Skip to content
Permalink
efd3670930
Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
Go to file
 
 
Cannot retrieve contributors at this time
346 lines (286 sloc) 8.24 KB
// SPDX-License-Identifier: BSD-2-Clause
/*
* Copyright (c) 2014, STMicroelectronics International N.V.
* 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.
*/
#include <stdlib.h>
#include <string.h>
#include <tee_api.h>
#include <utee_syscalls.h>
#include <user_ta_header.h>
#include "tee_user_mem.h"
//#include "tee_api_private.h"
#include "utee_types.h"
static const void *tee_api_instance_data;
/* System API - Internal Client API */
void __utee_from_param(struct utee_params *up, uint32_t param_types,
const TEE_Param params[TEE_NUM_PARAMS])
{
size_t n;
up->types = param_types;
for (n = 0; n < TEE_NUM_PARAMS; n++) {
switch (TEE_PARAM_TYPE_GET(param_types, n)) {
case TEE_PARAM_TYPE_VALUE_INPUT:
case TEE_PARAM_TYPE_VALUE_OUTPUT:
case TEE_PARAM_TYPE_VALUE_INOUT:
up->vals[n * 2] = params[n].value.a;
up->vals[n * 2 + 1] = params[n].value.b;
break;
case TEE_PARAM_TYPE_MEMREF_INPUT:
case TEE_PARAM_TYPE_MEMREF_OUTPUT:
case TEE_PARAM_TYPE_MEMREF_INOUT:
up->vals[n * 2] = (uintptr_t)params[n].memref.buffer;
up->vals[n * 2 + 1] = params[n].memref.size;
break;
default:
up->vals[n * 2] = 0;
up->vals[n * 2 + 1] = 0;
break;
}
}
}
void __utee_to_param(TEE_Param params[TEE_NUM_PARAMS],
uint32_t *param_types, const struct utee_params *up)
{
size_t n;
uint32_t types = up->types;
for (n = 0; n < TEE_NUM_PARAMS; n++) {
uintptr_t a = up->vals[n * 2];
uintptr_t b = up->vals[n * 2 + 1];
switch (TEE_PARAM_TYPE_GET(types, n)) {
case TEE_PARAM_TYPE_VALUE_INPUT:
case TEE_PARAM_TYPE_VALUE_OUTPUT:
case TEE_PARAM_TYPE_VALUE_INOUT:
params[n].value.a = a;
params[n].value.b = b;
break;
case TEE_PARAM_TYPE_MEMREF_INPUT:
case TEE_PARAM_TYPE_MEMREF_OUTPUT:
case TEE_PARAM_TYPE_MEMREF_INOUT:
params[n].memref.buffer = (void *)a;
params[n].memref.size = b;
break;
default:
break;
}
}
if (param_types)
*param_types = types;
}
TEE_Result TEE_OpenTASession(const TEE_UUID *destination,
uint32_t cancellationRequestTimeout,
uint32_t paramTypes,
TEE_Param params[TEE_NUM_PARAMS],
TEE_TASessionHandle *session,
uint32_t *returnOrigin)
{
TEE_Result res;
struct utee_params up;
uint32_t s;
__utee_from_param(&up, paramTypes, params);
res = utee_open_ta_session(destination, cancellationRequestTimeout,
&up, &s, returnOrigin);
__utee_to_param(params, NULL, &up);
/*
* Specification says that *session must hold TEE_HANDLE_NULL is
* TEE_SUCCESS isn't returned. Set it here explicitly in case
* the syscall fails before out parameters has been updated.
*/
if (res != TEE_SUCCESS)
s = TEE_HANDLE_NULL;
*session = (TEE_TASessionHandle)(uintptr_t)s;
return res;
}
void TEE_CloseTASession(TEE_TASessionHandle session)
{
if (session != TEE_HANDLE_NULL) {
TEE_Result res = utee_close_ta_session((uintptr_t)session);
if (res != TEE_SUCCESS)
TEE_Panic(res);
}
}
TEE_Result TEE_InvokeTACommand(TEE_TASessionHandle session,
uint32_t cancellationRequestTimeout,
uint32_t commandID, uint32_t paramTypes,
TEE_Param params[TEE_NUM_PARAMS],
uint32_t *returnOrigin)
{
TEE_Result res;
uint32_t ret_origin;
struct utee_params up;
__utee_from_param(&up, paramTypes, params);
res = utee_invoke_ta_command((uintptr_t)session,
cancellationRequestTimeout,
commandID, &up, &ret_origin);
__utee_to_param(params, NULL, &up);
if (returnOrigin != NULL)
*returnOrigin = ret_origin;
if (ret_origin == TEE_ORIGIN_TRUSTED_APP)
return res;
if (res != TEE_SUCCESS &&
res != TEE_ERROR_OUT_OF_MEMORY &&
res != TEE_ERROR_TARGET_DEAD)
TEE_Panic(res);
return res;
}
/* System API - Cancellations */
bool TEE_GetCancellationFlag(void)
{
uint32_t c;
TEE_Result res = utee_get_cancellation_flag(&c);
if (res != TEE_SUCCESS)
c = 0;
return !!c;
}
bool TEE_UnmaskCancellation(void)
{
uint32_t old_mask;
TEE_Result res = utee_unmask_cancellation(&old_mask);
if (res != TEE_SUCCESS)
TEE_Panic(res);
return !!old_mask;
}
bool TEE_MaskCancellation(void)
{
uint32_t old_mask;
TEE_Result res = utee_mask_cancellation(&old_mask);
if (res != TEE_SUCCESS)
TEE_Panic(res);
return !!old_mask;
}
/* System API - Memory Management */
TEE_Result TEE_CheckMemoryAccessRights(uint32_t accessFlags, void *buffer,
uint32_t size)
{
TEE_Result res;
if (size == 0)
return TEE_SUCCESS;
/* Check access rights against memory mapping */
res = utee_check_access_rights(accessFlags, buffer, size);
if (res != TEE_SUCCESS)
goto out;
/*
* Check access rights against input parameters
* Previous legacy code was removed and will need to be restored
*/
res = TEE_SUCCESS;
out:
return res;
}
void TEE_SetInstanceData(const void *instanceData)
{
tee_api_instance_data = instanceData;
}
const void *TEE_GetInstanceData(void)
{
return tee_api_instance_data;
}
void *TEE_MemMove(void *dest, const void *src, uint32_t size)
{
return memmove(dest, src, size);
}
int32_t TEE_MemCompare(const void *buffer1, const void *buffer2, uint32_t size)
{
return memcmp(buffer1, buffer2, size);
}
void *TEE_MemFill(void *buff, uint32_t x, uint32_t size)
{
return memset(buff, x, size);
}
/* Date & Time API */
void TEE_GetSystemTime(TEE_Time *time)
{
TEE_Result res = utee_get_time(UTEE_TIME_CAT_SYSTEM, time);
if (res != TEE_SUCCESS)
TEE_Panic(res);
}
TEE_Result TEE_Wait(uint32_t timeout)
{
TEE_Result res = utee_wait(timeout);
if (res != TEE_SUCCESS && res != TEE_ERROR_CANCEL)
TEE_Panic(res);
return res;
}
TEE_Result TEE_GetTAPersistentTime(TEE_Time *time)
{
TEE_Result res;
res = utee_get_time(UTEE_TIME_CAT_TA_PERSISTENT, time);
if (res != TEE_SUCCESS && res != TEE_ERROR_OVERFLOW) {
time->seconds = 0;
time->millis = 0;
}
if (res != TEE_SUCCESS &&
res != TEE_ERROR_TIME_NOT_SET &&
res != TEE_ERROR_TIME_NEEDS_RESET &&
res != TEE_ERROR_OVERFLOW &&
res != TEE_ERROR_OUT_OF_MEMORY)
TEE_Panic(res);
return res;
}
TEE_Result TEE_SetTAPersistentTime(const TEE_Time *time)
{
TEE_Result res;
res = utee_set_ta_time(time);
if (res != TEE_SUCCESS &&
res != TEE_ERROR_OUT_OF_MEMORY &&
res != TEE_ERROR_STORAGE_NO_SPACE)
TEE_Panic(res);
return res;
}
void TEE_GetREETime(TEE_Time *time)
{
TEE_Result res = utee_get_time(UTEE_TIME_CAT_REE, time);
if (res != TEE_SUCCESS)
TEE_Panic(res);
}
void *TEE_Malloc(uint32_t len, uint32_t hint)
{
return tee_user_mem_alloc(len, hint);
}
void *TEE_Realloc(const void *buffer, uint32_t newSize)
{
/*
* GP TEE Internal API specifies newSize as 'uint32_t'.
* use unsigned 'size_t' type. it is at least 32bit!
*/
return tee_user_mem_realloc((void *)buffer, (size_t) newSize);
}
void TEE_Free(void *buffer)
{
tee_user_mem_free(buffer);
}
/* Cache maintenance support (TA requires the CACHE_MAINTENANCE property) */
TEE_Result TEE_CacheClean(char *buf, size_t len)
{
return utee_cache_operation(buf, len, TEE_CACHECLEAN);
}
TEE_Result TEE_CacheFlush(char *buf, size_t len)
{
return utee_cache_operation(buf, len, TEE_CACHEFLUSH);
}
TEE_Result TEE_CacheInvalidate(char *buf, size_t len)
{
return utee_cache_operation(buf, len, TEE_CACHEINVALIDATE);
}