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| author | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2017-10-13 12:06:06 +0100 |
|---|---|---|
| committer | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2017-11-20 09:55:01 +0000 |
| commit | 281a08cc6438d868bd1b0bcf19bc6c95207b42ac (patch) | |
| tree | c75a7e1192f49c1d091cbe7d307ec65fe2b196a7 /include/lib/extensions | |
| parent | c776deed60b3d7f30f3095ee98c3f0b3c815c348 (diff) | |
| download | platform_external_arm-trusted-firmware-281a08cc6438d868bd1b0bcf19bc6c95207b42ac.tar.gz platform_external_arm-trusted-firmware-281a08cc6438d868bd1b0bcf19bc6c95207b42ac.tar.bz2 platform_external_arm-trusted-firmware-281a08cc6438d868bd1b0bcf19bc6c95207b42ac.zip | |
Refactor Statistical Profiling Extensions implementation
Factor out SPE operations in a separate file. Use the publish
subscribe framework to drain the SPE buffers before entering secure
world. Additionally, enable SPE before entering normal world.
A side effect of this change is that the profiling buffers are now
only drained when a transition from normal world to secure world
happens. Previously they were drained also on return from secure
world, which is unnecessary as SPE is not supported in S-EL1.
Change-Id: I17582c689b4b525770dbb6db098b3a0b5777b70a
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
Diffstat (limited to 'include/lib/extensions')
| -rw-r--r-- | include/lib/extensions/spe.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/lib/extensions/spe.h b/include/lib/extensions/spe.h new file mode 100644 index 000000000..8a74127a6 --- /dev/null +++ b/include/lib/extensions/spe.h @@ -0,0 +1,13 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef __SPE_H__ +#define __SPE_H__ + +void spe_enable(int el2_unused); +void spe_disable(void); + +#endif /* __SPE_H__ */ |