Hi,

The following patches implement the TPM Physical Presence Interface
that allows a user to set a command via ACPI (sysfs entry in Linux)
that, upon the next reboot, the firmware looks for and acts upon by
sending sequences of commands to the TPM.

A dedicated memory region is added to the TPM CRB & TIS devices, at
address/size 0xFED45000/0x400. A new "etc/tpm/config" fw_cfg entry
holds the location for that PPI region and some version details, to
allow for future flexibility.

With the associated edk2/ovmf firmware, the Windows HLK "PPI 1.3" test
now runs successfully.

It is based on previous work from Stefan Berger ("[PATCH v2 0/4]
Implement Physical Presence interface for TPM 1.2 and 2")

The edk2 support is merged upstream.

v7:
- relace RAM with RAM device ptr
- a few ACPI code & comments improvements
- add back proof-of-concept ACPI memory clear interface, handled in
  qemu (pass again WHLK TCG tests)

Marc-André Lureau (2):
  tpm: add a "ppi" boolean property
  PoC: tpm: add ACPI memory clear interface

Stefan Berger (3):
  tpm: implement virtual memory device for TPM PPI
  acpi: add fw_cfg file for TPM and PPI virtual memory device
  acpi: build TPM Physical Presence interface

 hw/tpm/tpm_ppi.h      |  26 +++
 include/hw/acpi/tpm.h |  17 ++
 include/hw/compat.h   |  10 +
 hw/i386/acpi-build.c  | 465 +++++++++++++++++++++++++++++++++++++++++-
 hw/tpm/tpm_crb.c      |  11 +
 hw/tpm/tpm_ppi.c      |  56 +++++
 hw/tpm/tpm_tis.c      |  11 +
 docs/specs/tpm.txt    | 101 +++++++++
 hw/tpm/Makefile.objs  |   1 +
 hw/tpm/trace-events   |   3 +
 10 files changed, 699 insertions(+), 2 deletions(-)
 create mode 100644 hw/tpm/tpm_ppi.h
 create mode 100644 hw/tpm/tpm_ppi.c

-- 
2.18.0.rc1