1 /*
2  * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #include <stdint.h>
8 
9 #include <arch_helpers.h>
10 #include <plat/common/platform.h>
11 
12 #define RANDOM_CANARY_VALUE	2144346116U
13 
plat_get_stack_protector_canary(void)14 u_register_t plat_get_stack_protector_canary(void)
15 {
16 	/*
17 	 * Ideally, a random number should be returned instead of the
18 	 * combination of a timer's value and a compile-time constant.
19 	 */
20 	return RANDOM_CANARY_VALUE ^ (u_register_t)read_cntpct_el0();
21 }
22 
23