Hi Marc-André Would you please share some information on how to use vTPM with QEMU?
I saw https://github.com/stefanberger/qemu-tpm But I am not sure if that has been integrated to official QEMU release? > -----Original Message----- > From: Laszlo Ersek <ler...@redhat.com> > Sent: Thursday, January 9, 2020 9:07 PM > To: Yao, Jiewen <jiewen....@intel.com>; Ard Biesheuvel > <ard.biesheu...@linaro.org> > Cc: edk2-devel-groups-io <devel@edk2.groups.io>; Marc-André Lureau > <marcandre.lur...@redhat.com> > Subject: Re: [PATCH 4/4] ArmVirtPkg/ArmVirtQemu: add optional support for > TPM2 measured boot > > On 01/09/20 01:51, Yao, Jiewen wrote: > > Hi > > Comment for the warning: > >>> WARNING: TPM2 Event log has HashAlg unsupported by PCR bank (0xC) > >>> WARNING: TPM2 Event log has HashAlg unsupported by PCR bank (0xD) > > > > The reason is that: The DSC added all HASH algorithm to the TCG2 driver. > (SHA1/SHA256/SHA384/SHA512/SM3). > > But the current TPM hardware device does not support SHA384 (0xC) and > SHA512 (0xD). > > > > SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.inf { > > <LibraryClasses> > > > HashLib|SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRout > erPei.inf > > NULL|SecurityPkg/Library/HashInstanceLibSha1/HashInstanceLibSha1.inf > > > NULL|SecurityPkg/Library/HashInstanceLibSha256/HashInstanceLibSha256.inf > > > NULL|SecurityPkg/Library/HashInstanceLibSha384/HashInstanceLibSha384.inf > > > NULL|SecurityPkg/Library/HashInstanceLibSha512/HashInstanceLibSha512.inf > > NULL|SecurityPkg/Library/HashInstanceLibSm3/HashInstanceLibSm3.inf > > } > > > > > > It is warning because the Firmware Image *may* want to support another > TPM2 which has such capability. > > It just means the *current* TPM2 does not support this hash. > > The platform owner may decide to clean up the warning by remove the > SHA384/SHA512 null lib instance > > support for current TPM2, or leave them as is for another TPM2. > > Thank you for the explanation! > > > BTW: Is there any document on how to enable TPM2 on QEMU ? > > I would like to have a try. :-) > > Please ask Marc-André (already CC'd) about vTPM usage with QEMU; > unfortunately, I don't know. > > Thanks! > Laszlo -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#53100): https://edk2.groups.io/g/devel/message/53100 Mute This Topic: https://groups.io/mt/69499023/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
