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.
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 | 54 +++++
hw/tpm/tpm_tis.c | 12 ++
docs/specs/tpm.txt | 105 ++++++++++
hw/tpm/Makefile.objs | 1 +
hw/tpm/trace-events | 3 +
13 files changed, 723 insertions(+), 9 deletions(-)
create mode 100644 hw/tpm/tpm_ppi.h
create mode 100644 hw/tpm/tpm_ppi.c
--
2.19.0.rc1
