[Qemu-devel] [PATCH v13 0/6] 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.

v13:
- removed needless error handling in tpm_ppi_init()
- splitted "add ACPI memory clear interface"
- moved acpi build function in dedicated hw/acpi/tpm.c
- added some function documentation in headers
- various code cleanups suggested by Philippe
- rebased

Marc-André Lureau (3):
  tpm: add a "ppi" boolean property
  acpi: add ACPI memory clear interface
  tpm: clear RAM when "memory overwrite" requested

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      |  47 +++++
 include/hw/acpi/tpm.h |  23 +++
 include/hw/compat.h   |  11 +-
 hw/acpi/tpm.c         | 447 ++++++++++++++++++++++++++++++++++++++++++
 hw/i386/acpi-build.c  |  29 ++-
 hw/tpm/tpm_crb.c      |  11 ++
 hw/tpm/tpm_ppi.c      |  53 +++++
 hw/tpm/tpm_tis.c      |  11 ++
 docs/specs/tpm.txt    | 104 ++++++++++
 hw/acpi/Makefile.objs |   1 +
 hw/tpm/Makefile.objs  |   1 +
 hw/tpm/trace-events   |   3 +
 12 files changed, 738 insertions(+), 3 deletions(-)
 create mode 100644 hw/tpm/tpm_ppi.h
 create mode 100644 hw/acpi/tpm.c
 create mode 100644 hw/tpm/tpm_ppi.c

-- 
2.20.0