X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=include%2Ftpm.h;h=c6316329f5ab58c720135eb8b68f4cb107aa7aa6;hb=51cd5a147dbd0ea31df5b2b543624ef309b4272b;hp=f88388f3530f99cebf7ded7456bc5740a65f99a0;hpb=0f4b2ba1762d74c0b5520d99a58796d6ca78abf0;p=u-boot

diff --git a/include/tpm.h b/include/tpm.h
index f88388f353..c6316329f5 100644
--- a/include/tpm.h
+++ b/include/tpm.h
@@ -1,8 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (c) 2013 The Chromium OS Authors.
  * Coypright (c) 2013 Guntermann & Drunck GmbH
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef __TPM_H
@@ -84,9 +83,12 @@ enum tpm_capability_areas {
 };
 
 #define TPM_NV_PER_GLOBALLOCK		(1U << 15)
+#define TPM_NV_PER_PPREAD		(1U << 16)
 #define TPM_NV_PER_PPWRITE		(1U << 0)
 #define TPM_NV_PER_READ_STCLEAR		(1U << 31)
 #define TPM_NV_PER_WRITE_STCLEAR	(1U << 14)
+#define TPM_NV_PER_WRITEDEFINE		(1U << 13)
+#define TPM_NV_PER_WRITEALL		(1U << 12)
 
 enum {
 	TPM_PUBEK_SIZE			= 256,
@@ -651,4 +653,16 @@ uint32_t tpm_flush_specific(uint32_t key_handle, uint32_t resource_type);
 uint32_t tpm_find_key_sha1(const uint8_t auth[20], const uint8_t
 			   pubkey_digest[20], uint32_t *handle);
 #endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */
+
+/**
+ * Read random bytes from the TPM RNG. The implementation deals with the fact
+ * that the TPM may legally return fewer bytes than requested by retrying
+ * until @p count bytes have been received.
+ *
+ * @param data		output buffer for the random bytes
+ * @param count		size of output buffer
+ * @return return code of the operation
+ */
+uint32_t tpm_get_random(void *data, uint32_t count);
+
 #endif /* __TPM_H */