From: Detlev Zundel <dzu@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] Relocating to my code.
Date: Wed, 24 Jun 2009 10:34:04 +0200 [thread overview]
Message-ID: <m2r5xakp37.fsf@ohwell.denx.de> (raw)
In-Reply-To: <4A3F43F0.4050603@deeopl.com> (prathika@deeopl.com's message of "Mon, 22 Jun 2009 14:12:24 +0530")
Hi Prathika,
> hi everyone,
> I am working on a card based on PPC440EP, I am porting u-boot on this card.
> As I understand, the PPC initially boots from the flash and then
> relocates itself to RAM address where there is board_init_r() and
> main_loop() is called.
Correct. Running from flash makes writing to flash (i.e. updating
images there) somewhat complicated.
> I have an application code that simply does a loop back on UART
> channel2. After all the initialization,
> I want to knock off the relocation code, board_init_r() and main_loop()
> execution in u-boot and relocate it to my application
> The application code will residing in flash. How can I do this....
> anyone kindly help me in this regard...........
Why do you want to run from flash - what exactly are you trying to do?
Did you think about the consequences, i.e. where will your code store
local variables, etc.?
Why do you want to use U-Boot in the first place if you do not want to
use its main functionality?
Cheers
Detlev
--
The mathematician's patterns, like the painter's or the poet's, must be
beautiful; the ideas, like the colours or the words, must fit together in a
harmonious way. Beauty is the first test: there is no permanent place in the
world for ugly mathematics. -- G. H. Hardy
--
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
next prev parent reply other threads:[~2009-06-24 8:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-22 8:42 [U-Boot] Relocating to my code prathika
2009-06-24 8:34 ` Detlev Zundel [this message]
[not found] ` <4A41EA8A.8080802@deeopl.com>
2009-06-24 13:39 ` Detlev Zundel
2009-06-25 3:27 ` prathika
2009-06-25 12:58 ` Detlev Zundel
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