ifwitool: Add new tool for managing IFWI images

- Supports following operations:
 1. add raw/dir sub-partition
 2. extract raw/dir sub-partition
 3. print info
 4. delete raw sub-partition
 5. replace raw/dir sub-partition

Change-Id: I683a0ab13cc50eb60eecca34db4a8ffefc8dccbd
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/14896
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

util/cbfstool/Makefile

@@ -10,6 +10,7 @@ OBJCOPY ?= objcopy
 all: $(objutil)/cbfstool/cbfstool \
 	$(objutil)/cbfstool/fmaptool \
 	$(objutil)/cbfstool/rmodtool \
+	$(objutil)/cbfstool/ifwitool \
 
 .PHONY: clean
 clean:
@@ -17,6 +18,7 @@ clean:
 	$(RM) $(objutil)/cbfstool/cbfstool $(cbfsobj)
 	$(RM) $(objutil)/cbfstool/fmaptool $(fmapobj)
 	$(RM) $(objutil)/cbfstool/rmodtool $(rmodobj)
+	$(RM) $(objutil)/cbfstool/ifwitool $(ifwiobj)
 
 linux_trampoline.c: linux_trampoline.S
 	rm -f linux_trampoline.c

util/cbfstool/Makefile.inc

@@ -58,6 +58,10 @@ rmodobj += common.o
 rmodobj += elfheaders.o
 rmodobj += xdr.o
 
+ifwiobj :=
+ifwiobj += ifwitool.o
+ifwiobj += common.o
+
 TOOLCFLAGS ?= -Werror -Wall -Wextra
 TOOLCFLAGS += -Wcast-qual -Wmissing-prototypes -Wredundant-decls -Wshadow
 TOOLCFLAGS += -Wstrict-prototypes -Wwrite-strings
@@ -132,6 +136,10 @@ $(objutil)/cbfstool/rmodtool: $(addprefix $(objutil)/cbfstool/,$(rmodobj))
 	printf "    HOSTCC     $(subst $(objutil)/,,$(@)) (link)\n"
 	$(HOSTCC) $(TOOLLDFLAGS) -o $@ $(addprefix $(objutil)/cbfstool/,$(rmodobj))
 
+$(objutil)/cbfstool/ifwitool: $(addprefix $(objutil)/cbfstool/,$(ifwiobj))
+	printf "    HOSTCC     $(subst $(objutil)/,,$(@)) (link)\n"
+	$(HOSTCC) $(TOOLLDFLAGS) -o $@ $(addprefix $(objutil)/cbfstool/,$(ifwiobj))
+
 # Yacc source is superset of header
 $(objutil)/cbfstool/fmd.o: TOOLCFLAGS += -Wno-redundant-decls
 $(objutil)/cbfstool/fmd_parser.o: TOOLCFLAGS += -Wno-redundant-decls