security/tpm: Unify the coreboot TPM software stack

* Remove 2nd software stack in pc80 drivers directory.
* Create TSPI interface for common usage.
* Refactor TSS / TIS code base.
* Add vendor tss (Cr50) directory.
* Change kconfig options for TPM to TPM1.
* Add user / board configuration with:
  * MAINBOARD_HAS_*_TPM # * BUS driver
  * MAINBOARD_HAS_TPM1 or MAINBOARD_HAS_TPM2
  * Add kconfig TPM user selection (e.g. pluggable TPMs)
* Fix existing headers and function calls.
* Fix vboot for interface usage and antirollback mode.

Change-Id: I7ec277e82a3c20c62a0548a1a2b013e6ce8f5b3f
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: https://review.coreboot.org/24903
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

1 files changed, 44 insertions, 0 deletions

diff --git a/src/security/tpm/tspi.h b/src/security/tpm/tspi.h
new file mode 100644
index 0000000000..fdc9e1c187
--- /dev/null
+++ b/src/security/tpm/tspi.h
@@ -0,0 +1,44 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+ * Copyright 2018 Facebook Inc.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef TSPI_H_
+#define TSPI_H_
+
+#include <security/tpm/tss.h>
+
+/**
+ * Ask vboot for a digest and extend a TPM PCR with it.
+ * @param pcr sets the pcr index
+ * @param digest sets the hash to extend into the tpm
+ * @param out_digest get extended hash
+ * @return TPM_SUCCESS on success. If not a tpm error is returned
+ */
+uint32_t tpm_extend_pcr(int pcr, uint8_t *digest, uint8_t *out_digest);
+
+/**
+ * Issue a TPM_Clear and reenable/reactivate the TPM.
+ * @return TPM_SUCCESS on success. If not a tpm error is returned
+ */
+uint32_t tpm_clear_and_reenable(void);
+
+/**
+ * Start the TPM and establish the root of trust.
+ * @param s3flag tells the tpm setup if we wake up from a s3 state on x86
+ * @return TPM_SUCCESS on success. If not a tpm error is returned
+ */
+uint32_t tpm_setup(int s3flag);
+
+#endif /* TSPI_H_ */