On Wed, 3 Nov 2021 at 09:09, Ilias Apalodimas ilias.apalodimas@linaro.org 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 ilias.apalodimas@linaro.org
doc/board/emulation/qemu-arm.rst | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
Reviewed-by: Simon Glass sjg@chromium.org
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