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Re: [PATCH 2/5] MIPS: bcm63xx: fix SDRAM size computation for BCM6345

To: Florian Fainelli <florian@openwrt.org>
Subject: Re: [PATCH 2/5] MIPS: bcm63xx: fix SDRAM size computation for BCM6345
From: Sergei Shtylyov <sshtylyov@mvista.com>
Date: Thu, 22 Sep 2011 14:20:50 +0400
Cc: ralf@linux-mips.org, linux-mips@linux-mips.org, Florian Fainelli <ffainelli@freebox.fr>
In-reply-to: <1316612390-6367-3-git-send-email-florian@openwrt.org>
References: <1316612390-6367-1-git-send-email-florian@openwrt.org> <1316612390-6367-3-git-send-email-florian@openwrt.org>
Sender: linux-mips-bounce@linux-mips.org
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Hello.

On 21-09-2011 17:39, Florian Fainelli wrote:

From: Florian Fainelli<ffainelli@freebox.fr>

Instead of hardcoding the amount of available RAM, read the number of
effective multiples of 8MB from SDRAM_MBASE_REG.

Signed-off-by: Florian Fainelli<florian@openwrt.org>
---
  arch/mips/bcm63xx/cpu.c |    6 ++++--
  1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/mips/bcm63xx/cpu.c b/arch/mips/bcm63xx/cpu.c
index 7c7e4d4..7ad1b39 100644
--- a/arch/mips/bcm63xx/cpu.c
+++ b/arch/mips/bcm63xx/cpu.c
@@ -260,8 +260,10 @@ static unsigned int detect_memory_size(void)
        unsigned int cols = 0, rows = 0, is_32bits = 0, banks = 0;
        u32 val;

-       if (BCMCPU_IS_6345())
-               return (8 * 1024 * 1024);
+       if (BCMCPU_IS_6345()) {
+               val = bcm_sdram_readl(SDRAM_MBASE_REG);
+               return (val * 8 * 1024 * 1024);

   Parens not needed here.

WBR, Sergei

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