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Add dumpimage, a tool to extract data from U-Boot images

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Given a multi-file image created through the mkimage's -d option:

  $ mkimage -A x86 -O linux -T multi -n x86 -d vmlinuz:initrd.img:System.map \
  multi.img

  Image Name:   x86
  Created:      Thu Jul 25 10:29:13 2013
  Image Type:   Intel x86 Linux Multi-File Image (gzip compressed)
  Data Size:    13722956 Bytes = 13401.32 kB = 13.09 MB
  Load Address: 00000000
  Entry Point:  00000000
  Contents:
     Image 0: 4040128 Bytes = 3945.44 kB = 3.85 MB
     Image 1: 7991719 Bytes = 7804.41 kB = 7.62 MB
     Image 2: 1691092 Bytes = 1651.46 kB = 1.61 MB

It is possible to perform the innverse operation -- extracting any file from
the image -- by using the dumpimage's -i option:

  $ dumpimage -i multi.img -p 2 System.map

Although it's feasible to retrieve "data files" from image through scripting,
the requirement to embed tools such 'dd', 'awk' and 'sed' for this sole purpose
is cumbersome and unreliable -- once you must keep track of file sizes inside
the image. Furthermore, extracting data files using "dumpimage" tool is faster
than through scripting.

Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Guilherme Maciel Ferreira
2013-12-01 12:43:11 -07:00
committed by Tom Rini
parent f86ed6a8d5
commit a804b5ce2d
8 changed files with 444 additions and 0 deletions
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26
tools/Makefile
View File

@@ -50,6 +50,7 @@ BIN_FILES-$(CONFIG_BUILD_ENVCRC) += envcrc$(SFX)
BIN_FILES-$(CONFIG_CMD_NET) += gen_eth_addr$(SFX)
BIN_FILES-$(CONFIG_CMD_LOADS) += img2srec$(SFX)
BIN_FILES-$(CONFIG_XWAY_SWAP_BYTES) += xway-swap-bytes$(SFX)
BIN_FILES-y += dumpimage$(SFX)
BIN_FILES-y += mkenvimage$(SFX)
BIN_FILES-y += mkimage$(SFX)
BIN_FILES-$(CONFIG_EXYNOS5250) += mk$(BOARD)spl$(SFX)
@@ -72,6 +73,7 @@ EXT_OBJ_FILES-y += lib/sha1.o
# Source files located in the tools directory
NOPED_OBJ_FILES-y += aisimage.o
NOPED_OBJ_FILES-y += default_image.o
NOPED_OBJ_FILES-y += dumpimage.o
NOPED_OBJ_FILES-y += fit_image.o
NOPED_OBJ_FILES-y += image-host.o
NOPED_OBJ_FILES-y += imximage.o
@@ -200,6 +202,30 @@ $(obj)xway-swap-bytes$(SFX): $(obj)xway-swap-bytes.o
$(HOSTCC) $(HOSTCFLAGS) $(HOSTLDFLAGS) -o $@ $^
$(HOSTSTRIP) $@
$(obj)dumpimage$(SFX): $(obj)aisimage.o \
$(FIT_SIG_OBJS) \
$(obj)crc32.o \
$(obj)default_image.o \
$(obj)fit_image.o \
$(obj)image-fit.o \
$(obj)image.o \
$(obj)image-host.o \
$(obj)imagetool.o \
$(obj)imximage.o \
$(obj)kwbimage.o \
$(obj)dumpimage.o \
$(obj)md5.o \
$(obj)mxsimage.o \
$(obj)omapimage.o \
$(obj)os_support.o \
$(obj)pblimage.o \
$(obj)sha1.o \
$(obj)ublimage.o \
$(LIBFDT_OBJS) \
$(RSA_OBJS)
$(HOSTCC) $(HOSTCFLAGS) $(HOSTLDFLAGS) -o $@ $^ $(HOSTLIBS)
$(HOSTSTRIP) $@
$(obj)mkenvimage$(SFX): $(obj)crc32.o $(obj)mkenvimage.o \
$(obj)os_support.o
$(HOSTCC) $(HOSTCFLAGS) $(HOSTLDFLAGS) -o $@ $^