diff options
| author | Scott Larson <[email protected]> | 2020-08-07 16:56:45 -0700 |
|---|---|---|
| committer | Scott Larson <[email protected]> | 2020-08-07 16:56:45 -0700 |
| commit | 6f61053f2ac6cfa01a33b910401a61e63bca0972 (patch) | |
| tree | 7ba850077c3fb4d024c8f6d59609e94c6c627707 /common_smp/src/tx_initialize_kernel_enter.c | |
| parent | 49e3c27f3f140cd76147d85ccbb1eea31e09ee16 (diff) | |
add SMP, Modules, and more processor/tools releases
Diffstat (limited to 'common_smp/src/tx_initialize_kernel_enter.c')
| -rw-r--r-- | common_smp/src/tx_initialize_kernel_enter.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/common_smp/src/tx_initialize_kernel_enter.c b/common_smp/src/tx_initialize_kernel_enter.c new file mode 100644 index 00000000..990bea11 --- /dev/null +++ b/common_smp/src/tx_initialize_kernel_enter.c @@ -0,0 +1,188 @@ +/**************************************************************************/ +/* */ +/* 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 +#define TX_THREAD_SMP_SOURCE_CODE + + +/* Include necessary system files. */ + +#include "tx_api.h" +#include "tx_initialize.h" +#include "tx_thread.h" +#include "tx_timer.h" + + +/* 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 SMP */ +/* 6.0.1 */ +/* 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_thread_smp_high_level_initialize SMP initialization */ +/* _tx_thread_smp_current_state_set Set system state for all cores */ +/* _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 */ +/* */ +/* 06-30-2020 William E. Lamie Initial Version 6.0.1 */ +/* */ +/**************************************************************************/ +VOID _tx_initialize_kernel_enter(VOID) +{ + +ULONG other_core_status, i; + + + /* Determine if the compiler has pre-initialized ThreadX. */ + if (_tx_thread_system_state[0] != 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_smp_current_state_set(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(); + + /* Call the high-level SMP Initialization. */ + _tx_thread_smp_high_level_initialize(); + + /* 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[0] = 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); + + /* Call any port specific pre-scheduler processing. */ + TX_PORT_SPECIFIC_PRE_SCHEDULER_INITIALIZATION + + /* Now wait for all cores to become ready for scheduling. */ + do + { + + /* Release the other cores from initialization. */ + _tx_thread_smp_release_cores_flag = TX_TRUE; + + /* Add all the status together... Other cores must clear their system + state before they they are released. */ + other_core_status = ((ULONG) 0); + +#ifndef TX_THREAD_SMP_DYNAMIC_CORE_MAX + for (i = ((ULONG) 1); i < ((ULONG) TX_THREAD_SMP_MAX_CORES); i++) +#else + for (i = ((ULONG) 1); i < _tx_thread_smp_max_cores; i++) +#endif + { + + + /* Call port-specific memory synchronization primitive. */ + TX_PORT_SPECIFIC_MEMORY_SYNCHRONIZATION + + /* Add the states of each subsequent core. */ + other_core_status = other_core_status + _tx_thread_system_state[i]; + } + + } while (other_core_status != ((ULONG) 0)); + + /* Set the system state in preparation for entering the thread + scheduler. */ + _tx_thread_system_state[0] = TX_INITIALIZE_IS_FINISHED; + + /* Call port-specific memory synchronization primitive. */ + TX_PORT_SPECIFIC_MEMORY_SYNCHRONIZATION + + /* 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 +} + |
