update v2

kernel/src/boot.s

@@ -0,0 +1,27 @@
+# Multiboot header
+.section .multiboot
+.align 8
+multiboot_header:
+    .long 0x1BADB002            # magic
+    .long 0x00                  # flags  
+    .long -(0x1BADB002 + 0x00)  # checksum
+
+# Entry point
+.section .text
+.global _start
+.code64
+_start:
+    # Disable interrupts
+    cli
+    
+    # Load null descriptor into data segment registers
+    xor %ax, %ax
+    mov %ax, %ds
+    mov %ax, %es
+    mov %ax, %ss
+    mov %ax, %fs
+    mov %ax, %gs
+    
+    # Halt
+    hlt
+1:  jmp 1b