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Some devices allow to retrieve firmware version by reading the same 4
byte register repeatedly until the entire version string is read.
Let's print out TPM firmware version when available. Just in case
something goes wrong limit the version string length to 200 bytes.
CQ-DEPEND=CL:355701
BRANCH=none
BUG=chrome-os-partner:54723
TEST=built the new firmware and ran it on Gru, observed the following
in the coreboot console log:
Connected to device vid:did:rid of 1ae0:0028:00
Firmware version: cr50_v1.1.4792-7a44484
Original-Commit-Id: 1f54a30cebe808abf1b09478b47924bb722a0ca6
Original-Change-Id: Idb069dabb80d34a0efdf04c3c40a42ab0c8a3f94
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/355704
Original-Reviewed-by: Scott Collyer <scollyer@chromium.org>
Squashed with:
tpm: use 4 byte quantities when retrieving firmware version
The CR50 device is capable of reporting its firmware version in 4 byte
quantities, but the recently introduced code retrieves the version one
byte at a time.
With this fix the version is retrieved in 4 byte chunks.
BRANCH=none
BUG=none
TEST=the version is still reported properly, as reported by the AP
firmware console log:
localhost ~ # grep cr50 /sys/firmware/log
Firmware version: cr50_v1.1.4804-c64cf24
localhost ~ #
Original-Commit-Id: 3111537e7b66d8507b6608ef665e4cde76403818
Original-Change-Id: I04116881a30001e35e989e51ec1567263f9149a6
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/356542
Original-Reviewed-by: Andrey Pronin <apronin@chromium.org>
Change-Id: Ia9f13a5bf1c34292b866f57c0d14470fe6ca9853
Signed-off-by: Martin Roth <martinroth@chromium.org>
Reviewed-on: https://review.coreboot.org/15573
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
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The "PC Client Protection Profile for TPM 2.0" document defines SPI
bus addresses for different localities. That definition is not honored
in the cr50 implementation, this patch fixes it: locality zero
register file is based off 0xd40000.
BRANCH=none
BUG=chrome-os-partner:54720
TEST=with the fixed cr50 image and the rest of TPM2 initialization
patches applied factory initialization sequence on Gru succeeds.
Change-Id: I49b7ed55f0360448b9a6602ebd31a3a531608da3
Signed-off-by: Martin Roth <martinroth@chromium.org>
Original-Commit-Id: 43344fff5d58ec235e50030413fc38c98dd0a9a1
Original-Change-Id: I2de6fa6c05d3eca989d6785228d5adde1f2a7ab7
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/355620
Original-Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://review.coreboot.org/15568
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@googlemail.com>
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This introduces a SPI TPM driver compliant with the TCG issued "TPM
Profile (PTP) Specification Revision 00.43" which can be found by
googling its title.
The driver implements both the hardware flow control protocol and the
TPM state machine.
The hardware flow control allows to map SPI based TPM devices to the
LPC address space on x86 platforms, on all other platforms it needs to
be implemented in the driver software.
The tis layer is somewhat superficial, it might have to be expanded
later.
A lot more implementation details can be found in the code comments.
Also, it is worth mentioning that this is not a complete version of
the driver: its robustness needs to be improved, delay loops need to
be bound, error conditions need to propagate up the call stack.
BRANCH=none
BUG=chrome-os-partner:52132, chrome-os-partner:50645, chrome-os-partner:54141
TEST=with the rest of the patches applied coreboot is able complete
Chrome OS factory initialization of the TPM2 device.
Change-Id: I967bc5c689f6e6f345755f08cb088ad37abd5d1c
Signed-off-by: Martin Roth <martinroth@chromium.org>
Original-Commit-Id: 5611c6f7d7fe6d37da668f337f0e70263913d63e
Original-Change-Id: I17d732e66bd231c2289ec289994dd819c6276855
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/350124
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15298
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@googlemail.com>
Tested-by: build bot (Jenkins)
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