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https://github.com/LadybirdBrowser/ladybird.git
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The setting of scan code set sequence is removed, as it's buggy and could lead the controller to fail immediately when doing self-test afterwards. We will restore it when we understand how to do so safely. Allow the user to determine a preferred detection path with a new kernel command line argument. The defualt option is to check i8042 presence with an ACPI check and if necessary - an "aggressive" test to determine i8042 existence in the system. Also, keep the i8042 controller pointer on the stack, so don't assign m_i8042_controller member pointer if it does not exist.
329 lines
9.0 KiB
C++
329 lines
9.0 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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#include <AK/StringBuilder.h>
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#include <Kernel/CommandLine.h>
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#include <Kernel/Panic.h>
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#include <Kernel/Sections.h>
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#include <Kernel/StdLib.h>
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namespace Kernel {
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static char s_cmd_line[1024];
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static constexpr StringView s_embedded_cmd_line = ""sv;
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static CommandLine* s_the;
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UNMAP_AFTER_INIT void CommandLine::early_initialize(char const* cmd_line)
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{
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if (!cmd_line)
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return;
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size_t length = strlen(cmd_line);
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if (length >= sizeof(s_cmd_line))
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length = sizeof(s_cmd_line) - 1;
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memcpy(s_cmd_line, cmd_line, length);
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s_cmd_line[length] = '\0';
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}
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bool CommandLine::was_initialized()
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{
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return s_the != nullptr;
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}
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CommandLine const& kernel_command_line()
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{
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VERIFY(s_the);
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return *s_the;
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}
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UNMAP_AFTER_INIT void CommandLine::initialize()
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{
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VERIFY(!s_the);
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s_the = new CommandLine({ s_cmd_line, strlen(s_cmd_line) });
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dmesgln("Kernel Commandline: {}", kernel_command_line().string());
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// Validate the modes the user passed in.
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(void)s_the->panic_mode(Validate::Yes);
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}
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UNMAP_AFTER_INIT NonnullOwnPtr<KString> CommandLine::build_commandline(StringView cmdline_from_bootloader)
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{
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StringBuilder builder;
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builder.append(cmdline_from_bootloader);
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if constexpr (!s_embedded_cmd_line.is_empty()) {
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builder.append(' ');
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builder.append(s_embedded_cmd_line);
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}
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return KString::must_create(builder.string_view());
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}
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UNMAP_AFTER_INIT void CommandLine::add_arguments(Vector<StringView> const& args)
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{
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for (auto&& str : args) {
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if (str == ""sv) {
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continue;
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}
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auto pair = str.split_view('=');
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VERIFY(pair.size() == 2 || pair.size() == 1);
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if (pair.size() == 1) {
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m_params.set(pair[0], ""sv);
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} else {
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m_params.set(pair[0], pair[1]);
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}
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}
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}
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UNMAP_AFTER_INIT CommandLine::CommandLine(StringView cmdline_from_bootloader)
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: m_string(build_commandline(cmdline_from_bootloader))
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{
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s_the = this;
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auto const& args = m_string->view().split_view(' ');
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MUST(m_params.try_ensure_capacity(args.size()));
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add_arguments(args);
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}
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Optional<StringView> CommandLine::lookup(StringView key) const
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{
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return m_params.get(key);
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}
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bool CommandLine::contains(StringView key) const
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{
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return m_params.contains(key);
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}
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UNMAP_AFTER_INIT bool CommandLine::is_boot_profiling_enabled() const
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{
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return contains("boot_prof"sv);
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}
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UNMAP_AFTER_INIT bool CommandLine::is_ide_enabled() const
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{
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return !contains("disable_ide"sv);
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}
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UNMAP_AFTER_INIT bool CommandLine::is_smp_enabled() const
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{
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// Note: We can't enable SMP mode without enabling the IOAPIC.
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if (!is_ioapic_enabled())
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return false;
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return lookup("smp"sv).value_or("off"sv) == "on"sv;
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}
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UNMAP_AFTER_INIT bool CommandLine::is_smp_enabled_without_ioapic_enabled() const
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{
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auto smp_enabled = lookup("smp"sv).value_or("off"sv) == "on"sv;
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return smp_enabled && !is_ioapic_enabled();
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}
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UNMAP_AFTER_INIT bool CommandLine::is_ioapic_enabled() const
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{
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auto value = lookup("enable_ioapic"sv).value_or("on"sv);
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if (value == "on"sv)
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return true;
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if (value == "off"sv)
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return false;
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PANIC("Unknown enable_ioapic setting: {}", value);
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}
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UNMAP_AFTER_INIT bool CommandLine::is_early_boot_console_disabled() const
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{
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auto value = lookup("early_boot_console"sv).value_or("on"sv);
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if (value == "on"sv)
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return false;
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if (value == "off"sv)
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return true;
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PANIC("Unknown early_boot_console setting: {}", value);
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}
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UNMAP_AFTER_INIT I8042PresenceMode CommandLine::i8042_presence_mode() const
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{
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auto value = lookup("i8042_presence_mode"sv).value_or("auto"sv);
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if (value == "auto"sv)
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return I8042PresenceMode::Automatic;
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if (value == "none"sv)
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return I8042PresenceMode::None;
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if (value == "force"sv)
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return I8042PresenceMode::Force;
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if (value == "aggressive-test"sv)
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return I8042PresenceMode::AggressiveTest;
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PANIC("Unknown i8042_presence_mode setting: {}", value);
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}
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UNMAP_AFTER_INIT bool CommandLine::is_vmmouse_enabled() const
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{
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return lookup("vmmouse"sv).value_or("on"sv) == "on"sv;
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}
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UNMAP_AFTER_INIT PCIAccessLevel CommandLine::pci_access_level() const
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{
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auto value = lookup("pci"sv).value_or("ecam"sv);
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if (value == "ecam"sv)
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return PCIAccessLevel::MemoryAddressing;
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#if ARCH(X86_64)
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if (value == "io"sv)
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return PCIAccessLevel::IOAddressing;
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#endif
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if (value == "none"sv)
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return PCIAccessLevel::None;
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PANIC("Unknown PCI ECAM setting: {}", value);
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}
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UNMAP_AFTER_INIT bool CommandLine::is_pci_disabled() const
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{
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return lookup("pci"sv).value_or("ecam"sv) == "none"sv;
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}
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UNMAP_AFTER_INIT bool CommandLine::is_legacy_time_enabled() const
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{
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return lookup("time"sv).value_or("modern"sv) == "legacy"sv;
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}
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bool CommandLine::is_pc_speaker_enabled() const
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{
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auto value = lookup("pcspeaker"sv).value_or("off"sv);
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if (value == "on"sv)
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return true;
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if (value == "off"sv)
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return false;
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PANIC("Unknown pcspeaker setting: {}", value);
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}
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UNMAP_AFTER_INIT bool CommandLine::is_force_pio() const
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{
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return contains("force_pio"sv);
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}
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UNMAP_AFTER_INIT StringView CommandLine::root_device() const
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{
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return lookup("root"sv).value_or("lun0:0:0"sv);
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}
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bool CommandLine::is_nvme_polling_enabled() const
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{
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return contains("nvme_poll"sv);
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}
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UNMAP_AFTER_INIT AcpiFeatureLevel CommandLine::acpi_feature_level() const
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{
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auto value = kernel_command_line().lookup("acpi"sv).value_or("limited"sv);
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if (value == "limited"sv)
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return AcpiFeatureLevel::Limited;
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if (value == "off"sv)
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return AcpiFeatureLevel::Disabled;
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if (value == "on"sv)
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return AcpiFeatureLevel::Enabled;
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PANIC("Unknown ACPI feature level: {}", value);
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}
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UNMAP_AFTER_INIT HPETMode CommandLine::hpet_mode() const
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{
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auto hpet_mode = lookup("hpet"sv).value_or("periodic"sv);
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if (hpet_mode == "periodic"sv)
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return HPETMode::Periodic;
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if (hpet_mode == "nonperiodic"sv)
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return HPETMode::NonPeriodic;
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PANIC("Unknown HPETMode: {}", hpet_mode);
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}
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UNMAP_AFTER_INIT bool CommandLine::is_physical_networking_disabled() const
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{
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return contains("disable_physical_networking"sv);
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}
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UNMAP_AFTER_INIT bool CommandLine::disable_physical_storage() const
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{
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return contains("disable_physical_storage"sv);
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}
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UNMAP_AFTER_INIT bool CommandLine::disable_uhci_controller() const
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{
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return contains("disable_uhci_controller"sv);
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}
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UNMAP_AFTER_INIT bool CommandLine::disable_usb() const
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{
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return contains("disable_usb"sv);
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}
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UNMAP_AFTER_INIT bool CommandLine::disable_virtio() const
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{
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return contains("disable_virtio"sv);
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}
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UNMAP_AFTER_INIT AHCIResetMode CommandLine::ahci_reset_mode() const
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{
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auto const ahci_reset_mode = lookup("ahci_reset_mode"sv).value_or("controllers"sv);
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if (ahci_reset_mode == "controllers"sv) {
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return AHCIResetMode::ControllerOnly;
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}
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if (ahci_reset_mode == "aggressive"sv) {
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return AHCIResetMode::Aggressive;
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}
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PANIC("Unknown AHCIResetMode: {}", ahci_reset_mode);
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}
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StringView CommandLine::system_mode() const
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{
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return lookup("system_mode"sv).value_or("graphical"sv);
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}
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PanicMode CommandLine::panic_mode(Validate should_validate) const
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{
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auto const panic_mode = lookup("panic"sv).value_or("halt"sv);
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if (panic_mode == "halt"sv) {
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return PanicMode::Halt;
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}
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if (panic_mode == "shutdown"sv) {
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return PanicMode::Shutdown;
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}
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if (should_validate == Validate::Yes)
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PANIC("Unknown PanicMode: {}", panic_mode);
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return PanicMode::Halt;
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}
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UNMAP_AFTER_INIT CommandLine::GraphicsSubsystemMode CommandLine::graphics_subsystem_mode() const
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{
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auto const graphics_subsystem_mode_value = lookup("graphics_subsystem_mode"sv).value_or("on"sv);
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if (graphics_subsystem_mode_value == "on"sv)
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return GraphicsSubsystemMode::Enabled;
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if (graphics_subsystem_mode_value == "limited"sv)
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return GraphicsSubsystemMode::Limited;
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if (graphics_subsystem_mode_value == "off"sv)
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return GraphicsSubsystemMode::Disabled;
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PANIC("Invalid graphics_subsystem_mode value: {}", graphics_subsystem_mode_value);
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}
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StringView CommandLine::userspace_init() const
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{
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return lookup("init"sv).value_or("/bin/SystemServer"sv);
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}
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NonnullOwnPtrVector<KString> CommandLine::userspace_init_args() const
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{
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NonnullOwnPtrVector<KString> args;
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auto init_args = lookup("init_args"sv).value_or(""sv).split_view(';');
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if (!init_args.is_empty())
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MUST(args.try_prepend(MUST(KString::try_create(userspace_init()))));
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for (auto& init_arg : init_args)
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args.append(MUST(KString::try_create(init_arg)));
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return args;
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}
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UNMAP_AFTER_INIT size_t CommandLine::switch_to_tty() const
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{
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auto const default_tty = lookup("switch_to_tty"sv).value_or("1"sv);
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auto switch_tty_number = default_tty.to_uint();
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if (switch_tty_number.has_value() && switch_tty_number.value() >= 1) {
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return switch_tty_number.value() - 1;
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}
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PANIC("Invalid default tty value: {}", default_tty);
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}
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}
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