arm-trusted-firmware

History

dp-arm 872be88a29 Add PMF instrumentation points in TF In order to quantify the overall time spent in the PSCI software implementation, an initial collection of PMF instrumentation points has been added. Instrumentation has been added to the following code paths: - Entry to PSCI SMC handler. The timestamp is captured as early as possible during the runtime exception and stored in memory before entering the PSCI SMC handler. - Exit from PSCI SMC handler. The timestamp is captured after normal return from the PSCI SMC handler or if a low power state was requested it is captured in the bl31 warm boot path before return to normal world. - Entry to low power state. The timestamp is captured before entry to a low power state which implies either standby or power down. As these power states are mutually exclusive, only one timestamp is defined to describe both. It is possible to differentiate between the two power states using the PSCI STAT interface. - Exit from low power state. The timestamp is captured after a standby or power up operation has completed. To calculate the number of cycles spent running code in Trusted Firmware one can perform the following calculation: (exit_psci - enter_psci) - (exit_low_pwr - enter_low_pwr). The resulting number of cycles can be converted to time given the frequency of the counter. Change-Id: Ie3b8f3d16409b6703747093b3a2d5c7429ad0166 Signed-off-by: dp-arm <dimitris.papastamos@arm.com>		8 years ago
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aarch32	AArch32: Add support to PSCI lib	8 years ago
aarch64	Introduce PSCI Library Interface	8 years ago
psci_common.c	AArch32: Add support to PSCI lib	8 years ago
psci_lib.mk	AArch32: Add support to PSCI lib	8 years ago
psci_main.c	Add PMF instrumentation points in TF	8 years ago
psci_off.c	Add PMF instrumentation points in TF	8 years ago
psci_on.c	Introduce PSCI Library Interface	8 years ago
psci_private.h	PSCI: Add support for PSCI NODE_HW_STATE API	8 years ago
psci_setup.c	PSCI: Introduce PSCI Library argument structure	8 years ago
psci_stat.c	Validate psci_find_target_suspend_lvl() result	8 years ago
psci_suspend.c	Add PMF instrumentation points in TF	8 years ago
psci_system_off.c	Introduce `el3_runtime` and `PSCI` libraries	8 years ago