util/cbfstool: Add cbfs-compression-tool

cbfs-compression-tool provides a way to benchmark the compression
algorithms as used by cbfstool (and coreboot) and allows to
pre-compress data for later consumption by cbfstool (once it supports
the format).

For an impression, the benchmark's results on my machine:

measuring 'none'
compressing 10485760 bytes to 10485760 took 0 seconds
measuring 'LZMA'
compressing 10485760 bytes to 1736 took 2 seconds
measuring 'LZ4'
compressing 10485760 bytes to 41880 took 0 seconds

And a possible use for external compression, parallel and non-parallel
(60MB in 53 files compressed to 650KB on a machine with 40 threads):

$ time (ls -1 *.* |xargs -n 1 -P $(nproc) -I '{}' cbfs-compression-tool compress '{}' out/'{}' LZMA)

real	0m0.786s
user	0m11.440s
sys	0m0.044s

$ time (ls -1 *.* |xargs -n 1 -P 1 -I '{}' cbfs-compression-tool compress '{}' out/'{}' LZMA)

real	0m10.444s
user	0m10.280s
sys	0m0.064s

Change-Id: I40be087e85d09a895b1ed277270350ab65a4d6d4
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/18099
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

util/cbfstool/Makefile.inc

@@ -1,7 +1,20 @@
+compressionobj :=
+compressionobj += compress.o
+# LZ4
+compressionobj += lz4.o
+compressionobj += lz4hc.o
+compressionobj += lz4frame.o
+compressionobj += xxhash.o
+compressionobj += lz4_wrapper.o
+# LZMA
+compressionobj += lzma.o
+compressionobj += LzFind.o
+compressionobj += LzmaDec.o
+compressionobj += LzmaEnc.o
+
 cbfsobj :=
 cbfsobj += cbfstool.o
 cbfsobj += common.o
-cbfsobj += compress.o
 cbfsobj += cbfs_image.o
 cbfsobj += cbfs-mkstage.o
 cbfsobj += cbfs-mkpayload.o
@@ -13,24 +26,13 @@ cbfsobj += partitioned_file.o
 # COMMONLIB
 cbfsobj += cbfs.o
 cbfsobj += fsp_relocate.o
-cbfsobj += lz4_wrapper.o
 cbfsobj += mem_pool.o
 cbfsobj += region.o
-# LZMA
-cbfsobj += lzma.o
-cbfsobj += LzFind.o
-cbfsobj += LzmaDec.o
-cbfsobj += LzmaEnc.o
 # CRYPTOLIB
 cbfsobj += 2sha_utility.o
 cbfsobj += 2sha1.o
 cbfsobj += 2sha256.o
 cbfsobj += 2sha512.o
-# LZ4
-cbfsobj += lz4.o
-cbfsobj += lz4hc.o
-cbfsobj += lz4frame.o
-cbfsobj += xxhash.o
 # FMAP
 cbfsobj += fmap.o
 cbfsobj += kv_pair.o
@@ -38,6 +40,8 @@ cbfsobj += valstr.o
 # linux as payload
 cbfsobj += linux_trampoline.o
 cbfsobj += cbfs-payload-linux.o
+# compression algorithms
+cbfsobj += $(compressionobj)
 
 fmapobj :=
 fmapobj += fmaptool.o
@@ -62,6 +66,10 @@ ifwiobj :=
 ifwiobj += ifwitool.o
 ifwiobj += common.o
 
+cbfscompobj :=
+cbfscompobj += $(compressionobj)
+cbfscompobj += cbfscomptool.o
+
 TOOLCFLAGS ?= -Werror -Wall -Wextra
 TOOLCFLAGS += -Wcast-qual -Wmissing-prototypes -Wredundant-decls -Wshadow
 TOOLCFLAGS += -Wstrict-prototypes -Wwrite-strings
@@ -141,6 +149,10 @@ $(objutil)/cbfstool/ifwitool: $(addprefix $(objutil)/cbfstool/,$(ifwiobj))
 	printf "    HOSTCC     $(subst $(objutil)/,,$(@)) (link)\n"
 	$(HOSTCC) $(TOOLLDFLAGS) -o $@ $(addprefix $(objutil)/cbfstool/,$(ifwiobj))
 
+$(objutil)/cbfstool/cbfs-compression-tool: $(addprefix $(objutil)/cbfstool/,$(cbfscompobj))
+	printf "    HOSTCC     $(subst $(objutil)/,,$(@)) (link)\n"
+	$(HOSTCC) $(TOOLLDFLAGS) -o $@ $(addprefix $(objutil)/cbfstool/,$(cbfscompobj))
+
 # Yacc source is superset of header
 $(objutil)/cbfstool/fmd.o: TOOLCFLAGS += -Wno-redundant-decls
 $(objutil)/cbfstool/fmd_parser.o: TOOLCFLAGS += -Wno-redundant-decls