Add StandaloneMmIplPei IA32/X64 driver at PEI stage.
FSP will use this driver to load Standalone MM code
to dispatch other Standalone MM drivers.
Signed-off-by: Hongbin1 Zhang <hongbin1.zh...@intel.com>
Cc: Jiewen Yao <jiewen....@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Star Zeng <star.z...@intel.com>
Cc: Jiaxin Wu <jiaxin...@intel.com>
Cc: Sami Mujawar <sami.muja...@arm.com>
Cc: Ard Biesheuvel <ardb+tianoc...@kernel.org>
Cc: Supreeth Venkatesh <supreeth.venkat...@arm.com>
---
StandaloneMmPkg/Drivers/StandaloneMmIplPei/StandaloneMmIplPei.c | 13
+++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/StandaloneMmPkg/Drivers/StandaloneMmIplPei/StandaloneMmIplPei.c
b/StandaloneMmPkg/Drivers/StandaloneMmIplPei/StandaloneMmIplPei.c
index 47cc18ecbd..0d0c678f90 100644
--- a/StandaloneMmPkg/Drivers/StandaloneMmIplPei/StandaloneMmIplPei.c
+++ b/StandaloneMmPkg/Drivers/StandaloneMmIplPei/StandaloneMmIplPei.c
@@ -400,8 +400,17 @@ ExecuteSmmCoreFromSmram (
DEBUG ((DEBUG_INFO, "SMM IPL calling Standalone MM Core at SMRAM address
- 0x%016lx\n", gMmCorePrivate->MmCoreEntryPoint));
//
- // If StandaloneMmIpl driver is IA32 image, but Standalone MM core is
X64 image
- // Switch 32 bit protect mode to X64 mode and load SMM core
+ // If StandaloneMmIpl driver is X64 image, but Standalone MM core is
IA32 image
+ // This case is not supported
+ //
+ if ((sizeof (UINTN) == sizeof (UINT64)) && (ImageContext.Machine ==
EFI_IMAGE_MACHINE_IA32)) {
+ DEBUG ((DEBUG_ERROR, "X64 SMM IPL call IA32 MM core is not supported
!\n"));
+ CpuDeadLoop ();
+ }
+
+ //
+ // If StandaloneMmIpl driver is IA32 image, but Standalone MM core is
X64 image,
+ // Switch 32 bit protect mode to X64 mode and load SMM core.
//
if ((sizeof (UINTN) == sizeof (UINT32)) && (ImageContext.Machine ==
EFI_IMAGE_MACHINE_X64)) {
//
--
2.37.0.windows.1
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