Porting Linux to Xilinx ML410

Porting Linux to Xilinx ML410

[khollan]

Hi Im trying to get linux 2.6 to run on my ML410 board from xilinx.  I just
created a real simple system with a Uartlite DDR2 and DDR interupt
controller and sysace.  I installed the patches I found for Uartlite and
sysace I found here.  I boot the zImage with XMD with the following
commands:
dow t:/zImage.elf
con
This is what I get out the serial port:
loaded at:     00400000 00537138
board data at: 00000000 00000018
relocated to:  00404064 0040407C
zimage at:     00404E6D 005345F1
avail ram:     00538000 7C7F1B78

Linux/PPC load: console=ttyUL0,9600 root=/dev/xsysace/disc0/part3 rw
Uncompressing Linux...done.
Now booting the kernel

It always stall on the Now booting the kernel.  Im new to linux building and
any help or suggestions are greatly appreciated.
Thanks
Kevin
-- 
View this message in context: http://www.nabble.com/Porting-Linux-to-Xilinx-ML410-tf3989483.html#a11328063
Sent from the linuxppc-embedded mailing list archive at Nabble.com.

Re: Porting Linux to Xilinx ML410

[Thomas Glanzmann]

Hello,

> Linux/PPC load: console=ttyUL0,9600 root=/dev/xsysace/disc0/part3 rw
> Uncompressing Linux...done.
> Now booting the kernel

> It always stall on the Now booting the kernel.  Im new to linux
> building and any help or suggestions are greatly appreciated.

I have the same problem on a Avnet Memev Virtex-4 FX12 LC Board. I typed
"stop" in the xmd and got an Instruction pointer. I took this
instruction pointer and called:

(thinkpad) [/scratch/tg/linux-2.6-ppc] powerpc-405-linux-gnu-objdump -dS vmlinux | less
/^c00045ac

c00045a0 <__delay>:
c00045a0:       2c 03 00 00     cmpwi   r3,0
c00045a4:       7c 69 03 a6     mtctr   r3
c00045a8:       4d 82 00 20     beqlr
c00045ac:       42 00 00 00     bdnz-   c00045ac <__delay+0xc> <<<< HERE
c00045b0:       4e 80 00 20     blr

which is called from the calibrating delay loop. The calibrating delay
loop is an endless loop if the jiffies do not get incremented. Which is
the case if there are no timer ticks for whatever reason. Reasons could
be:

        - PIT or FIT don't get initialized
        - Interrupts are disabled
        - No interrupt handler registerd or registered for the wrong iq.

However the calibrating delay loop is before the serial console
initialization code. The "Now booting the kernel" line comes from the in
kernel embedded bootloader just before it initalizes the MMU and jumps
to "start_kernel".

If you do any progress on that, please let me know. I am currently
extremly busy, so I don't have time at the moment to debug that any
further.

        Thomas

Re: Porting Linux to Xilinx ML410

[khollan]

I fixed my error.  I was using gcc 4.1.0 and read some other threads here
and found that there is a linker error in gcc 4.1.0  So I created a new
toolchain with crosstool with gcc 4.0.2 and my system booted until it tried
to mount the root file system like I had planned.  Now Ill have to create a
rfs and see if it will boot all the way.

Thanks for your replies

Kevin

-- 
View this message in context: http://www.nabble.com/Porting-Linux-to-Xilinx-ML410-tf3989483.html#a11347823
Sent from the linuxppc-embedded mailing list archive at Nabble.com.

Re: Porting Linux to Xilinx ML410

[khollan]

Im trying to mount the root file system off of compact flash and now I get
this happening during boot

xsysace xsa: kicking stalled fsm; state=2 task=0 iter=1 dc=0
xsysace xsa: kicking stalled fsm; state=2 task=0 iter=1 dc=0
xsysace xsa: kicking stalled fsm; state=2 task=0 iter=1 dc=0

any ideas what this is and how to fix it?  I tried applying a patch that
talked about this but my version of xsysace.c already had those changes.

Thanks

Kevin
-- 
View this message in context: http://www.nabble.com/Porting-Linux-to-Xilinx-ML410-tf3989483.html#a11401755
Sent from the linuxppc-embedded mailing list archive at Nabble.com.

Re: Porting Linux to Xilinx ML410

[Grant Likely]

On 7/2/07, khollan <khollan@daktronics.com> wrote:
>
> Im trying to mount the root file system off of compact flash and now I get
> this happening during boot
>
> xsysace xsa: kicking stalled fsm; state=2 task=0 iter=1 dc=0
> xsysace xsa: kicking stalled fsm; state=2 task=0 iter=1 dc=0
> xsysace xsa: kicking stalled fsm; state=2 task=0 iter=1 dc=0
>
> any ideas what this is and how to fix it?  I tried applying a patch that
> talked about this but my version of xsysace.c already had those changes.

It means the driver is not getting interrupts from the systemace
device, so it's reverting to (extremely slow) polling.

g.

-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely@secretlab.ca
(403) 399-0195

Re: Porting Linux to Xilinx ML410

[khollan]

Thanks I fixed the error, my system ace hardware wasn't working correctly.
Now I have a new problem during the init process.  It gives me this message

Starting pid 213 tty '': '/sbin/getty'
process '/sbin/getty 9600 ttyUL0 (pid 213) exited. Scheduling it for
restart.

And it tries to respawn it indefinetly.
If I pass the kernel command Init=/bin/sh I can get into the shell correctly
Any Ideas what this problem is?
Thanks for your help
Kevin
-- 
View this message in context: http://www.nabble.com/Porting-Linux-to-Xilinx-ML410-tf3989483.html#a11453962
Sent from the linuxppc-embedded mailing list archive at Nabble.com.