Untitled_Kernel/src/main.c

//Our own code, at this point...
#include <stdint.h>
#include "vga.h"
#include "io.h"
#include "kttools.h"
#include "kmultiboot.h"
#include "idt.h"
#include "serial.h"
void kern_main(uint32_t multiboot_magic, mb_info_t* multiboot_info)
{
    //Hello C! Let's get to work in cleaning up our environment a bit and creating some safety.
    //First interrupts.
    setup_idt();
 
    //Let's get some output schemas ready.
    
    //VGA prep
    vga_ctx_t vga_ctx;
    vga_ctx.attributes = DEFAULT_ATTRIBUTES;
    vga_ctx.cursor_row = 0;
    vga_ctx.cursor_col = 0;
    char_writer_t vga_writer;
    vga_writer.ctx = &vga_ctx;
    vga_writer.putChar = vga_out;
    default_vga = &vga_writer;
    vga_clear_ctx(&vga_ctx);

    //Serial prep
    serial_ctx_t serial_ctx;
    serial_ctx.port = COM1;
    char_writer_t serial_writer;
    serial_writer.ctx = &serial_ctx;
    serial_writer.putChar = serial_send8;
    default_COM = &serial_writer;
    serial_init(&serial_ctx); 

    
    printf(&vga_writer, "Entry eax:%X\n", multiboot_magic);

    if(multiboot_magic != 0x2BADB002) {
        println(&vga_writer, "Bootloader not multiboot1 compliant! Needed for mmap, etc. Can't work without it, kthxbye!");
        return;
    } else {
        println(&vga_writer, "Multiboot detected! Continuing...");
    }
    printf(&vga_writer, "MEM_LOWER:%X\n", multiboot_info->mem_lower);
    printf(&vga_writer, "MEM_UPPER:%X\n", multiboot_info->mem_upper);
}