Jiewen, The Tcg2Smm driver support to submit the TPM operation request to pre-OS environment and pre-OS environment, but it only transfer the operation request code and the request parameter and save to the "Tcg2PhysicalPresence" variable. But at the execution part, the interface only transfer the operation request code. See blow: UINT32 EFIAPI Tcg2PpVendorLibExecutePendingRequest ( IN TPM2B_AUTH *PlatformAuth, OPTIONAL IN UINT32 OperationRequest, IN OUT UINT32 *ManagementFlags, OUT BOOLEAN *ResetRequired ); This can't meet some vendors' requirement. It drop the request parameter and we need it for some operation or validation. That is why we want to extend the interface with the PPdata, it contain the whole parameters we need.
About the function Index, same reason, we need it to do some operations and validations. Transfer the PPdata pointer can solve all the problems. Thanks, Zhichao > -----Original Message----- > From: Yao, Jiewen > Sent: Friday, January 3, 2020 1:30 PM > To: Gao, Zhichao <zhichao....@intel.com>; devel@edk2.groups.io > Cc: Wang, Jian J <jian.j.w...@intel.com>; Zhang, Chao B > <chao.b.zh...@intel.com>; Justen, Jordan L <jordan.l.jus...@intel.com>; > Laszlo Ersek <ler...@redhat.com>; Ard Biesheuvel > <ard.biesheu...@linaro.org>; Marc-André Lureau > <marcandre.lur...@redhat.com>; Stefan Berger <stef...@linux.ibm.com> > Subject: RE: [PATCH 00/13] Extend and fix the TCG/TCG2 Physical Presence > Interface > > What is the platform use case? > Please give at least some examples. > > > > -----Original Message----- > > From: Gao, Zhichao <zhichao....@intel.com> > > Sent: Friday, January 3, 2020 1:08 PM > > To: Yao, Jiewen <jiewen....@intel.com>; devel@edk2.groups.io > > Cc: Wang, Jian J <jian.j.w...@intel.com>; Zhang, Chao B > > <chao.b.zh...@intel.com>; Justen, Jordan L > > <jordan.l.jus...@intel.com>; Laszlo Ersek <ler...@redhat.com>; Ard > > Biesheuvel <ard.biesheu...@linaro.org>; Marc-André Lureau > > <marcandre.lur...@redhat.com>; Stefan Berger > <stef...@linux.ibm.com> > > Subject: RE: [PATCH 00/13] Extend and fix the TCG/TCG2 Physical > > Presence Interface > > > > See below. > > > > > -----Original Message----- > > > From: Yao, Jiewen > > > Sent: Friday, January 3, 2020 11:09 AM > > > To: Gao, Zhichao <zhichao....@intel.com>; devel@edk2.groups.io > > > Cc: Wang, Jian J <jian.j.w...@intel.com>; Zhang, Chao B > > > <chao.b.zh...@intel.com>; Justen, Jordan L > > > <jordan.l.jus...@intel.com>; Laszlo Ersek <ler...@redhat.com>; Ard > > > Biesheuvel <ard.biesheu...@linaro.org>; Marc-André Lureau > > > <marcandre.lur...@redhat.com>; Stefan Berger > <stef...@linux.ibm.com> > > > Subject: RE: [PATCH 00/13] Extend and fix the TCG/TCG2 Physical > > > Presence Interface > > > > > > Hi > > > I am not clear on the purpose of this extension. > > > > > > The Bugzilla just describes the solution. > > > But what is the problem you are trying to resolve? > > > > > > I completely don’t understand. > > > > > > Please do consider add the background information there. > > > Or it is hard for me to comment. > > > > > > > > > Thank you > > > Yao Jiewen > > > > > > > -----Original Message----- > > > > From: Gao, Zhichao <zhichao....@intel.com> > > > > Sent: Friday, January 3, 2020 11:04 AM > > > > To: devel@edk2.groups.io > > > > Cc: Yao, Jiewen <jiewen....@intel.com>; Wang, Jian J > > > > <jian.j.w...@intel.com>; Zhang, Chao B <chao.b.zh...@intel.com>; > > > > Justen, Jordan L <jordan.l.jus...@intel.com>; Laszlo Ersek > > > > <ler...@redhat.com>; Ard Biesheuvel <ard.biesheu...@linaro.org>; > > > > Marc-André Lureau <marcandre.lur...@redhat.com>; Stefan Berger > > > > <stef...@linux.ibm.com> > > > > Subject: [PATCH 00/13] Extend and fix the TCG/TCG2 Physical > > > > Presence Interface > > > > > > > > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2443 > > > > > > > > 1. Add two interfaces Tcg2PpVendorLibExecutePendingRequestEx and > > > > Tcg2PpVendorLibSubmitRequestToPreOSFunctionEx to > Tcg2PpVendorLib. > > > > It has one more parameter PPData (type > EFI_TCG2_PHYSICAL_PRESENCE) > > > > to transfer more data. > > > > 2. Use the Ex version instead of original one in > > > > Tcg2PhysicalPresenceLib 3. Add a pcd > > > > PcdPhysicalPresenceUserConfirmTimeout to control the user confirm > > > > input key timeout. > > > > 4. Add FunctionIndex to structure type EFI_TCG2_PHYSICAL_PRESENCE > > > > to transfer > > > > mTcgNvs->PhysicalPresence.Parameter data. > > > > 5. Add parameter FunctionIndex to > > > > Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunctionEx > > > > to initialize the PPdata. > > > > Background: > > Some platforms implement their own Tcg2PpVendorLib and want to > operate > > with more parameters. > > > > #1-#2 and #4-#5 changes aim to add extend the interface with PPdata. > > PPdata pointer can transfer most of the required parameter to do the > operation. > > All the extend changes is for the PPdata and transfer to the platform > > implemented interfaces. This would affect the platforms which > > implement their own Tcg2PpVendorLib. > > But for open source platform, I didn't see any implementation of it. > > > > #3 aims to add a pcd to let the customers to decide whether to wait > > for the input forever or with a timeout count. > > > > > > 6. Move Tcg2ConfigNvData.h from SecurityPkg/Tcg/Tcg2Config to > > > > SecurityPkg/Include. > > > > It is useful for platform code to implement their own > > Tcg2PhysicalPresenceLib. > > > > #6 is a movement to decrease the duplicated code at platform side if > > the platform code implement its own TCG library or driver. > > > > > > 7. Replace the ASSERT with error code return in > > > > TpmPhysicalPresenceLib > > > > #7 aims to remove the ASSERT because it is not critical. ASSERT when > > fail to call TpmPhysicalPresence and GetTpmCapability is not a good > behavior. > > > > > > 8. Fix one operation > > > > (PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE) flow of > > > > TcgPhysicalPresenceLib (refer to Physical Presence Interface Spec Page > 37). > > > > #8 is a bug fix to follow the spec. > > > > Thanks, > > Zhichao > > > > > > > > > > Cc: Jiewen Yao <jiewen....@intel.com> > > > > Cc: Jian J Wang <jian.j.w...@intel.com> > > > > Cc: Chao Zhang <chao.b.zh...@intel.com> > > > > Cc: Jordan Justen <jordan.l.jus...@intel.com> > > > > Cc: Laszlo Ersek <ler...@redhat.com> > > > > Cc: Ard Biesheuvel <ard.biesheu...@linaro.org> > > > > Cc: Marc-André Lureau <marcandre.lur...@redhat.com> > > > > Cc: Stefan Berger <stef...@linux.ibm.com> > > > > Signed-off-by: Zhichao Gao <zhichao....@intel.com> Zhichao Gao (13): > > > > SecurityPkg/Tcg2PpVerndorLib: Add two Ex function to handle PPdata > > > > SecurityPkg/Tcg2PpVendorLib: Add implementation of new Ex > function > > > > SecurityPkg/Tcg2PhysicalPresenceLib: Use the new Ex function > > > > SecurityPkg/SmmTcg2PhysicalPresenceLib: Use the new Ex function > > > > SecurityPkg/dec: Add a pcd for user response wait time > > > > OvmfPkg/Tcg2PhysicalPresenceLib: Use pcd for user response wait > time > > > > SecurityPkg/Tcg2PhysicalPresenceLib: Use Pcd for user resp wait time > > > > SecurityPkg/TcgPyhsicalPresenceLib: Use Pcd for user resp wait time > > > > SecurityPkg/Tcg2PhysicalPresenceData.h: Add FunctionIndex for > PPdata > > > > SecurityPkg/Tcg2PhysicalPresenceLib: Extend the submit preOS func > > > > SecurityPkg: Move the Tcg2ConfigNvData.h to Include folder > > > > SecurityPkg/TcgPhysicalPresenceLib: Replace the ASSERT with error > code > > > > SecurityPkg/TcgPhysicalPresenceLib: Fix the operation of 11 > > > > > > > > .../DxeTcg2PhysicalPresenceLib.c | 63 +++++++--- > > > > .../DxeTcg2PhysicalPresenceLib.inf | 6 +- > > > > .../Include/Guid/Tcg2PhysicalPresenceData.h | 3 +- > > > > .../Include/Library/Tcg2PhysicalPresenceLib.h | 4 +- > > > > SecurityPkg/Include/Library/Tcg2PpVendorLib.h | 54 ++++++++- > > > > .../Tcg2Config => Include}/Tcg2ConfigNvData.h | 2 +- > > > > .../DxeTcg2PhysicalPresenceLib.c | 68 ++++++++--- > > > > .../DxeTcg2PhysicalPresenceLib.inf | 4 +- > > > > .../DxeTcgPhysicalPresenceLib.c | 110 ++++++++++++------ > > > > .../DxeTcgPhysicalPresenceLib.inf | 6 +- > > > > .../SmmTcg2PhysicalPresenceLib.c | 15 ++- > > > > .../Tcg2PpVendorLibNull/Tcg2PpVendorLibNull.c | 61 +++++++++- > > > > SecurityPkg/SecurityPkg.dec | 7 +- > > > > SecurityPkg/SecurityPkg.uni | 7 +- > > > > SecurityPkg/Tcg/Tcg2Config/Tcg2Config.vfr | 4 +- > > > > SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigDxe.inf | 3 +- > > > > SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigImpl.h | 4 +- > > > > SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigPei.inf | 3 +- > > > > SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigPeim.c | 4 +- > > > > SecurityPkg/Tcg/Tcg2Config/TpmDetection.c | 4 +- > > > > SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c | 10 +- > > > > 21 files changed, 347 insertions(+), 95 deletions(-) rename > > > > SecurityPkg/{Tcg/Tcg2Config => Include}/Tcg2ConfigNvData.h (94%) > > > > > > > > -- > > > > 2.21.0.windows.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. 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