1 files changed, 46 insertions, 0 deletions
diff --git a/src/include/usr/i2c/tpmddif.H b/src/include/usr/i2c/tpmddif.H
index 0a8233eda..08fbebfc0 100644
--- a/src/include/usr/i2c/tpmddif.H
+++ b/src/include/usr/i2c/tpmddif.H
@@ -51,6 +51,35 @@ enum tpm_op_types_t
 };
 
 /**
+* @brief Enumerations to describe the type of devices to be accessed.
+*/
+enum tpm_addr_size_t
+{
+    ONE_BYTE_ADDR   = 1,
+    TWO_BYTE_ADDR   = 2,
+    LAST_DEVICE_TYPE
+};
+
+/**
+ * @brief Structure of common parameters needed by different parts of
+ *      the code.
+ */
+struct tpm_info_t
+{
+    tpm_op_types_t operation;    ///< TPM operation to perform
+    TARGETING::EntityPath i2cMasterPath; ///< I2C Master path
+    TARGETING::Target * i2cTarget; ///< I2C Target
+
+    uint8_t port;               ///< I2C Master port
+    uint8_t engine;             ///< I2C Master engine
+    uint8_t chip;               ///< Chip target, primary/backup
+    uint8_t tpmEnabled;         ///< TPM attribute defined as available
+    uint8_t devAddr;            ///< I2C Address
+    size_t  offset;             ///< TPM Device register offset
+    tpm_addr_size_t addrSize;   ///< I2C Addr size
+};
+
+/**
  *
  * @brief Determine if targeted TPM is present and enabled in the system
  *
@@ -63,6 +92,23 @@ enum tpm_op_types_t
 bool tpmPresence ( TARGETING::Target * i_target,
                    tpm_chip_types_t i_chip );
 
+/**
+ * @brief this function will read all of the associated attributes needed
+ *      to access the intended TPM.  These attributes will be used to
+ *      determine the type of I2C device as well as how to address it via
+ *      the I2C device driver.
+ *
+ * @param[in] i_target target node.
+ *
+ * @param[in/out] io_tpmInfo The structure that will contain the attribute data
+ *      read from the target device.  Chip field must be set
+ *
+ * @return errlHndl_t NULL if successful, otherwise a pointer to the
+ *      error log.
+ */
+errlHndl_t tpmReadAttributes ( TARGETING::Target * i_target,
+                               tpm_info_t & io_tpmInfo );
+
 
 };  // end namespace TPMDD