Add Infineon v05 TPM driver

drivers/tpm/slb9635_i2c/tddl.c

Index: drivers/tpm/slb9635_i2c/tddl.c
diff --git a/drivers/tpm/slb9635_i2c/tddl.c b/drivers/tpm/slb9635_i2c/tddl.c
new file mode 100644
index 0000000000000000000000000000000000000000..0269635ea95789ec9a86d900e8104acaebfc39b8
--- /dev/null
+++ b/drivers/tpm/slb9635_i2c/tddl.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2011 Infineon Technologies
+ *
+ * Authors:
+ * Peter Huewe <huewe.external@infineon.com>
+ *
+ * description: Infineon_TPM-I2C - TDDL supporting FW 2010.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * Version: 2.1.1
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include <exports.h>
+
+#include "tddl.h"
+#include "tpm.h"
+
+/* buffer supporting tpm_transmit */
+uint8_t tmpbuf[TPM_BUFSIZE];
+
+/* Open connection to TPM */
+TDDL_RESULT TDDL_Open(uint32_t dev_addr)
+{
+	int rc;
+	dbg_printf("INFO: initialising TPM\n");
+	rc = tpm_open(dev_addr);
+	if (rc < 0) {
+		switch (rc) {
+			case -EBUSY:  return TDDL_E_ALREADY_OPENED;
+			case -ENODEV: return TDDL_E_COMPONENT_NOT_FOUND;
+		};
+		return TDDL_E_FAIL;
+	}
+	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, dwTransmitBufLen);
+
+	if (len >= 10) {
+		memcpy(pbReceiveBuf, tmpbuf, len);
+		dbg_printf("INFO: copied %d bytes into pbReceiveBuf\n", len);
+		*pdwReceiveBufLen = len;
+		rc = TDDL_SUCCESS;
+	} 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;
+}