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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include <ACPI/ACPIParser.h>
30#include <AK/OwnPtr.h>
31
32namespace Kernel {
33
34class ACPIStaticParser : ACPIParser {
35public:
36 static void initialize(PhysicalAddress rsdp);
37 static void initialize_without_rsdp();
38 static bool is_initialized();
39
40 virtual PhysicalAddress find_table(const char* sig) override;
41 virtual void do_acpi_reboot() override;
42 virtual void do_acpi_shutdown() override;
43 virtual bool is_operable() override { return m_operable; }
44
45protected:
46 ACPIStaticParser();
47 explicit ACPIStaticParser(PhysicalAddress);
48
49private:
50 void locate_static_data();
51 void locate_all_aml_tables();
52 void locate_main_system_description_table();
53 void initialize_main_system_description_table();
54 size_t get_table_size(PhysicalAddress);
55 u8 get_table_revision(PhysicalAddress);
56 void init_fadt();
57 PhysicalAddress search_rsdp_in_ebda(u16 ebda_segment);
58 PhysicalAddress search_rsdp_in_bios_area();
59 PhysicalAddress search_rsdp();
60
61 PhysicalAddress m_rsdp;
62 PhysicalAddress m_main_system_description_table;
63
64 OwnPtr<ACPI::MainSystemDescriptionTable> m_main_sdt;
65 OwnPtr<ACPI::FixedACPIData> m_fadt;
66
67 Vector<ACPI_RAW::SDTHeader*> m_aml_tables_ptrs;
68 bool m_xsdt_supported;
69};
70
71}