mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-13 11:42:38 +03:00
108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/SinglyLinkedList.h>
|
|
#include <AK/Types.h>
|
|
#include <AK/Vector.h>
|
|
#include <Kernel/KBuffer.h>
|
|
#include <Kernel/PhysicalAddress.h>
|
|
#include <Kernel/VM/Region.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 {
|
|
|
|
class DMIExpose {
|
|
|
|
public:
|
|
static void initialize();
|
|
|
|
DMIExpose();
|
|
|
|
static DMIExpose& the();
|
|
|
|
bool is_available() const { return m_available; }
|
|
OwnPtr<KBuffer> entry_point() const;
|
|
OwnPtr<KBuffer> structure_table() const;
|
|
size_t entry_point_length() const;
|
|
size_t structure_table_length() const;
|
|
|
|
private:
|
|
void set_64_bit_entry_initialization_values();
|
|
void set_32_bit_entry_initialization_values();
|
|
void initialize_exposer();
|
|
|
|
Optional<PhysicalAddress> find_entry64bit_point();
|
|
Optional<PhysicalAddress> find_entry32bit_point();
|
|
|
|
PhysicalAddress m_entry_point;
|
|
PhysicalAddress m_structure_table;
|
|
bool m_using_64bit_entry_point { false };
|
|
bool m_available { false };
|
|
size_t m_structure_table_length { 0 };
|
|
size_t m_entry_point_length { 0 };
|
|
};
|
|
|
|
}
|