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Undefine
4ac5026d2c
This should hopefully get rid of a handful of release_value_but_fixme, while also making it more likely that we boot on systems where ACPI is doing something weird (cases we cannot handle yet). While this is unlikely to occur with our currect range of supported ACPI stuff, when we add AML interpreting it's quite likely that we will encounter a cursed DSDT at some point that should not crash the entire system without a meaningful error.
48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
/*
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* Copyright (c) 2020-2021, Liav A. <[email protected]>
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* Copyright (c) 2020, Andreas Kling <[email protected]>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Boot/BootInfo.h>
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#include <Kernel/Boot/CommandLine.h>
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#include <Kernel/Firmware/ACPI/Parser.h>
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#include <Kernel/Firmware/ACPI/StaticParsing.h>
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#include <Kernel/Memory/TypedMapping.h>
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#include <Kernel/Sections.h>
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namespace Kernel::ACPI {
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UNMAP_AFTER_INIT ErrorOr<void> initialize()
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{
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auto feature_level = kernel_command_line().acpi_feature_level();
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if (feature_level == AcpiFeatureLevel::Disabled)
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return {};
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auto rsdp = StaticParsing::find_rsdp();
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if (!rsdp.has_value())
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return ENOENT;
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auto facp = TRY(StaticParsing::find_table(rsdp.value(), "FACP"sv));
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if (!facp.has_value())
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return ENOENT;
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auto facp_table = TRY(Memory::map_typed<::ACPI::Structures::FADT>(facp.value()));
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InterruptNumber irq_line = facp_table->sci_int;
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TRY(Parser::initialize(rsdp.value(), facp.value(), irq_line));
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if (kernel_command_line().acpi_feature_level() == AcpiFeatureLevel::Enabled)
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Parser::the()->enable_aml_parsing();
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return {};
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}
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bool is_enabled()
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{
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return Parser::the();
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}
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}
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