firmware: psci: bind arm smccc features when discovered
Use PSCI device to query Arm SMCCC v1.1 support from secure monitor
and if so, bind drivers for the SMCCC features that monitor supports.
Drivers willing to be bound from Arm SMCCC features discovery can use
macro ARM_SMCCC_FEATURE_DRIVER() to register to smccc feature discovery,
providing target driver name and a callback function that returns
whether or not the SMCCC feature is supported by the system.
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index ef958b3..f10d1aa 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -37,4 +37,12 @@
Say yes to enable ZynqMP firmware interface driver.
If in doubt, say N.
+config ARM_SMCCC_FEATURES
+ bool "Arm SMCCC features discovery"
+ depends on ARM_PSCI_FW
+ help
+ Discover Arm SMCCC features for which a U-Boot driver is defined. When enabled,
+ the PSCI driver is always probed and binds dirvers registered to the Arm SMCCC
+ services if any and reported as supported by the SMCCC firmware.
+
source "drivers/firmware/scmi/Kconfig"