From e66f38da8434425aca8df08d06d9ef41b3478d3b Mon Sep 17 00:00:00 2001
From: Timur Tabi <timur@freescale.com>
Date: Wed, 1 Jul 2009 16:51:59 -0500
Subject: [PATCH] fsl_ddr: Fix DDR3 calculation of rank density with 8GB or
more
The calculate for rank density in compute_ranksize() for DDR3 used all
integers for the expression, so the result was also a 32-bit integer, even
though the 'bsize' variable is a u64. Fix the expression to calculate a
true 64-bit value.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
cpu/mpc8xxx/ddr/ddr3_dimm_params.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/cpu/mpc8xxx/ddr/ddr3_dimm_params.c b/cpu/mpc8xxx/ddr/ddr3_dimm_params.c
index 8d686ac5d91..13d234e9331 100644
--- a/cpu/mpc8xxx/ddr/ddr3_dimm_params.c
+++ b/cpu/mpc8xxx/ddr/ddr3_dimm_params.c
@@ -68,7 +68,7 @@ compute_ranksize(const ddr3_spd_eeprom_t *spd)
if ((spd->organization & 0x7) < 4)
nbit_sdram_width = (spd->organization & 0x7) + 2;
- bsize = 1 << (nbit_sdram_cap_bsize - 3
+ bsize = 1ULL << (nbit_sdram_cap_bsize - 3
+ nbit_primary_bus_width - nbit_sdram_width);
debug("DDR: DDR III rank density = 0x%08x\n", bsize);
--
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