debug: add scripts to generate v13 Debug ROM contents.

scripts/debug_rom/Makefile

@@ -0,0 +1,31 @@
+# See LICENSE.SiFive for license details
+# Recursive make is bad, but in this case we're cross compiling which is a
+# pretty unusual use case.
+
+CC = $(RISCV)/bin/riscv64-unknown-elf-gcc
+OBJCOPY = $(RISCV)/bin/riscv64-unknown-elf-objcopy
+
+COMPILE = $(CC) -nostdlib -nostartfiles -I$(RISCV)/include/ -Tlink.ld
+
+ELFS = debug_rom
+DEPS = debug_rom.S link.ld
+
+all: $(patsubst %,%.h,$(ELFS))
+
+publish: debug_rom.scala
+	mv $< ../../src/main/scala/uncore/devices/debug/DebugRomContents.scala
+
+%.scala: %.raw
+	xxd -i $^ | sed -e "s/^unsigned char debug_rom_raw\[\] = {/\/\/ This file was auto-generated by 'make publish' in debug\/ directory.\n\npackage uncore.devices\n\nobject DebugRomContents {\n\n  def apply() : Array[Byte] = { Array (/" \
+	-e  "s/};/  ).map(_.toByte) }\n\n}/" \
+	-e  "s/^unsigned int debug_rom_raw_len.*//"  > $@
+
+
+%.raw:	%
+	$(OBJCOPY) -O binary --only-section .text $^ $@
+
+debug_rom:	$(DEPS)
+	$(COMPILE) -o $@ $^
+
+clean:
+	rm -f $(ELFS) debug_rom*.raw debug_rom*.h