Problem booting Linux on MPC8XXFADS

Problem booting Linux on MPC8XXFADS

[Sven Boehringer]

Hi all,

i read the lists and some manuals but i can't find any solution that fit
to my problem.
I use ppcboot-1.1.4 (yes i know, there is a newer one :-) an the
kernel-sources 2.4.17 (from ftp.kernel.org). As HW i use a MPX8xxFADS
with an 855T on it:


-PPCBoot 1.1.4 (Mar 25 2002 - 11:33:16)

-CPU:   XPC860xxZPnnD3 at 49.800 MHz: 4 kB I-Cache 4 kB D-Cache FEC
present
-Board: FADS with db MPC821, MPC860 / MPC860SAR / MPC860T rev ENG or
PILOT
-DRAM:  (4 MB SDRAM) 12 MB
-FLASH:  2 MB
-In:    serial
-Out:   serial
-Err:   serial

The boot messages looking like this:


=>bootm 0200000
## Booting image at 00200000 ...
   Image Name:   2.4.17 Ver.0.2
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:    475397 Bytes = 464 kB = 0 MB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK

An then no further output :-(
I also tried, that with 2.4.4-Sources from ftp.denx.de
(linux-2.4.4-2002-03-21.tar.bz2) but still the same problem. And i also
downloaded the kernel image to 02840000 which ist the base adress of my
flash memory, looks the same.

And i also checked the following sentences in the README:
<snip>
Just make sure your machine specific header file (for instance
include/asm-ppc/tqm8xx.h) includes the same definition of the Board
Information structure as we define in include/ppcboot.h, and make
sure that your definition of IMAP_ADDR uses the same value as your
PPCBoot configuration in CFG_IMMR.
<snip>


But i have still problems at this point.


can somebody help me? Sorry if that is a newbie question..

thanks in advance,

Sven

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Re: Problem booting Linux on MPC8XXFADS

[Wolfgang Denk]

In message <3C9F67A5.827D4BBC@snom.de> you wrote:
>
> i read the lists and some manuals but i can't find any solution that fit
> to my problem.

One possible solution: get yourself a debugger...

>    Verifying Checksum ... OK
>    Uncompressing Kernel Image ... OK
>
> An then no further output :-(
> I also tried, that with 2.4.4-Sources from ftp.denx.de
> (linux-2.4.4-2002-03-21.tar.bz2) but still the same problem. And i also
...
> can somebody help me? Sorry if that is a newbie question..

Check that you have configured the console on the correct  port;  you
should be able to get a good configuration with

	$ make FADS860_config
	$ make oldconfig
	$ make dep
	$ make pImage

If it still hangs, try a post-mortem dump of the log_buf  area  (grep
the  address  from  the  System.map  file  for  your kernel, subtract
0xC0000000 to get the physical address, and use the "md"  command  in
PPCBoot to dump that area).

But you should be aware - your chances to succesfully run Linux on  a
FADS rev ENG or PILOT board are pretty limted anyway.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
Testing can show the presense of bugs, but not their absence.
                                                   -- Edsger Dijkstra

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Re: Problem booting Linux on MPC8XXFADS

[Michael Habermann]

At 07:08 PM 3/25/2002 +0100, Sven Boehringer wrote:
>And i also checked the following sentences in the README:
><snip>
>Just make sure your machine specific header file (for instance
>include/asm-ppc/tqm8xx.h) includes the same definition of the Board
>Information structure as we define in include/ppcboot.h, and make
>sure that your definition of IMAP_ADDR uses the same value as your
>PPCBoot configuration in CFG_IMMR.
><snip>
>

You also have to compare the configuration of the ppcboot header file
config_FADS860.h and the mpc8xx 'make menuconfig'-configuration of the
kernel. The SMCs and SCCs are easily misconfigured.


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Re: Problem booting Linux on MPC8XXFADS

[Wolfgang Denk]

In message <3CA03437.5E724251@snom.de> you wrote:
>
> > Check that you have configured the console on the correct  port;  you
> > should be able to get a good configuration with
> >
> >         $ make FADS860_config
> >         $ make oldconfig
> >         $ make dep
> >         $ make pImage
>
> Thanks for that hint. With your sources (linux-2.4.4-2002-03-21.tar.bz2)
> and the configuration it works! Now i try to port that to 2.4.17

Fine.

> (possible? :-).

Better use 2_4_devel ...

> > But you should be aware - your chances to succesfully run Linux on  a
> > FADS rev ENG or PILOT board are pretty limted anyway.
>
> What exactly do you mean with "be aware of"? Are there any common
> failures with that board? Unfortunately, i have to use this Board :-(

The  (F)ADS8xx  is  (in)famous.  Maybe  it  was  sponsered   by   the
unemployment  office  to keep all these programmers busy, hunting for
software problems for weeks and weeks and weeks (util  they  realized
they had hardware problems).

You don't have to use this board.

There are alternative solutions. Just divide the  price  for  another
board  (stable  hardware with full Linux support) by your hourly rate
and you probably already now wasted money on the FADS...

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
No journaling file system can recover your data if the disk dies.
                                 - Steve Rago in <D4Cw1p.L9E@plc.com>

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RE: Problem booting Linux on MPC8XXFADS

[Clayton, Mark]

> You don't have to use this board.
>
> There are alternative solutions. Just divide the  price  for  another
> board  (stable  hardware with full Linux support) by your hourly rate
> and you probably already now wasted money on the FADS...
>

If all decisions were left up to us engineers, then it would be this simple
:)

Mark


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Re: Problem booting Linux on MPC8XXFADS

[Wolfgang Denk]

Dear Mark,

in message <076236BAE727D611943F00508BA0F95908DAD0@XOVER.dedham.mindspeed.com> you wrote:
>
> > There are alternative solutions. Just divide the  price  for  another
> > board  (stable  hardware with full Linux support) by your hourly rate
> > and you probably already now wasted money on the FADS...
>
> If all decisions were left up to us engineers, then it would be this simple
> :)

Usually even a manager does understand the terms "time" and  "money".
If this is not enough, whisper something about "market window" :-)

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
"More software projects have gone awry for lack of calendar time than
for all other causes combined."
                         - Fred Brooks, Jr., _The Mythical Man Month_

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Problem booting Linux on MPC8XXFADS

[Hamid Marshall]

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Hi Sven,

Were you able to resolve your Linux boot problem on this board. Let me know
what steps you took to resolve this.

 

 

Thanks,

 

 

 

Hamid Marshall

 


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