Add image updating support. When selecting it, it

expects a coreboot.rom to be available, and adds the files to it.

It has no idea how to replace files, it merely adds them. It only works
with Tinybootblock and the bootblock is immutable.

The "clean" rules allow "make clean-for-update", which
removes everything but coreboot.rom

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Peter Stuge <peter@stuge.se>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5103 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

Makefile

@@ -284,15 +284,19 @@ doxyclean: doxygen-clean
 doxygen-clean:
 	rm -rf $(DOXYGEN_OUTPUT_DIR)
 
-clean: doxygen-clean
-	rm -f $(allobjs) $(obj)/coreboot* .xcompile
+clean-for-update: doxygen-clean
+	rm -f $(objs) $(initobjs) $(drivers) $(smmobjs) .xcompile
+	rm -f $(obj)/coreboot_ram* $(obj)/coreboot.romstage $(obj)/coreboot.pre* $(obj)/coreboot.bootblock $(obj)/coreboot.a
 	rm -rf $(obj)/bootblock* $(obj)/romstage* $(obj)/location.*
-	rm -f $(obj)/option_table.* $(obj)/crt0_includes.h $(obj)/ldscript
+	rm -f $(obj)/option_table.* $(obj)/crt0_includes.h $(obj)/ldscript $(obj)/config.h
 	rm -f $(obj)/mainboard/$(MAINBOARDDIR)/static.c $(obj)/mainboard/$(MAINBOARDDIR)/config.py $(obj)/mainboard/$(MAINBOARDDIR)/static.dot
 	rm -f $(obj)/mainboard/$(MAINBOARDDIR)/auto.inc $(obj)/mainboard/$(MAINBOARDDIR)/crt0.s $(obj)/mainboard/$(MAINBOARDDIR)/crt0.disasm
 	rmdir -p $(alldirs) 2>/dev/null >/dev/null || true
 	$(MAKE) -C util/sconfig clean
 
+clean: clean-for-update
+	rm -f $(obj)/coreboot*
+
 distclean: clean
 	rm -rf $(obj)
 	rm -f .config .config.old ..config.tmp .kconfig.d .tmpconfig*

src/arch/i386/Kconfig

@@ -49,6 +49,16 @@ config BIG_BOOTBLOCK
 	default n if TINY_BOOTBLOCK
 	default y
 
+config UPDATE_IMAGE
+	bool "Update existing coreboot.rom image"
+	default n
+	depends on TINY_BOOTBLOCK
+	help
+		If this option is activate, no new coreboot.rom file
+		is created. Instead it is expected that there already
+		is a suitable file for further processing.
+		The bootblock will not be modified.
+
 config ROMCC
 	bool
 	default n

src/arch/i386/Makefile.tinybootblock.inc

@@ -3,9 +3,14 @@ ifdef POST_EVALUATION
 #######################################################################
 # Build the final rom image
 
+ifneq ($(CONFIG_UPDATE_IMAGE),y)
 $(obj)/coreboot.pre1: $(obj)/coreboot.bootblock $(CBFSTOOL)
 	rm -f $@
 	$(CBFSTOOL) $@ create $(CONFIG_COREBOOT_ROMSIZE_KB)K $(obj)/coreboot.bootblock
+else
+$(obj)/coreboot.pre1: $(CBFSTOOL)
+	mv $(obj)/coreboot.rom $@
+endif
 
 $(obj)/coreboot.pre: $(obj)/coreboot.romstage $(obj)/coreboot.pre1 $(CBFSTOOL)
 	rm -f $@