On Mon, Jul 16, 2018 at 02:59:43PM +0200, Marc-André Lureau wrote:
> 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.
ACPI bits:
Acked-by: Michael S. Tsirkin <mst@redhat.com>
> v8: ACPI code improvements
> - replace various aml_int() with variables
> - make op/op_flags common variables
> - replace the switch field indexing hack by a dynamic operation region
>
> 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 | 456 +++++++++++++++++++++++++++++++++++++++++-
> 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, 690 insertions(+), 2 deletions(-)
> create mode 100644 hw/tpm/tpm_ppi.h
> create mode 100644 hw/tpm/tpm_ppi.c
>
> --
> 2.18.0.129.ge3331758f1