Init struct + freeing a bit of kmain()

src/io/serial/serial.c

@@ -7,6 +7,8 @@
 #include <kernel.h>
 #include "serial.h"
 
+extern struct init_status init;
+
 void outb(int port, unsigned char data)
 {
     __asm__ __volatile__("outb %%al, %%dx" :: "a" (data),"d" (port));
@@ -43,6 +45,7 @@ int serial_init()
     outb(PORT + 4, 0x0F);
 
     DEBUG("*** Welcome to PepperOS! ***");
+    init.serial = true;
     return 0;
 }