IntelFsp2Pkg: FspSecCore support for X64

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3893
1.Added FspSecCore support for X64.
2.Bumped FSP header revision to 7 to indicate FSP 64bit is supported.
3.Corrected few typos.

Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Ashraf Ali S <ashraf.ali.s@intel.com>
Signed-off-by: Ted Kuo <ted.kuo@intel.com>
Reviewed-by: Chasel Chiu <chasel.chiu@intel.com>
Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>

IntelFsp2Pkg/FspSecCore/X64/FspHelper.nasm

@@ -0,0 +1,34 @@
+;; @file
+;  Provide FSP helper function.
+;
+; Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;;
+    DEFAULT  REL
+    SECTION .text
+
+global ASM_PFX(AsmGetFspBaseAddress)
+ASM_PFX(AsmGetFspBaseAddress):
+   call  ASM_PFX(AsmGetFspInfoHeader)
+   add   rax, 0x1C
+   mov   eax, [rax]
+   ret
+
+global ASM_PFX(AsmGetFspInfoHeader)
+ASM_PFX(AsmGetFspInfoHeader):
+   lea   rax, [ASM_PFX(AsmGetFspInfoHeader)]
+   DB    0x48, 0x2d               ; sub rax, 0x????????
+global ASM_PFX(FspInfoHeaderRelativeOff)
+ASM_PFX(FspInfoHeaderRelativeOff):
+   DD    0x12345678               ; This value must be patched by the build script
+   and   rax, 0xffffffff
+   ret
+
+global ASM_PFX(AsmGetFspInfoHeaderNoStack)
+ASM_PFX(AsmGetFspInfoHeaderNoStack):
+   lea   rax, [ASM_PFX(AsmGetFspInfoHeader)]
+   lea   rcx, [ASM_PFX(FspInfoHeaderRelativeOff)]
+   mov   ecx, [rcx]
+   sub   rax, rcx
+   and   rax, 0xffffffff
+   jmp   rdi