[PATCH v4] Add make feature support for SoCFPGA Handoff

[Brian Sune <briansune@gmail.com>]

Introduce socfpga_gen5_handoff_prepare target in U-Boot Makefile
Automatically detects Altera/Intel SoCFPGA boards from .config
Checks for presence of hps_isw_handoff folder and .hiof files
Runs BSP generator script tools/cv_bsp_generator/cv_bsp_generator.py 
if files exist
Non-blocking: prepare continues even if handoff folder or files are missing
HANDOFF_PATH user define: override the auto detection in board folder

Signed-off-by: Brian Sune <briansune@gmail.com>
---
 Makefile | 35 ++++++++++++++++++++---------------
 1 file changed, 20 insertions(+), 15 deletions(-)

diff --git a/Makefile b/Makefile
index 32568a6c477..f5efe679259 100644
--- a/Makefile
+++ b/Makefile
@@ -2207,23 +2207,28 @@ socfpga_g5_hanoff_prepare:
 		exit 0; \
 	fi; \
 	BOARD_DIR=board/$$VENDOR/$$BOARD; \
-	HANDOFF_BASE=$$BOARD_DIR/hps_isw_handoff; \
-	if [ ! -d $$HANDOFF_BASE ]; then \
-		exit 0; \
-	fi; \
-	echo "[INFO] Handoff folder found: $$HANDOFF_BASE"; \
-	HANDOFF_FOLDER_NAME=$$(basename "$$(find $$HANDOFF_BASE -mindepth 1 -maxdepth 1 -type d | head -n1)"); \
-	if [ -z "$$HANDOFF_FOLDER_NAME" ]; then \
-		exit 0; \
-	fi; \
-	echo "[INFO] Handoff subfolder found under $$HANDOFF_BASE"; \
-	if [ -f $$HANDOFF_BASE/$$HANDOFF_FOLDER_NAME/$$HANDOFF_FOLDER_NAME.hiof ]; then \
-		echo "[INFO] Found hiof file: $$HANDOFF_BASE/$$HANDOFF_FOLDER_NAME/$$HANDOFF_FOLDER_NAME.hiof"; \
-		echo "[INFO] Using handoff folder: $$HANDOFF_FOLDER_NAME"; \
-		echo "[INFO] Running BSP generator..."; \
+	if [ -n "$$HANDOFF_PATH" ]; then \
+		echo "[INFO] Using manually assigned handoff path: $$HANDOFF_PATH"; \
+	else \
+		HANDOFF_BASE=$$BOARD_DIR/hps_isw_handoff; \
+		if [ ! -d $$HANDOFF_BASE ]; then \
+			exit 0; \
+		fi; \
+		echo "[INFO] Handoff folder found: $$HANDOFF_BASE"; \
+		HANDOFF_FOLDER_NAME=$$(basename "$$(find $$HANDOFF_BASE -mindepth 1 -maxdepth 1 -type d | head -n1)"); \
+		if [ -z "$$HANDOFF_FOLDER_NAME" ]; then \
+			exit 0; \
+		fi; \
+		echo "[INFO] Handoff subfolder found under $$HANDOFF_BASE"; \
+		if [ -f $$HANDOFF_BASE/$$HANDOFF_FOLDER_NAME/$$HANDOFF_FOLDER_NAME.hiof ]; then \
+			echo "[INFO] Found hiof file: $$HANDOFF_BASE/$$HANDOFF_FOLDER_NAME/$$HANDOFF_FOLDER_NAME.hiof"; \
+			echo "[INFO] Using handoff folder: $$HANDOFF_FOLDER_NAME"; \
+			echo "[INFO] Running BSP generator..."; \
+		fi; \
+		HANDOFF_PATH=$$BOARD_DIR/hps_isw_handoff/$$HANDOFF_FOLDER_NAME; \
 	fi; \
 	python3 tools/cv_bsp_generator/cv_bsp_generator.py \
-		-i $$BOARD_DIR/hps_isw_handoff/$$HANDOFF_FOLDER_NAME \
+		-i $$HANDOFF_PATH \
 		-o $$BOARD_DIR/qts || echo "[WARN] BSP generator failed, continuing..."; \
 	echo "[DONE] SoCFPGA QTS handoff conversion complete."
 
-- 
2.25.1