summaryrefslogtreecommitdiff
path: root/Makefile
AgeCommit message (Collapse)AuthorFilesLines
2017-10-06dts: renamed FIT_EMBED to MULTI_DTB_FIT and moved it to the dts KconfigJean-Jacques Hiblot1-1/+1
CONFIG_FIT_EMBED might be confused with CONFIG_OF_EMBED, rename it MULTI_DTB_FIT as it is able to get a DTB from a FIT image containing multiple DTBs. Also move the option to the Kconfig dedicated to the DTS options and create a README for this feature. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-10-03Prepare v2017.11-rc1Tom Rini1-2/+2
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-24dtc: Switch to building and using our own dtc unless providedTom Rini1-8/+2
This makes us act like the Linux Kernel does and allow for dtc to be provided externally but otherwise we use the version of dtc that is included in the sources. This in turn means that we can drop the checkdtc logic. We select DTC in the cases where we will need the dtc tool provided. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-22Makefile: Update minimum dtc version to 1.4.3Tom Rini1-2/+2
With support for overlays and calling the -@ flag to dtc we need to have at least 1.4.3 available now. Cc: Simon Glass <sjg@chromium.org> Reported-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-13kbuild: Enable -fshort-wcharRob Clark1-0/+1
EFI_LOADER really wants UTF-16 strings (ie. %ls and L"string" are 16bit chars instead of 32bit chars). But rather than enabling -fshort-wchar conditionally if EFI_LOADER is enabled, it was deemed preferrable to globally switch. Signed-off-by: Rob Clark <robdclark@gmail.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-09-11Prepare v2017.09Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-06env: Add 'envtools' target to 'make help'Simon Glass1-0/+1
The target is not currently mentioned anywhere. Add it to the help so people can find it. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-09-06env: Fix operation of 'make environ'Simon Glass1-2/+2
This was broken by the recent environment refactoring. Specifically: $ make environ scripts/Makefile.build:59: tools/environ/Makefile: No such file or directory make[1]: *** No rule to make target 'tools/environ/Makefile'. Stop. make: *** [Makefile:1469: environ] Error 2 Fix this by updating the Makefile and adjusting the #include filesnames in two C files. Fixes: ec74f5f (Makefile: Rename 'env' target to 'environ') Reported-by: Måns Rullgård <mans@mansr.com> Signed-off-by: Simon Glass <sjg@chromium.org>
2017-09-05env: Fix out of tree building of tools-allTom Rini1-1/+1
With the move of environment code from common/ to env/ a number of changes needed to be made to various make targets. We missed updating some of the files required for out of tree builds of the tools. Correct the 'environ' target to know that we need to work under tools/env/ still (not tools/environ/) and then update the wrappers in env_attr.c and env_flags.c to point to the new correct file. Reported-by: Peter Robinson <pbrobinson@gmail.com> Tested-by: Peter Robinson <pbrobinson@gmail.com> Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-04Prepare v2017.09-rc4Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-08-29Prepare v2017.09-rc3Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-08-20Makefile: honor PYTHON configuration properlyClément Bœsch1-1/+1
On some systems `python` is `python3` (for instance, Archlinux). The `PYTHON` variable can be used to point to `python2` to have a successful build. The use of `PYTHON` is currently limited in the Makefile and needs to be extended in other places: First, pylibfdt is required to be a Python 2 binding (binman imports pylibfdt and is only compatible Python 2), so its setup.py needs to be called accordingly. An alternative would be to change the libfdt setup.py shebang to python2, but the binding is actually portable. Also, it would break on system where there is no such thing as `python2`. Secondly, the libfdt import checks need to be done against Python 2 as well since the Python 2 compiled modules (in this case _libdft.so) can not be imported from Python 3. Note on the libfdt imports: "@if ! PYTHONPATH=tools $(PYTHON) -c 'import libfdt'; then..." is probably simpler than the currently sub-optimal pipe. Reviewed-by: Jonathan Gray <jsg@jsg.id.au>
2017-08-15Move environment files from common/ to env/Simon Glass1-0/+1
About a quarter of the files in common/ relate to the environment. It seems better to put these into their own subdirectory and remove the prefix. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-08-15Makefile: Rename 'env' target to 'environ'Simon Glass1-2/+2
This target stops us using 'env' as a subdirectory. It is not mentioned in the help so seems to be an internal target. Rename it. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-08-15Prepare v2017.09-rc2Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-08-13spl: dm: Kconfig: split OF_CONTROL and OF_PLATDATA between SPL and TPLPhilipp Tomsich1-1/+2
For the RK3368, we want to use OF_PLATDATA in TPL, but full OF_CONTROL in SPL: this requires the introduction of a new family of configuration options to decouple SPL_OF_CONTROL and SPL_OF_PLATDATA from TPL. Consequently, Makefile.spl needs to be adjusted to test for these configuration items through the $(SPL_TPL_) macro instead of hard-coding the SPL variant. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-08-01Prepare v2017.09-rc1Tom Rini1-2/+2
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-07-30Makefile: Export build date as integerAndy Shevchenko1-0/+2
In some cases we would need build date as integer value. Export U_BOOT_BUILD_DATE as %Y%m%d integer value. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-25Makefile: Allow arch post-link hookPaul Burton1-2/+5
This commit allows an architecture to provide a Makefile.postlink whose u-boot target gets invoked after the u-boot ELF is linked. This will be of use for MIPS in a following commit. This mirrors Linux commit fbe6e37dab97 ("kbuild: add arch specific post-link Makefile"). Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Simon Glass <sjg@chromium.org> Cc: u-boot@lists.denx.de Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Tested-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2017-07-22Makefile: add dependencies to regenerate u-boot.cfg when lostPhilipp Tomsich1-1/+4
When running a 'make clean' or carelessly removing u-boot.cfg, all future make invocations (until autoconf is regenerated) will print an error for a missing u-boot.cfg due to missing rules and dependencies. This commit adds (i) an explicit rule dependency from all (which will invokes the configuration checker) to cfg, and (b) adds a rule to invoke scripts/Makefile.autoconf to regenerate u-boot.cfg. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-22dtc: mkimage: Add the possibility to specify DTCEmmanuel Vadot1-1/+1
FreeBSD recently switch to it's BSDL dtc. While it support most of the features of the GPL one it still lacks the incbin directive. Add the possibility to specify which dtc we want to use for compiling dts and generating fit image. Signed-off-by: Emmanuel Vadot <manu@bidouilliste.com> Acked-by: Simon Glass <sjg@chromium.org>
2017-07-12imx: reorganize IMX code as other SOCsStefano Babic1-3/+3
Change is consistent with other SOCs and it is in preparation for adding SOMs. SOC's related files are moved from cpu/ to mach-imx/<SOC>. This change is also coherent with the structure in kernel. Signed-off-by: Stefano Babic <sbabic@denx.de> CC: Fabio Estevam <fabio.estevam@nxp.com> CC: Akshay Bhat <akshaybhat@timesys.com> CC: Ken Lin <Ken.Lin@advantech.com.tw> CC: Marek Vasut <marek.vasut@gmail.com> CC: Heiko Schocher <hs@denx.de> CC: "Sébastien Szymanski" <sebastien.szymanski@armadeus.com> CC: Christian Gmeiner <christian.gmeiner@gmail.com> CC: Stefan Roese <sr@denx.de> CC: Patrick Bruenn <p.bruenn@beckhoff.com> CC: Troy Kisky <troy.kisky@boundarydevices.com> CC: Nikita Kiryanov <nikita@compulab.co.il> CC: Otavio Salvador <otavio@ossystems.com.br> CC: "Eric Bénard" <eric@eukrea.com> CC: Jagan Teki <jagan@amarulasolutions.com> CC: Ye Li <ye.li@nxp.com> CC: Peng Fan <peng.fan@nxp.com> CC: Adrian Alonso <adrian.alonso@nxp.com> CC: Alison Wang <b18965@freescale.com> CC: Tim Harvey <tharvey@gateworks.com> CC: Martin Donnelly <martin.donnelly@ge.com> CC: Marcin Niestroj <m.niestroj@grinn-global.com> CC: Lukasz Majewski <lukma@denx.de> CC: Adam Ford <aford173@gmail.com> CC: "Albert ARIBAUD (3ADEV)" <albert.aribaud@3adev.fr> CC: Boris Brezillon <boris.brezillon@free-electrons.com> CC: Soeren Moch <smoch@web.de> CC: Richard Hu <richard.hu@technexion.com> CC: Wig Cheng <wig.cheng@technexion.com> CC: Vanessa Maegima <vanessa.maegima@nxp.com> CC: Max Krummenacher <max.krummenacher@toradex.com> CC: Stefan Agner <stefan.agner@toradex.com> CC: Markus Niebel <Markus.Niebel@tq-group.com> CC: Breno Lima <breno.lima@nxp.com> CC: Francesco Montefoschi <francesco.montefoschi@udoo.org> CC: Jaehoon Chung <jh80.chung@samsung.com> CC: Scott Wood <oss@buserror.net> CC: Joe Hershberger <joe.hershberger@ni.com> CC: Anatolij Gustschin <agust@denx.de> CC: Simon Glass <sjg@chromium.org> CC: "Andrew F. Davis" <afd@ti.com> CC: "Łukasz Majewski" <l.majewski@samsung.com> CC: Patrice Chotard <patrice.chotard@st.com> CC: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> CC: Hans de Goede <hdegoede@redhat.com> CC: Masahiro Yamada <yamada.masahiro@socionext.com> CC: Stephen Warren <swarren@nvidia.com> CC: Andre Przywara <andre.przywara@arm.com> CC: "Álvaro Fernández Rojas" <noltari@gmail.com> CC: York Sun <york.sun@nxp.com> CC: Xiaoliang Yang <xiaoliang.yang@nxp.com> CC: Chen-Yu Tsai <wens@csie.org> CC: George McCollister <george.mccollister@gmail.com> CC: Sven Ebenfeld <sven.ebenfeld@gmail.com> CC: Filip Brozovic <fbrozovic@gmail.com> CC: Petr Kulhavy <brain@jikos.cz> CC: Eric Nelson <eric@nelint.com> CC: Bai Ping <ping.bai@nxp.com> CC: Anson Huang <Anson.Huang@nxp.com> CC: Sanchayan Maity <maitysanchayan@gmail.com> CC: Lokesh Vutla <lokeshvutla@ti.com> CC: Patrick Delaunay <patrick.delaunay@st.com> CC: Gary Bisson <gary.bisson@boundarydevices.com> CC: Alexander Graf <agraf@suse.de> CC: u-boot@lists.denx.de Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
2017-07-10Makefile: Build additional binaries for dtb FIT blobs appended to U-bootCooper Jr., Franklin1-2/+16
Add additional make targets and options for building embedded FIT U-boot images. Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-07-10Prepare v2017.07Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-07-04Prepare v2017.07-rc3Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-06-20Prepare v2017.07--rc2Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-06-06Prepare v2017.07-rc1Tom Rini1-2/+2
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-06-02fdt: Makefile: Build python libfdt library if neededSimon Glass1-2/+15
This is needed by binman and dtoc, so if those are being used, check that the library is present and complain if not. Make sure that any error appears on stderr so that buildman notices it. This means that the fallback library (which uses fdtget) will not be used anymore and swig will need to be installed to use binman / dtoc. This affects any board which uses binman (currently sunxi and x86) or dtoc (anything that uses CONFIG_SPL_OF_PLATDATA, currently some rockchip boards). Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-17Makefile: add rules to generate SPL FIT imagesAndre Przywara1-0/+20
Some platforms require more complex U-Boot images than we can easily generate via the mkimage command line, for instance to load additional image files. Introduce a CONFIG_SPL_FIT_SOURCE and CONFIG_SPL_FIT_GENERATOR symbol, which can either hold an .its source file describing the image layout, or, in the second case, a generator tool (script) to create such a source file. This script gets passed the list of device tree files from the CONFIG_OF_LIST variable. A platform or board can define either of those in their defconfig file to allow an easy building of such an image. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
2017-05-15mmc: descend into drivers/mmc only when CONFIG_MMC is enabledMasahiro Yamada1-1/+0
This simplifies makefiles. Also, arrange the order of objects in drivers/mmc/Makefile so that the framework objects are listed before drivers. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-05-10u-boot.elf: add quiet_cmd_u-boot-elf and cmd_u-boot-elfÁlvaro Fernández Rojas1-4/+6
This way we can see output about u-boot.elf being built or not. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-10u-boot.elf: allow overriding entry symbolÁlvaro Fernández Rojas1-1/+4
LD gives the following warning when trying to process u-boot-elf.o warning: cannot find entry symbol __start; defaulting to 0000000080010000 According to gnu-libc the entry symbol for mips is __start and not _start: https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/mips/dl-machine.h;h=ed47513ccc1d23d23d32ee640053d2f351f3990b;hb=HEAD#l258 Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-10u-boot.elf: remove hard-coded arm64 flagsÁlvaro Fernández Rojas1-7/+5
This is needed in order to allow building it for other archs. Move relocation comment to a better place. Remove no longer needed dts FIXME. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-08Prepare v2017.05Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-05-02Prepare v2017.05-rc3Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-04-18Prepare v2017.05-rc2Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-04-13tools: allow to override pythonStefano Babic1-1/+1
Not force to use python from PATH. Issue was noted when building with Yocto, because python from the distro is always taken instead of python-native built during Yocto process. Signed-off-by: Stefano Babic <sbabic@denx.de> CC: Simon Glass <sjg@chromium.org> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-04-10Makefile: Fix linking with modern binutilsJoel Stanley1-0/+4
Since Binutils 1a9ccd70f9a7[1] u-boot will not link targets that set CONFIG_SYS_TEXT_BASE=0 with the following error: LD u-boot arm-linux-gnueabi-ld.bfd: u-boot: Not enough room for program headers, try linking with -N arm-linux-gnueabi-ld.bfd: final link failed: Bad value The issue can be reproduced with the bad binutils and the rock2_defconfig target. This issue was also encountered by the powerpc kernel[2], with the fix being to pass --no-dynamic-linker for linkers newer than 2.26 when this flag was introduced. The option tells ld that the PIE or shared lib does not need loaded program headers. Ubuntu Zesty's Binutils 2.27.51.20161202 hits this error. [1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=1a9ccd70f9a7 [2] https://git.kernel.org/cgit/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=ff45000fcb56b5b0f1a14a865d3541746d838a0a Signed-off-by: Joel Stanley <joel@jms.id.au> [AF: Apply to LDFLAGS_$(SPL_BIN) as well, suggested by Tom Rini] Signed-off-by: Andreas Färber <afaerber@suse.de>
2017-04-07scripts: sunxi: Build an raw SPL imageMaxime Ripard1-0/+3
Introduce a new sunxi-spl-with-ecc.bin image with already the right header, ECC, randomizer and padding for the BROM to be able to read it. It needs to be flashed using a raw access to the NAND so that the controller doesn't change a thing to it, since we already have all the right parameters. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Reviewed-by: Heiko Schocher <hs@denx.de>
2017-04-05Makefile: Correct dependency race condition with TPLSimon Glass1-1/+2
At present we sometimes see the following build error when building on a machine with multiple cores. +make[2]: *** No rule to make target 'dts/dt.dtb', needed by 'tpl/u-boot-tpl.dtb'. Stop. Add a dependency to correct this. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Heiko Stuebner <heiko@sntech.de>
2017-04-05Prepare v2017.05-rc1Tom Rini1-2/+2
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-03-19arm: Migrate SYS_THUMB_BUILD to Kconfig, introduce SPL_SYS_THUMB_BUILDTom Rini1-2/+3
Today, we have cases where we wish to build all of U-Boot in Thumb2 mode for various reasons. We also have cases where we only build SPL in Thumb2 mode due to size constraints and wish to build the rest of the system in ARM mode. So in this migration we introduce a new symbol as well, SPL_SYS_THUMB_BUILD to control if we build everything or just SPL (or in theory, just U-Boot) in Thumb2 mode. Signed-off-by: Tom Rini <trini@konsulko.com> Acked-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
2017-03-13Prepare v2017.03Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-03-09kbuild: turn of dtc unit address warnings by defaultMasahiro Yamada1-1/+1
DTC 1.4.2 or later checks DT unit-address without reg property and vice-versa, and generates lots of warnings. Fixing DT files will take for a while. Until then, let's turn off the check unless building with W=*. Introduce a new helper dtc-option to check if the option is supported in order to suppress warnings on older versions. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-28Prepare v2017-rc3Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-02-13Prepare v2017.03-rc2Tom Rini1-1/+1
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-02-08kbuild: beautify the log of config whitelist checkMasahiro Yamada1-2/+5
Use the kbuild style log. Prior to this commit: ./scripts/check-config.sh u-boot.cfg \ ./scripts/config_whitelist.txt . 1>&2 With this commit: CFGCHK u-boot.cfg Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-02-08cmd: rework "license" commandMasahiro Yamada1-1/+1
The previous commit ("add a new command to show .config contents") improves the basic infrastructure of "embed a compressed file into the U-Boot image, and print it by a command". The same pattern for the "license" command. This commit reworks the command to improve the following: [1] Improve log style Kbuild style log GZIP cmd/license_data.gz CHK cmd/license_data_gz.h UPD cmd/license_data_gz.h CHK cmd/license_data_size.h UPD cmd/license_data_size.h instead of the bare Make log: cat ./Licenses/gpl-2.0.txt | gzip -9 -c | \ tools/bin2header license_gzip > ./include/license.h [2] Collect related code into the "cmd" directory Prior to this commit, the license.h was created by tools/Makefile, placed under the "include" directory, included from cmd/license.c, and deleted by the top-level Makefile. It is not a good idea to scatter related code. [3] Drop the fixed-malloc size LICENSE_MAX Just allocate the minimum required size of buffer because we know the size of the original gpl-2.0.txt. [4] Fix more issues Terminate the buffer with zero to prevent puts() from over-running. Add "static" to do_license. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-02-08cmd: add a new command "config" to show .config contentsMasahiro Yamada1-5/+7
This feature is inspired by /proc/config.gz of Linux. In Linux, if CONFIG_IKCONFIG is enabled, the ".config" file contents are embedded in the kernel image. If CONFIG_IKCONFIG_PROC is also enabled, the ".config" contents are exposed to /proc/config.gz. Users can do "zcat /proc/config.gz" to check which config options are enabled on the running kernel image. The idea is almost the same here; if CONFIG_CMD_CONFIG is enabled, the ".config" contents are compressed and saved in the U-Boot image, then printed by the new command "config". The usage is quite simple. Enable CONFIG_CMD_CONFIG, then run > config from the command line interface. The ".config" contents will be printed on the console. This feature increases the U-Boot image size by about 4KB (this is mostly due to the gzip-compressed .config file). By default, it is enabled only for Sandbox because we do not care about the memory footprint on it. Of course, this feature is architecture agnostic, so you can enable it on any board if the image size increase is acceptable for you. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-02-06x86: Use X86_16BIT_INIT instead of X86_RESET_VECTORSimon Glass1-3/+4
Use this new option to control the location of 16-bit init. This will allow us to place this in SPL if needed. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>