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BUG=chrome-os-partner:9707 TEST=manual make make runtests You can also test it by clearing the TPM, then manually looking at the TPM regions. In dev-mode, clear the regions and you'll see something like this: localhost ~ # tpmc read 1007 a 1 0 0 0 0 0 0 0 0 0 localhost ~ # tpmc read 1008 d 1 4c 57 52 47 0 0 0 0 0 0 0 0 localhost ~ # Go back to normal mode and reboot, and you'll see something like this: localhost ~ # tpmc read 1007 a 2 0 1 0 1 0 0 0 0 4f localhost ~ # tpmc read 1008 d 2 4c 57 52 47 1 0 1 0 0 0 0 55 localhost ~ # The important things are that the first number is now 2, instead of 1, and the last number is not zero (it's a checksum, so it'll vary depending on the other numbers, which will themselves vary according to the firmware and kernel versions). Change-Id: Ia4040311c2a4b2819792549b883377c8b6b89d48 Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/22856 Reviewed-by: Randall Spangler <rspangler@chromium.org>
14 lines
383 B
C
14 lines
383 B
C
/* Copyright (c) 2011 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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* Very simple 8-bit CRC function.
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*/
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#ifndef VBOOT_REFERENCE_CRC8_H_
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#define VBOOT_REFERENCE_CRC8_H_
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#include "sysincludes.h"
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uint8_t Crc8(const void* data, int len);
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#endif /* VBOOT_REFERENCE_CRC8_H_ */
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