boards: amd: versalnet_apu: Add comprehensive TF-A build integration

Enable ARM Trusted Firmware support for Versal NET APU board with
platform-specific optimizations.

Changes:
- Add TF-A platform configuration (PLAT=versal_net)
- Configure board-specific TF-A parameters (TFA_NO_PM, PRELOADED_BL33_BASE)
- Add automatic TF-A module selection in Kconfig
- Update QEMU kernel loading to use TF-A bl31.elf
- Update the data value that QEMU expects(0x3EE) at the specified memory
  address for proper board emulation.
- Modified data address configuration to match QEMU implementation

The board now automatically builds ARM Trusted Firmware during Zephyr
application compilation with Versal NET specific optimizations.

Boot flow: Boot PDI -> TF-A -> Zephyr

Signed-off-by: Appana Durga Kedareswara rao <[email protected]>

Author: Appana Durga Kedareswara rao

boards/amd/versalnet_apu/board.cmake

@@ -10,13 +10,26 @@ set(QEMU_ARCH xilinx-aarch64)
 set(QEMU_CPU_TYPE_${ARCH} cortexa78)
 
 set(QEMU_FLAGS_${ARCH}
-	-machine arm-generic-fdt
-	-hw-dtb ${PROJECT_BINARY_DIR}/${BOARD}-qemu.dtb
-	-device loader,addr=0xEC200300,data=0x3EE,data-len=4 -device loader,addr=0xEC200300,data=0x3DD,data-len=4
-	-nographic
-	-m 2g
+  -machine arm-generic-fdt
+  -hw-dtb ${PROJECT_BINARY_DIR}/${BOARD}-qemu.dtb
+  -device loader,addr=0xEC200300,data=0x3EE,data-len=4 -device loader,addr=0xEC200300,data=0x3EE,data-len=4
+  -nographic
+  -m 2g
 )
 
+# Set TF-A platform for ARM Trusted Firmware builds
+if(CONFIG_BUILD_WITH_TFA)
+  set(TFA_PLAT "versal_net")
+  # Add Versal NET specific TF-A build parameters
+  set(TFA_EXTRA_ARGS "TFA_NO_PM=1;PRELOADED_BL33_BASE=0x0")
+  if(CONFIG_TFA_MAKE_BUILD_TYPE_DEBUG)
+    set(BUILD_FOLDER "debug")
+  else()
+    set(BUILD_FOLDER "release")
+  endif()
+endif()
+
 set(QEMU_KERNEL_OPTION
-	-device loader,cpu-num=0,file=\$<TARGET_FILE:\${logical_target_for_zephyr_elf}>
+  -device loader,cpu-num=0,file=${PROJECT_BINARY_DIR}/../tfa/versal_net/${BUILD_FOLDER}/bl31/bl31.elf
+  -device loader,file=\$<TARGET_FILE:\${logical_target_for_zephyr_elf}>
 )

boards/amd/versalnet_apu/versalnet_apu_defconfig

@@ -1,6 +1,7 @@
 # The Zephyr build from this defconfig is expected to boot from
 # Xilinx Arm Trusted Firmware (ATF).
 # Boot Flow is: Boot PDI -> TF-A -> Zephyr
+CONFIG_BUILD_WITH_TFA=y
 
 CONFIG_ARM64_VA_BITS_40=y
 CONFIG_ARM64_PA_BITS_40=y