All of lore.kernel.org
 help / color / mirror / Atom feed
From: Detlev Zundel <dzu@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] Kernel copy from NOR to RAM
Date: Mon, 23 Aug 2010 17:28:18 +0200	[thread overview]
Message-ID: <m2sk2573hp.fsf@ohwell.denx.de> (raw)
In-Reply-To: <AANLkTi=iakQLOGn-ZmPj4fjw6sXEptg7Zdd2udVCLCkN@mail.gmail.com> (Nicolas Luna's message of "Mon, 23 Aug 2010 10:48:05 -0400")

Hi Nicolas,

> I'm using OMAP-L138 (ARM based) with NOR flash and I'll like to know in
> which file uboot copies kernel from NOR to RAM?

This will be the UBL which runs before U-Boot gets a chance to run.
Just before Stefano Babic's work on the dm365 platform all davinci
U-Boot ports configured CONFIG_SKIP_LOWLEVEL_INIT and thus relied on
being loaded by some other entity into RAM to the link address specified
during compilation.  In such setups U-Boot is actually a payload in an
AIS image.

There is some documentation out there on the web ([1], esp. [2]) - if
you have further questions, go ahead ;)

Cheers
  Detlev

[1] http://processors.wiki.ti.com/index.php/Category:OMAPL1
[2] http://processors.wiki.ti.com/index.php/Serial_Boot_and_Flash_Loading_Utility_for_OMAP-L138

-- 
Deutsches Grundgesetz Artikel 21 Absatz 1:
Die Parteien wirken bei der politischen Willensbildung des Volkes mit. Ihre
Gr?ndung ist frei. Ihre innere Ordnung mu?  demokratischen Grunds?tzen ent-
sprechen. Sie m?ssen ?ber die Herkunft und Verwendung ihrer Mittel sowie ?ber
ihr Verm?gen ?ffentlich Rechenschaft geben.
--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de

  parent reply	other threads:[~2010-08-23 15:28 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-23 14:48 [U-Boot] Kernel copy from NOR to RAM Nicolas Luna
2010-08-23 15:04 ` Albert ARIBAUD
2010-08-23 15:14   ` Nicolas Luna
2010-08-23 15:16     ` Nishanth Menon
2010-08-23 15:19       ` Nicolas Luna
2010-08-23 15:24         ` Rogan Dawes
2010-08-23 15:28 ` Detlev Zundel [this message]
2010-08-23 15:38   ` Nicolas Luna
2010-08-23 18:13     ` Stefano Babic

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=m2sk2573hp.fsf@ohwell.denx.de \
    --to=dzu@denx.de \
    --cc=u-boot@lists.denx.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.