#include <cpu.h>
#include <cpu/interrupts.h>
#include <ports.h>
#include <multiboot.h>

struct cpu *cpus[16];
struct ioapic ioapic = {0,0,0};
uint8_t irq_redirects[MAX_IRQS] = \
    {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23};

#define PIC1_ADDR 0x20
#define PIC2_ADDR 0xA0
#define PIC_INITIALIZE 0x10
#define PIC_SINGLE 0x02
static void pic_disable() {
    // Absolute minimum work to initialize and disable legacy PIC.
    // Both the primary and secondary PIC will think they are alone
    // in a MCS-80 arch computer but that doesn't matter since all
    // interrupts will be masked anyway :)
    // Ref: Intel 8259A Datasheet
    outb(PIC1_ADDR, PIC_INITIALIZE | PIC_SINGLE);
    outb(PIC2_ADDR, PIC_INITIALIZE | PIC_SINGLE);
    outb(PIC1_ADDR | 1, 0);
    outb(PIC2_ADDR | 1, 0);
    // Mask all interrupts
    outb(PIC1_ADDR | 1, 0xFF);
    outb(PIC2_ADDR | 1, 0xFF);
}

void early_cpu_init() {
    interrupt_init();
}

void cpu_init() {
    acpi_parse(kernel_boot_data.rsdp);
    pic_disable();
    apic_init();
    ioapic_init();
}