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/*
* 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
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