openharmony_kernel_liteos_m/components/security/box/los_box.c

120 lines
4.2 KiB
C

/*
* Copyright (c) 2022-2022 Huawei Device Co., Ltd. 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.
*
* 3. Neither the name of the copyright holder nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior written
* permission.
*
* 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 "los_box.h"
#include "los_task.h"
#include "los_context.h"
#include "los_arch_context.h"
#include "los_debug.h"
static UserTaskCB g_UserTaskCBArray[LOSCFG_BASE_CORE_TSK_LIMIT] = { 0 };
static LosBoxCB g_boxCB[1];
VOID OsUserTaskInit(UINT32 taskID, UINTPTR entry, UINTPTR userArea, UINTPTR userSp)
{
LosTaskCB *taskCB = OS_TCB_FROM_TID(taskID);
taskCB->taskStatus |= OS_TASK_FLAG_USER_TASK;
HalUserTaskStackInit(taskCB->stackPointer, entry, userSp);
g_UserTaskCBArray[taskID].userArea = userArea;
g_UserTaskCBArray[taskID].userSp = userSp;
g_UserTaskCBArray[taskID].boxID = g_UserTaskCBArray[g_losTask.runTask->taskID].boxID;
}
VOID OsUserTaskDelete(UINT32 taskID)
{
(VOID)memset_s(&g_UserTaskCBArray[taskID], sizeof(UserTaskCB), 0, sizeof(UserTaskCB));
}
UserTaskCB *OsGetUserTaskCB(UINT32 taskID)
{
return &g_UserTaskCBArray[taskID];
}
static UINT32 BoxInit(VOID)
{
UINT32 count = sizeof(g_boxCB) / sizeof(LosBoxCB);
for (UINT32 i = 0; i < count; i++) {
LosBoxCB *box = &g_boxCB[i];
box->boxStackAddr = box->boxStartAddr + box->boxSize - box->boxStackSize;
}
return LOS_OK;
}
VOID OsBoxStart(VOID)
{
UINT32 ret, taskID;
UINT32 count = sizeof(g_boxCB) / sizeof(LosBoxCB);
TSK_INIT_PARAM_S taskInitParam = { 0 };
for (UINT32 i = 0; i < count; i++) {
LosBoxCB *box = &g_boxCB[i];
taskInitParam.pfnTaskEntry = (TSK_ENTRY_FUNC)box->boxStartAddr;
taskInitParam.uwStackSize = 0x1000;
taskInitParam.pcName = "BoxMainTask";
taskInitParam.usTaskPrio = LOSCFG_BOX_PRIO;
taskInitParam.uwResved = LOS_TASK_ATTR_JOINABLE;
ret = LOS_TaskCreateOnly(&taskID, &taskInitParam);
if (ret != LOS_OK) {
PRINT_ERR("Create box %u main task failed, Error 0x%x\n", i, ret);
return;
}
OsUserTaskInit(taskID, (UINTPTR)_ulibc_start, 0, box->boxStackAddr + box->boxStackSize);
g_UserTaskCBArray[taskID].boxID = i;
ret = LOS_TaskResume(taskID);
if (ret != LOS_OK) {
PRINT_ERR("Box(%u) resume task %u failed, Error 0x%x\n", i, taskID, ret);
return;
}
}
}
UINT32 LOS_BoxStart(VOID)
{
UINT32 ret, taskID;
TSK_INIT_PARAM_S taskInitParam = { 0 };
ret = BoxInit();
if (ret != LOS_OK) {
PRINT_ERR("Box init failed! Error 0x%x\n", ret);
return ret;
}
taskInitParam.pfnTaskEntry = (TSK_ENTRY_FUNC)OsBoxStart;
taskInitParam.uwStackSize = 0x1000;
taskInitParam.pcName = "BoxStart";
taskInitParam.usTaskPrio = LOSCFG_BOX_START_PRIO;
taskInitParam.uwResved = 0;
return LOS_TaskCreate(&taskID, &taskInitParam);
}