Adding tee driver to kernel.

Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Change-Id: I17069b327d6a07963a3a483b70b5439655dccf24
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/2540
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>

1 files changed, 106 insertions, 0 deletions

diff --git a/include/linux/tee.h b/include/linux/tee.h
new file mode 100644
index 00000000000..67da71e010b
--- /dev/null
+++ b/include/linux/tee.h
@@ -0,0 +1,106 @@
+/*
+ * TEE driver for Trust Zone enabled CPUs.
+ *
+ * Copyright (C) ST-Ericsson SA 2010
+ * Author: Shujuan Chen <shujuan.chen@stericsson.com>
+ * Author: Martin Hovang <martin.xm.hovang@stericsson.com
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#ifndef TEE_SERVICE_H
+#define TEE_SERVICE_H
+
+/**
+ * tee_cmd id values
+ */
+#define TEED_OPEN_SESSION    0x00000000
+#define TEED_CLOSE_SESSION   0x00000001
+#define TEED_INVOKE          0x00000002
+
+/**
+ * tee_retval id values
+ */
+#define TEED_SUCCESS                0x00000000
+#define TEED_ERROR_GENERIC          0xFFFF0000
+#define TEED_ERROR_ACCESS_DENIED    0xFFFF0001
+#define TEED_ERROR_CANCEL           0xFFFF0002
+#define TEED_ERROR_ACCESS_CONFLICT  0xFFFF0003
+#define TEED_ERROR_EXCESS_DATA      0xFFFF0004
+#define TEED_ERROR_BAD_FORMAT       0xFFFF0005
+#define TEED_ERROR_BAD_PARAMETERS   0xFFFF0006
+#define TEED_ERROR_BAD_STATE        0xFFFF0007
+#define TEED_ERROR_ITEM_NOT_FOUND   0xFFFF0008
+#define TEED_ERROR_NOT_IMPLEMENTED  0xFFFF0009
+#define TEED_ERROR_NOT_SUPPORTED    0xFFFF000A
+#define TEED_ERROR_NO_DATA          0xFFFF000B
+#define TEED_ERROR_OUT_OF_MEMORY    0xFFFF000C
+#define TEED_ERROR_BUSY             0xFFFF000D
+#define TEED_ERROR_COMMUNICATION    0xFFFF000E
+#define TEED_ERROR_SECURITY         0xFFFF000F
+#define TEED_ERROR_SHORT_BUFFER     0xFFFF0010
+
+/**
+ * TEE origin codes
+ */
+#define TEED_ORIGIN_DRIVER          0x00000002
+#define TEED_ORIGIN_TEE             0x00000003
+#define TEED_ORIGIN_TEE_APPLICATION 0x00000004
+
+#define TEE_UUID_CLOCK_SIZE 8
+
+#define TEEC_CONFIG_PAYLOAD_REF_COUNT 4
+
+/* Different naming convention to comply with
+   Global Platforms TEE Client API spec */
+struct tee_uuid {
+	uint32_t timeLow;
+	uint16_t timeMid;
+	uint16_t timeHiAndVersion;
+	uint8_t clockSeqAndNode[TEE_UUID_CLOCK_SIZE];
+};
+
+struct tee_sharedmemory {
+	void *buffer;
+	size_t size;
+	uint32_t flags;
+};
+
+struct tee_operation {
+	struct tee_sharedmemory shm[TEEC_CONFIG_PAYLOAD_REF_COUNT];
+	uint32_t flags;
+};
+
+struct tee_session {
+	uint32_t state;
+	uint32_t err;
+	uint32_t origin;
+	uint32_t id;
+	void *ta;
+	struct tee_uuid *uuid;
+	unsigned int cmd;
+	unsigned int ta_size;
+	struct tee_operation *idata;
+	struct mutex *sync;
+};
+
+struct tee_write {
+	struct tee_uuid *uuid;
+	unsigned int id;
+	unsigned int cmd;
+	void *ta;
+	size_t ta_size;
+	void *inData;
+	size_t inSize;
+};
+
+struct tee_read {
+	unsigned int id;	/* return value */
+	unsigned int origin;	/* error origin */
+};
+
+/**
+ * This function handles the function calls to trusted applications.
+ */
+int call_sec_world(struct tee_session *ts);
+
+#endif