Luna/kernel/src/main.cpp

#define MODULE "main"

#include "acpi/RSDT.h"
#include "assert.h"
#include "config.h"
#include "cpu/CPU.h"
#include "gdt/GDT.h"
#include "init/Init.h"
#include "init/InitRD.h"
#include "interrupts/IDT.h"
#include "interrupts/Install.h"
#include "interrupts/Interrupts.h"
#include "io/PIC.h"
#include "io/Serial.h"
#include "log/Log.h"
#include "memory/KernelMemoryManager.h"
#include "memory/Memory.h"
#include "memory/MemoryMap.h"
#include "memory/RangeAllocator.h"
#include "panic/hang.h"
#include "power/reboot.h"
#include "rand/Mersenne.h"
#include "render/Framebuffer.h"
#include "render/TextRenderer.h"
#include "scheduling/PIT.h"
#include "std/stdio.h"
#include "std/stdlib.h"
#include "std/string.h"
#include "thread/Scheduler.h"

extern "C" void _start()
{
    Init::check_magic();
    Init::disable_smp(); // Put all other cores except the bootstrap one in an infinite loop
    Init::early_init();

    kinfoln("Starting Moon %s", moon_version());

    CPU::log_cpu_information();

    Memory::walk_memory_map();

    kdbgln("System memory: %ld KB", Memory::get_system() / 1024);
    kdbgln("    Free memory : %ld KB", kernelPMM.get_free() / 1024);
    kdbgln("    Used memory : %ld KB", kernelPMM.get_used() / 1024);
    kdbgln("    Reserved memory : %ld KB", kernelPMM.get_reserved() / 1024);

    GDT::load();

    kinfoln("Loaded GDT");

    Interrupts::install();

    IDT::load();

    kinfoln("Loaded IDT");

    PIC::remap();
    PIC::enable_master(0b11111100); // enable keyboard and PIT
    PIC::enable_slave(0b11111111);

    kinfoln("Prepared PIC");

    PIT::initialize(200); // 200 times per second

    kinfoln("Prepared PIT");

    Scheduler::init();

    kinfoln("Prepared scheduler");

    Scheduler::add_kernel_task([]() {
        while (1)
        {
            sleep(1000);
            for (int i = 0; i < 5; i++) { Serial::println("woo!"); }
        }
    });

    Scheduler::add_kernel_task([]() {
        sleep(500);
        while (1)
        {
            sleep(2000);
            for (int i = 0; i < 6; i++) { Serial::println("boo!"); }
        }
    });

    Scheduler::add_kernel_task([]() {
        sleep(20000);
        kinfoln("Here i am, the hard-to-get thread!");
        while (1) Scheduler::yield();
    });

    kinfoln("Prepared scheduler tasks");

    ACPI::SDTHeader* rootSDT = ACPI::GetRSDTOrXSDT();
    bool isXSDT = ACPI::IsXSDT();
    if (!ACPI::ValidateRSDTOrXSDT(rootSDT)) kerrorln("Invalid %s", isXSDT ? "XSDT" : "RSDT");

    framebuffer0.clear(Color::Cyan);

    Interrupts::enable();

    kinfoln("Interrupts enabled");

    sleep(20000);
    reboot();
}