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c14114832c
When in factory mode, we should not be trying to figure out board strapping options, just enable SPI interface so that the tester can communicate with the chip. Also, to close the loop with the tester, let's add indication of the cert installation result, by setting the two top bits of the DUMMY (aka underrun) character to 1 and the lower bits to the endorsement operation result (0 means success, nonzero values communicate different failure modes) and by preventing the TPM driver from sending anything but underrun chars on the SPI interface. BRANCH=cr50 BUG=b:63686091 TEST=pending Change-Id: I1a22ed6988ad87dd929a393359c4604e6ecd3b58 Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/578651 Reviewed-by: Nick Sanders <nsanders@chromium.org>
36 lines
921 B
C
36 lines
921 B
C
/* Copyright 2016 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/*
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* This header declares the TPM manufacture related interface.
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* Individual boards are expected to provide implementations.
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*/
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#ifndef __CROS_EC_TPM_MANUFACTURE_H
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#define __CROS_EC_TPM_MANUFACTURE_H
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/* Returns non-zero if the TPM manufacture steps have been completed. */
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int tpm_manufactured(void);
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/* Codes for success and various manufacturing error conditions. */
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enum manufacturing_status {
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mnf_success = 0,
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mnf_no_certs = 1,
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mnf_eps_decr = 2,
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mnf_bad_rsa_size = 3,
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mnf_bad_total_size = 4,
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mnf_bad_rsa_type = 5,
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mnf_bad_ecc_type = 6,
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mnf_hmac_mismatch = 7,
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mnf_rsa_proc = 8,
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mnf_ecc_proc = 9,
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mnf_store = 10,
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mnf_manufactured = 11,
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};
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enum manufacturing_status tpm_endorse(void);
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#endif /* __CROS_EC_TPM_MANUFACTURE_H */
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