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* ARCH OMAP : enable ARCH_HAS_HOLES_MEMORYMODEL for OMAPSriram2010-02-031-0/+1
| | | | | | | | | | | | | | | 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>
* ARM: fix badly placed mach/plat entries in Kconfig & MakefileRussell King2010-01-171-35/+35
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* arm: add support for LZO-compressed kernelsAlbin Tonnerre2010-01-111-0/+2
| | | | | | | | | | | | | | | | | | | | | - 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>
* davinci: enable ARCH_HAS_HOLES_MEMORYMODEL for DaVinciSekhar Nori2010-01-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | 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>
* ARM: fix sa1100 buildRussell King2009-12-131-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Merge branch 'devel-stable' into develRussell King2009-12-051-0/+16
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| * Merge branch 'for-rmk' of git://git.fluff.org/bjdooks/linux into devel-stableRussell King2009-12-041-0/+1
| |\ | | | | | | | | | | | | Conflicts: arch/arm/Kconfig
| | * ARM: SAMSUNG: Add plat-samsung as starting point for plat-s3c* movesBen Dooks2009-12-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | Merge branch 'for-rmk' of git://git.marvell.com/orion into devel-stableRussell King2009-12-011-0/+13
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| | * | ARM: add base support for Marvell Dove SoCSaeed Bishara2009-11-271-0/+13
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | iop: enable generic timeMikael Pettersson2009-10-291-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | iop: clockevent supportMikael Pettersson2009-10-291-0/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | ARM: 5834/1: ARM: U8500 integrate to ARM architectureSrinidhi Kasagar2009-11-281-4/+16
| | | | | | | | | | | | | | | | | | | | 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>
* | ARM: 5786/1: Introduce plat-nomadik, MTU code re-organizationSrinidhi Kasagar2009-11-281-0/+1
|/ | | | | | | | | | | | 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>
* ARM: 5580/2: ARM TCM (Tightly-Coupled Memory) support v3Linus Walleij2009-09-151-0/+5
| | | | | | | | | | | | | 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>
* Merge branch 'devel-stable' into develRussell King2009-09-121-118/+113
|\ | | | | | | | | | | Conflicts: MAINTAINERS arch/arm/mm/fault.c
| * Merge branch 'nomadik' into devel-stableRussell King2009-09-121-0/+16
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| | * [ARM] 5584/1: nomadik: add gpio driver and devicesAlessandro Rubini2009-07-021-1/+2
| | | | | | | | | | | | | | | | | | 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>
| | * [ARM] 5590/1: Add basic support for ST Nomadik 8815 SoC and evaluation boardAlessandro Rubini2009-07-021-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | Merge branch 'next-s3c' of git://aeryn.fluff.org.uk/bjdooks/linux into ↵Russell King2009-08-171-1/+73
| |\ \ | | | | | | | | | | | | devel-stable
| | * | ARM: S5PC100: Kconfigs and MakefilesByungho Min2009-08-161-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | ARM: S3C: CPUFREQ: Add debugfs support for cpufreqBen Dooks2009-07-301-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | ARM: Add S3C24XX to CPUFreq KConfigBen Dooks2009-07-301-0/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | ARM: Add ARCH_HAS_CPUFREQ for presence of CPUFREQ driverBen Dooks2009-07-301-1/+13
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | Merge branch 'for-rmk-2.6.32' of git://git.pengutronix.de/git/ukl/linux-2.6 ↵Russell King2009-08-151-113/+2
| |\ \ | | | | | | | | | | | | into devel-stable
| | * | [ARM] let arch/arm/Kconfig source drivers/KconfigUwe Kleine-König2009-08-131-101/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | Use kernel/Kconfig.preempt for ARMUwe Kleine-König2009-08-131-12/+1
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | nommu: Enables to select noMMU modeHyok S. Choi2009-07-241-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | MMU option is now selectable. Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com>
| * | Thumb-2: Add Thumb-2 support to the build filesCatalin Marinas2009-07-241-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | Thumb-2: Add macros for the unified assembler syntaxCatalin Marinas2009-07-241-0/+3
| |/ | | | | | | | | | | | | | | 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>
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*-----. \ Merge branches 'arm', 'at91', 'bcmring', 'ep93xx', 'mach-types', 'misc' and ↵Russell King2009-09-121-2/+29
|\ \ \ \ \ | | |_|_|/ | |/| | | | | | | | 'w90x900' into devel
| | | | * ARM: 5676/1: Provide more useful introduction for w90x900wanzongshun2009-08-151-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | | | * ARM: 5674/1: Add clocksource/clockevent support for w90p910 platformwanzongshun2009-08-151-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | | | * [ARM] 5601/1: Add HAVE_CLK depends on for w90p910 platformwanzongshun2009-07-171-0/+1
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | 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>
| | | * ARM: implement highpteRussell King2009-08-171-0/+5
| | |/ | |/| | | | | | | | | | | | | | | | | | | 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>
| | * ARM: 5641/1: bcmring: add Kconfig and Makefile entries in arch/armLeo Chen2009-08-151-0/+14
| |/ | | | | | | | | | | | | | | 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>
* | [ARM] realview: add PL061 gpiolib supportRussell King2009-07-061-0/+1
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] versatile: add PL061 gpiolib supportRussell King2009-07-061-0/+1
|/ | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] S3C64XX: Initial support for DVFSMark Brown2009-06-161-1/+5
| | | | | | | | | | | | | | | | | | 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>
* Merge branch 'u300' into develRussell King2009-06-141-0/+16
|\ | | | | | | | | | | | | | | Conflicts: arch/arm/Makefile Updates: arch/arm/mach-u300/core.c arch/arm/mach-u300/timer.c
| * [ARM] 5480/1: U300-v5 integrate into the ARM architectureLinus Walleij2009-04-281-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | Merge branch 'stmp' into develRussell King2009-06-141-0/+15
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| * | [ARM] 5483/1: Freescale STMP: add Kconfig/Makefile entriesdmitry pervushin2009-04-271-0/+15
| |/ | | | | | | | | | | | | 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>
* | Merge branch 'copy_user' of git://git.marvell.com/orion into develRussell King2009-06-141-0/+16
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| * | [ARM] alternative copy_to_user/clear_user implementationLennert Buytenhek2009-05-291-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | | Merge branch 'for-rmk' of git://linux-arm.org/linux-2.6 into develRussell King2009-06-111-3/+5
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/arm/Kconfig arch/arm/kernel/smp.c arch/arm/mach-realview/Makefile arch/arm/mach-realview/platsmp.c
| * | | RealView: Allow CONFIG_LEDS on this platformColin Tuckley2009-05-301-1/+1
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Colin Tuckley <Colin.Tuckley@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | | RealView: Add support for the RealView/PBX platformColin Tuckley2009-05-301-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | | RealView: Allow SMP when the Cortex-A9 tile is enabled for EBCatalin Marinas2009-05-301-1/+1
| |/ / | | | | | | | | | Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* | | Merge branch 'w90x900' into develRussell King2009-06-111-0/+3
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