70 lines
2.7 KiB
C
70 lines
2.7 KiB
C
/*
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* Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __UTILS_H__
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#define __UTILS_H__
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#if !ERROR_DEPRECATED
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#include <utils_def.h>
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#endif
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/*
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* C code should be put in this part of the header to avoid breaking ASM files
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* or linker scripts including it.
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*/
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#if !(defined(__LINKER__) || defined(__ASSEMBLY__))
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#include <types.h>
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/*
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* Fill a region of normal memory of size "length" in bytes with zero bytes.
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*
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* WARNING: This function can only operate on normal memory. This means that
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* the MMU must be enabled when using this function. Otherwise, use
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* zeromem.
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*/
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void zero_normalmem(void *mem, u_register_t length);
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/*
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* Fill a region of memory of size "length" in bytes with null bytes.
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*
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* Unlike zero_normalmem, this function has no restriction on the type of
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* memory targeted and can be used for any device memory as well as normal
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* memory. This function must be used instead of zero_normalmem when MMU is
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* disabled.
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*
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* NOTE: When data cache and MMU are enabled, prefer zero_normalmem for faster
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* zeroing.
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*/
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void zeromem(void *mem, u_register_t length);
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#endif /* !(defined(__LINKER__) || defined(__ASSEMBLY__)) */
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#endif /* __UTILS_H__ */
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