add flash and format for an file on disk

Being able to make an file of the output for testing under
qemu or similar is useful. Copy the card flashing and just
target an IMGFILE= parameteter.

Example:

dd if=/dev/zero of=output.img bs=1G count=8
make IMGFILE=output.img flash-file

Signed-off-by: Ben Dooks <[email protected]>

Author: bjdooks-ct

Makefile

@@ -142,6 +142,16 @@ format-sd: $(SDDEVICE)
 	@test -n "$(SDDEVICE)" || (echo 'SDDEVICE must be set, Ex: make flash-sdcard SDDEVICE=/dev/sdc' && exit 1)
 	sgdisk --clear -g --new=1:$(FWPAYLOAD_SECTORSTART):$(FWPAYLOAD_SECTOREND) --new=2:$(UIMAGE_SECTORSTART):${UIMAGE_SECTOREND} --typecode=1:3000 --typecode=2:8300 $(SDDEVICE)
 
+# flash-file and format-file are basically the same as the sdcard ones but aum to use a file
+
+flash-file: format-file
+	dd if=$(RISCV)/fw_payload.bin of=$(IMGFILE) seek=${FWPAYLOAD_SECTORSTART} status=progress conv=notrunc bs=512
+	dd if=$(RISCV)/uImage         of=$(IMGFILE) seek=$(UIMAGE_SECTORSTART) status=progress conv=notrunc bs=1
+
+format-file:
+	@test -n "$(IMGFILE)" || (echo 'IMGFILE must be set, Ex: make format-file IMGFILE=output.img' && exit 1)
+	sgdisk --clear -g --new=1:$(FWPAYLOAD_SECTORSTART):$(FWPAYLOAD_SECTOREND) --new=2:$(UIMAGE_SECTORSTART):${UIMAGE_SECTOREND} --typecode=1:3000 --typecode=2:8300 $(IMGFILE)
+
 # specific recipes
 gcc: $(CC)
 vmlinux: $(RISCV)/vmlinux