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path: root/src/drivers/spi/tpm/tpm.h
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2020-05-11treewide: Convert more license headers to SPDX stylePatrick Georgi
Change-Id: Ia3de79c7d71049da00ed108829eac6cb49ff3ed6 Signed-off-by: Patrick Georgi <pgeorgi@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41205 Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2016-06-23tpm2: add SPI TPM driverVadim Bendebury
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)