#include <tty.h>
#include <io.h>
+#include <irq/idt.h>
+#include <irq/i8259a.h>
#include <stdint.h>
-const char *string = "Hello there!\n\n\
-Hopefully your machine manages to print this text.\n\
-If it did, that's great news because I managed to write a partial VGA driver.\n\n\
-Right now, the short-term roadmap is as follows:\n\n\
-* Complete the text-mode part of the VGA driver.\n\
-* Enable interrupts using the PIC.\n\
-* Write a driver for the Intel 8042 PS/2 controller so the OS can receive keystrokes.\n\
-* Once all that is done, it would be desirable to start the switch to userspace so the OS can actually be remotely usable.\n\n\
-Feel free to mess around with the code, although I doubt it will be very interesting at the moment.\n";
+extern void double_fault(struct abort_frame *frame);
+extern void keyb_handler(struct interrupt_frame *frame);
+struct idt_descriptor idt[256] __attribute__((aligned(0x10)));
+struct idtr idtr __attribute__((aligned(0x10)));
void _start(void)
{
screen_clear();
- /*kprint(string, 0x07);*/
- kprint("Color 0x01\n", VGA_COLOR_BLUE);
- kprint("Color 0x02\n", VGA_COLOR_GREEN);
- kprint("Color 0x03\n", VGA_COLOR_TEAL);
- kprint("Color 0x04\n", VGA_COLOR_DARK_RED);
- kprint("Color 0x05\n", VGA_COLOR_MAGENTA);
- kprint("Color 0x06\n", VGA_COLOR_BROWN);
- kprint("Color 0x07\n", VGA_COLOR_LIGHT_GRAY);
- kprint("Color 0x08\n", VGA_COLOR_DARK_GRAY);
- kprint("Color 0x09\n", VGA_COLOR_PURPLE);
- kprint("Color 0x0A\n", VGA_COLOR_LIME);
- kprint("Color 0x0B\n", VGA_COLOR_CYAN);
- kprint("Color 0x0C\n", VGA_COLOR_BRIGHT_RED);
- kprint("Color 0x0D\n", VGA_COLOR_PINK);
- kprint("Color 0x0E\n", VGA_COLOR_YELLOW);
- kprint("Color 0x0F\n", VGA_COLOR_WHITE);
- kprintb(0xAE);
+ kprint("Welcome to Nameless OS!\nRunning revision: ", 0);
+ kprint(GIT_COMMIT, 0);
kprint("\n", 0);
- kprintw(0xDEAD);
- kprint("\n", 0);
- kprintd(0x89ABCDEF);
+ kprint("Preparing IDT...\n", 0);
+ idt_set_descriptor(idt, 0x8, 0x8, (uint32_t) double_fault, IDT_TRAP_GATE, 0x0);
+ idt_set_descriptor(idt, 0x21, 0x8, (uint32_t) keyb_handler, IDT_INTERRUPT_GATE, 0x0);
+ kprint("IDT prepared, loading...\n", 0);
+ populate_idtr(&idtr, idt);
+ load_idt(idtr);
+ kprint("IDT loaded, enabling interrupts...\n", 0);
+ pic_init(0x20, 0x28);
+ pic_mask_all();
+ pic_unmask(1);
+ asm volatile ("sti");
+ kprint("All done\n", 0);
+ while(1);
}