FiiO M3K: New bootloader

SPL and UCL-compressed bootloader are now packed into one output,
bootloader.m3k, eliminating the separate SPL build phase.

The Rockbox bootloader now has a recovery menu, accessible by
holding VOL+ when booting, that lets you back up, restore, and
update the bootloader from the device.

Change-Id: I642c6e5fb83587a013ab2fbfd1adab439561ced2

firmware/target/mips/ingenic_x1000/x1000boot.make

@@ -0,0 +1,53 @@
+#             __________               __   ___.
+#   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+#   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+#   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+#   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+#                     \/            \/     \/    \/            \/
+# $Id$
+#
+
+INCLUDES += -I$(APPSDIR)
+SRC += $(call preprocess, $(APPSDIR)/SOURCES)
+
+LDSDEP := $(FIRMDIR)/export/cpu.h $(FIRMDIR)/export/config/$(MODELNAME).h
+
+BOOTLDS := $(FIRMDIR)/target/$(CPU)/$(MANUFACTURER)/boot.lds
+BOOTLINK := $(BUILDDIR)/boot.link
+
+SPLLDS := $(FIRMDIR)/target/$(CPU)/$(MANUFACTURER)/spl.lds
+SPLLINK := $(BUILDDIR)/spl.link
+
+CLEANOBJS += $(BUILDDIR)/bootloader.* $(BUILDDIR)/spl.*
+
+include $(FIRMDIR)/target/$(CPU)/$(MANUFACTURER)/$(MODELNAME)/boot.make
+
+.SECONDEXPANSION:
+
+$(BOOTLINK): $(BOOTLDS) $(LDSDEP)
+	$(call PRINTS,PP $(@F))
+	$(call preprocess2file,$<,$@,)
+
+$(BUILDDIR)/bootloader.elf: $$(OBJ) $(FIRMLIB) $(CORE_LIBS) $$(BOOTLINK)
+	$(call PRINTS,LD $(@F))$(CC) $(GCCOPTS) -Os -nostdlib -o $@ $(OBJ) \
+		-L$(BUILDDIR)/firmware -lfirmware \
+		-L$(BUILDDIR)/lib $(call a2lnk, $(CORE_LIBS)) \
+		-lgcc -T$(BOOTLINK) $(GLOBAL_LDOPTS) \
+		-Wl,--gc-sections -Wl,-Map,$(BUILDDIR)/bootloader.map
+
+$(BUILDDIR)/bootloader.bin: $(BUILDDIR)/bootloader.elf
+	$(call PRINTS,OC $(@F))$(call objcopy,$<,$@)
+
+$(SPLLINK): $(SPLLDS) $(LDSDEP)
+	$(call PRINTS,PP $(@F))
+	$(call preprocess2file,$<,$@,)
+
+$(BUILDDIR)/spl.elf: $$(OBJ) $(FIRMLIB) $(CORE_LIBS) $$(SPLLINK)
+	$(call PRINTS,LD $(@F))$(CC) $(GCCOPTS) -Os -nostdlib -o $@ $(OBJ) \
+		-L$(BUILDDIR)/firmware -lfirmware \
+		-L$(BUILDDIR)/lib $(call a2lnk, $(CORE_LIBS)) \
+		-lgcc -T$(SPLLINK) $(GLOBAL_LDOPTS) \
+		-Wl,--gc-sections -Wl,-Map,$(BUILDDIR)/spl.map
+
+$(BUILDDIR)/spl.bin: $(BUILDDIR)/spl.elf
+	$(call PRINTS,OC $(@F))$(call objcopy,$<,$@)