x86/head64.c: Early update ucode in 64-bit

This updates ucode on BSP in 64-bit mode. Paging and virtual address are
working now.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1356075872-3054-11-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

arch/x86/kernel/head64.c

@@ -26,6 +26,7 @@
 #include <asm/e820.h>
 #include <asm/bios_ebda.h>
 #include <asm/bootparam_utils.h>
+#include <asm/microcode.h>
 
 /*
  * Manage page tables very early on.
@@ -170,6 +171,11 @@ void __init x86_64_start_kernel(char * real_mode_data)
 
 	copy_bootdata(__va(real_mode_data));
 
+	/*
+	 * Load microcode early on BSP.
+	 */
+	load_ucode_bsp();
+
 	if (console_loglevel == 10)
 		early_printk("Kernel alive\n");