linux-kernel - Re: [PATCH] mtd: gpmi: make blockmark swapping optional

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Message-ID: <532AB94D.1050406@freescale.com>
Date:	Thu, 20 Mar 2014 17:47:57 +0800
From:	Huang Shijie <b32955@...escale.com>
To:	Lothar Waßmann <LW@...O-electronics.de>
CC:	<y@...O-electronics.de>, Arnd Bergmann <arnd@...db.de>,
	Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>,
	Brian Norris <computersforpeace@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Fabio Estevam <fabio.estevam@...escale.com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Mark Rutland <mark.rutland@....com>,
	Pawel Moll <pawel.moll@....com>,
	Rob Herring <robh+dt@...nel.org>,
	Rob Landley <rob@...dley.net>,
	Russell King <linux@....linux.org.uk>,
	Sascha Hauer <kernel@...gutronix.de>,
	Shawn Guo <shawn.guo@...escale.com>,
	<devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-mtd@...ts.infradead.org>, <b47714@...escale.com>
Subject: Re: [PATCH] mtd: gpmi: make blockmark swapping optional

于 2014年03月20日 17:21, Lothar Waßmann 写道:
> Hi,
>
> Huang Shijie wrote:
>> 于 2014年03月19日 21:23, y@...o-electronics.de 写道:
>>> configurable via DT. This is required for the Ka-Ro electronics
>>> platforms.
>>>
>> If you disable the swapping, you will disable the NAND boot in actually.
>>
> No. All our modules do boot from NAND and none of them does the
> swapping.
>
>
It seems the NAND boot runs well by luck.

The ROM will do the swapping when it reads the BBT table written by the 
kobs-ng (or something else?).

If the BBT table is small, not bigger then a page, the NAND boot may 
runs well when you disable the swapping;
But it the BBT table is bigger, the ROM will get a corrupted BBT table.



thanks
Huang Shijie





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