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.
v14:
- rebased, fixing conflicts after compat-props refactoring
- fix build regression from v13 with --disable-tpm
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 | 46 +++++
include/hw/acpi/tpm.h | 21 ++
hw/acpi/tpm.c | 448 ++++++++++++++++++++++++++++++++++++++++++
hw/core/machine.c | 8 +
hw/i386/acpi-build.c | 29 ++-
hw/tpm/tpm_crb.c | 11 ++
hw/tpm/tpm_ppi.c | 53 +++++
hw/tpm/tpm_tis.c | 11 ++
stubs/tpm.c | 5 +
docs/specs/tpm.txt | 104 ++++++++++
hw/acpi/Makefile.objs | 1 +
hw/tpm/Makefile.objs | 1 +
hw/tpm/trace-events | 3 +
13 files changed, 739 insertions(+), 2 deletions(-)
create mode 100644 hw/tpm/tpm_ppi.h
create mode 100644 hw/acpi/tpm.c
create mode 100644 hw/tpm/tpm_ppi.c
--
2.20.1.2.gb21ebb671b
