For tpm/vtpm (uninitialized), I think you can set PcdTpmInitializationPolicy to 0 in the TPM detection module. As such, the TCG PEI will skip Startup() command. Please refer to SecurityPkg\Tcg\Tcg2Config\TpmDetection.c.
I am not clear about the passthrough mode. Which module initializes the TPM ? Can we let this module pass some information ? Thank you Yao Jiewen > -----Original Message----- > From: Marc-André Lureau <marcandre.lur...@redhat.com> > Sent: Saturday, February 15, 2020 7:34 PM > To: edk2-devel-groups-io <devel@edk2.groups.io>; Yao, Jiewen > <jiewen....@intel.com> > Cc: edk2-de...@lists.01.org; stef...@linux.ibm.com; ler...@redhat.com; > simon.ha...@itdev.co.uk > Subject: Re: [edk2-devel] [PATCH v2 0/3] Ovmf: enable TPM 1.2 > > Hi Yao > > On Thu, Feb 13, 2020 at 2:51 PM Yao, Jiewen <jiewen....@intel.com> wrote: > > > > Hi Lureau > > I don’t think we should expose the TPM Interface type via TpmCommandLib. > > > > That is the TPM device implementation. The TPM device might use > TIS/FIFO/CRB, but there might be also other type such as I2C, or fTPM > implementation type. > > > > To distinguish TPM2.0 or TPM1.2, the standard way is to send startup > command. > > Thanks for the feedback, unfortunately I don't know how to achieve > this for both tpm/vtpm (uninitialized) & passthrough (initialized). > > If the device is uninitialized, sending Tpm12Startup (TPM_ST_CLEAR) to > detect 1.2 in Tcg2ConfigPeimEntryPoint will work, but then > Tpm12Startup () in TcgPei:PeimEntryMA will later fail. > > If the device is initialized/passthrough, sending Tpm12Startup > (TPM_ST_CLEAR) will fail, so it could send Tpm12Startup (TPM_ST_STATE) > instead. But that will fail to detect uninitialized 1.2 device. > > I am stuck, any help welcome! > > thanks > > > > > Thank you > > Yao Jiewen > > > > > > > -----Original Message----- > > > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of > > > marcandre.lur...@redhat.com > > > Sent: Thursday, February 13, 2020 9:12 PM > > > To: edk2-de...@lists.01.org; devel@edk2.groups.io > > > Cc: stef...@linux.ibm.com; ler...@redhat.com; simon.ha...@itdev.co.uk; > > > Marc-André Lureau <marcandre.lur...@redhat.com> > > > Subject: [edk2-devel] [PATCH v2 0/3] Ovmf: enable TPM 1.2 > > > > > > From: Marc-André Lureau <marcandre.lur...@redhat.com> > > > > > > Hi, > > > > > > The following patches add basic TPM 1.2 support for Ovmf/QEMU. > > > > > > I tested successfully Win10 with TIS/TPM 1.2 & CRB/TPM 2.0 > > > passthrough, and emulated CRB/TPM 2.0. > > > (fwiw, I haven't tried to enable TPM_CONFIG_ENABLE) > > > > > > Marc-André Lureau (3): > > > Ovmf: rename TPM2 config prefix to TPM > > > SecurityPkg: export Tpm12GetPtpInterfaceType() > > > Ovmf: enable TPM 1.2 support > > > > > > OvmfPkg/OvmfPkgIa32.dsc | 39 +++++++++++++------ > > > OvmfPkg/OvmfPkgIa32.fdf | 10 +++-- > > > OvmfPkg/OvmfPkgIa32X64.dsc | 39 +++++++++++++------ > > > OvmfPkg/OvmfPkgIa32X64.fdf | 10 +++-- > > > OvmfPkg/OvmfPkgX64.dsc | 39 +++++++++++++------ > > > OvmfPkg/OvmfPkgX64.fdf | 10 +++-- > > > OvmfPkg/Tcg/Tcg2Config/Tcg2ConfigPei.inf | 3 ++ > > > OvmfPkg/Tcg/Tcg2Config/Tcg2ConfigPeim.c | 17 +++++++- > > > SecurityPkg/Include/Library/Tpm12DeviceLib.h | 13 +++++++ > > > .../Library/Tpm12DeviceLibDTpm/Tpm12Tis.c | 17 ++++---- > > > 10 files changed, 141 insertions(+), 56 deletions(-) > > > > > > -- > > > 2.25.0.rc2.1.g09a9a1a997 > > > > > > > > > > > > > > > > > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#54500): https://edk2.groups.io/g/devel/message/54500 Mute This Topic: https://groups.io/mt/71240877/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
