From mboxrd@z Thu Jan  1 00:00:00 1970
From: Timur Tabi <timur@freescale.com>
Date: Mon, 17 May 2010 09:11:22 -0500
Subject: [U-Boot] hardware flash protect kept during a reboot?
In-Reply-To: <201005171055.05858.sr@denx.de>
References: <4BEDA588.8080107@freescale.com> <201005171055.05858.sr@denx.de>
Message-ID: <4BF14E8A.3030804@freescale.com>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

Stefan Roese wrote:
> This protection is chip specific. IIRC, then some Intel (Strata) chips either 
> protect all sectors or have a sectore-wise protection mechanism. You need to 
> check your FLASH documentation for the exact behaviour. Which chip are you 
> using?

I just want to know whether hardware protection works at all for anyone
through a reboot.  Is the CFI "protect sector" command persistent through a
hardware power reset or power loss?

> Please note that we have the special "unlock" env variable. By setting it to 
> "yes", all sectors will be unlocked upon startup. At least on Intel Strata 
> FLASH chips.

I put a printf() in flash_real_protect(), so I know that's not the problem.

-- 
Timur Tabi
Linux kernel developer at Freescale