Ubuntu 14.04

Only alternative right now is compiling the Kernel yourself.

There is a branch of the original Kernel in which the reboot error is corrected.

I described here how to compile the Kernel.

Re: Linux : Where is UART's

You then just have to replace the Kernel image file when flashing Ubuntu.

Hallo Mr. Römer sadly copy and paste didn't work at all.

I always receive following error

linaro@linaro-ubuntu-desktop:~/linux-imx$ sudo make ARCH=arm CROS_COMPILE=arm-linux-gnueabihf- uImage

make: arm-fsl-linux-gnueabi-gcc: Command not found

scripts/kconfig/conf --silentoldconfig Kconfig

make: arm-fsl-linux-gnueabi-gcc: Command not found

  CHK     include/linux/version.h

  CHK     include/generated/utsrelease.h

make[1]: `include/generated/mach-types.h' is up to date.

  CC      kernel/bounds.s

/bin/sh: 1: arm-fsl-linux-gnueabi-gcc: not found

make[1]: *** [kernel/bounds.s] Error 127

make: *** [prepare0] Error 2

linaro@linaro-ubuntu-desktop:~/linux-imx$

I tried to do i tby manual and replaced u-boot and linux to embest_imx_3.0.35_4.1.0. and also downloaded the compiler from toochain.

Make u-boot worked fine, but creating kernel image delivered still the same error.

I tried on ubuntu 11. now on 12.11 but still the same problem.

I have a typo in the text it´s not "CROS_COMPILE=..." it´s "CROSS_COMPILE=...".

Sorry for that.

I´ll correct it in that post.

Yes I've seen.

But this didn't solve.

May you could dd your RIoTboard, so I'd be able to place it on mine? or to replace the existing Linux and burn with the mergetool.

I am gonna to use it in commercial way. Have already running 10 Pi's successfully with gsm and RS485 transmission since a year (a little workaround with GPIO, reboot..) and they still work.

But want to get more stable, for example without sd card. But actually it's sad to provide an old version on the official website.,

which can't once reboot or shutdown.

So please hurry up:). RioTBoardTeam.

P.S in the Usermanual is described make mx6solo_riot_config,

but the boards name has been changed. I just not remember how. Pls.correct.

Yes I've seen.

But this didn't solve.

May you could dd your RIoTboard, so I'd be able to place it on mine? or to replace the existing Linux and burn with the mergetool.

I am gonna to use it in commercial way. Have already running 10 Pi's successfully with gsm and RS485 transmission since a year (a little workaround with GPIO, reboot..) and they still work.

But want to get more stable, for example without sd card. But actually it's sad to provide an old version on the official website.,

which can't once reboot or shutdown.

So please hurry up:). RioTBoardTeam.

P.S in the Usermanual is described make mx6solo_riot_config,

but the boards name has been changed. I just not remember how. Pls.correct.

If you can wait some more:
Selsinork is going to post a description on how to compile the newest mainline kernel.

What I described to compile is a rather old Kernel 3.0.35.

He already posted the description of compiling and using the mainline u-boot yesterday.

I will then also compile and test the new Kernel. I could also provide some space for an image on my server.

I can´t provide an image myself. Just because it would take mo too damn long to upload it...

I have a really slow connection.

If someone wants to upload it I could give a ftp account for that.

What I can do is to provide the Kernel Image file itself. I made no changes in the kernel code and I only tested it with a minimal debian rootfs so far.

But it should work with an Ubuntu rootfs I think.

I can upload it as soon as I´m back from work, because it´s on my notebook and I don´t have it with me right now. This will take a few hours from now.

Here is the Kernel Image in which the reboot should be fixed.
Just replace your old image with this one.

Like I said.

Only tested with Debian rootfs.

Hallo Herr Römlich,

i replaced the file in the boot directory?

uname -a shows

Linux linaro-ubuntu-desktop 3.0.35-02871-ga35ffe3 #1 SMP PREEMPT Wed Oct 30 15:27:47 CST 2013 armv7l armv7l armv7l GNU/Linux

is this now the updated version?

Reboot still don't work.

It appears that Ottos working version is Linux-3.0.35-03023-ga0660f4

Unfortunately, the file in the boot directory is never used.

Assuming you're using the MFG_Tool, you'd need to replace the uimage in the correct subdirectory and reflash completely. (I don't have a windows machine, so really can't help with MFG_Tool)

The reason it doesn't use the file in the boot directory can be found in the embedded script in u-boot which does this:

bootdelay=3
baudrate=115200
ipaddr=192.168.1.103
serverip=192.168.1.101
netmask=255.255.255.0
loadaddr=0x10800000
rd_loadaddr=(0x10800000 + 0x300000)
netdev=eth0
ethprime=FEC0
uboot=u-boot.bin
kernel=uImage
nfsroot=/opt/eldk/arm
bootargs=console=ttymxc1,115200 nosmp video=mxcfb0:dev=hdmi,1280x720M@60,bpp=32 video=mxcfb1:off
bootargs_nfs=setenv bootargs ${bootargs} root=/dev/nfs ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp
bootcmd_net=run bootargs_nfs; tftpboot ${loadaddr} ${kernel}; bootm
bootargs_mmc=setenv bootargs ${bootargs} root=/dev/mmcblk0p1 rootwait
bootcmd_mmc=run bootargs_mmc; mmc dev 3; mmc read ${loadaddr} 0x800 0x2000; bootm
bootcmd=run bootcmd_mmc

the bit in bold is what loads the kernel and what it's doing is reading raw data directly from the mmc card starting at  1,048,576 bytes into the card, and a length of 4,194,304 bytes.

Theoretically you could use dd to write the new uimage to the card in the correct location with something like:

dd if=/boot/uImage of=/dev/mmcblk0 bs=1M seek=1

However, I've never done that and can't guarantee it'll work, so you should be prepared to have to reflash using the MFG_Tool

Note that there's an implicit problem with the u-boot setup that's being used - if you recompile a kernel and it ends up being bigger than 4MB then it won't be able to boot since u-boot will only partially load the kernel image.  I'm sure it's obvious why the way this is currently being done is a bad idea.  The worst part is that there's no need to do this.

well done. dd worked fine.

Now reboot works.

why no need to this? "The worst part is that there's no need to do this."

Thank you.

basically because u-boot can be setup in such a way that it will read the uImage from the file in /boot which eliminates an extra step and removes any confusion people have with the file being there.  From a technical point of view, reading the file from the filesystem also means the kernel can grow outside the current hard limit of 4MB without requiring any changes.

There are several typical u-boot usage patterns that are not necessary today, probably they still happen due to historic reasons.  I think it's good to drop those things that are not needed, it removes confusion and means nobody has to answer the 'why am I doing this unnecessary step?' type of question

Anyway, glad the dd command worked!

Just came home but selsinork did help already.
I´m glad it´s working now.

Eugen

As suggested by Otto, can you please share your stable Linux Ubuntu 12.04 image with the community ?

I have limited Linux experience and a slow computer but I would like test it on my RiOT board

Thanks in advance
Greg

You can use the official Linux download and just replace the kernel image in the files folder with mine.

Then flash it normally with mfgtools.

You then have the same image as Eugen.

I don't think we need a whole system image for this.

I agree, however mfgtool is a difficulty for a lot of people. Especially with the file in the current download needing renamed before it will work!

In a lot of ways, I think it could be preferable to have simple img files that can be written to SD card, or a BBB style 'flasher' SD card image. Most people can handle win32diskimager by now as it's a common thing to use for most boards. RIoT being different by using mfgtool just adds an obstacle that could easily be removed..