mirror of
https://github.com/SerenityOS/serenity
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ac7ce12123
This was a premature optimization from the early days of SerenityOS. The eternal heap was a simple bump pointer allocator over a static byte array. My original idea was to avoid heap fragmentation and improve data locality, but both ideas were rooted in cargo culting, not data. We would reserve 4 MiB at boot and only ended up using ~256 KiB, wasting the rest. This patch replaces all kmalloc_eternal() usage by regular kmalloc().
98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/HashMap.h>
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#include <AK/NonnullOwnPtrVector.h>
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#include <AK/Optional.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <Kernel/KString.h>
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namespace Kernel {
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enum class PanicMode {
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Halt,
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Shutdown,
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};
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enum class HPETMode {
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Periodic,
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NonPeriodic
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};
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enum class AcpiFeatureLevel {
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Enabled,
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Limited,
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Disabled,
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};
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enum class PCIAccessLevel {
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IOAddressing,
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MemoryAddressing,
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};
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enum class AHCIResetMode {
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ControllerOnly,
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Aggressive,
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};
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class CommandLine {
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public:
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static void early_initialize(const char* cmd_line);
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static void initialize();
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enum class Validate {
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Yes,
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No,
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};
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[[nodiscard]] const String& string() const { return m_string; }
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Optional<StringView> lookup(StringView key) const;
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[[nodiscard]] bool contains(StringView key) const;
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[[nodiscard]] bool is_boot_profiling_enabled() const;
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[[nodiscard]] bool is_ide_enabled() const;
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[[nodiscard]] bool is_ioapic_enabled() const;
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[[nodiscard]] bool is_smp_enabled_without_ioapic_enabled() const;
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[[nodiscard]] bool is_smp_enabled() const;
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[[nodiscard]] bool is_physical_networking_disabled() const;
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[[nodiscard]] bool is_vmmouse_enabled() const;
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[[nodiscard]] PCIAccessLevel pci_access_level() const;
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[[nodiscard]] bool is_legacy_time_enabled() const;
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[[nodiscard]] bool are_framebuffer_devices_enabled() const;
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[[nodiscard]] bool is_force_pio() const;
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[[nodiscard]] AcpiFeatureLevel acpi_feature_level() const;
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[[nodiscard]] StringView system_mode() const;
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[[nodiscard]] PanicMode panic_mode(Validate should_validate = Validate::No) const;
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[[nodiscard]] HPETMode hpet_mode() const;
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[[nodiscard]] bool disable_physical_storage() const;
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[[nodiscard]] bool disable_ps2_controller() const;
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[[nodiscard]] bool disable_uhci_controller() const;
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[[nodiscard]] bool disable_usb() const;
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[[nodiscard]] bool disable_virtio() const;
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[[nodiscard]] AHCIResetMode ahci_reset_mode() const;
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[[nodiscard]] StringView userspace_init() const;
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[[nodiscard]] NonnullOwnPtrVector<KString> userspace_init_args() const;
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[[nodiscard]] StringView root_device() const;
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[[nodiscard]] size_t switch_to_tty() const;
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private:
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CommandLine(const String&);
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void add_arguments(const Vector<StringView>& args);
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void build_commandline(const String& cmdline_from_bootloader);
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String m_string;
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HashMap<StringView, StringView> m_params;
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};
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const CommandLine& kernel_command_line();
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}
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