# PlatformIO artifacts to merge into a 16 MB ESP32-C3 flash image.
# Canonical firmware: https://github.com/crosspoint-reader/crosspoint-reader
FIRMWARE_DIR ?= ../crosspoint-reader/.pio/build/default
SD_SRC ?= ../crosspoint-reader/sdcard
QEMU_SRC ?= _scratch/qemu-src
QEMU_BIN = $(QEMU_SRC)/build/qemu-system-riscv32

.PHONY: firmware sdimage qemu run run-upstream chip clean

firmware:
	esptool --chip esp32c3 merge-bin -o flash.bin \
	  0x0 $(FIRMWARE_DIR)/bootloader.bin \
	  0x8000 $(FIRMWARE_DIR)/partitions.bin \
	  0x10000 $(FIRMWARE_DIR)/firmware.bin
	truncate -s 16M flash.bin
	cp $(FIRMWARE_DIR)/firmware.elf firmware.elf

# Local-disk implementation of the SD block interface.
sdimage:
	scripts/mksd.sh $(SD_SRC) sd.img

qemu:
	QEMU_SRC=$(QEMU_SRC) scripts/build-qemu.sh

# Patched xteink X3 machine. Add `-display none` for a headless run.
run: qemu
	$(QEMU_BIN) -machine xteink-x3 -L $(QEMU_SRC)/pc-bios \
	  -serial stdio -drive file=flash.bin,if=mtd,format=raw \
	  $(if $(wildcard sd.img),-drive file=sd.img,if=sd,format=raw)

# Unpatched release binary retained as the fast generic ESP32-C3 baseline.
run-upstream:
	nix run .#run-upstream -- flash.bin

# Legacy Wokwi protocol model; retained as a small host-tested reference.
chip:
	$(MAKE) -C chip

clean:
	$(MAKE) -C chip clean
	rm -f flash.bin flash16.bin firmware.elf
