mirror of
https://github.com/RGBCube/serenity
synced 2025-07-27 15:37:46 +00:00
Kernel: Move all boot-related code to the new Boot subdirectory
This commit is contained in:
Liav A
Jelle Raaijmakers
parent
c9a34cae66
commit
8f21420a1d
31 changed files with 34 additions and 34 deletions
43
Kernel/Boot/BootInfo.h
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43
Kernel/Boot/BootInfo.h
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@ -0,0 +1,43 @@
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/*
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* Copyright (c) 2021, Gunnar Beutner <gbeutner@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/StringView.h>
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#include <Kernel/Boot/Multiboot.h>
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#include <Kernel/Memory/PhysicalAddress.h>
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#include <Kernel/Memory/VirtualAddress.h>
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namespace Kernel::Memory {
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class PageTableEntry;
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}
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extern "C" PhysicalAddress start_of_prekernel_image;
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extern "C" PhysicalAddress end_of_prekernel_image;
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extern "C" size_t physical_to_virtual_offset;
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extern "C" FlatPtr kernel_mapping_base;
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extern "C" FlatPtr kernel_load_base;
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#if ARCH(X86_64)
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extern "C" u32 gdt64ptr;
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extern "C" u16 code64_sel;
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#endif
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extern "C" PhysicalAddress boot_pml4t;
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extern "C" PhysicalAddress boot_pdpt;
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extern "C" PhysicalAddress boot_pd0;
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extern "C" PhysicalAddress boot_pd_kernel;
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extern "C" Kernel::Memory::PageTableEntry* boot_pd_kernel_pt1023;
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extern "C" StringView kernel_cmdline;
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extern "C" u32 multiboot_flags;
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extern "C" multiboot_memory_map_t* multiboot_memory_map;
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extern "C" size_t multiboot_memory_map_count;
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extern "C" multiboot_module_entry_t* multiboot_modules;
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extern "C" size_t multiboot_modules_count;
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extern "C" PhysicalAddress multiboot_framebuffer_addr;
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extern "C" u32 multiboot_framebuffer_pitch;
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extern "C" u32 multiboot_framebuffer_width;
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extern "C" u32 multiboot_framebuffer_height;
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extern "C" u8 multiboot_framebuffer_bpp;
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extern "C" u8 multiboot_framebuffer_type;
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320
Kernel/Boot/CommandLine.cpp
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320
Kernel/Boot/CommandLine.cpp
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@ -0,0 +1,320 @@
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/*
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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/Boot/CommandLine.h>
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#include <Kernel/Library/Panic.h>
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#include <Kernel/Library/StdLib.h>
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#include <Kernel/Sections.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(StringView cmd_line)
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{
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(void)cmd_line.copy_characters_to_buffer(s_cmd_line, sizeof(s_cmd_line));
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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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// Some boot loaders may include complex key-value pairs where the value is a composite entry,
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// we handle this by only checking for the first equals sign in each command line parameter.
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auto key = str.find_first_split_view('=');
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if (key.length() == str.length())
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m_params.set(key, ""sv);
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else
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m_params.set(key, str.substring_view(key.length() + 1));
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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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Vector<NonnullOwnPtr<KString>> CommandLine::userspace_init_args() const
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{
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Vector<NonnullOwnPtr<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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116
Kernel/Boot/CommandLine.h
Normal file
116
Kernel/Boot/CommandLine.h
Normal file
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@ -0,0 +1,116 @@
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/*
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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/Optional.h>
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#include <AK/Vector.h>
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#include <Kernel/Library/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 I8042PresenceMode {
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Automatic,
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AggressiveTest,
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Force,
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None,
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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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None,
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#if ARCH(X86_64)
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IOAddressing,
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#endif
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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(StringView cmd_line);
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static void initialize();
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static bool was_initialized();
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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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enum class GraphicsSubsystemMode {
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Enabled,
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Limited,
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Disabled
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};
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[[nodiscard]] StringView string() const { return m_string->view(); }
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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_pci_disabled() const;
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[[nodiscard]] bool is_legacy_time_enabled() const;
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[[nodiscard]] bool is_pc_speaker_enabled() const;
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[[nodiscard]] GraphicsSubsystemMode graphics_subsystem_mode() const;
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[[nodiscard]] I8042PresenceMode i8042_presence_mode() 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_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]] bool is_early_boot_console_disabled() const;
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[[nodiscard]] AHCIResetMode ahci_reset_mode() const;
|
||||
[[nodiscard]] StringView userspace_init() const;
|
||||
[[nodiscard]] Vector<NonnullOwnPtr<KString>> userspace_init_args() const;
|
||||
[[nodiscard]] StringView root_device() const;
|
||||
[[nodiscard]] bool is_nvme_polling_enabled() const;
|
||||
[[nodiscard]] size_t switch_to_tty() const;
|
||||
|
||||
private:
|
||||
CommandLine(StringView);
|
||||
|
||||
void add_arguments(Vector<StringView> const& args);
|
||||
static NonnullOwnPtr<KString> build_commandline(StringView cmdline_from_bootloader);
|
||||
|
||||
NonnullOwnPtr<KString> m_string;
|
||||
HashMap<StringView, StringView> m_params;
|
||||
};
|
||||
|
||||
CommandLine const& kernel_command_line();
|
||||
|
||||
}
|
||||
130
Kernel/Boot/Multiboot.h
Normal file
130
Kernel/Boot/Multiboot.h
Normal file
|
|
@ -0,0 +1,130 @@
|
|||
/*
|
||||
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/Types.h>
|
||||
|
||||
struct multiboot_module_entry {
|
||||
u32 start;
|
||||
u32 end;
|
||||
u32 string_addr;
|
||||
u32 reserved;
|
||||
};
|
||||
typedef struct multiboot_module_entry multiboot_module_entry_t;
|
||||
|
||||
struct multiboot_aout_symbol_table {
|
||||
u32 tabsize;
|
||||
u32 strsize;
|
||||
u32 addr;
|
||||
u32 reserved;
|
||||
};
|
||||
typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t;
|
||||
|
||||
struct multiboot_elf_section_header_table {
|
||||
u32 num;
|
||||
u32 size;
|
||||
u32 addr;
|
||||
u32 shndx;
|
||||
};
|
||||
typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t;
|
||||
|
||||
#define MULTIBOOT_MEMORY_AVAILABLE 1
|
||||
#define MULTIBOOT_MEMORY_RESERVED 2
|
||||
#define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE 3
|
||||
#define MULTIBOOT_MEMORY_NVS 4
|
||||
#define MULTIBOOT_MEMORY_BADRAM 5
|
||||
|
||||
struct multiboot_mmap_entry {
|
||||
u32 size;
|
||||
u64 addr;
|
||||
u64 len;
|
||||
u32 type;
|
||||
#if ARCH(AARCH64)
|
||||
// __attribute__((packed)) causes alignment issues on aarch64
|
||||
};
|
||||
#else
|
||||
} __attribute__((packed));
|
||||
#endif
|
||||
typedef struct multiboot_mmap_entry multiboot_memory_map_t;
|
||||
|
||||
#define MULTIBOOT_INFO_FRAMEBUFFER_INFO (1 << 12)
|
||||
|
||||
struct multiboot_info {
|
||||
// Multiboot info version number.
|
||||
u32 flags;
|
||||
|
||||
// Available memory from BIOS.
|
||||
u32 mem_lower;
|
||||
u32 mem_upper;
|
||||
|
||||
// "root" partition.
|
||||
u32 boot_device;
|
||||
|
||||
// Kernel command line.
|
||||
u32 cmdline;
|
||||
|
||||
// Boot-Module list.
|
||||
u32 mods_count;
|
||||
u32 mods_addr;
|
||||
|
||||
union {
|
||||
multiboot_aout_symbol_table_t aout_sym;
|
||||
multiboot_elf_section_header_table_t elf_sec;
|
||||
} u;
|
||||
|
||||
// Memory Mapping buffer.
|
||||
u32 mmap_length;
|
||||
u32 mmap_addr;
|
||||
|
||||
// Drive Info buffer.
|
||||
u32 drives_length;
|
||||
u32 drives_addr;
|
||||
|
||||
// ROM configuration table.
|
||||
u32 config_table;
|
||||
|
||||
// Boot Loader Name.
|
||||
u32 boot_loader_name;
|
||||
|
||||
// APM table.
|
||||
u32 apm_table;
|
||||
|
||||
// Video.
|
||||
u32 vbe_control_info;
|
||||
u32 vbe_mode_info;
|
||||
u16 vbe_mode;
|
||||
u16 vbe_interface_seg;
|
||||
u16 vbe_interface_off;
|
||||
u16 vbe_interface_len;
|
||||
|
||||
u64 framebuffer_addr;
|
||||
u32 framebuffer_pitch;
|
||||
u32 framebuffer_width;
|
||||
u32 framebuffer_height;
|
||||
u8 framebuffer_bpp;
|
||||
#define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED 0
|
||||
#define MULTIBOOT_FRAMEBUFFER_TYPE_RGB 1
|
||||
#define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT 2
|
||||
u8 framebuffer_type;
|
||||
union {
|
||||
struct
|
||||
{
|
||||
u32 framebuffer_palette_addr;
|
||||
u16 framebuffer_palette_num_colors;
|
||||
};
|
||||
struct
|
||||
{
|
||||
u8 framebuffer_red_field_position;
|
||||
u8 framebuffer_red_mask_size;
|
||||
u8 framebuffer_green_field_position;
|
||||
u8 framebuffer_green_mask_size;
|
||||
u8 framebuffer_blue_field_position;
|
||||
u8 framebuffer_blue_mask_size;
|
||||
};
|
||||
};
|
||||
};
|
||||
typedef struct multiboot_info multiboot_info_t;
|
||||
Loading…
Add table
Add a link
Reference in a new issue