[SeaBIOS] vTPM 2.0 is recognized as vTPM 1.2 on the Win 10 virtual machine with seabios

[汤福]

Excuse me, is there some case of successful attempts on Windows 10? Could you provide me some technical docs? Thanks!


> -----原始邮件-----
> 发件人: "Marc-André Lureau" <marcandre.lureau at gmail.com>
> 发送时间: 2018-08-23 16:37:36 (星期四)
> 收件人: tangfu at gohighsec.com
> 抄送: "Kevin O'Connor" <kevin at koconnor.net>, seabios at seabios.org
> 主题: Re: [SeaBIOS] vTPM 2.0 is recognized as vTPM 1.2 on the Win 10 virtual machine with seabios
> 
> Hi
> 
> On Thu, Aug 23, 2018 at 9:29 AM 汤福 <tangfu at gohighsec.com> wrote:
> >
> > Hi，
> >    I am sorry, I bothered you. Still vTPM 2.0 for win 10 problem， I downloaded the latest qemu source from git, the version is V3.0.50. I think this is the latest code of qemu upstream. I also downloaded seabios upstream and bulid it with tpm2 support.  Unfortunately, I tried both passthrough and emulator, and I didn’t get the expected results.
> >
> >    For emulator， I did it like this：
> >    #mkdir /tmp/mytpm2/
> >    #chown tss:root /tmp/mytpm2
> >    #swtpm_setup --tpmstate /tmp/mytpm2 --create-ek-cert --create-platform-cert --allow-signing --tpm2
> >    #swtpm socket --tpmstate dir=/tmp/mytpm2   --ctrl type=unixio,path=/tmp/mytpm2/swtpm-sock   --log level=20 --tpm2
> >
> >    No errors occurred, suggesting that the certificate was also generated successfully.Then I created a blank img file named win10.img，and install win10  virtual machine as follows：
> >    #qemu-system-x86_64 -display sdl -enable-kvm -cdrom win10.iso -serial stdio -m 2048 -boot d -bios bios.bin   -boot menu=on  -chardev socket,id=chrtpm,path=/tmp/mytpm2/swtpm-sock -tpmdev emulator,id=tpm0,chardev=chrtpm -device tpm-crb,tpmdev=tpm0 win10-ovmf.img
> >    Enter the system when the system is successfully installed，I found that the TPM 2.0 device was not found in the System Device Manager. If I replace -device tpm-crb with -device tpm-tis and reboot the system，The TPM device can be found in the device manager.But the vTPM 2.0 is recognized as vTPM 1.2.
> >
> >    I also tried passthrough mode， The result is the same as emulator. So, what could be the problem?
> >
> 
> Try with OVMF. According to some technical docs, it seems Windows
> requires UEFI & CRB for TPM 2. That's also what testing suggestsTry.
> We are able to pass most WLK TPM tests with this setup.
> 
> >
> >
> > > -----原始邮件-----
> > > 发件人: "Kevin O'Connor" <kevin at koconnor.net>
> > > 发送时间: 2018-08-21 12:08:59 (星期二)
> > > 收件人: "汤福" <tangfu at gohighsec.com>
> > > 抄送: seabios at seabios.org
> > > 主题: Re: [SeaBIOS] vTPM 2.0 is recognized as vTPM 1.2 on the Win 10 virtual machine with seabios
> > >
> > > On Mon, Aug 13, 2018 at 04:45:43PM +0800, 汤福 wrote:
> > > > Hi,
> > > >
> > > > I want to use the vTPM in a qemu Windows image. Unfortunately, it didn't work.
> > > > First, the equipment:
> > > > TPM 2.0 hardware
> > > > CentOS 7.2
> > > > Qemu v2.10.2
> > > > SeaBIOS 1.11.0
> > > > libtpm and so on
> > >
> > > If you retry with the latest SeaBIOS code from the master branch, does
> > > the problem still exist?
> > >
> > > See:
> > > https://mail.coreboot.org/pipermail/seabios/2018-August/012384.html
> > >
> > > -Kevin
> > _______________________________________________
> > SeaBIOS mailing list
> > SeaBIOS at seabios.org
> > https://mail.coreboot.org/mailman/listinfo/seabios
> 
> 
> 
> -- 
> Marc-André Lureau