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2016-03-21Merge tag 'armsoc-soc' of ↵Linus Torvalds1-0/+9
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform updates from Arnd Bergmann: "Newly added support for additional SoCs: - Axis Artpec-6 SoC family - Allwinner A83T SoC - Mediatek MT7623 - NXP i.MX6QP SoC - ST Microelectronics stm32f469 microcontroller New features: - SMP support for Mediatek mt2701 - Big-endian support for NXP i.MX - DaVinci now uses the new DMA engine dma_slave_map - OMAP now uses the new DMA engine dma_slave_map - earlyprintk support for palmchip uart on mach-tango - delay timer support for orion Other: - Exynos PMU driver moved out to drivers/soc/ - Various smaller updates for Renesas, Xilinx, PXA, AT91, OMAP, uniphier" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits) ARM: uniphier: rework SMP code to support new System Bus binding ARM: uniphier: add missing of_node_put() ARM: at91: avoid defining CONFIG_* symbols in source code ARM: DRA7: hwmod: Add data for eDMA tpcc, tptc0, tptc1 ARM: imx: Make reset_control_ops const ARM: imx: Do L2 errata only if the L2 cache isn't enabled ARM: imx: select ARM_CPU_SUSPEND only for imx6 dmaengine: pxa_dma: fix the maximum requestor line ARM: alpine: select the Alpine MSI controller driver ARM: pxa: add the number of DMA requestor lines dmaengine: mmp-pdma: add number of requestors dma: mmp_pdma: Add the #dma-requests DT property documentation ARM: OMAP2+: Add rtc hwmod configuration for ti81xx ARM: s3c24xx: Avoid warning for inb/outb ARM: zynq: Move early printk virtual address to vmalloc area ARM: DRA7: hwmod: Add custom reset handler for PCIeSS ARM: SAMSUNG: Remove unused register offset definition ARM: EXYNOS: Cleanup header files inclusion drivers: soc: samsung: Enable COMPILE_TEST MAINTAINERS: Add maintainers entry for drivers/soc/samsung ...
2016-03-21Merge tag 'armsoc-cleanup' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC cleanups from Arnd Bergmann: "A few simple cleanups across multiple platforms, not much standing out: - lpc32xx removes its private implementation of the clk API, after generic code was merged in 4.5 - all unused Makefile.boot files get removed - a number of simplifications for shmobile - asm/clkdev.h gets replaced with the asm-generic version after all mach/clkdev.h implementations are gone" * tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: shmobile: Kconfig: Get rid of old comment ARM: shmobile: Consolidate SCU mapping code arm: lpc32xx: remove direct control of GPIOs from shared mach file arm: lpc32xx: remove selected HAVE_IDE arm: lpc32xx: switch to common clock framework ARM: Use generic clkdev.h header ARM: plat-versatile: Remove unused clock.c file ARM: netx: remove redundant "depends on ARCH_NETX" ARM: integrator: remove redundant select in Kconfig ARM: drop unused Makefile.boot of Multiplatform SoCs ARM: mvebu: add missing of_node_put() ARM: shmobile: r8a7779: Remove remainings of removed SCU boot setup code ARM: shmobile: Typo s/MIPDR/MPIDR/ ARM: shmobile: Add includes providing forward declarations ARM: shmobile: rcar-gen2: Make rcar_gen2_dma_contiguous static ARM: mv78xx0: use "depends on" instead of "if" after prompt
2016-03-21Merge tag 'armsoc-fixes-nc' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC non-urgent fixes from Arnd Bergmann: "As usual, we queue up a few fixes that don't seem urgent enough to go in through -rc. - a number of randconfig warning fixes from Arnd - various small fixes for OMAP - one somewhat larger patch to restore the OMAP3 cpuidle tuning that was lost in a cleanup - a small regression fix for cns3xxx PCI" * tag 'armsoc-fixes-nc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (26 commits) CNS3xxx: Fix PCI cns3xxx_write_config() MAINTAINERS: unify email addrs for Kevin Hilman CNS3xxx: remove unused *_VIRT definitions ARM: OMAP2+: Fix hwmod clock for l4_ls soc: TI knav_qmss: fix dma_addr_t printing ARM: prima2: always enable reset controller ARM: socfpga: hide unused functions ARM: ux500: fix ureachable iounmap() ARM: ks8695: fix __initdata annotation ARM: mvebu: mark mvebu_hwcc_pci_nb as __maybe_unused ARM: mv78xx0: avoid unused function warning ARM: orion: only select I2C_BOARDINFO when using I2C ARM: OMAP2+: Fix out of range register access with syscon_config.max_register ARM: OMAP3: Add cpuidle parameters table for omap3430 ARM: davinci: make I2C support optional ARM: davinci: DA8xx+DMx combined kernels need PATCH_PHYS_VIRT ARM: davinci: avoid unused mityomapl138_pn_info variable ARM: davinci: limit DT support to DA850 ARM: DRA7: hwmod: Add reset data for PCIe ARM: DRA7: hwmod: Fix OCP2SCP sysconfig ...
2016-03-20Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-armLinus Torvalds1-3/+2
Pull ARM updates from Russell King: "Another mixture of changes this time around: - Split XIP linker file from main linker file to make it more maintainable, and various XIP fixes, and clean up a resulting macro. - Decompressor cleanups from Masahiro Yamada - Avoid printing an error for a missing L2 cache - Remove some duplicated symbols in System.map, and move vectors/stubs back into kernel VMA - Various low priority fixes from Arnd - Updates to allow bus match functions to return negative errno values, touching some drivers and the driver core. Greg has acked these changes. - Virtualisation platform udpates form Jean-Philippe Brucker. - Security enhancements from Kees Cook - Rework some Kconfig dependencies and move PSCI idle management code out of arch/arm into drivers/firmware/psci.c - ARM DMA mapping updates, touching media, acked by Mauro. - Fix places in ARM code which should be using virt_to_idmap() so that Keystone2 can work. - Fix Marvell Tauros2 to work again with non-DT boots. - Provide a delay timer for ARM Orion platforms" * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (45 commits) ARM: 8546/1: dma-mapping: refactor to fix coherent+cma+gfp=0 ARM: 8547/1: dma-mapping: store buffer information ARM: 8543/1: decompressor: rename suffix_y to compress-y ARM: 8542/1: decompressor: merge piggy.*.S and simplify Makefile ARM: 8541/1: decompressor: drop redundant FORCE in Makefile ARM: 8540/1: decompressor: use clean-files instead of extra-y to clean files ARM: 8539/1: decompressor: drop more unneeded assignments to "targets" ARM: 8538/1: decompressor: drop unneeded assignments to "targets" ARM: 8532/1: uncompress: mark putc as inline ARM: 8531/1: turn init_new_context into an inline function ARM: 8530/1: remove VIRT_TO_BUS ARM: 8537/1: drop unused DEBUG_RODATA from XIP_KERNEL ARM: 8536/1: mm: hide __start_rodata_section_aligned for non-debug builds ARM: 8535/1: mm: DEBUG_RODATA makes no sense with XIP_KERNEL ARM: 8534/1: virt: fix hyp-stub build for pre-ARMv7 CPUs ARM: make the physical-relative calculation more obvious ARM: 8512/1: proc-v7.S: Adjust stack address when XIP_KERNEL ARM: 8411/1: Add default SPARSEMEM settings ARM: 8503/1: clk_register_clkdev: remove format string interface ARM: 8529/1: remove 'i' and 'zi' targets ...
2016-03-08PCI: Include pci/pcie/Kconfig directly from pci/KconfigBogicevic Sasa1-1/+0
Include pci/pcie/Kconfig directly from pci/Kconfig, so arches don't have to source both pci/Kconfig and pci/pcie/Kconfig. Note that this effectively adds pci/pcie/Kconfig to the following arches, because they already sourced drivers/pci/Kconfig but they previously did not source drivers/pci/pcie/Kconfig: alpha avr32 blackfin frv m32r m68k microblaze mn10300 parisc sparc unicore32 xtensa [bhelgaas: changelog, source pci/pcie/Kconfig at top of pci/Kconfig, whitespace] Signed-off-by: Sasa Bogicevic <brutallesale@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-03-01Merge tag 'pxa-for-4.6' of https://github.com/rjarzmik/linux into next/socArnd Bergmann1-0/+1
Merge "pxa changes for v4.6 cycle" from Robert Jarzmik: This is a minor cycle with : - cleanup fixes from Arnd, mainly build oriented and sparse type ones - dma fixes for requestors above 32 (impacting mainly camera driver) - some minor cleanup on pxa3xx device-tree side * tag 'pxa-for-4.6' of https://github.com/rjarzmik/linux: dmaengine: pxa_dma: fix the maximum requestor line ARM: pxa: add the number of DMA requestor lines dmaengine: mmp-pdma: add number of requestors dma: mmp_pdma: Add the #dma-requests DT property documentation ARM: pxa: pxa3xx device-tree support cleanup ARM: pxa: don't select RFKILL if CONFIG_NET is disabled ARM: pxa: fix building without IWMMXT ARM: pxa: move extern declarations to pm.h ARM: pxa: always select one of the two CPU types ARM: pxa: don't select GPIO_SYSFS for MIOA701 ARM: pxa: mark unused eseries code as __maybe_unused ARM: pxa: mark spitz_card_pwr_ctrl as __maybe_unused ARM: pxa: define clock registers as __iomem
2016-02-25arm: initial machine port for artpec-6 SoCLars Persson1-0/+2
Basic machine port for the Artpec-6 SoC from Axis Communications. Signed-off-by: Lars Persson <larper@axis.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Olof Johansson <olof@lixom.net>
2016-02-22ARM: 8530/1: remove VIRT_TO_BUSArnd Bergmann1-1/+0
All drivers that are relevant for rpc or footbridge have stopped using virt_to_bus a while ago, so we can remove it and avoid some harmless randconfig warnings for drivers that we do not care about: drivers/atm/zatm.c: In function 'poll_rx': drivers/atm/zatm.c:401:18: warning: 'bus_to_virt' is deprecated [-Wdeprecated-declarations] skb = ((struct rx_buffer_head *) bus_to_virt(here[2]))->skb; FWIW, the remaining drivers using this are: ATM: firestream, zatm, ambassador, horizon ISDN: hisax/netjet V4L: STA2X11, zoran Net: Appletalk LTPC, Tulip DE4x5, Toshiba IrDA WAN: comtrol sv11, cosa, lanmedia, sealevel SCSI: DPT_I2O, buslogic VME: CA91C142 My best guess is that all of the above are so hopelessly obsolete that we are best off removing all of them form the kernel, but that can be done another time. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-02-17ARM: davinci: DA8xx+DMx combined kernels need PATCH_PHYS_VIRTArnd Bergmann1-0/+1
We already forbid that combination when AUTO_ZRELADDR is disabled, for the same reason that the two have their RAM at different physical addresses as seen from the CPU. This does the same change for PATCH_PHYS_VIRT: if you disable either of the options, Kconfig now enforces that you have to pick one or the other SoC family. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2016-02-11ARM: 8511/1: ARM64: kernel: PSCI: move PSCI idle management code to ↵Lorenzo Pieralisi1-1/+1
drivers/firmware ARM64 PSCI kernel interfaces that initialize idle states and implement the suspend API to enter them are generic and can be shared with the ARM architecture. To achieve that goal, this patch moves ARM64 PSCI idle management code to drivers/firmware, so that the interface to initialize and enter idle states can actually be shared by ARM and ARM64 arches back-ends. The ARM generic CPUidle implementation also requires the definition of a cpuidle_ops section entry for the kernel to initialize the CPUidle operations at boot based on the enable-method (ie ARM64 has the statically initialized cpu_ops counterparts for that purpose); therefore this patch also adds the required section entry on CONFIG_ARM for PSCI so that the kernel can initialize the PSCI CPUidle back-end when PSCI is the probed enable-method. On ARM64 this patch provides no functional change. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> [arch/arm64] Acked-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Jisheng Zhang <jszhang@marvell.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-02-11ARM: 8510/1: rework ARM_CPU_SUSPEND dependenciesLorenzo Pieralisi1-2/+2
The code enabled by the ARM_CPU_SUSPEND config option is used by kernel subsystems for purposes that go beyond system suspend so its config entry should be augmented to take more default options into account and avoid forcing its selection to prevent dependencies override. To achieve this goal, this patch reworks the ARM_CPU_SUSPEND config entry and updates its default config value (by adding the BL_SWITCHER option to it) and its dependencies (ARCH_SUSPEND_POSSIBLE), so that the symbol is still selected by default by the subsystems requiring it and at the same time enforcing the dependencies correctly. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-02-11arm: lpc32xx: remove selected HAVE_IDEVladimir Zapolskiy1-1/+0
NXP LPC32xx platform does not have any controller capable for disk drives, selection of HAVE_IDE is not needed. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
2016-02-11arm: lpc32xx: switch to common clock frameworkVladimir Zapolskiy1-1/+2
The change switches NXP LPC32xx platforms to LPC32xx clock driver powered by common clock framework, this obsoletes mach-lpc32xx/clock.o legacy clock driver and thus it is removed. Legacy timer driver mach-lpc32xx/timer.o strictly depends on legacy clock support, but fortunately an existing LPC32xx clock source and clock event driver completely replaces it, and thus it can be removed as well. Noticeably platform UART driver directly operates on LPC32xx source control block registers, remove this dependency to avoid overlapping with common clock framework driver, also this guarantees that UART is working expectedly. Tested-by: Sylvain Lemieux <slemieux@tycoint.com> Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
2016-02-01ARM: pxa: always select one of the two CPU typesArnd Bergmann1-0/+1
When all boards are disabled on PXA, we cannot build a kernel because no CPU gets selected: arch/arm/include/uapi/asm/swab.h:26:29: error: "__LINUX_ARM_ARCH__" is not defined [-Werror=undef] This is a bit annoying for compile-testing, so I'm adding a line that ensures that at all times, at least one of CPU_XSCALE or CPU_XSC3 is set and we can at least continue building. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
2016-01-27ARM: mach-stm32: Select pinctrlMaxime Coquelin1-0/+1
Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Patrice Chotard <patrice.chotard@st.com> Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
2016-01-27ARM: Kconfig: Introduce MACH_STM32F429 flagMaxime Coquelin1-0/+5
This patch introduces the MACH_STM32F429 to make possible to only select STM32F429 pinctrl driver. By default, all the MACH_STM32Fxxx flags will be set with STM32 defconfig. Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Linus Walleij <linux.walleij@linaro.org> Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
2016-01-21Merge branch 'akpm' (patches from Andrew)Linus Torvalds1-1/+0
Merge third patch-bomb from Andrew Morton: "I'm pretty much done for -rc1 now: - the rest of MM, basically - lib/ updates - checkpatch, epoll, hfs, fatfs, ptrace, coredump, exit - cpu_mask simplifications - kexec, rapidio, MAINTAINERS etc, etc. - more dma-mapping cleanups/simplifications from hch" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (109 commits) MAINTAINERS: add/fix git URLs for various subsystems mm: memcontrol: add "sock" to cgroup2 memory.stat mm: memcontrol: basic memory statistics in cgroup2 memory controller mm: memcontrol: do not uncharge old page in page cache replacement Documentation: cgroup: add memory.swap.{current,max} description mm: free swap cache aggressively if memcg swap is full mm: vmscan: do not scan anon pages if memcg swap limit is hit swap.h: move memcg related stuff to the end of the file mm: memcontrol: replace mem_cgroup_lruvec_online with mem_cgroup_online mm: vmscan: pass memcg to get_scan_count() mm: memcontrol: charge swap to cgroup2 mm: memcontrol: clean up alloc, online, offline, free functions mm: memcontrol: flatten struct cg_proto mm: memcontrol: rein in the CONFIG space madness net: drop tcp_memcontrol.c mm: memcontrol: introduce CONFIG_MEMCG_LEGACY_KMEM mm: memcontrol: allow to disable kmem accounting for cgroup2 mm: memcontrol: account "kmem" consumers in cgroup2 memory controller mm: memcontrol: move kmem accounting code to CONFIG_MEMCG mm: memcontrol: separate kmem code from legacy tcp accounting code ...
2016-01-21Merge tag 'armsoc-soc' of ↵Linus Torvalds1-0/+2
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform updates from Olof Johansson: "Updates for new platform support: - New platform: Tango4 from Sigma Designs. - Broadcom BCM2836 (Raspberry Pi 2 SoC) - Enable cpufreq on Freescale i.MX7D - Rockchip: SMP support for rk3036, general support for rk3228 - SMP support on Broadcom Kona and NSP - Cleanups for OMAP removing legacy IOMMU data + a bunch of misc fixes and tweaks for various platforms" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (46 commits) ARM: tango: Fix UP build issues ARM: tango: pass ARM arch level for smc.S ARM: bcm2835: Add Kconfig support for bcm2836 ARM: OMAP2+: Add support for dm814x and dra62x usb ARM: OMAP2+: Add mmc hwmod entries for dm814x ARM: OMAP2+: Update 81xx clock and power domains for default, active and sgx ARM: OMAP2+: Fix SoC detection for dra62x j5-eco ARM: tango4: Initial platform support ARM: bcm2835: Add a compat string for bcm2836 machine probe dt-bindings: Add root properties for Raspberry Pi 2 ARM: imx: select SRC for i.MX7 ARM: uniphier: select PINCTRL ARM: OMAP2+: Remove device creation for omap-pcm-audio ARM: OMAP1: Remove device creation for omap-pcm-audio ARM: rockchip: enable support for RK3228 SoCs ARM: rockchip: use const and __initconst for rk3036 smp_operations ARM: zynq: Select ARCH_HAS_RESET_CONTROLLER ARM: BCM: Add SMP support for Broadcom 4708 ARM: BCM: Add SMP support for Broadcom NSP ARM: BCM: Clean up SMP support for Broadcom Kona ...
2016-01-21Merge tag 'armsoc-multiplatform' of ↵Linus Torvalds1-103/+4
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC multiplatform code updates from Arnd Bergmann: "This branch is the culmination of 5 years of effort to bring the ARMv6 and ARMv7 platforms together such that they can all be enabled and boot the same kernel. It has been a tremendous amount of cleanup and refactoring by a huge number of people, and creation of several new (and major) subsystems to better abstract out all the platform details in an appropriate manner. The bulk of this branch is a large patchset from Arnd that brings several of the more minor and older platforms we have closer to multiplatform support. Among these are MMP, S3C64xx, Orion5x, mv78xx0 and realview Much of this is moving around header files from old mach directories, but there are also some cleanup patches of debug_ll (lowlevel debug per-platform options) and other parts. Linus Walleij also has some patchs to clean up the older ARM Realview platforms by finally introducing DT support, and Rob Herring has some for ARM Versatile which is now DT-only. Both of these platforms are now multiplatform. Finally, a couple of patches from Russell for Dove PMU, and a fix from Valentin Rothberg for Exynos ADC, which were rebased on top of the series to avoid conflicts" * tag 'armsoc-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (75 commits) ARM: realview: don't select SMP_ON_UP for UP builds ARM: s3c: simplify s3c_irqwake_{e,}intallow definition ARM: s3c64xx: fix pm-debug compilation iio: exynos-adc: fix irqf_oneshot.cocci warnings ARM: realview: build realview-dt SMP support only when used ARM: realview: select apropriate targets ARM: realview: clean up header files ARM: realview: make all header files local ARM: no longer make CPU targets visible separately ARM: integrator: use explicit core module options ARM: realview: enable multiplatform ARM: make default platform work for NOMMU ARM: debug-ll: move DEBUG_LL_UART_EFM32 to correct Kconfig location ARM: defconfig: use correct debug_ll settings ARM: versatile: convert to multi-platform ARM: versatile: merge mach code into a single file ARM: versatile: switch to DT only booting and remove legacy code ARM: versatile: add DT based PCI detection ARM: pxa: mark ezx structures as __maybe_unused ARM: pxa: mark raumfeld init functions as __maybe_unused ...
2016-01-21Merge tag 'armsoc-cleanup' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC cleanups from Olof Johansson: "A smallish number of general cleanup commits this release cycle. Some of these are minor tweaks: - shmobile change of binding for their GIC (using arm,pl390 now) - ARCH_RENESAS introduction - Misc other renesas updates There's also a couple of treewide commits from Masahiro Yamada cleaning up const/__initconst for SMP operation structs and a switch to using "depends on" instead of if-constructs on most of the Kconfig platform targets" * tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: staging: board: armadillo800eva: Use "arm,pl390" staging: board: kzm9d: Use "arm,pl390" ARM: shmobile: r8a7778 dtsi: Use "arm,pl390" for GIC ARM: shmobile: emev2 dtsi: Use "arm,pl390" for GIC ARM: shmobile: r8a7740 dtsi: Use "arm,pl390" for GIC ARM: shmobile: r7s72100 dtsi: Use "arm,pl390" for GIC ARM: use "depends on" for SoC configs instead of "if" after prompt ARM/clocksource: use automatic DT probing for ux500 PRCMU ARM: use const and __initconst for smp_operations ARM: hisi: do not export smp_operations structures ARM: mvebu: remove unused mach/gpio.h ARM: shmobile: Remove legacy mach/irqs.h ARM: shmobile: Introduce ARCH_RENESAS MAINTAINERS: Remove link to oss.renesas.com which is closed
2016-01-21dma-mapping: always provide the dma_map_ops based implementationChristoph Hellwig1-1/+0
Move the generic implementation to <linux/dma-mapping.h> now that all architectures support it and remove the HAVE_DMA_ATTR Kconfig symbol now that everyone supports them. [valentinrothberg@gmail.com: remove leftovers in Kconfig] Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: David Howells <dhowells@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Helge Deller <deller@gmx.de> Cc: James Hogan <james.hogan@imgtec.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Ley Foon Tan <lftan@altera.com> Cc: Mark Salter <msalter@redhat.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Steven Miao <realmz6@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Joerg Roedel <jroedel@suse.de> Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-16Kconfig: remove HAVE_LATENCYTOP_SUPPORTWill Deacon1-5/+0
As illustrated by commit a3afe70b83fd ("[S390] latencytop s390 support."), HAVE_LATENCYTOP_SUPPORT is defined by an architecture to advertise an implementation of save_stack_trace_tsk. However, as of 9212ddb5eada ("stacktrace: provide save_stack_trace_tsk() weak alias") a dummy implementation is provided if STACKTRACE=y. Given that LATENCYTOP already depends on STACKTRACE_SUPPORT and selects STACKTRACE, we can remove HAVE_LATENCYTOP_SUPPORT altogether. Signed-off-by: Will Deacon <will.deacon@arm.com> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: James Hogan <james.hogan@imgtec.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Helge Deller <deller@gmx.de> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-15arm: mm: support ARCH_MMAP_RND_BITSDaniel Cashman1-0/+9
arm: arch_mmap_rnd() uses a hard-code value of 8 to generate the random offset for the mmap base address. This value represents a compromise between increased ASLR effectiveness and avoiding address-space fragmentation. Replace it with a Kconfig option, which is sensibly bounded, so that platform developers may choose where to place this compromise. Keep 8 as the minimum acceptable value. [arnd@arndb.de: ARM: avoid ARCH_MMAP_RND_BITS for NOMMU] Signed-off-by: Daniel Cashman <dcashman@google.com> Cc: Russell King <linux@arm.linux.org.uk> Acked-by: Kees Cook <keescook@chromium.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Don Zickus <dzickus@redhat.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Heinrich Schuchardt <xypron.glpk@gmx.de> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: David Rientjes <rientjes@google.com> Cc: Mark Salyzyn <salyzyn@android.com> Cc: Jeff Vander Stoep <jeffv@google.com> Cc: Nick Kralevich <nnk@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Hector Marco-Gisbert <hecmargi@upv.es> Cc: Borislav Petkov <bp@suse.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-14Merge tag 'libnvdimm-for-4.5' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm updates from Dan Williams: "The bulk of this has appeared in -next and independently received a build success notification from the kbuild robot. The 'for-4.5/block- dax' topic branch was rebased over the weekend to drop the "block device end-of-life" rework that Al would like to see re-implemented with a notifier, and to address bug reports against the badblocks integration. There is pending feedback against "libnvdimm: Add a poison list and export badblocks" received last week. Linda identified some localized fixups that we will handle incrementally. Summary: - Media error handling: The 'badblocks' implementation that originated in md-raid is up-levelled to a generic capability of a block device. This initial implementation is limited to being consulted in the pmem block-i/o path. Later, 'badblocks' will be consulted when creating dax mappings. - Raw block device dax: For virtualization and other cases that want large contiguous mappings of persistent memory, add the capability to dax-mmap a block device directly. - Increased /dev/mem restrictions: Add an option to treat all io-memory as IORESOURCE_EXCLUSIVE, i.e. disable /dev/mem access while a driver is actively using an address range. This behavior is controlled via the new CONFIG_IO_STRICT_DEVMEM option and can be overridden by the existing "iomem=relaxed" kernel command line option. - Miscellaneous fixes include a 'pfn'-device huge page alignment fix, block device shutdown crash fix, and other small libnvdimm fixes" * tag 'libnvdimm-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (32 commits) block: kill disk_{check|set|clear|alloc}_badblocks libnvdimm, pmem: nvdimm_read_bytes() badblocks support pmem, dax: disable dax in the presence of bad blocks pmem: fail io-requests to known bad blocks libnvdimm: convert to statically allocated badblocks libnvdimm: don't fail init for full badblocks list block, badblocks: introduce devm_init_badblocks block: clarify badblocks lifetime badblocks: rename badblocks_free to badblocks_exit libnvdimm, pmem: move definition of nvdimm_namespace_add_poison to nd.h libnvdimm: Add a poison list and export badblocks nfit_test: Enable DSMs for all test NFITs md: convert to use the generic badblocks code block: Add badblock management for gendisks badblocks: Add core badblock management code block: fix del_gendisk() vs blkdev_ioctl crash block: enable dax for raw block devices block: introduce bdev_file_inode() restrict /dev/mem to idle io memory ranges arch: consolidate CONFIG_STRICT_DEVM in lib/Kconfig.debug ...
2016-01-13Merge tag 'for-linus-4.5-rc0-tag' of ↵Linus Torvalds1-0/+20
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from David Vrabel: "Xen features and fixes for 4.5-rc0: - Stolen ticks and PV wallclock support for arm/arm64 - Add grant copy ioctl to gntdev device" * tag 'for-linus-4.5-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/gntdev: add ioctl for grant copy x86/xen: don't reset vcpu_info on a cancelled suspend xen/gntdev: constify mmu_notifier_ops structures xen/grant-table: constify gnttab_ops structure xen/time: use READ_ONCE xen/x86: convert remaining timespec to timespec64 in xen_pvclock_gtod_notify xen/x86: support XENPF_settime64 xen/arm: set the system time in Xen via the XENPF_settime64 hypercall xen/arm: introduce xen_read_wallclock arm: extend pvclock_wall_clock with sec_hi xen: introduce XENPF_settime64 xen/arm: introduce HYPERVISOR_platform_op on arm and arm64 xen: rename dom0_op to platform_op xen/arm: account for stolen ticks arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops missing include asm/paravirt.h in cputime.c xen: move xen_setup_runstate_info and get_runstate_snapshot to drivers/xen/time.c
2016-01-12Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-armLinus Torvalds1-5/+45
Pull ARM updates from Russell King: - UEFI boot and runtime services support for ARM from Ard Biesheuvel and Roy Franz. - DT compatibility with old atags booting protocol for Nokia N900 devices from Ivaylo Dimitrov. - PSCI firmware interface using new arm-smc calling convention from Jens Wiklander. - Runtime patching for udiv/sdiv instructions for ARMv7 CPUs that support these instructions from Nicolas Pitre. - L2x0 cache updates from Dirk B and Linus Walleij. - Randconfig fixes from Arnd Bergmann. - ARMv7M (nommu) updates from Ezequiel Garcia * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (34 commits) ARM: 8481/2: drivers: psci: replace psci firmware calls ARM: 8480/2: arm64: add implementation for arm-smccc ARM: 8479/2: add implementation for arm-smccc ARM: 8478/2: arm/arm64: add arm-smccc ARM: 8494/1: mm: Enable PXN when running non-LPAE kernel on LPAE processor ARM: 8496/1: OMAP: RX51: save ATAGS data in the early boot stage ARM: 8495/1: ATAGS: move save_atags() to arch/arm/include/asm/setup.h ARM: 8452/3: PJ4: make coprocessor access sequences buildable in Thumb2 mode ARM: 8482/1: l2x0: make it possible to disable outer sync from DT ARM: 8488/1: Make IPI_CPU_BACKTRACE a "non-secure" SGI ARM: 8487/1: Remove IPI_CALL_FUNC_SINGLE ARM: 8485/1: cpuidle: remove cpu parameter from the cpuidle_ops suspend hook ARM: 8484/1: Documentation: l2c2x0: Mention separate controllers explicitly ARM: 8483/1: Documentation: l2c: Rename l2cc to l2c2x0 ARM: 8477/1: runtime patch udiv/sdiv instructions into __aeabi_{u}idiv() ARM: 8476/1: VDSO: use PTR_ERR_OR_ZERO for vma check ARM: 8453/2: proc-v7.S: don't locate temporary stack space in .text section ARM: add UEFI stub support ARM: wire up UEFI init and runtime support ARM: only consider memblocks with NOMAP cleared for linear mapping ...
2016-01-12Merge branch 'devel-stable' into for-linusRussell King1-0/+20
2016-01-12Merge branches 'timers-core-for-linus' and 'timers-urgent-for-linus' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer updates - and a leftover fix - from Thomas Gleixner: "A rather large (commit wise) update from the timer side: - A bulk update to make compile tests work in the clocksource drivers - An overhaul of the h8300 timers - Some more Y2038 work - A few overflow prevention checks in the timekeeping/ntp code - The usual pile of fixes and improvements to the various clocksource/clockevent drivers and core code" Also: "A single fix for the posix-clock poll code which did not make it into 4.4" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (84 commits) clocksource/drivers/acpi_pm: Convert to pr_* macros clocksource: Make clocksource validation work for all clocksources timekeeping: Cap adjustments so they don't exceed the maxadj value ntp: Fix second_overflow's input parameter type to be 64bits ntp: Change time_reftime to time64_t and utilize 64bit __ktime_get_real_seconds timekeeping: Provide internal function __ktime_get_real_seconds clocksource/drivers/h8300: Use ioread / iowrite clocksource/drivers/h8300: Initializer cleanup. clocksource/drivers/h8300: Simplify delta handling clocksource/drivers/h8300: Fix timer not overflow case clocksource/drivers/h8300: Change to overflow interrupt clocksource/drivers/lpc32: Correct pr_err() output format clocksource/drivers/arm_global_timer: Fix suspend resume clocksource/drivers/pistachio: Fix wrong calculated clocksource read value clockevents/drivers/arm_global_timer: Use writel_relaxed in gt_compare_set clocksource/drivers/dw_apb_timer: Inline apbt_readl and apbt_writel clocksource/drivers/dw_apb_timer: Use {readl|writel}_relaxed in critical path clocksource/drivers/dw_apb_timer: Fix apbt_readl return types clocksource/drivers/tango-xtal: Replace code by clocksource_mmio_init clocksource/drivers/h8300: Increase the compilation test coverage ... * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: posix-clock: Fix return code on the poll method's error path
2016-01-09arch: consolidate CONFIG_STRICT_DEVM in lib/Kconfig.debugDan Williams1-0/+1
Let all the archs that implement devmem_is_allowed() opt-in to a common definition of CONFIG_STRICT_DEVM in lib/Kconfig.debug. Cc: Kees Cook <keescook@chromium.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "David S. Miller" <davem@davemloft.net> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> [heiko: drop 'default y' for s390] Acked-by: Ingo Molnar <mingo@redhat.com> Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2016-01-05Merge branches 'misc' and 'misc-rc6' into for-linusRussell King1-5/+25
2016-01-04ARM: 8481/2: drivers: psci: replace psci firmware callsJens Wiklander1-1/+1
Switch to use a generic interface for issuing SMC/HVC based on ARM SMC Calling Convention. Removes now the now unused psci-call.S. Acked-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-01-04ARM: 8479/2: add implementation for arm-smcccJens Wiklander1-0/+1
Adds implementation for arm-smccc and enables CONFIG_HAVE_SMCCC for architectures that may support arm-smccc. It's the responsibility of the caller to know if the SMC instruction is supported by the platform. Reviewed-by: Lars Persson <lars.persson@axis.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-12-23ARM: tango4: Initial platform supportMarc Gonzalez1-0/+2
Support Sigma Designs ARM-based (specifically, Cortex-A9 MPCore r3p0) Tango4 "Secure Media Processor" platforms: smp8756, smp8758, smp8759 (8756 is single-core, the latter are dual-core). Note: 8758 vs 8759: same chip, different package. Support for older MIPS-based platforms can be found elsewhere: https://github.com/mansr/linux-tangox Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Reviewed-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
2015-12-21arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_opsStefano Stabellini1-0/+20
Introduce CONFIG_PARAVIRT and PARAVIRT_TIME_ACCOUNTING on ARM. The only paravirt interface supported is pv_time_ops.steal_clock, so no runtime pvops patching needed. This allows us to make use of steal_account_process_tick for stolen ticks accounting. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Christopher Covington <cov@codeaurora.org> Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Russell King <linux@arm.linux.org.uk>
2015-12-18Merge branch 'treewide/cleanup' into next/multiplatformArnd Bergmann1-1/+2
The realview multiplatform series has a trivial conflict with one of the treewide cleanups, let's just merge that in to avoid having to resolve this later. * treewide/cleanup: ARM: use "depends on" for SoC configs instead of "if" after prompt ARM/clocksource: use automatic DT probing for ux500 PRCMU ARM: use const and __initconst for smp_operations ARM: hisi: do not export smp_operations structures Conflicts: arch/arm/mach-integrator/Kconfig
2015-12-18Merge tag 'realview-multiplatform-tag' of ↵Arnd Bergmann1-14/+0
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into next/multiplatform Pull "Multiplatform support for the RealView" from Linus Walleij: Here is the result of my application of the second part of Arnds patchset, actually enabling multiplatform and getting the RealView off the ground as a multiplatform target. It is dependent on an outstanding patch to the irqchips tree bumping the number of GICs to 2 for the RealView platform. I cannot say I will be sleepless if these go in side by side: each branch will compile but will not boot until both trees have been pulled hurting bisectability a bit. - Tested on the ARM PB11MPCore - Tested with boardfile boot - Tested with DeviceTree boot * tag 'realview-multiplatform-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator: ARM: realview: select apropriate targets ARM: realview: clean up header files ARM: realview: make all header files local ARM: no longer make CPU targets visible separately ARM: integrator: use explicit core module options ARM: realview: enable multiplatform
2015-12-18ARM: realview: enable multiplatformArnd Bergmann1-14/+0
All obstacles are out of the way by now, so we can finally move realview to multiplatform. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Russell King <linux@arm.linux.org.uk> [Rebased Kconfig, fixed if $(X) to if X in Makefile] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-17ARM: make default platform work for NOMMUArnd Bergmann1-1/+1
Moving ARCH_VERSATILE into ARCH_MULTIPLATFORM means that it no longer works as the default target for MMU-less kernels. While we might want to get that working again in the future, it's also a rather bad default, and it makes sense to make ARM_SINGLE_V7M the default because that is what realistically all NOMMU users on ARM are using, and it actually is what gets selected by default in the absence of versatile in the choice statement. Related to this, 'allnoconfig' kernels fail to link with the new default, as they do not include a machine record: arm-linux-gnueabi-ld: no machine record defined For ARCH_MULTIPLATFORM kernels, we avoid this error by using a default machine descriptor that works for all trivial platforms, like ARCH_VIRT. The same reasoning applies for ARM_SINGLE_V7M, as that can also boot with empty machine descriptors both on qemu and on real hardware, as long as all the drivers are present. We could also follow up with a patch to remove the existing machine descriptors for the ARMv7M platforms, the only callback pointer the four platforms contain today is the armv7m_restart handler and we can simply make that the default for v7M with an add-on patch. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-12-17ARM: 8477/1: runtime patch udiv/sdiv instructions into __aeabi_{u}idiv()Nicolas Pitre1-0/+18
The ARM compiler inserts calls to __aeabi_idiv() and __aeabi_uidiv() when it needs to perform division on signed and unsigned integers. If a processor has support for the sdiv and udiv instructions, the kernel may overwrite the beginning of those functions with those instructions and a "bx lr" to get better performance. To ensure that those functions are aligned to a 32-bit word for easier patching (which might not always be the case in Thumb mode) and that the two patched instructions end up in the same cache line, a 8-byte alignment is enforced when ARM_PATCH_IDIV is selected. This was heavily inspired by a previous patch from Stephen Boyd. Signed-off-by: Nicolas Pitre <nico@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-12-16Merge tag 'mvebu-soc-4.5-1' of git://git.infradead.org/linux-mvebu into ↵Arnd Bergmann1-27/+3
next/multiplatform Merge "mvebu soc for 4.5 (part 1)" from Gregory CLEMENT: - orion5x/mv78xx0 multiplatform conversion - legacy dove PMU support conversion * tag 'mvebu-soc-4.5-1' of git://git.infradead.org/linux-mvebu: ARM: dove: convert legacy dove to PMU support soc: dove: add legacy support to PMU driver ARM: orion5x: multiplatform support ARM: orion5x: clean up mach/*.h headers ARM: mv78xx0: multiplatform support ARM: mv78xx0: clean up mach/*.h headers ARM: orion: use SPARSE_IRQ everywhere ARM: orion: always use MULTI_IRQ_HANDLER ARM: orion: move watchdog setup to mach-orion5x Conflicts: arch/arm/Kconfig arch/arm/mach-dove/include/mach/entry-macro.S arch/arm/mach-orion5x/include/mach/entry-macro.S
2015-12-16Merge tag 'realview-base-armsoc-1-tag' of ↵Arnd Bergmann1-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into next/multiplatform Merge "Realview multiplatform support" from Linus Walleij: The board and infrastructure changes for RealView multiplatform and extended DT support. * tag 'realview-base-armsoc-1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator: ARM: realview: add an DT SMP boot method ARM: realview: select SP810 and ICST for the DT variant soc: versatile: add support for the PB11MPCore clk: versatile-icst: add device tree support clk: versatile-icst: refactor to allocate regmap separately clk: versatile-icst: convert to use regmap ARM: realview: remove private barrier implementation ARM: no longer force unbuffered DMA for realview clk/realview: stop using machine headers ARM: realview: don't map undefined PCI registers ARM: realview: remove sparsemem hack Conflicts: drivers/clk/versatile/Kconfig
2015-12-16Merge branch 'versatile/multiplatform' into next/multiplatformArnd Bergmann1-17/+0
Merge "ARM Versatile multi-platform support" from Rob Herring: Arnd lit a fire under me to dust this off and get it merged. So here it is. The main change from prior version is I merged all the code to a single file. It's a bigger patch than I'd like, but I don't think trying to do it in multiple steps is worth it. This is dependent on some solution for the default platform choice on !MMU builds (allnoconfig) as it can't be Versatile after this series. Arnd has some ideas on how to address that. This is tested under QEMU. Linus previously tested this on actual h/w and had a problem with the display identification which needs investigation or agreement to worry about it if and when someone actually cares. * versatile/multiplatform: ARM: versatile: convert to multi-platform ARM: versatile: merge mach code into a single file ARM: versatile: switch to DT only booting and remove legacy code ARM: versatile: add DT based PCI detection Acked-by: Marc Zyngier <marc.zyngier@arm.com>
2015-12-16ARM: versatile: convert to multi-platformRob Herring1-20/+2
Now that all the prerequisites are in place, we can enable Versatile boards for multi-platform kernels. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-12-16ARM: versatile: switch to DT only booting and remove legacy codeRob Herring1-6/+7
With DT support for clocks, irqchips, timers, and PCI now in place, DT based booting has feature parity with non-DT legacy boot. The final piece is actually enabling common clock support on Versatile. Enabling full DT support requires either removing the old Versatile clock code, updating the legacy boot to use the common clock code, or making DT and legacy boot mutually exclusive. Given that removing legacy boot code is the goal anyway, I am going with the 1st option. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Mike Turquette <mturquette@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-12-16Merge branch 'mmp/multiplatform' into next/multiplatformArnd Bergmann1-16/+0
* mmp/multiplatform: ARM: mmp: avoid unused functions ARM: mmp: move into ARCH_MULTIPLATFORM ARM: mmp: make all header files local ARM: mmp: make plat-pxa build standalone ARM: mmp: remove remaining legacy pxa-dma support ARM: mohawk: allow building with MMU disabled ARM: make xscale iwmmxt code multiplatform aware clk: mmp: stop using platform headers
2015-12-15ARM: realview: remove sparsemem hackArnd Bergmann1-2/+0
The realview-pbx platform has an elaborate way of avoiding the use of highmem by redefining its phys_to_virt function. In practice this doesn't help all that much, and it gets in the way of doing multiplatform builds for realview. This removes the feature and kills off the mach/memory.h file for realview. We also lose the ability to do sparsemem with this patch, but that should be put back into place for generic multiplatform configurations, to save a little memory on PBX. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-15clocksource/drivers/pxa_timer: Move the Kconfig ruleDaniel Lezcano1-0/+3
Instead of having the clocksource's Kconfig depending on the arch, let the arch to select the timer it needs. The CLKSRC_OF dependency is removed because already selected by the ARCH_PXA, and it is added for SA1100. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-12-14ARM: add UEFI stub supportRoy Franz1-0/+19
This patch adds EFI stub support for the ARM Linux kernel. The EFI stub operates similarly to the x86 and arm64 stubs: it is a shim between the EFI firmware and the normal zImage entry point, and sets up the environment that the zImage is expecting. This includes optionally loading the initrd and device tree from the system partition based on the kernel command line. Signed-off-by: Roy Franz <roy.franz@linaro.org> Tested-by: Ryan Harkin <ryan.harkin@linaro.org> Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2015-12-13ARM: add support for generic early_ioremap/early_memremapArd Biesheuvel1-0/+1
This enables the generic early_ioremap implementation for ARM. It uses the fixmap region reserved for kmap. Since early_ioremap is only supported before paging_init(), and kmap is only supported afterwards, this is guaranteed not to cause any clashes. Tested-by: Ryan Harkin <ryan.harkin@linaro.org> Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2015-12-08ARM: dove: convert legacy dove to PMU supportRussell King1-0/+1
Since Dove has non-DT support for various facilities in the PMU, convert the legacy support to use the new PMU driver. Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>