init.c

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#include <boot/boot.h>
#include <boot/multiboot.h>
#include <console/earlycon.h>
#include <core/kargs.h>
#include <core/platform.h>
#include <core/printk.h>
#include <core/string.h>
#include <cpu/cpu.h>
#include <ds/bitmap.h>
#include <sys/cpu.h>
#include <sys/lock.h>
#include <mm/mm.h>
#include <mm/vm.h>
#include <video/vbe.h>
 
struct boot *__kboot;
 
/* the stack of the boot CPU's idle loop */
static char bsp_idle_stack[8192] __aligned(16);

void x86_cpu_init(void)
{
    /* the boot CPU's own structure, first (curcpu(), curthread) */
    struct cpu *bsp = &cpus[0];
    bsp->id = 0;
    bsp->arch.idle_stack = (uintptr_t) bsp_idle_stack + sizeof(bsp_idle_stack);
    cpus_count = 1;
 
    x86_gdt_setup(bsp, VMA(0x100000ULL));
 
    /* hold the kernel lock until the first process runs */
    kernel_lock();
 
    earlycon_init();
    printk("x86: Welcome to AquilaOS!\n");
 
    printk("x86: installing IDT\n");
    x86_idt_setup();
 
    printk("x86: installing ISRs\n");
    x86_isr_setup();
 
    x86_fpu_setup();
 
    printk("x86: processing multiboot info block at %p\n", (uintptr_t) multiboot_info);
    struct boot *boot = process_multiboot_info((multiboot_info_t *)(uintptr_t) multiboot_info);
    __kboot = boot;
 
    mm_setup(boot);
    kvmem_setup();
 
    /* the kernel's command line */
    kargs_parse(boot->cmdline);
 
    /* the early console again, as the command line says */
    earlycon_reinit();
 
    platform_init();
 
    extern void kmain(struct boot *);
    kmain(boot);
}