--- /dev/null
+/*
+ * Copyright (c) 2014, STMicroelectronics International N.V.
+ * All rights reserved.
+ * Copyright (c) 2015, Linaro Limited
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef TEE_CLIENT_API_H
+#define TEE_CLIENT_API_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+/*
+ * Defines the number of available memory references in an open session or
+ * invoke command operation payload.
+ */
+#define TEEC_CONFIG_PAYLOAD_REF_COUNT 4
+
+/**
+ * Defines the maximum size of a single shared memory block, in bytes, of both
+ * API allocated and API registered memory. The size is currently set to
+ * 512 * kB (512 * 1024).
+ */
+#define TEEC_CONFIG_SHAREDMEM_MAX_SIZE 0x8000
+
+/**
+ * Flag constants indicating the type of parameters encoded inside the
+ * operation payload (TEEC_Operation), Type is uint32_t.
+ *
+ * TEEC_NONE The Parameter is not used
+ *
+ * TEEC_VALUE_INPUT The Parameter is a TEEC_Value tagged as input.
+ *
+ * TEEC_VALUE_OUTPUT The Parameter is a TEEC_Value tagged as output.
+ *
+ * TEEC_VALUE_INOUT The Parameter is a TEEC_Value tagged as both as
+ * input and output, i.e., for which both the
+ * behaviors of TEEC_VALUE_INPUT and
+ * TEEC_VALUE_OUTPUT apply.
+ *
+ * TEEC_MEMREF_TEMP_INPUT The Parameter is a TEEC_TempMemoryReference
+ * describing a region of memory which needs to be
+ * temporarily registered for the duration of the
+ * Operation and is tagged as input.
+ *
+ * TEEC_MEMREF_TEMP_OUTPUT Same as TEEC_MEMREF_TEMP_INPUT, but the Memory
+ * Reference is tagged as output. The
+ * Implementation may update the size field to
+ * reflect the required output size in some use
+ * cases.
+ *
+ * TEEC_MEMREF_TEMP_INOUT A Temporary Memory Reference tagged as both
+ * input and output, i.e., for which both the
+ * behaviors of TEEC_MEMREF_TEMP_INPUT and
+ * TEEC_MEMREF_TEMP_OUTPUT apply.
+ *
+ * TEEC_MEMREF_WHOLE The Parameter is a Registered Memory Reference
+ * that refers to the entirety of its parent Shared
+ * Memory block. The parameter structure is a
+ * TEEC_MemoryReference. In this structure, the
+ * Implementation MUST read only the parent field
+ * and MAY update the size field when the operation
+ * completes.
+ *
+ * TEEC_MEMREF_PARTIAL_INPUT A Registered Memory Reference structure that
+ * refers to a partial region of its parent Shared
+ * Memory block and is tagged as input.
+ *
+ * TEEC_MEMREF_PARTIAL_OUTPUT Registered Memory Reference structure that
+ * refers to a partial region of its parent Shared
+ * Memory block and is tagged as output.
+ *
+ * TEEC_MEMREF_PARTIAL_INOUT The Registered Memory Reference structure that
+ * refers to a partial region of its parent Shared
+ * Memory block and is tagged as both input and
+ * output, i.e., for which both the behaviors of
+ * TEEC_MEMREF_PARTIAL_INPUT and
+ * TEEC_MEMREF_PARTIAL_OUTPUT apply.
+ */
+#define TEEC_NONE 0x00000000
+#define TEEC_VALUE_INPUT 0x00000001
+#define TEEC_VALUE_OUTPUT 0x00000002
+#define TEEC_VALUE_INOUT 0x00000003
+#define TEEC_MEMREF_TEMP_INPUT 0x00000005
+#define TEEC_MEMREF_TEMP_OUTPUT 0x00000006
+#define TEEC_MEMREF_TEMP_INOUT 0x00000007
+#define TEEC_MEMREF_WHOLE 0x0000000C
+#define TEEC_MEMREF_PARTIAL_INPUT 0x0000000D
+#define TEEC_MEMREF_PARTIAL_OUTPUT 0x0000000E
+#define TEEC_MEMREF_PARTIAL_INOUT 0x0000000F
+
+/**
+ * Flag constants indicating the data transfer direction of memory in
+ * TEEC_Parameter. TEEC_MEM_INPUT signifies data transfer direction from the
+ * client application to the TEE. TEEC_MEM_OUTPUT signifies data transfer
+ * direction from the TEE to the client application. Type is uint32_t.
+ *
+ * TEEC_MEM_INPUT The Shared Memory can carry data from the client
+ * application to the Trusted Application.
+ * TEEC_MEM_OUTPUT The Shared Memory can carry data from the Trusted
+ * Application to the client application.
+ */
+#define TEEC_MEM_INPUT 0x00000001
+#define TEEC_MEM_OUTPUT 0x00000002
+
+/**
+ * Return values. Type is TEEC_Result
+ *
+ * TEEC_SUCCESS The operation was successful.
+ * TEEC_ERROR_GENERIC Non-specific cause.
+ * TEEC_ERROR_ACCESS_DENIED Access privileges are not sufficient.
+ * TEEC_ERROR_CANCEL The operation was canceled.
+ * TEEC_ERROR_ACCESS_CONFLICT Concurrent accesses caused conflict.
+ * TEEC_ERROR_EXCESS_DATA Too much data for the requested operation was
+ * passed.
+ * TEEC_ERROR_BAD_FORMAT Input data was of invalid format.
+ * TEEC_ERROR_BAD_PARAMETERS Input parameters were invalid.
+ * TEEC_ERROR_BAD_STATE Operation is not valid in the current state.
+ * TEEC_ERROR_ITEM_NOT_FOUND The requested data item is not found.
+ * TEEC_ERROR_NOT_IMPLEMENTED The requested operation should exist but is not
+ * yet implemented.
+ * TEEC_ERROR_NOT_SUPPORTED The requested operation is valid but is not
+ * supported in this implementation.
+ * TEEC_ERROR_NO_DATA Expected data was missing.
+ * TEEC_ERROR_OUT_OF_MEMORY System ran out of resources.
+ * TEEC_ERROR_BUSY The system is busy working on something else.
+ * TEEC_ERROR_COMMUNICATION Communication with a remote party failed.
+ * TEEC_ERROR_SECURITY A security fault was detected.
+ * TEEC_ERROR_SHORT_BUFFER The supplied buffer is too short for the
+ * generated output.
+ * TEEC_ERROR_TARGET_DEAD Trusted Application has panicked
+ * during the operation.
+ */
+
+/**
+ * Standard defined error codes.
+ */
+#define TEEC_SUCCESS 0x00000000
+#define TEEC_ERROR_GENERIC 0xFFFF0000
+#define TEEC_ERROR_ACCESS_DENIED 0xFFFF0001
+#define TEEC_ERROR_CANCEL 0xFFFF0002
+#define TEEC_ERROR_ACCESS_CONFLICT 0xFFFF0003
+#define TEEC_ERROR_EXCESS_DATA 0xFFFF0004
+#define TEEC_ERROR_BAD_FORMAT 0xFFFF0005
+#define TEEC_ERROR_BAD_PARAMETERS 0xFFFF0006
+#define TEEC_ERROR_BAD_STATE 0xFFFF0007
+#define TEEC_ERROR_ITEM_NOT_FOUND 0xFFFF0008
+#define TEEC_ERROR_NOT_IMPLEMENTED 0xFFFF0009
+#define TEEC_ERROR_NOT_SUPPORTED 0xFFFF000A
+#define TEEC_ERROR_NO_DATA 0xFFFF000B
+#define TEEC_ERROR_OUT_OF_MEMORY 0xFFFF000C
+#define TEEC_ERROR_BUSY 0xFFFF000D
+#define TEEC_ERROR_COMMUNICATION 0xFFFF000E
+#define TEEC_ERROR_SECURITY 0xFFFF000F
+#define TEEC_ERROR_SHORT_BUFFER 0xFFFF0010
+#define TEEC_ERROR_EXTERNAL_CANCEL 0xFFFF0011
+#define TEEC_ERROR_TARGET_DEAD 0xFFFF3024
+
+/**
+ * Function error origins, of type TEEC_ErrorOrigin. These indicate where in
+ * the software stack a particular return value originates from.
+ *
+ * TEEC_ORIGIN_API The error originated within the TEE Client API
+ * implementation.
+ * TEEC_ORIGIN_COMMS The error originated within the underlying
+ * communications stack linking the rich OS with
+ * the TEE.
+ * TEEC_ORIGIN_TEE The error originated within the common TEE code.
+ * TEEC_ORIGIN_TRUSTED_APP The error originated within the Trusted Application
+ * code.
+ */
+#define TEEC_ORIGIN_API 0x00000001
+#define TEEC_ORIGIN_COMMS 0x00000002
+#define TEEC_ORIGIN_TEE 0x00000003
+#define TEEC_ORIGIN_TRUSTED_APP 0x00000004
+
+/**
+ * Session login methods, for use in TEEC_OpenSession() as parameter
+ * connectionMethod. Type is uint32_t.
+ *
+ * TEEC_LOGIN_PUBLIC No login data is provided.
+ * TEEC_LOGIN_USER Login data about the user running the Client
+ * Application process is provided.
+ * TEEC_LOGIN_GROUP Login data about the group running the Client
+ * Application process is provided.
+ * TEEC_LOGIN_APPLICATION Login data about the running Client Application
+ * itself is provided.
+ * TEEC_LOGIN_USER_APPLICATION Login data about the user and the running
+ * Client Application itself is provided.
+ * TEEC_LOGIN_GROUP_APPLICATION Login data about the group and the running
+ * Client Application itself is provided.
+ */
+#define TEEC_LOGIN_PUBLIC 0x00000000
+#define TEEC_LOGIN_USER 0x00000001
+#define TEEC_LOGIN_GROUP 0x00000002
+#define TEEC_LOGIN_APPLICATION 0x00000004
+#define TEEC_LOGIN_USER_APPLICATION 0x00000005
+#define TEEC_LOGIN_GROUP_APPLICATION 0x00000006
+
+/**
+ * Encode the paramTypes according to the supplied types.
+ *
+ * @param p0 The first param type.
+ * @param p1 The second param type.
+ * @param p2 The third param type.
+ * @param p3 The fourth param type.
+ */
+#define TEEC_PARAM_TYPES(p0, p1, p2, p3) \
+ ((p0) | ((p1) << 4) | ((p2) << 8) | ((p3) << 12))
+
+/**
+ * Get the i_th param type from the paramType.
+ *
+ * @param p The paramType.
+ * @param i The i-th parameter to get the type for.
+ */
+#define TEEC_PARAM_TYPE_GET(p, i) (((p) >> (i * 4)) & 0xF)
+
+typedef uint32_t TEEC_Result;
+
+/**
+ * struct TEEC_Context - Represents a connection between a client application
+ * and a TEE.
+ */
+typedef struct {
+ /* Implementation defined */
+ int fd;
+} TEEC_Context;
+
+/**
+ * This type contains a Universally Unique Resource Identifier (UUID) type as
+ * defined in RFC4122. These UUID values are used to identify Trusted
+ * Applications.
+ */
+typedef struct {
+ uint32_t timeLow;
+ uint16_t timeMid;
+ uint16_t timeHiAndVersion;
+ uint8_t clockSeqAndNode[8];
+} TEEC_UUID;
+
+/**
+ * struct TEEC_SharedMemory - Memory to transfer data between a client
+ * application and trusted code.
+ *
+ * @param buffer The memory buffer which is to be, or has been, shared
+ * with the TEE.
+ * @param size The size, in bytes, of the memory buffer.
+ * @param flags Bit-vector which holds properties of buffer.
+ * The bit-vector can contain either or both of the
+ * TEEC_MEM_INPUT and TEEC_MEM_OUTPUT flags.
+ *
+ * A shared memory block is a region of memory allocated in the context of the
+ * client application memory space that can be used to transfer data between
+ * that client application and a trusted application. The user of this struct
+ * is responsible to populate the buffer pointer.
+ */
+typedef struct {
+ void *buffer;
+ size_t size;
+ uint32_t flags;
+ /*
+ * Implementation-Defined
+ */
+ int id;
+ size_t alloced_size;
+ void *shadow_buffer;
+ int registered_fd;
+} TEEC_SharedMemory;
+
+/**
+ * struct TEEC_TempMemoryReference - Temporary memory to transfer data between
+ * a client application and trusted code, only used for the duration of the
+ * operation.
+ *
+ * @param buffer The memory buffer which is to be, or has been shared with
+ * the TEE.
+ * @param size The size, in bytes, of the memory buffer.
+ *
+ * A memory buffer that is registered temporarily for the duration of the
+ * operation to be called.
+ */
+typedef struct {
+ void *buffer;
+ size_t size;
+} TEEC_TempMemoryReference;
+
+/**
+ * struct TEEC_RegisteredMemoryReference - use a pre-registered or
+ * pre-allocated shared memory block of memory to transfer data between
+ * a client application and trusted code.
+ *
+ * @param parent Points to a shared memory structure. The memory reference
+ * may utilize the whole shared memory or only a part of it.
+ * Must not be NULL
+ *
+ * @param size The size, in bytes, of the memory buffer.
+ *
+ * @param offset The offset, in bytes, of the referenced memory region from
+ * the start of the shared memory block.
+ *
+ */
+typedef struct {
+ TEEC_SharedMemory *parent;
+ size_t size;
+ size_t offset;
+} TEEC_RegisteredMemoryReference;
+
+/**
+ * struct TEEC_Value - Small raw data container
+ *
+ * Instead of allocating a shared memory buffer this structure can be used
+ * to pass small raw data between a client application and trusted code.
+ *
+ * @param a The first integer value.
+ *
+ * @param b The second second value.
+ */
+typedef struct {
+ uint32_t a;
+ uint32_t b;
+} TEEC_Value;
+
+/**
+ * union TEEC_Parameter - Memory container to be used when passing data between
+ * client application and trusted code.
+ *
+ * Either the client uses a shared memory reference, parts of it or a small raw
+ * data container.
+ *
+ * @param tmpref A temporary memory reference only valid for the duration
+ * of the operation.
+ *
+ * @param memref The entire shared memory or parts of it.
+ *
+ * @param value The small raw data container to use
+ */
+typedef union {
+ TEEC_TempMemoryReference tmpref;
+ TEEC_RegisteredMemoryReference memref;
+ TEEC_Value value;
+} TEEC_Parameter;
+
+/**
+ * struct TEEC_Session - Represents a connection between a client application
+ * and a trusted application.
+ */
+typedef struct {
+ /* Implementation defined */
+ TEEC_Context *ctx;
+ uint32_t session_id;
+} TEEC_Session;
+
+/**
+ * struct TEEC_Operation - Holds information and memory references used in
+ * TEEC_InvokeCommand().
+ *
+ * @param started Client must initialize to zero if it needs to cancel
+ * an operation about to be performed.
+ * @param paramTypes Type of data passed. Use TEEC_PARAMS_TYPE macro to
+ * create the correct flags.
+ * 0 means TEEC_NONE is passed for all params.
+ * @param params Array of parameters of type TEEC_Parameter.
+ * @param session Internal pointer to the last session used by
+ * TEEC_InvokeCommand with this operation.
+ *
+ */
+typedef struct {
+ uint32_t started;
+ uint32_t paramTypes;
+ TEEC_Parameter params[TEEC_CONFIG_PAYLOAD_REF_COUNT];
+ /* Implementation-Defined */
+ TEEC_Session *session;
+} TEEC_Operation;
+
+/**
+ * TEEC_InitializeContext() - Initializes a context holding connection
+ * information on the specific TEE, designated by the name string.
+
+ * @param name A zero-terminated string identifying the TEE to connect to.
+ * If name is set to NULL, the default TEE is connected to. NULL
+ * is the only supported value in this version of the API
+ * implementation.
+ *
+ * @param context The context structure which is to be initialized.
+ *
+ * @return TEEC_SUCCESS The initialization was successful.
+ * @return TEEC_Result Something failed.
+ */
+TEEC_Result TEEC_InitializeContext(const char *name, TEEC_Context *context);
+
+/**
+ * TEEC_FinalizeContext() - Destroys a context holding connection information
+ * on the specific TEE.
+ *
+ * This function destroys an initialized TEE context, closing the connection
+ * between the client application and the TEE. This function must only be
+ * called when all sessions related to this TEE context have been closed and
+ * all shared memory blocks have been released.
+ *
+ * @param context The context to be destroyed.
+ */
+void TEEC_FinalizeContext(TEEC_Context *context);
+
+/**
+ * TEEC_OpenSession() - Opens a new session with the specified trusted
+ * application.
+ *
+ * @param context The initialized TEE context structure in which
+ * scope to open the session.
+ * @param session The session to initialize.
+ * @param destination A structure identifying the trusted application
+ * with which to open a session.
+ *
+ * @param connectionMethod The connection method to use.
+ * @param connectionData Any data necessary to connect with the chosen
+ * connection method. Not supported, should be set to
+ * NULL.
+ * @param operation An operation structure to use in the session. May
+ * be set to NULL to signify no operation structure
+ * needed.
+ *
+ * @param returnOrigin A parameter which will hold the error origin if
+ * this function returns any value other than
+ * TEEC_SUCCESS.
+ *
+ * @return TEEC_SUCCESS OpenSession successfully opened a new session.
+ * @return TEEC_Result Something failed.
+ *
+ */
+TEEC_Result TEEC_OpenSession(TEEC_Context *context,
+ TEEC_Session *session,
+ const TEEC_UUID *destination,
+ uint32_t connectionMethod,
+ const void *connectionData,
+ TEEC_Operation *operation,
+ uint32_t *returnOrigin);
+
+/**
+ * TEEC_CloseSession() - Closes the session which has been opened with the
+ * specific trusted application.
+ *
+ * @param session The opened session to close.
+ */
+void TEEC_CloseSession(TEEC_Session *session);
+
+/**
+ * TEEC_InvokeCommand() - Executes a command in the specified trusted
+ * application.
+ *
+ * @param session A handle to an open connection to the trusted
+ * application.
+ * @param commandID Identifier of the command in the trusted application
+ * to invoke.
+ * @param operation An operation structure to use in the invoke command.
+ * May be set to NULL to signify no operation structure
+ * needed.
+ * @param returnOrigin A parameter which will hold the error origin if this
+ * function returns any value other than TEEC_SUCCESS.
+ *
+ * @return TEEC_SUCCESS OpenSession successfully opened a new session.
+ * @return TEEC_Result Something failed.
+ */
+TEEC_Result TEEC_InvokeCommand(TEEC_Session *session,
+ uint32_t commandID,
+ TEEC_Operation *operation,
+ uint32_t *returnOrigin);
+
+/**
+ * TEEC_RegisterSharedMemory() - Register a block of existing memory as a
+ * shared block within the scope of the specified context.
+ *
+ * @param context The initialized TEE context structure in which scope to
+ * open the session.
+ * @param sharedMem pointer to the shared memory structure to register.
+ *
+ * @return TEEC_SUCCESS The registration was successful.
+ * @return TEEC_ERROR_OUT_OF_MEMORY Memory exhaustion.
+ * @return TEEC_Result Something failed.
+ */
+TEEC_Result TEEC_RegisterSharedMemory(TEEC_Context *context,
+ TEEC_SharedMemory *sharedMem);
+
+/**
+ * TEEC_AllocateSharedMemory() - Allocate shared memory for TEE.
+ *
+ * @param context The initialized TEE context structure in which scope to
+ * open the session.
+ * @param sharedMem Pointer to the allocated shared memory.
+ *
+ * @return TEEC_SUCCESS The registration was successful.
+ * @return TEEC_ERROR_OUT_OF_MEMORY Memory exhaustion.
+ * @return TEEC_Result Something failed.
+ */
+TEEC_Result TEEC_AllocateSharedMemory(TEEC_Context *context,
+ TEEC_SharedMemory *sharedMem);
+
+/**
+ * TEEC_ReleaseSharedMemory() - Free or deregister the shared memory.
+ *
+ * @param sharedMem Pointer to the shared memory to be freed.
+ */
+void TEEC_ReleaseSharedMemory(TEEC_SharedMemory *sharedMemory);
+
+/**
+ * TEEC_RequestCancellation() - Request the cancellation of a pending open
+ * session or command invocation.
+ *
+ * @param operation Pointer to an operation previously passed to open session
+ * or invoke.
+ */
+void TEEC_RequestCancellation(TEEC_Operation *operation);
+
+#endif
projects / platform / core / security / tef-dummy.git / commitdiff