Kernel: Move ACPI initialization from init.cpp to ACPI::initialize()

1 files changed, 66 insertions, 0 deletions

diff --git a/Kernel/ACPI/Initialize.cpp b/Kernel/ACPI/Initialize.cpp
new file mode 100644
index 0000000000..76a93d707e
--- /dev/null
+++ b/Kernel/ACPI/Initialize.cpp
@@ -0,0 +1,66 @@
+/*
+ * 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.
+ */
+
+#include <Kernel/ACPI/ACPIDynamicParser.h>
+#include <Kernel/CommandLine.h>
+
+namespace Kernel {
+namespace ACPI {
+
+enum class FeatureLevel {
+    Enabled,
+    Limited,
+    Disabled,
+};
+
+static FeatureLevel determine_feature_level()
+{
+    auto value = kernel_command_line().lookup("acpi").value_or("on");
+    if (value == "limited")
+        return FeatureLevel::Limited;
+    if (value == "off")
+        return FeatureLevel::Disabled;
+    return FeatureLevel::Enabled;
+}
+
+void initialize()
+{
+    switch (determine_feature_level()) {
+    case FeatureLevel::Enabled:
+        ACPI::DynamicParser::initialize_without_rsdp();
+        break;
+    case FeatureLevel::Limited:
+        ACPI::StaticParser::initialize_without_rsdp();
+        break;
+    case FeatureLevel::Disabled:
+        ACPI::Parser::initialize_limited();
+        break;
+    }
+}
+
+}
+}