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From: Steven Zedeck <saz@proliphix.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] Preserving frame buffer memory between uboot and Linux
Date: Fri, 2 Oct 2009 13:48:13 -0700 (PDT)	[thread overview]
Message-ID: <25722060.post@talk.nabble.com> (raw)


Hi,
We have a situation when we want to display an image towards the end of
Uboot's execution, before we boot Linux. I have that already.

However, my issue is that while Linux boots it mallocs a new frame buffer
and reinitializes the LCD controller with a new memory address. At the
moment in Uboot the frame buffer is at 0x23F39000. In Linux I see it being
mapped to 0x23980000.

Is there a way to force Linux to use the already-allocated frame buffer
memory so the image doesn't go away?

I am running on an Atmel AT91SAM9RL with Uboot 2008.10 and 2.6.28 Linux.

Thanks in advance,
Steve
-- 
View this message in context: http://www.nabble.com/Preserving-frame-buffer-memory-between-uboot-and-Linux-tp25722060p25722060.html
Sent from the Uboot - Users mailing list archive at Nabble.com.

             reply	other threads:[~2009-10-02 20:48 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-02 20:48 Steven Zedeck [this message]
2009-10-02 22:09 ` [U-Boot] Preserving frame buffer memory between uboot and Linux Wolfgang Denk
2009-10-05 14:09   ` Steven Zedeck
2009-10-05 14:15     ` Wolfgang Denk

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