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From: Albert ARIBAUD <albert.aribaud@free.fr>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] config.mk: add drivers as default include PATH
Date: Thu, 16 Dec 2010 14:10:16 +0100	[thread overview]
Message-ID: <4D0A0FB8.5070202@free.fr> (raw)
In-Reply-To: <20101216121859.0CAE4BB0BA@gemini.denx.de>

Le 16/12/2010 13:18, Wolfgang Denk a ?crit :

> SDRAM should not be initialized in lowlevel_init.S. Please use the
> (new for ARM, shared with PPC which has always been using this) model
> where RAM initialization is done in dram_init(), i. e. as part of the
> init sequence in arch/arm/lib/board.c

Just a note: some ARM SoCs may not have IRAM easily available (Marvell 
5182 for instance; it may not even be able to use its data cache for 
IRAM). In this case, even setting up a partial C environment for 
board_init_f may require initializing SDRAM in lowlevel_init.S.

Amicalement,
-- 
Albert.

      parent reply	other threads:[~2010-12-16 13:10 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-15  7:27 [U-Boot] [PATCH] config.mk: add drivers as default include PATH Macpaul Lin
2010-12-15 10:53 ` Wolfgang Denk
2010-12-16 10:10   ` Macpaul Lin
2010-12-16 12:18     ` Wolfgang Denk
2010-12-16 12:52       ` Macpaul Lin
2010-12-16 13:10       ` Albert ARIBAUD [this message]

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