From mboxrd@z Thu Jan  1 00:00:00 1970
From: York Sun <yorksun@freescale.com>
Date: Mon, 9 Nov 2015 15:54:39 -0800
Subject: [U-Boot] Secure memory
In-Reply-To: <563D2557.6040302@freescale.com>
References: <563D2557.6040302@freescale.com>
Message-ID: <5641323F.5070102@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



On 11/06/2015 02:10 PM, York Sun wrote:
> Albert,
> 
> I am trying to separate secure memory and non-secure memory for ARMv8. Before I
> go too far, I'd like to check with you to see if there is already some code
> implemented.
> 
> Basically what I am trying to do is to mark most DDR memory non-secure because
> we have some non-secure masters such as SDHC DMA. I also want to reserve some
> memory for TrustZone application. In order to do that, I need to put the MMU
> tables in secure memory. I will need to modify common/board_f.c to process
> reserve_mmu() differently for secure and non-secure mode.
> 
> Please let me know if running u-boot in non-secure mode is a bad idea.
> 

I didn't hear from you so I went ahead to implement the change. Please review
the patches, coming soon.

York