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2019-01-17tss/tcg-2.0: remove unnecessary break from marshaling codeJoel Kitching
BUG=None TEST=None Change-Id: I054e0799469bf39499666342a5c639b1f766cd85 Signed-off-by: Joel Kitching <kitching@google.com> Reviewed-on: https://review.coreboot.org/c/29652 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-01-17src/security/tpm: query recovery mode from Cr50Keith Short
On the Sarien/Arcada platforms, the EC is not trusted to provide the state of the ESC+REFRESH+PWR recovery combination. On these platforms the Cr50 latches the state of REFRESH+PWR for use as the recovery mode key combination. BUG=b:122715254 BRANCH=none TEST=Verify recovery mode screen shown after pressing REFRESH+PWR Signed-off-by: Keith Short <keithshort@chromium.org> Change-Id: Ie3ce519956f916023c8c52f1d11fa93331f52f3c Reviewed-on: https://review.coreboot.org/c/30929 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2018-11-28tss: implement tlcl_save_stateJoel Kitching
When an untrusted OS is running, we would like to use the Cr50 vendor-specific VENDOR_CC_TPM_MODE command to disable TPM. Before doing this, we should save TPM state. Implement tlcl_save_state for this purpose. This needs to live in coreboot codebase since on S3 resume path, depthcharge is not reached. Implement the function in both tcg-1.2 and tcg-2.0 for completeness. BUG=b:70681930,b:118202153 TEST=hack a call to tlcl_save_state into coreboot on S3 resume verify in AP console that it is called Signed-off-by: Joel Kitching <kitching@google.com> Change-Id: I8b51ca68456fc9b655e4dc2d0958b7c040d50510 Reviewed-on: https://review.coreboot.org/c/29646 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-11-01src: Add missing include <stdint.h>Elyes HAOUAS
Change-Id: Idf10a09745756887a517da4c26db7a90a1bf9543 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/29403 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2018-10-31security/tpm: Add function to measure a region deviceWerner Zeh
Add a new function which can hash a given region device and extend a PCR in the TPM with the result. The needed SHA algorithms are included from 3rdparty/vboot and thus not duplicated in the coreboot tree. For now VB2_LIB is not usable in postcar stage. Follow-up commits will add the ability to use the lib in postcar as well. Once this feature is ready, the library will be included in postcar stage to make this function available in every stage. Change-Id: I126cc3500fd039d63743db78002a04d201ab18aa Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/29234 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-10-30security/tpm: Fix references to tpm_setup functionJonathan Neuschäfer
Change-Id: Ia97ddcd5471f8e5db50f57b67a766f08a08180b1 Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/29349 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-10-30src: Add missing include <stdint.h>Elyes HAOUAS
Change-Id: I6a9d71e69ed9230b92f0f330875515a5df29fc06 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/29312 Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-10-24tpm2/tlcl_send_startup: should pass on TPM_E_INVALID_POSTINITJoel Kitching
Change TSS layer tlcl_send_startup() to expose TPM_RC_INITIALIZE, which gets mapped to TPM_E_INVALID_POSTINIT. The return value is exposed to TSPI layer tpm_setup(), and dealt with as follows: - Regular startup: TPM_E_INVALID_POSTINIT should count as failure. - S3 resume: TPM_E_INVALID_POSTINIT can be assumed to mean that TPM maintains power during S3, and is already initialized. Also, correct an error where |response| could be erroneously accessed when it is set to NULL. BUG=b:114018226 TEST=compile coreboot Change-Id: Ib0c3750386ae04279401c1dc318c5019d39f5ecf Signed-off-by: Joel Kitching <kitching@google.com> Reviewed-on: https://review.coreboot.org/29063 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-10-18tpm/tspi: clean up tpm_setup function flowJoel Kitching
Introduce two helper functions for more readable code. Use epilogue function instead of goto for error handling. BUG=None TEST=None Change-Id: Ibea44880683a301e82ee2ba049003c36fcb44eba Signed-off-by: Joel Kitching <kitching@google.com> Reviewed-on: https://review.coreboot.org/29026 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-10-17tpm/tpm_setup: fail on invalid result from tlcl_resumeJoel Kitching
BUG=b:114018226 TEST=compile coreboot Change-Id: I8f5df2b0119d35e4000fe62bf1bba6ca07f925f3 Signed-off-by: Joel Kitching <kitching@google.com> Reviewed-on: https://review.coreboot.org/28748 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-10-15vc/google/chromeos/ec: remove EC hibernate in cr50 update pathAaron Durbin
More platforms are not able to hibernate under certain circumstances, such as when AC is plugged. This original path was conservatively put in to prevent potential damage when cr50-update-caused asynchronous resets occur. Julius' compelling argument that async resets from recovery mode requests should have enough coverage of the design over the course of project development. Remove the hibernate path and assume all is well going forward. Change-Id: I37121e75ff4e6abcb41d8534a1eccf0788ce2ea2 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/29076 Reviewed-by: Justin TerAvest <teravest@chromium.org> Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-10-08Move compiler.h to commonlibNico Huber
Its spreading copies got out of sync. And as it is not a standard header but used in commonlib code, it belongs into commonlib. While we are at it, always include it via GCC's `-include` switch. Some Windows and BSD quirk handling went into the util copies. We always guard from redefinitions now to prevent further issues. Change-Id: I850414e6db1d799dce71ff2dc044e6a000ad2552 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/28927 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2018-10-05tpm2/tlcl_send_startup: correct TPM2_Startup error logicJoel Kitching
BUG=b:114018226 TEST=compile coreboot Change-Id: Iffad582d5c19252dde1c9dc97fc7fd145944a3b3 Signed-off-by: Joel Kitching <kitching@google.com> Reviewed-on: https://review.coreboot.org/28749 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2018-08-21security/tpm: Fix TPM 1.2 state machine issuesPhilipp Deppenwiese
* Fix ACPI resume path compilation for TPM ramstage driver * Move enabling of the TPM prior activation and remove reboot return status from TPM enable. More information can be found via the TCG specification v1.2 Tested=Elgon Change-Id: Ided110e0c1889b302e29acac6d8d2341f97eb10b Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/28085 Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-08-17cr50: Allow boards to disable powering off EC on cr50 updateDaisuke Nojiri
This patch allows boards to disable turning off EC on cr50 update. If CR50 resets the whole system, an EC reset is not required. BUG=b:112604277 BRANCH=none TEST=gsctool -a -u /media/removable/cr50.bin && reboot Verify EC reboots. AP prints 'Waiting for CR50 reset to pick up update' then reboots. Change-Id: I60a7aa50a549e7a5a1a114245fbf7b9646d813bb Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org> Reviewed-on: https://review.coreboot.org/28110 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-08-10src: Fix typoElyes HAOUAS
Change-Id: I689c5663ef59861f79b68220abd146144f7618de Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/27988 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
2018-08-08security/tpm: Report tpm_unmarshal_response warningRichard Spiegel
In procedure tpm_unmarshal_response(), variable "rc" is used early to decide if it should return NULL. Later however, the code proceeds to its end even if one subroutine reports error. If "rc" is not 0, report that there was a partial error in the procedure. BUG=b:112253891 TEST=Build and boot grunt. Change-Id: I7575bc75104fd97f138224aa57561e68f6548e58 Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com> Reviewed-on: https://review.coreboot.org/27931 Reviewed-by: Martin Roth <martinroth@google.com> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-08-07security/tpm: Check for NULL pointerFurquan Shaikh
Change bce49c2 (security/tpm: Improve TCPA log generation) missed checking for NULL pointer before accessing the tcpa_table returned by tcpa_log_init. This change fixes the boot hang observed on octopus by ensuring pointer is checked for NULL before using it. BUG=b:111403731 TEST=Verified that octopus boots up fine. Change-Id: I2e46197065f8db1dc028a85551546263e60d46b2 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/27933 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Justin TerAvest <teravest@chromium.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2018-08-03security/tpm: Improve TCPA log generationPhilipp Deppenwiese
* Make tcpa_log_init static and move init code into the tcpa_log_add_table_entry routine. * Add more checks for log initialization. * Fix minor issues Change-Id: I215d79eed7ad17c6ab87f0c4b14a282e519ef07d Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/27769 Reviewed-by: Julius Werner <jwerner@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-07-31security/tpm/tspi: Set return type of tcpa_log_add_table_entry as voidFurquan Shaikh
Change f849972 (security/vboot: Enable TCPA log extension) enabled support for adding TCPA log to CBMEM. However, if CBMEM is not online, this function doesn't do anything and returns early. This condition is not really a valid error condition as it depends on when the call to tcpa_log_add_table_entry is made. Since tcpa_log_add_table_entry returns -1 when cbmem is not online, tpm_extend_pcr prints an error message with prefix "ERROR:". This can confuse any scripts trying to catch errors in boot flow. This CL makes the following changes: 1. Removes the print in tpm_extend_pcr since tcpa_log_add_table_entry already prints out appropriate ERROR messages in case of failure to add log entry. 2. Since the return value of tcpa_log_add_table_entry is not used anymore, return type for tcpa_log_add_table_entry is changed to void. BUG=b:112030232 Change-Id: I32d313609a3e57845e67059b3747b81b5c8adb2a Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/27757 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Reviewed-by: Justin TerAvest <teravest@chromium.org>
2018-07-30security/vboot: Enable TCPA log extensionPhilipp Deppenwiese
* Implement TCPA log for tspi extend function. * Hook tcpa_log_init into vboot tpm_setup function. * Add TCPA log output for vboot GBB flags and HWID Change-Id: I22b1aa8da1a95380c39715727615ce5ce4c9443f Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/27727 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
2018-07-28security/tpm: Add TCPA logging functionalityPhilipp Deppenwiese
* TCG spec only applies to BIOS or UEFI. * Therefore implement coreboot TCPA compliant log in CBMEM. * Write CBMEM log into the coreboot table for CBMEM tool access Change-Id: I0a52494f647d21e2587231af26ed13d62b3a72f5 Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/22867 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
2018-06-04security/tpm: Unify the coreboot TPM software stackPhilipp Deppenwiese
* Remove 2nd software stack in pc80 drivers directory. * Create TSPI interface for common usage. * Refactor TSS / TIS code base. * Add vendor tss (Cr50) directory. * Change kconfig options for TPM to TPM1. * Add user / board configuration with: * MAINBOARD_HAS_*_TPM # * BUS driver * MAINBOARD_HAS_TPM1 or MAINBOARD_HAS_TPM2 * Add kconfig TPM user selection (e.g. pluggable TPMs) * Fix existing headers and function calls. * Fix vboot for interface usage and antirollback mode. Change-Id: I7ec277e82a3c20c62a0548a1a2b013e6ce8f5b3f Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/24903 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2018-03-16security/tpm: Fix TPM software stack vulnerabilityzaolin
* Fix tlcl_read() for TPM 1.2 * https://github.com/nccgroup/TPMGenie Change-Id: I1618b2cc579d189bccca7a781e2bed0976a8b471 Signed-off-by: zaolin <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/25184 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-01-18security/tpm: Move TSS stacks into sub-directoryPhilipp Deppenwiese
Change-Id: I5e20d98665c17d39f3f69772093a062bb905f6f9 Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/22105 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2018-01-18security/tpm: Change TPM naming for different layers.Philipp Deppenwiese
* Rename tlcl* to tss* as tpm software stack layer. * Fix inconsistent naming. Change-Id: I206dd6a32dbd303a6d4d987e424407ebf5c518fa Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/22104 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2018-01-18security/tpm: Move tpm TSS and TSPI layer to security sectionPhilipp Deppenwiese
* Move code from src/lib and src/include into src/security/tpm * Split TPM TSS 1.2 and 2.0 * Fix header includes * Add a new directory structure with kconfig and makefile includes Change-Id: Id15a9aa6bd367560318dfcfd450bf5626ea0ec2b Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/22103 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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