From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sricharan R <r.sricharan@ti.com>
Date: Fri, 1 Mar 2013 09:57:25 +0530
Subject: [U-Boot] [PATCH 0/2] ARM: mmu: Set domain permissions to client
 access - build warnings!
In-Reply-To: <20130228160546.20a5c643@lilith>
References: <1357668505-30559-1-git-send-email-r.sricharan@ti.com>
	<20130228152044.00a8a9fa@lilith> <20130228160546.20a5c643@lilith>
Message-ID: <51302E2D.6090103@ti.com>
List-Id: <u-boot.lists.denx.de>
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To: u-boot@lists.denx.de

Hi Albert,

On Thursday 28 February 2013 08:35 PM, Albert ARIBAUD wrote:
> On Thu, 28 Feb 2013 15:20:44 +0100, Albert ARIBAUD
> <albert.u.boot@aribaud.net>  wrote:
>
>> (sorry for any duplicate of this mail)
>>
>> Hi R Sricharan,
>>
>> On Tue, 8 Jan 2013 23:38:22 +0530, R Sricharan<r.sricharan@ti.com>
>> wrote:
>>
>>> Currently for ARM based cpu's, mmu pagetable attributes are set with
>>> manager permissions for all 4GB address space. Because of this the
>>> 'execute never (XN)' permission is never checked on read sensitive
>>> regions which results in speculative aborts.
>>>
>>> This series changes the domain permissions of the full 4GB space
>>> to client access for OMAP socs. This avoids all the speculative
>>> aborts that are currently seen on OMAP5 secure devices.
>>>
>>> Tested on OMAP5 SDP (HS) soc.
>>>
>>> This series depends on [1] the patch sent by
>>> <Vincent Stehle<v-stehle@ti.com>
>>>
>>> [1] http://www.mail-archive.com/u-boot at lists.denx.de/msg102709.html
>>>
>>> R Sricharan (2):
>>>    ARM: mmu: Introduce weak dram_bank_setup function
>>>    ARM: mmu: Set domain permissions to client access
>>>
>>>   arch/arm/cpu/armv7/cache_v7.c                  |    3 ++
>>>   arch/arm/cpu/armv7/omap-common/hwinit-common.c |   35 ++++++++++++++++++++++++
>>>   arch/arm/include/asm/cache.h                   |    1 +
>>>   arch/arm/include/asm/system.h                  |   14 ++++++++++
>>>   arch/arm/lib/cache-cp15.c                      |   13 ++++++++-
>>>   5 files changed, 65 insertions(+), 1 deletion(-)
>>>
>> Series applied to u-boot-arm/master, thanks!
> Correction: I'd wrongly inferred from the testing done on OMAP5 that
> the series would build fine. However it appears that for targets
> omap4_sdp4430, omap4_panda and omap5_evm, patch 2/2 has warnings:
>
> hwinit-common.c: In function 'dram_bank_mmu_setup':
> hwinit-common.c:279:3: warning: implicit declaration of function
> 'set_section_dcache' [-Wimplicit-function-declaration]
>
> Luckily, I had not committed to the git repo yet.
>
> R Sicharan, can you please check and fix this warning?
>
> Amicalement,
Oh, thats because as i mentioned above, it depends on the below
patch from vincent .

   http://www.mail-archive.com/u-boot at lists.denx.de/msg102709.html

I did not repost it though.  I will do it now for clarity.

Regards,
  Sricharan