added boot messages

kernel/src/lib.rs

@@ -59,18 +59,37 @@ pub fn boot() -> Result<(), &'static str> {
     use arch::x86_64::{gdt, interrupts, memmap, memory};
 
     let memory_map = memmap::get_memory_map();
+
+    print_log!("    Initialising Serial... ");
     lib_serial::init()?;
+    println_log!("[Success]");
+
+    print_log!("    Setting Up Global Descriptor Table... ");
     gdt::init();
+    println_log!("[Success]");
+
+    print_log!("    Setting Up Interrupt Descriptor Table... ");
     interrupts::init_idt();
+    println_log!("[Success]");
 
+    print_log!("    Setting Up Page Table... ");
     let mut frame_allocator = unsafe { memory::FoundryOSFrameAllocator::init(memory_map) };
+    println_log!("[Success]");
 
-    x86_64::instructions::interrupts::enable();
-
+    print_log!("    Initialising Memory Subsystem... ");
     let physical_memory_offset = VirtAddr::new(*memmap::PHYSICAL_MEMORY_OFFSET);
     let mut l4_table = unsafe { memory::init(physical_memory_offset) };
+    println_log!("[Success]");
 
-    init_heap(&mut l4_table, &mut frame_allocator);
+    print_log!("    Initialising Heap... ");
+    if let Err(e) = init_heap(&mut l4_table, &mut frame_allocator) {
+        return Err("Failed to initialise heap");
+    }
+    println_log!("[Success]");
+
+    print_log!("    Enabling Interrupts... ");
+    x86_64::instructions::interrupts::enable();
+    println_log!("[Success]");
 
     Ok(())
 }