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.b...@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.sricha...@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-ste...@ti.com>
[1] http://www.mail-archive.com/u-boot@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@lists.denx.de/msg102709.html
I did not repost it though. I will do it now for clarity.
Regards,
Sricharan
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