From: Iris Chen <irischenlj@fb.com>
Hey everyone,
Thanks for all your comments on the SPI GPIO model. I am working through them.
As for adding support for SPI-based TPMs in QEMU, this RFC patch adds SPI
support in the QEMU TPM implementation via tpm_tis_spi.c.
The QEMU tree already has support for two connection methods to the TPM:
mmio (isa for x86, sysbus for arm) and “spapr”. This patch adds a new SPI
bus implementation for the TPM. Specifically, this SPI bus implementation
connects to the Yosemite-v3.5 model using the SPI-GPIO model sent earlier
last week. I have already tested these implementations locally together
and can verify that the Linux kernel can successfully probe the TPM device
on Yosemite-v3.5 and we can run the TPM command line tools to interact with it.
Please let me know what you think about this!
Thanks,
Iris
Iris Chen (1):
hw: tpmtisspi: add SPI support to QEMU TPM implementation
configs/devices/arm-softmmu/default.mak | 1 +
hw/arm/Kconfig | 5 +
hw/tpm/Kconfig | 5 +
hw/tpm/meson.build | 1 +
hw/tpm/tpm_tis_spi.c | 311 ++++++++++++++++++++++++
include/sysemu/tpm.h | 3 +
6 files changed, 326 insertions(+)
create mode 100644 hw/tpm/tpm_tis_spi.c
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2.30.2