Sandrine Bailleux | 7659a26 | 2016-07-05 09:55:03 +0100 | [diff] [blame] | 1 | /* |
David Cunado | 2e36de8 | 2017-01-19 10:26:16 +0000 | [diff] [blame] | 2 | * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved. |
Sandrine Bailleux | 7659a26 | 2016-07-05 09:55:03 +0100 | [diff] [blame] | 3 | * |
dp-arm | fa3cf0b | 2017-05-03 09:38:09 +0100 | [diff] [blame] | 4 | * SPDX-License-Identifier: BSD-3-Clause |
Sandrine Bailleux | 7659a26 | 2016-07-05 09:55:03 +0100 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #ifndef __UTILS_H__ |
| 8 | #define __UTILS_H__ |
| 9 | |
Scott Branden | bf404c0 | 2017-04-10 11:45:52 -0700 | [diff] [blame] | 10 | #if !ERROR_DEPRECATED |
| 11 | #include <utils_def.h> |
David Cunado | 2e36de8 | 2017-01-19 10:26:16 +0000 | [diff] [blame] | 12 | #endif |
| 13 | |
Douglas Raillard | 21362a9 | 2016-12-02 13:51:54 +0000 | [diff] [blame] | 14 | /* |
| 15 | * C code should be put in this part of the header to avoid breaking ASM files |
| 16 | * or linker scripts including it. |
| 17 | */ |
| 18 | #if !(defined(__LINKER__) || defined(__ASSEMBLY__)) |
| 19 | |
| 20 | #include <types.h> |
| 21 | |
| 22 | /* |
| 23 | * Fill a region of normal memory of size "length" in bytes with zero bytes. |
| 24 | * |
| 25 | * WARNING: This function can only operate on normal memory. This means that |
| 26 | * the MMU must be enabled when using this function. Otherwise, use |
| 27 | * zeromem. |
| 28 | */ |
| 29 | void zero_normalmem(void *mem, u_register_t length); |
| 30 | |
| 31 | /* |
| 32 | * Fill a region of memory of size "length" in bytes with null bytes. |
| 33 | * |
| 34 | * Unlike zero_normalmem, this function has no restriction on the type of |
| 35 | * memory targeted and can be used for any device memory as well as normal |
| 36 | * memory. This function must be used instead of zero_normalmem when MMU is |
| 37 | * disabled. |
| 38 | * |
| 39 | * NOTE: When data cache and MMU are enabled, prefer zero_normalmem for faster |
| 40 | * zeroing. |
| 41 | */ |
| 42 | void zeromem(void *mem, u_register_t length); |
| 43 | #endif /* !(defined(__LINKER__) || defined(__ASSEMBLY__)) */ |
| 44 | |
Sandrine Bailleux | 7659a26 | 2016-07-05 09:55:03 +0100 | [diff] [blame] | 45 | #endif /* __UTILS_H__ */ |