Convert omap to use the new sched_clock() infrastructure for extending
32bit counters to full 64-bit nanoseconds.
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert iop platforms to use the new sched_clock() infrastructure for
extending 32bit counters to full 64-bit nanoseconds.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert u300 to use the new sched_clock() infrastructure for extending
32bit counters to full 64-bit nanoseconds.
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert tegra to use the new sched_clock() infrastructure for extending
32bit counters to full 64-bit nanoseconds.
Tested-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert sa1100 to use the new sched_clock() infrastructure for extending
32bit counters to full 64-bit nanoseconds.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert pxa to use the new sched_clock() infrastructure for extending
32bit counters to full 64-bit nanoseconds.
Tested-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert mmp to use the new sched_clock() infrastructure for extending
32bit counters to full 64-bit nanoseconds.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert ixp4xx to use the new sched_clock() infrastructure for
extending 32bit counters to full 64-bit nanoseconds.
Tested-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Provide common sched_clock() infrastructure for platforms to use to
create a 64-bit ns based sched_clock() implementation from a counter
running at a non-variable clock rate.
This implementation is based upon maintaining an epoch for the counter
and an epoch for the nanosecond time. When we desire a sched_clock()
time, we calculate the number of counter ticks since the last epoch
update, convert this to nanoseconds and add to the epoch nanoseconds.
We regularly refresh these epochs within the counter wrap interval.
We perform a similar calculation as above, and store the new epochs.
We read and write the epochs in such a way that sched_clock() can easily
(and locklessly) detect when an update is in progress, and repeat the
loading of these constants when they're known not to be stable. The
one caveat is that sched_clock() is not called in the middle of an
update. We achieve that by disabling IRQs.
Finally, if the clock rate is known at compile time, the counter to ns
conversion factors can be specified, allowing sched_clock() to be tightly
optimized. We ensure that these factors are correct by providing an
initialization function which performs a run-time check.
Acked-by: Peter Zijlstra <peterz@infradead.org>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Tested-by: Mikael Pettersson <mikpe@it.uu.se>
Tested-by: Eric Miao <eric.y.miao@gmail.com>
Tested-by: Olof Johansson <olof@lixom.net>
Tested-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds nanoEngine's PCI support.
Signed-off-by: Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* __fixup_smp_on_up has been modified with support for the
THUMB2_KERNEL case. For THUMB2_KERNEL only, fixups are split
into halfwords in case of misalignment, since we can't rely on
unaligned accesses working before turning the MMU on.
No attempt is made to optimise the aligned case, since the
number of fixups is typically small, and it seems best to keep
the code as simple as possible.
* Add a rotate in the fixup_smp code in order to support
CPU_BIG_ENDIAN, as suggested by Nicolas Pitre.
* Add an assembly-time sanity-check to ALT_UP() to ensure that
the content really is the right size (4 bytes).
(No check is done for ALT_SMP(). Possibly, this could be fixed
by splitting the two uses ot ALT_SMP() (ALT_SMP...SMP_UP versus
ALT_SMP...SMP_UP_B) into two macros. In the first case,
ALT_SMP needs to expand to >= 4 bytes, not == 4.)
* smp_mpidr.h (which implements ALT_SMP()/ALT_UP() manually due
to macro limitations) has not been modified: the affected
instruction (mov) has no 16-bit encoding, so the correct
instruction size is satisfied in this case.
* A "mode" parameter has been added to smp_dmb:
smp_dmb arm @ assumes 4-byte instructions (for ARM code, e.g. kuser)
smp_dmb @ uses W() to ensure 4-byte instructions for ALT_SMP()
This avoids assembly failures due to use of W() inside smp_dmb,
when assembling pure-ARM code in the vectors page.
There might be a better way to achieve this.
* Kconfig: make SMP_ON_UP depend on
(!THUMB2_KERNEL || !BIG_ENDIAN) i.e., THUMB2_KERNEL is now
supported, but only if !BIG_ENDIAN (The fixup code for Thumb-2
currently assumes little-endian order.)
Tested using a single generic realview kernel on:
ARM RealView PB-A8 (CONFIG_THUMB2_KERNEL={n,y})
ARM RealView PBX-A9 (SMP)
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
iwmmxt is used in XScale, XScale3, Mohawk and PJ4 core. But the instructions
of accessing CP0 and CP1 is changed in PJ4. Append more files to support
iwmmxt in PJ4 core.
Signed-off-by: Zhou Zhu <zzhu3@marvell.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Because the nwfpe support is unlikely to be used on new platforms
and requires CONFIG_OABI_COMPAT, which is not generally used with
ARMv7+, we shouldn't expect to build nwfpe support into a Thumb-2
kernel.
At present, nwfpe contains assembly code which isn't Thumb-2
compatible, and for now it doesn't appear useful to port this
code.
All ARMv7-A/R platforms necessarily have VFPv3 hardware floating-
point natively, making emulation unnecessary.
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This makes sense, because Thumb-2 code can't execute on plain
ARMv6 processors.
This will avoid accidentally configuring a broken kernel where the
config otherwise would allow multiple architecture versions to
coexist in the same kernel.
Not adding !CPU_V5 etc., because the chance of anyone trying to
put v5 and v7 in the same kernel is low, and I'm not aware of
any mach which can do this. These could be added later if it
matters.
Note that the rules may need to be refined if support for the
ARM1156J(F)-S processor is later added to the kernel, since this
processor supports the rare ARMv6T2 extensions, which add support
for Thumb-2 and a few other ARMv7 features.
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
It is kernel-wide policy that options depending on EXPERIMENTAL should
also have '(EXPERIMENTAL)' in their option text, and options with
'(EXPERIMENTAL)' depend on EXPERIMENTAL.
Ensure that all ARM options comply with this.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Today more boards with arm cpu have selectable pci bus.
This patch makes this more scalable and remove line continuations in
Kconfig
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Depending on the compiler version, ARM GCC calls the mcount function
either __gnu_mcount_nc or mcount.
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Currently, the kprobes implementation for ARM only supports the ARM
instruction set, so it only works if CONFIG_THUMB2_KERNEL is not
enabled.
Until kprobes is updated to work with Thumb-2, turning it on will
cause horrible things to happen, so this patch disables it for now.
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add CONFIG_CRASH_DUMP configuration option which is used by dump
capture kernels.
Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
factorise some generic infrastructure to assist looking up struct clks
for the ARM & SH architecture.
as the code is identical at 99%
put the arch specific code for allocation as example in asm/clkdev.h
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This just adds ARCH_MSM_SCORPIONMP to allow SMP selection for
MSM. MSM is unique in that it doesn't enable SCU or TWD.
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
Add the options to enable the function graph tracer on ARM. Function
graph tracer support requires frame pointers, so exclude Thumb-2 and
also make sure FRAME_POINTER gets enabled when FUNCTION_GRAPH_TRACER is
used, since FUNCTION_TRACER doesn't "select FRAME_POINTER" when
ARM_UNWIND is used. Therefore, with GCC 4.4.0+, you get plain function
tracing without frame pointers, but you'll need them if you want
function graph tracing.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Presently each one of the CPUs manually selects the same feature set, and
there's a reasonable expectation that none of these will change for
future CPUs in the SH-Mobile / R-Mobile family, so we move those over to
the top-level ARCH_SHMOBILE.
While we're at it, all of the CPUs support optional GPIOs via the PFC,
do not have I/O ports, and expect sparse IRQ, so we bring the
configuration in line across the board.
This more or less brings the ARM-based parts in sync with their SH
counterparts.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The old apcs-gnu ABI doesn't guarantee that double words are allocated
to registers with even alignment, causing the 64-bit exclusive memory
operations to be rejected by the assembler.
This patch requires that CONFIG_AEABI is set in order to use the native
atomic operations and falls back to the generic (spinlock) code otherwise.
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (215 commits)
ARM: memblock: setup lowmem mappings using memblock
ARM: memblock: move meminfo into find_limits directly
ARM: memblock: convert free_highpages() to use memblock
ARM: move freeing of highmem pages out of mem_init()
ARM: memblock: convert memory detail printing to use memblock
ARM: memblock: use memblock to free memory into arm_bootmem_init()
ARM: memblock: use memblock when initializing memory allocators
ARM: ensure membank array is always sorted
ARM: 6466/1: implement flush_icache_all for the rest of the CPUs
ARM: 6464/2: fix spinlock recursion in adjust_pte()
ARM: fix memblock breakage
ARM: 6465/1: Fix data abort accessing proc_info from __lookup_processor_type
ARM: 6460/1: ixp2000: fix type of ixp2000_timer_interrupt
ARM: 6449/1: Fix for compiler warning of uninitialized variable.
ARM: 6445/1: fixup TCM memory types
ARM: imx: Add wake functionality to GPIO
ARM: mx5: Add gpio-keys to mx51 babbage board
ARM: imx: Add gpio-keys to plat-mxc
mx31_3ds: Fix spi registration
mx31_3ds: Fix the logic for detecting the debug board
...
* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: (38 commits)
kbuild: convert `arch/tile' to the kconfig mainmenu upgrade
README: cite nconfig
Revert "kconfig: Temporarily disable dependency warnings"
kconfig: Use PATH_MAX instead of 128 for path buffer sizes.
kconfig: Fix realloc usage()
kconfig: Propagate const
kconfig: Don't go out from read config loop when you read new symbol
kconfig: fix menuconfig on debian lenny
kbuild: migrate all arch to the kconfig mainmenu upgrade
kconfig: expand file names
kconfig: use the file's name of sourced file
kconfig: constify file name
kconfig: don't emit warning upon rootmenu's prompt redefinition
kconfig: replace KERNELVERSION usage by the mainmenu's prompt
kconfig: delay gconf window initialization
kconfig: expand by default the rootmenu's prompt
kconfig: add a symbol string expansion helper
kconfig: regen parser
kconfig: implement the `mainmenu' directive
kconfig: allow PACKAGE to be defined on the compiler's command-line
...
Fix up trivial conflict in arch/mn10300/Kconfig
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (163 commits)
omap: complete removal of machine_desc.io_pg_offst and .phys_io
omap: UART: fix wakeup registers for OMAP24xx UART2
omap: Fix spotty MMC voltages
ASoC: OMAP4: MCPDM: Remove unnecessary include of plat/control.h
serial: omap-serial: fix signess error
OMAP3: DMA: Errata i541: sDMA FIFO draining does not finish
omap: dma: Fix buffering disable bit setting for omap24xx
omap: serial: Fix the boot-up crash/reboot without CONFIG_PM
OMAP3: PM: fix scratchpad memory accesses for off-mode
omap4: pandaboard: enable the ehci port on pandaboard
omap4: pandaboard: Fix the init if CONFIG_MMC_OMAP_HS is not set
omap4: pandaboard: remove unused hsmmc definition
OMAP: McBSP: Remove null omap44xx ops comment
OMAP: McBSP: Swap CLKS source definition
OMAP: McBSP: Fix CLKR and FSR signal muxing
OMAP2+: clock: reduce the amount of standard debugging while disabling unused clocks
OMAP: control: move plat-omap/control.h to mach-omap2/control.h
OMAP: split plat-omap/common.c
OMAP: McBSP: implement functional clock switching via clock framework
OMAP: McBSP: implement McBSP CLKR and FSR signal muxing via mach-omap2/mcbsp.c
...
Fixed up trivial conflicts in arch/arm/mach-omap2/
{board-zoom-peripherals.c,devices.c} as per Tony
This patch adds ARCH_HAS_CPUFREQ in arch/arm/Kconfig for S5PV210,
and updates mach-s5pv210/Makefile for supporting build CPUFREQ driver.
Signed-off-by: Jaecheol Lee <jc.lee@samsung.com>
Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
S5PV310 and S5PC210 support more I2C devices than previous SoCs.
Add the device support code for them.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Currently, only two operating points: 160Mhz and 800Mhz.
the operating points are tested on babbage 3.0
Signed-off-by: Yong Shen <yong.shen@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Implement cpufreq support for the Tegra SOC. DVFS is handled by the
core virtual cpu clock. The frequencies of the two cores are tied
together, the highest frequency requested by either core determines
the actual frequency.
Signed-off-by: Colin Cross <ccross@android.com>
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (278 commits)
arm: remove machine_desc.io_pg_offst and .phys_io
arm: use addruart macro to establish debug mappings
arm: return both physical and virtual addresses from addruart
arm/debug: consolidate addruart macros for CONFIG_DEBUG_ICEDCC
ARM: make struct machine_desc definition coherent with its comment
eukrea_mbimxsd-baseboard: Pass the correct GPIO to gpio_free
cpuimx27: fix compile when ULPI is selected
mach-pcm037_eet: fix compile errors
Fixing ethernet driver compilation error for i.MX31 ADS board
cpuimx51: update board support
mx5: add cpuimx51sd module and its baseboard
iomux-mx51: fix GPIO_1_xx 's IOMUX configuration
imx-esdhc: update devices registration
mx51: add resources for SD/MMC on i.MX51
iomux-mx51: fix SD1 and SD2's iomux configuration
clock-mx51: rename CLOCK1 to CLOCK_CCGR for better readability
clock-mx51: factorize clk_set_parent and clk_get_rate
eukrea_mbimxsd: add support for DVI displays
cpuimx25 & cpuimx35: fix OTG port registration in host mode
i.MX31 and i.MX35 : fix errate TLSbo65953 and ENGcm09472
...
In case of S5PV310/S5PC210, it uses the SPARSEMEM as default memory
configuration. So moved to ARCH_S5PV310 config.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: edited title]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
In case of S5PV210/S5PC110, it uses the SPARSEMEM as default memory
configuration. So moved to ARCH_S5PV210 config.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: edited title]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch adds support Watchdog Timer for S5PV310 and S5PC210.
Signed-off-by: Jemings Ko <jemings@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch adds support RTC for S5PV310 and S5PC210.
Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Jemings Ko <jemings@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Provide a mechanism that allows running code in IRQ context. It is
most useful for NMI code that needs to interact with the rest of the
system -- like wakeup a task to drain buffers.
Perf currently has such a mechanism, so extract that and provide it as
a generic feature, independent of perf so that others may also
benefit.
The IRQ context callback is generated through self-IPIs where
possible, or on architectures like powerpc the decrementer (the
built-in timer facility) is set to generate an interrupt immediately.
Architectures that don't have anything like this get to do with a
callback from the timer tick. These architectures can call
irq_work_run() at the tail of any IRQ handlers that might enqueue such
work (like the perf IRQ handler) to avoid undue latencies in
processing the work.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Kyle McMartin <kyle@mcmartin.ca>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
[ various fixes ]
Signed-off-by: Huang Ying <ying.huang@intel.com>
LKML-Reference: <1287036094.7768.291.camel@yhuang-dev>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The patch below updates broken web addresses in the arch directory.
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Finn Thain <fthain@telegraphics.com.au>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Reviewed-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch updates the Kconfig and Makefile for the S5P6440 and S5P6450
machines. It also updates arch/arm/ Kconfig and Makefile to include for
support ARCH_S5P64X0 with one kernel image.
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
In order for CPUidle to work on SMP systems, an implementation of
cpu_idle_wait() is needed.
This patch duplicates the x86 implementation of cpu_idle_wait() for
ARM.
Tested-by: Colin Cross <ccross@android.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Do this by adding flush_icache_all to cache_fns for ARMv6 and 7.
As flush_icache_all may neeed to be called from flush_kern_cache_all,
add it as the first entry in the cache_fns.
Note that now we can remove the ARM_ERRATA_411920 dependency
to !SMP so it can be selected on UP ARMv6 processors, such
as omap2.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
UP systems do not implement all the instructions that SMP systems have,
so in order to boot a SMP kernel on a UP system, we need to rewrite
parts of the kernel.
Do this using an 'alternatives' scheme, where the kernel code and data
is modified prior to initialization to replace the SMP instructions,
thereby rendering the problematical code ineffectual. We use the linker
to generate a list of 32-bit word locations and their replacement values,
and run through these replacements when we detect a UP system.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
All platforms which currently support SMP also support the ARM SCU
and ARM TWD blocks, so it's pointless to make these config symbols
conditional on the platform symbols which SMP is already conditional
on.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
On the r2p0, r2p1 and r2p2 versions of the Cortex-A9, data corruption
can occur under very rare conditions due to a store buffer optimisation.
This workaround sets a bit in the diagnostic register of the Cortex-A9,
disabling the optimisation and preventing the problem from occurring.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
update OMAP Kconfig help texts for all supported SoC models
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
5cfc8ee0bb (ARM: convert arm to arch_gettimeoffset()) marked all of
at91 AND at91x40 as needing ARCH_USES_GETTIMEOFFSET, and hence no high
res timer support / accurate clock_gettime() - But only at91x40 needs it.
Cc: stable@kernel.org
Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com>
Acked-by: John Stultz <johnstul@us.ibm.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch introduces support for the tcc platform by creating an
arch/arm/plat-tcc and arch/arm/mach-tcc8k directories and adding
basic include files plus Kconfig and Makefile.
Signed-off-by: "Hans J. Koch" <hjk@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
On the r2p0, r2p1 and r2p2 versions of the Cortex-A9, data corruption
can occur if a shared cache line is replaced on one CPU as another CPU
is accessing it.
This workaround sets two bits in the diagnostic register of the Cortex-A9,
reducing the linefill issuing capabilities of the processor and
avoiding the erroneous behaviour.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
On versions of the Cortex-A9 up to and including r2p2, under rare
circumstances, a DMB instruction between 2 write operations may not
ensure the correct visibility ordering of the 2 writes.
This workaround sets a bit in the diagnostic register of the Cortex-A9,
causing the DMB instruction to behave like a DSB, which functions
correctly on the affected cores.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Partially revert e69edc7, which introduced automatic zreladdr
support. The change in the way the manual definition is defined
seems to be error and conflict prone. Go back to the original way
we were handling this for the time being, while keeping the automatic
zreladdr facility.
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
If we're targetting a v6 or v7 core and have at least software perf events
available, then automatically add support for hardware breakpoints.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: S. Karthikeyan <informkarthik@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Dynamic ftrace for ARM has been disabled since 07c4cc1cda ("ftrace:
disable dynamic ftrace for all archs that use daemon"). Now that the
code has been updated, re-enable it.
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
fixes the warning:
.config:369:warning: symbol value '' invalid for ZRELADDR
and the prompt for ZRELADDR on make
Signed-off-by: Erik Gilling <konkers@android.com>
On versions of the Cortex-A9 prior to r2p0, performing TLB invalidations by
ASID match can result in the incorrect ASID being broadcast to other CPUs.
As a consequence of this, the targetted TLB entries are not invalidated
across the system.
This workaround changes the TLB flushing routines to invalidate entries
regardless of the ASID.
Cc: <stable@kernel.org>
Tested-by: Rob Clark <rob@ti.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'timers-timekeeping-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
um: Fix read_persistent_clock fallout
kgdb: Do not access xtime directly
powerpc: Clean up obsolete code relating to decrementer and timebase
powerpc: Rework VDSO gettimeofday to prevent time going backwards
clocksource: Add __clocksource_updatefreq_hz/khz methods
x86: Convert common clocksources to use clocksource_register_hz/khz
timekeeping: Make xtime and wall_to_monotonic static
hrtimer: Cleanup direct access to wall_to_monotonic
um: Convert to use read_persistent_clock
timkeeping: Fix update_vsyscall to provide wall_to_monotonic offset
powerpc: Cleanup xtime usage
powerpc: Simplify update_vsyscall
time: Kill off CONFIG_GENERIC_TIME
time: Implement timespec_add
x86: Fix vtime/file timestamp inconsistencies
Trivial conflicts in Documentation/feature-removal-schedule.txt
Much less trivial conflicts in arch/powerpc/kernel/time.c resolved as
per Thomas' earlier merge commit 47916be4e2 ("Merge branch
'powerpc.cherry-picks' into timers/clocksource")
This patch moves the dependency of watchdog timer driver from MACH_XXX(board)
to ARCH_XXX(SoC). This will enable all machines using Samsung S3C64XX and S5P
SoCs to use the WDT driver by default.
Signed-off-by: Banajit Goswami <banajit.g@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Conflicts:
arch/arm/Kconfig
arch/arm/mach-s3c64xx/Kconfig
arch/arm/mach-s5p6442/Kconfig
arch/arm/mach-s5pc100/Kconfig
v2: fixes from Russell King:
- include linux/io.h instead of asm/io.h
- fix whitespace in Kconfig
- Use spin_lock_init to initialize lock
- Return -ENOSYS instead of BUG for unimplemented clock ops
- Use proper return values in tegra2 clock ops
additional changes:
- Rename some clocks to match dev_ids
- add rate propagation
- add debugfs entries
- add support for clock listed in clk_lookup under multiple dev_ids
v3:
- Replace per-clock locking with global clock lock
- Autodetect clock state on init
- Let clock dividers pick next lower possible frequency
- Add support for clock init tables
- Minor bug fixes
- Fix checkpatch issues
Signed-off-by: Colin Cross <ccross@android.com>
v2: Fixes from Mike Rapoport
- remove unused header files (mach/dma.h and mach/nand.h)
- remove tegra 1 references from Makefile.boot
v2: fixes from Russell King
- remove mach/io.h include from mach/iomap.h
- fix whitespace in Kconfig
v2: from Colin Cross
- fix invalid immediate in debug-macro.S
v3:
- allow selection of multiple boards
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
This patch adds HAVE_S3C2410_I2C to control inclusion of I2C bus driver
on Samsung SoCs and makes I2C bus driver dependency SoC specific instead
of machine specific. This will enalbe all machines using Samsung ARCH_S3C2410,
_S3C64XX, _S5P6440, _S5PC100, and _S5PV210 to select the I2C driver by default
Signed-off-by: Naveen Krishna Ch <ch.naveen@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
This patch moves the dependency of RTC driver from MACH_XXX(board) to
ARCH_XXX(SoC). This will enable all machines using Samsung S5P6440, S5PC100
and S5PV210 SoCs to use RTC driver by default.
Signed-off-by: Atul Dahiya <atul.dahiya@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch adds the Kconfig and Makefile for the new S5PV310 SoC.
It also updates arch/arm Kconfig, Makefile and arch/arm/mm/Kconfig
to include support for the new S5PV310.
Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Introduce SHMOBILE_TIMER_HZ for SH-Mobile.
Allow users to select HZ on their system to
minimize potential timer drift. Use 128 Hz as
default to work well with the 32768 Hz RCLK.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add LPC32XX support in arch/arm/Kconfig and arch/arm/Makefile
Signed-off-by: Kevin Wells <wellsk40@gmail.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Now that all arches have been converted over to use generic time via
clocksources or arch_gettimeoffset(), we can remove the GENERIC_TIME
config option and simplify the generic code.
Signed-off-by: John Stultz <johnstul@us.ibm.com>
LKML-Reference: <1279068988-21864-4-git-send-email-johnstul@us.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The TWD local timers are unable to wake up the CPU when it is placed
into a low power mode, eg. C3. Therefore, we need to adapt things
such that the TWD code can cope with this.
We do this by always providing a broadcast tick function, and marking
the fact that the TWD local timer will stop in low power modes. This
means that when the CPU is placed into a low power mode, the core
timer code marks this fact, and allows an IPI to be given to the core.
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
SPARSE_IRQ doesn't need to be a visible option, only those platforms
supporting that will select it.
Signed-off-by: Eric Miao <eric.miao@canonical.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Everything should now be using sparsemem rather than discontigmem, so
remove the code supporting discontigmem from ARM.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
As long as the zImage is placed within the 128MB range from the start of
memory, ZRELADDR (Address where the decompressed kernel will be placed,
usually == PHYS_OFFSET + TEXT_OFFSET) can be determined at run-time by
masking PC with 0xf80000000.
Running through all the Makefile.boot, all those zreladdr-y
addresses == 0x[0-f][08]00_0000 + TEXT_OFFSET can be determined at
run-time.
Option CONFIG_AUTO_ZRELADDR and CONFIG_ZRELADDR are introduced,
CONFIG_ZRELADDR _must_ be explicitly specified if:
- ((zreladdr-y - TEXT_OFFSET) & ~0xf8000000) != 0, which means
masking PC with 0xf8000000 will result in an incorrect address.
Currently this is only a problem on u300.
- or the assumption of the zImage being loaded by the bootloader within
the first 128MB of RAM is incorrect
- or when ZBOOT_ROM is used, where the above assumption is usually wrong.
[ukleinek: changed mask from 0xf0000000 to 0xf8000000 for mx1 and shark
+ some review fixes from the mailing list]
Original-Idea-and-Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Eric Miao <eric.miao@canonical.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Allow SH-Mobile ARM users to adjust FORCE_MAX_ZONEORDER.
The Kconfig entry is taken from SH and non-4K page size
stuff has been trimmed away. For now only SH-Mobile ARM is
allowed to change this variable, SA1111 configs are kept at
"9" and the rest at "11".
CONFIG_FORCE_MAX_ZONEORDER lets the user tweak the maximum
amount of physically contiguous memory that can be allocated
by the kernel.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch enables the HAVE_REGS_AND_STACK_ACCESS_API option
for ARM which is required by the kprobe events tracer. Code based
on the PowerPC port.
Cc: Jean Pihet <jpihet@mvista.com>
Tested-by: Jamie Iles <jamie.iles@picochip.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
So to allow NR_IRQS to be dynamic and platforms to specify the number
of IRQs really needed.
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds support for the Cortex-A9 local timers available when
using the CA9X4 daughterboard with the Versatile Express.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This was deprecated in 2001 and announced to live on for 5 years.
For now provide a kernel parameter for those who still need it.
Acked-by: Eric Miao <eric.miao@canonical.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
CPU performance event counters on v7 cores will only operate
if either the NIDEN or DBGEN signals are driven high.
For the OMAP3 platform, these signals are driven low by default
but DBGEN can be asserted by selecting the OMAP3_EMU Kconfig option,
which enables the virtual clock for hardware debugging peripherals.
Acked-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This hasn't been actively maintained for a long time, only receiving
the occasional build update when things break. I doubt anyone has
one of these on their desks anymore.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
[dwalker@codeaurora.org: renamed to trout, checkpatch cleanup]
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
This is the very basic stuff without the changing canary upon
task switch yet. Just the Kconfig option and a constant canary
value initialized at boot time.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
This patch adds PCIe support for CNS3xxx-based boards. The support
was tested with a directly attached SKY2 NIC, and EHCI USB controller
behind the PLX PEX8112 P2P bridge (to make sure that type1 cfg cycles
work as expected).
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Add an option to force usage of the in-kernel cmdline even if the boot
loader passes another command string to the kernel.
Useful if someone cannot or don't want to change the
command-line options of the boot loader but is able to change
the kernel.
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fixup commit 5cfc8ee0bb which
introduced ARCH_USES_GETTIMEOFFSET but missed out several
S5P architectures.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This patch moves S5PC100 SoC support to plat-s5p framework. Most
periperal support code has been already moved from plat-s5pc1xx to
mach-s5pc100.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
* 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci: (48 commits)
Revert "rtc: omap: let device wakeup capability be configured from chip init logic"
DM365: Added more PINMUX configurations for AEMIF
DM365: Make CLKOUTx available
DM365: Added PINMUX definitions for GPIO30..32
Davinci: iotable based ioremap() interception
Davinci: pinmux - use ioremap()
Davinci: aintc/cpintc - use ioremap()
Davinci: psc - use ioremap()
Davinci: timer - use ioremap()
Davinci: jtag_id - use ioremap()
Davinci: da8xx: rtc - use ioremap
Davinci: gpio - use ioremap()
davinci: edma: fix coding style issue related to breaking lines
davinci: edma: use BIT() wherever possible
davinci: edma: fix coding style issue related to usage of braces
davinci: edma: use a more intuitive name for edma_info
Davinci: serial - conditional reset via pwremu
Davinci: serial - use ioremap()
Davinci: serial - remove unnecessary define
Davinci: watchdog reset separation across socs
...
Fix up trivial conflict in arch/arm/Kconfig due to removal of "select
GENERIC_TIME"
The ARCH_REQUIRE_GPIOLIB config option will select GPIOLIB which
in turn will select GENERIC_GPIO. Because of this, there is no
reason to do the select GENERIC_GPIO in arch/arm/Kconfig for the
architectures that have ARCH_REQUIRE_GPIOLIB.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Enable hardware perf-events if CPU_HAS_PMU and select
HAVE_OPROFILE if HAVE_PERF_EVENTS. If no hardware support
is present, OProfile will fall back to timer mode.
This patch also removes the old OProfile drivers in favour
of the code implemented by perf.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add arch/arm/mach-s3c2416 for support of the Samsung S3C2416 SoC.
This patch adds support of the S3C2416 SoC, clocks, timers,
and initial IRQ support (without support of secondary set of registers).
Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
[ben-linux@fluff.org: removed files to be reworked, fixed conflicts]
[ben-linux@fluff.org: use s3c2443 reset instead of specific reset code]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Preliminary modification prior to adding support for TNETV107X based on
ARM1176. This change allows for CPUs other than ARM926T to be used for Davinci
derivative SoCs. Existing devices (DA8x and DMx) operate unchanged.
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
ARCH_MSM supports armv7 cpus, so we're pushed the CPU_V6/CPU_V7 selection
down into the arch/arm/mach-msm/Kconfig.
Also update the description to be a bit more accurate.
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
This patch adds very basic support for ECONA CNS3xxx ARM11 MPcore
(ARMv6) dual-core processors.
Note that SMP is not yet supported, as well as many peripheral
devices. Support for these features will be added later.
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
The only difference between ICST307 and ICST525 are the two arrays
for calculating the S parameter; the code is now identical. Merge
the two files and kill the duplicated code.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The switch to using GPIOLIB broke the sd/mmc card detection on the
RealView development boards if GPIO_PL061 was not selected.
This patch selects GPIO_PL061 if GPIOLIB is selected.
The sense of the return value from mmc_status has also changed
and is corrected.
Signed-off-by: Colin Tuckley <colin.tuckley@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds support for PCI domains on ARM platforms.
Also, protect asm/mach/pci.h from multiple inclustions, otherwise
build fails because of pci_domain_nr() and pci_proc_domain()
redefinitions.
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch allows using a kernel image compressed with LZMA on ARM.
Extracting the image is fairly slow, but it might be useful on machines
with a very limited amount of storage, as the size benefit is quite
significant (about 25% smaller with LZMA compared to GZIP)
Tested-by: Martin Michlmayr <tbm@cyrius.com>
Tested-by: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert arm to use GENERIC_TIME via the arch_getoffset() infrastructure,
reducing the amount of arch specific code we need to maintain.
The arm architecture is the last arch that need to be converted.
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Add support for the GPIOs on the U8500, using the plat-nomadik GPIO
driver.
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (370 commits)
ARM: S3C2443: Add set_rate and round_rate calls for armdiv clock
ARM: S3C2443: Remove #if 0 for clk_mpll
ARM: S3C2443: Update notes on MPLLREF clock
ARM: S3C2443: Further clksrc-clk conversions
ARM: S3C2443: Change to using plat-samsung clksrc-clk implementation
USB: Fix s3c-hsotg build following Samsung platform header moves
ARM: S3C64XX: Reintroduce unconditional build of audio device
ARM: 5961/1: ux500: fix CLKRST addresses
ARM: 5977/1: arm: Enable backtrace printing on oops when PC is corrupted
ASoC: Fix S3C64xx IIS driver for Samsung header reorg
ARM: S3C2440: Fix plat-s3c24xx move of s3c2440/s3c2442 support
[ARM] pxa: fix typo in mxm8x10.h
[ARM] pxa/raumfeld: set GPIO drive bits for LED pins
[ARM] pxa/zeus: Add support for mcp2515 CAN bus
[ARM] pxa/zeus: Add support for onboard max6369 watchdog
[ARM] pxa/zeus: Add Eurotech as the manufacturer
[ARM] pxa/zeus: Correct the USB host initialisation flags
[ARM] pxa/zeus: Allow usage of 8250-compatible UART in uncompress
[ARM] pxa: refactor uncompress.h for non-PXA uarts
[ARM] mmp2: fix incorrect calling of chip->mask_ack() for 2nd level cascaded IRQs
...
Marvell MMP2 (aka ARMADA610) is a SoC based on PJ4 core. It's
ARMv6 compatible. Support basic interrupt handler and timer,
and basic support for MMP2 based FLINT platform.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Updates arch/arm Kconfig and Makefile for building the S5PV210 support.
Also modifies the plat-s5p Kconfig file to include the support for plat-s5p
for S5PV210.
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Add ARM_L1_CACHE_SHIFT_6 to arch/arm/Kconfig to allow CPUs with
L1 cache lines which are 64bytes to indicate this without having to
alter the arch/arm/mm/Kconfig entry each time.
Update the mm Kconfig so that ARM_L1_CACHE_SHIFT default value
uses this and change OMAP3 and S5PC1XX to select ARM_L1_CACHE_SHIFT_6.
Acked-by: Ben Dooks <ben-linux@fluff.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This is broken since at least one year when
ec996ba (mxc timer: make compile time independent)
removed the symbol MXC_TCN.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Updates arch/arm Kconfig and Makefile for building the S5P6442 support.
Also modifies the plat-s5p Kconfig file to include the support for plat-s5p
for S5P6442.
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Move the Kconfig entries from plat-s3c to plat-samsung and plat-s3c24xx
as necessary. The S3C_BOOT entries and the DMA configuration can go to
plat-samsung. The low-level UART configurations are currently S3C2XX
specific and can go to plat-s3c24xx.
Eliminating plat-s3c from the build process will be submitted seperately.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Remove the Kconfig and PLAT_S3C64XX defines for the previous S3C64XX
directory structure now that the code is moved into mach-s3c64xx.
Note, we cannot currently remove plat-s3c64xx directory as we have a
pair of include files used within plat-s3c and plat-samsung that need
to find a new home.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This patch implements the work-around for the errata 588369.The secure
API is used to alter L2 debug register because of trust-zone.
This version updated with comments from Russell and Catalin and
generated against 2.6.33-rc6 mainline kernel. Detail
comments can be found:
http://www.spinics.net/lists/linux-omap/msg23431.html
Signed-off-by: Woodruff Richard <r-woodruff2@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
In preparation for perf-events support, ARM needs to support atomic64_t
operations. v6k and above support the ldrexd and strexd instructions to
do just that.
This patch adds atomic64 support to the ARM architecture. v6k and above
make use of new instructions whilst older cores fall back on the generic
solution using spinlocks. If and when v7-M cores are supported by Linux,
they will need to fall back on the spinlock implementation too.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Always creating this directory avoids other users having to jump
through silly hoops when they want to share this directory.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Adds the Performance Events support for ARMv7 processor, using
the PMNC unit in HW.
Supports the following:
- Cortex-A8 and Cortex-A9 processors,
- dynamic detection of the number of available counters,
based on the PMCR value,
- runtime detection of the CPU arch (v6 or v7)
and model (Cortex-A8 or Cortex-A9)
Tested on OMAP3 (Cortex-A8) only.
Signed-off-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch implements support for ARMv6 performance counters in the
Linux performance events subsystem. ARMv6 architectures that have the
performance counters should enable HW_PERF_EVENTS to get hardware
performance events support in addition to the software events.
Note: only ARM Ltd ARM cores are supported.
This implementation also provides an ARM PMU abstraction layer to allow
ARMv7 and others to be supported in the future by adding new a
'struct arm_pmu'.
Cc: Jean Pihet <jpihet@mvista.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jamie Iles <jamie.iles@picochip.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The perf events subsystem allows counting of both hardware and
software events. This patch implements the bare minimum for software
performance events.
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jamie Iles <jamie.iles@picochip.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
To add support for perf events and to allow the hardware counters to be
shared with oprofile, we need a way to reserve access to the pmu
(performance monitor unit). Platforms with PMU interrupts should
register the interrupts in arch/arm/kernel/pmu.c
Signed-off-by: Jamie Iles <jamie.iles@picochip.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This adds preliminary support for the SH-Mobile G-series.
The SH-Mobile G-series is a series of ARM/SH multi-core CPUs that aside
from the ARM MPU are primarily composed of existing SH IP blocks.
This includes initial support for the SH7367 (SH-Mobile G3) CPU and
the G3EVM reference board.
Only timer, serial console, and NOR flash are supported at this point.
Patches for the interrupt controller, pinmux support, clock framework
and runtime pm will be submitted as feature patches on top of this.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
OMAP platforms(like OMAP3530) include DSP or other co-processors
for media acceleration. when carving out memory for the
accelerators we can end up creating a hole in the memory map
of sort:
<kernel memory><hole(memory for accelerator)><kernel memory>
To handle such a memory configuration ARCH_HAS_HOLES_MEMORYMODEL
has to be enabled. For further information refer discussion at:
http://www.mail-archive.com/linux-omap@vger.kernel.org/msg15262.html.
Signed-off-by: Sriramakrishnan <srk@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Remove the old mach-s3c2442 directory now all is merged into mach-s3c2440
and remove it from the arch/arm build process.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
The previous nuc932 support patches have been discarded by me and because it belongs to
another SoCs series named nuc93x,at present, which included nuc931 and nuc932, I think it is
better to create a new mach-nuc93x,So I made the patch,and request your advice.Thanks!
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
As per discussions with Russell King on linux-arm-kernel, it appears that
both mach-s3c6400 and mach-s3c6410 are so close together that they should
simply be merged into mach-s3c64xx.
Note, this patch does not eliminate any of the bits that are still common,
it is simply a move of the two directories together, any further common
code will be eliminated or moved in further patches.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This patch adds the Kconfig and Makefile for the new S5P6440 machine
and platform directories. It also updates arch/arm Kconfig and Makefiles
to include the support for the new S5P6440 CPU.
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
- changes to ach/arch/boot/Makefile to make it easier to add new
compression types
- new piggy.lzo.S necessary for lzo compression
- changes in arch/arm/boot/compressed/misc.c to allow the use of lzo or
gzip, depending on the config
- Kconfig support
Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Tested-by: Wu Zhangjin <wuzhangjin@gmail.com>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Russell King <rmk@arm.linux.org.uk>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
All DaVinci platforms include a DSP or co-processor for
audio/video acceleration.
While creating memory for the DSP/co-processor, system
integrator can end up creating a hole in the memory map
of the sort:
<kernel memory> <hole (memory for DSP)> <kernel memory>
This sort of configuration needs ARCH_HAS_HOLES_MEMORYMODEL
enabled. See further details see this discussion on ARM
linux mailing list:
http://www.mail-archive.com/linux-omap@vger.kernel.org/msg15262.html
The patch is boot tested on OMAP-L138, DM6446 and DM355 EVMs
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
CC: Sriramakrishnan <srk@ti.com>
CC: Khasim Syed Mohammed <khasim@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Fix:
arch/arm/mach-sa1100/generic.c:117: error: redefinition of 'cpufreq_get'
include/linux/cpufreq.h:299: error: previous definition of 'cpufreq_get' was here
cpufreq_get() is used on these platforms to tell drivers what the CPU
frequency is, and therefore the bus frequency - which is critical for
setting the PCMCIA and LCD timings. Adding ifdefs to these drivers to
select cpufreq_get() or some other interface adds confusion. Making
these drivers use some other interface for the normal paths and cpufreq
stuff for the cpufreq notifier is insane as well.
(Why x86 can't provide a version of cpufreq_get() which returns the
CPU frequency when CPUFREQ is disabled is beyond me, rather than
requiring a dummy zero-returning cpufreq_get(). Especially as they
do:
unsigned long khz = cpufreq_get(cpu);
if (!khz)
khz = tsc_khz;
In other words, if CPUFREQ is disabled, get it from tsc_khz - why
not provide a dummy cpufreq_get() which returns tsc_khz?)
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
We inted to re-organise the plat-s3c/plat-s3c24xx/plat-s3c64xx into a
more generic plat-samsung with less code in the other plat- directories
to make it easier to port new devices and try and clear up some of the
naming issues with newer devices.
Start by creating a small arch/arm/plat-samsung with no actuall code in
so we can move items in as we process them.
Add this to arch/arm to allow it to build things once support is added.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This hooks the U8500 support into the ARM kbuild
system. This integration also enables SMP and its
helper functions for U8500 platform
Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Introduce the plat-nomadik folder for ST-Ericsson
machines including the existing nomadik 8815 architecture.
This also moves the existing MTU (MultiTimerUnit)
of nomadik 8815 to the proposed plat-nomadik and adds
HAS_MTU. The patch has been re-based to 2.6.32-rc6
Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com>
Acked-by: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The Marvell Dove (88AP510) is a high-performance, highly integrated,
low power SoC with high-end ARM-compatible processor (known as PJ4),
graphics processing unit, high-definition video decoding acceleration
hardware, and a broad range of peripherals.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
This updates the IOP platform to use the kernel's generic time
framework. With clockevent support in place, this reduces to
selecting GENERIC_TIME and removing the platform's private timer
->offset() operation (iop_gettimeoffset).
Tested on n2100, compile-tested for all plat-iop machines.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This updates the IOP platform to expose the interrupting
timer 0 as a clockevent object. The timer interrupt handler
is changed to call the clockevent ->event_handler() instead
of timer_tick(), and ->set_next_event() and ->set_mode()
operations are added to allow the mode of the timer to be
updated (required for ONESHOT/NOHZ mode).
Timer 0 must now be properly initialised, which requires
a new write_tcr0() function from the mach-specific code.
The mode of timer 0 must be read at the start of ->set_mode(),
which requires a new read_tmr0() function from the mach-
specific code.
Initial setup of timer 0 is also rewritten to be more robust.
Tested on n2100, compile-tested for all plat-iop machines.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This adds the TCM interface to Linux, when active, it will
detect and report TCM memories and sizes early in boot if
present, introduce generic TCM memory handling, provide a
generic TCM memory pool and select TCM memory for the U300
platform.
See the Documentation/arm/tcm.txt for documentation.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add the ARM implementation of highpte, which allows PTE tables to be
placed in highmem. Unfortunately, we do not offer highpte support
when support for L2 cache is enabled.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
S5PC100 is a new SoC with ARM coretex-A8 and numerous peripherals. This SoC is
successor of S3C64XX. S5PC100 has peripherals which are still similar to S3C
families so some drivers in "arch/arm/plat-s3c" can be shared. S5PC100 specific
drivers will be added in "arch/arm/plat-s5pcxx" or "arch/arm/mach-s5pc100"
Signed-off-by: Byungho Min <bhmin@samsung.com>
[ben-linux@fluff.org: tidy and edit description]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
add bcmring option in Kconfig and add entry in Makefile
in arch/arm directory
Signed-off-by: Leo Chen <leochen@broadcom.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Provide more useful introduction for w90x900
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add clocksource/clockevent support for w90p910 platform.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The changes introduced by this change are:
- drivers/mtd/Kconfig doesn't depend on ALIGNMENT_TRAP ||
!CPU_CP15_MMU any more
- the following files are sourced additionally:
+ drivers/macintosh/Kconfig
completely depends on PPC || MAC || X86
+ drivers/telephony/Kconfig
new
+ drivers/pps/Kconfig
new
+ drivers/infiniband/Kconfig
new
+ drivers/edac/Kconfig
depends on X86 || PPC
+ drivers/vlynq/Kconfig
depends on AR7 && EXPERIMENTAL (that is ARCH_MIPS)
+ drivers/xen/Kconfig
everything depends on XEN
+ drivers/platform/Kconfig
depends on X86
- drivers/regulator/Kconfig is sourced later as is
drivers/accessibility/Kconfig
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
before this patch ARM had it's own definition of CONFIG_PREEMPT.
Instead of that use the general definition provided in
kernel/Kconfig.preempt.
This patch changes the available options in *config. Namely PREEMPT
isn't a stand alone bool anymore, but part of a 'choice' the
following Kconfig symbols are added:
PREEMPT_NONE
PREEMPT_VOLUNTARY
Selecting PREEMPT_NONE now produces exactly the code as not selecting
PREEMPT before (apart from a comment in
/sys/kernel/debug/tracing/(per_cpu/cpuX/)?trace). The only difference
PREEMPT_VOLUNTARY does is that might_resched might reschedule. Both
should't introduce regressions.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Russell King <linux@arm.linux.org.uk>
Add debugfs support for the cpufreq driver to allow
information about the system state to be exported to
the user.
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Add the S3C24XX to the main ARM CPUFreq Kconfig support list.
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Add ARCH_HAS_CPUFREQ so that each machine config can select
it if they have CPUFREQ driver support. This means that the
CPUFREQ specific area does not need the if statement updating
each time a new machine is added.
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This patch adds the necessary entries to the Makefile and Kconfig
files for building the Thumb-2 kernel.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This patch adds various C and assembler macros that help with using
the unified assembler syntax for compiling files to either ARM or
Thumb-2 modes.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Add HAVE_CLK depends on for w90p910 platform.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds the basic infrastructure for the Nomadik 8815
CPU and the "Nomadik Hardware Kit" NHK8815. This patch only
includes the serial console and core stuff, no drivers.
Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch provides initial support for CPU frequency scaling on the
Samsung S3C ARM processors. Currently only S3C6410 processors are
supported, though addition of another data table with supported clock
rates should be sufficient to enable support for further CPUs.
Use the regulator framework to provide optional support for DVFS in
the S3C cpufreq driver. When a software controllable regulator is
configured the driver will use it to lower the supply voltage when
running at a lower frequency, giving improved power savings.
When regulator support is disabled or no regulator can be obtained
for VDDARM the driver will fall back to scaling only the frequency.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This is a RealView platform supporting core tiles with ARM11MPCore,
Cortex-A8 or Cortex-A9 (multicore) processors. It has support for MMC,
CompactFlash, PCI-E.
Signed-off-by: Colin Tuckley <colin.tuckley@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This implements {copy_to,clear}_user() by faulting in the userland
pages and then using the regular kernel mem{cpy,set}() to copy the
data (while holding the page table lock). This is a win if the regular
mem{cpy,set}() implementations are faster than the user copy functions,
which is the case e.g. on Feroceon, where 8-word STMs (which memcpy()
uses under the right conditions) give significantly higher memory write
throughput than a sequence of individual 32bit stores.
Here are numbers for page sized buffers on some Feroceon cores:
- copy_to_user on Orion5x goes from 51 MB/s to 83 MB/s
- clear_user on Orion5x goes from 89MB/s to 314MB/s
- copy_to_user on Kirkwood goes from 240 MB/s to 356 MB/s
- clear_user on Kirkwood goes from 367 MB/s to 1108 MB/s
- copy_to_user on Disco-Duo goes from 248 MB/s to 398 MB/s
- clear_user on Disco-Duo goes from 328 MB/s to 1741 MB/s
Because the setup cost is non negligible, this is worthwhile only if
the amount of data to copy is large enough. The operation falls back
to the standard implementation when the amount of data is below a certain
threshold. This threshold was determined empirically, however some targets
could benefit from a lower runtime determined value for optimal results
eventually.
In the copy_from_user() case, this technique does not provide any
worthwhile performance gain due to the fact that any kind of read access
allocates the cache and subsequent 32bit loads are just as fast as the
equivalent 8-word LDM.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Tested-by: Martin Michlmayr <tbm@cyrius.com>
Provide a generic SRAM allocator using genalloc, and vaguely
modeled after what AVR32 uses. This builds on top of the
static CPU mapping set up in the previous patch, and returns
DMA mappings as requested (if possible).
Compared to its OMAP cousin, there's no current support for
(currently non-existent) DaVinci power management code running
in SRAM; and this has ways to deallocate, instead of being
allocate-only.
The initial user of this should probably be the audio code,
because EDMA from DDR is subject to various dropouts on at
least DM355 and DM6446 chips.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
pfn_valid() is meant to be able to tell if a given PFN has valid memmap
associated with it or not. In FLATMEM, it is expected that holes always
have valid memmap as long as there is valid PFNs either side of the hole.
In SPARSEMEM, it is assumed that a valid section has a memmap for the
entire section.
However, ARM and maybe other embedded architectures in the future free
memmap backing holes to save memory on the assumption the memmap is never
used. The page_zone linkages are then broken even though pfn_valid()
returns true. A walker of the full memmap must then do this additional
check to ensure the memmap they are looking at is sane by making sure the
zone and PFN linkages are still valid. This is expensive, but walkers of
the full memmap are extremely rare.
This was caught before for FLATMEM and hacked around but it hits again for
SPARSEMEM because the page_zone linkages can look ok where the PFN linkages
are totally screwed. This looks like a hatchet job but the reality is that
any clean solution would end up consumning all the memory saved by punching
these unexpected holes in the memmap. For example, we tried marking the
memmap within the section invalid but the section size exceeds the size of
the hole in most cases so pfn_valid() starts returning false where valid
memmap exists. Shrinking the size of the section would increase memory
consumption offsetting the gains.
This patch identifies when an architecture is punching unexpected holes
in the memmap that the memory model cannot automatically detect and sets
ARCH_HAS_HOLES_MEMORYMODEL. At the moment, this is restricted to EP93xx
which is the model sub-architecture this has been reported on but may expand
later. When set, walkers of the full memmap must call memmap_valid_within()
for each PFN and passing in what it expects the page and zone to be for
that PFN. If it finds the linkages to be broken, it assumes the memmap is
invalid for that PFN.
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch-imx is superseeded by the MXC architecture support.
This patch removes arch-imx from the build system.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
All i.MX platforms support <linux/clk.h> calls and should select HAVE_CLK.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch is a workaround for the 460075 Cortex-A8 (r2p0) erratum. It
configures the L2 cache auxiliary control register so that the Write
Allocate mode for the L2 cache is disabled.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds a workaround for the 458693 Cortex-A8 (r2p0)
erratum. It sets the corresponding bits in the auxiliary control
register so that the PLD instruction becomes a NOP.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds the workaround for the 430973 Cortex-A8 (r1p0..r1p2)
erratum. The BTAC/BTB is now flushed at every context switch.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch implements the recommended workaround for erratum 411920
(ARM1136, ARM1156, ARM1176).
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This hooks the U300 support into Kbuild and makes a small hook
in mmu.c for supporting an odd memory alignment with shared memory
on these systems.
This is rebased to RMK:s GIT HEAD. This patch tries to add the
Kconfig option in alphabetic order by option text and the Makefile
entry after config symbol.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Added Kconfig/Makefile entries for STMP platform
Signed-off-by: dmitry pervushin <dpervushin@embeddedalley.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
cpufreq drivers for pxa2xx/3xx are now built-in automatically as soon as
CPU_FREQ is enabled.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
ARCH_PXA selects HAVE_CLK and COMMON_CLKDEV twice in arch/arm/Kconfig.
Remove the second entry.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
This is a significant rework of the low-level clock, PLL and Power
Sleep Controller (PSC) implementation for the DaVinci family. The
primary goal is to have better modeling if the hardware clocks and
features with the aim of DVFS functionality.
Highlights:
- model PLLs and all PLL-derived clocks
- model parent/child relationships of PLLs and clocks
- convert to new clkdev layer
- view clock frequency and refcount via /proc/davinci_clocks
Special thanks to significant contributions and testing by David
Brownell.
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Adds support for Cortina Systems Gemini family CPUs:
http://www.cortina-systems.com/products/category/18
v3:
- fixed __io(a) to be defined as __typesafe_io(a)
v2:
- #include <asm/io.h> -> <linux/io.h>
- remove asm/system.h include
- revorked mm.c to use named initializers
- removed "empty" dma.h
- updated copyrights
Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
"""The Marvell® PXA168 processor is the first in a family of application
processors targeted at mass market opportunities in computing and consumer
devices. It balances high computing and multimedia performance with low
power consumption to support extended battery life, and includes a wealth
of integrated peripherals to reduce overall BOM cost .... """
See http://www.marvell.com/featured/pxa168.jsp for more information.
1. Marvell Mohawk core is a hybrid of xscale3 and its own ARM core,
there are many enhancements like instructions for flushing the
whole D-cache, and so on
2. Clock reuses Russell's common clkdev, and added the basic support
for UART1/2.
3. Devices are a bit different from the 'mach-pxa' way, the platform
devices are now dynamically allocated only when necessary (i.e.
when pxa_register_device() is called). Description for each device
are stored in an array of 'struct pxa_device_desc'. Now that:
a. this array of device description is marked with __initdata and
can be freed up system is fully up
b. which means board code has to add all needed devices early in
his initializing function
c. platform specific data can now be marked as __initdata since
they are allocated and copied by platform_device_add_data()
4. only the basic UART1/2/3 are added, more devices will come later.
Signed-off-by: Jason Chagas <chagas@marvell.com>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
1. introduce folder of 'arch/arm/plat-pxa' for common code across different
PXA processor families
2. initially moved DMA code into plat-pxa
3. common code in <mach/dma.h> moved into <plat/dma.h>, new processors
should implement its own <mach/dma.h>, provide the following required
definitions and '#include <plat/dma.h>' in the end:
- DMAC_REGS_VIRT for mapped virtual address of the DMA registers'
physical I/O memory
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Here it is... HIGHMEM for the ARM architecture. :-)
If you don't have enough ram for highmem pages to be allocated and still
want to test this, then the cmdline option "vmalloc=" can be used with
a value large enough to force the highmem threshold down.
Successfully tested on a Marvell DB-78x00-BP Development Board with
2 GB of RAM.
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Code has never been in buildable state since initial
merge.
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add support for gpiolib, including debugfs output, to the AT91 family.
The at91_get/set_gpio_value calls still exist since they are used by the
atmel serial driver.
Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The new Kconfig option to build "staging" drivers (code in
drivers/staging/) is seen in all except three architectures (arm, h8300,
cris), because in these cases arch/$ARCH/Kconfig does NOT source
drivers/Kconfig.
This patch adds the source "drivers/staging/Kconfig" to
arch/$ARCH/Kconfig for these three exceptional cases.
Signed-off-by: Duncan Haldane <duncan_h@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch is as small a change as possible to the KS8695 GPIO layer
to use GPIOLIB to allow the generic GPIO expanders and the like to
be compiled.
As a side-effect, we also remove __init_or_module from several
functions which could be called by drivers such as i2c-gpio which
could plausibly be compiled into a non-modular kernel.
Signed-off-by: Daniel Silverstone <dsilvers@simtec.co.uk>
Signed-off-by: Vincent Sanders <vince@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This is based on a patch by Luotao Fu <lfu@pengutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Luotao Fu <lfu@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
the needed infrastructure is already in place, only selecting
GENERIC_TIME was missing.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Add Nuvoton W90X900 ARM9 plat support to linux arm tree,
Now, this patch include only W90P910 EVB of W90P910 CPU,
Its driver is nothing.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds the necessary definitions and Kconfig entries to enable
Cortex-A9 (ARMv7 SMP) tiles on the RealView/EB board.
Signed-off-by: Jon Callan <Jon.Callan@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
People often point to the Integrator/Versatile/Realview
implementations to justify using the consumer name as the sole
selector for clocks.
Eliminate this excuse by changing the Versatile implementation, so
it provides a better example of how it should be done.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
People often point to the Integrator/Versatile/Realview
implementations to justify using the consumer name as the sole
selector for clocks.
Eliminate this excuse by changing the Integrator implementation, so
it provides a better example of how it should be done.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
People often point to the Integrator/Versatile/Realview
implementations to justify using the consumer name as the sole
selector for clocks.
Eliminate this excuse by changing the Realview implementation, so
it provides a better example of how it should be done.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The CLPS7500 platform has not built since 2.6.22-git7 and there
seems to be no interest in fixing it. So, remove the platform
support.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Rather than:
config CPU_BLAH
bool
depends on ARCH_FOO || MACH_BAR
default y if ARCH_FOO || MACH_BAR
arrange for ARCH_FOO and MACH_BAR to select CPU_BLAH directly.
Acked-by: Nicolas Pitre <nico@marvell.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Acked-by: Brian Swetland <swetland@google.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Nicolas Bellido <ml@acolin.be>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] pxa: corgi backlight driver should not select ssp drivers
[ARM] 5321/1: Kirkwood: fix typo in Makefile
[ARM] 5320/1: fix assembly constraints in implementation of do_div()
[ARM] 5318/1: Swap the PRRR and NMRR values in proc-v7.S
[ARM] 5316/1: AT91: oops (regression) fix on gpio irq
[ARM] msm: vreg interface to msm7k pmic
[ARM] msm: dma: various basic dma improvements and bugfixes
[ARM] msm: clock: provide clk_*() api support for
[ARM] msm: clean up iomap and devices
[ARM] msm: add proc_comm support, necessary for clock and power control
[ARM] msm: rename ARCH_MSM7X00A to ARCH_MSM
[ARM] pxa/spitz: fix unbalance parenthesis in header file spitz.h
[ARM] pxa: update {corgi,spitz}_defconfig to favor SPI-based drivers
[ARM] pxa: fix the corgi_ssp.c dependency issue in {corgi,spitz}_defconfig
Revert "[ARM] pxa/corgi: remove now unused corgi_ssp.c and corgi_lcd.c"
* 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb: (47 commits)
uwb: wrong sizeof argument in mac address compare
uwb: don't use printk_ratelimit() so often
uwb: use kcalloc where appropriate
uwb: use time_after() when purging stale beacons
uwb: add credits for the original developers of the UWB/WUSB/WLP subsystems
uwb: add entries in the MAINTAINERS file
uwb: depend on EXPERIMENTAL
wusb: wusb-cbaf (CBA driver) sysfs ABI simplification
uwb: document UWB and WUSB sysfs files
uwb: add symlinks in sysfs between radio controllers and PALs
uwb: dont tranmit identification IEs
uwb: i1480/GUWA100U: fix firmware download issues
uwb: i1480: remove MAC/PHY information checking function
uwb: add Intel i1480 HWA to the UWB RC quirk table
uwb: disable command/event filtering for D-Link DUB-1210
uwb: initialize the debug sub-system
uwb: Fix handling IEs with empty IE data in uwb_est_get_size()
wusb: fix bmRequestType for Abort RPipe request
wusb: fix error path for wusb_set_dev_addr()
wusb: add HWA host controller driver
...
The ftrace daemon is complex and can cause nasty races if something goes
wrong. Since it affects all of the kernel, this patch disables dynamic
ftrace from any arch that depends on the daemon. Until the archs are
ported over to the new MCOUNT_RECORD method, I am disabling dynamic
ftrace from them.
Note: I am leaving in the arch/<arch>/kernel/ftrace.c code alone since
that can be used when the arch is ported to MCOUNT_RECORD. To port
the arch to MCOUNT_RECORD, the scripts/recordmcount.pl needs to be
updated. I will make that easier to do for 2.6.29. For 28, we will keep
the archs disabled.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The MSM architecture covers a wider family of chips than just the MSM7X00A.
Move to a more generic name, in perparation for supporting the specific
SoC variants as sub-architectures (ARCH_MSM7X01A, ARCH_MSM722X, etc). This
gives us ARCH_MSM for the (many) common peripherals.
This also removes the unused/obsolete config item MSM7X00A_IDLE.
Signed-off-by: Brian Swetland <swetland@google.com>
Due to confusion between the ftrace infrastructure and the gcc profiling
tracer "ftrace", this patch renames the config options from FTRACE to
FUNCTION_TRACER. The other two names that are offspring from FTRACE
DYNAMIC_FTRACE and FTRACE_MCOUNT_RECORD will stay the same.
This patch was generated mostly by script, and partially by hand.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This patch implements a new freezer subsystem in the control groups
framework. It provides a way to stop and resume execution of all tasks in
a cgroup by writing in the cgroup filesystem.
The freezer subsystem in the container filesystem defines a file named
freezer.state. Writing "FROZEN" to the state file will freeze all tasks
in the cgroup. Subsequently writing "RUNNING" will unfreeze the tasks in
the cgroup. Reading will return the current state.
* Examples of usage :
# mkdir /containers/freezer
# mount -t cgroup -ofreezer freezer /containers
# mkdir /containers/0
# echo $some_pid > /containers/0/tasks
to get status of the freezer subsystem :
# cat /containers/0/freezer.state
RUNNING
to freeze all tasks in the container :
# echo FROZEN > /containers/0/freezer.state
# cat /containers/0/freezer.state
FREEZING
# cat /containers/0/freezer.state
FROZEN
to unfreeze all tasks in the container :
# echo RUNNING > /containers/0/freezer.state
# cat /containers/0/freezer.state
RUNNING
This is the basic mechanism which should do the right thing for user space
task in a simple scenario.
It's important to note that freezing can be incomplete. In that case we
return EBUSY. This means that some tasks in the cgroup are busy doing
something that prevents us from completely freezing the cgroup at this
time. After EBUSY, the cgroup will remain partially frozen -- reflected
by freezer.state reporting "FREEZING" when read. The state will remain
"FREEZING" until one of these things happens:
1) Userspace cancels the freezing operation by writing "RUNNING" to
the freezer.state file
2) Userspace retries the freezing operation by writing "FROZEN" to
the freezer.state file (writing "FREEZING" is not legal
and returns EIO)
3) The tasks that blocked the cgroup from entering the "FROZEN"
state disappear from the cgroup's set of tasks.
[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: export thaw_process]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Tested-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rather than having everything that needs DMABOUNCE also select
ZONE_DMA, arrange for DMABOUNCE to select it instead. This is
far more sensible.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Most ARM machines don't need a special "DMA" memory zone, and
when configured out, the kernel becomes a bit smaller:
| text data bss dec hex filename
|3826182 102384 111700 4040266 3da64a vmlinux
|3823593 101616 111700 4036909 3d992d vmlinux.nodmazone
This is because the system now has only one zone total which effect is
to optimize away many conditionals in page allocation paths.
So let's configure this zone only on machines that need split zones.
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Remove the old led support in arch/arm/mach-pxa/leds...
for TRIZEPS4 SOM. It is / will be replaced by generic
led driver drivers/leds/...
Signed-off-by: Jürgen Schindele <linux@schindele.name>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Enable Sparsemem support for LH7A40x SoCs, while still allowing the
existing discontig support for the time being.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The Orion-1-90 (88F6183) is another member of the Orion SoC family,
which has a 16 bit DDR2 interface, one x1 PCIe port (configurable as
Root Complex or Endpoint), one 10/100/1000 ethernet interface, one
USB 2.0 port with PHY, one SPDIF/I2S interface, one SDIO interface,
one TWSI interface, two UARTs, one SPI interface, a NAND controller,
a crypto engine, and a 4-channel DMA engine.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Switch DaVinci SOC gpios over to using the new GPIO library, so it can
access GPIO expanders and other non-SOC GPIOs using the same calls.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
HAVE_AOUT doesn't quite do the same thing as the recently removed
ARCH_SUPPORTS_AOUT config option. That was set even on platforms where
binfmt_aout isn't supported, although it's not entirely clear why.
So it's best just to introduce a new symbol, handled consistently with
other similar HAVE_xxx symbols; with a simple 'select' in the arch Kconfig.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This patch adds a config option (CONFIG_VMSPLIT_*) to allow choosing
between 3:1, 2:2 and 1:3 user:kernel memory splits.
Tested-by: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add Oprofile kernel support for ARMv7.
Tested on OMAP3430 and OMAP3530 chipsets (Cortex-A8).
Signed-off-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Ordinarily, memory holes in flatmem still have a valid memmap and is safe
to use. However, an architecture (ARM) frees up the memmap backing memory
holes on the assumption it is never used. /proc/pagetypeinfo reads the
whole range of pages in a zone believing that the memmap is valid and that
pfn_valid will return false if it is not. On ARM, freeing the memmap breaks
the page->zone linkages even though pfn_valid() returns true and the kernel
can oops shortly afterwards due to accessing a bogus struct zone *.
This patch lets architectures say when FLATMEM can have holes in the
memmap. Rather than an expensive check for valid memory, /proc/pagetypeinfo
will confirm that the page linkages are still valid by checking page->zone
is still the expected zone. The lookup of page_zone is safe as there is a
limited range of memory that is accessed when calling page_zone. Even if
page_zone happens to return the correct zone, the impact is that the counters
in /proc/pagetypeinfo are slightly off but fragmentation monitoring is
unlikely to be relevant on an embedded system.
Reported-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds kernel build support for the regulator core.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (21 commits)
x86/PCI: use dev_printk when possible
PCI: add D3 power state avoidance quirk
PCI: fix bogus "'device' may be used uninitialized" warning in pci_slot
PCI: add an option to allow ASPM enabled forcibly
PCI: disable ASPM on pre-1.1 PCIe devices
PCI: disable ASPM per ACPI FADT setting
PCI MSI: Don't disable MSIs if the mask bit isn't supported
PCI: handle 64-bit resources better on 32-bit machines
PCI: rewrite PCI BAR reading code
PCI: document pci_target_state
PCI hotplug: fix typo in pcie hotplug output
x86 gart: replace to_pages macro with iommu_num_pages
x86, AMD IOMMU: replace to_pages macro with iommu_num_pages
iommu: add iommu_num_pages helper function
dma-coherent: add documentation to new interfaces
Cris: convert to using generic dma-coherent mem allocator
Sh: use generic per-device coherent dma allocator
ARM: support generic per-device coherent dma mem
Generic dma-coherent: fix DMA_MEMORY_EXCLUSIVE
x86: use generic per-device dma coherent allocator
...
This fixes a merge goof whereby ARCH_EP93XX got the "select HAVE_CLK" line
which belongs instead with ARCH_AT91.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7444a72eff caused these platforms to lose
their GPIOLIB configuration. Convert the missed Kconfig symbols using:
sed -i s/HAVE_GPIO_LIB/ARCH_REQUIRE_GPIOLIB/ arch/arm/Kconfig arch/arm/plat-s3c24xx/Kconfig
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds functionality to the gpio-lib subsystem to make it
possible to enable the gpio-lib code even if the architecture code didn't
request to get it built in.
The archtitecture code does still need to implement the gpiolib accessor
functions in its asm/gpio.h file. This patch adds the implementations for
x86 and PPC.
With these changes it is possible to run generic GPIO expansion cards on
every architecture that implements the trivial wrapper functions. Support
for more architectures can easily be added.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: David Brownell <david-b@pacbell.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Samuel Ortiz <sameo@openedhand.com>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Flag platforms as HAVE_CLK (or not) in Kconfig, based on whether they
support <linux/clk.h> calls, so that otherwise portable drivers which need
those calls can list that dependency.
Something like this is a prerequisite for merging the musb_hdrc driver,
currently used on platforms including Davinci, OMAP2430, OMAP3xx ... and
the discrete TUSB6010 chip, which doesn't have a natural platform
dependency. (Used with OMAP 2420 in current Nokia N8x0 tablets.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch adds the ARCH=arm specific a kgdb backend, originally
written by Deepak Saxena <dsaxena@plexity.net> and George Davis
<gdavis@mvista.com>. Geoff Levand <geoffrey.levand@am.sony.com>,
Nicolas Pitre, Manish Lachwani, and Jason Wessel have contributed
various fixups here as well.
The KGDB patch makes one change to the core ARM architecture such that
the traps are initialized early for use with the debugger or other
subsystems.
[ mingo@elte.hu: small cleanups. ]
[ ben-linux@fluff.org: fixed early_trap_init ]
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Acked-by: Deepak Saxena <dsaxena@plexity.net>
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (241 commits)
[ARM] 5171/1: ep93xx: fix compilation of modules using clocks
[ARM] 5133/2: at91sam9g20 defconfig file
[ARM] 5130/4: Support for the at91sam9g20
[ARM] 5160/1: IOP3XX: gpio/gpiolib support
[ARM] at91: Fix NAND FLASH timings for at91sam9x evaluation kits.
[ARM] 5084/1: zylonite: Register AC97 device
[ARM] 5085/2: PXA: Move AC97 over to the new central device declaration model
[ARM] 5120/1: pxa: correct platform driver names for PXA25x and PXA27x UDC drivers
[ARM] 5147/1: pxaficp_ir: drop pxa_gpio_mode calls, as pin setting
[ARM] 5145/1: PXA2xx: provide api to control IrDA pins state
[ARM] 5144/1: pxaficp_ir: cleanup includes
[ARM] pxa: remove pxa_set_cken()
[ARM] pxa: allow clk aliases
[ARM] Feroceon: don't disable BPU on boot
[ARM] Orion: LED support for HP mv2120
[ARM] Orion: add RD88F5181L-FXO support
[ARM] Orion: add RD88F5181L-GE support
[ARM] Orion: add Netgear WNR854T support
[ARM] s3c2410_defconfig: update for current build
[ARM] Acer n30: Minor style and indentation fixes.
...
This includes PXA work up to the SPI changes for the initial merge,
since e172274ccc depends on the SPI
tree being merged.
Conflicts:
arch/arm/configs/em_x270_defconfig
arch/arm/configs/xm_x270_defconfig
This patch brings support for gpio/gpiolib framework to Intel IOP3xx
platforms.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds timer support for the i.MX machine family. This code can
be used on the following machs:
- i.MX1 (tested)
- i.MX2 (i.MX21 (to be tested), i.MX27 (tested))
- i.MX3 (i.MX31 (tested))
TODO: It seems impossible to build a kernel for more than one CPU because the
timer do not follow the platform device rules. So it does only work if
timer 1 can be accessed on all CPUs at the same address.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch bases on the one from Daniel Mack. The most important change to
Daniel's patch is to be more generic. This gpio routine supports at least
the i.MX27 and i.MX31 processors.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
Acked-by: Daniel Mack <daniel@caiaq.de>
ARM architecture is not using __do_IRQ
Acked-By: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Use HAVE_PATA_PLATFORM for ARCH_RPC
Cc: Linux ARM Kernel <linux-arm-kernel@lists.arm.linux.org.uk>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This converts arm to use the new helpers for smp_call_function() and
friends, and adds support for smp_call_function_single().
Fixups and testing done by Catalin Marinas <catalin.marinas@arm.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
The Marvell Discovery Duo (MV78xx0) is a family of ARM SoCs featuring
(depending on the model) one or two Feroceon CPU cores with 512K of L2
cache and VFP coprocessors running at (depending on the model) between
800 MHz and 1.2 GHz, and features a DDR2 controller, two PCIe
interfaces that can each run either in x4 or quad x1 mode, three USB
2.0 interfaces, two 3Gb/s SATA II interfaces, a SPI interface, two
TWSI interfaces, a crypto accelerator, IDMA/XOR engines, a SPI
interface, four UARTs, and depending on the model, two or four gigabit
ethernet interfaces.
This patch adds basic support for the platform, and allows booting
on the MV78x00 development board, with functional UARTs, SATA, PCIe,
GigE and USB ports.
Signed-off-by: Stanislav Samsonov <samsonov@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
The Marvell Kirkwood (88F6000) is a family of ARM SoCs based on a
Shiva CPU core, and features a DDR2 controller, a x1 PCIe interface,
a USB 2.0 interface, a SPI controller, a crypto accelerator, a TS
interface, and IDMA/XOR engines, and depending on the model, also
features one or two Gigabit Ethernet interfaces, two SATA II
interfaces, one or two TWSI interfaces, one or two UARTs, a
TDM/SLIC interface, a NAND controller, an I2S/SPDIF interface, and
an SDIO interface.
This patch adds supports for the Marvell DB-88F6281-BP Development
Board and the RD-88F6192-NAS and the RD-88F6281 Reference Designs,
enabling support for the PCIe interface, the USB interface, the
ethernet interfaces, the SATA interfaces, the TWSI interfaces, the
UARTs, and the NAND controller.
Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
The Marvell Loki (88RC8480) is an ARM SoC based on a Feroceon CPU
core running at between 400 MHz and 1.0 GHz, and features a 64 bit
DDR controller, 512K of internal SRAM, two x4 PCI-Express ports,
two Gigabit Ethernet ports, two 4x SAS/SATA controllers, two UARTs,
two TWSI controllers, and IDMA/XOR engines.
This patch adds support for the Marvell LB88RC8480 Development
Board, enabling the use of the PCIe interfaces, the ethernet
interfaces, the TWSI interfaces and the UARTs.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Available for !SMP only at the moment.
From Russell:
|Basically, if a thread is running on a CPU, thread_saved_fp() is invalid.
|So, the question is: what guarantees do we have here that 'tsk' is not
|running on another CPU?
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Tested-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Core ftrace support for the ARM architecture, which includes support
for dynamic function tracing.
Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
dyntick is superseded by the clocksource/clockevent infrastructure,
using the NO_HZ configuration option. No one implements dyntick on
ARM anymore, so it's pointless keeping it around. Remove dyntick
support.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Trying to compile a kerel for ARCH_CO285 fails with the following error:
<-- snip -->
...
CC arch/arm/mach-footbridge/dc21285.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/dc21285.c:
In function 'dc21285_base_address':
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/dc21285.c:54: error: 'PCICFG0_BASE' undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/dc21285.c:54: error: (Each undeclared identifier is reported only once
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/dc21285.c:54: error: for each function it appears in.)
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/dc21285.c:57: error: 'PCICFG1_BASE' undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/dc21285.c:
In function 'dc21285_scan_bus':
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/dc21285.c:286: error: implicit declaration of function 'pci_scan_bus'
...
make[2]: *** [arch/arm/mach-footbridge/dc21285.o] Error 1
<-- snip -->
This does not seem to be a recent breakage.
The ARCH_CO285 support is old - kernel 2.2.0 contains first traces of
it, an it seems to have been pretty complete in later 2.2 kernels.
Since it seems to be completely dead code now this patch therefore
removes it.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
It's plain wrong for PCMCIA to select HAVE_IDE that implies e.g. the
availability of an asm/ide.h
It turns out this was done for ARM, and we can simply always select
HAVE_IDE on ARM instead of manually tracking which platforms might
possible have an IDE controller directly or indirectly.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: (36 commits)
SCSI: convert struct class_device to struct device
DRM: remove unused dev_class
IB: rename "dev" to "srp_dev" in srp_host structure
IB: convert struct class_device to struct device
memstick: convert struct class_device to struct device
driver core: replace remaining __FUNCTION__ occurrences
sysfs: refill attribute buffer when reading from offset 0
PM: Remove destroy_suspended_device()
Firmware: add iSCSI iBFT Support
PM: Remove legacy PM (fix)
Kobject: Replace list_for_each() with list_for_each_entry().
SYSFS: Explicitly include required header file slab.h.
Driver core: make device_is_registered() work for class devices
PM: Convert wakeup flag accessors to inline functions
PM: Make wakeup flags available whenever CONFIG_PM is set
PM: Fix misuse of wakeup flag accessors in serial core
Driver core: Call device_pm_add() after bus_add_device() in device_add()
PM: Handle device registrations during suspend/resume
block: send disk "change" event for rescan_partitions()
sysdev: detect multiple driver registrations
...
Fixed trivial conflict in include/linux/memory.h due to semaphore header
file change (made irrelevant by the change to mutex).
Source drivers/uio/Kconfig to make UIO available in menuconfig if ARCH=arm.
Signed-off-by: Hans J Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Adds support for the generic GPIO lib to the EP93xx family. The gpio
handling code has been moved from core.c to a new file called gpio.c.
The GPIO based IRQ code has not been changed.
Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds the PB11MPCore support to the corresponding Kconfig
and Makefile to enable building.
Signed-off-by: Bahadir Balban <bahadir.balban@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
d142b6e77d added clock source support,
now it's time for the clock event support.
Tested-by: Thomas Kunze <thommycheck@gmx.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Update OMAP to use the new GPIO implementation framework. This is just a
quick'n'dirty update ... more code could now be removed, ideally as part
of cleaning up the entire OMAP GPIO infrastructure ...
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This adds gpiolib support for the SA-1100 arch:
- Move all GPIO API functions from generic.c into gpio.c
- Convert all gpio functions into gpiolib callbacks.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Do a global s/orion/orion5x/ of the Orion 5x-specific bits (i.e.
not the plat-orion bits.)
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reviewed-by: Tzachi Perelstein <tzachi@marvell.com>
Acked-by: Saeed Bishara <saeed@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Create arch/arm/plat-orion/, for peripherals shared between various
Marvell Orion SoCs.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reviewed-by: Tzachi Perelstein <tzachi@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
One-shot mode was broken in MPU-timer support for OMAP1 due to a typo.
Also, ensure timer is stopped before changing the auto-reload flag.
The TRM says changing the AR flag when timer is running is undefined.
Also set GENERIC_CLOCKEVENTS for all omaps.
Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Add CONFIG_HAVE_KRETPROBES to the arch/<arch>/Kconfig file for relevant
architectures with kprobes support. This facilitates easy handling of
in-kernel modules (like samples/kprobes/kretprobe_example.c) that depend on
kretprobes being present in the kernel.
Thanks to Sam Ravnborg for helping make the patch more lean.
Per Mathieu's suggestion, added CONFIG_KRETPROBES and fixed up dependencies.
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
On Wed, Feb 20, 2008 at 11:50:33AM +0100, Guennadi Liakhovetski wrote:
> arch/arm/kernel/atags.c uses for some reason the
> KEXEC_BOOT_PARAMS_SIZE macro, which is only defined if CONFIG_KEXEC
> is set. So, either this macro should be defined always, or another
> macro should be used, or ATAGS_PROC should depend on KEXEC.
As the procfs export of ATAGS is not meant as a stable, general purpose
ABI it shouldn't be an independent, general configuration option.
This patch make ATAGS_PROC depend on KEXEC
Signed-off-by: Uli Luckas <u.luckas@road.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
To allow flexible configuration of IDE introduce HAVE_IDE.
All archs except arm, um and s390 unconditionally select it.
For arm the actual configuration determine if IDE is supported.
This is a step towards introducing drivers/Kconfig for arm.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Russell King - ARM Linux <linux@arm.linux.org.uk>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Mark arches that support A.OUT format by including the following in their
master Kconfig files:
config ARCH_SUPPORTS_AOUT
def_bool y
This should also be set if the arch provides compatibility A.OUT support for
an older arch, for instance x86_64 for i386 or sparc64 for sparc.
I've guessed at which arches don't, based on comments in the code, however I'm
sure that some of the ones I've marked as 'yes' actually should be 'no'.
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This adds gpiolib support for the PXA architecture:
- move all GPIO API functions from generic.c into gpio.c
- convert the gpio_get/set_value macros into inline functions
This makes it easier to hook up GPIOs provided by external chips like
ASICs and CPLDs.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Eric Miao <eric.miao@marvell.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Minor ARM fixup from David Brownell folded into this ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO
expanders. It will be populated by later patches.
This won't be the only place to hold such gpio_chip code. Many external chips
add a few GPIOs as secondary functionality (such as MFD drivers) and platform
code frequently needs to closely integrate GPIO and IRQ support.
This is placed *early* in the build/link sequence since it's common for other
drivers to depend on GPIOs to do their work, so they must be initialized early
in the device_initcall() sequence.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
Cc: Eric Miao <eric.miao@marvell.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (44 commits)
[ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option
[ARM] 4821/1: RealView: Remove the platform dependencies from localtimer.c
[ARM] 4820/1: RealView: Select the timer IRQ at run-time
[ARM] 4819/1: RealView: Fix entry-macro.S to work with multiple platforms
[ARM] 4818/1: RealView: Add core-tile detection
[ARM] 4817/1: RealView: Move the AMBA resource definitions to realview_eb.c
[ARM] 4816/1: RealView: Move the platform-specific definitions into board-eb.h
[ARM] 4815/1: RealView: Add clockevents suport for the local timers
[ARM] 4814/1: RealView: Add broadcasting clockevents support for ARM11MPCore
[ARM] 4813/1: Add SMP helper functions for clockevents support
[ARM] 4812/1: RealView: clockevents support for the RealView platforms
[ARM] 4811/1: RealView: clocksource support for the RealView platforms
[ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags
[ARM] 4798/1: pcm027: fix missing header file
[ARM] 4803/1: pxa: fix building issue of poodle.c caused by patch 4737/1
[ARM] 4801/1: pxa: fix building issues of missing pxa2xx-regs.h
[ARM] pxa: introduce sysdev for pxa3xx static memory controller
[ARM] pxa: add preliminary suspend/resume code for pxa3xx
[ARM] pxa: introduce sysdev for GPIO register saving/restoring
[ARM] pxa: introduce sysdev for IRQ register saving/restoring
...
* at91:
[ARM] 4802/1: Fix typo and remove vague comment
[ARM] 4660/3: at91: allow selecting UART for early kernel messages
[ARM] 4739/1: at91sam9263: make gpio bank C and D irqs work
* ixp:
[ARM] 4809/2: ixp4xx: Merge dsmg600-power.c into dsmg600-setup.c
[ARM] 4808/2: ixp4xx: Merge nas100d-power.c into nas100d-setup.c
[ARM] 4807/2: ixp4xx: Merge nslu2-power.c into nslu2-setup.c
[ARM] 4806/1: ixp4xx: Ethernet support for the nslu2 and nas100d boards
[ARM] 4805/1: ixp4xx: Use leds-gpio driver instead of IXP4XX-GPIO-LED driver
[ARM] 4715/2: Ethernet support for IXDP425 boards
[ARM] 4714/2: Headers for IXP4xx built-in Ethernet and WAN drivers
[ARM] 4713/3: Adds drivers for IXP4xx QMgr and NPE features
[ARM] 4712/2: Adds functions to read and write IXP4xx "feature" bits
[ARM] 4774/2: ixp4xx: Register dsmg600 rtc i2c_board_info
[ARM] 4773/2: ixp4xx: Register nas100d rtc i2c_board_info
[ARM] 4772/2: ixp4xx: Register nslu2 rtc i2c_board_info
[ARM] 4769/2: ixp4xx: Button updates for the dsmg600 board
[ARM] 4768/2: ixp4xx: Button and LED updates for the nas100d board
[ARM] 4767/2: ixp4xx: Add bitops.h include to io.h
[ARM] 4766/2: ixp4xx: Update ixp4xx_defconfig, enabling all supported boards
* master:
[ARM] 4810/1: - Fix 'section mismatch' building warnings
[ARM] xtime_seqlock: fix more ARM machines for xtime deadlocking
[ARM] 21285 serial: fix build error
* misc:
[ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags
* pxa:
[ARM] 4798/1: pcm027: fix missing header file
[ARM] 4803/1: pxa: fix building issue of poodle.c caused by patch 4737/1
[ARM] 4801/1: pxa: fix building issues of missing pxa2xx-regs.h
[ARM] pxa: introduce sysdev for pxa3xx static memory controller
[ARM] pxa: add preliminary suspend/resume code for pxa3xx
[ARM] pxa: introduce sysdev for GPIO register saving/restoring
[ARM] pxa: introduce sysdev for IRQ register saving/restoring
[ARM] pxa: fix the warning of undeclared "struct pxaohci_platform_data"
[ARM] pxa: change set_kset_name() to direct name assignment for MFP sysclass
* realview:
[ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option
[ARM] 4821/1: RealView: Remove the platform dependencies from localtimer.c
[ARM] 4820/1: RealView: Select the timer IRQ at run-time
[ARM] 4819/1: RealView: Fix entry-macro.S to work with multiple platforms
[ARM] 4818/1: RealView: Add core-tile detection
[ARM] 4817/1: RealView: Move the AMBA resource definitions to realview_eb.c
[ARM] 4816/1: RealView: Move the platform-specific definitions into board-eb.h
[ARM] 4815/1: RealView: Add clockevents suport for the local timers
[ARM] 4814/1: RealView: Add broadcasting clockevents support for ARM11MPCore
[ARM] 4813/1: Add SMP helper functions for clockevents support
[ARM] 4812/1: RealView: clockevents support for the RealView platforms
[ARM] 4811/1: RealView: clocksource support for the RealView platforms
This patch changes the REALVIEW_MPCORE configuration option to
REALVIEW_EB_ARM11MP since this is only specific to RealView/EB.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds dummy local timers for each CPU so that the board clock
device is used to broadcast events to the other CPUs. The patch also
adds the declaration for the dummy_timer_setup function (the equivalent
of local_timer_setup when CONFIG_LOCAL_TIMERS is not set).
Due to the way clockevents work, the dummy timer on the first CPU has to
be registered before the board timer.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The patch updates the RealView code to the clockevents infrastructure.
The SMP support is implemented in subsequent patches. Based on the
Versatile implementation by Kevin Hilman.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The patch updates the RealView platform code to use the generic
clocksource infrastructure for basic time keeping. Based on the
Versatile implementation by Kevin Hilman.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Currently, the atags used by kexec are fixed to the ones originally used
to boot the kernel. This is less than ideal as changing the commandline,
initrd and other options would be a useful feature.
This patch exports the atags used for the current kernel to userspace
through an "atags" file in procfs. The presence of the file is
controlled by its own Kconfig option and cleans up several ifdef blocks
into a separate file. The tags for the new kernel are assumed to be at
a fixed location before the kernel image itself. The location of the
tags used to boot the original kernel is unimportant and no longer
saved.
Based on a patch from Uli Luckas <u.luckas@road.de>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Uli Luckas <u.luckas@road.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King