[Qemu-devel] [PATCH v6 0/4] Add support for TPM Physical Presence interface

[Marc-André Lureau]

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.

v6: (see changeset in patches)
 - replace mmio region with ram
 - ASL code improvements
 - endianess fix on 8bit fw-cfg fields

v5:
 - more code documentation (Marc-André)
 - use some explicit named variables to ease reading (Marc-André)
 - use fixed size fields/memory regions, remove PPI struct (Marc-André)
 - only add PPI ACPI methods if PPI is enabled (Marc-André)
 - document the qemu/firmware ACPI memory region (Stefan)
 - remove the dummy ACPI memory clear interface patch

v4:
 - add a "ppi" property, default to true, unless machine <= 2.12
 - pass PPI address to tpm_ppi_init_io()
 - renamed tpm_ppi struct name

Marc-André Lureau (1):
  tpm: add a "ppi" boolean property

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      |  25 +++
 include/hw/acpi/tpm.h |  17 ++
 include/hw/compat.h   |  10 +
 hw/i386/acpi-build.c  | 420 +++++++++++++++++++++++++++++++++++++++++-
 hw/tpm/tpm_crb.c      |  11 ++
 hw/tpm/tpm_ppi.c      |  33 ++++
 hw/tpm/tpm_tis.c      |  11 ++
 docs/specs/tpm.txt    |  99 ++++++++++
 hw/tpm/Makefile.objs  |   2 +-
 hw/tpm/trace-events   |   4 +
 10 files changed, 629 insertions(+), 3 deletions(-)
 create mode 100644 hw/tpm/tpm_ppi.h
 create mode 100644 hw/tpm/tpm_ppi.c

-- 
2.18.0.rc1