[feat][rt-thread] add rt-thread component and msh demo

components/rt-thread/src/components.c

@@ -0,0 +1,261 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2012-09-20     Bernard      Change the name to components.c
+ *                             And all components related header files.
+ * 2012-12-23     Bernard      fix the pthread initialization issue.
+ * 2013-06-23     Bernard      Add the init_call for components initialization.
+ * 2013-07-05     Bernard      Remove initialization feature for MS VC++ compiler
+ * 2015-02-06     Bernard      Remove the MS VC++ support and move to the kernel
+ * 2015-05-04     Bernard      Rename it to components.c because compiling issue
+ *                             in some IDEs.
+ * 2015-07-29     Arda.Fu      Add support to use RT_USING_USER_MAIN with IAR
+ * 2018-11-22     Jesven       Add secondary cpu boot up
+ */
+
+#include <rthw.h>
+#include <rtthread.h>
+
+#ifdef RT_USING_USER_MAIN
+#ifndef RT_MAIN_THREAD_STACK_SIZE
+#define RT_MAIN_THREAD_STACK_SIZE     2048
+#endif /* RT_MAIN_THREAD_STACK_SIZE */
+#ifndef RT_MAIN_THREAD_PRIORITY
+#define RT_MAIN_THREAD_PRIORITY       (RT_THREAD_PRIORITY_MAX / 3)
+#endif /* RT_MAIN_THREAD_PRIORITY */
+#endif /* RT_USING_USER_MAIN */
+
+#ifdef RT_USING_COMPONENTS_INIT
+/*
+ * Components Initialization will initialize some driver and components as following
+ * order:
+ * rti_start         --> 0
+ * BOARD_EXPORT      --> 1
+ * rti_board_end     --> 1.end
+ *
+ * DEVICE_EXPORT     --> 2
+ * COMPONENT_EXPORT  --> 3
+ * FS_EXPORT         --> 4
+ * ENV_EXPORT        --> 5
+ * APP_EXPORT        --> 6
+ *
+ * rti_end           --> 6.end
+ *
+ * These automatically initialization, the driver or component initial function must
+ * be defined with:
+ * INIT_BOARD_EXPORT(fn);
+ * INIT_DEVICE_EXPORT(fn);
+ * ...
+ * INIT_APP_EXPORT(fn);
+ * etc.
+ */
+static int rti_start(void)
+{
+    return 0;
+}
+INIT_EXPORT(rti_start, "0");
+
+static int rti_board_start(void)
+{
+    return 0;
+}
+INIT_EXPORT(rti_board_start, "0.end");
+
+static int rti_board_end(void)
+{
+    return 0;
+}
+INIT_EXPORT(rti_board_end, "1.end");
+
+static int rti_end(void)
+{
+    return 0;
+}
+INIT_EXPORT(rti_end, "6.end");
+
+/**
+ * RT-Thread Components Initialization for board
+ */
+void rt_components_board_init(void)
+{
+#if RT_DEBUG_INIT
+    int result;
+    const struct rt_init_desc *desc;
+    for (desc = &__rt_init_desc_rti_board_start; desc < &__rt_init_desc_rti_board_end; desc ++)
+    {
+        rt_kprintf("initialize %s", desc->fn_name);
+        result = desc->fn();
+        rt_kprintf(":%d done\n", result);
+    }
+#else
+    volatile const init_fn_t *fn_ptr;
+
+    for (fn_ptr = &__rt_init_rti_board_start; fn_ptr < &__rt_init_rti_board_end; fn_ptr++)
+    {
+        (*fn_ptr)();
+    }
+#endif /* RT_DEBUG_INIT */
+}
+
+/**
+ * RT-Thread Components Initialization
+ */
+void rt_components_init(void)
+{
+#if RT_DEBUG_INIT
+    int result;
+    const struct rt_init_desc *desc;
+
+    rt_kprintf("do components initialization.\n");
+    for (desc = &__rt_init_desc_rti_board_end; desc < &__rt_init_desc_rti_end; desc ++)
+    {
+        rt_kprintf("initialize %s", desc->fn_name);
+        result = desc->fn();
+        rt_kprintf(":%d done\n", result);
+    }
+#else
+    volatile const init_fn_t *fn_ptr;
+
+    for (fn_ptr = &__rt_init_rti_board_end; fn_ptr < &__rt_init_rti_end; fn_ptr ++)
+    {
+        (*fn_ptr)();
+    }
+#endif /* RT_DEBUG_INIT */
+}
+#endif /* RT_USING_COMPONENTS_INIT */
+
+#ifdef RT_USING_USER_MAIN
+
+void rt_application_init(void);
+void rt_hw_board_init(void);
+int rtthread_startup(void);
+
+#ifdef __ARMCC_VERSION
+extern int $Super$$main(void);
+/* re-define main function */
+int $Sub$$main(void)
+{
+    rtthread_startup();
+    return 0;
+}
+#elif defined(__ICCARM__)
+extern int main(void);
+/* __low_level_init will auto called by IAR cstartup */
+extern void __iar_data_init3(void);
+int __low_level_init(void)
+{
+    // call IAR table copy function.
+    __iar_data_init3();
+    rtthread_startup();
+    return 0;
+}
+#elif defined(__GNUC__)
+/* Add -eentry to arm-none-eabi-gcc argument */
+int entry(void)
+{
+    rtthread_startup();
+    return 0;
+}
+#endif
+
+#ifndef RT_USING_HEAP
+/* if there is not enable heap, we should use static thread and stack. */
+ALIGN(8)
+static rt_uint8_t main_stack[RT_MAIN_THREAD_STACK_SIZE];
+struct rt_thread main_thread;
+#endif /* RT_USING_HEAP */
+
+/* the system main thread */
+void main_thread_entry(void *parameter)
+{
+    extern int main(void);
+
+#ifdef RT_USING_COMPONENTS_INIT
+    /* RT-Thread components initialization */
+    rt_components_init();
+#endif /* RT_USING_COMPONENTS_INIT */
+
+#ifdef RT_USING_SMP
+    rt_hw_secondary_cpu_up();
+#endif /* RT_USING_SMP */
+    /* invoke system main function */
+#ifdef __ARMCC_VERSION
+    {
+        extern int $Super$$main(void);
+        $Super$$main(); /* for ARMCC. */
+    }
+#elif defined(__ICCARM__) || defined(__GNUC__) || defined(__TASKING__)
+    main();
+#endif
+}
+
+void rt_application_init(void)
+{
+    rt_thread_t tid;
+
+#ifdef RT_USING_HEAP
+    tid = rt_thread_create("main", main_thread_entry, RT_NULL,
+                           RT_MAIN_THREAD_STACK_SIZE, RT_MAIN_THREAD_PRIORITY, 20);
+    RT_ASSERT(tid != RT_NULL);
+#else
+    rt_err_t result;
+
+    tid = &main_thread;
+    result = rt_thread_init(tid, "main", main_thread_entry, RT_NULL,
+                            main_stack, sizeof(main_stack), RT_MAIN_THREAD_PRIORITY, 20);
+    RT_ASSERT(result == RT_EOK);
+
+    /* if not define RT_USING_HEAP, using to eliminate the warning */
+    (void)result;
+#endif /* RT_USING_HEAP */
+
+    rt_thread_startup(tid);
+}
+
+int rtthread_startup(void)
+{
+    rt_hw_interrupt_disable();
+
+    /* board level initialization
+     * NOTE: please initialize heap inside board initialization.
+     */
+    rt_hw_board_init();
+
+    /* show RT-Thread version */
+    rt_show_version();
+
+    /* timer system initialization */
+    rt_system_timer_init();
+
+    /* scheduler system initialization */
+    rt_system_scheduler_init();
+
+#ifdef RT_USING_SIGNALS
+    /* signal system initialization */
+    rt_system_signal_init();
+#endif /* RT_USING_SIGNALS */
+
+    /* create init_thread */
+    rt_application_init();
+
+    /* timer thread initialization */
+    rt_system_timer_thread_init();
+
+    /* idle thread initialization */
+    rt_thread_idle_init();
+
+#ifdef RT_USING_SMP
+    rt_hw_spin_lock(&_cpus_lock);
+#endif /* RT_USING_SMP */
+
+    /* start scheduler */
+    rt_system_scheduler_start();
+
+    /* never reach here */
+    return 0;
+}
+#endif /* RT_USING_USER_MAIN */