first version of ide controller

kernel/cpu/timer.c

@@ -37,6 +37,13 @@ static void timer_callback(registers_t regs) {
     tick++;
 }
 
+void sleep(u32 milliseconds) {
+    u32 done = tick + milliseconds;
+    while (done != milliseconds) {
+        k_wait_for_interrupt();
+    }
+}
+
 void print_current_tick() {
     char msg[32];
     memset(msg, 0, 32);

kernel/cpu/timer.h

@@ -9,5 +9,6 @@
 
 int init_timer(u32 freq);
 void print_current_tick();
+void sleep(u32 milliseconds);
 
 #endif //MY_KERNEL_TIMER_H