This patch allows to build and use vgic-v3 in 32-bit mode.
Unfortunately, it can not be split in several steps without extra
stubs to keep patches independent and bisectable. For instance,
virt/kvm/arm/vgic/vgic-v3.c uses function from vgic-v3-sr.c, handling
access to GICv3 cpu interface from the guest requires vgic_v3.vgic_sre
to be already defined.
It is how support has been done:
* handle SGI requests from the guest
* report configured SRE on access to GICv3 cpu interface from the guest
* required vgic-v3 macros are provided via uapi.h
* static keys are used to select GIC backend
* to make vgic-v3 build KVM_ARM_VGIC_V3 guard is removed along with
the static inlines
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
By now ITS code guarded with KVM_ARM_VGIC_V3 config option which was
introduced to hide everything specific to vgic-v3 from 32-bit world.
We are going to support vgic-v3 in 32-bit world and KVM_ARM_VGIC_V3
will gone, but we don't have support for ITS there yet and we need to
continue keeping ITS away.
Introduce the new config option to prevent ITS code being build in
32-bit mode when support for vgic-v3 is done.
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
So we can reuse the code under arch/arm
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Since we are going to share vgic-v3 save/restore code with ARM keep
arch specific accessors separately.
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Currently GIC backend is selected via alternative framework and this
is fine. We are going to introduce vgic-v3 to 32-bit world and there
we don't have patching framework in hand, so we can either check
support for GICv3 every time we need to choose which backend to use or
try to optimise it by using static keys. The later looks quite
promising because we can share logic involved in selecting GIC backend
between architectures if both uses static keys.
This patch moves arm64 from alternative to static keys framework for
selecting GIC backend. For that we embed static key into vgic_global
and enable the key during vgic initialisation based on what has
already been exposed by the host GIC driver.
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
virt_addr_valid is supposed to return true if and only if virt_to_page
returns a valid page structure. The current macro does math on whatever
address is given and passes that to pfn_valid to verify. vmalloc and
module addresses can happen to generate a pfn that 'happens' to be
valid. Fix this by only performing the pfn_valid check on addresses that
have the potential to be valid.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
These files were only including module.h for exception table
related functions. We've now separated that content out into its
own file "extable.h" so now move over to that and avoid all the
extra header content in module.h that we don't really need to compile
these files.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
- Enable ZTE ZX family support in arm64 defconfig
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Merge tag 'zte-defconfig64-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/arm64
Pull "ZTE arm64 defconfig updates for 4.9" from Shawn Guo:
- Enable ZTE ZX family support in arm64 defconfig
* tag 'zte-defconfig64-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
arm64: defconfig: enable ZTE ZX related config
- Add a Kconfig option for ZTE ZX SoC family support
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Merge tag 'zte-soc64-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/arm64
Pull "ZTE arm64 SoC changes for 4.9" from Shawn Guo:
- Add a Kconfig option for ZTE ZX SoC family support
* tag 'zte-soc64-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
arm64: add ZTE ZX SoC family
- Add initial DTS support for ZTE ZX296718 SoC and ZX296718 EVB board.
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Merge tag 'zte-dt64-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/dt64
Pull "ZTE arm64 device tree changes for 4.9" from Shawn Guo:
- Add initial DTS support for ZTE ZX296718 SoC and ZX296718 EVB board.
* tag 'zte-dt64-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
arm64: dts: Add ZTE ZX296718 SoC dts and Makefile
- enable MSI for PCIe on Armada 7K/8K
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Merge tag 'mvebu-dt64-4.9-2' of git://git.infradead.org/linux-mvebu into next/dt64
Pull "mvebu dt64 for 4.9 (part 2)" from Gregory CLEMENT:
- enable MSI for PCIe on Armada 7K/8K
* tag 'mvebu-dt64-4.9-2' of git://git.infradead.org/linux-mvebu:
arm64: dts: marvell: enable MSI for PCIe on Armada 7K/8K
Pull crypto fixes from Herbert Xu:
"This fixes a potential weakness in IPsec CBC IV generation, as well as
a number of issues that arose out of an OOM crash on ARM with CTR-mode
AES"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: arm64/aes-ctr - fix NULL dereference in tail processing
crypto: arm/aes-ctr - fix NULL dereference in tail processing
crypto: skcipher - Fix blkcipher walk OOM crash
crypto: echainiv - Replace chaining with multiplication
Here are a couple of bugfixes for v4.8-rc. Most of them have
actually been around for a while this time but for some reason
didn't get applied early on. The shmobile regulator fix is the
only one that isn't completely obvious.
device tree changes:
- archtimer interrupts must be level triggered (multiple platforms)
- fix for USB and MMC clocks on STiH410
- fix split DT repository in case of raspberry-pi 3
- A new use of skeleton.dtsi on arm64 has crept in after that
was removed.
defconfig updates:
- xilinx vdma has a new Kconfig symbol name
- keystone requires CONFIG_NOP_USB_XCEIV since v4.8-rc1
code fixes:
- fix regulator quirk on shmobile
- suspend-to-ram regression on EXYNOS
maintainer updates:
- Javier Martinez Canillas is now a reviewer for Samsung EXYNOS
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"Here are a couple of bugfixes for v4.8-rc.
Most of them have actually been around for a while this time but for
some reason didn't get applied early on. The shmobile regulator fix
is the only one that isn't completely obvious.
Device tree changes:
- archtimer interrupts must be level triggered (multiple platforms)
- fix for USB and MMC clocks on STiH410
- fix split DT repository in case of raspberry-pi 3
- a new use of skeleton.dtsi on arm64 has crept in after that was
removed.
defconfig updates:
- xilinx vdma has a new Kconfig symbol name
- keystone requires CONFIG_NOP_USB_XCEIV since v4.8-rc1
Code fixes:
- fix regulator quirk on shmobile
- suspend-to-ram regression on EXYNOS
Maintainer updates:
- Javier Martinez Canillas is now a reviewer for Samsung EXYNOS"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: keystone: defconfig: Fix USB configuration
arm64: dts: Fix broken architected timer interrupt trigger
ARM: multi_v7_defconfig: update XILINX_VDMA
ARM64: dts: bcm: Use a symlink to R-Pi dtsi files from arch=arm
ARM: dts: Remove use of skeleton.dtsi from bcm283x.dtsi
ARM: dts: STiH407-family: Provide interconnect clock for consumption in ST SDHCI
ARM: dts: STiH410: Handle interconnect clock required by EHCI/OHCI (USB)
ARM: shmobile: fix regulator quirk for Gen2
ARM: EXYNOS: Clear OF_POPULATED flag from PMU node in IRQ init callback
MAINTAINERS: Add myself as reviewer for Samsung Exynos support
Move the PMU name into a common header file so it may
be referenced by other users.
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
ARMv8 machines can identify the micro/arch defined counters
that are available on a machine. Add all these counters to the
default armv8 perf map. At run-time disable the counters which
are not available on the given PMU.
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
In preparation for ACPI support, add a pmu_probe_info table to
the arm_pmu_device_probe() call. This table gets used when
probing in the absence of a devicetree node for PMU.
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
With our DMA ops enabled for PCI devices, we should avoid allocating
IOVAs which a host bridge might misinterpret as peer-to-peer DMA and
lead to faults, corruption or other badness. To be safe, punch out holes
for all of the relevant host bridge's windows when initialising a DMA
domain for a PCI device.
CC: Marek Szyprowski <m.szyprowski@samsung.com>
CC: Inki Dae <inki.dae@samsung.com>
Reported-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This patch introduces ARCH_ZX to add the support of the ZTE ZX SoC
family for the arm64 architecture.
Signed-off-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Add device tree support for ZX296718 SoC and evaluation board based
on it. Also document new values.
Signed-off-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Enable both gxbb USB controller and add a 5V regulator for the OTG port
VBUS
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Enable both gxbb USB controller and add a 5V regulator for the OTG port
VBUS
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
[khilman: rename vbus node to match P200 schematics]
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Kprobes searches backwards a finite number of instructions to determine if
there is an attempt to probe a load/store exclusive sequence. It stops when
it hits the maximum number of instructions or a load or store exclusive.
However this means it can run up past the beginning of the function and
start looking at literal constants. This has been shown to cause a false
positive and blocks insertion of the probe. To fix this, further limit the
backwards search to stop if it hits a symbol address from kallsyms. The
presumption is that this is the entry point to this code (particularly for
the common case of placing probes at the beginning of functions).
This also improves efficiency by not searching code that is not part of the
function. There may be some possibility that the label might not denote the
entry path to the probed instruction but the likelihood seems low and this
is just another example of how the kprobes user really needs to be
careful about what they are doing.
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: David A. Long <dave.long@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
the following:
- collective effort from Florian, Doug and Markus to add the ARCH_BRCMSTB Kconfig
symbol to the ARM64 kernel build, which is purposedly the same as the ARM/Linux
one in order not to update any driver dependencies
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Merge tag 'arm-soc/for-4.9/soc-arm64' of http://github.com/Broadcom/stblinux into next/arm64
Pull "Broadcom soc-arm64 changes for 4.9" from Florian Fainelli:
This pull request contains Broadcom ARM64-based SoC changes for 4.9, please pull
the following:
- collective effort from Florian, Doug and Markus to add the ARCH_BRCMSTB Kconfig
symbol to the ARM64 kernel build, which is purposedly the same as the ARM/Linux
one in order not to update any driver dependencies
* tag 'arm-soc/for-4.9/soc-arm64' of http://github.com/Broadcom/stblinux:
arm64: Add Broadcom Set Top Box Kconfig entry point
Enable common modules for power management; one is to enable
CPUFREQ_DT driver; the driver is used by many platforms by passing OPP
table from device tree.
Also enables thermal related drivers. Firstly we need enable
configuration CPU_THERMAL for CPU cooling device driver, this will bind
thermal zone with CPU cooling device; and enable 'power allocator'
thermal governor.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- add PCIe driver for Aardvark for Armada 3700
- enable xhci-platform for A7K/A8K
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Merge tag 'mvebu-defconfig64-4.9-1' of git://git.infradead.org/linux-mvebu into next/arm64
Pull "mvebu defconfig64 for 4.9 (part 1)" from Gregory CLEMENT:
- add PCIe driver for Aardvark for Armada 3700
- enable xhci-platform for A7K/A8K
* tag 'mvebu-defconfig64-4.9-1' of git://git.infradead.org/linux-mvebu:
arm64: configs: enable PCIe driver for Aardvark
arm64: defconfig: enable xhci-platform
drivers/char/hw_random/Kconfig has 'default m', so
simply removing this entry from the defconfig will
enable building HW random drivers as modules.
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- Enable hisilicon SAS and XGE for hip05 and hip06
- Enable drm, powerkey, bluetooth and adv7511/adv7533 for hikey
- Add PINCTRL to HISI platform
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Merge tag 'hisi-defconfig-for-4.9' of git://github.com/hisilicon/linux-hisi into next/arm64
Pull "ARM64: hisilicon: defconfig updates for 4.9" from Wei Xu:
- Enable hisilicon SAS and XGE for hip05 and hip06
- Enable drm, powerkey, bluetooth and adv7511/adv7533 for hikey
- Add PINCTRL to HISI platform
* tag 'hisi-defconfig-for-4.9' of git://github.com/hisilicon/linux-hisi:
Kconfig: ARCH_HISI: Add PINCTRL to HISI platform
arm64: defconfig: enable bluetooth supports as modules
arm64: defconfig: enable CONFIG_INPUT_HISI_POWERKEY for HiKey
arm64: defconfig: Enable HiSilicon kirin drm, adv7533 for HiKey
arm64: defconfig: Enable Hisi SAS and HNS
* dt/irq-fix:
arm64: dts: Fix broken architected timer interrupt trigger
This resolves a non-obvious conflict between a bugfix from
v4.8 and a cleanup for the exynos7 platform.
The ARM architected timer specification mandates that the interrupt
associated with each timer is level triggered (which corresponds to
the "counter >= comparator" condition).
A number of DTs are being remarkably creative, declaring the interrupt
to be edge triggered. A quick look at the TRM for the corresponding ARM
CPUs clearly shows that this is wrong, and I've corrected those.
For non-ARM designs (and in the absence of a publicly available TRM),
I've made them active low as well, which can't be completely wrong
as the GIC cannot disinguish between level low and level high.
The respective maintainers are of course welcome to prove me wrong.
While I was at it, I took the liberty to fix a couple of related issue,
such as some spurious affinity bits on ThunderX, and their complete
absence on ls1043a (both of which seem to be related to copy-pasting
from other DTs).
Acked-by: Duc Dang <dhdang@apm.com>
Acked-by: Carlo Caione <carlo@endlessm.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Add the nodes for the dwc2 USB controller and the related USB PHYs.
Currently we force usb0 to host mode because OTG is currently not
working in our PHY driver.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Add nodes for i2c bus on gxbb based platforms.
On the OdroidC2 (I2C A) and P200 (I2C B), the pull-up resistor are
present directly on the board. This indicates that these pins are
dedicated to i2c.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
This is used to configure the pins of the sd_emmc_a controller to
which an SDIO module is connected (when available).
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
The Amlogic reference driver uses the "mc_val" devicetree property to
configure the PRG_ETHERNET_ADDR0 register. Unfortunately it uses magic
values for this configuration.
According to the datasheet the PRG_ETHERNET_ADDR0 register is at address
0xc8834108. However, the reference driver uses 0xc8834540 instead.
According to my tests, the value from the reference driver is correct.
No changes are required to the board dts files because the only
required configuration option is the phy-mode, which had to be
configured correctly before as well.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
All of these have a Realtek Gbit RGMII PHY.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
- Add property dma-coherent for ls2080a PCI device to save software
cache maintenance.
- Update serial aliases and use stdout-path to sepecify console for
ls2080a and ls1043a boards.
- Add DDR memory controller device node for ls2080a and ls1043a SoCs.
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Merge tag 'imx-dt64-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/dt64
Pull "i.MX arm64 device tree changes for 4.9" from Shawn Guo:
- Add property dma-coherent for ls2080a PCI device to save software
cache maintenance.
- Update serial aliases and use stdout-path to sepecify console for
ls2080a and ls1043a boards.
- Add DDR memory controller device node for ls2080a and ls1043a SoCs.
* tag 'imx-dt64-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
arm64: dts: ls2080a: Add 'dma-coherent' for ls2080a PCI nodes
arm64: dts: add stdout-path to chosen node for ls2080a/ls1043a boards
arm64: dts: updates serial aliases for ls1043a rdb and qds boards
arm64: dts: Add DDR memory controller for Layerscape SoCs
Add a couple of devices (AGIC, ADMA) on Tegra210 and enable them on
Smaug. Also enable DPAUX on Smaug to allow the I2C bus that shares pads
with the DPAUX to be used to access various audio devices. Furthermore,
enable the XUSB controller on Smaug for USB 3.0 support.
Finally, select PM_GENERIC_DOMAINS for 64-bit Tegra devices to make sure
devices are probed only after their power partitions have been enabled.
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Merge tag 'tegra-for-4.9-arm64-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/dt64
Pull "arm64: tegra: Device tree changes for v4.9-rc1" from Thierry Reding:
Add a couple of devices (AGIC, ADMA) on Tegra210 and enable them on
Smaug. Also enable DPAUX on Smaug to allow the I2C bus that shares pads
with the DPAUX to be used to access various audio devices. Furthermore,
enable the XUSB controller on Smaug for USB 3.0 support.
Finally, select PM_GENERIC_DOMAINS for 64-bit Tegra devices to make sure
devices are probed only after their power partitions have been enabled.
* tag 'tegra-for-4.9-arm64-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
arm64: tegra: Select PM_GENERIC_DOMAINS
arm64: tegra: Enable XUSB controller on Tegra210 Smaug
arm64: tegra: Add the various audio devices for Tegra210 Smaug
arm64: tegra: Enable DPAUX for Tegra210 Smaug
arm64: tegra: Add ACONNECT, ADMA and AGIC nodes Tegra210 Smaug
arm64: tegra: Add SOR power-domain for Tegra210
arm64: tegra: Add ADMA node for Tegra210
arm64: tegra: Add AGIC node for Tegra210
arm64: tegra: Drop clock and reset names for XUSB powergates
arm64: tegra: Simplify Tegra210 GPIO compatible value
Pull "Rockchip dts64 changes for 4.9" from Heiko Stübner:
64bit Rockchip devicetree changes containing support for the recently
added firmware reboot-flag support, one new board the Tronsmart Orion
based on the rk3368 and a large number of newly supported peripherals
for the rk3399 (type-c phy, usb2 phy, pcie controller and pcie phy,
gmac, arm-pmu using ppi partitioning, efuse, saradc) as well as some
smaller housekeeping and non-critical fixes.
* tag 'v4.9-rockchip-dts64-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip: (22 commits)
arm64: dts: rockchip: add Type-C phy for RK3399
arm64: dts: rockchip: enable the gmac for rk3399 evb board
arm64: dts: rockchip: add the gmac needed node for rk3399
arm64: dts: rockchip: support the pmu node for rk3399
arm64: dts: rockchip: change all interrupts cells to 4 on rk3399 SoCs
arm64: dts: rockchip: add the tcpc for rk3399 power domain
arm64: dts: rockchip: add efuse0 device node for rk3399
arm64: dts: rockchip: configure PCIe support for rk3399-evb
arm64: dts: rockchip: add the PCIe controller support for RK3399
arm64: dts: rockchip: add the PCIe PHY for RK3399
arm64: dts: rockchip: add the gmac power domain on rk3399
arm64: dts: rockchip: Add pinctrl entry for 32k clock on rk3399
arm64: dts: rockchip: set to CCI clock of RK3399 to 600M
arm64: dts: rockchip: fix the address map for WDT0 and WDT1
arm64: dts: rockchip: add the saradc for rk3399
arm64: dts: rockchip: configure usb2-phy support for rk3399-evb
arm64: dts: rockchip: add usb2-phy support for rk3399
arm64: dts: rockchip: add syscon-reboot-mode DT node
soc: rockchip: add reboot-mode header
arm64: dts: rockchip: remove broken-cd from sdio0
...
v4.9, please pull the folllowing:
- Dhanajay adds the PWM Device Tree nodes to the Northstar 2 DTS files
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Merge tag 'arm-soc/for-4.9/devicetree-arm64' of http://github.com/Broadcom/stblinux into next/dt64
Pull "Broadcom devicetree-arm64 changes for 4.9" from Florian Fainelli:
This pull request contains Broadcom ARM64-based SoC Device Tree changes for
v4.9, please pull the folllowing:
- Dhanajay adds the PWM Device Tree nodes to the Northstar 2 DTS files
* tag 'arm-soc/for-4.9/devicetree-arm64' of http://github.com/Broadcom/stblinux:
arm64: dts: Add PWM DT node for NS2
- add description for the new Armada 8040 dev board
- add the PIC and PMU on Armada 7K/8K
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Merge tag 'mvebu-dt64-4.9-1' of git://git.infradead.org/linux-mvebu into next/dt64
Pull "mvebu dt64 for 4.9 (part 1)" from Gregory CLEMENT:
- add description for the new Armada 8040 dev board
- add the PIC and PMU on Armada 7K/8K
* tag 'mvebu-dt64-4.9-1' of git://git.infradead.org/linux-mvebu:
arm64: dts: marvell: describe the PIC and PMU on Armada 7K/8K
arm64: dts: marvell: add description for the Armada 8040 dev board
arm64: dts: marvell: add description for the slave CP110 in Armada 8K
* Updates for MSM8916 including TSCR, SMSM/SMP2P, and MBA reserve
* Update SCM node to denote being a reset-controller
* Fix broken interrupt settings
* Add TSENS nodes for MSM8916/MSM8996
* Add DB820c support
* Add MSM8916/APQ8016 display support
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Merge tag 'qcom-arm64-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/dt64
Pull "Qualcomm ARM64 Updates for v4.9" from Andy Gross:
* Updates for MSM8916 including TSCR, SMSM/SMP2P, and MBA reserve
* Update SCM node to denote being a reset-controller
* Fix broken interrupt settings
* Add TSENS nodes for MSM8916/MSM8996
* Add DB820c support
* Add MSM8916/APQ8016 display support
* tag 'qcom-arm64-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
arm64: dts: apq8016-sbc: Add HDMI display support
arm64: dts: msm8916: Add display support
arm64: dts: db820c: add support to external sd card.
arm64: dts: db820c: add support to SPI on HS
arm64: dts: db820c: add support to LS-SPI0
arm64: dts: db820c: add support to I2C on HS
arm64: dts: db820c: add support to LS-I2C1
arm64: dts: db820c: add support to LS-I2C0
arm64: dts: db820c: add support to LS-UART0
arm64: dts: db820c: add basic board support
arm64: dts: msm8996: Add thermal zones, tsens and qfprom nodes
arm64: dts: msm8916: Add thermal zones, tsens and qfprom nodes
arm64: dts: qcom: Fix broken interrupt trigger settings
arm64: dts: qcom: msm8916: Add tcsr syscon
arm64: dts: qcom: msm8916: Make scm a reset-controller
arm64: dts: qcom: msm8916: Add mba memory reserve
arm64: dts: qcom: msm8916: Add smsm and smp2p nodes
- Set UART1 clock frequency to 150MHz for higher baud rates on hikey
- Add display subsystem, HDMI and cma nodes on hikey to support display
- Add syscon-reboot-mode support on hikey
- Add pstore support on hikey
- Add resets and sd-uhs-sdr property dwmmc ndoe on hikey
- Remove hip05_hns.dtsi since it can not be built without mbigenv1
- Update system controller bingding document for hip05 and hip06
- Add xge and sas support on hip06
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Merge tag 'hisi-soc-dt-for-4.9' of git://github.com/hisilicon/linux-hisi into next/dt64
Pull "ARM64: DT: Hisilicon SoC DT updates for 4.9" from Wei Xu:
- Set UART1 clock frequency to 150MHz for higher baud rates on hikey
- Add display subsystem, HDMI and cma nodes on hikey to support display
- Add syscon-reboot-mode support on hikey
- Add pstore support on hikey
- Add resets and sd-uhs-sdr property dwmmc ndoe on hikey
- Remove hip05_hns.dtsi since it can not be built without mbigenv1
- Update system controller bingding document for hip05 and hip06
- Add xge and sas support on hip06
* tag 'hisi-soc-dt-for-4.9' of git://github.com/hisilicon/linux-hisi:
arm64: dts: hi6220: add sd-uhs- properties into dwmmc_1
arm64: dts: hi6220: add resets property into dwmmc nodes
arm64: dts: hikey: extend default cma size to 128MB
arm64: dts: hip06: Append sas node
arm64: dts: hip06: Append hns node
dt-bindings: hisilicon: Add Hip05 and Hip06 system controller support
arm64: dts: hip05: kill hip05_hns.dtsi
arm64: dts: hikey: Add pstore support for HiKey
arm64: dts: hikey: Add hikey support for syscon-reboot-mode
arm64: dts: Add HDMI node for hi6220-hikey
arm64: dts: Add display subsystem DT nodes for hi6220-hikey
arm64: dts: set UART1 clock frequency to 150MHz
1. Use human-friendly symbols for interrupt flags.
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Merge tag 'samsung-dt64-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/dt64
Pull "Samsung DeviceTree ARM64 update for v4.9" from Krzysztof Kozlowski:
1. Use human-friendly symbols for interrupt flags.
* tag 'samsung-dt64-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
arm64: dts: exynos: Use human-friendly symbols for timer interrupt flags
* Match DT names other projects and documents
* Use clock/reset drivers
* Add new SoC/board support
* Misc
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Merge tag 'uniphier-dt64-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-uniphier into next/dt64
Merge "UniPhier ARM64 SoC DT updates for v4.9" from Masahiro Yamada:
* Match DT names other projects and documents
* Use clock/reset drivers
* Add new SoC/board support
* Misc
* tag 'uniphier-dt64-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-uniphier:
arm64: dts: uniphier: add LD11 SoC/Board support
arm64: dts: uniphier: add specific compatible to SoC-Glue node
arm64: dts: uniphier: use clock/reset controllers
arm64: dts: uniphier: add pinctrl property to System Bus node
arm64: dts: uniphier: match DT names to other projects and documents
This commit adds a reference to the appropriate MSI controller in the
description of the PCIe controllers on Marvel Armada 7K and 8K
platforms.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Paul Mackerras writes:
The highlights are:
* Reduced latency for interrupts from PCI pass-through devices, from
Suresh Warrier and me.
* Halt-polling implementation from Suraj Jitindar Singh.
* 64-bit VCPU statistics, also from Suraj.
* Various other minor fixes and improvements.
The AES-CTR glue code avoids calling into the blkcipher API for the
tail portion of the walk, by comparing the remainder of walk.nbytes
modulo AES_BLOCK_SIZE with the residual nbytes, and jumping straight
into the tail processing block if they are equal. This tail processing
block checks whether nbytes != 0, and does nothing otherwise.
However, in case of an allocation failure in the blkcipher layer, we
may enter this code with walk.nbytes == 0, while nbytes > 0. In this
case, we should not dereference the source and destination pointers,
since they may be NULL. So instead of checking for nbytes != 0, check
for (walk.nbytes % AES_BLOCK_SIZE) != 0, which implies the former in
non-error conditions.
Fixes: 49788fe2a1 ("arm64/crypto: AES-ECB/CBC/CTR/XTS using ARMv8 NEON and Crypto Extensions")
Cc: stable@vger.kernel.org
Reported-by: xiakaixu <xiakaixu@huawei.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Conflicts:
drivers/net/ethernet/mediatek/mtk_eth_soc.c
drivers/net/ethernet/qlogic/qed/qed_dcbx.c
drivers/net/phy/Kconfig
All conflicts were cases of overlapping commits.
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, when running on FVP, CPU 0 boots up with its BPR changed from
the reset value. This renders it impossible to (preemptively) prioritize
interrupts on CPU 0.
This is harmless on normal systems since Linux typically does not
support preemptive interrupts. It does however cause problems in
systems with additional changes (such as patches for NMI simulation).
Many thanks to Andrew Thoelke for suggesting the BPR as having the
potential to harm preemption.
Suggested-by: Andrew Thoelke <andrew.thoelke@arm.com>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Make use of the new alternative_if and alternative_else_nop_endif and
get rid of our open-coded NOP sleds, making the code simpler to read.
Note that for __kvm_call_hyp the branch to __vhe_hyp_call has been moved
out of the alternative sequence, and in the default case there will be
four additional NOPs executed.
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: kvmarm@lists.cs.columbia.edu
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Make use of the new alternative_if and alternative_else_nop_endif and
get rid of our homebew NOP sleds, making the code simpler to read.
Note that for cpu_do_switch_mm the ret has been moved out of the
alternative sequence, and in the default case there will be three
additional NOPs executed.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
In some cases, one side of an alternative sequence is simply a number of
NOPs used to balance the other side. Keeping track of this manually is
tedious, and the presence of large chains of NOPs makes the code more
painful to read than necessary.
To ameliorate matters, this patch adds a new alternative_else_nop_endif,
which automatically balances an alternative sequence with a trivial NOP
sled.
In many cases, we would like a NOP-sled in the default case, and
instructions patched in in the presence of a feature. To enable the NOPs
to be generated automatically for this case, this patch also adds a new
alternative_if, and updates alternative_else and alternative_endif to
work with either alternative_if or alternative_endif.
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Martin <dave.martin@arm.com>
Cc: James Morse <james.morse@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
[will: use new nops macro to generate nop sequences]
Signed-off-by: Will Deacon <will.deacon@arm.com>
The LSE atomics are implemented using alternative code sequences of
different lengths, and explicit NOP padding is used to ensure the
patching works correctly.
This patch converts the bulk of the LSE code over to using the __nops
macro, which makes it slightly clearer as to what is going on and also
consolidates all of the padding at the end of the various sequences.
Signed-off-by: Will Deacon <will.deacon@arm.com>
NOP sequences tend to get used for padding out alternative sections
and uarch-specific pipeline flushes in errata workarounds.
This patch adds macros for generating these sequences as both inline
asm blocks, but also as strings suitable for embedding in other asm
blocks directly.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Similar to our {read,write}_sysreg accessors for architected, named
system registers, this patch introduces {read,write}_sysreg_s variants
that can take arbitrary sys_reg output and therefore access IMPDEF
registers or registers that unsupported by binutils.
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The ../../../arm... style cross-references added by commit 9d56c22a78
("ARM: bcm2835: Add devicetree for the Raspberry Pi 3.") do not work in the
context of the split device-tree repository[0] (where the directory
structure differs). As with commit 8ee57b8182 ("ARM64: dts: vexpress: Use
a symlink to vexpress-v2m-rs1.dtsi from arch=arm") use symlinks instead.
[0] https://git.kernel.org/cgit/linux/kernel/git/devicetree/devicetree-rebasing.git/
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Lee Jones <lee@kernel.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-rpi-kernel@lists.infradead.org
Cc: arm@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
We've grown our own versions of bug.h, ftrace.h, pci.h and topology.h,
so generating the generic ones as well is unnecessary and a potential
source of build hiccups. At the very least, having them present has
confused my source-indexing tool, and that simply will not do.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Systems with differing CPU i-cache/d-cache line sizes can cause
problems with the cache management by software when the execution
is migrated from one to another. Usually, the application reads
the cache size on a CPU and then uses that length to perform cache
operations. However, if it gets migrated to another CPU with a smaller
cache line size, things could go completely wrong. To prevent such
cases, always use the smallest cache line size among the CPUs. The
kernel CPU feature infrastructure already keeps track of the safe
value for all CPUID registers including CTR. This patch works around
the problem by :
For kernel, dynamically patch the kernel to read the cache size
from the system wide copy of CTR_EL0.
For applications, trap read accesses to CTR_EL0 (by clearing the SCTLR.UCT)
and emulate the mrs instruction to return the system wide safe value
of CTR_EL0.
For faster access (i.e, avoiding to lookup the system wide value of CTR_EL0
via read_system_reg), we keep track of the pointer to table entry for
CTR_EL0 in the CPU feature infrastructure.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Right now we trap some of the user space data cache operations
based on a few Errata (ARM 819472, 826319, 827319 and 824069).
We need to trap userspace access to CTR_EL0, if we detect mismatched
cache line size. Since both these traps share the EC, refactor
the handler a little bit to make it a bit more reader friendly.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
On systems with mismatched i/d cache min line sizes, we need to use
the smallest size possible across all CPUs. This will be done by fetching
the system wide safe value from CPU feature infrastructure.
However the some special users(e.g kexec, hibernate) would need the line
size on the CPU (rather than the system wide), when either the system
wide feature may not be accessible or it is guranteed that the caller
executes with a gurantee of no migration.
Provide another helper which will fetch cache line size on the current CPU.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: James Morse <james.morse@arm.com>
Reviewed-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
adrp uses PC-relative address offset to a page (of 4K size) of
a symbol. If it appears in an alternative code patched in, we
should adjust the offset to reflect the address where it will
be run from. This patch adds support for fixing the offset
for adrp instructions.
Cc: Will Deacon <will.deacon@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Adds helpers for decoding/encoding the PC relative addresses for adrp.
This will be used for handling dynamic patching of 'adrp' instructions
in alternative code patching.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The alternative code patching doesn't check if the replaced instruction
uses a pc relative literal. This could cause silent corruption in the
instruction stream as the instruction will be executed from a different
address than what it was compiled for. Catch all such cases.
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Suggested-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Right now we run through the work around checks on a CPU
from __cpuinfo_store_cpu. There are some problems with that:
1) We initialise the system wide CPU feature registers only after the
Boot CPU updates its cpuinfo. Now, if a work around depends on the
variance of a CPU ID feature (e.g, check for Cache Line size mismatch),
we have no way of performing it cleanly for the boot CPU.
2) It is out of place, invoked from __cpuinfo_store_cpu() in cpuinfo.c. It
is not an obvious place for that.
This patch rearranges the CPU specific capability(aka work around) checks.
1) At the moment we use verify_local_cpu_capabilities() to check if a new
CPU has all the system advertised features. Use this for the secondary CPUs
to perform the work around check. For that we rename
verify_local_cpu_capabilities() => check_local_cpu_capabilities()
which:
If the system wide capabilities haven't been initialised (i.e, the CPU
is activated at the boot), update the system wide detected work arounds.
Otherwise (i.e a CPU hotplugged in later) verify that this CPU conforms to the
system wide capabilities.
2) Boot CPU updates the work arounds from smp_prepare_boot_cpu() after we have
initialised the system wide CPU feature values.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This is a cosmetic change to rename the functions dealing with
the errata work arounds to be more consistent with their naming.
1) check_local_cpu_errata() => update_cpu_errata_workarounds()
check_local_cpu_errata() actually updates the system's errata work
arounds. So rename it to reflect the same.
2) verify_local_cpu_errata() => verify_local_cpu_errata_workarounds()
Use errata_workarounds instead of _errata.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Right now we use 0 as the safe value for CTR_EL0:L1Ip, which is
not defined at the moment. The safer value for the L1Ip should be
the weakest of the policies, which happens to be AIVIVT. While at it,
fix the comment about safe_val.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
1. Remove the old binding code.
2. Read the nid of cpu0 from dts.
3. Fallback the nid of cpu0 to 0 when numa=off is set in bootargs.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
When the deleted code is executed, only the bit of cpu0 was set on
cpu_possible_mask. So that, only set_cpu_numa_node(0, NUMA_NO_NODE); will
be executed. And map_cpu_to_node(0, 0) will soon be called. So these code
can be safely removed.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
To make each percpu area allocated from its local numa node. Without this
patch, all percpu areas will be allocated from the node which cpu0 belongs
to.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
