[RFC v2 0/6] vTPM for aarch64

[Eric Auger]

This series adds the capability to instantiate an MMIO TPM TIS
in ARM virt.

The existing TPM TIS code is reshuffled into a generic part,
the ISA device and the sysbus device. The last patch allows
the instantiation of the TPM TIS sysbus device in ARM virt.

The series was tested with the swtpm/libtpms emulator.
Automatic guest LUKS volume unlocking (tpm2) was successful.
EDK2 support is under development [3]. Thanks to Ard
for supporting me when setting up the test environment.

Best Regards

Eric

Testing:

mkdir /tmp/tpm
swtpm socket \
--tpm2 \
-t -d \
--tpmstate dir=/tmp/tpm \
--ctrl type=unixio,path=/tmp/swtpm-sock

qemu command line must be augmented with the following options:

-chardev socket,id=chrtpm,path=/tmp/swtpm-sock \
-tpmdev emulator,id=tpm0,chardev=chrtpm \
-device tpm-tis-device,tpmdev=tpm0 \

References:
[1] libtpms: https://github.com/stefanberger/libtpms/wiki
[2] swtpm: https://github.com/stefanberger/swtpm/wiki
[3] [PATCH 0/4] ArmVirtPkg: implement measured boot for ArmVirtQemu

This series can be found at:
https://github.com/eauger/qemu/tree/v4.2.0-tpm-rfc-v2

History:

RFC v1 -> RFC v2:
- restructure the existing code with common, ISA and sysbus part.
- both ARM and x86 integration were tested.
- acknowledgement: migration has not been tested

Eric Auger (6):
  tpm: rename TPM_TIS into TPM_TIS_ISA
  tpm: Use TPMState as a common struct
  tpm: Separate tpm_tis common functions from isa code
  tpm: Separate TPM_TIS and TPM_TIS_ISA configs
  tpm: Add the SysBus TPM TIS device
  hw/arm/virt: vTPM support

 default-configs/i386-softmmu.mak       |   2 +-
 hw/arm/Kconfig                         |   1 +
 hw/arm/sysbus-fdt.c                    |  36 +++++
 hw/arm/virt.c                          |   7 +
 hw/i386/Kconfig                        |   2 +-
 hw/i386/acpi-build.c                   |   6 +-
 hw/tpm/Kconfig                         |  12 +-
 hw/tpm/Makefile.objs                   |   4 +-
 hw/tpm/tpm_tis.h                       |  91 +++++++++++++
 hw/tpm/{tpm_tis.c => tpm_tis_common.c} | 181 ++-----------------------
 hw/tpm/tpm_tis_isa.c                   | 170 +++++++++++++++++++++++
 hw/tpm/tpm_tis_sysbus.c                | 159 ++++++++++++++++++++++
 include/sysemu/tpm.h                   |   7 +-
 tests/qtest/Makefile.include           |   4 +-
 14 files changed, 502 insertions(+), 180 deletions(-)
 create mode 100644 hw/tpm/tpm_tis.h
 rename hw/tpm/{tpm_tis.c => tpm_tis_common.c} (85%)
 create mode 100644 hw/tpm/tpm_tis_isa.c
 create mode 100644 hw/tpm/tpm_tis_sysbus.c

-- 
2.20.1