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 (BIOS, UEFI) looks for an acts upon by sending sequences of commands to the TPM 1.2 or 2.
My first goal is to get the virtual memory device accepted since it extends the TPM TIS (and TPM CRB) interface's internal data structure with another 256 bytes that would have to be written out when suspending the VM. So this patch would have to come before we support VM with TPM suspend and resume. The device supports 256 bytes at address 0xffff0000. This is the address that EDK2 uses and that I have patches for for SeaBIOS support. Regards, Stefan Stefan Berger (4): tpm: implement virtual memory device for TPM PPI acpi: build QEMU table for PPI virtual memory device acpi: implement aml_lless_equal acpi: build TPM Physical Presence interface hw/acpi/aml-build.c | 11 ++ hw/i386/acpi-build.c | 292 ++++++++++++++++++++++++++++++++++++++++++++ hw/tpm/Makefile.objs | 2 +- hw/tpm/tpm_ppi.c | 67 ++++++++++ hw/tpm/tpm_ppi.h | 26 ++++ hw/tpm/tpm_tis.c | 5 + include/hw/acpi/acpi-defs.h | 10 ++ include/hw/acpi/aml-build.h | 1 + include/hw/acpi/tpm.h | 37 ++++++ 9 files changed, 450 insertions(+), 1 deletion(-) create mode 100644 hw/tpm/tpm_ppi.c create mode 100644 hw/tpm/tpm_ppi.h -- 2.5.5