shared/start/bspreset-armv7m.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  * Copyright (c) 2015 embedded brains GmbH & Co. KG
0005  *
0006  * Redistribution and use in source and binary forms, with or without
0007  * modification, are permitted provided that the following conditions
0008  * are met:
0009  * 1. Redistributions of source code must retain the above copyright
0010  *    notice, this list of conditions and the following disclaimer.
0011  * 2. Redistributions in binary form must reproduce the above copyright
0012  *    notice, this list of conditions and the following disclaimer in the
0013  *    documentation and/or other materials provided with the distribution.
0014  *
0015  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0016  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0017  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0018  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0019  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0020  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0021  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0024  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0025  * POSSIBILITY OF SUCH DAMAGE.
0026  */
0027
0028 #include <rtems.h>
0029 #include <rtems/score/armv7m.h>
0030
0031 #include <bsp/bootcard.h>
0032 #include <bsp/start.h>
0033
0034 #ifdef ARM_MULTILIB_ARCH_V7M
0035
0036 BSP_START_TEXT_SECTION __attribute__((flatten)) void
0037 bsp_reset( rtems_fatal_source source, rtems_fatal_code code )
0038 {
0039   rtems_interrupt_level level;
0040
0041   (void) source;
0042   (void) code;
0043
0044   rtems_interrupt_local_disable(level);
0045   (void) level;
0046
0047   _ARMV7M_SCB->aircr = ARMV7M_SCB_AIRCR_VECTKEY
0048     | ARMV7M_SCB_AIRCR_SYSRESETREQ;
0049
0050   while (true) {
0051     /* Do nothing */
0052   }
0053 }
0054
0055 #endif /* ARM_MULTILIB_ARCH_V7M */