[PATCH v3 0/2] ARM: PJ4B: fixes for 3.10-rc

[Gregory CLEMENT]

Hello,

This path set allows to fix some errata for PJ4B CPUs.

Without the first one, the Armada 370 based board can't boot anymore
since 3.10-rc1 . So this one really need to be applied on 3.10-rc.

It should be a good thing to apply the other one on the 3.10-rc, even
if we didn't observe get feedback from user who had a problem related
to these errata, it may happen.

Note that currently PJ4B is a symbol for 2 different CPUs:

- the one used in Armada 370 is a PJ4B
- the ones used in Armada XP are actually PJ4B-MP

So I planed to introduce a new symbol PJ4B-MP but for 3.11 as it is
not related to a critical fix. Awaiting these new symbols I made the
errata depends on ARMADA_370 in the Kconfig.

Changelog:
V1 -> V2;
 - Fixed various coding style and typo issues
 - Replaced the "mcr p15, 0, r0, c7, c10, 4" by  "dsb"
 - Removed the fix for errata 4611 in discard_old_kernel_data function,
   as we don't use it

V2 -> v3:
 - As suggested by Russell, the first errata is now applied
   dynamically accroding to the processor type
 - The second patch use use save/restore IRQ macros following Will's
   advices

Gregory CLEMENT (1):
  ARM PJ4B: Add support for errata 4742

Lior Amsalem (1):
  ARM PJ4B: Add support for errata 4611

 arch/arm/Kconfig                 | 22 ++++++++++++++++++++++
 arch/arm/include/asm/glue-proc.h |  9 +++++++++
 arch/arm/include/asm/tlbflush.h  | 22 ++++++++++++++++++++++
 arch/arm/mm/proc-macros.S        | 11 +++++++++++
 arch/arm/mm/proc-v7.S            | 38 +++++++++++++++++++++++++++++++++-----
 5 files changed, 97 insertions(+), 5 deletions(-)

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1.8.1.2