From: Stefan Roese <sr@denx.de>
To: linuxppc-dev@ozlabs.org
Subject: [PATCH] powerpc/40x: Add support for PPC40x boards with > 512MB SDRAM
Date: Wed, 10 Feb 2010 14:54:59 +0100 [thread overview]
Message-ID: <1265810099-31355-1-git-send-email-sr@denx.de> (raw)
This patch adds support for boards with more that 512MByte RAM. Currently
only 512MB of memory are enabled in the DCCR/ICCR real-mode cache
control registers. This patch now enables caching in real-mode for
2GByte.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com>
---
arch/powerpc/mm/40x_mmu.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/mm/40x_mmu.c b/arch/powerpc/mm/40x_mmu.c
index 08dfa8e..65abfcf 100644
--- a/arch/powerpc/mm/40x_mmu.c
+++ b/arch/powerpc/mm/40x_mmu.c
@@ -84,8 +84,8 @@ void __init MMU_init_hw(void)
* vectors and the kernel live in real-mode.
*/
- mtspr(SPRN_DCCR, 0xF0000000); /* 512 MB of data space at 0x0. */
- mtspr(SPRN_ICCR, 0xF0000000); /* 512 MB of instr. space at 0x0. */
+ mtspr(SPRN_DCCR, 0xFFFF0000); /* 2GByte of data space at 0x0. */
+ mtspr(SPRN_ICCR, 0xFFFF0000); /* 2GByte of instr. space at 0x0. */
}
#define LARGE_PAGE_SIZE_16M (1<<24)
--
1.6.6.1
next reply other threads:[~2010-02-10 13:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-10 13:54 Stefan Roese [this message]
2010-02-11 2:39 ` [PATCH] powerpc/40x: Add support for PPC40x boards with > 512MB SDRAM Benjamin Herrenschmidt
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=1265810099-31355-1-git-send-email-sr@denx.de \
--to=sr@denx.de \
--cc=linuxppc-dev@ozlabs.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).