpose();
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static DMIExpose& the();
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bool is_available() const { return m_available; }
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OwnPtr<KBuffer> entry_point() const;
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OwnPtr<KBuffer> structure_table() const;
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size_t entry_point_length() const;
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size_t structure_table_length() const;
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private:
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void set_64_bit_entry_initialization_values();
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void set_32_bit_entry_initialization_values();
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void initialize_exposer();
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Optional<PhysicalAddress> find_entry64bit_point();
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Optional<PhysicalAddress> find_entry32bit_point();
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PhysicalAddress m_entry_point;
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PhysicalAddress m_structure_table;
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bool m_using_64bit_entry_point { false };
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bool m_available { false };
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size_t m_structure_table_length { 0 };
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size_t m_entry_point_length { 0 };
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};
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}
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