Cleanup

src/boot.S

@@ -16,5 +16,5 @@ _start:
 	mov	sp, #LOW_MEMORY // Initialize the kernel stack pointer to +4mb, growing downwards
 	bl	kernel_main     // kernel_main()
 	
-halt:
+halt: // Doesn't actually shut down the other cores for now, just makes them spin endlessly
 	b halt

src/kernel.c

@@ -36,7 +36,8 @@ void kernel_main(void)
 	delay(1000);
     uart_send_string("Hello, world!\r\n");
 
-    /*while (1) {
+    while (1) {
+        // Echo back chars, the way a normal console would.  
         uart_send(uart_recv());
-    }*/
+    }
 }