diff options
Diffstat (limited to 'bsps/arm/tms570/start/init_esm.c')
-rw-r--r-- | bsps/arm/tms570/start/init_esm.c | 43 |
1 files changed, 40 insertions, 3 deletions
diff --git a/bsps/arm/tms570/start/init_esm.c b/bsps/arm/tms570/start/init_esm.c index fdc7f94b90..35fd1c8eab 100644 --- a/bsps/arm/tms570/start/init_esm.c +++ b/bsps/arm/tms570/start/init_esm.c @@ -1,9 +1,42 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + /** * @file * * @ingroup RTEMSBSPsARMTMS570 * - * @brief Error signaling module initialization + * @brief This source file contains the error signaling module initialization. + */ + +/* + * Copyright (C) 2022 Airbus U.S. Space & Defense, Inc + * Copyright (C) 2016 Pavel Pisa <pisa@cmp.felk.cvut.cz> + * + * Czech Technical University in Prague + * Zikova 1903/4 + * 166 36 Praha 6 + * Czech Republic + * + * 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. */ #include <stdint.h> @@ -36,8 +69,12 @@ void tms570_esm_init( void ) /** - Reset error pin */ if (TMS570_ESM.EPSR == 0U) { - TMS570_ESM.EKR = 0x00000005U; - } else { + /* + * Per TMS570LC4x Errata DEVICE#60, the error pin cannot be cleared with a + * normal EKR write upon system reset. Put in diagnostic followed by + * normal mode instead. This sequence works also on other chip variants. + */ + TMS570_ESM.EKR = 0x0000000AU; TMS570_ESM.EKR = 0x00000000U; } |