From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thiebaud Weksteen Subject: [PATCH v2 0/3] Call GetEventLog before ExitBootServices Date: Mon, 11 Sep 2017 12:00:19 +0200 Message-ID: <20170911100022.7251-1-tweek@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Return-path: Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, mjg59-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, peterhuewe-Mmb7MZpHnFY@public.gmane.org, jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org, jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org, tpmdd-yWjUBOtONefk1uMJSBkQmQ@public.gmane.org, Thiebaud Weksteen List-Id: tpmdd-devel@lists.sourceforge.net With TPM 1.2, the ACPI table ("TCPA") has two fields to recover the Event Log Area (LAML and LASA). These logs are useful to understand and rebuild the final values of PCRs. With TPM 2.0, the ACPI table ("TPM2") does not contain these fields anymore. The recommended method is now to call the GetEventLog EFI protocol before ExitBootServices. Implement this method within the EFI stub and create copy of the logs for the TPM device. This will create /sys/kernel/security/tpm0/binary_bios_measurements for TPM 2.0 devices (similarly to the current behaviour for TPM 1.2 devices). ------------------------------------------------------------------------------- Patchset Changelog: Version 2: - Move tpm_eventlog.h to top include directory, add commit for this. - Use EFI_LOADER_DATA to store the configuration table - Whitespace and new lines fixes Thiebaud Weksteen (3): tpm: move tpm_eventlog.h outside of drivers folder efi: call get_event_log before ExitBootServices tpm: parse TPM event logs based on EFI table arch/x86/boot/compressed/eboot.c | 1 + drivers/char/tpm/Makefile | 2 +- drivers/char/tpm/tpm-chip.c | 3 +- drivers/char/tpm/tpm-interface.c | 2 +- drivers/char/tpm/tpm.h | 35 ++++++++-- drivers/char/tpm/tpm1_eventlog.c | 17 +++-- drivers/char/tpm/tpm2_eventlog.c | 2 +- drivers/char/tpm/tpm_acpi.c | 2 +- drivers/char/tpm/tpm_efi.c | 66 ++++++++++++++++++ drivers/char/tpm/tpm_of.c | 2 +- drivers/firmware/efi/Makefile | 2 +- drivers/firmware/efi/efi.c | 4 ++ drivers/firmware/efi/libstub/Makefile | 3 +- drivers/firmware/efi/libstub/tpm.c | 81 ++++++++++++++++++++++ drivers/firmware/efi/tpm.c | 39 +++++++++++ include/linux/efi.h | 50 +++++++++++++ {drivers/char/tpm => include/linux}/tpm_eventlog.h | 32 ++------- 17 files changed, 301 insertions(+), 42 deletions(-) create mode 100644 drivers/char/tpm/tpm_efi.c create mode 100644 drivers/firmware/efi/tpm.c rename {drivers/char/tpm => include/linux}/tpm_eventlog.h (77%) -- 2.14.1.581.gf28d330327-goog