U-Boot

#!/bin/sh
# SPDX-License-Identifier: BSD-2
#
# This script launches swtpm to emulate a TPMv2.
#
# The parameter -t makes it unload when the connection to QEMU is
# terminated.
#
# To make use of it add
#
#     qemu_helper_script="swtpm"
#
# to the board script and the following arguments to qemu_extra_args
#
#     -chardev socket,id=chrtpm,path=/tmp/tpm/swtpm-sock \
#     -tpmdev emulator,id=tpm0,chardev=chrtpm \
#     -device tpm-tis-device,tpmdev=tpm0
#
# U-Boot must be built with CONFIG_TPM2_MMIO=y.

set -e

rm -rf /tmp/tpm
mkdir -p /tmp/tpm

if [ -n "${helper_setup}" ]; then
    eval "${helper_setup}"
fi
swtpm socket -d -t --tpmstate dir=/tmp/tpm --tpm2 \
--ctrl type=unixio,path=/tmp/tpm/swtpm-sock