Thank you very much David!
I have downloaded the elan kernel and the initrd.lrp from your site and
using these two new packages my system boot!
However the system does not complete the startup sequence, giving me he
following messages on my serial console:
........
[ 4.077117] Write protecting the kernel text: 1636k
[ 4.078275] Write protecting the kernel read-only data: 744k
[ 4.078275] Write protecting the kernel read-only data: 744k
LINUXRC: Bering - Initrd - 4.0.0 Rev 12 uClibc 0.9.30.3
LINUXRC: Parsing kernel command line...
/init: eval: line 1: KCMD_libata.dma=0: not found
LINUXRC: Loading modules...
LINUXRC: Root: /dev/ram0
LINUXRC: Looking for leaf.cfg...
LINUXRC: Generating default dirs...
LINUXRC: Generating /tmp & /var/log partitions ...
LINUXRC: PKGPATH is empty or unset. Can not install packages.
LINUXRC: LRP= is empty or unset. Can not install packages.
LINUXRC: chown and chmod /dev...
LINUXRC: Loaded Packages
LINUXRC: Creating new rootfs...
LINUXRC: Switch_root into new rootfs...
can't run '/etc/init.d/rcS': No such file or directory
Please press Enter to activate this console.
.......
I think that this probles is related to the IDE driver kernel that is
not present...
Here the content of "/linuxrc.err"
/ # cat linuxrc.err
Next iteration: Thu Jan 10 02:40:07 UTC 1980
Probing platform:rtc_cmos ... not found.
Probing platform:pcspkr ... not found.
Probing platform:serial8250 ... not found.
Probing pci:v00001022d00003000sv00000000sd00000000bc06sc00i00 ... not found.
Probing pci:v0000100Bd00000020sv0000100Bsd00000020bc02sc00i00 ... not found.
Probing pci:v0000100Bd00000020sv0000100Bsd00000020bc02sc00i00 ... not found.
Probing pci:v0000100Bd00000020sv0000100Bsd00000020bc02sc00i00 ... not found.
Successfully probed 0 modules for 7 modaliases, currently loaded:
Not tainted
vfat 6542 0 - Live 0xb483b000
fat 34532 1 vfat, Live 0xb4825000
isofs 17079 0 - Live 0xb4809000
/ #
and my "lsmod" output:
/ # lsmod
Not tainted
vfat 6542 0 - Live 0xb483b000
fat 34532 1 vfat, Live 0xb4825000
isofs 17079 0 - Live 0xb4809000
/ #
and, finally, my "lspci" output
/ # lspci
00:00.0 Class 0600: 1022:3000
00:12.0 Class 0200: 100b:0020
00:13.0 Class 0200: 100b:0020
00:14.0 Class 0200: 100b:0020
/ # lspci -m
00:00.0 "Class 0600" "1022" "3000" "0000" "0000"
00:12.0 "Class 0200" "100b" "0020" "100b" "0020"
00:13.0 "Class 0200" "100b" "0020" "100b" "0020"
00:14.0 "Class 0200" "100b" "0020" "100b" "0020"
/ #
I try to load the "ata_generic" modules using modprobe (no problem
loading it) and make /dev/sda and /dev/sda[1-4] devices using mknod, but
I cannot mount my CF....
I found on a tecnical list on soekris site
(http://old.nabble.com/Linux-IDE-driver-for-CF-card-td19766587.html)
that speaks about a "generic/default IDE driver":
...
The CF card has started working after activating "generic/default *IDE*
chipset support (*IDE_GENERIC*)" support in the kernel. I guess this
driver doesn't support UDMA, but the "National SCx200 chipset support"
or "AMD CS5535 chipset support" drivers didn't work.
....
and an other document related to debian on net4501
(http://www.feep.org/weblogs/josh/archives/69-Debian-on-a-Soekris-net4501.html)
speaks about an "ide_generic" module that I cannot find on BuC 4.0:
....
Rebuild initramfs with ide_generic support.|
echo "ide_generic" >> /etc/initramfs-tools/modules
update-initramfs -t -u
....
|
In few days I will install a linux build system and I will try to follow
the instructions in the wikies pages related to development.
What do you think about this?
Thanks a lot for your time
cheers
graziano
Il 29/04/2011 12.35, davidMbrooke ha scritto:
> Hi Graziano,
>
> Ah, OK. I did not spot that some of your output was from the net4801...
>
> There is a kernel .config option "CONFIG_X86_ELAN" which is not set for
> our current 4.x builds. It is not completely clear to me what effect
> setting this will have, but it is worth a try. If this is indeed the
> problem we would add another kernel variant "elan" like we have already
> for i486, i686 and geode.
>
> In order to build a custom kernel you can follow the instructions at
> http://sourceforge.net/apps/mediawiki/leaf/index.php?title=Bering-uClibc_4.x_-_Developer_Guide_-_Preparing_the_Build_Environment
> and on subsequent pages. It is not particularly difficult if you already
> have a suitable Linux build host available. Once the buildenv is ready
> run "./buildtool.pl build linux" to build the standard kernels.
>
> Making the changes necessary for a custom kernel is not difficult but it
> is currently not documented in the Wiki. Once you get as far as building
> the standard kernel contact me directly for further advice. In the
> meantime I will also try to build a specific "elan" kernel for you to
> try.
>
> Regards,
> dMb
>
> On Fri, 2011-04-29 at 11:35 +0200, Graziano Brioschi wrote:
>> hi David
>>
>> I think there is a misunderstanding about the problem.
>> I have two machine:
>> - the first is a Soekris net4501 and on this machine the kernel does not
>> boot; I can see the syslinux output about loading of /syslinux/linux and
>> /initrd.lrp, but nothing more. The system hangs. On this system BuC3.1
>> runs correctly.
>> - the second is a Soekris net4801 that I boot using the same compact
>> flash generated for the first net4501 to verify that the compact flash
>> has not some kind of problem; BuC4.0 runs correctly without problems,
>> but I have seen the "libata.dma=0 not found" error.
>>
>> I hope the test environment is more clear now.
>> I think that there is a kind of incompatibility between the i486 kernel
>> and the AMD ELAN SC520 processor that is installed on net4501.
>> Is there a simple way to rebuild a kernel for the AMD ELAN CPU? Is a
>> difficult operation? Can I try to built it?
>>
>> thanks a lot
>> graziano
>>
>>
>
>
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--
Graziano Brioschi
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Via A. Don Rocca, 13
20030, Senago (MI)
tel: 02 9948 6014
mobile: 328 8382622
email: graziano.brios...@outland.it
--> U4E<--
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