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Merge pull request #748 from dp-arm/dp/arm-sip 

BL31 runtime instrumentation fixes and documentation update
This commit is contained in:
danh-arm 2016-11-03 17:49:16 +00:00 committed by GitHub
parent 2fef96a31a bfef610667
commit 2b3ce7b8d9
2 changed files with 12 additions and 1 deletions
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6
docs/user-guide.md
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@ -466,6 +466,12 @@ performed.
Note: `TRUSTED_BOARD_BOOT` is currently not supported when `LOAD_IMAGE_V2`
is enabled.
* `ENABLE_RUNTIME_INSTRUMENTATION`: Boolean option to enable runtime
instrumentation which injects timestamp collection points into
Trusted Firmware to allow runtime performance to be measured.
Currently, only PSCI is instrumented. Enabling this option enables
the `ENABLE_PMF` build option as well. Default is 0.
#### ARM development platform specific build options
* `ARM_TSP_RAM_LOCATION`: location of the TSP binary. Options:

7
services/std_svc/std_svc_setup.c
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@ -81,9 +81,14 @@ uintptr_t std_svc_smc_handler(uint32_t smc_fid,
uint64_t ret;
#if ENABLE_RUNTIME_INSTRUMENTATION
/*
* Flush cache line so that even if CPU power down happens
* the timestamp update is reflected in memory.
*/
PMF_WRITE_TIMESTAMP(rt_instr_svc,
RT_INSTR_ENTER_PSCI,
PMF_NO_CACHE_MAINT,
PMF_CACHE_MAINT,
get_cpu_data(cpu_data_pmf_ts[CPU_DATA_PMF_TS0_IDX]));
#endif