-void _start(void)
+#include <stdint.h>
+#include <tty.h>
+#include <io.h>
+#include <irq/idt.h>
+#include <irq/interrupt.h>
+#include <irq/i8259a.h>
+#include <input/ps2.h>
+
+struct idt_descriptor idt[256] __attribute__((aligned(0x10)));
+struct idtr idtr __attribute__((aligned(0x10)));
+extern void (*_int_handler_table[48])(void);
+
+void kmain(void)
{
- char *video_memory = (char *) 0xB8000; /* VGA VRAM starts at 0xB8000 */
- *video_memory = 'A'; /* put an A at the beginning of the VRAM */
+ int ps2_success;
+ screen_clear();
+ kprint("Welcome to Nameless OS!\nRunning revision: ", 0);
+ kprint(GIT_COMMIT, 0);
+ kprint("\n", 0);
+ kprint("Preparing IDT...\n", 0);
+ for (int i=0; i<48; i++) {
+ idt_set_descriptor(idt, i, 0x8, _int_handler_table[i], IDT_INTERRUPT_GATE, 0);
+ }
+ kprint("IDT prepared, loading...\n", 0);
+ populate_idtr(&idtr, idt);
+ load_idt(idtr);
+ kprint("Setting up interrupts...\n", 0);
+ pic_init(0x20, 0x28);
+ pic_mask_all();
+ ps2_success = ps2_initialize();
+ switch (ps2_success) {
+ case -1:
+ kprint("No PS/2 devices found or working, we will have no input\n", 0);
+ break;
+ case 0:
+ kprint("Found one working PS/2 device\n", 0);
+ break;
+ case 1:
+ kprint("Found two working PS/2 devices\n", 0);
+ }
+ asm volatile ("sti");
+ kprint("All done\n", 0);
+ while(1);
}