arm_ffa: introduce sandbox FF-A support
Emulate Secure World's FF-A ABIs and allow testing U-Boot FF-A support
Features of the sandbox FF-A support:
- Introduce an FF-A emulator
- Introduce an FF-A device driver for FF-A comms with emulated Secure World
- Provides test methods allowing to read the status of the inspected ABIs
The sandbox FF-A emulator supports only 64-bit direct messaging.
Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Jens Wiklander <jens.wiklander@linaro.org>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/drivers/firmware/arm-ffa/Kconfig b/drivers/firmware/arm-ffa/Kconfig
index 9200c80..fc668c1 100644
--- a/drivers/firmware/arm-ffa/Kconfig
+++ b/drivers/firmware/arm-ffa/Kconfig
@@ -2,9 +2,9 @@
config ARM_FFA_TRANSPORT
bool "Enable Arm Firmware Framework for Armv8-A driver"
- depends on DM && ARM64
- select ARM_SMCCC
- select ARM_SMCCC_FEATURES
+ depends on DM && (ARM64 || SANDBOX)
+ select ARM_SMCCC if !SANDBOX
+ select ARM_SMCCC_FEATURES if !SANDBOX
select LIB_UUID
select DEVRES
help
@@ -32,5 +32,10 @@
Generic FF-A methods are implemented in the Uclass (arm-ffa-uclass.c).
Arm specific methods are implemented in the Arm driver (arm-ffa.c).
- For more details about the FF-A support, please refer to doc/arch/arm64.ffa.rst
+ FF-A sandbox is provided to run FF-A under sandbox and allows to test the FF-A Uclass.
+ Sandbox support includes an emulator for Arm FF-A which emulates the FF-A side of
+ the Secure World and provides FF-A ABIs inspection methods (ffa-emul-uclass.c).
+ An FF-A sandbox driver is also provided for FF-A communication with the emulated
+ Secure World (sandbox_ffa.c).
+ For more details about the FF-A support, please refer to doc/arch/arm64.ffa.rst