#include <stdint.h>

#include "kernel/kernel.h"

#include "kernel/mem.h"
#include "kernel/vmem.h"
#include "kernel/gdt.h"
#include "kernel/scheduler.h"
#include "kernel/multiboot.h"

#include "driver/serial.h"
#include "driver/timer.h"
#include "driver/keyboard.h"
#include "driver/mouse.h"

#include "syscalls.h"
#include "types.h"
#include "fifo.h"
#include "mp.h"
#include "interrupts.h"
#include "ringbuffer.h"
#include "terminal/terminal.h"
#include "driver/screen.h"

/* F00L 0S Entry point (called directly from asm/multiboot.asm */
void kernel_main(uint32_t eax,uint32_t ebx)
{
    serial_init();
    klog("FOOL-OS ver-%s (%s)",GIT_REVISION,__DATE__);

    klog("Programmable Interval Timer (PIT) init ...");
    uint64_t unixtime=timer_init();
    klog("Unix Time = %u seconds)",unixtime);

    klog("Keyboard init ...");
    keyboard_init(0); 

    klog("Mouse init ...");
    mouse_init();

    klog("Global Descriptor Table (GDT) init ...");
    gdt_init();

    klog("Multiboot Structures init ... ");
    multiboot_information *info;
    info=get_multiboot(eax, ebx);
    
    klog("Symmetrical Multi Processing (SMP) init ... ");
    smp_processors procdata;    
    if(!acpi_find(&procdata)&&!mp_find(&procdata))kpanic("No ACPI or MP found!");

    klog("Memory init ... ");
    uint32_t kernel_blocks=mem_init(info);

    klog("Ram Filesystem init ... "); // required by mp.bin ????
    fs_mount(info);

    // Start the other Processors (before paging because apic addr etc..?)
    //TODO: !!! Check commented out sleep ()!!!
    // https://wiki.osdev.org/Symmetric_Multiprocessing
    klog("Symmetric Multi Processing (SMP) start ... ");
    smp_log_procdata(&procdata);
    //smp_start_aps(&procdata,"/boot/mp.bin"); //will be copied over mbr
    
    klog("Vritual Memory / Paging init ... ");
    pdirectory *dir=vmem_init(kernel_blocks,(uint32_t)info->framebuffer_addr);

    klog("Peripheral Component Interconnet (PCI) init ... ");
    pci_init();
    
    klog("Video Electronics Standards Association (VESA) init ... "); // TODO check if text or fb?
    uint32_t addr=kballoc(1);
    fs_content("/binfont.bin",addr,0x100); // copy 0x100 bytes to 0x7000     
    vesa_init(info->vbe_control_info,info->vbe_mode_info,addr);

    klog("stdin/stdout init ...");
    uint32_t sstdin  = syscall_open("stdin",0,0);   // stdin  0
    uint32_t sstdout = syscall_open("term",0,0);    // stdout 1
    uint32_t sstderr = syscall_open("stderr",0,0);  // stderr 2

    klog("Interrupt Vector Table (IVT) init ...");
    interrupts_init(0x08);

    klog("Enable Interrupts & Start Scheduling ...");
    scheduler_init(dir); 

}