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Re: [ts-7000] Re: Rebuilding a kernel (using ubuntu 8.10 - switch to 8.

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Subject: Re: [ts-7000] Re: Rebuilding a kernel (using ubuntu 8.10 - switch to 8.04?)
From: Jordi Soucheiron <>
Date: Wed, 11 Feb 2009 10:23:57 +0100
I always use the zImage. But vmlinux.bin should work too

2009/2/11 ts7300 <>:
> I have doubt After compilation is VMLINUX.BIN is the final image file
> we have to dump into SD CARD.
>
> --- In  "ian_mccrum_mi5afl" <> wrote:
>>
>> I note you are using ubuntu 8.10, I have been compiling the kernel and
>> complete ramdisk image for the the cirrus development EDB9307a board
>> using ubuntu 8.04. When I rebuilt my laptop for Ubunutu 8.10 I have
>> had many problems - including the PATH_MAX problem you had.
>>
>> This error is easy to get around - either #include <limits.h> or just
>> #define PATH_MAX with a number - I stuck in 4096 but you'd need to
>> check that value... not sure if the filesystem on the flash has a
>> limit hard coded.
>>
>> The next bug I got on my system was that something was wrong with ar
>> when archiving a zlib library.
>> ...
>> ar rc libz.a adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o
>> trees.o zutil.o inflate.o infback.o inftrees.o inffast.o
>> ...
>> ar: error while loading shared libraries:
>> libz.so.1: ELF file OS ABI invalid
>>
>> At this stage I decided to switch back to ubuntu 8.04.
>>
>> Perhaps you should as well?
>>
>> I do realise the TS products may be different but thought my
>> infomation might be of use to you - I read this group sporadically as
>> I have TS7200 and TS7400 boards but am using the EDB99307a because of
>> its builtin LCD interface. (http://arm.cirrus.com)
>>
>> Regards
>> Ian McCrum, lecturer, University of Ulster
>>
>> __
>>
>>
>> --- In  "Anouk Ahamitet" <snowcone27@> wrote:
>> >
>> > We asked Technologic for instructions when we wanted to change the
> timer
>> > resolution from 10ms to 1ms (by changing CONFIG_HZ from 100 to 1000 in
>> > the kernel build settings). I thought that others in this group would
>> > be interested in the steps for rebuilding the kernel that we got from
>> > Technologic:
>> >
>> > In order to build a TS-7800 Kernel:
>> >
>> > 1) Download the Kernel:
>> >
>> >
>> >
>>
> <ftp://oz.embeddedarm.com/ts-arm-sbc/ts-7800-linux/sources/linux-2.6.21-\
>> > ts-src-latest.tar.gz>
>> >
>>
> <ftp://oz.embeddedarm.com/ts-arm-sbc/ts-7800-linux/sources/linux-2.6.21-\
>> > ts-src-latest.tar.gz%20>
>> >
>>
> <ftp://oz.embeddedarm.com/ts-arm-sbc/ts-7800-linux/sources/linux-2.6.21-\
>> > ts-src-latest.tar.gz>
>> >
>>
> <ftp://oz.embeddedarm.com/ts-arm-sbc/ts-7800-linux/sources/linux-2.6.21-\
>> > ts-sr>
>> >
>>
> ftp://oz.embeddedarm.com/ts-arm-sbc/ts-7800-linux/sources/linux-2.6.21-t\
>> > s-src-latest.tar.gz
>> >
>>
> <ftp://oz.embeddedarm.com/ts-arm-sbc/ts-7800-linux/sources/linux-2.6.21-\
>> > ts-src-latest.tar.gz>
>> >
>> > 2) Download the Crosstool:
>> >
>> >
>> >
>>
> <ftp://oz.embeddedarm.com/ts-arm-sbc/ts-7800-linux/cross-toolchains/ts78\
>> > 00-crosstool-linux-gnueabi-2005q3-2.tar.gz>
>> >
>>
> <ftp://oz.embeddedarm.com/ts-arm-sbc/ts-7800-linux/cross-toolchains/ts78\
>> > 00-cr>
>> >
>>
> ftp://oz.embeddedarm.com/ts-arm-sbc/ts-7800-linux/cross-toolchains/ts780\
>> > 0-crosstool-linux-gnueabi-2005q3-2.tar.gz
>> >
>>
> <ftp://oz.embeddedarm.com/ts-arm-sbc/ts-7800-linux/cross-toolchains/ts78\
>> > 00-crosstool-linux-gnueabi-2005q3-2.tar.gz%20%20>
>> >
>> > 3) Install/Extract both on a Linux X86 box
>> >
>> > 4) Adjust the Makefile of the Kernel to use the right CROSSTOOL
>> >
>> > 5) Compile the kernel:
>> >
>> > # make ts7800_defconfig
>> > # make
>> >
>> > 6) The new kernel will show up at arch/arm/boot/Image
>> >
>> > In order to ensure that I didn't have any extras to mess things up, I
>> > installed a fresh, clean Ubuntu 8.10 system where I would perform the
>> > steps above. I made sure that it had all of the current updates.
> I did
>> > all of the steps under my non-root account (I asked and was
> assured that
>> > despite the indication that root was running the make commands in the
>> > instructions, I didn't need to be root to build their kernel). In
>> > between steps 4 and 5, I edited arch/arm/config/ts7800_defconfig and
>> > arch/arm/config/ts7800full_defconfig to change CONFIG_HZ=100 to
>> > CONFIG_HZ=1000 in both (since I wasn't positive which would be used).
>> >
>> > The first make ran fine, with just a few warnings. But the second
> make
>> > fails with this output:
>> >
>> > scripts/kconfig/conf -s arch/arm/Kconfig
>> > drivers/crypto/cesa/Kconfig:16:warning: type of 'MV_CESA_TEST'
> redefined
>> > from 'tristate' to 'boolean'
>> > CHK include/linux/version.h
>> > SYMLINK include/asm-arm/arch -> include/asm-arm/arch-mv88fxx81
>> > make[1]: `include/asm-arm/mach-types.h' is up to date.
>> > CHK include/linux/utsrelease.h
>> > HOSTCC scripts/mod/sumversion.o
>> > scripts/mod/sumversion.c: In function `get_src_version':
>> > scripts/mod/sumversion.c:384: error: `PATH_MAX' undeclared
>> > (first use in this function)
>> > scripts/mod/sumversion.c:384: error: (Each undeclared identifier is
>> > reported only once
>> > scripts/mod/sumversion.c:384: error: for each function it appears in.)
>> > scripts/mod/sumversion.c:384: warning: unused variable
>> > `filelist'
>> > make[2]: *** [scripts/mod/sumversion.o] Error 1
>> > make[1]: *** [scripts/mod] Error 2
>> > make: *** [scripts] Error 2
>> >
>> >
>> > I found a simple patch at
>> > m("/msg02788.html","//www.mail-archive.com/linux-arch");">http:
>> > <m("/msg02788.html","//www.mail-archive.com/linux-arch");">http:>
>> > (a required header was not included) and now the kernel builds.
>> >
>> > HOWEVER...
>> >
>> > The fact that the source Technologic told me to download from
> their site
>> > did not build makes me wonder if the source contains all of the other
>> > adjustments they've make (which include several things for the 7800),
>> > since they obviously have never actually used the source that they
> make
>> > available for download. If they had, they'd know that it doesn't
>> > compile as-is.
>> >
>> > When I reporting the bug, the fix and asked my contact at Technologic
>> > about this, he told me that I probably needed to run make
> menuconfig to
>> > change a setting (but he didn't say which one that might be) so
> that the
>> > broken file is not included. If that is true, then it concerns me
> even
>> > more than the bug, because I wanted to start with exactly the same
>> > settings as Technologic so that the kernel we built as just like
> theirs
>> > except for the things we specifically wanted to change.
>> >
>> > Perhaps these things don't bother the linux gurus among Technologic's
>> > customers, but they concern me.
>> >
>> > Hopefully, this will at least provide a starting point to anyone else
>> > who needs (or wants) to rebuild the kernel for their Technologic
> board.
>> >
>>
>
>



--
Jordi Soucheiron
Software Engineer

DEXMA
Parc Tecnològic la Salle
Sant Joan de la Salle, 42
08022 Barcelona
t/f: [+34] 93 280 19 18
www.dexmatech.com



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