From: yegor_sub1@visionsystems.de (Yegor Yefremov)
To: linux-arm-kernel@lists.infradead.org
Subject: AT91: how to use additional 128mb RAM on the at91sam9g45ek?
Date: Thu, 22 Apr 2010 16:42:22 +0200 [thread overview]
Message-ID: <4BD0604E.7060209@visionsystems.de> (raw)
I use at91sam9g45-ek with the kernel 2.6.33. Following this post http://www.at91.com/forum/viewtopic.php/f,12/t,18589/p,30450/ I configured 256Mb in U-Boot, but when Linux kernel starts it ignores the second area saying:
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: Atmel AT91SAM9G45-EKES
Memory policy: ECC disabled, Data cache writeback
Ignoring RAM at 20000000-27ffffff (vmalloc region overlap).
Clocks: CPU 400 MHz, master 133 MHz, main 12.000 MHz
The first area 0x70000000-0x77ffffff will be mapped to 0xc0000000
the second area 20000000-27ffffff will be mapped to 0x70000000, that is smaller than 0xc0000000 and thus invalid.
What can I do to use RAM from both banks to get 256Mb of RAM?
Best regards,
Yegor
reply other threads:[~2010-04-22 14:42 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=4BD0604E.7060209@visionsystems.de \
--to=yegor_sub1@visionsystems.de \
--cc=linux-arm-kernel@lists.infradead.org \
/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.