summaryrefslogtreecommitdiff
path: root/arch/arm
AgeCommit message (Collapse)Author
2013-06-26ARM: KVM: don't special case PC when doing an MMIOMarc Zyngier
Admitedly, reading a MMIO register to load PC is very weird. Writing PC to a MMIO register is probably even worse. But the architecture doesn't forbid any of these, and injecting a Prefetch Abort is the wrong thing to do anyway. Remove this check altogether, and let the adventurous guest wander into LaLaLand if they feel compelled to do so. Reported-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-06-26ARM: KVM: use phys_addr_t instead of unsigned long long for HYP PGDsMarc Zyngier
HYP PGDs are passed around as phys_addr_t, except just before calling into the hypervisor init code, where they are cast to a rather weird unsigned long long. Just keep them around as phys_addr_t, which is what makes the most sense. Reported-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-06-26ARM: KVM: remove dead prototype for __kvm_tlb_flush_vmidMarc Zyngier
__kvm_tlb_flush_vmid has been renamed to __kvm_tlb_flush_vmid_ipa, and the old prototype should have been removed when the code was modified. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-06-26ARM: KVM: Don't handle PSCI calls via SMCDave P Martin
Currently, kvmtool unconditionally declares that HVC should be used to call PSCI, so the function numbers in the DT tell the guest nothing about the function ID namespace or calling convention for SMC. We already assume that the guest will examine and honour the DT, since there is no way it could possibly guess the KVM-specific PSCI function IDs otherwise. So let's not encourage guests to violate what's specified in the DT by using SMC to make the call. [ Modified to apply to top of kvm/arm tree - Christoffer ] Signed-off-by: Dave P Martin <Dave.Martin@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-06-26ARM: KVM: Allow host virt timer irq to be different from guest timer virt irqAnup Patel
The arch_timer irq numbers (or PPI numbers) are implementation dependent, so the host virtual timer irq number can be different from guest virtual timer irq number. This patch ensures that host virtual timer irq number is read from DTB and guest virtual timer irq is determined based on vcpu target type. Signed-off-by: Anup Patel <anup.patel@linaro.org> Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org> Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-06-26Merge tag 'at91-dt' of git://github.com/at91linux/linux-at91 into next/dtArnd Bergmann
From Nicolas Ferre: - more SPI DT activation for rm9200 - SPI DMA for at91sam9n12/sama5d3 And one little fix for SPI compatibility string * tag 'at91-dt' of git://github.com/at91linux/linux-at91: ARM: at91: dt: rm9200ek: add spi support ARM: at91: dt: rm9200: add spi support ARM: at91/DT: at91sam9n12: add SPI DMA client infos ARM: at91/DT: sama5d3: add SPI DMA client infos ARM: at91/DT: fix SPI compatibility string Conflicts: arch/arm/boot/dts/sama5d3.dtsi Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-06-26Merge tag 'omap-pm-v3.11/fixes/omap5-voltdm' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into next/soc From Kevin Hilman: OMAP5: PM: fix boot by removing unneeded dummy voltage domain data * tag 'omap-pm-v3.11/fixes/omap5-voltdm' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm: ARM: OMAP5: voltagedomain data: remove temporary OMAP4 voltage data Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-06-26ARM: at91/PMC: use at91_usb_rate() for UTMI PLLNicolas Ferre
We are using this function, now that we have introduced the support for UTMI clock for computing the USB host rate. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Bo Shen <voice.shen@atmel.com>
2013-06-26ARM: at91/PMC: fix at91sam9n12 USB FS initNicolas Ferre
at91sam9n12 has Full-speed only USB. So we should add it to the list in at91_pllb_usbfs_clock_init() function. Moreover, at91sam9n12 has an unusual PMC in the sense that it has a PLLB but also has a USB clock register. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Bo Shen <voice.shen@atmel.com>
2013-06-26ARM: at91/PMC: at91sam9n12 family has a PLLBNicolas Ferre
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Bo Shen <voice.shen@atmel.com>
2013-06-26ARM: at91/PMC: sama5d3 family doesn't have a PLLBNicolas Ferre
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
2013-06-26ARM: at91: dt: rm9200ek: add spi supportJean-Christophe PLAGNIOL-VILLARD
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-06-26ARM: at91: dt: rm9200: add spi supportJean-Christophe PLAGNIOL-VILLARD
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-06-26ARM: at91/DT: at91sam9n12: add SPI DMA client infosNicolas Ferre
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-06-26ARM: at91/DT: sama5d3: add SPI DMA client infosNicolas Ferre
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Wenyou Yang <wenyou.yang@atmel.com>
2013-06-26ARM: at91/DT: fix SPI compatibility stringNicolas Ferre
In previous version of SPI driver we where using different compatibility stings for finding SPI features. We are now using the IP revision information. So we stay with the unique compatibility string for this driver: "atmel,at91rm9200-spi". Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Wenyou Yang <wenyou.yang@atmel.com>
2013-06-25ARM: OMAP5: voltagedomain data: remove temporary OMAP4 voltage dataNishanth Menon
commit 20d49e9ccfece526db755940721aa13e331936d4 (ARM: OMAP5: voltagedomain data: Add OMAP5 voltage domain data) Introduced dummy volt data for OMAP5 with OMAP4460 voltage information. However with the fixes introduced in later patches commit cd8abed1da91a3250aa4b3857479613a2b446f84 (ARM: OMAP2+: Powerdomain: Remove the need to always have a voltdm associated to a pwrdm) We are no longer restricted in that respect. Further, OPP voltage information is supposed to be provided by dts information. This needs to be added in future patches as various voltage modules are converted to dts. This also fixes the build breakage for voltagedomains54xx_data.c when just OMAP5 SoC is enabled: https://patchwork.kernel.org/patch/2764191/ Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Nishanth Menon <nm@ti.com> Cc: Benoit Cousson <b-cousson@ti.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Tony Lindgren <tony@atomide.com> Cc: linux-omap@vger.kernel.org Signed-off-by: Kevin Hilman <khilman@linaro.org>
2013-06-25Merge branch 'sti/soc' into next/lateOlof Johansson
From Srinivas Kandagatla <srinivas.kandagatla@st.com>: This patch-set adds basic support for STMicroelectronics STi series SOCs which includes STiH415 and STiH416 with B2000 and B2020 board support. STiH415 and STiH416 are dual-core ARM Cortex-A9 CPU, designed for use in Set-top-boxes. The SOC support is available in mach-sti which contains support code for STiH415, STiH416 SOCs including the generic board support. The reason for adding two SOCs at this patch set is to show that no new C code is required for second SOC(STiH416) support. * sti/soc: ARM: stih41x: Add B2020 board support ARM: stih41x: Add B2000 board support ARM: sti: Add DEBUG_LL console support ARM: sti: Add STiH416 SOC support ARM: sti: Add STiH415 SOC support Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25Merge branch 'nspire/soc' into next/lateOlof Johansson
From Daniel Tang <dt.tangr@gmail.com> This is the initial platform code for the TI-Nspire graphing calculators. The platform support is rather unspectacular, but still contains platform data for the LCD panel, which will get removed once there is a DT binding for the AMBA CLCD driver. * nspire/soc: arm: Add Initial TI-Nspire support arm: Add device trees for TI-Nspire hardware Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25ARM: stih41x: Add B2020 board supportSrinivas Kandagatla
B2020 ADI board is reference board for STIH415/416 SOCs, it has 2 x UART, 4x USB, 1 x Ethernet, 1 x SATA, 1 x PCIe, and 2GB RAM with standard set-top box IPs. This patch adds initial support to B2020 with STiH415/416 with SBC_UART1 as console and a heard beat LED. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> CC: Stephen Gallimore <stephen.gallimore@st.com> CC: Stuart Menefy <stuart.menefy@st.com> CC: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25ARM: stih41x: Add B2000 board supportSrinivas Kandagatla
B2000 board is reference board for STIH415/416 SOCs, it has 2 x UART, 4x USB, 2 x Ethernet, 1 x SATA, 1 x PCIe, and 1GB RAM. This patch add initial support to b2000 with STiH415/416 with UART2 as console and a heard beat LED. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> CC: Stephen Gallimore <stephen.gallimore@st.com> CC: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25ARM: sti: Add DEBUG_LL console supportSrinivas Kandagatla
This patch adds low level debug uart support to sti based SOCs. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> CC: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25ARM: sti: Add STiH416 SOC supportSrinivas Kandagatla
The STiH416 is advanced HD AVC processor with 3D graphics acceleration and 1.2-GHz ARM Cortex-A9 SMP CPU. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> CC: Stephen Gallimore <stephen.gallimore@st.com> CC: Stuart Menefy <stuart.menefy@st.com> CC: Arnd Bergmann <arnd@arndb.de> CC: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25ARM: sti: Add STiH415 SOC supportSrinivas Kandagatla
The STiH415 is the next generation of HD, AVC set-top box processors for satellite, cable, terrestrial and IP-STB markets. It is an ARM Cortex-A9 1.0 GHz, dual-core CPU. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> CC: Stephen Gallimore <stephen.gallimore@st.com> CC: Stuart Menefy <stuart.menefy@st.com> CC: Arnd Bergmann <arnd@arndb.de> CC: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25ARM: tegra: fix section mismatch in tegra_pmc_parse_dtStephen Warren
tegra_pmc_parse_dt() references __initconst data. Fix it to be __init. This matches its only usage; a call from tegra_pmc_init() which is already __init. This fixes: WARNING: vmlinux.o(.text.unlikely+0x580): Section mismatch in reference from the function tegra_pmc_parse_dt() to the (unknown reference) .init.rodata:(unknown) Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25Merge tag 'fixes-non-3.11-2' of git://git.infradead.org/users/jcooper/linux ↵Olof Johansson
into next/fixes-non-critical From Jason Cooper: - mv78260: catch missing fix for mvneta register length * tag 'fixes-non-3.11-2' of git://git.infradead.org/users/jcooper/linux: ARM: mvebu: fix length of ethernet registers in mv78260 dtsi Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25Merge tag 'soc-exynos5420-2' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/late From Kukjin Kim, this adds pinctrl support for Exynos 5420. * tag 'soc-exynos5420-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: pinctrl: exynos: add exynos5420 SoC specific data ARM: dts: add pinctrl support to EXYNOS5420 Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25arm: orion: Use irq_get_trigger_type() to get IRQ flagsJavier Martinez Canillas
Use irq_get_trigger_type() to get the IRQ trigger type flags instead calling irqd_get_trigger_type(irq_get_irq_data(irq)) Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Cc: Grant Likely <grant.likely@linaro.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Samuel Ortiz <sameo@linux.intel.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mips@linux-mips.org Link: http://lkml.kernel.org/r/1371228049-27080-6-git-send-email-javier.martinez@collabora.co.uk Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2013-06-24Merge 3.10-rc7 into usb-nextGreg Kroah-Hartman
We want the USB fixes and other good stuff in this branch as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-24Merge 3.10-rc7 into driver-core-nextGreg Kroah-Hartman
We want the firmware merge fixes, and other bits, in here now. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-24ARM: msm: Migrate to common clock frameworkStephen Boyd
Move the existing clock code in mach-msm to the common clock framework. We lose our capability to set the rate of and enable a clock through debugfs. This is ok though because the debugfs features are mainly used for testing and development of new clock code. To maintain compatibility with the original MSM clock code we make a wrapper for clk_reset() that calls the struct msm_clk specific reset function. This is necessary for the usb and sdcc devices on MSM until a better suited API is made available. Cc: Saravana Kannan <skannan@codeaurora.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org>
2013-06-24ARM: msm: Make proc_comm clock control into a platform driverStephen Boyd
To move closer to the generic struct clock framework move the proc_comm based clock code to a platform driver. The data describing the struct clks still live in the devices-$ARCH file, but the clock initialization is done at driver binding time. Cc: Saravana Kannan <skannan@codeaurora.org> Reviewed-by: Pankaj Jangra <jangra.pankaj9@gmail.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org>
2013-06-24ARM: msm: Prepare clk_get() users in mach-msm for clock-pcom driverStephen Boyd
In the near future we'll be moving clock-pcom to a platform driver, in which case these two users of clk_get() in mach-msm need to be updated. Have board-trout-panel.c make the proc_comm call directly so that we don't have to port this board specific code to the driver right now and reorder the initcall order of dma.c so that it initializes after the clock driver probes but before any drivers use dma APIs. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org>
2013-06-24ARM: msm: Remove clock-7x30.h include fileStephen Boyd
This file is not used outside of the two users in the clock-7x30 array. Those two clocks are virtual "source" clocks that don't really need to exist outside of the clock driver. Let's remove them from the array, since they're not doing anything anyway, and then remove the clock-7x30.h include file along with it. Cc: Saravana Kannan <skannan@codeaurora.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org>
2013-06-24ARM: msm: Remove custom clk_set_{max,min}_rate() APIStephen Boyd
There are no users of this API anymore so let's just remove it. If a need arises in the future we can extend the common clock API to handle it. Acked-by: Saravana Kannan <skannan@codeaurora.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org>
2013-06-24ARM: msm: Remove custom clk_set_flags() APIStephen Boyd
Nobody is using this API upstream and it's just contributing cruft. Remove it so the MSM clock API is closer to the generic struct clock API. Acked-by: Saravana Kannan <skannan@codeaurora.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org>
2013-06-24Merge tag 'davinci-for-v3.11/soc-2' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/soc From Sekhar Nori: DaVinci SoC updates for v3.11 - part 2 This pull request adds DT and runtime PM to EDMA ARM private API so it can be used on DT enabled DaVinci and OMAP platforms. Also adds DMA channel crossbar mapping support to be used by DT-enabled platforms which use it. * tag 'davinci-for-v3.11/soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: dmaengine: edma: enable build for AM33XX ARM: edma: Add EDMA crossbar event mux support ARM: edma: Add DT and runtime PM support to the private EDMA API dmaengine: edma: Add TI EDMA device tree binding ARM: edma: Convert to devm_* api Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-06-24ARM: 7770/1: remove residual ARMv2 support from decompressorMarc Zyngier
arm26 support in Linux is long gone, yet it left an interresting, fossilized trace in the decompressor. Remove it so people won't get confused about what teqp is actually doing here... Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-06-24ARM: 7769/1: Cortex-A15: fix erratum 798181 implementationMarc Zyngier
Looking into the active_asids array is not enough, as we also need to look into the reserved_asids array (they both represent processes that are currently running). Also, not holding the ASID allocator lock is racy, as another CPU could schedule that process and trigger a rollover, making the erratum workaround miss an IPI. Exposing this outside of context.c is a little ugly on the side, so let's define a new entry point that the erratum workaround can call to obtain the cpumask. Cc: <stable@vger.kernel.org> # 3.9 Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-06-24ARM: 7768/1: prevent risks of out-of-bound access in ASID allocatorMarc Zyngier
On a CPU that never ran anything, both the active and reserved ASID fields are set to zero. In this case the ASID_TO_IDX() macro will return -1, which is not a very useful value to index a bitmap. Instead of trying to offset the ASID so that ASID #1 is actually bit 0 in the asid_map bitmap, just always ignore bit 0 and start the search from bit 1. This makes the code a bit more readable, and without risk of OoB access. Cc: <stable@vger.kernel.org> # 3.9 Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-06-24ARM: 7767/1: let the ASID allocator handle suspended animationMarc Zyngier
When a CPU is running a process, the ASID for that process is held in a per-CPU variable (the "active ASIDs" array). When the ASID allocator handles a rollover, it copies the active ASIDs into a "reserved ASIDs" array to ensure that a process currently running on another CPU will continue to run unaffected. The active array is zero-ed to indicate that a rollover occurred. Because of this mechanism, a reserved ASID is only remembered for a single rollover. A subsequent rollover will completely refill the reserved ASIDs array. In a severely oversubscribed environment where a CPU can be prevented from running for extended periods of time (think virtual machines), the above has a horrible side effect: [P{a} denotes process P running with ASID a] CPU-0 CPU-1 A{x} [active = <x 0>] [suspended] runs B{y} [active = <x y>] [rollover: active = <0 0> reserved = <x y>] runs B{y} [active = <0 y> reserved = <x y>] [rollover: active = <0 0> reserved = <0 y>] runs C{x} [active = <0 x>] [resumes] runs A{x} At that stage, both A and C have the same ASID, with deadly consequences. The fix is to preserve reserved ASIDs across rollovers if the CPU doesn't have an active ASID when the rollover occurs. Cc: <stable@vger.kernel.org> # 3.9 Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Catalin Carinas <catalin.marinas@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-06-24ARM: 7766/1: versatile: don't mark pen as __INITMark Rutland
When booting fewer cores than are physically present on a versatile platform (e.g. when passing maxcpus=N on the command line), some secondary cores may remain in the holding pen, which is marked __INIT, as each CPU's gic cpumask is initialised to 0xff, and thus an IPI to any CPU will wake up *all* secondaries. This behaviour is crucial to the GIC cpumask self-discovery. Late in the boot process, the memory comprising the holding pen will be released to the kernel for more general use, and may be overwritten with arbitrary data, which can cause the held secondaries to start behaving unpredictably. This can lead to all manner of odd behaviour from the kernel. As preventing cpus from entering the pen would require invasive changes to the GIC driver and to existing dts used in the wild, we instead remove the __INIT marker from the pen, keeping it around and leaving the unused secondary CPUs dormant. Link: http://lists.infradead.org/pipermail/linux-arm-kernel/2013-June/175039.html Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Pawel Moll <pawel.moll@arm.com> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-06-24ARM: keystone: Move CPU bringup code to dedicated asm fileSantosh Shilimkar
Because of inline asm usage in platsmp.c, smc instruction creates build failure for ARM V6+V7 build where as using instruction encoding for smc breaks the thumb2 build. So move the code snippet to separate asm file and mark it with 'armv7-a$(plus_sec)' to avoid any build issues. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-06-24ARM: 7765/1: perf: Record the user-mode PC in the call chain.Jed Davis
With this change, we no longer lose the innermost entry in the user-mode part of the call chain. See also the x86 port, which includes the ip. It's possible to partially work around this problem by post-processing the data to use the PERF_SAMPLE_IP value, but this works only if the CPU wasn't in the kernel when the sample was taken. Cc: <stable@vger.kernel.org> Signed-off-by: Jed Davis <jld@mozilla.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-06-24ARM: 7735/2: Preserve the user r/w register TPIDRURW on context switch and forkAndré Hentschel
Since commit 6a1c53124aa1 the user writeable TLS register was zeroed to prevent it from being used as a covert channel between two tasks. There are more and more applications coming to Windows RT, Wine could support them, but mostly they expect to have the thread environment block (TEB) in TPIDRURW. This patch preserves that register per thread instead of clearing it. Unlike the TPIDRURO, which is already switched, the TPIDRURW can be updated from userspace so needs careful treatment in the case that we modify TPIDRURW and call fork(). To avoid this we must always read TPIDRURW in copy_thread. Signed-off-by: André Hentschel <nerv@dawncrow.de> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Jonathan Austin <jonathan.austin@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-06-24ARM: multiplatform: always pick one CPU typeArnd Bergmann
With the new default platform code, we can always boot using DT without requiring a board file, but we cannot build a kernel unless we select at least one CPU core, which breaks some "randconfig" builds. This adapts the ARCH_MULTI_V4T and ARCH_MULTI_V5 options so we always default to a common CPU core if no platform was enabled that picks something else. The default we pick for ARMv4T is ARM920T, while for ARMv5 we pick ARM926T. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-06-24ARM: imx: select syscon for IMX6SLArnd Bergmann
This is required for building a kernel that enables only IMX6SL but not IMX6Q, which would get a build error when syscon is not available. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2013-06-24ARM: keystone: select ARM_ERRATA_798181 only for SMPArnd Bergmann
Selecting this symbol causes a build warning without SMP: warning: (ARCH_KEYSTONE) selects ARM_ERRATA_798181 which has unmet direct dependencies (CPU_V7 && SMP) Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2013-06-24ARM: imx: Synertronixx scb9328 needs to select SOC_IMX1Arnd Bergmann
This is required for building a kernel that enables only scb9328 and would not get the i.MX1 specific files otherwise. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Sascha Hauer <kernel@pengutronix.de>
2013-06-24ARM: OMAP2+: AM43x: resolve SMP related build errorMohammed, Afzal
If AM43x and SMP is selected, OMAP4 & OMAP5 deselected, build error as follows, arch/arm/mach-omap2/built-in.o: In function `scu_gp_set': arch/arm/mach-omap2/sleep44xx.S:131: undefined reference to `omap4_get_scu_base' arch/arm/mach-omap2/sleep44xx.S:132: undefined reference to `scu_power_mode' arch/arm/mach-omap2/built-in.o: In function `scu_gp_clear': arch/arm/mach-omap2/sleep44xx.S:227: undefined reference to `omap4_get_scu_base' arch/arm/mach-omap2/sleep44xx.S:229: undefined reference to `scu_power_mode' Resolve it by building sleep44xx.S only for OMAP4 & OMAP5. Signed-off-by: Afzal Mohammed <afzal@ti.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>