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ladybird/Kernel/ACPI/Initialize.cpp

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Kernel: Move ACPI initialization from init.cpp to ACPI::initialize()
2020-04-09 13:39:10 +02:00
/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* 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.
*/
Kernel: Remove redundant "ACPI" from filenames in ACPI/
2020-04-09 18:17:27 +02:00
#include <Kernel/ACPI/DynamicParser.h>
Kernel: Move ACPI initialization from init.cpp to ACPI::initialize()
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#include <Kernel/CommandLine.h>
namespace Kernel {
namespace ACPI {
Kernel: Slap UNMAP_AFTER_INIT on a bunch more functions We're now able to unmap 100 KiB of kernel text after init. :^)
2021-02-19 21:29:46 +01:00
UNMAP_AFTER_INIT void initialize()
Kernel: Move ACPI initialization from init.cpp to ACPI::initialize()
2020-04-09 13:39:10 +02:00
{
Kernel: Move Kernel CommandLine parsing to strongly typed API. Previously all of the CommandLine parsing was spread out around the Kernel. Instead move it all into the Kernel CommandLine class, and expose a strongly typed API for querying the state of options.
2021-03-03 00:51:55 -08:00
auto feature_level = kernel_command_line().acpi_feature_level();
if (feature_level == AcpiFeatureLevel::Disabled)
Kernel: Remove "non-operational" ACPI parser state If we don't support ACPI, just don't instantiate an ACPI parser. This is way less confusing than having a special parser class whose only purpose is to do nothing. We now search for the RSDP in ACPI::initialize() instead of letting the parser constructor do it. This allows us to defer the decision to create a parser until we're sure we can make a useful one.
2020-04-09 14:31:47 +02:00
return;
Kernel: Add typed_map<T>(PhysicalAddress) and use it in ACPI parsing There was a frequently occurring pattern of "map this physical address into kernel VM, then read from it, then unmap it again". This new typed_map() encapsulates that logic by giving you back a typed pointer to the kind of structure you're interested in accessing. It returns a TypedMapping<T> that can be used mostly like a pointer. When destroyed, the TypedMapping object will unmap the memory. :^)
2020-04-09 17:12:58 +02:00
auto rsdp = StaticParsing::find_rsdp();
Kernel: Simplify scanning BIOS/EBDA and MP parser initialization Add a MappedROM::find_chunk_starting_with() helper since that's a very common usage pattern in clients of this code. Also convert MultiProcessorParser from a persistent singleton object to a temporary object constructed via a failable factory function.
2020-05-22 13:34:53 +02:00
if (!rsdp.has_value())
Kernel: Remove "non-operational" ACPI parser state If we don't support ACPI, just don't instantiate an ACPI parser. This is way less confusing than having a special parser class whose only purpose is to do nothing. We now search for the RSDP in ACPI::initialize() instead of letting the parser constructor do it. This allows us to defer the decision to create a parser until we're sure we can make a useful one.
2020-04-09 14:31:47 +02:00
return;
Kernel: Move Kernel CommandLine parsing to strongly typed API. Previously all of the CommandLine parsing was spread out around the Kernel. Instead move it all into the Kernel CommandLine class, and expose a strongly typed API for querying the state of options.
2021-03-03 00:51:55 -08:00
if (feature_level == AcpiFeatureLevel::Enabled)
Kernel: Simplify scanning BIOS/EBDA and MP parser initialization Add a MappedROM::find_chunk_starting_with() helper since that's a very common usage pattern in clients of this code. Also convert MultiProcessorParser from a persistent singleton object to a temporary object constructed via a failable factory function.
2020-05-22 13:34:53 +02:00
Parser::initialize<DynamicParser>(rsdp.value());
Kernel: Remove "non-operational" ACPI parser state If we don't support ACPI, just don't instantiate an ACPI parser. This is way less confusing than having a special parser class whose only purpose is to do nothing. We now search for the RSDP in ACPI::initialize() instead of letting the parser constructor do it. This allows us to defer the decision to create a parser until we're sure we can make a useful one.
2020-04-09 14:31:47 +02:00
else
Kernel: Simplify scanning BIOS/EBDA and MP parser initialization Add a MappedROM::find_chunk_starting_with() helper since that's a very common usage pattern in clients of this code. Also convert MultiProcessorParser from a persistent singleton object to a temporary object constructed via a failable factory function.
2020-05-22 13:34:53 +02:00
Parser::initialize<Parser>(rsdp.value());
Kernel: Remove "non-operational" ACPI parser state If we don't support ACPI, just don't instantiate an ACPI parser. This is way less confusing than having a special parser class whose only purpose is to do nothing. We now search for the RSDP in ACPI::initialize() instead of letting the parser constructor do it. This allows us to defer the decision to create a parser until we're sure we can make a useful one.
2020-04-09 14:31:47 +02:00
}
bool is_enabled()
{
return Parser::the();
Kernel: Move ACPI initialization from init.cpp to ACPI::initialize()
2020-04-09 13:39:10 +02:00
}
}
}
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