[U-Boot] How !, Adding a New Device to U-Boot.

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renjith kumar

19 Mar 2009 19 Mar '09

3:21 a.m.

hi ,

I was wondering , is there any Discussion or document that describe the way how I can Add a new device to u-Boot.

For example , I have two sequoa based, Custom design.

1) . I have an FPGA Device at the EBC port of EPx in the second design.

2) . In a second case, I have an FPGA Device as the PCI card for ppc440EPx. (May be ok with Normal PCI Detection, but How to drive it ? Any standard approach).

As I wanted to detect the both the devices (both the cases) , where should I start with Or Whats the Standard procedure I need to follow.

I know that adding a Device to U-Boot is Simple (if you know how to do it :( ). In another thread, I found somebody adding memory Base to tlbentry() and all .. Is it the sufficient thing ? I have worked with U-Boot , but it was all small changes , wrt freq/ GPIO settings. Any Advice would be appreciated, and looking forward...

-- Thanks'n Regards, Renjith.

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Wolfgang Denk

19 Mar 19 Mar

8:09 a.m.

Dear renjith kumar,

In message a8474bd70903181921p383be5aatcf36a1727f8f3085@mail.gmail.com you wrote:

...

I was wondering , is there any Discussion or document that describe the way how I can Add a new device to u-Boot.

There is the README, and there is the U-Boot home page, especially http://www.denx.de/wiki/U-Boot/Patches

...

For example , I have two sequoa based, Custom design.

. I have an FPGA Device at the EBC port of EPx in the second design.

. In a second case, I have an FPGA Device as the PCI card for ppc440EPx.

(May be ok with Normal PCI Detection, but How to drive it ? Any standard approach).

If this is the only difference, then eventually a single new board configuration may be sufficient.

Best regards,

Wolfgang Denk

-- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de If the odds are a million to one against something occuring, chances are 50-50 it will.

renjith kumar

9:41 a.m.

Dear Wolfgang Denk,

Yes , this is the main configuration changes that I need to worry abt. One quick Doubt, here.... Did you mean, a Same Sequoia configuration can still be OK for this, so that it can list out the two devices (FPGA in EBC and FPGA in PCI interfaces) ?? (provided the clock/Cristal values/settings remain same) .

2) Also , wish to know one more thing along side , Does U-Boot support PCI-SATA Device support , so that I can boot from a SATA - HDD ???

-- Thanks'n Regards, Renjith. * On Thu, Mar 19, 2009 at 12:39 PM, Wolfgang Denk wd@denx.de wrote: > Dear renjith kumar, > > In message a8474bd70903181921p383be5aatcf36a1727f8f3085@mail.gmail.com > you wrote: > > > > I was wondering , is there any Discussion or document that describe the > way > > how I can Add a new device to u-Boot. > > There is the README, and there is the U-Boot home page, especially > http://www.denx.de/wiki/U-Boot/Patches > > > For example , I have two sequoa based, Custom design. > > > > 1) . I have an FPGA Device at the EBC port of EPx in the second design. > > > > 2) . In a second case, I have an FPGA Device as the PCI card for > ppc440EPx. > > (May be ok with Normal PCI Detection, but How to drive it ? Any standard > > approach). > > If this is the only difference, then eventually a single new board > configuration may be sufficient. > > Best regards, > > Wolfgang Denk > > -- > DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de > If the odds are a million to one against something occuring, chances > are 50-50 it will. >

Wolfgang Denk

9:54 a.m.

Dear renjith kumar,

A: Because it messes up the order in which people normally read text.

Q: Why is it such a bad thing?

A: Top-posting.

Q: What is the most annoying thing on usenet and in e-mail?

And you not only top-post, you also full-quote. Please make sure to read http://www.netmeister.org/news/learn2quote.html

In message a8474bd70903190141t17658adaxc22437666be83b8d@mail.gmail.com you wrote:

...

Yes , this is the main configuration changes that I need to worry abt. One quick Doubt, here.... Did you mean, a Same Sequoia configuration can still be OK for this, so that it can list out the two devices (FPGA in EBC and FPGA in PCI interfaces) ?? (provided the clock/Cristal values/settings remain same) .

I don't know your hardware. I cannot comment on this.

...

Also , wish to know one more thing along side , Does U-Boot support PCI-SATA Device support , so that I can boot from a SATA - HDD ???

On some boards / for some S-ATA controllers it does.

[Full quote deleted.]

Best regards,

Wolfgang Denk

-- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de If I ever needed a brain transplant, I'd choose a teenager's because I'd want a brain that had never been used.

renjith kumar

11:01 a.m.

Dear Wolfgang Denk & friendz,

...

And you not only top-post, you also full-quote. Please make sure to read http://www.netmeister.org/news/learn2quote.html

I am sorry for my crazy randoms mails. Let me correct it henceforth. Thanking you for your supports.

-- *Rgrds, Renjith*.

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