Sandrine Bailleux | ed81f3e | 2016-07-05 09:55:03 +0100 | [diff] [blame] | 1 | /* |
David Cunado | 9edac04 | 2017-01-19 10:26:16 +0000 | [diff] [blame] | 2 | * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved. |
Sandrine Bailleux | ed81f3e | 2016-07-05 09:55:03 +0100 | [diff] [blame] | 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are met: |
| 6 | * |
| 7 | * Redistributions of source code must retain the above copyright notice, this |
| 8 | * list of conditions and the following disclaimer. |
| 9 | * |
| 10 | * Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * Neither the name of ARM nor the names of its contributors may be used |
| 15 | * to endorse or promote products derived from this software without specific |
| 16 | * prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #ifndef __UTILS_H__ |
| 32 | #define __UTILS_H__ |
| 33 | |
Scott Branden | 53d9c9c | 2017-04-10 11:45:52 -0700 | [diff] [blame] | 34 | #if !ERROR_DEPRECATED |
| 35 | #include <utils_def.h> |
David Cunado | 9edac04 | 2017-01-19 10:26:16 +0000 | [diff] [blame] | 36 | #endif |
| 37 | |
Douglas Raillard | 308d359 | 2016-12-02 13:51:54 +0000 | [diff] [blame] | 38 | /* |
| 39 | * C code should be put in this part of the header to avoid breaking ASM files |
| 40 | * or linker scripts including it. |
| 41 | */ |
| 42 | #if !(defined(__LINKER__) || defined(__ASSEMBLY__)) |
| 43 | |
| 44 | #include <types.h> |
| 45 | |
| 46 | /* |
| 47 | * Fill a region of normal memory of size "length" in bytes with zero bytes. |
| 48 | * |
| 49 | * WARNING: This function can only operate on normal memory. This means that |
| 50 | * the MMU must be enabled when using this function. Otherwise, use |
| 51 | * zeromem. |
| 52 | */ |
| 53 | void zero_normalmem(void *mem, u_register_t length); |
| 54 | |
| 55 | /* |
| 56 | * Fill a region of memory of size "length" in bytes with null bytes. |
| 57 | * |
| 58 | * Unlike zero_normalmem, this function has no restriction on the type of |
| 59 | * memory targeted and can be used for any device memory as well as normal |
| 60 | * memory. This function must be used instead of zero_normalmem when MMU is |
| 61 | * disabled. |
| 62 | * |
| 63 | * NOTE: When data cache and MMU are enabled, prefer zero_normalmem for faster |
| 64 | * zeroing. |
| 65 | */ |
| 66 | void zeromem(void *mem, u_register_t length); |
| 67 | #endif /* !(defined(__LINKER__) || defined(__ASSEMBLY__)) */ |
| 68 | |
Sandrine Bailleux | ed81f3e | 2016-07-05 09:55:03 +0100 | [diff] [blame] | 69 | #endif /* __UTILS_H__ */ |