feat: verify assembly bootloader factory recovery

STM8_app_asm/Makefile

@@ -6,16 +6,18 @@ BUILD_DIR := build
 AS := sdasstm8
 LD := sdldstm8
 PACKIHX := packihx
+MAKEBIN := makebin
 
 ASMFLAGS := -plosgff
 LINKFLAGS := -mjwxu -b HOME=0x8500 -b CODE=0x8568
 OBJECT := $(BUILD_DIR)/app_vectors.rel
 IHX := $(BUILD_DIR)/$(PROJECT).ihx
 HEX := $(BUILD_DIR)/$(PROJECT).hex
+BIN := $(BUILD_DIR)/$(PROJECT).bin
 
 .PHONY: all clean
 
-all: $(HEX)
+all: $(HEX) $(BIN)
 
 $(BUILD_DIR):
 	mkdir -p $(BUILD_DIR)
@@ -29,5 +31,10 @@ $(IHX): $(OBJECT)
 $(HEX): $(IHX)
 	$(PACKIHX) $< > $@
 
+# 生成用于写入W25Q80BV出厂区的主程序裸BIN。
+# -s提供完整STM8地址空间，-o跳过0x0000~0x84FF，仅保留0x8500之后的应用数据。
+$(BIN): $(IHX)
+	$(MAKEBIN) -p -s 0x10000 -o 0x8500 $< $@
+
 clean:
 	rm -rf $(BUILD_DIR)