ARM Trusted Firmware implements the EL3 firmware layer for Xilinx Zynq UltraScale + MPSoC. The platform only uses the runtime part of ATF as ZynqMP already has a BootROM (BL1) and FSBL (BL2).
BL31 is ATF.
BL32 is an optional Secure Payload.
BL33 is the non-secure world software (U-Boot, Linux etc).
To build:
make ERROR_DEPRECATED=1 RESET_TO_BL31=1 CROSS_COMPILE=aarch64-none-elf- PLAT=zynqmp bl31
To build bl32 TSP you have to rebuild bl31 too:
make ERROR_DEPRECATED=1 RESET_TO_BL31=1 CROSS_COMPILE=aarch64-none-elf- PLAT=zynqmp SPD=tspd bl31 bl32
ZYNQMP_ATF_LOCATION: Specifies the location of the bl31 binary. Options:
tsram : bl31 will be located in OCM (default)tdram : bl31 will be located in DRAM (address: 0x30000000)ZYNQMP_TSP_RAM_LOCATION: Specifies the location of the bl32 binary and secure payload dispatcher. Options:
tsram : bl32/spd will be located in OCM (default)tdram : bl32/spd will be located in DRAM (address: 0x30000000)The following power domain tree represents the power domain model used by the ATF for ZynqMP:
+-+
|0|
+-+
+-------+---+---+-------+
| | | |
| | | |
v v v v
+-+ +-+ +-+ +-+
|0| |1| |2| |3|
+-+ +-+ +-+ +-+
The 4 leaf power domains represent the individual A53 cores, while resources common to the cluster are grouped in the power domain on the top.