NFS mount issue with linux-2.6.28 on imx27ads (imx27ads_defconfig)

[turbosree]

Hi,

        I am having trouble in booting linux-2.6.28 on imx27ads. The details are below,

Setup:

ltib: LINUX_BSP_REL_2_0_IMX27ADS.iso/ltib-imx27ads-20070522

board: imx27ads (Linux OS Rev 2.0)

Ethernet device: External ethernet (cs8900a_eth0)

The linux kernel available in ltib (linux-2.6.19.2) boots fine with nfs root. With the same setup the 2.6.28 kernel built with imx27ads_defconfig gives the following errors,

IP-Config: No network devices available.

Looking up port of RPC 100003/2 on 199.63.244.43

rpcbind: server 199.63.244.43 not responding, timed out

Root-NFS: Unable to get nfsd port number from server, using default

Looking up port of RPC 100005/1 on 199.63.244.43

rpcbind: server 199.63.244.43 not responding, timed out

Root-NFS: Unable to get mountd port number from server, using default

Root-NFS: Server returned error -5 while mounting /srv/nfsroot/rfs-imx27ads/

VFS: Unable to mount root fs via NFS, trying floppy.

List of all partitions:

No filesystem could mount root, tried:

Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)

I have attached the full kernel console messages herewith. Any help is greatly appreciated.

Thanks

Sreejith

Original Attachment has been moved to: imx27ads_redboot_fconfig.txt.zip

Original Attachment has been moved to: imx27ads_kernel_console_msg.txt.zip

[fabio_estevam]

As you are updating your kernel, why don't you try the latest one from kernel.org instead?

Anyway, for mx27ads the most recent kernel from Freescale was 2.6.22, not 2.6.28.

[turbosree]

With latest kernel (or any version >= 2.6.29), I am getting the following build error.

include/linux/compiler-gcc4.h:7:3: error: #error Your version of gcc miscompiles the __weak directive

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

make: *** [prepare0] Error 2

With 2.6.22, I am not finding a suitable kernel configuration under arch/arm/configs/. Can I use mx1ads_defconfig to build a kernel for imx27ads?

Thanks
Sreejith

[fabio_estevam · Accepted solution]

1. I suggest you to upgrade your toolchain.

2. With the latest kernel you should use:

make imx_v4_v5_defconfig

[turbosree]

Can you please post the link to the latest tool chain (ltib) for imx27ads?

Can you also suggest the recommended kernel version for imx27ads with the latest toolchain?

Thanks.

[fabio_estevam]

The latest BSP for mx27 that Freescale provides is based on 2.6.22 and you can use the toolchain that comes with it.

Or if you want a more recent toolchain you can use the one from mx28evk BSP.

You can decide on using the 2.6.22 or a more recent kernel from kernel.org.

[turbosree]

Where can I find Linux BSP for the Freescale i.MX27ADS -- Release 3 ISO for download?

I found the release note here, but not able to locate the download path from freescale website.

http://www.freescale.com/files/soft_dev_tools/doc/support_info/Release_Notes_mx27ads-r3.txt

[Yuri]

BSP packages for i.MX27 ADS are not available now on Freescale Web. Only ones for i.MX27 PDK may be found.

If the release 3 is really needed, please create SR, I can try to forward the ISO image via a FTP server.