A potential issue may happen when FSP creates/changes page table while
bootloader doesn't expect page table being changed in FSP.
Current, FSP API support to save/restore stack, IDT and general purpose
registers. Following the same pattern, add save/restore page table
support to solve this issue.
Note that this feature only impacts FSP API mode, and is controlled
by PCD PcdFspSaveRestorePageTableEnable. For compatibility, the PCD
default value is set as FALSE.
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert
Ia32/Stack.asm to Ia32/Stack.nasm
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming.gao@intel.com>