qoriq/start/portal.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  * Copyright (c) 2016 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 <bsp/qoriq.h>
0029
0030 #if QORIQ_CHIP_IS_T_VARIANT(QORIQ_CHIP_VARIANT)
0031
0032 #include <libcpu/powerpc-utility.h>
0033
0034 void qoriq_clear_ce_portal(void *base, size_t size)
0035 {
0036   size_t offset;
0037
0038   for (offset = 0; offset < size; offset += 64) {
0039     ppc_data_cache_block_clear_to_zero_2(base, offset);
0040     ppc_data_cache_block_flush_2(base, offset);
0041   }
0042 }
0043
0044 void qoriq_clear_ci_portal(void *base, size_t size)
0045 {
0046   uint32_t zero;
0047   size_t offset;
0048
0049   zero = 0;
0050
0051   for (offset = 0; offset < size; offset += 4) {
0052     ppc_write_word(zero, (char *) base + offset);
0053   }
0054 }
0055
0056 #endif