mirror of
https://github.com/SerenityOS/serenity
synced 2024-07-22 18:46:18 +00:00
428afca32b
Most of the ACPI static parsing methods (methods that can be called without initializing a full AML parser) are not tied to any specific platform or CPU architecture. The only method that is platform-specific is the one that finds the RSDP structure. Thus, each CPU architecture/platform needs to implement it. This means that now aarch64 can implement its own method to find the ACPI RSDP structure, which would be hooked into the rest of the ACPI code elegantly, but for now I just added a FIXME and that method returns empty value of Optional<PhysicalAddress>.
45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
/*
|
|
* Copyright (c) 2020-2021, Liav A. <liavalb@hotmail.co.il>
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/Boot/CommandLine.h>
|
|
#include <Kernel/Firmware/ACPI/Parser.h>
|
|
#include <Kernel/Firmware/ACPI/StaticParsing.h>
|
|
#include <Kernel/Memory/TypedMapping.h>
|
|
#include <Kernel/Sections.h>
|
|
|
|
namespace Kernel::ACPI {
|
|
|
|
UNMAP_AFTER_INIT void initialize()
|
|
{
|
|
auto feature_level = kernel_command_line().acpi_feature_level();
|
|
if (feature_level == AcpiFeatureLevel::Disabled)
|
|
return;
|
|
|
|
auto rsdp = MUST(StaticParsing::find_rsdp_in_platform_specific_memory_locations());
|
|
if (!rsdp.has_value())
|
|
return;
|
|
|
|
auto facp = MUST(StaticParsing::find_table(rsdp.value(), "FACP"sv));
|
|
if (!facp.has_value())
|
|
return;
|
|
auto facp_table_or_error = Memory::map_typed<Structures::FADT>(facp.value());
|
|
if (facp_table_or_error.is_error())
|
|
return;
|
|
u8 irq_line = facp_table_or_error.value()->sci_int;
|
|
|
|
Parser::must_initialize(rsdp.value(), facp.value(), irq_line);
|
|
if (kernel_command_line().acpi_feature_level() == AcpiFeatureLevel::Enabled)
|
|
Parser::the()->enable_aml_parsing();
|
|
}
|
|
|
|
bool is_enabled()
|
|
{
|
|
return Parser::the();
|
|
}
|
|
|
|
}
|