#include "CpuMpPei.h"
+//
+// Global Descriptor Table (GDT)
+//
+GLOBAL_REMOVE_IF_UNREFERENCED IA32_GDT mGdtEntries[] = {
+/* selector { Global Segment Descriptor } */
+/* 0x00 */ {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, //null descriptor
+/* 0x08 */ {{0xffff, 0, 0, 0x2, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //linear data segment descriptor
+/* 0x10 */ {{0xffff, 0, 0, 0xf, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //linear code segment descriptor
+/* 0x18 */ {{0xffff, 0, 0, 0x3, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //system data segment descriptor
+/* 0x20 */ {{0xffff, 0, 0, 0xa, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //system code segment descriptor
+/* 0x28 */ {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, //spare segment descriptor
+/* 0x30 */ {{0xffff, 0, 0, 0x2, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //system data segment descriptor
+/* 0x38 */ {{0xffff, 0, 0, 0xa, 1, 0, 1, 0xf, 0, 1, 0, 1, 0}}, //system code segment descriptor
+/* 0x40 */ {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, //spare segment descriptor
+};
+
+//
+// IA32 Gdt register
+//
+GLOBAL_REMOVE_IF_UNREFERENCED IA32_DESCRIPTOR mGdt = {
+ sizeof (mGdtEntries) - 1,
+ (UINTN) mGdtEntries
+ };
+
/**
The Entry point of the MP CPU PEIM.
{
+ //
+ // Load new GDT table on BSP
+ //
+ AsmInitializeGdt (&mGdt);
return EFI_SUCCESS;
}