config: Add <rtems/confdefs/percpu.h>

Remove comments and copyrightable content from the moved content.  Use
BSD-2-Clause for new file according to file history of
<rtems/confdefs.h>.

Update #3053.
Update #3875.

1 files changed, 158 insertions, 0 deletions

diff --git a/cpukit/include/rtems/confdefs/percpu.h b/cpukit/include/rtems/confdefs/percpu.h
new file mode 100644
index 0000000000..730571b54a
--- /dev/null
+++ b/cpukit/include/rtems/confdefs/percpu.h
@@ -0,0 +1,158 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup RTEMSApplicationConfiguration
+ *
+ * @brief Evaluate Per-CPU Configuration Options
+ *
+ * Since the idle thread stack size (CONFIGURE_IDLE_TASK_STACK_SIZE) depends on
+ * CONFIGURE_MINIMUM_TASK_STACK_SIZE, the POSIX-specific
+ * CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE configuration option is also evaluated
+ * in this header file for simplicity.
+ *
+ * This header file defines _CONFIGURE_MAXIMUM_PROCESSORS for use by other
+ * configuration header files.
+ */
+
+/*
+ * Copyright (C) 2018, 2020 embedded brains GmbH (http://www.embedded-brains.de)
+ *
+ * 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.
+ *
+ * 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 OWNER 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.
+ */
+
+#ifndef _RTEMS_CONFDEFS_PERCPU_H
+#define _RTEMS_CONFDEFS_PERCPU_H
+
+#ifndef __CONFIGURATION_TEMPLATE_h
+#error "Do not include this file directly, use <rtems/confdefs.h> instead"
+#endif
+
+#ifdef CONFIGURE_INIT
+
+#include <rtems/confdefs/bsp.h>
+#include <rtems/score/context.h>
+#include <rtems/score/percpu.h>
+#include <rtems/score/smp.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Ensure that _CONFIGURE_MAXIMUM_PROCESSORS > 1 only in SMP configurations */
+#if defined(CONFIGURE_MAXIMUM_PROCESSORS) && defined(RTEMS_SMP)
+  #define _CONFIGURE_MAXIMUM_PROCESSORS CONFIGURE_MAXIMUM_PROCESSORS
+#else
+  #define _CONFIGURE_MAXIMUM_PROCESSORS 1
+#endif
+
+#ifdef RTEMS_SMP
+  const uint32_t _SMP_Processor_configured_maximum =
+    _CONFIGURE_MAXIMUM_PROCESSORS;
+
+  Per_CPU_Control_envelope
+    _Per_CPU_Information[ _CONFIGURE_MAXIMUM_PROCESSORS ];
+#endif
+
+/* Interrupt stack configuration */
+
+#ifndef CONFIGURE_INTERRUPT_STACK_SIZE
+  #ifdef BSP_INTERRUPT_STACK_SIZE
+    #define CONFIGURE_INTERRUPT_STACK_SIZE BSP_INTERRUPT_STACK_SIZE
+  #else
+    #define CONFIGURE_INTERRUPT_STACK_SIZE CPU_STACK_MINIMUM_SIZE
+  #endif
+#endif
+
+#if CONFIGURE_INTERRUPT_STACK_SIZE % CPU_INTERRUPT_STACK_ALIGNMENT != 0
+  #error "CONFIGURE_INTERRUPT_STACK_SIZE fails to meet the CPU port interrupt stack alignment"
+#endif
+
+RTEMS_DEFINE_GLOBAL_SYMBOL(
+  _ISR_Stack_size,
+  CONFIGURE_INTERRUPT_STACK_SIZE
+);
+
+char _ISR_Stack_area_begin[
+  _CONFIGURE_MAXIMUM_PROCESSORS * CONFIGURE_INTERRUPT_STACK_SIZE
+] RTEMS_ALIGNED( CPU_INTERRUPT_STACK_ALIGNMENT )
+RTEMS_SECTION( ".rtemsstack.interrupt.begin" );
+
+RTEMS_DEFINE_GLOBAL_SYMBOL_IN_SECTION(
+  _ISR_Stack_area_end,
+  ".rtemsstack.interrupt.end"
+);
+
+/* Thread stack size configuration */
+
+#ifndef CONFIGURE_MINIMUM_TASK_STACK_SIZE
+  #define CONFIGURE_MINIMUM_TASK_STACK_SIZE CPU_STACK_MINIMUM_SIZE
+#endif
+
+#ifndef CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE
+  #define CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE \
+    ( 2 * CONFIGURE_MINIMUM_TASK_STACK_SIZE )
+#endif
+
+/* Idle thread configuration */
+
+#ifndef CONFIGURE_IDLE_TASK_STACK_SIZE
+  #ifdef BSP_IDLE_TASK_STACK_SIZE
+    #define CONFIGURE_IDLE_TASK_STACK_SIZE BSP_IDLE_TASK_STACK_SIZE
+  #else
+    #define CONFIGURE_IDLE_TASK_STACK_SIZE CONFIGURE_MINIMUM_TASK_STACK_SIZE
+  #endif
+#endif
+
+#if CONFIGURE_IDLE_TASK_STACK_SIZE < CONFIGURE_MINIMUM_TASK_STACK_SIZE
+  #error "CONFIGURE_IDLE_TASK_STACK_SIZE less than CONFIGURE_MINIMUM_TASK_STACK_SIZE"
+#endif
+
+const size_t _Thread_Idle_stack_size = CONFIGURE_IDLE_TASK_STACK_SIZE;
+
+char _Thread_Idle_stacks[
+  _CONFIGURE_MAXIMUM_PROCESSORS
+    * ( CONFIGURE_IDLE_TASK_STACK_SIZE + CPU_IDLE_TASK_IS_FP * CONTEXT_FP_SIZE )
+] RTEMS_ALIGNED( CPU_INTERRUPT_STACK_ALIGNMENT )
+RTEMS_SECTION( ".rtemsstack.idle" );
+
+#if defined(CONFIGURE_IDLE_TASK_INITIALIZES_APPLICATION) && \
+  !defined(CONFIGURE_IDLE_TASK_BODY)
+  #error "If you define CONFIGURE_IDLE_TASK_INITIALIZES_APPLICATION, then you must define CONFIGURE_IDLE_TASK_BODY as well"
+#endif
+
+#if !defined(CONFIGURE_IDLE_TASK_BODY) && defined(BSP_IDLE_TASK_BODY)
+  #define CONFIGURE_IDLE_TASK_BODY BSP_IDLE_TASK_BODY
+#endif
+
+#ifdef CONFIGURE_IDLE_TASK_BODY
+  const Thread_Idle_body _Thread_Idle_body = CONFIGURE_IDLE_TASK_BODY;
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CONFIGURE_INIT */
+
+#endif /* _RTEMS_CONFDEFS_PERCPU_H */