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2018-04-06image: fit: Show information about OS type in firwmare case tooMichal Simek
SPL ATF implementation requires FIT image with partitions where the one is Firmware/ATF and another one Firmware/U-Boot. OS field is used for recording that difference that's why make sense to show values there for Firmware types. For example: Image 0 (atf) Description: ATF bl31.bin Created: Mon Mar 26 15:58:14 2018 Type: Firmware Compression: uncompressed Data Size: 51152 Bytes = 49.95 KiB = 0.05 MiB Architecture: ARM OS: ARM Trusted Firmware Load Address: 0xfffe0000 Hash algo: md5 Hash value: 36a4212bbb698126bf5a248f0f4b5336 Image 1 (uboot) Description: u-boot.bin Created: Mon Mar 26 15:58:14 2018 Type: Firmware Compression: uncompressed Data Size: 761216 Bytes = 743.38 KiB = 0.73 MiB Architecture: ARM OS: U-Boot Load Address: 0x08000000 Hash algo: md5 Hash value: f22960fe429be72296dc8dc59a47d566 Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jun Nie <jun.nie@linaro.org>
2018-04-06image: fit: Show firmware configuration property if presentMichal Simek
SPL ATF support requires to have firmware property which should be also listed by mkimage -l when images is created. The patch is also using this macro in spl_fit to match keyword. When image is created: Default Configuration: 'config' Configuration 0 (config) Description: ATF with full u-boot Kernel: unavailable Firmware: atf FDT: dtb Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jun Nie <jun.nie@linaro.org> Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2018-03-19SPL: Add signature verification when loading imageJun Nie
U-boot proper signature is not verified by SPL on most platforms even config SPL_FIT_SIGNATURE is enabled. Only fsl-layerscape platform support secure boot in platform specific code. So verified boot cannot be achieved if u-boot proper is loaded by SPL. This patch add signature verification to u-boot proper images when loading FIT image in SPL. It is tested on Allwinner bananapi zero board with H2+ SoC. Signed-off-by: Jun Nie <jun.nie@linaro.org>
2018-01-15fix incorrect usage of DT node unit address in commentsAndre Przywara
The DT spec demands a unit-address in a node name to match the "reg" property in that node. Newer dtc versions will throw warnings if this is not the case. Fix all occurences in the tree where node names were mentioned in comments, to not give bad examples to the reader. Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2017-12-12SPL: Add FIT data-position property supportPeng Fan
For external data, FIT has a optional property "data-position" which can set the external data to a fixed offset to FIT beginning. Add the support for this property in SPL FIT. Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tomas Melin <tomas.melin@vaisala.com> Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Cc: "Andrew F. Davis" <afd@ti.com> Cc: Igor Grinberg <grinberg@compulab.co.il> Cc: "tomas.melin@vaisala.com" <tomas.melin@vaisala.com> Cc: Kever Yang <kever.yang@rock-chips.com> Cc: Andre Przywara <andre.przywara@arm.com> Cc: York Sun <york.sun@nxp.com> Cc: Lokesh Vutla <lokeshvutla@ti.com> Cc: "Cooper Jr., Franklin" <fcooper@ti.com> Cc: George McCollister <george.mccollister@gmail.com> Cc: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Cc: Jean-Jacques Hiblot <jjhiblot@ti.com> Cc: Rick Altherr <raltherr@google.com> Cc: Tom Rini <trini@konsulko.com> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: York Sun <york.sun@nxp.com>
2017-09-15fit: Introduce methods for applying overlays on fit-loadPantelis Antoniou
Introduce an overlay based method for constructing a base DT blob to pass to the kernel. It is based on a specific method now to get the FDT from a FIT image named boot_get_fdt_fit(). Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Acked-by: Simon Glass <sjg@chromium.org>
2017-09-15fit: Do not throw away extra configuration on fit_image_load()Pantelis Antoniou
fit_image_load() threw away the extra configuration parts when loading. We need them around for applying extra overlays for building the boot fdt. Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Acked-by: Simon Glass <sjg@chromium.org>
2017-09-15fit: Allow multiple images per propertyPantelis Antoniou
As part of the fdt overlay support which need it, allow a list of configurations per property. Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Acked-by: Simon Glass <sjg@chromium.org>
2017-01-13splash: add support for loading splash from a FIT imagetomas.melin@vaisala.com
Enable support for loading a splash image from within a FIT image. The image is assumed to be generated with mkimage -E flag to hold the data external to the FIT. Signed-off-by: Tomas Melin <tomas.melin@vaisala.com> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
2016-12-04common: image: Remove FIT header update from image post-processingAndrew F. Davis
After an image is selected out of a FIT blob for further processing we run an optional, platform specific, post-processing function on this component. This post-processing may modify the position and size of the image, so after post-processing we update the location and size for this image in the FIT header. This can cause problems as the position of subsequent components in the FIT blob are only referenced by relative position to the end of the last component. When we resize or move a component the following components position will be calculated incorrectly. To fix this, we do not update the FIT header but instead only update our local understanding of the image data. This also allows us to re-run post-processing steps if needed. Signed-off-by: Andrew F. Davis <afd@ti.com> Tested-by: Carlos Hernandez <ceh@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2016-11-23image-fit: Fix compiling error caused by autoconf.hYork Sun
Commit ec6617c3 includes autoconf.h in image-fit.c, causing conflict for board odroid-xu3 which overwrites CONFIG_SYS_BOARD in header file. Move the include higher and use linux/kconfig.h instead of generated/autoconf.h. Signed-off-by: York Sun <york.sun@nxp.com> CC: Alison Wang <alison.wang@nxp.com>
2016-11-22armv8: Support loading 32-bit OS in AArch32 execution stateAlison Wang
To support loading a 32-bit OS, the execution state will change from AArch64 to AArch32 when jumping to kernel. The architecture information will be got through checking FIT image, then U-Boot will load 32-bit OS or 64-bit OS automatically. Signed-off-by: Ebony Zhu <ebony.zhu@nxp.com> Signed-off-by: Alison Wang <alison.wang@nxp.com> Signed-off-by: Chenhui Zhao <chenhui.zhao@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
2016-10-13libfdt: Sync fdt_for_each_subnode() with upstreamSimon Glass
The signature for this macro has changed. Bring in the upstream version and adjust U-Boot's usages to suit. Signed-off-by: Simon Glass <sjg@chromium.org> Update to drivers/power/pmic/palmas.c: Signed-off-by: Keerthy <j-keerthy@ti.com> Change-Id: I6cc9021339bfe686f9df21d61a1095ca2b3776e8
2016-10-13libfdt: Bring in upstream stringlist functionsSimon Glass
These have now landed upstream. The naming is different and in one case the function signature has changed. Update the code to match. This applies the following upstream commits by Thierry Reding <treding@nvidia.com> : 604e61e fdt: Add functions to retrieve strings 8702bd1 fdt: Add a function to get the index of a string 2218387 fdt: Add a function to count strings Signed-off-by: Simon Glass <sjg@chromium.org>
2016-09-22image-fit: Fix fit_get_node_from_config semanticsPaul Burton
Commit bac17b78dace ("image-fit: switch ENOLINK to ENOENT") changed fit_get_node_from_config to return -ENOENT when a property doesn't exist, but didn't change any of its callers which check return values. Notably it didn't change boot_get_ramdisk, which leads to U-Boot failing to boot FIT images which don't include ramdisks with the following message: Ramdisk image is corrupt or invalid It also didn't take into account that by returning -ENOENT to denote the lack of a property we lost the ability to determine from the return value of fit_get_node_from_config whether it was the property or the configuration node that was missing, which may potentially lead callers to accept invalid FIT images. Fix this by having fit_get_node_from_config return -EINVAL when the configuration node isn't found and -ENOENT when the property isn't found, which seems to make semantic sense. Callers that previously checked for -ENOLINK are adjusted to check for -ENOENT, which fixes the breakage introduced by commit bac17b78dace ("image-fit: switch ENOLINK to ENOENT"). The only other user of the return fit_get_node_from_config return value, indirectly, is bootm_find_os which already checked for -ENOENT. From a read-through of the code I suspect it ought to have been checking for -ENOLINK prior to bac17b78dace ("image-fit: switch ENOLINK to ENOENT") anyway, which would make it right after this patch, but this would be good to get verified by someone who knows this x86 code or is able to test it. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Jonathan Gray <jsg@jsg.id.au> Cc: Marek Vasut <marex@denx.de> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Stefan Roese <sr@denx.de> Acked-by: George McCollister <george.mccollister@gmail.com> Tested-by: George McCollister <george.mccollister@gmail.com>
2016-09-07image-fit: switch ENOLINK to ENOENTJonathan Gray
ENOLINK is not required by POSIX and does not exist on OpenBSD and likely other systems. Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
2016-09-06image-fit: fix fit_image_load() OS checkAndreas Bießmann
Commit 62afc601883e788f3f22291202d5b2a23c1a8b06 introduced fpga image load via bootm but broke the OS check in fit_image_load(). This commit removes following compiler warning: ---8<--- In file included from tools/common/image-fit.c:1: /Volumes/devel/u-boot/tools/../common/image-fit.c:1715:39: warning: use of logical '||' with constant operand [-Wconstant-logical-operand] os_ok = image_type == IH_TYPE_FLATDT || IH_TYPE_FPGA || ^ ~~~~~~~~~~~~ /Volumes/devel/u-boot/tools/../common/image-fit.c:1715:39: note: use '|' for a bitwise operation os_ok = image_type == IH_TYPE_FLATDT || IH_TYPE_FPGA || ^~ | 1 warning generated. --->8--- Signed-off-by: Andreas Bießmann <andreas@biessmann.org> Cc: Michal Simek <michal.simek@xilinx.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
2016-08-12common: image: Add support for post-processing of imagesAndreas Dannenberg
This commit allows injecting a board/platform/device-specific post- processing function into the FIT image data loading process, which can include modifying the size and altering the starting source address of an image data artifact. This might be desired to do things like strip headers or footers attached to the images before they were packaged into the FIT, or to perform operations such as decryption or authentication. Introduce new configuration option CONFIG_FIT_IMAGE_POST_PROCESS to allow controlling this feature. If enabled, a platform-specific post- process function must be provided. Signed-off-by: Andreas Dannenberg <dannenberg@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-25common: fit: Allow U-Boot images to be bootedmario.six@gdsys.cc
In certain circumstances it comes in handy to be able to boot into a second U-Boot. But as of now it is not possible to boot a U-Boot binary that is inside a FIT image, which is problematic for projects that e.g. need to guarantee a unbroken chain of trust from SOC all the way into the OS, since the FIT signing mechanism cannot be used. This patch adds the capability to load such FIT images. An example .its snippet (utilizing signature verification) might look like the following: images { firmware@1 { description = "2nd stage U-Boot image"; data = /incbin/("u-boot-dtb.img.gz"); type = "firmware"; arch = "arm"; os = "u-boot"; compression = "gzip"; load = <0x8FFFC0>; entry = <0x900000>; signature@1 { algo = "sha256,rsa4096"; key-name-hint = "key"; }; }; }; Signed-off-by: Mario Six <mario.six@gdsys.cc> Reviewed-by: Tom Rini <trini@konsulko.com>
2016-06-17common: image-fit: Cleanup spelling mistakesAndreas Dannenberg
The comments in the source file are riddled with spelling mistakes. Be a good citizen and take a stab at cleaning up some of the more obvious ones. Signed-off-by: Andreas Dannenberg <dannenberg@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-05-24image: Add boot_get_fpga() to load fpga with bootmMichal Simek
Add function boot_get_fpga() which find and load bitstream to programmable logic if fpga entry is present. Function is supported on Xilinx devices for full and partial bitstreams in BIN and BIT format. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Remove additional blankline in image.h
2016-05-24mkimage: Report information about fpgaMichal Simek
Add FIT_FPGA_PROP that user can identify an optional entry for fpga. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-05-23image-fit: Don't display an error in fit_set_timestamp()Simon Glass
This function returns an error code and its caller may be able to fix the error. For example fit_handle_file() expands the device tree to fit if there is a lack of space. In this case the caller does not want an error displayed. It is confusing, since it suggests that something is wrong, when it fact everything is fine. Drop the error. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-03-14common: image-fit: Fix load and entry addresses in FIT imageYork Sun
FIT image supports more than 32 bits in addresses by using #address-cell field. Fixing 64-bit support by using this field. Signed-off-by: York Sun <york.sun@nxp.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-03-14common: image-fit: Use a common function to get addressYork Sun
FIT image supports load address and entry address. Getting these addresses can use a common function. Signed-off-by: York Sun <york.sun@nxp.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-03-14Kconfig: Move CONFIG_FIT and related options to KconfigSimon Glass
There are already two FIT options in Kconfig but the CONFIG options are still in the header files. We need to do a proper move to fix this. Move these options to Kconfig and tidy up board configuration: CONFIG_FIT CONFIG_OF_BOARD_SETUP CONFIG_OF_SYSTEM_SETUP CONFIG_FIT_SIGNATURE CONFIG_FIT_BEST_MATCH CONFIG_FIT_VERBOSE CONFIG_OF_STDOUT_VIA_ALIAS CONFIG_RSA Unfortunately the first one is a little complicated. We need to make sure this option is not enabled in SPL by this change. Also this option is enabled automatically in the host builds by defining CONFIG_FIT in the image.h file. To solve this, add a new IMAGE_USE_FIT #define which can be used in files that are built on the host but must also build for U-Boot and SPL. Note: Masahiro's moveconfig.py script is amazing. Signed-off-by: Simon Glass <sjg@chromium.org> [trini: Add microblaze change, various configs/ re-applies] Signed-off-by: Tom Rini <trini@konsulko.com>
2016-02-26Revert "image-fit: Fix signature checking"Simon Glass
This reverts commit 84ca65aa4bd0d03867e9e49805201d0564d3ffb0. On signature verification failures fit_image_verify() should NOT exit with error. Only keys marked 'required' can cause image verification failure. This logic is already there and works correctly. Add a comment to make this clear. Fixes: 84ca65aa (image-fit: Fix signature checking) Signed-off-by: Simon Glass <sjg@chromium.org>
2016-02-26image: Correct the OS location code to work on sandboxSimon Glass
A recent change broke the 'bootm' command on sandbox. The root cause is using a pointer as an address. Conversion from pointer to address needs to use map_to_sysmem() so that sandbox can do the right thing. The problem was pre-existing but uncovered by a recent commit. Fix this. Also move fit_get_end() to the C file to avoid needing to include mapmem.h (and thus asm/io.h) everywhere. Fixes: 1fec3c5d (common/image.c: Make boot_get_ramdisk() perform a check for Android images) Signed-off-by: Simon Glass <sjg@chromium.org>
2015-10-19image-fit: Fix signature checkingAndrej Rosano
On signature verification failures fit_image_verify() should exit with error. Signed-off-by: Andrej Rosano <andrej@inversepath.com>
2015-06-06image-fit: Fix compiler warning in fit_conf_print()Hans de Goede
This fixes the following compiler warning: In file included from tools/common/image-fit.c:1:0: ./tools/../common/image-fit.c: In function ‘fit_conf_print’: ./tools/../common/image-fit.c:1470:27: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses] (const char **)&uname) > 0; Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-05-28add boot_get_loadables() to load listed imagesKarl Apsite
Added a trimmed down instance of boot_get_<thing>() to satisfy the minimum requierments of the added feature. The function follows the normal patterns set by other boot_get<thing>'s, which should make it a bit easier to combine them all together into one boot_get_image() function in a later refactor. Documentation for the new function can be found in source: include/image.h Signed-off-by: Karl Apsite <Karl.Apsite@dornerworks.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-28mkimage will now report information about loadableKarl Apsite
Added FIT_LOADABLE_PROP, so the user can identify an optional entry named "loadables" in their .its configuration. "loadables" is a comma separated list in the .its Documentation can be found in doc/uImage.FIT/source_file_format.txt and doc/uImage.Fit/multi-with-loadables.its Signed-off-by: Karl Apsite <Karl.Apsite@dornerworks.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-04-18common: Make sure arch-specific map_sysmem() is definedJoe Hershberger
In the case where the arch defines a custom map_sysmem(), make sure that including just mapmem.h is sufficient to have these functions as they are when the arch does not override it. Also split the non-arch specific functions out of common.h Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-02-16image: Convert to use fdt_for_each_subnode macroAxel Lin
Use fdt_for_each_subnode macro to simplify the code a bit. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Simon Glass <sjg@chromium.org>
2015-01-29dumpimage: fit: extract FIT imagesGuilherme Maciel Ferreira
The dumpimage is able to extract components contained in a FIT image: $ ./dumpimage -T flat_dt -i CONTAINER.ITB -p INDEX FILE The CONTAINER.ITB is a regular FIT container file. The INDEX is the poisition of the sub-image to be retrieved, and FILE is the file (path+name) to save the extracted sub-image. For example, given the following kernel.its to build a kernel.itb: /dts-v1/; / { ... images { kernel@1 { description = "Kernel 2.6.32-34"; data = /incbin/("/boot/vmlinuz-2.6.32-34-generic"); type = "kernel"; arch = "ppc"; os = "linux"; compression = "gzip"; load = <00000000>; entry = <00000000>; hash@1 { algo = "md5"; }; }; ... }; ... }; The dumpimage can extract the 'kernel@1' node through the following command: $ ./dumpimage -T flat_dt -i kernel.itb -p 0 kernel Extracted: Image 0 (kernel@1) Description: Kernel 2.6.32-34 Created: Wed Oct 22 15:50:26 2014 Type: Kernel Image Compression: gzip compressed Data Size: 4040128 Bytes = 3945.44 kB = 3.85 MB Architecture: PowerPC OS: Linux Load Address: 0x00000000 Entry Point: 0x00000000 Hash algo: md5 Hash value: 22352ad39bdc03e2e50f9cc28c1c3652 Which results in the file 'kernel' being exactly the same as '/boot/vmlinuz-2.6.32-34-generic'. Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
2015-01-14image: Enable OpenRTOS booting via fitImageMarek Vasut
Allow booting the OpenRTOS payloads via fitImage image type. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2014-10-28x86: image: Add new image type for x64_64Simon Glass
This is a bit odd in that we are permitted to boot images for either, even though they are separate architectures. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-25image-fit: make local function staticJeroen Hofstee
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2014-10-22x86: Support loading kernel setup from a FITSimon Glass
Add a new setup@ section to the FIT which can be used to provide a setup binary for booting Linux on x86. This makes it possible to boot x86 from a FIT. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-22sandbox: bootm: Don't fail the architecture checkSimon Glass
Since sandbox is used for testing, it should be able to 'boot' an image from any archhitecture. This allows us to test an image by loading it in sandbox. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-08-28Fix test failure caused by bad handling of ramdiskSimon Glass
Commit e3a5bbce broke the FIT image tests by not loading a ramdisk even if a load address is provided in the FIT. The rationale was that a load address of 0 should be considered to mean 'do not load'. Add a new load operation which supports this feature, so that the ramdisk will be loaded if a non-zero load address is provided. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-19includes: move openssl headers to include/u-bootJeroen Hofstee
commit 18b06652cd "tools: include u-boot version of sha256.h" unconditionally forced the sha256.h from u-boot to be used for tools instead of the host version. This is fragile though as it will also include the host version. Therefore move it to include/u-boot to join u-boot/md5.h etc which were renamed for the same reason. cc: Simon Glass <sjg@chromium.org> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2014-06-19Enhance fit_check_sign to check all imagesSimon Glass
At present this tool only checks the configuration signing. Have it also look at each of the images in the configuration and confirm that they verify. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de> (v1)
2014-06-19Fix small 'case' typo in image-fit.cSimon Glass
This typo makes the comment confusing. Fix it. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-19image: Remove the fit_load_image() property parameterSimon Glass
This can be obtained by looking up the image type, so is redundant. It is better to centralise this lookup to avoid errors. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-19Reverse the meaning of the fit_config_verify() return codeSimon Glass
It is more common to have 0 mean OK, and -ve mean error. Change this function to work the same way to avoid confusion. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-11fdt: Update functions which write to an FDT to return -ENOSPCSimon Glass
When writing values into an FDT it is possible that there will be insufficient space. If the caller gets a useful error then it can potentially deal with the situation. Adjust these functions to return -ENOSPC when the FDT is full. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-21fit: add sha256 supportHeiko Schocher
add sha256 support to fit images Signed-off-by: Heiko Schocher <hs@denx.de> Acked-by: Simon Glass <sjg@chromium.org>
2014-02-19cosmetic: FIT: fix a strange commentMasahiro Yamada
There is a strange comment in fit_image_load(). This function can be used for loading Kernel Image, FDT as well as ramdisk. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
2013-09-20FIT: delete unnecessary castsMasahiro Yamada
Becuase fdt_check_header function takes (const void *) type argument, the argument should be passed to it without being casted to (char *). Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>