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2012-01-25ARM: 7298/1: realview: fix mapping of MPCore private memory regionMarc Zyngier4-25/+19
Since commit 0536bdf33faf (ARM: move iotable mappings within the vmalloc region), the RealView PB11MP cannot boot anymore. This is caused by the way the mappings are described on this platform (define replaced by hex values for clarity): { /* GIC CPU interface mapping */ .virtual = IO_ADDRESS(0x1F000100), .pfn = __phys_to_pfn(0x1F000100), .length = SZ_4K, .type = MT_DEVICE, }, { /* GIC distributor mapping */ .virtual = IO_ADDRESS(0x1F001000), .pfn = __phys_to_pfn(0x1F001000), .length = SZ_4K, .type = MT_DEVICE, } The first mapping ends up reserving two pages, and clashes with the second one, which triggers a BUG_ON in vm_area_add_early(). In order to solve this problem, treat the MPCore private memory region (containing the SCU, the GIC and the TWD) as a single region, as described in the TRM: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0360f/CACGDJJC.html The EB11MP is converted the same way, even if it manages to avoid the problem. Tested on both PB11MP and EB11MP. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-23ARM: 7293/1: logical_cpu_map: decouple CPU mapping from SMPWill Deacon1-0/+1
It turns out that the logical CPU mapping is useful even when !CONFIG_SMP for manipulation of devices like interrupt and power controllers when running a UP kernel on a CPU other than 0. This can happen when kexecing a UP image from an SMP kernel. In the future, multi-cluster systems running AMP configurations will require something similar for mapping cluster IDs, so it makes sense to decouple this logic in preparation for this support. Acked-by: Yang Bai <hamo.by@gmail.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Reported-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-17Merge branch 'fixes-for-arm-soc' of git://sources.calxeda.com/kernel/linux ↵Olof Johansson1-2/+1
into fixes * 'fixes-for-arm-soc' of git://sources.calxeda.com/kernel/linux: ARM: make BSYM macro assembly only ARM: highbank: remove incorrect BSYM usage ARM: imx: remove incorrect BSYM usage ARM: exynos: remove incorrect BSYM usage ARM: ux500: add missing ENDPROC to headsmp.S ARM: msm: Add missing ENDPROC to headsmp.S ARM: versatile: Add missing ENDPROC to headsmp.S
2012-01-16ARM: versatile: Add missing ENDPROC to headsmp.SPawel Moll1-2/+1
Once the ENDPROC is in place, BSYM() in not longer necessary to get correct pointer to versatile_secondary_startup(). Tested-by: Jon Medhurst <tixy@linaro.org> Signed-off-by: Pawel Moll <pawel.moll@arm.com> Acked-by: Dave Martin <dave.martin@linaro.org>
2012-01-15Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds5-15/+0
2nd round of GPIO changes for v3.3 merge window * tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6: GPIO: sa1100: implement proper gpiolib gpio_to_irq conversion gpio: pl061: remove combined interrupt gpio: pl061: convert to use generic irq chip GPIO: add bindings for managed devices ARM: realview: convert pl061 no irq to 0 instead of -1 gpio: pl061: convert to use 0 for no irq gpio: pl061: use chained_irq_* functions in irq handler GPIO/pl061: Add suspend resume capability drivers/gpio/gpio-tegra.c: use devm_request_and_ioremap
2012-01-08Merge branch 'driver-core-next' of ↵Linus Torvalds6-6/+6
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core * 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (73 commits) arm: fix up some samsung merge sysdev conversion problems firmware: Fix an oops on reading fw_priv->fw in sysfs loading file Drivers:hv: Fix a bug in vmbus_driver_unregister() driver core: remove __must_check from device_create_file debugfs: add missing #ifdef HAS_IOMEM arm: time.h: remove device.h #include driver-core: remove sysdev.h usage. clockevents: remove sysdev.h arm: convert sysdev_class to a regular subsystem arm: leds: convert sysdev_class to a regular subsystem kobject: remove kset_find_obj_hinted() m86k: gpio - convert sysdev_class to a regular subsystem mips: txx9_sram - convert sysdev_class to a regular subsystem mips: 7segled - convert sysdev_class to a regular subsystem sh: dma - convert sysdev_class to a regular subsystem sh: intc - convert sysdev_class to a regular subsystem power: suspend - convert sysdev_class to a regular subsystem power: qe_ic - convert sysdev_class to a regular subsystem power: cmm - convert sysdev_class to a regular subsystem s390: time - convert sysdev_class to a regular subsystem ... Fix up conflicts with 'struct sysdev' removal from various platform drivers that got changed: - arch/arm/mach-exynos/cpu.c - arch/arm/mach-exynos/irq-eint.c - arch/arm/mach-s3c64xx/common.c - arch/arm/mach-s3c64xx/cpu.c - arch/arm/mach-s5p64x0/cpu.c - arch/arm/mach-s5pv210/common.c - arch/arm/plat-samsung/include/plat/cpu.h - arch/powerpc/kernel/sysfs.c and fix up cpu_is_hotpluggable() as per Greg in include/linux/cpu.h
2012-01-05Merge branch 'restart' into for-linusRussell King7-28/+15
Conflicts: arch/arm/mach-exynos/cpu.c The changes to arch/arm/mach-exynos/cpu.c were moved to mach-exynos/common.c.
2012-01-05ARM: restart: remove the now empty arch_reset()Russell King1-4/+0
Remove the now empty arch_reset() from all the mach/system.h includes, and remove its callsite. Remove arm_machine_restart() as this function no longer does anything useful. For samsung platforms, remove the include of mach/system-reset.h and plat/system-reset.h from their respective mach/system.h headers as these just define their arch_reset functions. As a result, the s3c2410 and plat-samsung system-reset.h files are no longer referenced, so remove these files entirely. Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Jamie Iles <jamie@jamieiles.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-05ARM: restart: realview: use new restart hookRussell King7-24/+15
Hook these platforms restart code into the new restart hook rather than using arch_reset(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-04ARM: realview: convert pl061 no irq to 0 instead of -1Rob Herring5-15/+0
Drivers should use 0 for no irq, so convert realview platforms pl061 platform_data over to use 0. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Cc: Russell King <linux@arm.linux.org.uk>
2011-12-22driver-core: remove sysdev.h usage.Kay Sievers6-6/+6
The sysdev.h file should not be needed by any in-kernel code, so remove the .h file from these random files that seem to still want to include it. The sysdev code will be going away soon, so this include needs to be removed no matter what. Cc: Jiandong Zheng <jdzheng@broadcom.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: David Brown <davidb@codeaurora.org> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Wan ZongShun <mcuos.com@gmail.com> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: "Venkatesh Pallipadi Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Matthew Garrett <mjg@redhat.com> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
2011-12-20Merge branch 'arm/common-kconfig-refactor+for-rmk' of ↵Russell King1-0/+9
git://git.linaro.org/people/dmart/linux-2.6-arm into devel-stable
2011-12-19ARM: SMP: Refactor Kconfig to be more maintainableDave Martin1-0/+4
Making SMP depend on (huge list of MACH_ and ARCH_ configs) is bothersome to maintain and likely to lead to merge conflicts. This patch moves the knowledge of which platforms are SMP-capable to the individual machines. To enable this, a new HAVE_SMP config option is introduced to allow machines to indicate that they can run in a SMP configuration. Signed-off-by: Dave Martin <dave.martin@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> (for nomadik, ux500) Acked-by: Tony Lindgren <tony@atomide.com> (for omap) Acked-by: Kukjin Kim <kgene.kim@samsung.com> (for exynos) Acked-by: Sascha Hauer <s.hauer@pengutronix.de> (for imx) Acked-by: Olof Johansson <olof@lixom.net> (for tegra)
2011-12-19ARM: l2x0/pl310: Refactor Kconfig to be more maintainableDave Martin1-0/+5
Making CACHE_L2X0 depend on (huge list of MACH_ and ARCH_ configs) is bothersome to maintain and likely to lead to merge conflicts. This patch moves the knowledge of which platforms have a L2x0 or PL310 cache controller to the individual machines. To enable this, a new MIGHT_HAVE_CACHE_L2X0 config option is introduced to allow machines to indicate that they may have such a cache controller independently of each other. Boards/SoCs which cannot reliably operate without the L2 cache controller support will need to select CACHE_L2X0 directly from their own Kconfigs instead. This applies to some TrustZone-enabled boards where Linux runs in the Normal World, for example. Signed-off-by: Dave Martin <dave.martin@linaro.org> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> (for cns3xxx) Acked-by: Tony Lindgren <tony@atomide.com> (for omap) Acked-by: Shawn Guo <shawn.guo@linaro.org> (for imx) Acked-by: Kukjin Kim <kgene.kim@samsung.com> (for exynos) Acked-by: Sascha Hauer <s.hauer@pengutronix.de> (for imx) Acked-by: Olof Johansson <olof@lixom.net> (for tegra)
2011-12-06Merge branch 'vmalloc' of git://git.linaro.org/people/nico/linux into ↵Russell King3-25/+4
devel-stable
2011-11-27ARM: big removal of now unused vmalloc.h filesNicolas Pitre1-21/+0
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-11-18ARM: realview-eb11mp: fix map_desc alignmentRob Herring1-2/+2
REALVIEW_EB11MP_GIC_CPU_BASE is not 4KB aligned which causes an overlapping mapping. Use REALVIEW_EB11MP_SCU_BASE instead which is aligned. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-11-18ARM: realview: fix map_desc alignmentRob Herring1-2/+2
REALVIEW_PBX_TILE_GIC_CPU_BASE is not 4KB aligned which causes an overlapping mapping. Use REALVIEW_PBX_TILE_SCU_BASE instead which is aligned. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-11-15ARM: RealView: convert to CONFIG_MULTI_IRQ_HANDLERMarc Zyngier6-2/+5
Convert the RealView platforms to be using the gic_handle_irq function as their primary interrupt handler. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2011-11-02Merge branch 'next/cross-platform' of git://git.linaro.org/people/arnd/arm-socLinus Torvalds2-16/+3
* 'next/cross-platform' of git://git.linaro.org/people/arnd/arm-soc: arm/imx: use Kconfig choice for low-level debug UART selection ARM: realview: use Kconfig choice for debug UART selection ARM: plat-samsung: use Kconfig choice for debug UART selection ARM: versatile: convert logical CPU numbers to physical numbers ARM: ux500: convert logical CPU numbers to physical numbers ARM: shmobile: convert logical CPU numbers to physical numbers ARM: msm: convert logical CPU numbers to physical numbers ARM: exynos4: convert logical CPU numbers to physical numbers Fix up trivial conflict (config DEBUG_S3C_UART move/split vs addition of ARM_KPROBES_TEST option) in arch/arm/Kconfig.debug
2011-10-28Merge branch 'devel-stable' of ↵Linus Torvalds6-6/+6
http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm * 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (178 commits) ARM: 7139/1: fix compilation with CONFIG_ARM_ATAG_DTB_COMPAT and large TEXT_OFFSET ARM: gic, local timers: use the request_percpu_irq() interface ARM: gic: consolidate PPI handling ARM: switch from NO_MACH_MEMORY_H to NEED_MACH_MEMORY_H ARM: mach-s5p64x0: remove mach/memory.h ARM: mach-s3c64xx: remove mach/memory.h ARM: plat-mxc: remove mach/memory.h ARM: mach-prima2: remove mach/memory.h ARM: mach-zynq: remove mach/memory.h ARM: mach-bcmring: remove mach/memory.h ARM: mach-davinci: remove mach/memory.h ARM: mach-pxa: remove mach/memory.h ARM: mach-ixp4xx: remove mach/memory.h ARM: mach-h720x: remove mach/memory.h ARM: mach-vt8500: remove mach/memory.h ARM: mach-s5pc100: remove mach/memory.h ARM: mach-tegra: remove mach/memory.h ARM: plat-tcc: remove mach/memory.h ARM: mach-mmp: remove mach/memory.h ARM: mach-cns3xxx: remove mach/memory.h ... Fix up mostly pretty trivial conflicts in: - arch/arm/Kconfig - arch/arm/include/asm/localtimer.h - arch/arm/kernel/Makefile - arch/arm/mach-shmobile/board-ap4evb.c - arch/arm/mach-u300/core.c - arch/arm/mm/dma-mapping.c - arch/arm/mm/proc-v7.S - arch/arm/plat-omap/Kconfig largely due to some CONFIG option renaming (ie CONFIG_PM_SLEEP -> CONFIG_ARM_CPU_SUSPEND for the arm-specific suspend code etc) and addition of NEED_MACH_MEMORY_H next to HAVE_IDE.
2011-10-27Merge branch 'gpio' of ↵Linus Torvalds1-6/+1
http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm * 'gpio' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (43 commits) ARM: 7135/1: ep93xx: bring back missing <mach/gpio.h> ARM: 7104/1: plat-pxa: break out GPIO driver specifics ARM: 7103/1: plat-pxa: move PXA GPIO driver to GPIO subsystem ARM: 7042/3: mach-ep93xx: break out GPIO driver specifics ARM: 7101/1: arm/tegra: Replace <mach/gpio.h> with <mach/gpio-tegra.h> ARM: 7094/1: arm/tegra: Move EN_VDD_1V05_GPIO to board-harmony.h ARM: 7083/1: rewrite U300 GPIO to use gpiolib ARM: 7074/1: gpio: davinci: eliminate unused variable warnings ARM: 7063/1: Orion: gpio: add missing include of linux/types.h ARM: 7055/1: arm/tegra: mach/gpio.h: include linux/types.h to fix build ARM: 7054/1: arm/tegra: Delete custom gpio_to_irq, and irq_to_gpio ARM: 7053/1: gpio/tegra: Implement gpio_chip.to_irq ARM: 7052/1: gpio/tegra: Remove use of irq_to_gpio ARM: 7057/1: mach-pnx4008: rename GPIO header ARM: 7056/1: plat-nomadik: kill off <plat/gpio.h> ARM: 7050/1: mach-sa1100: delete irq_to_gpio() function ARM: 7049/1: mach-sa1100: move SA1100 GPIO driver to GPIO subsystem ARM: 7045/1: mach-lpc32xx: break out GPIO driver specifics ARM: 7044/1: mach-lpc32xx: move LPC32XX GPIO driver to GPIO subsystem ARM: 7043/1: mach-ixp2000: rename GPIO header ... Fix up trivial conflicts in arch/arm/mach-u300/Kconfig manually
2011-10-25Merge branch 'misc' into for-linusRussell King6-19/+47
Conflicts: arch/arm/mach-integrator/integrator_ap.c
2011-10-23Merge branch 'ppi-irq-core-for-rmk' of ↵Russell King1-6/+4
git://github.com/mzyngier/arm-platforms into devel-stable
2011-10-21ARM: smp: fix clipping of number of CPUsRussell King1-6/+4
Rather than clipping the number of CPUs using the compile-time NR_CPUS constant, use the runtime nr_cpu_ids value instead. This allows the nr_cpus command line option to work as expected. Cc: <stable@kernel.org> Reported-by: Mark Salter <msalter@redhat.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-20Merge branches 'cross-platform/debug_ll' and 'cross-platform/cpu-mapping' ↵Arnd Bergmann1-1/+1
into next/cross-platform
2011-10-18Merge branch 'mach_memory_h' of git://git.linaro.org/people/nico/linux into ↵Russell King1-1/+1
devel-stable
2011-10-17ARM: realview: use Kconfig choice for debug UART selectionWill Deacon1-15/+2
Now that the DEBUG_LL UART can be selected by a Kconfig choice, simplify the #ifdefery in debug-macro.S and add entries to the top-level Kconfig.debug instead. Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-10-17ARM: versatile: convert logical CPU numbers to physical numbersWill Deacon1-1/+1
This patch uses the new cpu_logical_map() macro for converting logical CPU numbers into physical numbers when dealing with the pen_release variable in the SMP boot and CPU hotplug paths. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-10-17ARM: 6217/4: mach-realview: expose PB1176 ROM using physmap and map_romLinus Walleij2-8/+38
This exposes the PB1176 ROM if you compile in the MTD physmap mapping and also the map_rom chiptype. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-17ARM: platform fixups: remove mdesc argument to fixup functionRussell King4-9/+7
Get rid of the mdesc pointer in the fixup function call. No one uses the mdesc pointer, it shouldn't be modified anyway, and we can't wrap it, so let's remove it. Platform files found by: $ regexp=$(git grep -h '\.fixup.*=' arch/arm | sed 's!.*= *\([^,]*\),* *!\1!' | sort -u | tr '\n' '|' | sed 's,|$,,;s,|,\\|,g') $ git grep $regexp arch/arm Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-17ARM: 7022/1: allow to detect conflicting zreladdrsSascha Hauer1-2/+2
Boards used to specify zreladdr in their Makefile.boot with zreladdr-y := x, so conflicting zreladdrs were silently overwritten. This patch changes this to zreladdr-y += x, so that we end up with multiple words in zreladdr in such a case. We can detect this later and complain if necessary. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-09-26ARM: add an extra temp register to the low level debugging addruart macroNicolas Pitre1-1/+1
Some platforms (like OMAP not to name it) are doing rather complicated hacks just to determine the base UART address to use. Let's give their addruart macro some slack by providing an extra work register which will allow for much needed cleanups. This is basically a no-op as this commit is only adding the extra argument to the macro but no one is using it yet. Signed-off-by: nicolas Pitre <nicolas.pitre@linaro.org> Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-09-17Merge branch 'for-rmk' of git://linux-arm.org/linux-2.6-wd into devel-stableRussell King1-0/+1
Conflicts: arch/arm/mach-imx/mach-cpuimx27.c
2011-08-22ARM: mach-realview: convert boot_params to atag_offsetNicolas Pitre5-5/+5
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-08-12ARM: realview: ensure visibility of writes during resetWill Deacon1-0/+1
The various reset routines in mach-realview rely on an FPGA to power-cycle the board after writing some magic runes to memory-mapped registers. This patch adds a dsb() following the writes, so that they become visible before we mdelay(1000) in the arch_reset code. Without this patch, the timeout would expire sporadically, causing the reset to fail. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-08-12ARM: gpio: make trivial GPIOLIB implementation the defaultRussell King1-1/+1
Rather than marking the mach/gpio.h header files which want to use the trivial GPIOLIB implementation, mark those which do not want to use it instead. This means that by default, you get the trivial implementation and only have to do something extra if you need to. This should encourage the use of the trivial default implementation. As an additional bonus, several gpio.h header files become empty. Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Tested-by: Jamie Iles <jamie@jamieiles.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-12ARM: gpio: consolidate gpio_to_irqRussell King1-1/+0
Many of the gpio_to_irq implementations use the gpiolib version of this function. Provide the standard gpiolib gpio_to_irq() for everyone, but allow platforms to override it if they wish. Add the neccessary overrides for those platforms which do not use the standard definition. Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-12ARM: gpio: consolidate trivial gpiolib implementationsRussell King1-5/+1
Consolidate 24 trivial gpiolib implementions out of mach/gpio.h into asm/gpio.h. This is basically the include of asm-generic/gpio.h and the definition of gpio_get_value, gpio_set_value, and gpio_cansleep as described in Documentation/gpio.txt Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Tested-by: David Brown <davidb@codeaurora.org> Acked-by: David Brown <davidb@codeaurora.org> Tested-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-23Merge branch 'devel-stable' into for-nextRussell King6-4/+15
Conflicts: arch/arm/kernel/entry-armv.S
2011-07-18ARM: mach-realview: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_sizeNicolas Pitre6-4/+15
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-07-07ARM: 6993/1: platsmp: Allow secondary cpu hotplug with maxcpus=1Stephen Boyd1-8/+0
If an ARM system has multiple cpus in the same socket and the kernel is booted with maxcpus=1, secondary cpus are possible but not present due to how platform_smp_prepare_cpus() is called. Since most typical ARM processors don't actually support physical hotplug, initialize the present map to be equal to the possible map in generic ARM SMP code. Also, always call platform_smp_prepare_cpus() as long as max_cpus is non-zero (0 means no SMP) to allow platform code to do any SMP setup. After applying this patch it's possible to boot an ARM system with maxcpus=1 on the command line and then hotplug in secondary cpus via sysfs. This is more in line with how x86 does things. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: David Brown <davidb@codeaurora.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-06ARM: 6986/1: mach-realview: add TCM support for PB1176Linus Walleij1-0/+1
Enable TCM support on the RealView PB1176 - we have now taken the precautions necessary to support even multi-board builds of RealView systems with TCM enabled. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23Merge branches 'consolidate-clksrc', 'consolidate-flash', ↵Russell King4-67/+9
'consolidate-generic', 'consolidate-smp', 'consolidate-stmp' and 'consolidate-zones' into consolidate
2011-05-23clockevents: ARM sp804: allow clockevent name to be specifiedRussell King1-1/+1
This allows platforms to specify the clcokevent name upon registration. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23clocksource: ARM sp804: obtain sp804 timer rate via clksRussell King1-1/+8
This allows platforms to specify the rate of the SP804 clocksource via the clk subsystem. While ARM boards clock these at 1MHz, BCMRing also has SP804 timers but are clocked at different rates. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23clocksource: ARM sp804: allow clocksource name to be specifiedRussell King1-1/+1
This allows platforms to specify the clocksource name upon registration, which is necessary should they wish to register more than one sp804 clocksource. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23ARM: consolidate SMP cross call implementationRussell King2-14/+3
Rather than having each platform class provide a mach/smp.h header for smp_cross_call(), arrange for them to register the function with the core ARM SMP code instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-21ARM: 6910/1: MTD: physmap: let set_vpp() pass a platform_device instead of a ↵Marc Zyngier1-1/+1
map_info The set_vpp() method provided by physmap passes a map_info back to the platform code, which has little relevance as far as the platform is concerned (this parameter is completely unused). Instead, pass the platform_device, which can be used in the pismo driver to retrieve some important information in a nicer way, instead of the hack that was in place. The empty set_vpp function in board-at572d940hf_ek.c is left untouched, as the board/SoC is scheduled for removal. Cc: Andrew Victor <linux@maxim.org.za> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Ben Dooks <ben-linux@fluff.org> Acked-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-21ARM: 6903/1: Realview: Use physmap driver instead of integrator-flashMarc Zyngier1-27/+4
Tested on a PB11-MPCore. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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