From: "Yao, Jiewen" <jiewen.yao@intel.com>
To: Laszlo Ersek <lersek@redhat.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: edk2-devel-groups-io <devel@edk2.groups.io>,
"Marc-André Lureau" <marcandre.lureau@redhat.com>
Subject: Re: [PATCH 4/4] ArmVirtPkg/ArmVirtQemu: add optional support for TPM2 measured boot
Date: Fri, 10 Jan 2020 00:32:02 +0000 [thread overview]
Message-ID: <74D8A39837DF1E4DA445A8C0B3885C503F8D90BB@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <b79484cf-47e5-1166-3ca2-2a3d4f116720@redhat.com>
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 <lersek@redhat.com>
> Sent: Thursday, January 9, 2020 9:07 PM
> To: Yao, Jiewen <jiewen.yao@intel.com>; Ard Biesheuvel
> <ard.biesheuvel@linaro.org>
> Cc: edk2-devel-groups-io <devel@edk2.groups.io>; Marc-André Lureau
> <marcandre.lureau@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
next prev parent reply other threads:[~2020-01-10 0:32 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-07 9:47 [PATCH 0/4] ArmVirtPkg: implement measured boot for ArmVirtQemu Ard Biesheuvel
2020-01-07 9:47 ` [PATCH 1/4] OvmfPkg/Tcg2ConfigPei: introduce a signalling PPI to depex on Ard Biesheuvel
2020-01-07 11:58 ` Laszlo Ersek
2020-01-07 9:47 ` [PATCH 2/4] ArmVirtPkg/PlatformPeiLib: discover the TPM base address from the DT Ard Biesheuvel
2020-01-07 15:42 ` Laszlo Ersek
2020-01-08 14:41 ` Ard Biesheuvel
2020-01-09 13:04 ` Laszlo Ersek
2020-01-07 9:47 ` [PATCH 3/4] ArmVirtPkg/PlatformPeiLib: implement Reset2 PPI based on PSCI Ard Biesheuvel
2020-01-07 16:50 ` Laszlo Ersek
2020-01-07 16:55 ` [edk2-devel] " Ard Biesheuvel
2020-01-07 18:47 ` Laszlo Ersek
2020-01-08 9:59 ` Ard Biesheuvel
2020-01-07 9:48 ` [PATCH 4/4] ArmVirtPkg/ArmVirtQemu: add optional support for TPM2 measured boot Ard Biesheuvel
2020-01-07 17:37 ` Laszlo Ersek
2020-01-08 14:13 ` Ard Biesheuvel
2020-01-08 14:45 ` Laszlo Ersek
2020-01-09 0:51 ` Yao, Jiewen
2020-01-09 13:07 ` Laszlo Ersek
2020-01-10 0:32 ` Yao, Jiewen [this message]
2020-01-13 1:55 ` [edk2-devel] " Gary Lin
2020-01-13 15:56 ` Laszlo Ersek
2020-01-07 11:55 ` [PATCH 0/4] ArmVirtPkg: implement measured boot for ArmVirtQemu Laszlo Ersek
2020-01-07 12:04 ` Ard Biesheuvel
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