Add Infineon v05 TPM driver

drivers/tpm/slb9635_i2c/tddl.c

+/*******************************************************************************
+ **
+ ** FILENAME:      $Id: i2c_tddl.c 59 2010-10-20 10:04:48Z hkr $
+ ** COPYRIGHT:     Infineon Technologies
+ ** DESCRIPTION:   Infineon_TPM-I2C - TDD supporting FW 2010.
+ ** CREATION DATE: 2010/11/10
+ ** LAST CHANGE:   $Date: 2010-10-20 12:04:48 +0200 (Wed, 20 Oct 2010) $
+ **                $Author$
+ ** VERSION:       $Revision: 59 $
+ **
+ ******************************************************************************/
+#include <exports.h>
+
+#include "tddl.h"
+#include "compatibility.h"
+#include "tpm.h"
+
+/* buffer supporting tpm_transmit */
+#define TDDL_BUFSIZE 4096
+uint8_t tmpbuf[TDDL_BUFSIZE];
+
+/* Open connection to TPM */
+TDDL_RESULT TDDL_Open(void)
+{
+        dbg_printf("INFO: initialising I2C bus TDDL\n");
+        if (tpm_open() < 0)
+                return TDDL_E_FAIL;
+        else
+                return TDDL_SUCCESS;
+}
+
+/* Disconnect from the TPM */
+TDDL_RESULT TDDL_Close(void)
+{
+        tpm_close();
+        return TDDL_SUCCESS;
+}
+
+/* Send the TPM Application Protocol Data Unit (APDU) to the TPM and
+ * return the response APDU */
+TDDL_RESULT TDDL_TransmitData(uint8_t *pbTransmitBuf, uint32_t dwTransmitBufLen,
+                             uint8_t *pbReceiveBuf, uint32_t *pdwReceiveBufLen)
+{
+        int len;
+        uint32_t i;
+        TDDL_RESULT rc = TDDL_E_FAIL;
+
+        dbg_printf("--> xTDDL_TransmitData()\n");
+
+        dbg_printf("pbTransmitBuf = ");
+        for (i = 0; i < dwTransmitBufLen; i++)
+                dbg_printf("%02x ", pbTransmitBuf[i]);
+        dbg_printf("\n");
+
+        /* copy buffer to make sure transmit data may be overwritten */
+        memcpy(tmpbuf, pbTransmitBuf, dwTransmitBufLen);
+
+        /* do transmission */
+        len = tpm_transmit(tmpbuf, TDDL_BUFSIZE);
+
+        if (len >= 10) {
+                memcpy(pbReceiveBuf, tmpbuf, len);
+                dbg_printf("INFO: copied %d bytes into pbReceiveBuf\n", len);
+                rc = switch_endian32(&tmpbuf[TPM_RSP_RC_BYTE]);
+                *pdwReceiveBufLen = len;
+        } else {
+                dbg_printf("ERROR: tpm_transmit() returned %d\n", len);
+                *pdwReceiveBufLen = 0;
+        }
+
+        dbg_printf("pbReceiveBuf = ");
+        for (i = 0; i < (*pdwReceiveBufLen); i++)
+                dbg_printf("%02x ", pbReceiveBuf[i]);
+        dbg_printf("\n");
+
+        dbg_printf("<-- xTDDL_TransmitData()\n");
+
+        return rc;
+}
+
+/* Return the requested capability of the TPM or the driver */
+TDDL_RESULT TDDL_GetCapability(uint32_t dwCapArea, uint32_t dwSubCap,
+                              uint8_t *pbReceiveBuf, uint32_t *pdwReceiveBufLen)
+{
+        return TDDL_E_FAIL;
+}