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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:13:47 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:13:47 +0000 |
commit | 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 (patch) | |
tree | bcf648efac40ca6139842707f0eba5a4496a6dd2 /plat/arm/board/fvp_r/fvp_r_stack_protector.c | |
parent | Initial commit. (diff) | |
download | arm-trusted-firmware-upstream.tar.xz arm-trusted-firmware-upstream.zip |
Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plat/arm/board/fvp_r/fvp_r_stack_protector.c')
-rw-r--r-- | plat/arm/board/fvp_r/fvp_r_stack_protector.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/plat/arm/board/fvp_r/fvp_r_stack_protector.c b/plat/arm/board/fvp_r/fvp_r_stack_protector.c new file mode 100644 index 0000000..69b6312 --- /dev/null +++ b/plat/arm/board/fvp_r/fvp_r_stack_protector.c @@ -0,0 +1,24 @@ +/* + * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <stdint.h> + +#include <fvp_r_arch_helpers.h> +#include <plat/common/platform.h> + +#define RANDOM_CANARY_VALUE ((u_register_t) 8092347823957523895ULL) + +u_register_t plat_get_stack_protector_canary(void) +{ + /* + * Ideally, a random number should be returned instead of the + * combination of a timer's value and a compile-time constant. As the + * FVP_R does not have any random number generator, this is better than + * nothing but not necessarily really secure. + */ + return RANDOM_CANARY_VALUE ^ read_cntpct_el0(); +} + |