linux-kernel - [PATCH 2/2] TPM: integrity interface

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Message-Id: <85d5d1dd55645f16dd4a9129ff6d9acd07c4d255.1233269000.git.srajiv@linux.vnet.ibm.com>
Date:	Thu, 29 Jan 2009 21:01:35 -0200
From:	Rajiv Andrade <srajiv@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, dave@...ux.vnet.ibm.com,
	jmorris@...ei.org, matthltc@...ibm.com, zohar@...ux.vnet.ibm.com
Subject: [PATCH 2/2] TPM: integrity interface

This patch adds internal kernel support for:
  - reading/extending a pcr value
  - looking up the tpm_chip for a given chip number

Signed-off-by: Rajiv Andrade <srajiv@...ux.vnet.ibm.com>
Signed-off-by: Mimi Zohar <zohar@...ibm.com>
---
 include/linux/tpm.h |   35 +++++++++++++++++++++++++++++++++++
 1 files changed, 35 insertions(+), 0 deletions(-)
 create mode 100644 include/linux/tpm.h

diff --git a/include/linux/tpm.h b/include/linux/tpm.h
new file mode 100644
index 0000000..3338b3f
--- /dev/null
+++ b/include/linux/tpm.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2004,2007,2008 IBM Corporation
+ *
+ * Authors:
+ * Leendert van Doorn <leendert@...son.ibm.com>
+ * Dave Safford <safford@...son.ibm.com>
+ * Reiner Sailer <sailer@...son.ibm.com>
+ * Kylene Hall <kjhall@...ibm.com>
+ * Debora Velarde <dvelarde@...ibm.com>
+ *
+ * Maintained by: <tpmdd_devel@...ts.sourceforge.net>
+ *
+ * Device driver for TCG/TCPA TPM (trusted platform module).
+ * Specifications at www.trustedcomputinggroup.org
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ *
+ */
+#ifndef __LINUX_TPM_H__
+#define __LINUX_TPM_H__
+
+/*
+ * Chip num is this value or a valid tpm idx
+ */
+#define	TPM_ANY_NUM 0xFFFF
+
+#if defined(CONFIG_TCG_TPM)
+
+extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf);
+extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash);
+#endif
+#endif
-- 
1.5.6.3

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