diff options
| author | dp-arm <dimitris.papastamos@arm.com> | 2017-05-23 09:32:49 +0100 |
|---|---|---|
| committer | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2017-06-22 10:33:19 +0100 |
| commit | d832aee900a92d14a08a6a2a552894188404b6a4 (patch) | |
| tree | f1e12914f0bc1f687509f1b7fbbaf172a335acfd /include/plat | |
| parent | 18f2efd67d881fe0a9a535ce9e801e60d746e024 (diff) | |
aarch64: Enable Statistical Profiling Extensions for lower ELs
SPE is only supported in non-secure state. Accesses to SPE specific
registers from SEL1 will trap to EL3. During a world switch, before
`TTBR` is modified the SPE profiling buffers are drained. This is to
avoid a potential invalid memory access in SEL1.
SPE is architecturally specified only for AArch64.
Change-Id: I04a96427d9f9d586c331913d815fdc726855f6b0
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>
Diffstat (limited to 'include/plat')
| -rw-r--r-- | include/plat/arm/common/plat_arm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/plat/arm/common/plat_arm.h b/include/plat/arm/common/plat_arm.h index 62c0ce7e..3335b320 100644 --- a/include/plat/arm/common/plat_arm.h +++ b/include/plat/arm/common/plat_arm.h @@ -218,4 +218,7 @@ int arm_execution_state_switch(unsigned int smc_fid, uint32_t cookie_lo, void *handle); +/* Disable Statistical Profiling Extensions helper */ +void arm_disable_spe(void); + #endif /* __PLAT_ARM_H__ */ |