Re: [gentoo-embedded] cirrus ep93xx chips / maverick crunch

[wireless]

Jakub Ladman wrote:
>  * gcc failed :(
>  * If you file a bug, please attach the following logfiles:
>  * /var/log/portage/cross-armv4t-maverick-linux-gnueabi-info.log
>  * /var/log/portage/cross-armv4t-maverick-linux-gnueabi-gcc-stage1.log
>
>
> Do you know how to build it with uclibc library?

NO

I was successful building with crossdev using:

crossdev -t arm-unknown-linux-gnu

However I wanted the Maverick FPU capability so after
several attemps (all posted to this group) I got it to work.
Here's what I did:


Look carefully at the Web page Christopher has posted:
http://perpetual-notion.blogspot.com/2008/02/maverick-crunch-eabi-support-for.html

Down the page a ways, you can glean the 'heart' of Christopher's method:

"
and then create the toolchain.

rm -Rf ${MAVERICK_OVERLAY} &&
mkdir -p ${MAVERICK_OVERLAY} &&
wget -O - ${OVERLAY_SRC}/maverick.tar.bz2 | \
tar xpjf - -C ${MAVERICK_OVERLAY} &&

PORTDIR_OVERLAY="${CROSSDEV_OVERLAY} \
${MAVERICK_OVERLAY}" \
EXTRA_ECONF="--with-cpu=arm920t \
--with-fpu=maverick --with-float-abi=softfp" \
USE="-gcj -gtk -fortran -mudflap" \
FEATURES="buildpkg" \
crossdev -S \
--l 2.5-r4 --g 4.1.2 --b 2.17-r1 \
${MYHOST}
"

For whatever reason it did not work as a whole ( not sure why)
so I broke it down to several steps:

Make dirs:

cd /usr/local/portage/
mkdir crossdev_overlay
mkdir maverick_overlay



Download his 'maverick.tar.bz2' file


I used a web browser can gleaned it to be in this dir
(which is where I pointed my web browser):
http://vaiprime.visibleassets.com/~cfriedt/maverick.tar.bz2
(does not seem to be working today)

 and unpack it in the
dir he says to (see the above script):

cd maverick_overlay/
tar xpjf  ./maverick.tar.bz2

Then I just issued this command:

PORTDIR_OVERLAY="/usr/local/portage/crossdev_overlay
/usr/local/portage/maverick_ove
rlay" ECONF_EXTRA="--disable-nls --enable-shared --with-system-zlib
--without-includ
ed-gettext --enable-threads=posix --enable-clocale=gnu
--with-fpu=maverick --with-fl
oat-abi=softfp --with-cpu=ep9312 --enable-languages=c,c++" USE="-gcj
-gtk -fortran -
mudflap" crossdev -S --l 2.5-r4 --g 4.1.2 --b 2.17-r1
armv4t-maverick-linux-gnueabi



So this gets you a working cross compiler
(which I have not used yet).


The next step, which I have not had time to do, is follow
the guidance of the folks at Imac who tell me putting a
32meg SD card into their board should allow me to boot
off of several different images without removing their kernel:


" The only thing I would add is that you can boot filesystems from the
SD card. This will allow you to have your 2 bootable images.
The kernel must be stored in the flash but this takes up much less
room and you could easily store more than one.

Example redboot command for booting from an SD card:

load -v -r -b 0x80000 zImage-IPAC-9302-e1.2
exec -c "console=ttyAM0,57600 root=/dev/mmca1 rootfstype=ext3"

This will load a kernel from flash into memory (SDRAM), and execute it
with the boot args in quotes. The boot args here will tell it which
tty port to use for console  input/output, and specify the location of
the root filesystem as being in the  mmca device on partition 1 with
and ext3 filesystem."



So for now, that's all I have (consulting work keeps me running like
an interupt processor with no return vector.....).

If you read chris's page over and over, it becomes clear what he has
done and what he is doing. If you cannot find the maverick.tar.bz2
file then ask Christopher to post it somewhere for you or provide
a direct like. If you fiddle with his script, I'm sure you can get
it to work natively......

Some of my make.conf entries conflicted, and I was too tired to
reconcile all of that, at this time.


HTH,

James






> And can you help me with building it natively? I have a fully functional
> gentoo on EP9307 with softfloat and uclibc and i would like to have compiler
> with maverick supported.
> Thank you
>
>
> Dne Tuesday 12 February 2008 23:32:48 Christopher Friedt napsal(a):
>> Sorry, I made a mistake there,
>>
>> instead of ECONF_EXTRA, the variable should be called EXTRA_ECONF,
>> according to 'man 5 ebuild'
>>
>> ~/Chris
>>
>> Christopher Friedt wrote:
>>> mkdir -p /usr/local/portage/maverick_overlay &&
>>> SRV="http://vaiprime.visibleassets.com" \
>>> LOC="~cfriedt/overlays/maverick.tar.bz2" \
>>> wget -O - ${SRV}/${LOC} | \
>>> tar xpjf - -C /usr/local/portage/maverick_overlay &&
>>> PORTDIR_OVERLAY="/usr/local/portage/crossdev_overlay \
>>> /usr/local/portage/maverick_overlay" \
>>> ECONF_EXTRA="--disable-nls --enable-shared \
>>> --with-system-zlib --without-included-gettext \
>>> --enable-threads=posix --enable-clocale=gnu \
>>> --with-fpu=maverick --with-float-abi=softfp \
>>> --with-cpu=ep9312 --enable-languages=c,c++" \
>>> USE="-gcj -gtk -fortran -mudflap" \
>>> crossdev -S \
>>> --l 2.5-r4 --g 4.1.2 --b 2.17-r1 \
>>> armv4t-maverick-linux-gnueabi
>
>

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