[U-Boot] is it possilbe to have uboot find the kernel in the file system?

[Jeroen Hofstee]

Hello John,

On 01/04/2013 07:19 PM, John Stile wrote:
> On Fri, 2013-01-04 at 09:00 +0100, Wolfgang Denk wrote:
>> Dear John Stile,
>>
>> In message <1357265217.7939.131.camel at genx> you wrote:
>>> u-boot-2012.10.tar.bz2  does not have support for the at91sam9g20ek
>>> I treid to apply my patches for u-boot-1.3.4, but they are way too old.
>>> Is there a newer patch set?
>> I see the following board configurations supported in current mainline
>> code: at91sam9g20ek_nandflash, at91sam9g20ek_dataflash_cs0, and
>> at91sam9g20ek_dataflash_cs1 .  Anything wrong with those?
note the trailing _nandflash, _dataflash_cs0 etc.
> I'm going to have to wrestle with buildroot's uboot configuration or
> something... But it would be helpful to know what he build error means.
>
> my buildroot .config sets:
> BR2_TARGET_UBOOT=y
> BR2_TARGET_UBOOT_BOARDNAME="at91sam9g20ek"
> BR2_TARGET_UBOOT_CUSTOM_TARBALL=y
> BR2_TARGET_UBOOT_CUSTOM_TARBALL_LOCATION="ftp://ftp.denx.de/pub/u-boot/u-boot-2012.10.tar.bz2"
> BR2_TARGET_UBOOT_VERSION="custom"
> BR2_TARGET_UBOOT_FORMAT_BIN=y
> BR2_TARGET_AT91BOOTSTRAP=y
> BR2_TARGET_AT91BOOTSTRAP_BOARD="at91sam9g20ek"
> BR2_TARGET_AT91BOOTSTRAP_DATAFLASH=y
> BR2_TARGET_AT91BOOTSTRAP_MEMORY="dataflash"
>
> uboot build error:
>>>> uboot custom Configuring
> PATH="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/bin:/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin:/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/sbin/:/home/jstile/Komodo-Edit-7/bin:/home/jstile/Komodo-Edit-7/bin:/usr/local/bin:/usr/bin:/bin:/opt/bin:/usr/x86_64-pc-linux-gnu/gcc-bin/4.5.4:/usr/games/bin:/home/jstile/bin:/home/jstile/bin" AR="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-ar" AS="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-as" LD="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-ld" NM="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-nm" CC="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-gcc" GCC="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-lin
>   ux-uclibcgnueabi-gcc" CPP="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-cpp" CXX="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-g++" FC="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-gfortran" RANLIB="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-ranlib" STRIP="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-strip" OBJCOPY="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-objcopy" OBJDUMP="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-objdump" AR_FOR_BUILD="/usr/bin/ar" AS_FOR_BUILD="/usr/bin/as" CC_FOR_BUILD="/usr/bin/gcc" GCC_FOR_BUILD="/usr/bin/gcc" CXX_FOR_BUILD="/usr/bin/g++" FC_FOR_BUILD="/usr/bin/ld" LD_FOR_BUILD="/usr/bin/ld" C
>   FLAGS_FOR_BUILD="-O2 -I/home/jstile/svn_rmserver/buildroot-2011.11/output/host/include -I/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/include" CXXFLAGS_FOR_BUILD="-I/home/jstile/svn_rmserver/buildroot-2011.11/output/host/include -I/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/include" LDFLAGS_FOR_BUILD="-L/home/jstile/svn_rmserver/buildroot-2011.11/output/host/lib -L/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/lib -Wl,-rpath,/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/lib" FCFLAGS_FOR_BUILD="" DEFAULT_ASSEMBLER="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-as" DEFAULT_LINKER="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-ld" CFLAGS="-pipe -Os  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64" CXXFLAGS="-pipe -Os  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64" LDFLAGS="" FCFLAGS="" P
>   KG_CONFIG="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/pkg-config" PERLLIB="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/lib/perl" STAGING_DIR="/home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/arm-unknown-linux-uclibcgnueabi/sysroot" CONFIG_NOSOFTFLOAT=1 /usr/bin/make -j2 -C /home/jstile/svn_rmserver/buildroot-2011.11/output/build/uboot-custom CROSS_COMPILE=" /home/jstile/svn_rmserver/buildroot-2011.11/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-" ARCH=arm at91sam9g20ek_config
last word, misses the _nandflash, you should get it there somehow..
> make[1]: Entering directory `/home/jstile/svn_rmserver/buildroot-2011.11/output/build/uboot-custom'
> make[1]: Leaving directory `/home/jstile/svn_rmserver/buildroot-2011.11/output/build/uboot-custom'
> make[1]: Entering directory `/home/jstile/svn_rmserver/buildroot-2011.11/output/build/uboot-custom'
> make: *** No rule to make target `at91sam9g20ek_config'.  Stop.
> make[1]: *** [at91sam9g20ek_config] Error 1
> make[1]: Leaving directory `/home/jstile/svn_rmserver/buildroot-2011.11/output/build/uboot-custom'
> make: *** [/home/jstile/svn_rmserver/buildroot-2011.11/output/build/uboot-custom/.stamp_configured] Error 2
>
> What should the target be?
one of the ones listed in boards.cfg with _config appended, e.g. 
at91sam9g20ek_nandflash_config
> Maybe my buildroot is also so old it doesn't support the new uboot
> configuration syntax?
no idea, since I don't use buildroot, but you might get around it by setting

BR2_TARGET_UBOOT_BOARDNAME="at91sam9g20ek_nandflash"


Regards,,
Jeroen