On Wed, 3 Nov 2021 at 09:09, Ilias Apalodimas <[email protected]> wrote: > > A previous patch added support for an mmio based TPM. > Add an example in QEMU on it's usage > > Signed-off-by: Ilias Apalodimas <[email protected]> > --- > doc/board/emulation/qemu-arm.rst | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+) >
Reviewed-by: Simon Glass <[email protected]> Any particular QEMU version? We should enable this in CI. > diff --git a/doc/board/emulation/qemu-arm.rst > b/doc/board/emulation/qemu-arm.rst > index 8d7fda10f15e..584ef0a7e150 100644 > --- a/doc/board/emulation/qemu-arm.rst > +++ b/doc/board/emulation/qemu-arm.rst > @@ -81,6 +81,31 @@ can be enabled with the following command line parameters: > > These have been tested in QEMU 2.9.0 but should work in at least 2.5.0 as > well. > > +Enabling TPMv2 support > +---------------------- > + > +To emulate a TPM the swtpm package may be used. It can be built from the > +following repositories: > + > + https://github.com/stefanberger/swtpm.git > + > +Swtpm provides a socket for the TPM emulation which can be consumed by QEMU. > + > +In a first console invoke swtpm with:: > + > + swtpm socket --tpmstate dir=/tmp/mytpm1 \ > + --ctrl type=unixio,path=/tmp/mytpm1/swtpm-sock --log level=20 > + > +In a second console invoke qemu-system-aarch64 with:: > + > + -chardev socket,id=chrtpm,path=/tmp/mytpm1/swtpm-sock \ > + -tpmdev emulator,id=tpm0,chardev=chrtpm \ > + -device tpm-tis-device,tpmdev=tpm0 > + > +Enable the TPM on U-Boot's command line with:: > + > + tpm2 startup TPM2_SU_CLEAR > + > Debug UART > ---------- > > -- > 2.33.1 > Regards, Simon
