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From: Anton Vorontsov <avorontsov@ru.mvista.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] mpc83xx: spd_sdram: fix ddr sdram base address assignment	bug
Date: Thu, 11 Sep 2008 21:35:36 +0400	[thread overview]
Message-ID: <20080911173536.GA31848@oksana.dev.rtsoft.ru> (raw)

The spd_dram code shifts the base address, then masks 20 bits, but
forgets to shift the base address back. Fix this by just masking the
base address correctly.

Found this bug while trying to relocate a DDR memory at the base != 0.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
---
 cpu/mpc83xx/spd_sdram.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/cpu/mpc83xx/spd_sdram.c b/cpu/mpc83xx/spd_sdram.c
index 76f2474..f4a0e90 100644
--- a/cpu/mpc83xx/spd_sdram.c
+++ b/cpu/mpc83xx/spd_sdram.c
@@ -274,7 +274,7 @@ long int spd_sdram()
 	/*
 	 * Set up LAWBAR for all of DDR.
 	 */
-	ecm->bar = ((CFG_DDR_SDRAM_BASE>>12) & 0xfffff);
+	ecm->bar = CFG_DDR_SDRAM_BASE & 0xfffff000;
 	ecm->ar  = (LAWAR_EN | LAWAR_TRGT_IF_DDR | (LAWAR_SIZE & law_size));
 	debug("DDR:bar=0x%08x\n", ecm->bar);
 	debug("DDR:ar=0x%08x\n", ecm->ar);
-- 
1.5.6.3

             reply	other threads:[~2008-09-11 17:35 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-11 17:35 Anton Vorontsov [this message]
2008-09-22 22:08 ` [U-Boot] [PATCH] mpc83xx: spd_sdram: fix ddr sdram base address assignment bug Kim Phillips

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