add uf2 linker for metro m7 1011

Author: hathach

hw/bsp/imxrt/boards/metro_m7_1011/board.mk

@@ -1,14 +1,17 @@
 CFLAGS += -DCPU_MIMXRT1011DAE5A -DCFG_EXAMPLE_VIDEO_READONLY
 MCU_VARIANT = MIMXRT1011
 
+# LD file with uf2
+LD_FILE = $(BOARD_PATH)/$(BOARD).ld
+
 # For flash-jlink target
 JLINK_DEVICE = MIMXRT1011DAE5A
 
 # For flash-pyocd target
 PYOCD_TARGET = mimxrt1010
 
 # flash using pyocd
-flash: flash-pyocd
+flash: flash-uf2
 flash-uf2: $(BUILD)/$(PROJECT).uf2
 	@echo copying $<
 	@$(CP) $< /media/$(USER)/METROM7BOOT

hw/bsp/imxrt/family.c

@@ -57,8 +57,7 @@ void board_init(void)
 {
   // make sure the dcache is on.
 #if defined(__DCACHE_PRESENT) && __DCACHE_PRESENT
-    if (SCB_CCR_DC_Msk != (SCB_CCR_DC_Msk & SCB->CCR))
-        SCB_EnableDCache();
+  if (SCB_CCR_DC_Msk != (SCB_CCR_DC_Msk & SCB->CCR)) SCB_EnableDCache();
 #endif
 
   // Init clock

hw/bsp/imxrt/family.mk

@@ -28,7 +28,7 @@ CFLAGS += -Wno-error=unused-parameter -Wno-error=implicit-fallthrough -Wno-error
 MCU_DIR = $(SDK_DIR)/devices/$(MCU_VARIANT)
 
 # All source paths should be relative to the top level.
-LD_FILE = $(MCU_DIR)/gcc/$(MCU_VARIANT)xxxxx_flexspi_nor.ld
+LD_FILE ?= $(MCU_DIR)/gcc/$(MCU_VARIANT)xxxxx_flexspi_nor.ld
 
 # TODO for net_lwip_webserver example, but may not needed !! 
 LDFLAGS += \
@@ -62,7 +62,8 @@ SRC_S += $(MCU_DIR)/gcc/startup_$(MCU_VARIANT).S
 FREERTOS_PORT = ARM_CM7/r0p1
 
 # UF2 generation, iMXRT need to strip to text only before conversion
+APPLICATION_ADDR = 0x6000C000
 $(BUILD)/$(PROJECT).uf2: $(BUILD)/$(PROJECT).elf
 	@echo CREATE $@
-	@$(OBJCOPY) -O ihex -R .flash_config -R .ivt $^ $(BUILD)/$(PROJECT)-textonly.hex
-	$(PYTHON) $(TOP)/tools/uf2/utils/uf2conv.py -f $(UF2_FAMILY_ID) -c -o $@ $(BUILD)/$(PROJECT)-textonly.hex
+	@$(OBJCOPY) -O binary -R .flash_config -R .ivt $^ $(BUILD)/$(PROJECT)-textonly.bin
+	$(PYTHON) $(TOP)/tools/uf2/utils/uf2conv.py -f $(UF2_FAMILY_ID) -b $(APPLICATION_ADDR) -c -o $@ $(BUILD)/$(PROJECT)-textonly.bin