162 lines
7.9 KiB
C
162 lines
7.9 KiB
C
/**************************************************************************/
|
|
/* */
|
|
/* Copyright (c) Microsoft Corporation. All rights reserved. */
|
|
/* */
|
|
/* This software is licensed under the Microsoft Software License */
|
|
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
|
|
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
|
|
/* and in the root directory of this software. */
|
|
/* */
|
|
/**************************************************************************/
|
|
|
|
|
|
/**************************************************************************/
|
|
/**************************************************************************/
|
|
/** */
|
|
/** ThreadX Component */
|
|
/** */
|
|
/** Initialize */
|
|
/** */
|
|
/**************************************************************************/
|
|
/**************************************************************************/
|
|
|
|
#define TX_SOURCE_CODE
|
|
|
|
|
|
/* Include necessary system files. */
|
|
|
|
#include "tx_api.h"
|
|
#include "tx_initialize.h"
|
|
#include "tx_thread.h"
|
|
#include "tx_timer.h"
|
|
|
|
#if defined(TX_ENABLE_EXECUTION_CHANGE_NOTIFY) || defined(TX_EXECUTION_PROFILE_ENABLE)
|
|
extern VOID _tx_execution_initialize(VOID);
|
|
#endif
|
|
|
|
/* Define any port-specific scheduling data structures. */
|
|
|
|
TX_PORT_SPECIFIC_DATA
|
|
|
|
|
|
#ifdef TX_SAFETY_CRITICAL
|
|
TX_SAFETY_CRITICAL_EXCEPTION_HANDLER
|
|
#endif
|
|
|
|
|
|
/**************************************************************************/
|
|
/* */
|
|
/* FUNCTION RELEASE */
|
|
/* */
|
|
/* _tx_initialize_kernel_enter PORTABLE C */
|
|
/* 6.1.11 */
|
|
/* AUTHOR */
|
|
/* */
|
|
/* William E. Lamie, Microsoft Corporation */
|
|
/* */
|
|
/* DESCRIPTION */
|
|
/* */
|
|
/* This function is the first ThreadX function called during */
|
|
/* initialization. It is called from the application's "main()" */
|
|
/* function. It is important to note that this routine never */
|
|
/* returns. The processing of this function is relatively simple: */
|
|
/* it calls several ThreadX initialization functions (if needed), */
|
|
/* calls the application define function, and then invokes the */
|
|
/* scheduler. */
|
|
/* */
|
|
/* INPUT */
|
|
/* */
|
|
/* None */
|
|
/* */
|
|
/* OUTPUT */
|
|
/* */
|
|
/* None */
|
|
/* */
|
|
/* CALLS */
|
|
/* */
|
|
/* _tx_initialize_low_level Low-level initialization */
|
|
/* _tx_initialize_high_level High-level initialization */
|
|
/* tx_application_define Application define function */
|
|
/* _tx_thread_scheduler ThreadX scheduling loop */
|
|
/* */
|
|
/* CALLED BY */
|
|
/* */
|
|
/* main Application main program */
|
|
/* */
|
|
/* RELEASE HISTORY */
|
|
/* */
|
|
/* DATE NAME DESCRIPTION */
|
|
/* */
|
|
/* 05-19-2020 William E. Lamie Initial Version 6.0 */
|
|
/* 09-30-2020 Yuxin Zhou Modified comment(s), */
|
|
/* resulting in version 6.1 */
|
|
/* 04-25-2022 Scott Larson Modified comment(s), */
|
|
/* added EPK initialization, */
|
|
/* resulting in version 6.1.11 */
|
|
/* */
|
|
/**************************************************************************/
|
|
VOID _tx_initialize_kernel_enter(VOID)
|
|
{
|
|
|
|
/* Determine if the compiler has pre-initialized ThreadX. */
|
|
if (_tx_thread_system_state != TX_INITIALIZE_ALMOST_DONE)
|
|
{
|
|
|
|
/* No, the initialization still needs to take place. */
|
|
|
|
/* Ensure that the system state variable is set to indicate
|
|
initialization is in progress. Note that this variable is
|
|
later used to represent interrupt nesting. */
|
|
_tx_thread_system_state = TX_INITIALIZE_IN_PROGRESS;
|
|
|
|
/* Call any port specific preprocessing. */
|
|
TX_PORT_SPECIFIC_PRE_INITIALIZATION
|
|
|
|
/* Invoke the low-level initialization to handle all processor specific
|
|
initialization issues. */
|
|
_tx_initialize_low_level();
|
|
|
|
/* Invoke the high-level initialization to exercise all of the
|
|
ThreadX components and the application's initialization
|
|
function. */
|
|
_tx_initialize_high_level();
|
|
|
|
/* Call any port specific post-processing. */
|
|
TX_PORT_SPECIFIC_POST_INITIALIZATION
|
|
}
|
|
|
|
/* Optional processing extension. */
|
|
TX_INITIALIZE_KERNEL_ENTER_EXTENSION
|
|
|
|
/* Ensure that the system state variable is set to indicate
|
|
initialization is in progress. Note that this variable is
|
|
later used to represent interrupt nesting. */
|
|
_tx_thread_system_state = TX_INITIALIZE_IN_PROGRESS;
|
|
|
|
/* Call the application provided initialization function. Pass the
|
|
first available memory address to it. */
|
|
tx_application_define(_tx_initialize_unused_memory);
|
|
|
|
/* Set the system state in preparation for entering the thread
|
|
scheduler. */
|
|
_tx_thread_system_state = TX_INITIALIZE_IS_FINISHED;
|
|
|
|
/* Call any port specific pre-scheduler processing. */
|
|
TX_PORT_SPECIFIC_PRE_SCHEDULER_INITIALIZATION
|
|
|
|
#if defined(TX_ENABLE_EXECUTION_CHANGE_NOTIFY) || defined(TX_EXECUTION_PROFILE_ENABLE)
|
|
/* Initialize Execution Profile Kit. */
|
|
_tx_execution_initialize();
|
|
#endif
|
|
|
|
/* Enter the scheduling loop to start executing threads! */
|
|
_tx_thread_schedule();
|
|
|
|
#ifdef TX_SAFETY_CRITICAL
|
|
|
|
/* If we ever get here, raise safety critical exception. */
|
|
TX_SAFETY_CRITICAL_EXCEPTION(__FILE__, __LINE__, 0);
|
|
#endif
|
|
}
|
|
|