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.

v11:
- fix migration issue with bad RAM size, round it up to host-page size

v10:
- fix 3.1 pc machines patch
- describe PPI memory size in doc
- change "Memory overwrite variable" location to offset 0x15a

Marc-André Lureau (3):
  hw/i386: add pc-i440fx-3.1 & pc-q35-3.1
  tpm: add a "ppi" boolean property
  tpm: add ACPI memory clear interface

Stefan Berger (3):
  tpm: allocate/map buffer for TPM Physical Presence interface
  acpi: expose TPM/PPI configuration parameters to firmware via fw_cfg
  acpi: build TPM Physical Presence interface

 hw/tpm/tpm_ppi.h      |  28 +++
 include/hw/acpi/tpm.h |  17 ++
 include/hw/compat.h   |  11 +-
 include/hw/i386/pc.h  |   5 +-
 hw/i386/acpi-build.c  | 456 +++++++++++++++++++++++++++++++++++++++++-
 hw/i386/pc_piix.c     |  15 +-
 hw/i386/pc_q35.c      |  13 +-
 hw/tpm/tpm_crb.c      |  12 ++
 hw/tpm/tpm_ppi.c      |  55 +++++
 hw/tpm/tpm_tis.c      |  12 ++
 docs/specs/tpm.txt    | 105 ++++++++++
 hw/tpm/Makefile.objs  |   1 +
 hw/tpm/trace-events   |   3 +
 13 files changed, 724 insertions(+), 9 deletions(-)
 create mode 100644 hw/tpm/tpm_ppi.h
 create mode 100644 hw/tpm/tpm_ppi.c

-- 
2.19.0.rc1