The non-scalar ktime_t implementation is basically a timespec
which has to be changed to support dates past 2038 on 32bit
systems.

This patch removes the non-scalar ktime_t implementation, forcing
the scalar s64 nanosecond version on all architectures.

This may have additional performance overhead on some 32bit
systems when converting between ktime_t and timespec structures,
however the majority of 32bit systems (arm and i386) were already
using scalar ktime_t, so no performance regressions will be seen
on those platforms.

On affected platforms, I'm open to finding optimizations, including
avoiding converting to timespecs where possible.

[ tglx: We can now cleanup the ktime_t.tv64 mess, but thats a
  different issue and we can throw a coccinelle script at it ]
Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NJohn Stultz <john.stultz@linaro.org>

Select CLKSRC_OF for PXA architectures.
Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

The addition of Exynos to multi-platform configs creates a mess of config
options with options appearing before the Exynos config option. This is
due to arch/arm/plat-samsung/Kconfig being included out of order with the
other Samsung platform kconfig files. Reorder the kconfig files and move
all the options into a sub-menu. Some of the options are dead, so remove
those as well.
Signed-off-by: NRob Herring <robh@kernel.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: linux-samsung-soc@vger.kernel.org
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

This config exists entirely to hide the cpufreq menu from the
kernel configuration unless a platform has selected it. Nothing
is actually built if this config is 'Y' and it just leads to more
patches that add a select under a platform Kconfig so that some
other CPUfreq option can be chosen. Let's remove the option so
that we can always enable CPUfreq drivers on ARM platforms.
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

memblock is now fully integrated into the kernel and is the prefered
method for tracking memory. Rather than reinvent the wheel with
meminfo, migrate to using memblock directly instead of meminfo as
an intermediate.
Acked-by: NJason Cooper <jason@lakedaemon.net>
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Tested-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Tested-by: NLeif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: NLaura Abbott <lauraa@codeaurora.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

This makes it possible to enable the Exynos platform as part of a
multiplatform kernel.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Instead of repeating the Kconfig entries for every SoC,
move them under ARCH_EXYNOS3, 4 and 5 and move the entries
common to 3, 4 and 5 under ARCH_EXYNOS.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

asm-generic offers an atomic-add based rwsem implementation, which
can avoid the need for heavier, spinlock-based synchronisation on the
fast path.

This patch makes use of the optimised implementation for ARM CPUs.
Signed-off-by: NWill Deacon <will.deacon@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Move the L2C-310 errata configuration options to arch/arm/mm/Kconfig
along side the option which enables support for this device.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

When targetting ARCH_MULTIPLATFORM, we may include support for SoCs with
PCI-capable devices (e.g. mach-virt with virtio-pci).

This patch allows PCI support to be selected for these SoCs by selecting
CONFIG_MIGHT_HAVE_PCI when CONFIG_ARCH_MULTIPLATFORM=y and removes the
individual selections from multi-platform enabled SoCs.
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NWill Deacon <will.deacon@arm.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

The AXM55xx family consists of devices that may contain up to 16 ARM Cortex-A15
cores (in a 4x4 cluster configuration). The cores within each cluster share an
L2 cache, and the clusters are connected to each other via a CCN-504 cache
coherent interconnect.

This machine requires CONFIG_ARM_LPAE enabled as all peripherals are located
above 4GB in the memory map.
Signed-off-by: NAnders Berg <anders.berg@lsi.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

No need for a private allocator. The core code handles it
already. 

Allocate the non MSI irqs right at boot time via machine_desc->nr_irqs
and let the sparse core handle the MSI space.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Reviewed-by: NGrant Likely <grant.likely@linaro.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20140507154333.809210026@linutronix.deSigned-off-by: NThomas Gleixner <tglx@linutronix.de>

Instead of hardcoding the SYSRAM details for each SoC,
pass this information through device tree (DT) and make
the code SoC agnostic. Generic DT SRAM bindings are
used for achieving this.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NHeiko Stuebner <heiko@sntech.de>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

This patch selects COMMON_CLK_SAMSUNG for EXYNOS and S3C64XX SoC
and removes COMMON_CLK selection as COMMON_CLK_SAMSUNG selects it's dependency.

CC: Russell King <linux@arm.linux.org.uk>
Signed-off-by: NPankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: NTomasz Figa <t.figa@samsung.com>

This moves the <mach/gpio.h> header in the AT91 platform down
into the machine directory and removes the reliance on
MACH_NEED_GPIO_H from the AT91.

This does not move the platform to GENERIC_GPIO but localize
the remaining work to be done for this to the mach-at91
folder.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
[nicolas.ferre@atmel.com: adapt to newer kernel, add rsi-ews board]
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>

Some Marvell PJ4B CPUs also implement iWMMXt extensions. With a
proper check for iWMMXt coprocessors now in place, enable it by
default on PJ4B. While at it, also allow to manually select
the corresponding Kconfig option.
Signed-off-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: NKevin Hilman <khilman@linaro.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

In commit ddb902cc (ARM: centralize common multi-platform kconfig
options), CLKSRC_OF was removed from some platforms, but not added to
ARCH_MULTIPLATFORM. Fix this.
Reported-by: NLauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: NRob Herring <robh@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Enable hibernation for ARM architectures and provide ARM
architecture specific calls used during hibernation.

The swsusp hibernation framework depends on the
platform first having functional suspend/resume.

Then, in order to enable hibernation on a given platform, a
platform_hibernation_ops structure may need to be registered with
the system in order to save/restore any SoC-specific / cpu specific
state needing (re)init over a suspend-to-disk/resume-from-disk cycle.

For example:

     - "secure" SoCs that have different sets of control registers
       and/or different CR reg access patterns.

     - SoCs with L2 caches as the activation sequence there is
       SoC-dependent; a full off-on cycle for L2 is not done
       by the hibernation support code.

     - SoCs requiring steps on wakeup _before_ the "generic" parts
       done by cpu_suspend / cpu_resume can work correctly.

     - SoCs having persistent state which is maintained during suspend
       and resume, but will be lost during the power off cycle after
       suspend-to-disk.

This is a rebase/rework of Frank Hofmann's v5 hibernation patchset.
Acked-by: NRuss Dill <Russ.Dill@ti.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Signed-off-by: NSebastian Capella <sebastian.capella@linaro.org>
Acked-by: NPavel Machek <pavel@ucw.cz>
Reviewed-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
[fixed duplicate virt_to_pfn() definition --rmk]
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The A31 SoC has PL and PM banks and thus increase the default ARCH_NR_GPIO.
Signed-off-by: NBoris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

If the renamed symbol is defined lib/iomap.c implements ioport_map and
ioport_unmap and currently (nearly) all platforms define the port
accessor functions outb/inb and friend unconditionally.  So
HAS_IOPORT_MAP is the better name for this.

Consequently NO_IOPORT is renamed to NO_IOPORT_MAP.

The motivation for this change is to reintroduce a symbol HAS_IOPORT
that signals if outb/int et al are available.  I will address that at
least one merge window later though to keep surprises to a minimum and
catch new introductions of (HAS|NO)_IOPORT.

The changes in this commit were done using:

	$ git grep -l -E '(NO|HAS)_IOPORT' | xargs perl -p -i -e 's/\b((?:CONFIG_)?(?:NO|HAS)_IOPORT)\b/$1_MAP/'
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Moxart uses an FA526 CPU core, which is ARMv4 based, not ARMv4T.
Before moxart, we had no CONFIG_MULTI_V4 option, since no ARMv4 platform
was enabled for multiplatform. This now adds the missing option, which
will give us slightly more efficient code on pure moxart kernels,
because we can build a pure FA526 kernel now rather than a combined
FA526+ARM920T kernel that we used to.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Most of the Samsung platforms do not yet allow building with
DT at all, so we should select CONFIG_ATAGS for now in all
cases we also select CONFIG_SAMSUNG_ATAGS.

Found during randconfig testing.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>

The power domain code is only available when CONFIG_PM
is enabled, so we must not select that unconditionally for
s3c64xx. Changing it to 'select PM_GENERIC_DOMAINS if PM'
mirrors what we do on other platforms, and fixes a possible
randconfig build bug.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>

ARCH_RPC no longer supports other CPUs aside from StrongARM110,
so we can make the option implicitly selected by the platform
and no longer give the option of building a kernel without CPU
support.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>

The efm32 platform does not provide a zreladdr-y line its Makefile.boot,
so we always have to use CONFIG_AUTO_ZRELADDR in order to successfully
build and link a zImage.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Cc: Uwe Kleine-König <kernel@pengutronix.de>

Currently AUDITSYSCALL has a long list of architecture depencency:
       depends on AUDIT && (X86 || PARISC || PPC || S390 || IA64 || UML ||
		SPARC64 || SUPERH || (ARM && AEABI && !OABI_COMPAT) || ALPHA)
The purpose of this patch is to replace it with HAVE_ARCH_AUDITSYSCALL
for simplicity.
Signed-off-by: NAKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com> (arm)
Acked-by: Richard Guy Briggs <rgb@redhat.com> (audit)
Acked-by: Matt Turner <mattst88@gmail.com> (alpha)
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Signed-off-by: NEric Paris <eparis@redhat.com>

Using Rabin Vincent's ARM uprobes patches as a base, enable uprobes
support on ARM.

Caveats:

 - Thumb is not supported
Signed-off-by: NRabin Vincent <rabin@rab.in>
Signed-off-by: NDavid A. Long <dave.long@linaro.org>

Enable reserved memory initialization from device tree.
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: NGrant Likely <grant.likely@linaro.org>

Enable ARM_HAS_SG_CHAIN for all multiplatform targets, it makes sense
to enable on all "modern" platforms; downsides are limited for platforms
that don't need it.
Requested-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NOlof Johansson <olof@lixom.net>

With noMMU, CONFIG_PAGE_OFFSET was not being set correctly.  As there's
no MMU, PAGE_OFFSET should be equal to PHYS_OFFSET in all cases.  This
commit makes that explicit.

Since we do this, we don't need to mess around in asm/memory.h with
ifdefs to sort this out, so let's get rid of that, and there's no point
offering the "Memory split" option for noMMU as that's meaningless
there.

Fixes: b9b32bf7 ("ARM: use linker magic for vectors and vector stubs")
Cc: <stable@vger.kernel.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/xen/enlighten.c (and maybe others) use MMU-specific functions
like pte_mkspecial which are only available on MMU builds. So let XEN
depend on MMU.
Suggested-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: NStefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>

This adds the irqchip driver for Cirrus Logic CLPS711X series SoCs.
Signed-off-by: NAlexander Shiyan <shc_work@mail.ru>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Move the bcm2835 board file into the mach-bcm directory. This allows us
to get rid of the mach-bcm2835 directory with the associated Kconfig
and Makefile.
Signed-off-by: NMarkus Mayer <markus.mayer@linaro.org>
[swarren, adjust defconfig so ARCH_BCM2835 still gets enabled]
Signed-off-by: NStephen Warren <swarren@wwwdotorg.org>

CLKSRC_MMIO is needed on efm32 because the clocksource driver
(CLKSRC_EFM32) uses clocksource_mmio_init() and
clocksource_mmio_readl_up(). Since commit 09ca2757 (clocksource:
time-efm32: Select CLKSRC_MMIO) CLKSRC_EFM32 does the necessary select
itself and ARCH_EFM32 doesn't need to select it explicitly any more.
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>

CPU_ARM926T should be selected if no other CPU is. Put the ! in the
right place so this works.
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Tested-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com>
Fixes: 24e860fb ("ARM: multiplatform: always pick one CPU type")
Cc: stable@vger.kernel.org # v3.11+
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

Guests can use AMBA bus devices such as the PL011 uart, so enable the
AMBA bus for mach-virt.
Signed-off-by: NRob Herring <robh@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>

The mach code for mach-virt is no longer needed, so we can remove all of
mach-virt except the kconfig entry.
Signed-off-by: NRob Herring <robh@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: NMarc Zyngier <marc.zyngier@arm.com>

MULTI_V6 should default to V6K as it is more optimal than V6. Any
platform which is not V6K should select CPU_V6 which will enable the
less optimal code paths.
Signed-off-by: NRob Herring <robh@kernel.org>
Cc: Anton Vorontsov <anton@enomsg.org>
Acked-by: NShawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Jamie Iles <jamie@jamieiles.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>

Many V6 and V7 platforms have an L2x0 cache, so make
CONFIG_MIGHT_HAVE_CACHE_L2X0 visible for V6 and V7 multi-platform
builds.
Signed-off-by: NRob Herring <robh@kernel.org>
Acked-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>