pbio/platform/ev3: Vendor in binaries.

These won't be updated frequently, and GitHub storage is not as reliable as it once was.

This also makes it possible to iterate offline. Before, builds would fail after hitting clean once.

See pybricks/support#2262

Author: laurensvalk

bricks/_common/common.mk

@@ -795,22 +795,10 @@ $(BUILD)/firmware-obj.bin: $(BUILD)/firmware.elf
 
 ifeq ($(PB_MCU_FAMILY),TIAM1808)
 
-# REVISIT: downloading things doesn't belong in a Makefile.
-$(BUILD)/u-boot.bin:
-	$(ECHO) "Downloading u-boot.bin"
-	$(Q)mkdir -p $(dir $@)
-	$(Q)curl -sL -o $@ https://github.com/pybricks/u-boot/releases/download/pybricks/v2.0.1/u-boot.bin
-	$(Q)echo "86ddad84f64d8aea85b4315fc1414bdec0bb0d46c92dbd3db45ed599e3a994cb  $@" | sha256sum -c --strict
-$(BUILD)/pru_ledpwm.bin:
-	$(ECHO) "Downloading pru_ledpwm.bin"
-	$(Q)mkdir -p $(dir $@)
-	$(Q)curl -sL -o $@ https://github.com/pybricks/pybricks-pru/releases/download/v1.0.0/pru_ledpwm.bin
-	$(Q)echo "b4f1225e277bb22efa5394ce782cc19a3e2fdd54367e40b9d09e9ca99c6ef6d0  $@" | sha256sum -c --strict
-
 MAKE_BOOTABLE_IMAGE = $(PBTOP)/bricks/ev3/make_bootable_image.py
 
 # For EV3, merge firmware blob with u-boot to create a bootable image.
-$(BUILD)/firmware-base.bin: $(MAKE_BOOTABLE_IMAGE) $(BUILD)/u-boot.bin $(BUILD)/firmware.stripped.elf
+$(BUILD)/firmware-base.bin: $(MAKE_BOOTABLE_IMAGE) $(PBTOP)/lib/pbio/platform/ev3/u-boot.bin $(BUILD)/firmware.stripped.elf
 	$(Q)$^ $@
 
 else
@@ -837,7 +825,7 @@ $(BUILD)/firmware.zip: $(ZIP_FILES)
 $(BUILD)/pru_suart.bin.o: $(PBTOP)/lib/pbio/drv/uart/uart_ev3_pru_lib/pru_suart.bin
 	$(Q)$(OBJCOPY) -I binary -O elf32-littlearm -B arm \
 		--rename-section .data=.pru0,alloc,load,readonly,data,contents $^ $@
-$(BUILD)/pru_ledpwm.bin.o: $(BUILD)/pru_ledpwm.bin
+$(BUILD)/pru_ledpwm.bin.o: $(PBTOP)/lib/pbio/platform/ev3/pru_ledpwm.bin
 	$(Q)$(OBJCOPY) -I binary -O elf32-littlearm -B arm \
 		--rename-section .data=.pru1,alloc,load,readonly,data,contents $^ $@
 

lib/pbio/platform/ev3/.gitignore

@@ -0,0 +1,2 @@
+!pru_ledpwm.bin
+!u-boot.bin