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
