[U-Boot-Users] implementation of lowboot for pq2fads-zu board

[U-Boot-Users] implementation of lowboot for pq2fads-zu board

[Nethra]

hi,
i am new to linux, kindly help me to solve my problem.
1. I am using
               u-boot-1.1.1
               pq2fads-zu board
               bdi 2000
               
now it is in high boot,but i want to change it to lowboot what are all the
changes to be made in include/configs/mpc8260ads.h
board/mpc8260/config.mk
cpu/mpc8260
Makefile

kindly suggest the changes to be done.


2. if i want do changes in u-boot-1.1.1for custom board what are all the
changes to be done.

thanks
Nethra

 
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[U-Boot-Users] implementation of lowboot for pq2fads-zu board

[Ben Warren]

Nethra,

On Fri, 2006-11-03 at 04:03 -0800, Nethra wrote:

> kindly suggest the changes to be done.
> 
> 
> 2. if i want do changes in u-boot-1.1.1for custom board what are all the
> changes to be done.
> 
> thanks
> Nethra

Here are the initial steps.  Once you've completed them, feel free to
post follow-on questions:

1.	The U-boot code that you have is old.  Please get the latest,
nominally version 1.1.6, which is available at
git://www.denx.de/git/u-boot.git  

You'll need to install and learn the 'git' source code control
application.  I'd explain how, but you'll learn much more if you figure
it out for yourself.  Google will help you here.  OK, here's one link:
http://www.kernel.org/pub/software/scm/git/docs/everyday.html#Individual
%20Developer%20(Participant)

2.	Read the excellent documentation at
http://www.denx.de/wiki/DULG/Manual

3.	Read the README that accompanies the U-boot code.  There is a section
on code porting that will be useful.  There is also lots of
documentation in the /doc directory, some of which may be helpful to
you.

4.	Read and understand the source code for the 'pq2fads' board that your
custom board is based on.

regards,
Ben

[U-Boot-Users] implementation of lowboot for pq2fads-zu board

[Jerry Van Baren]

Ben Warren wrote:
> Nethra,
> 
> On Fri, 2006-11-03 at 04:03 -0800, Nethra wrote:
> 
>> kindly suggest the changes to be done.
>>
>>
>> 2. if i want do changes in u-boot-1.1.1for custom board what are all the
>> changes to be done.
>>
>> thanks
>> Nethra
> 
> Here are the initial steps.  Once you've completed them, feel free to
> post follow-on questions:
> 
> 1.	The U-boot code that you have is old.  Please get the latest,
> nominally version 1.1.6, which is available at
> git://www.denx.de/git/u-boot.git  
> 
> You'll need to install and learn the 'git' source code control
> application.  I'd explain how, but you'll learn much more if you figure
> it out for yourself.  Google will help you here.  OK, here's one link:
> http://www.kernel.org/pub/software/scm/git/docs/everyday.html#Individual
> %20Developer%20(Participant)
> 
> 2.	Read the excellent documentation at
> http://www.denx.de/wiki/DULG/Manual
> 
> 3.	Read the README that accompanies the U-boot code.  There is a section
> on code porting that will be useful.  There is also lots of
> documentation in the /doc directory, some of which may be helpful to
> you.
> 
> 4.	Read and understand the source code for the 'pq2fads' board that your
> custom board is based on.
> 
> regards,
> Ben

Do all of the above, then when you make your configuration, use the 
PQ2FADS-ZU_lowboot_config:
$ make PQ2FADS-ZU_lowboot_config

Look at the top level Makefile to see what it is doing, it is putting 
some customizing stuff in the include/config.h file (make the 
configuration and then look in the config.h file).

You need to switch a jumper J7 to short pins 1-2 (default is 2-3) to 
switch from fetching the HRCW from the BCSR register to fetching the 
HRCW from flash.

DON'T erase the high boot version of u-boot - by switching the jumper J7 
back, you can recover from loading a bad u-boot in the lowboot position 
by reloading a good lowboot u-boot.  DAMHIKT.

gvb

[U-Boot-Users] implementation of lowboot for pq2fads-zu board

[Wolfgang Denk]

In message <7156253.post@talk.nabble.com> you wrote:
> 
> 1. I am using
>                u-boot-1.1.1
>                pq2fads-zu board
>                bdi 2000
>                
> now it is in high boot,but i want to change it to lowboot what are all the
> changes to be made in include/configs/mpc8260ads.h
> board/mpc8260/config.mk
> cpu/mpc8260
> Makefile
> 
> kindly suggest the changes to be done.

It's a 3 stage procedure.

Step 1 is reading the documentation and understanding the hardware
(and I mean *really* understanding it).

Step 2 is updating to current code, i. e. top of tree in the git repo,
or at least U-Boot version 1.1.6.

Step 3 is implementing the changes.

> 2. if i want do changes in u-boot-1.1.1for custom board what are all the
> changes to be done.

You don't want to use this ancient version for current  work.  Please
use  the *current* version ( top of tree in the git repo) for all new
work.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Real programmers can write assembly code in any language.   :-)
                      - Larry Wall in  <8571@jpl-devvax.JPL.NASA.GOV>

[U-Boot-Users] implementation of lowboot for pq2fads-zu board

[Nethra]

hi, 
  i am working on pq2fads-zu board. 
1.  It supports flash of size 8mb.but i want to change to 32 how to do it. 
2. it works at 64mb sdram and i want to change it to 128mb. 

plz suggest correct the changes to be done....awaiting for early response.


> 1. I am using
>                u-boot-1.1.1
>                pq2fads-zu board
>                bdi 2000
>                
> now it is in high boot,but i want to change it to lowboot what are all the
> changes to be made in include/configs/mpc8260ads.h
> board/mpc8260/config.mk
> cpu/mpc8260
> Makefile
> 
> kindly suggest the changes to be done.

It's a 3 stage procedure.

Step 1 is reading the documentation and understanding the hardware
(and I mean *really* understanding it).

Step 2 is updating to current code, i. e. top of tree in the git repo,
or at least U-Boot version 1.1.6.

Step 3 is implementing the changes.

> 2. if i want do changes in u-boot-1.1.1for custom board what are all the
> changes to be done.

You don't want to use this ancient version for current  work.  Please
use  the *current* version ( top of tree in the git repo) for all new
work.

Best regards,

Wolfgang Denk


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[U-Boot-Users] implementation of lowboot for pq2fads-zu board

[Nethra]

hi,
i am new to linux, kindly help me to solve my problem.
1. I am using
               u-boot-1.1.1
               pq2fads-zu board
               bdi 2000
               
now it is in high boot,but i want to change it to lowboot what are all the
changes to be made in include/configs/mpc8260ads.h
board/mpc8260/config.mk
cpu/mpc8260
Makefile

kindly suggest the changes to be done.


2. if i want do changes in u-boot-1.1.1for custom board what are all the
changes to be done.

thanks
Nethra

 
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