Re: [PATCH] UefiCpuPkg: SecCoreNative without ResetVector

["Ashraf Ali S" <ashraf.ali.s@intel.com>]

Hi., Ray

BIOS boot to OS verified in Simics Successfully with the following changes.
1. SecCoreNative.inf with new GUID.
2. Removed IA32 resetvector code from SecCoreNative.
3. Removed the ResetVector Code from PlatformSecLib
4. Consumed the ResetVector Code from UefiCpuPkg/ResetVector

The reason for this change:
Currently SecCore and ResetVector are using the Same GUID (BFV guid), which will block the usage of both SecCore and UefiCpuPkg/ResetVector at a same time.

Advantage of this patch:
1. Provided the Backward compatibility by keeping the original SecCore
2. User can use both SecCoreNative and ResetVector at a same time.
3. User can choose to avoid resetvector code maintenance at the platform level.


Regards,
Ashraf Ali S
Intel Technology India Pvt. Ltd. 

-----Original Message-----
From: Ni, Ray <ray.ni@intel.com> 
Sent: Monday, July 19, 2021 8:13 AM
To: S, Ashraf Ali <ashraf.ali.s@intel.com>; devel@edk2.groups.io
Cc: Kumar, Rahul1 <rahul1.kumar@intel.com>; De, Debkumar <debkumar.de@intel.com>; Han, Harry <harry.han@intel.com>; West, Catharine <catharine.west@intel.com>; Solanki, Digant H <digant.h.solanki@intel.com>; V, Sangeetha <sangeetha.v@intel.com>
Subject: RE: [PATCH] UefiCpuPkg: SecCoreNative without ResetVector

Ashraf,
What unit tests have you performed with this native SecCore?

Thanks,
Ray

-----Original Message-----
From: S, Ashraf Ali <ashraf.ali.s@intel.com>
Sent: Wednesday, July 14, 2021 5:48 PM
To: devel@edk2.groups.io
Cc: S, Ashraf Ali <ashraf.ali.s@intel.com>; Ni, Ray <ray.ni@intel.com>; Kumar, Rahul1 <rahul1.kumar@intel.com>; De, Debkumar <debkumar.de@intel.com>; Han, Harry <harry.han@intel.com>; West, Catharine <catharine.west@intel.com>; Solanki, Digant H <digant.h.solanki@intel.com>; V, Sangeetha <sangeetha.v@intel.com>
Subject: [PATCH] UefiCpuPkg: SecCoreNative without ResetVector

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3492

Currently SecCore.inf having the resetvector code under IA32. if the user wants to use both SecCore and UefiCpuPkg ResetVector it's not possible, since SecCore and ResetVector(VTF0.INF/ResetVector.inf)
are sharing the same GUID which is BFV. to overcome this issue we can create the Duplicate version of the SecCore.inf as SecCoreNative.inf which contains pure SecCore Native functionality without resetvector.
SecCoreNative.inf should have the Unique GUID so that it can be used along with UefiCpuPkg ResetVector in there implementation.

Signed-off-by: Ashraf Ali S <ashraf.ali.s@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Debkumar De <debkumar.de@intel.com>
Cc: Harry Han <harry.han@intel.com>
Cc: Catharine West <catharine.west@intel.com>
Cc: Digant H Solanki <digant.h.solanki@intel.com>
Cc: Sangeetha V <sangeetha.v@intel.com>
---
 UefiCpuPkg/SecCore/SecCoreNative.inf | 80 ++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 UefiCpuPkg/SecCore/SecCoreNative.inf

diff --git a/UefiCpuPkg/SecCore/SecCoreNative.inf b/UefiCpuPkg/SecCore/SecCoreNative.inf
new file mode 100644
index 0000000000..f89a0e5f38
--- /dev/null
+++ b/UefiCpuPkg/SecCore/SecCoreNative.inf
@@ -0,0 +1,80 @@
+## @file
+#  SecCoreNative module that implements the SEC phase.
+#
+#  This is the first module taking control after the reset vector.
+#  The entry point function is _ModuleEntryPoint in PlatformSecLib.
+#  The entry point function will start with protected mode, since the # 
+the transistion to flat mode it done by the resetvector, enable # 
+temporary memory and call into SecStartup().
+#
+#  Copyright (c) 2021, Intel Corporation. All rights reserved.<BR> #
+SPDX-License-Identifier: BSD-2-Clause-Patent # ##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = SecCore
+  MODULE_UNI_FILE                = SecCore.uni
+  FILE_GUID                      = 43CA74CA-7D29-49A0-B3B9-20F84015B27D
+  MODULE_TYPE                    = SEC
+  VERSION_STRING                 = 1.0
+
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = IA32 X64 EBC
+#
+
+[Sources]
+  SecMain.c
+  SecMain.h
+  FindPeiCore.c
+  SecBist.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  UefiCpuPkg/UefiCpuPkg.dec
+
+[LibraryClasses]
+  BaseMemoryLib
+  DebugLib
+  PlatformSecLib
+  PcdLib
+  DebugAgentLib
+  UefiCpuLib
+  PeCoffGetEntryPointLib
+  PeCoffExtraActionLib
+  CpuExceptionHandlerLib
+  ReportStatusCodeLib
+  PeiServicesLib
+  PeiServicesTablePointerLib
+  HobLib
+
+[Ppis]
+  ## SOMETIMES_CONSUMES
+  ## PRODUCES
+  gEfiSecPlatformInformationPpiGuid
+  ## SOMETIMES_CONSUMES
+  ## SOMETIMES_PRODUCES
+  gEfiSecPlatformInformation2PpiGuid
+  gEfiTemporaryRamDonePpiGuid                          ## PRODUCES
+  ## NOTIFY
+  ## SOMETIMES_CONSUMES
+  gPeiSecPerformancePpiGuid
+  gEfiPeiCoreFvLocationPpiGuid
+  ## CONSUMES
+  gRepublishSecPpiPpiGuid
+
+[Guids]
+  ## SOMETIMES_PRODUCES   ## HOB
+  gEfiFirmwarePerformanceGuid
+
+[Pcd]
+  gUefiCpuPkgTokenSpaceGuid.PcdPeiTemporaryRamStackSize  ## CONSUMES
+  gEfiMdeModulePkgTokenSpaceGuid.PcdMigrateTemporaryRamFirmwareVolumes
+## CONSUMES
+
+[UserExtensions.TianoCore."ExtraFiles"]
+  SecCoreExtra.uni
--
2.30.2.windows.1