shared/start/bspgetworkarea-default.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSScoreMemory
0007  *
0008  * @ingroup RTEMSBSPsSharedStartup
0009  *
0010  * @brief This source file contains the default implementation of
0011  *   _Memory_Get().
0012  */
0013
0014 /*
0015  * Copyright (C) 2011, 2019 embedded brains GmbH & Co. KG
0016  *
0017  * Copyright (C) 1989, 2009 On-Line Applications Research Corporation (OAR)
0018  *
0019  * Redistribution and use in source and binary forms, with or without
0020  * modification, are permitted provided that the following conditions
0021  * are met:
0022  * 1. Redistributions of source code must retain the above copyright
0023  *    notice, this list of conditions and the following disclaimer.
0024  * 2. Redistributions in binary form must reproduce the above copyright
0025  *    notice, this list of conditions and the following disclaimer in the
0026  *    documentation and/or other materials provided with the distribution.
0027  *
0028  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0029  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0030  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0031  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0032  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0033  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0034  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0035  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0036  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0037  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0038  * POSSIBILITY OF SUCH DAMAGE.
0039  */
0040
0041 #include <bsp.h>
0042
0043 #if defined(HAS_UBOOT) && !defined(BSP_DISABLE_UBOOT_WORK_AREA_CONFIG)
0044   #define USE_UBOOT
0045 #endif
0046
0047 /*
0048  *  These are provided by the linkcmds for ALL of the BSPs which use this file.
0049  */
0050 extern char WorkAreaBase[];
0051
0052 /*
0053  *  We may get the size information from U-Boot or the linker scripts.
0054  */
0055 #ifdef USE_UBOOT
0056 #include <bsp/u-boot.h>
0057 #include <rtems/sysinit.h>
0058
0059 static Memory_Area _Memory_Areas[ 1 ];
0060
0061 static void bsp_memory_initialize( void )
0062 {
0063   char *end;
0064
0065   end = (char *) bsp_uboot_board_info.bi_memstart
0066     + bsp_uboot_board_info.bi_memsize;
0067   _Memory_Initialize( &_Memory_Areas[ 0 ], WorkAreaBase, end );
0068 }
0069
0070 RTEMS_SYSINIT_ITEM(
0071   bsp_memory_initialize,
0072   RTEMS_SYSINIT_MEMORY,
0073   RTEMS_SYSINIT_ORDER_MIDDLE
0074 );
0075 #else /* !USE_UBOOT */
0076 extern char RamEnd[];
0077
0078 static Memory_Area _Memory_Areas[] = {
0079   MEMORY_INITIALIZER(WorkAreaBase, RamEnd)
0080 };
0081 #endif /* USE_UBOOT */
0082
0083 static const Memory_Information _Memory_Information =
0084   MEMORY_INFORMATION_INITIALIZER( _Memory_Areas );
0085
0086 const Memory_Information *_Memory_Get( void )
0087 {
0088   return &_Memory_Information;
0089 }