arm: select HAVE_DMA_CONTIGUOUS

During a recent merge conflict, this option was removed by
mistake. Add it back.

Change-Id: Ic1a806d90a0d1ae24ed04f938e411fb1ebf4fe08
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
arm: Kconfig: Disable CONFIG_OABI_COMPAT feature on SMP targets

When this option is enabled to support Old ABI, it introduces
a race condition in swap-out code on SMP, such that
instruction is available to the instruction stream (SWI
instruction) but not the data stream.

CPU0		CPU1
clears pte
		executes instruction from page,
		already has I-TLB but no D-TLB entry,
		takes SWI exception
		tries to load instruction, data abort
tlb flush

Therefore, disable this feature on SMP targets.

Change-Id: I4cc4e6924cfcffad391fe2e68d5aa62eee613b0e
Signed-off-by: Jay Chokshi <jchokshi@codeaurora.org>
Kconfig: Add config option to support vmalloc savings

The virtual space belonging to any subsystem which is
expected to have a lifetime of the entire system can be
reclaimed. Adding config option to enable or disable
this feature.

Change-Id: I56faef4b71c948185fdfe336054a5951dfa8d011
Signed-off-by: Neeti Desai <neetid@codeaurora.org>
Kconfig: Add menu choice option to reclaim virtual memory

Add menu choice options for selecting the method of reclaiming
virtual memory, either by mapping around the largest hole or
reclaiming virtual memory belonging to any subsystem expected to
have a lifetime of the entire system. By default virtual memory
is not reclaimed.

Change-Id: I1b8a1492062bb9532700122878618989e5148647
Signed-off-by: Neeti Desai <neetid@codeaurora.org>
arm: Add ARCH_RANDOM Kconfig

Some boards may support architecture generated random numbers. Add
the appropriate Kconfig.

Change-Id: I0077a982c9bb6d3a35435cc27fe40b7e0596ca84
CRs-Fixed: 498392
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
msm: implement ARCH_RANDOM

Currently, the software random number generator is not intialized
until relatively late in the boot process. Software that relies on
random numbers early will not be reliable. Entropy sources are
available early but not early enough for some use cases which means
that moving the software random number generation earlier is not an
option. As an alternate solution, implement the functions associated
with CONFIG_ARCH_RANDOM. These functions currently make a call into
trustzone to get reliable random numbers. The functions are disabled
once the regular random number generator is sufficiently reliable.

Change-Id: If40cfcb96b091fa26a28047c10a902287b26f6c1
CRs-Fixed: 498392
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>

Conflicts:
	arch/arm/mach-msm/Makefile