Reg:CGLinux kernel(2.6.21) booting issue

[Viswanathan.M]

Hi,

I m now trying to boot the powerpc board using a monta vista carrier
grade linux of kernel version 2.6.21.
Its getting hanged after printing the line "Loading device
tree...OK".However,I have already been successful in booting the same
powerpc board using the main line kernel linux kernel version 2.6.23
and 2.6.24.I have changed the device tree file according to my
hardware interface and tested.but the result is same.i.e getting
hanged after "Loading device tree...OK"

I also debugged in u-boot and it is successful in transfering the
control to linux.I am not sure about the where its getting lost after
coming into kernel.I also put some printk in the early kernel
functions such as early_init and probe machine.But it didnt get
printed.

I have checked serial port baud rate at u-boot end also.I have also
checked the serial port signals at the time of hanging.There was no
output in the serial port at the time of hanging.

Will there be anything related "current-speed" option settings in
device tree file??

What could be the issue?please help me in this regard.

-Viswanathan M

[Lew Pitcher]

Post by Viswanathan.M
Hi,
I m now trying to boot the powerpc board using a monta vista carrier
grade linux of kernel version 2.6.21.
Its getting hanged after printing the line "Loading device
tree...OK".However,I have already been successful in booting the same
powerpc board using the main line kernel linux kernel version 2.6.23
and 2.6.24.I have changed the device tree file according to my
hardware interface and tested.but the result is same.i.e getting
hanged after "Loading device tree...OK"

[snip]

Post by Viswanathan.M
What could be the issue?please help me in this regard.

Since you see the [OK] for the "Loading device tree..." message, your
boot has made it past the device tree load.

What is /supposed/ to happen next? /That's/ probably the component
that is failing.

[Viswanathan.M]

Post by Lew Pitcher

Post by Viswanathan.M
Hi,
I m now trying to boot the powerpc board using a monta vista carrier
grade linux of kernel version 2.6.21.
Its getting hanged after printing the line "Loading device
tree...OK".However,I have already been successful in booting the same
powerpc board using the main line kernel linux kernel version 2.6.23
and 2.6.24.I have changed the device tree file according to my
hardware interface and tested.but the result is same.i.e getting
hanged after "Loading device tree...OK"

[snip]

Post by Viswanathan.M
What could be the issue?please help me in this regard.

Since you see the [OK] for the "Loading device tree..." message, your
boot has made it past the device tree load.
What is /supposed/ to happen next? /That's/ probably the component
that is failing.

But I have booted successfully with the main stream kernel version
2.6.24.So there is no problem with any components.I am facing the
problem when booting with monta vista carrier grade linux of kernel
version 2.6.21.

What could be the problem then?