Hello,
I want to compile my own kernel for a GE863-pro cube (AT91SAM9260).

I think the Telit module is based on then AT91SAM9260-EK.

I have compiled the the 2.6.30 Kernel, but on booting it hangs up. The root device (my SD-Card) was mounted.


mmc0: host does not support reading read-only switch. assuming write-enable.
mmc0: new SD card at address 0007
mmcblk0: mmc0:0007 SD02G 1.90 GiB
mmcblk0: p1
EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
VFS: Mounted root (ext2 filesystem) on device 179:1.
Freeing init memory: 108K
Kernel panic - not syncing: Attempted to kill init!

Backtrace:
[<c00275bc>] (dump_backtrace+0x0/0x10c) from [<c00276fc>] (dump_stack+0x18/0x1c)

r6:00000004 r5:c0271a3c r4:c3416000
[<c00276e4>] (dump_stack+0x0/0x1c) from [<c003a330>] (panic+0x4c/0x12c)
[<c003a2e4>] (panic+0x0/0x12c) from [<c003d04c>] (do_exit+0x64/0x5a4)
r3:c025f428 r2:c3412d60 r1:c3417d14 r0:c022787c
[<c003cfe8>] (do_exit+0x0/0x5a4) from [<c003d61c>] (do_group_exit+0x90/0xc4)



Can anybody help me?

Hi sam-dev

Did you build that kernel using buildroot?

I have the same module and have tried building various kernel versions using buildroot....I also tried adding Telit's config to my build root.....I keep getting the same results.....garbage :)



U-Boot>
U-Boot> ethinit $ipaddr
Net: macb0
phy_id 22 found at 1
macb0: link up, 100Mbps full-duplex (lpa: 0xcde1)

U-Boot> boot
phy_id 22 found at 1
macb0: link up, 100Mbps full-duplex (lpa: 0xcde1)
Using macb0 device
TFTP from server 192.100.1.106; our IP address is 192.100.1.102
Filename 'uImage'.
Load address: 0x20200000
Loading: #################################################################
#################################################################
#################################################################
########################
done
Bytes transferred = 1120756 (1119f4 hex)
## Booting image at 20200000 ...
Image Name: Linux-2.6.33.7.2-rt30
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1120692 Bytes = 1.1 MB
Load Address: 20008000
Entry Point: 20008000
Verifying Checksum ... OK
Loading Kernel Image ... OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
������������������������������������������������������������������������������������������������������ �


Any ideas?

I have the same effect with AT91SAM9260-EK as well as with custom board.

I found that using older gcc (4.3.5) with the latest buildroot-2011.02 I have a working system. Any newer gcc (4.4.5 or 4.5.2) exposes different effects from hanging on boot kernel (gcc 4.4.x) to similar backtrace dump (gcc 4.5.2).

At the same time I know that older buildroot with gcc 4.4.2 worked fine.

I am going to look into this, but you can at least try the gcc 4.3.5, it works for me.

Hi,

I've successfully build new kernel for the PRO3 with buildroot 2010.02 and kernel 2.6.30.
First I have patched the vanilla kernel with AT91 patch set (that why I used the 2.6.30 and not later version). Then I have port the changes made by Telit in the kernel files (from their download zone). I've patched 3 files :
- board-sam9260ek.c
- at91sam9260_devices.c
- at91sam9260.c

I've also configurated uboot to use tftp and NFS to remotly boot. MUCH more easy to test/retry linux conf.

Hope that help,
Enjoy,

Hi, i'd trying to compile the 2.6.30 too but i cant find the patch file from telit.
may you send me them ?

thank you.