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Kernel: Clean up and reorganize init.cpp
This is where we first enter into the kernel, so we should make at least some effort to keep things nice and understandable.
This commit is contained in:
Andreas Kling
parent
6fea316611
commit
17d4e74518
Notes:
sideshowbarker
2024-07-19 09:59:13 +09:00
Author: https://github.com/awesomekling Commit: https://github.com/SerenityOS/serenity/commit/17d4e745185
310
Kernel/init.cpp
310
Kernel/init.cpp
@ -72,27 +72,147 @@
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#include <Kernel/TTY/VirtualConsole.h>
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#include <Kernel/VM/MemoryManager.h>
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VirtualConsole* tty0;
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VirtualConsole* tty1;
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KeyboardDevice* keyboard;
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PS2MouseDevice* ps2mouse;
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SB16* sb16;
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DebugLogDevice* dev_debuglog;
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NullDevice* dev_null;
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SerialDevice* ttyS0;
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SerialDevice* ttyS1;
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SerialDevice* ttyS2;
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SerialDevice* ttyS3;
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VFS* vfs;
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[[noreturn]] static void init_stage2();
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static void setup_serial_debug();
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static void setup_acpi();
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[[noreturn]] static void init_stage2()
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VirtualConsole* tty0;
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// Defined in the linker script
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typedef void (*ctor_func_t)();
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extern ctor_func_t start_ctors;
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extern ctor_func_t end_ctors;
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extern u32 __stack_chk_guard;
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u32 __stack_chk_guard;
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extern "C" [[noreturn]] void init()
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{
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setup_serial_debug();
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cpu_setup();
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kmalloc_init();
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slab_alloc_init();
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new KParams(String(reinterpret_cast<const char*>(low_physical_to_virtual(multiboot_info_ptr->cmdline))));
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MemoryManager::initialize();
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bool text_debug = KParams::the().has("text_debug");
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setup_acpi();
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new VFS;
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new DebugLogDevice;
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new Console;
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kprintf("Starting SerenityOS...\n");
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__stack_chk_guard = get_good_random<u32>();
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RTC::initialize();
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PIC::initialize();
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gdt_init();
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idt_init();
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// call global constructors after gtd and itd init
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for (ctor_func_t* ctor = &start_ctors; ctor < &end_ctors; ctor++)
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(*ctor)();
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new KeyboardDevice;
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new PS2MouseDevice;
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new SB16;
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new NullDevice;
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if (!get_serial_debug())
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new SerialDevice(SERIAL_COM1_ADDR, 64);
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new SerialDevice(SERIAL_COM2_ADDR, 65);
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new SerialDevice(SERIAL_COM3_ADDR, 66);
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new SerialDevice(SERIAL_COM4_ADDR, 67);
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VirtualConsole::initialize();
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tty0 = new VirtualConsole(0, VirtualConsole::AdoptCurrentVGABuffer);
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new VirtualConsole(1);
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VirtualConsole::switch_to(0);
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// Sample test to see if the ACPI parser is working...
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kprintf("ACPI: HPET table @ P 0x%x\n", ACPIParser::the().find_table("HPET"));
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PCI::Initializer::the().test_and_initialize(KParams::the().has("nopci_mmio"));
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PCI::Initializer::the().dismiss();
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if (APIC::init())
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APIC::enable(0);
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PIT::initialize();
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PCI::enumerate_all([](const PCI::Address& address, PCI::ID id) {
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kprintf("PCI: device @ %w:%b:%b.%d [%w:%w]\n",
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address.seg(),
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address.bus(),
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address.slot(),
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address.function(),
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id.vendor_id,
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id.device_id);
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});
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if (text_debug) {
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dbgprintf("Text mode enabled\n");
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} else {
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if (multiboot_info_ptr->framebuffer_type == 1 || multiboot_info_ptr->framebuffer_type == 2) {
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new MBVGADevice(
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PhysicalAddress((u32)(multiboot_info_ptr->framebuffer_addr)),
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multiboot_info_ptr->framebuffer_pitch,
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multiboot_info_ptr->framebuffer_width,
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multiboot_info_ptr->framebuffer_height);
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} else {
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new BXVGADevice;
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}
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}
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LoopbackAdapter::the();
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auto e1000 = E1000NetworkAdapter::autodetect();
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auto rtl8139 = RTL8139NetworkAdapter::autodetect();
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Process::initialize();
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Thread::initialize();
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Thread* init_stage2_thread = nullptr;
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Process::create_kernel_process(init_stage2_thread, "init_stage2", init_stage2);
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Thread* syncd_thread = nullptr;
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Process::create_kernel_process(syncd_thread, "syncd", [] {
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for (;;) {
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VFS::the().sync();
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current->sleep(1 * TICKS_PER_SECOND);
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}
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});
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Process::create_kernel_process(g_finalizer, "Finalizer", [] {
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current->set_priority(THREAD_PRIORITY_LOW);
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for (;;) {
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current->wait_on(*g_finalizer_wait_queue);
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Thread::finalize_dying_threads();
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}
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});
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Scheduler::pick_next();
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sti();
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Scheduler::idle_loop();
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ASSERT_NOT_REACHED();
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}
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void init_stage2()
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{
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Syscall::initialize();
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auto dev_zero = make<ZeroDevice>();
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auto dev_full = make<FullDevice>();
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auto dev_random = make<RandomDevice>();
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auto dev_ptmx = make<PTYMultiplexer>();
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new ZeroDevice;
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new FullDevice;
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new RandomDevice;
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new PTYMultiplexer;
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bool text_debug = KParams::the().has("text_debug");
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bool force_pio = KParams::the().has("force_pio");
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@ -170,12 +290,12 @@ VFS* vfs;
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hang();
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}
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if (!vfs->mount_root(e2fs)) {
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if (!VFS::the().mount_root(e2fs)) {
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kprintf("VFS::mount_root failed\n");
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hang();
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}
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current->process().set_root_directory(vfs->root_custody());
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current->process().set_root_directory(VFS::the().root_custody());
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dbgprintf("Load ksyms\n");
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load_ksyms();
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@ -232,30 +352,7 @@ VFS* vfs;
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ASSERT_NOT_REACHED();
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}
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extern "C" {
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multiboot_info_t* multiboot_info_ptr;
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}
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typedef void (*ctor_func_t)();
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// Defined in the linker script
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extern ctor_func_t start_ctors;
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extern ctor_func_t end_ctors;
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// Define some Itanium C++ ABI methods to stop the linker from complaining
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// If we actually call these something has gone horribly wrong
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void* __dso_handle __attribute__((visibility("hidden")));
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extern "C" int __cxa_atexit(void (*)(void*), void*, void*)
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{
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ASSERT_NOT_REACHED();
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return 0;
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}
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extern u32 __stack_chk_guard;
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u32 __stack_chk_guard;
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extern "C" [[noreturn]] void init()
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void setup_serial_debug()
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{
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// this is only used one time, directly below here. we can't use this part
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// of libc at this point in the boot process, or we'd just pull strstr in
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@ -276,22 +373,26 @@ extern "C" [[noreturn]] void init()
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u32 cmdline = low_physical_to_virtual(multiboot_info_ptr->cmdline);
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if (cmdline && bad_prefix_check(reinterpret_cast<const char*>(cmdline), "serial_debug"))
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set_serial_debug(true);
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}
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cpu_setup();
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extern "C" {
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multiboot_info_t* multiboot_info_ptr;
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}
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kmalloc_init();
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slab_alloc_init();
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// Define some Itanium C++ ABI methods to stop the linker from complaining
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// If we actually call these something has gone horribly wrong
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void* __dso_handle __attribute__((visibility("hidden")));
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// must come after kmalloc_init because we use AK_MAKE_ETERNAL in KParams
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new KParams(String(reinterpret_cast<const char*>(cmdline)));
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extern "C" int __cxa_atexit(void (*)(void*), void*, void*)
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{
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ASSERT_NOT_REACHED();
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return 0;
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}
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bool text_debug = KParams::the().has("text_debug");
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void setup_acpi()
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{
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bool complete_acpi_disable = KParams::the().has("noacpi");
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bool dynamic_acpi_disable = KParams::the().has("noacpi_aml");
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bool pci_mmio_disable = KParams::the().has("nopci_mmio");
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MemoryManager::initialize();
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if (complete_acpi_disable) {
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ACPIParser::initialize_limited();
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} else {
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@ -301,107 +402,4 @@ extern "C" [[noreturn]] void init()
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ACPIStaticParser::initialize_without_rsdp();
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}
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}
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vfs = new VFS;
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dev_debuglog = new DebugLogDevice;
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auto console = make<Console>();
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kprintf("Starting SerenityOS...\n");
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__stack_chk_guard = get_good_random<u32>();
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RTC::initialize();
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PIC::initialize();
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gdt_init();
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idt_init();
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// call global constructors after gtd and itd init
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for (ctor_func_t* ctor = &start_ctors; ctor < &end_ctors; ctor++)
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(*ctor)();
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keyboard = new KeyboardDevice;
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ps2mouse = new PS2MouseDevice;
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sb16 = new SB16;
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dev_null = new NullDevice;
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if (!get_serial_debug())
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ttyS0 = new SerialDevice(SERIAL_COM1_ADDR, 64);
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ttyS1 = new SerialDevice(SERIAL_COM2_ADDR, 65);
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ttyS2 = new SerialDevice(SERIAL_COM3_ADDR, 66);
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ttyS3 = new SerialDevice(SERIAL_COM4_ADDR, 67);
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VirtualConsole::initialize();
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tty0 = new VirtualConsole(0, VirtualConsole::AdoptCurrentVGABuffer);
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tty1 = new VirtualConsole(1);
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VirtualConsole::switch_to(0);
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// Sample test to see if the ACPI parser is working...
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kprintf("ACPI: HPET table @ P 0x%x\n", ACPIParser::the().find_table("HPET"));
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PCI::Initializer::the().test_and_initialize(pci_mmio_disable);
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PCI::Initializer::the().dismiss();
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if (APIC::init())
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APIC::enable(0);
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PIT::initialize();
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PCI::enumerate_all([](const PCI::Address& address, PCI::ID id) {
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kprintf("PCI: device @ %w:%b:%b.%d [%w:%w]\n",
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address.seg(),
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address.bus(),
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address.slot(),
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address.function(),
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id.vendor_id,
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id.device_id);
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});
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if (text_debug) {
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dbgprintf("Text mode enabled\n");
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} else {
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if (multiboot_info_ptr->framebuffer_type == 1 || multiboot_info_ptr->framebuffer_type == 2) {
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new MBVGADevice(
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PhysicalAddress((u32)(multiboot_info_ptr->framebuffer_addr)),
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multiboot_info_ptr->framebuffer_pitch,
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multiboot_info_ptr->framebuffer_width,
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multiboot_info_ptr->framebuffer_height);
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} else {
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new BXVGADevice;
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}
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}
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LoopbackAdapter::the();
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auto e1000 = E1000NetworkAdapter::autodetect();
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auto rtl8139 = RTL8139NetworkAdapter::autodetect();
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Process::initialize();
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Thread::initialize();
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Thread* init_stage2_thread = nullptr;
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Process::create_kernel_process(init_stage2_thread, "init_stage2", init_stage2);
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Thread* syncd_thread = nullptr;
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Process::create_kernel_process(syncd_thread, "syncd", [] {
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for (;;) {
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VFS::the().sync();
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current->sleep(1 * TICKS_PER_SECOND);
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}
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});
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Process::create_kernel_process(g_finalizer, "Finalizer", [] {
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current->set_priority(THREAD_PRIORITY_LOW);
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for (;;) {
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current->wait_on(*g_finalizer_wait_queue);
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Thread::finalize_dying_threads();
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}
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});
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Scheduler::pick_next();
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sti();
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Scheduler::idle_loop();
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ASSERT_NOT_REACHED();
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}
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