modify nuttx bug of lack of files

2021-06-11 11:25:07 +08:00
parent 4a7f51a5e9
commit 6d0f2ca39a
6752 changed files with 1528133 additions and 0 deletions
@@ -0,0 +1,154 @@
+/****************************************************************************
+ * sched/init/nx_smpstart.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <queue.h>
+#include <debug.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/kmalloc.h>
+#include <nuttx/sched.h>
+#include <nuttx/sched_note.h>
+
+#include "group/group.h"
+#include "sched/sched.h"
+#include "init/init.h"
+
+#ifdef CONFIG_SMP
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nx_idle_trampoline
+ *
+ * Description:
+ *   This is the common start-up logic for the IDLE task for CPUs 1 through
+ *   (CONFIG_SMP_NCPUS-1).  Having a start-up function such as this for the
+ *   IDLE is not really an architectural necessity.  It is used only for
+ *   symmetry with now other threads are started (see nxtask_start() and
+ *   pthread_start()).
+ *
+ * Input Parameters:
+ *   None.
+ *
+ * Returned Value:
+ *   This function does not return.
+ *
+ ****************************************************************************/
+
+void nx_idle_trampoline(void)
+{
+#ifdef CONFIG_SCHED_INSTRUMENTATION
+  FAR struct tcb_s *tcb = this_task();
+
+  /* Announce that the IDLE task has started */
+
+  sched_note_start(tcb);
+#endif
+
+  /* Enter the IDLE loop */
+
+  sinfo("CPU%d: Beginning Idle Loop\n", this_cpu());
+
+  for (; ; )
+    {
+      /* Perform any processor-specific idle state operations */
+
+      up_idle();
+    }
+}
+
+/****************************************************************************
+ * Name: nx_smp_start
+ *
+ * Description:
+ *   In an SMP configuration, only one CPU is initially active (CPU 0).
+ *   System initialization occurs on that single thread. At the completion
+ *   of the initialization of the OS, just before beginning normal
+ *   multitasking, the additional CPUs would be started by calling this
+ *   function.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   Zero on success; a negated errno value on failure.
+ *
+ * Assumption:
+ *   Runs before the full initialization sequence has completed.  Runs after
+ *   all OS facilities are set up, but before multi-tasking has been started.
+ *
+ ****************************************************************************/
+
+int nx_smp_start(void)
+{
+  int ret;
+  int cpu;
+
+  /* Create a stack for all CPU IDLE threads (except CPU0 which already has
+   * a stack).
+   */
+
+  for (cpu = 1; cpu < CONFIG_SMP_NCPUS; cpu++)
+    {
+      FAR struct tcb_s *tcb = current_task(cpu);
+      DEBUGASSERT(tcb != NULL);
+
+      ret = up_cpu_idlestack(cpu, tcb, CONFIG_SMP_IDLETHREAD_STACKSIZE);
+      if (ret < 0)
+        {
+          serr("ERROR: Failed to allocate stack for CPU%d\n", cpu);
+          return ret;
+        }
+
+      /* Initialize the processor-specific portion of the TCB */
+
+      up_initial_state(tcb);
+    }
+
+  /* Then start all of the other CPUs after we have completed the memory
+   * allocations.  CPU0 is already running.
+   */
+
+  for (cpu = 1; cpu < CONFIG_SMP_NCPUS; cpu++)
+    {
+      /* Start the CPU */
+
+      ret = up_cpu_start(cpu);
+      if (ret < 0)
+        {
+          serr("ERROR: Failed to start CPU%d: %d\n", cpu, ret);
+          return ret;
+        }
+    }
+
+  return OK;
+}
+
+#endif /* CONFIG_SMP */