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- #include "KSyms.h"
- #include "Process.h"
- #include "RTC.h"
- #include "Scheduler.h"
- #include "i8253.h"
- #include "kmalloc.h"
- #include <AK/Types.h>
- #include <Kernel/Arch/i386/CPU.h>
- #include <Kernel/Arch/i386/PIC.h>
- #include <Kernel/Devices/BXVGADevice.h>
- #include <Kernel/Devices/DebugLogDevice.h>
- #include <Kernel/Devices/DiskPartition.h>
- #include <Kernel/Devices/FullDevice.h>
- #include <Kernel/Devices/IDEDiskDevice.h>
- #include <Kernel/Devices/KeyboardDevice.h>
- #include <Kernel/Devices/MBRPartitionTable.h>
- #include <Kernel/Devices/NullDevice.h>
- #include <Kernel/Devices/PS2MouseDevice.h>
- #include <Kernel/Devices/RandomDevice.h>
- #include <Kernel/Devices/SerialDevice.h>
- #include <Kernel/Devices/ZeroDevice.h>
- #include <Kernel/FileSystem/DevPtsFS.h>
- #include <Kernel/FileSystem/Ext2FileSystem.h>
- #include <Kernel/FileSystem/ProcFS.h>
- #include <Kernel/FileSystem/VirtualFileSystem.h>
- #include <Kernel/KParams.h>
- #include <Kernel/Multiboot.h>
- #include <Kernel/Net/E1000NetworkAdapter.h>
- #include <Kernel/Net/NetworkTask.h>
- #include <Kernel/TTY/PTYMultiplexer.h>
- #include <Kernel/TTY/VirtualConsole.h>
- #include <Kernel/VM/MemoryManager.h>
- //#define STRESS_TEST_SPAWNING
- VirtualConsole* tty0;
- VirtualConsole* tty1;
- VirtualConsole* tty2;
- VirtualConsole* tty3;
- KeyboardDevice* keyboard;
- PS2MouseDevice* ps2mouse;
- DebugLogDevice* dev_debuglog;
- NullDevice* dev_null;
- SerialDevice* ttyS0;
- SerialDevice* ttyS1;
- SerialDevice* ttyS2;
- SerialDevice* ttyS3;
- VFS* vfs;
- #ifdef STRESS_TEST_SPAWNING
- [[noreturn]] static void spawn_stress()
- {
- u32 last_sum_alloc = sum_alloc;
- for (unsigned i = 0; i < 10000; ++i) {
- int error;
- Process::create_user_process("/bin/true", (uid_t)100, (gid_t)100, (pid_t)0, error, {}, {}, tty0);
- dbgprintf("malloc stats: alloc:%u free:%u eternal:%u !delta:%u\n", sum_alloc, sum_free, kmalloc_sum_eternal, sum_alloc - last_sum_alloc);
- last_sum_alloc = sum_alloc;
- sleep(60);
- }
- for (;;) {
- asm volatile("hlt");
- }
- }
- #endif
- [[noreturn]] static void init_stage2()
- {
- Syscall::initialize();
- auto dev_zero = make<ZeroDevice>();
- auto dev_full = make<FullDevice>();
- auto dev_random = make<RandomDevice>();
- auto dev_ptmx = make<PTYMultiplexer>();
- auto root = KParams::the().get("root");
- if (root.is_empty()) {
- root = "/dev/hda";
- }
- if (!root.starts_with("/dev/hda")) {
- kprintf("init_stage2: root filesystem must be on the first IDE hard drive (/dev/hda)\n");
- hang();
- }
- auto dev_hd0 = IDEDiskDevice::create(IDEDiskDevice::DriveType::MASTER);
- NonnullRefPtr<DiskDevice> root_dev = dev_hd0.copy_ref();
- root = root.substring(strlen("/dev/hda"), root.length() - strlen("/dev/hda"));
- if (root.length()) {
- bool ok;
- unsigned partition_number = root.to_uint(ok);
- if (!ok) {
- kprintf("init_stage2: couldn't parse partition number from root kernel parameter\n");
- hang();
- }
- if (partition_number < 1 || partition_number > 4) {
- kprintf("init_stage2: invalid partition number %d; expected 1 to 4\n", partition_number);
- hang();
- }
- MBRPartitionTable mbr(root_dev.copy_ref());
- if (!mbr.initialize()) {
- kprintf("init_stage2: couldn't read MBR from disk\n");
- hang();
- }
- auto partition = mbr.partition(partition_number);
- if (!partition) {
- kprintf("init_stage2: couldn't get partition %d\n", partition_number);
- hang();
- }
- root_dev = *partition;
- }
- auto e2fs = Ext2FS::create(root_dev.copy_ref());
- if (!e2fs->initialize()) {
- kprintf("init_stage2: couldn't open root filesystem\n");
- hang();
- }
- vfs->mount_root(e2fs.copy_ref());
- dbgprintf("Load ksyms\n");
- load_ksyms();
- dbgprintf("Loaded ksyms\n");
- vfs->mount(ProcFS::the(), "/proc");
- vfs->mount(DevPtsFS::the(), "/dev/pts");
- int error;
- auto* system_server_process = Process::create_user_process("/bin/SystemServer", (uid_t)100, (gid_t)100, (pid_t)0, error, {}, {}, tty0);
- if (error != 0) {
- dbgprintf("init_stage2: error spawning SystemServer: %d\n", error);
- hang();
- }
- system_server_process->set_priority(Process::HighPriority);
- #ifdef STRESS_TEST_SPAWNING
- Process::create_kernel_process("spawn_stress", spawn_stress);
- #endif
- current->process().sys$exit(0);
- ASSERT_NOT_REACHED();
- }
- extern "C" {
- multiboot_info_t* multiboot_info_ptr;
- }
- extern "C" [[noreturn]] void init()
- {
- sse_init();
- kmalloc_init();
- init_ksyms();
- // must come after kmalloc_init because we use AK_MAKE_ETERNAL in KParams
- new KParams(String(reinterpret_cast<const char*>(multiboot_info_ptr->cmdline)));
- vfs = new VFS;
- dev_debuglog = new DebugLogDevice;
- auto console = make<Console>();
- RTC::initialize();
- PIC::initialize();
- gdt_init();
- idt_init();
- keyboard = new KeyboardDevice;
- ps2mouse = new PS2MouseDevice;
- dev_null = new NullDevice;
- ttyS0 = new SerialDevice(SERIAL_COM1_ADDR, 64);
- ttyS1 = new SerialDevice(SERIAL_COM2_ADDR, 65);
- ttyS2 = new SerialDevice(SERIAL_COM3_ADDR, 66);
- ttyS3 = new SerialDevice(SERIAL_COM4_ADDR, 67);
- VirtualConsole::initialize();
- tty0 = new VirtualConsole(0, VirtualConsole::AdoptCurrentVGABuffer);
- tty1 = new VirtualConsole(1);
- tty2 = new VirtualConsole(2);
- tty3 = new VirtualConsole(3);
- VirtualConsole::switch_to(0);
- kprintf("Starting Serenity Operating System...\n");
- MemoryManager::initialize();
- PIT::initialize();
- new BXVGADevice;
- auto e1000 = E1000NetworkAdapter::autodetect();
- NonnullRefPtr<ProcFS> new_procfs = ProcFS::create();
- new_procfs->initialize();
- auto devptsfs = DevPtsFS::create();
- devptsfs->initialize();
- Process::initialize();
- Thread::initialize();
- Process::create_kernel_process("init_stage2", init_stage2);
- Process::create_kernel_process("syncd", [] {
- for (;;) {
- Syscall::sync();
- current->sleep(1 * TICKS_PER_SECOND);
- }
- });
- Process::create_kernel_process("Finalizer", [] {
- g_finalizer = current;
- current->process().set_priority(Process::LowPriority);
- for (;;) {
- Thread::finalize_dying_threads();
- current->block(Thread::BlockedLurking);
- Scheduler::yield();
- }
- });
- Process::create_kernel_process("NetworkTask", NetworkTask_main);
- Scheduler::pick_next();
- sti();
- // This now becomes the idle process :^)
- for (;;) {
- asm("hlt");
- }
- }
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