kernel: enable memory mapped TPM interface on armsr
The memory mapped TPM interface (TIS) can be used for
emulated or virtualized TPM instances with QEMU and
a simulation package like swtpm.
On QEMU the device will appear in the device tree
with a "tcg,tpm-tis-mmio" compatible.
For example:
qemu-system-aarch64 -machine virt -cpu max \
-bios u-boot.bin \
-nographic \
.... \
-hda openwrt-armsr-armv8-combined-efi.img \
-chardev socket,id=chrtpm,path=/tmp/mytpm/swtpm-sock \
-tpmdev emulator,id=tpm0,chardev=chrtpm \
-device tpm-tis-device,tpmdev=tpm0
Signed-off-by: Mathew McBride <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/19188
Signed-off-by: Hauke Mehrtens <[email protected]>
Mathew McBride