X-Git-Url: http://git.dujemihanovic.xyz/projects?a=blobdiff_plain;f=kernel%2Fkernel.c;h=4c6efd8692da90d7ab15cf782846b3194e9483f7;hb=94770e6354578485b2aed68dcc3064e5d6862645;hp=e04b875e2959b5963e7c6f4ba394abba1f5f0be5;hpb=668fa121eb74d3317a73c2289f8805aaf1c84d7e;p=nameless-os.git

diff --git a/kernel/kernel.c b/kernel/kernel.c
index e04b875..4c6efd8 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -1,5 +1,31 @@
-void _start(void)
+#include <tty.h>
+#include <io.h>
+#include <irq/idt.h>
+#include <irq/i8259a.h>
+#include <stdint.h>
+
+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 kmain(void)
 {
-	char *video_memory = (char *) 0xB8000; /* VGA VRAM starts at 0xB8000 */
-	*video_memory = 'A'; /* put an A at the beginning of the VRAM */
+	screen_clear();
+	kprint("Welcome to Nameless OS!\nRunning revision: ", 0);
+	kprint(GIT_COMMIT, 0);
+	kprint("\n", 0);
+	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);
 }