RE: Some issues with kernel 2.6 for MPC8260 target

2 messages, 2 authors, 2005-01-12 · open the first message on its own page

RE: Some issues with kernel 2.6 for MPC8260 target

From: Steven Blakeslee <hidden>
Date: 2005-01-12 14:34:22 

I ported it to the Embedded Planet ep8260 board with FCC3, ep8248 board
with FCC1 and FCC2 and ep8280 with FCC2 and FCC3.  I had to make very
little, if anything, to get it to work.  I did not try 2.6.9.  I am
currently using 2.6.10-rc3 which I believe after the last merge is now
2.6.10.  I did practically nothing to get all of these to work.=20

-----Original Message-----
From: Saso Kavcic [mailto:saso@activetools.si]=20
Sent: Wednesday, January 12, 2005 9:27 AM
To: Steven Blakeslee
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: Some issues with kernel 2.6 for MPC8260 target
=20
Hi Steven,
=20
Have you noticed any improvements in 2.6.10. over 2.6.9? We=20
were porting
2.6.9 to a custom mpc8275vr
board and we were able to get everything working except=20
ethernet (fcc enet). We did manage to get a few packets over=20
it but it was all very slow, unstable and unpredictable and=20
it seemed that fcc enet driver doesn't work well in 2.6. Were=20
you able to use fcc under 2.6.9?
=20
Best Regards, Saso
=20
Steven Blakeslee wrote:
=20
quoted
I would suggest going to the latest 2.6.10 kernel.  I have=20
it running=20
quoted
with several ethernets running on all the 82xx processors.

=20
quoted
-----Original Message-----
From: linuxppc-embedded-bounces@ozlabs.org
[mailto:linuxppc-embedded-bounces@ozlabs.org] On Behalf Of Vijay=20
Padiyar
Sent: Wednesday, January 12, 2005 5:37 AM
To: LinuxPPC Support
Subject: Some issues with kernel 2.6 for MPC8260 target

Hi all

I wish to discuss some strange issues that I faced with=20
respect to the=20
quoted
quoted
Linux
2.6.8 kernel (downloaded from kernel.org). Firstly, I wish to know=20
whether this has been known to work on an MPC8260 PowerPC target.

Secondly, when I tried to compile the Linux kernel with my=20
toolchain=20
quoted
quoted
(built with Dan Kegel's crosstool for the PowerPC 603e=20
core, which is=20
quoted
quoted
what my processor has), I got some errors which I found to rather=20
queer after investigation. Firstly, let me state the errors that I=20
got:

------------------------------------------------------

 LD      init/built-in.o
 LD      .tmp_vmlinux1
arch/ppc/8260_io/built-in.o(.text+0x103c): In function
`mii_queue_relink':
arch/ppc/8260_io/fcc_enet.c:1254: undefined reference to=20
`schedule_task'
arch/ppc/8260_io/built-in.o(.text+0x1074): In function
`mii_queue_config':
arch/ppc/8260_io/fcc_enet.c:1263: undefined reference to=20
`schedule_task'

------------------------------------------------------

On further investigation, I find that 'schedule_task()' is=20
simply not=20
quoted
quoted
defined anywhere in the 2.6.8 kernel sources. This is quite wierd!=20
However, it is defined in a file 'context.c'
(linux-src/kernel) in the 2.4.27 kernel sources, which we=20
were using=20
quoted
quoted
earlier. How is it that a function is being called but its=20
definition=20
quoted
quoted
has been removed from the sources?

Another such example is with the structure 'tq_struct'. It=20
is referred=20
quoted
quoted
to in the file 'fcc_enet.c'
(linux-src/arch/ppc/8260_io) but it's not defined anywhere!=20
Again, after checking in the 2.4.27 sources, I find that=20
it's defined=20
quoted
quoted
in the file 'tqueue.h' (linux-src/include/linux)!

A third thing is that the 2.4.27 kernel source file 'uart.c'
(linux-src/arch/ppc/cpm2_io) is not present in the corresponding=20
folder in the 2.6.8 source (linux-src/arch/ppc/8260_io).=20
There is one=20
quoted
quoted
'uart.c' in the folder '8xx_io', but it doesn't get compiled during=20
the kernel build process. Will my UART work correctly with=20
this build?
quoted
quoted
Can someone please tell me if there's some explanation for=20
this that=20
quoted
quoted
I'm unaware of? Which would be the proper forum to report=20
this? Again=20
quoted
quoted
I would like to ask: Has the 2.6.8 kernel been tested=20
successfully on=20
quoted
quoted
the MPC8260 PowerPC platform?

Lastly, where can I get the latest stable Linux kernel=20
source for the=20
quoted
quoted
PowerPC platform?

Regards

Vijay Padiyar
_______________________________________________
Linuxppc-embedded mailing list
Linuxppc-embedded@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-embedded

  =20
_______________________________________________
Linuxppc-embedded mailing list
Linuxppc-embedded@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-embedded
=20
=20
=20

Re: Some issues with kernel 2.6 for MPC8260 target

From: Saso Kavcic <hidden>
Date: 2005-01-12 14:51:10 

Thanks for the info. Nice to know that it can work.

Steven Blakeslee wrote:

I ported it to the Embedded Planet ep8260 board with FCC3, ep8248 board
with FCC1 and FCC2 and ep8280 with FCC2 and FCC3.  I had to make very
little, if anything, to get it to work.  I did not try 2.6.9.  I am
currently using 2.6.10-rc3 which I believe after the last merge is now
2.6.10.  I did practically nothing to get all of these to work.
quoted
-----Original Message-----
From: Saso Kavcic [mailto:saso@activetools.si] 
Sent: Wednesday, January 12, 2005 9:27 AM
To: Steven Blakeslee
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: Some issues with kernel 2.6 for MPC8260 target

Hi Steven,

Have you noticed any improvements in 2.6.10. over 2.6.9? We 
were porting
2.6.9 to a custom mpc8275vr
board and we were able to get everything working except 
ethernet (fcc enet). We did manage to get a few packets over 
it but it was all very slow, unstable and unpredictable and 
it seemed that fcc enet driver doesn't work well in 2.6. Were 
you able to use fcc under 2.6.9?

Best Regards, Saso

Steven Blakeslee wrote:
quoted
I would suggest going to the latest 2.6.10 kernel.  I have 
     
it running
quoted
with several ethernets running on all the 82xx processors.
quoted
-----Original Message-----
From: linuxppc-embedded-bounces@ozlabs.org
[mailto:linuxppc-embedded-bounces@ozlabs.org] On Behalf Of Vijay 
Padiyar
Sent: Wednesday, January 12, 2005 5:37 AM
To: LinuxPPC Support
Subject: Some issues with kernel 2.6 for MPC8260 target

Hi all

I wish to discuss some strange issues that I faced with 
       
respect to the
quoted
quoted
Linux
2.6.8 kernel (downloaded from kernel.org). Firstly, I wish to know 
whether this has been known to work on an MPC8260 PowerPC target.

Secondly, when I tried to compile the Linux kernel with my 
       
toolchain
quoted
quoted
(built with Dan Kegel's crosstool for the PowerPC 603e 
       
core, which is
quoted
quoted
what my processor has), I got some errors which I found to rather 
queer after investigation. Firstly, let me state the errors that I 
got:

------------------------------------------------------

LD      init/built-in.o
LD      .tmp_vmlinux1
arch/ppc/8260_io/built-in.o(.text+0x103c): In function
`mii_queue_relink':
arch/ppc/8260_io/fcc_enet.c:1254: undefined reference to 
`schedule_task'
arch/ppc/8260_io/built-in.o(.text+0x1074): In function
`mii_queue_config':
arch/ppc/8260_io/fcc_enet.c:1263: undefined reference to 
`schedule_task'

------------------------------------------------------

On further investigation, I find that 'schedule_task()' is 
       
simply not
quoted
quoted
defined anywhere in the 2.6.8 kernel sources. This is quite wierd! 
However, it is defined in a file 'context.c'
(linux-src/kernel) in the 2.4.27 kernel sources, which we 
       
were using
quoted
quoted
earlier. How is it that a function is being called but its 
       
definition
quoted
quoted
has been removed from the sources?

Another such example is with the structure 'tq_struct'. It 
       
is referred
quoted
quoted
to in the file 'fcc_enet.c'
(linux-src/arch/ppc/8260_io) but it's not defined anywhere! 
Again, after checking in the 2.4.27 sources, I find that 
       
it's defined
quoted
quoted
in the file 'tqueue.h' (linux-src/include/linux)!

A third thing is that the 2.4.27 kernel source file 'uart.c'
(linux-src/arch/ppc/cpm2_io) is not present in the corresponding 
folder in the 2.6.8 source (linux-src/arch/ppc/8260_io). 
       
There is one
quoted
quoted
'uart.c' in the folder '8xx_io', but it doesn't get compiled during 
the kernel build process. Will my UART work correctly with 
       
this build?
quoted
quoted
Can someone please tell me if there's some explanation for 
       
this that
quoted
quoted
I'm unaware of? Which would be the proper forum to report 
       
this? Again
quoted
quoted
I would like to ask: Has the 2.6.8 kernel been tested 
       
successfully on
quoted
quoted
the MPC8260 PowerPC platform?

Lastly, where can I get the latest stable Linux kernel 
       
source for the
quoted
quoted
PowerPC platform?

Regards

Vijay Padiyar
_______________________________________________
Linuxppc-embedded mailing list
Linuxppc-embedded@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-embedded

  

       
_______________________________________________
Linuxppc-embedded mailing list
Linuxppc-embedded@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-embedded
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