4 files changed, 36 insertions, 1 deletions
diff --git a/include/tpm-common.h b/include/tpm-common.h
index b2c5404430f..1ba81386ce1 100644
--- a/include/tpm-common.h
+++ b/include/tpm-common.h
@@ -94,7 +94,7 @@ struct tpm_ops {
 	 * close().
 	 *
 	 * @dev:	Device to open
-	 * @return 0 ok OK, -ve on error
+	 * @return 0 ok OK, -EBUSY if already opened, other -ve on other error
 	 */
 	int (*open)(struct udevice *dev);
 
diff --git a/include/tpm-v1.h b/include/tpm-v1.h
index 33d53fb695e..60b71e2a4b6 100644
--- a/include/tpm-v1.h
+++ b/include/tpm-v1.h
@@ -591,4 +591,15 @@ u32 tpm_set_global_lock(struct udevice *dev);
  */
 u32 tpm1_resume(struct udevice *dev);
 
+/**
+ * tpm1_auto_start() - start up the TPM
+ *
+ * This does not do a self test.
+ *
+ * @dev		TPM device
+ * Return: TPM2_RC_SUCCESS, on success, or when the TPM returns
+ * TPM_INVALID_POSTINIT; TPM_FAILEDSELFTEST, if the TPM is in failure state
+ */
+u32 tpm1_auto_start(struct udevice *dev);
+
 #endif /* __TPM_V1_H */
diff --git a/include/tpm-v2.h b/include/tpm-v2.h
index 2df3dad5532..2b6980e441d 100644
--- a/include/tpm-v2.h
+++ b/include/tpm-v2.h
@@ -690,4 +690,20 @@ u32 tpm2_report_state(struct udevice *dev, uint vendor_cmd, uint vendor_subcmd,
 u32 tpm2_enable_nvcommits(struct udevice *dev, uint vendor_cmd,
 			  uint vendor_subcmd);
 
+/**
+ * tpm2_auto_start() - start up the TPM and perform selftests.
+ *                     If a testable function has not been tested and is
+ *                     requested the TPM2  will return TPM_RC_NEEDS_TEST.
+ *
+ * @param dev		TPM device
+ * Return: TPM2_RC_TESTING, if TPM2 self-test is in progress.
+ *         TPM2_RC_SUCCESS, if testing of all functions is complete without
+ *         functional failures.
+ *         TPM2_RC_FAILURE, if any test failed.
+ *         TPM2_RC_INITIALIZE, if the TPM has not gone through the Startup
+ *         sequence
+
+ */
+u32 tpm2_auto_start(struct udevice *dev);
+
 #endif /* __TPM_V2_H */
diff --git a/include/tpm_api.h b/include/tpm_api.h
index 8979d9d6df7..022a8bbaeca 100644
--- a/include/tpm_api.h
+++ b/include/tpm_api.h
@@ -331,4 +331,12 @@ static inline bool tpm_is_v2(struct udevice *dev)
 	return IS_ENABLED(CONFIG_TPM_V2) && tpm_get_version(dev) == TPM_V2;
 }
 
+/**
+ * tpm_auto_start() - start up the TPM and perform selftests
+ *
+ * @param dev		TPM device
+ * Return: return code of the operation (0 = success)
+ */
+u32 tpm_auto_start(struct udevice *dev);
+
 #endif /* __TPM_API_H */