The SCP firmware on Juno provides access to SoC sensors via the
SCPI. Add the sensor nodes to the device tree to enable this support.
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
This patch adds the CPU clocks so that the CPU DVFS can be enabled.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Cc: Jon Medhurst (Tixy) <tixy@linaro.org>
This patch adds CPU topology on Juno. It will be useful for ther other
IP blocks depending on this topology.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Cc: Jon Medhurst (Tixy) <tixy@linaro.org>
This patch adds support for the MHU mailbox peripheral used on Juno by
application processors to communicate with remote SCP handling most of
the CPU/system power management. It also adds the SRAM reserving the
shared memory and SCPI message protocol using that shared memory.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Cc: Jon Medhurst (Tixy) <tixy@linaro.org>
Define the Porter board dependent part of the VIN0 device node.
Add the device node for Analog Devices ADV7180 video decoder to I2C2 bus.
Add the necessary subnodes to interconnect VIN0 and ADV7180 devices.
This patch is analogous to the commit 8d62f4f753 ("ARM: shmobile:
henninger: add VIN0/ADV7180 DT support") as there are no differences
between the boards in this respect.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Define the Porter board dependent part of the I2C2 device node.
This patch is analogous to the commit 29a647c396 ("ARM: shmobile:
henninger: add I2C2 DT support") as there are no differences between
the boards in this respect.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
We can add more domains node in the future.
This patch add the needed clocks into power-controller.
As the discuess about all the device clocks being listed in
the power-domains itself.
There are several reasons as follows:
Firstly, the clocks need be turned off to save power when
the system enter the suspend state. So we need to enumerate
the clocks in the dts. In order to power domain can turn on and off.
Secondly, the reset-circuit should reset be synchronous on RK3288,
then sync revoked. So we need to enable clocks of all devices.
In other words, we have to enable the clocks before you operate them
if all the device clocks are included in someone domians.
Thirdly, as the chip designs for PM hardhare. we need turn on the noc
clocks, if we are operating the "pd_vio" domain to enter the idle status.
The device's clock be included in domains that needed turn on if do that.
The clocks in the dts are needed to enable before you want to happy work.
At the moment, This patch is very good work for PM hardware.
Also, we can add these clocks in the future if we have some hidden clocks.
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Reviewed-by: Michael Turquette <mturquette@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
[add necessary power-domain properties to keep drm subsys working]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add the iodomains node and reference the correct regulator for each
domain. This also includes adding the currently unused dvp regulators.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Fix some incorrect references to mmc regulators.
vccio_wl for example is the io-voltage supply not the core supply
of the wifi module itself, which is vbat_wl instead.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add the iodomains node and reference the correct regulator for each
domain. This also includes adding the currently unused dvp regulators
and fixing up two regulators to follow the naming in the schematics.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The popmetal board was not included in the list of Rockchip boards,
so was only built when explicitly called with make rk3288-popmetal.dtb
but not in a generic make dtbs, so add the missing entry.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The Radxa Rock 2 Square board is a combination of the Radxa Rock 2 SoM
with the Square baseboard. Add a dtsi for the SoM which can be included
into the dts for the various baseboards (e.g. full and square) and a dts
for the square board.
Currently supported are serial console, wired networking, hdmi output,
eMMC and SD storage and USB.
Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add cap-sd-highspeed and cap-mmc-highspeed for rk3066a-bqcurie2
and rk3066a-rayeager boards to make sd cards run faster.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add cap-sd-highspeed and cap-mmc-highspeed for rk3188-radxarock
board to make sd cards running faster.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The pins for i2c5 can either be configured as "I2C5" which means that
they're controlled by the normal RK3288 I2C controller or as "EDP / HDMI
I2C". It's unclear why EDP is referenced here since apparently setting
the mux to this position enables I2C communication using the dw_hdmi
block with a patch like <https://patchwork.kernel.org/patch/7098101/>.
There appear to be some reasons why using the builtin I2C controller in
dw_hdmi is better than using the normal RK3288 I2C controller, so boards
based on rk3288 might eventually want to use this pinmux if it's known
to work.
Once driver support in dw_hdmi lands, boards would use this by selecting
this pinctrl for the HDMI block and then _not_ specifying a ddc-i2c-bus
and _not_ setting the status to "okay" for i2c5 (which uses the same
pins).
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
With the previous patch ("rk3288: pull up cts lines") this is redundant,
I sent that patch for the same reason this existed here, so the lines don't
wiggle randomly when disconnected.
Signed-off-by: Alexandru M Stan <amstan@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The flow control lines from a user accessible UART are optional,
the user might not have anything connected to those pins.
In order to prevent random interrupts happening and noise affecting
the cts pin should be pulled up.
Note that the default state for that pin on the rk3288 is pulled up,
so this patch merely restores them.
This is similar to what we're already doing with the RX pin,
so it should be safe. At worst it might be a slightly higher power usage
(through ~50 kohms) when the cts is low.
Suggested-by: Neil Hendin <nhendin@chromium.org>
Signed-off-by: Alexandru M Stan <amstan@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
a.k.a. Haier Chromebook 11, and others
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This enables SDMMC0 on the board and gives a basic support for SD cards.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
* Add missing CPG/MSTP Clock Domain for sound on r8a779[01] SoCs
* Tidy up SCI resource region on r8a779[018] SoCs
* Add pinmux for iic0 on Lager board
* Use CCF for audio clock on Lager and Koelsch boards
* Use serial0 and 1 as serial ports on Marzen board
* Use adxl345-specific compatible property for KZM9G board
* Document compat string for Silk board
* Enable GPIO, I2C, PCI, QSPI, USB PHY and HS, and VIN support on r8a7794/Silk
* Add initial support for r8a7791/porter
* Add common file for AA121TD01 panel
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Merge tag 'renesas-dt-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt
Merge "Renesas ARM Based SoC DT Updates for v4.4" from Simon Horman:
* Add missing CPG/MSTP Clock Domain for sound on r8a779[01] SoCs
* Tidy up SCI resource region on r8a779[018] SoCs
* Add pinmux for iic0 on Lager board
* Use CCF for audio clock on Lager and Koelsch boards
* Use serial0 and 1 as serial ports on Marzen board
* Use adxl345-specific compatible property for KZM9G board
* Document compat string for Silk board
* Enable GPIO, I2C, PCI, QSPI, USB PHY and HS, and VIN support on r8a7794/Silk
* Add initial support for r8a7791/porter
* Add common file for AA121TD01 panel
* tag 'renesas-dt-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: (28 commits)
ARM: shmobile: porter: add Ether DT support
ARM: shmobile: fix SILK board name
ARM: shmobile: r8a7794: add HS-USB DT support
ARM: shmobile: dts: Add common file for AA121TD01 panel
ARM: shmobile: r8a7794: link PCI USB devices to USB PHY
ARM: shmobile: silk: enable USB PHY
ARM: shmobile: r8a7794: add USB PHY DT support
ARM: shmobile: porter: initial device tree
ARM: shmobile: add Porter board DT bindings
ARM: shmobile: silk: enable internal PCI
ARM: shmobile: r8a7794: add internal PCI bridge nodes
ARM: shmobile: r8a7790: lager: add pinmux for iic0
ARM: shmobile: r8a7778: tidyup SSI resource region
ARM: shmobile: r8a7791: tidyup SSI resource region
ARM: shmobile: r8a7790: tidyup SSI resource region
ARM: shmobile: lager: use CCF for audio clock
ARM: shmobile: koelsch: use CCF for audio clock
ARM: shmobile: silk: add VIN0/ADV7180 DT support
ARM: shmobile: r8a7794: add VIN DT support
ARM: shmobile: silk: add I2C1 DT support
...
Enable SATA0 device for the Porter board.
This patch is analogous to the commit 5a62ec5700 ("ARM: shmobile:
henninger: enable SATA0") as there are no differences between the boards
in this respect.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
The board DTS are using numeric values instead of the defined GPIO
constanst to express polarity, use them to make the DTS more clear.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
The board DTS are using numeric values instead of the defined GPIO
constanst to express polarity, use them to make the DTS more clear.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
The board DTS are using numeric values instead of the defined GPIO
constanst to express polarity, use them to make the DTS more clear.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
The board DTS are using numeric values instead of the defined GPIO
constanst to express polarity, use them to make the DTS more clear.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
The board DTS are using numeric values instead of the defined GPIO
constanst to express polarity, use them to make the DTS more clear.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
The Peach boards use the EC to store the vboot context information,
so add the corresponding properties on the EC node to indicate so.
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Emilio Lopez <emilio.lopez@collabora.co.uk>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
1. Enable DMA on Exynos4 serial ports. This old patch uncovered
a number of other issues in dmaengine and samsung serial driver.
All of known issues are resolved so finally enable the DMA for UART.
2. Fix incorrect location of display-timings node (FIMD->DP node)
on Arndale, SMDK5250 and SMDK5240 boards.
3. Minor cleanups.
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Merge tag 'samsung-dt-4.4-2' of http://github.com/krzk/linux into v4.4-next/dt-samsung
Device Tree improvements for Exynos based boards (updated pull request):
1. Enable DMA on Exynos4 serial ports. This old patch uncovered
a number of other issues in dmaengine and samsung serial driver.
All of known issues are resolved so finally enable the DMA for UART.
2. Fix incorrect location of display-timings node (FIMD->DP node)
on Arndale, SMDK5250 and SMDK5240 boards.
3. Minor cleanups.
"dcdc1-supply" and "dcdc5-supply" have been dropped, as they are
internally connected and should not be represented in the device
tree.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The Reduced Serial Bus controller is used to talk to the onboard PMIC.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The Reduced Serial Bus controller is used to talk to the onboard PMIC.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This patch adds a device node for the Reduced Serial Bus (RSB)
controller and the defacto pinmux setting to the A23/A33 dtsi.
Since there is only one possible pinmux setting for RSB, just
set it in the dtsi.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Define the Porter board dependent part of the SDHI0/2 device nodes along
with the necessary voltage regulators (note that the Vcc regulators are
dummy -- they are required but don't actually exist on the board). Also,
GPIOs have to be used for the CD and WP signals due to the SDHI driver
constraints...
This patch is analogous to the commit 1299df03d7 ("ARM: shmobile:
henninger: add SDHI0/2 DT support") as there are no differences between
those boards in this respect.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
With future SoCs of keystone2 family, the generic compatible match
may not be sufficient to handle SoC specific handling. So introduce
matches based on SoC compatiblity.
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
This patch adds all UART nodes for the Hi6220 SoC. Recently a board[1] has
been developed to standardize UART access across all the 96boards consumer
edition boards. To use this hardware on HiKey we must configure and enable
UART3. However, to ensure backward compatibility we must keep UART0 enabled
as well.
I have removed the hard coded clock index values in favor of using the ones
already defined in include/dt-bindings/clock/hi6220-clock.h.
Since UART0 needs to be soldered, it has been suggested to use the UART3 as
the default console.
This patch was boot tested on top of next-20150930, with both UART
configurations.
[1] http://www.seeedstudio.com/depot/96Boards-UART-p-2525.html?ref=newInBazaar
Signed-off-by: Tyler Baker <tyler.baker@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- Add base arm64 dts for Statrix 10
- Peripheral updates for Arria10(USB,I2C,UART)
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Merge tag 'socfpga_dts_for_v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into next/dt
Merge "SoCFPGA DTS updates for v4.4" from Dinh Nguyen:
- Add base arm64 dts for Statrix 10
- Peripheral updates for Arria10(USB,I2C,UART)
* tag 'socfpga_dts_for_v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
arm64: dts: Add base stratix 10 dtsi
ARM: socfpga: dts: enable USB and I2C on Arria10 SoCDK
ARM: socfpga: dts: add clock fields for I2C, UART and USB on Arria10
- some DT fixes: dma declaration, led labels
- disable some nodes: PMIC on sama5d3 Xplained, unused i2c1 on at91sam9n12ek
- add some others that were missing: touchscreen, cryto nodes, LCD panels or
image capture properties on various boards
- as the new pinmux for sama5d2 was accepted, we can now add the definitions
and the actual muxing for sama5d2 Xplained board
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Merge tag 'at91-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into next/dt
Merge "First batch of DT changes for 4.4:" from Nicolas Ferre:
- some DT fixes: dma declaration, led labels
- disable some nodes: PMIC on sama5d3 Xplained, unused i2c1 on at91sam9n12ek
- add some others that were missing: touchscreen, cryto nodes, LCD panels or
image capture properties on various boards
- as the new pinmux for sama5d2 was accepted, we can now add the definitions
and the actual muxing for sama5d2 Xplained board
* tag 'at91-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
ARM: at91/dt: sama5d2 Xplained: add device pin muxing
ARM: at91/dt: add sama5d2 pinmux
ARM: at91/dt: ov2640: add hsync/vsync-active property
ARM: at91/dt: sama5d4 xplained: enable the led D8
ARM: at91/dt: sama5d4ek: Add support of QT1070 and Maxtouch
ARM: at91/dt: sama5d4: enable crypto nodes
ARM: at91/dt: sama5d4: add pioD pin mux mask and enable pioD
ARM: at91/dt: sama5d3: update iio config for touchscreen
ARM: at91/dt: sama5d3 xplained: disable pmic
ARM: at91/dt: at91sam9x5: enable iio touchscreen for 9x5ek
ARM: at91/dt: at91sam9n12ek: disable i2c1
ARM: at91/dt: at91sam9n12ek: fix the led labels name
ARM: at91/dt: corrections to i2c1 declaration to sama5d4
Add the base DTS for Altera's SoCFPGA Stratix 10 platform.
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
---
v4: Add a non-zero ranges property for /soc node
v3: change #address-cells and #size-cells to <2>
change the GIC address to 0xfffc1000
update the GIC virtual CPU reg length to 0x2000
v2: use interrupt-affinity for pmu node
On the Arria10 Devkit, the I2C bus has a serial EEPROM and an RTC
hanging off it. Also, enable the USB node.
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Add the required clock fields for all the I2C nodes. Also add missing clock
fields for UART0 and USB1.
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
The regulator-compatible property from the regulator DT binding was
deprecated and the correct approach is to use the node's name.
This patch has no functional changes but by not using a deprecated
property, new DTS based on this one will not carry the same issue.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
This patch moves the display-timings node from fimd to dp to reflect the
device tree bindings change.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
[tomeu.vizoso@collabora.com: Rebased]
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Define the Porter board dependent part of the Ether device node.
Enable DHCP and NFS root for the kernel booting.
This patch is analogous to the commit 26b0d2cf73 ("ARM: shmobile:
henninger: add Ether DT support") as there are no differences between
those boards in this respect.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This patch adds a PWM node in the Berlin BG2CD device tree, using the
newly added Berlin PWM driver.
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
This patch adds a PWM node in the Berlin BG2 device tree, using the
newly added Berlin PWM driver.
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
This patch adds a PWM node in the Berlin BG2Q device tree, using the
newly added Berlin PWM driver.
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
This allows voltage-scaling with cpufreq-dt. The reliability of
voltage-scaling has been checked by reducing the voltage of all
operating points by 0.025V (for extra safety headroom) and running
libjpeg-turbo decoding tests on 5 pcDuino2 boards. It means that
the standard sun4i voltages should be perfectly fine too.
Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Define the R8A7794 generic part of the HS-USB device node.
It is up to the board file to enable the device.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Pull strscpy string copy function implementation from Chris Metcalf.
Chris sent this during the merge window, but I waffled back and forth on
the pull request, which is why it's going in only now.
The new "strscpy()" function is definitely easier to use and more secure
than either strncpy() or strlcpy(), both of which are horrible nasty
interfaces that have serious and irredeemable problems.
strncpy() has a useless return value, and doesn't NUL-terminate an
overlong result. To make matters worse, it pads a short result with
zeroes, which is a performance disaster if you have big buffers.
strlcpy(), by contrast, is a mis-designed "fix" for strlcpy(), lacking
the insane NUL padding, but having a differently broken return value
which returns the original length of the source string. Which means
that it will read characters past the count from the source buffer, and
you have to trust the source to be properly terminated. It also makes
error handling fragile, since the test for overflow is unnecessarily
subtle.
strscpy() avoids both these problems, guaranteeing the NUL termination
(but not excessive padding) if the destination size wasn't zero, and
making the overflow condition very obvious by returning -E2BIG. It also
doesn't read past the size of the source, and can thus be used for
untrusted source data too.
So why did I waffle about this for so long?
Every time we introduce a new-and-improved interface, people start doing
these interminable series of trivial conversion patches.
And every time that happens, somebody does some silly mistake, and the
conversion patch to the improved interface actually makes things worse.
Because the patch is mindnumbing and trivial, nobody has the attention
span to look at it carefully, and it's usually done over large swatches
of source code which means that not every conversion gets tested.
So I'm pulling the strscpy() support because it *is* a better interface.
But I will refuse to pull mindless conversion patches. Use this in
places where it makes sense, but don't do trivial patches to fix things
that aren't actually known to be broken.
* 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
tile: use global strscpy() rather than private copy
string: provide strscpy()
Make asm/word-at-a-time.h available on all architectures
Pull MIPS updates from Ralf Baechle:
"This week's round of MIPS fixes:
- Fix JZ4740 build
- Fix fallback to GFP_DMA
- FP seccomp in case of ENOSYS
- Fix bootmem panic
- A number of FP and CPS fixes
- Wire up new syscalls
- Make sure BPF assembler objects can properly be disassembled
- Fix BPF assembler code for MIPS I"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: scall: Always run the seccomp syscall filters
MIPS: Octeon: Fix kernel panic on startup from memory corruption
MIPS: Fix R2300 FP context switch handling
MIPS: Fix octeon FP context switch handling
MIPS: BPF: Fix load delay slots.
MIPS: BPF: Do all exports of symbols with FEXPORT().
MIPS: Fix the build on jz4740 after removing the custom gpio.h
MIPS: CPS: #ifdef on CONFIG_MIPS_MT_SMP rather than CONFIG_MIPS_MT
MIPS: CPS: Don't include MT code in non-MT kernels.
MIPS: CPS: Stop dangling delay slot from has_mt.
MIPS: dma-default: Fix 32-bit fall back to GFP_DMA
MIPS: Wire up userfaultfd and membarrier syscalls.
The MIPS syscall handler code used to return -ENOSYS on invalid
syscalls. Whilst this is expected, it caused problems for seccomp
filters because the said filters never had the change to run since
the code returned -ENOSYS before triggering them. This caused
problems on the chromium testsuite for filters looking for invalid
syscalls. This has now changed and the seccomp filters are always
run even if the syscall is invalid. We return -ENOSYS once we
return from the seccomp filters. Moreover, similar codepaths have
been merged in the process which simplifies somewhat the overall
syscall code.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11236/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Pull x86 fixes from Ingo Molnar:
"Fixes all around the map: W+X kernel mapping fix, WCHAN fixes, two
build failure fixes for corner case configs, x32 header fix and a
speling fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/headers/uapi: Fix __BITS_PER_LONG value for x32 builds
x86/mm: Set NX on gap between __ex_table and rodata
x86/kexec: Fix kexec crash in syscall kexec_file_load()
x86/process: Unify 32bit and 64bit implementations of get_wchan()
x86/process: Add proper bound checks in 64bit get_wchan()
x86, efi, kasan: Fix build failure on !KASAN && KMEMCHECK=y kernels
x86/hyperv: Fix the build in the !CONFIG_KEXEC_CORE case
x86/cpufeatures: Correct spelling of the HWP_NOTIFY flag
Pull EFI fixes from Ingo Molnar:
"Two EFI fixes: one for x86, one for ARM, fixing a boot crash bug that
can trigger under newer EFI firmware"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
arm64/efi: Fix boot crash by not padding between EFI_MEMORY_RUNTIME regions
x86/efi: Fix boot crash by mapping EFI memmap entries bottom-up at runtime, instead of top-down
inadvertently changing a huge pmd page into a pmd table entry.
- Function graph tracer panic fix caused by the return_to_handler code
corrupting the multi-regs function return value (composite types).
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Fix for transparent huge page change_protection() logic which was
inadvertently changing a huge pmd page into a pmd table entry.
- Function graph tracer panic fix caused by the return_to_handler code
corrupting the multi-regs function return value (composite types).
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: ftrace: fix function_graph tracer panic
arm64: Fix THP protection change logic
Pull m68k updates from Geert Uytterhoeven:
"Summary:
- Fix for accidental modification of arguments of syscall functions
- Wire up new syscalls
- Update defconfigs"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k/defconfig: Update defconfigs for v4.3-rc1
m68k: Define asmlinkage_protect
m68k: Wire up membarrier
m68k: Wire up userfaultfd
m68k: Wire up direct socket calls
During development it was found that a number of builds would panic
during the kernel init process, more specifically in 'delayed_fput()'.
The panic showed the kernel trying to access a memory address of
'0xb7fdc00' while traversing the 'delayed_fput_list' structure.
Comparing this memory address to the value of the pointer used on
builds that did not panic confirmed that the pointer on crashing
builds must have been corrupted at some stage earlier in the init
process.
By traversing the list earlier and earlier in the code it was found
that 'plat_mem_setup()' was responsible for corrupting the list.
Specifically the line:
memory = cvmx_bootmem_phy_alloc(mem_alloc_size,
__pa_symbol(&__init_end), -1,
0x100000,
CVMX_BOOTMEM_FLAG_NO_LOCKING);
Which would eventually call:
cvmx_bootmem_phy_set_size(new_ent_addr,
cvmx_bootmem_phy_get_size
(ent_addr) -
(desired_min_addr -
ent_addr));
Where 'new_ent_addr'=0x4800000 (the address of 'delayed_fput_list')
and the second argument (size)=0xb7fdc00 (the address causing the
kernel panic). The job of this part of 'plat_mem_setup()' is to
allocate chunks of memory for the kernel to use. At the start of
each chunk of memory the size of the chunk is written, hence the
value 0xb7fdc00 is written onto memory at 0x4800000, therefore the
kernel panics when it goes back to access 'delayed_fput_list' later
on in the initialisation process.
On builds that were not crashing it was found that the compiler had
placed 'delayed_fput_list' at 0x4800008, meaning it wasn't corrupted
(but something else in memory was overwritten).
As can be seen in the first function call above the code begins to
allocate chunks of memory beginning from the symbol '__init_end'.
The MIPS linker script (vmlinux.lds.S) however defines the .bss
section to begin after '__init_end'. Therefore memory within the
.bss section is allocated to the kernel to use (System.map shows
'delayed_fput_list' and other kernel structures to be in .bss).
To stop the kernel panic (and the .bss section being corrupted)
memory should begin being allocated from the symbol '_end'.
Signed-off-by: Matt Bennett <matt.bennett@alliedtelesis.co.nz>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: aleksey.makarov@auriga.com
Patchwork: https://patchwork.linux-mips.org/patch/11251/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Commit 1a3d59579b ("MIPS: Tidy up FPU context switching") removed FP
context saving from the asm-written resume function in favour of reusing
existing code to perform the same task. However it only removed the FP
context saving code from the r4k_switch.S implementation of resume.
Remove it from the r2300_switch.S implementation too in order to prevent
attempting to save the FP context twice, which would likely lead to an
exception from the second save because the FPU had already been disabled
by the first save.
This patch has only been build tested, using rbtx49xx_defconfig.
Fixes: 1a3d59579b ("MIPS: Tidy up FPU context switching")
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-kernel@vger.kernel.org
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/11167/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The entire bpf_jit_asm.S is written in noreorder mode because "we know
better" according to a comment. This also prevented the assembler from
throwing in the required NOPs for MIPS I processors which have no
load-use interlock, thus the load's consumer might end up using the
old value of the register from prior to the load.
Fixed by putting the assembler in reorder mode for just the affected
load instructions. This is not enough for gas to actually try to be
clever by looking at the next instruction and inserting a nop only
when needed but as the comment said "we know better", so getting gas
to unconditionally emit a NOP is just right in this case and prevents
adding further ifdefery.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
On x32, gcc predefines __x86_64__ but long is only 32-bit. Use
__ILP32__ to distinguish x32.
Fixes this compiler error in perf:
tools/include/asm-generic/bitops/__ffs.h: In function '__ffs':
tools/include/asm-generic/bitops/__ffs.h:19:8: error: right shift count >= width of type [-Werror=shift-count-overflow]
word >>= 32;
^
This isn't sufficient to build perf for x32, though.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1443660043.2730.15.camel@decadent.org.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Unused space between the end of __ex_table and the start of
rodata can be left W+x in the kernel page tables. Extend the
setting of the NX bit to cover this gap by starting from
text_end rather than rodata_start.
Before:
---[ High Kernel Mapping ]---
0xffffffff80000000-0xffffffff81000000 16M pmd
0xffffffff81000000-0xffffffff81600000 6M ro PSE GLB x pmd
0xffffffff81600000-0xffffffff81754000 1360K ro GLB x pte
0xffffffff81754000-0xffffffff81800000 688K RW GLB x pte
0xffffffff81800000-0xffffffff81a00000 2M ro PSE GLB NX pmd
0xffffffff81a00000-0xffffffff81b3b000 1260K ro GLB NX pte
0xffffffff81b3b000-0xffffffff82000000 4884K RW GLB NX pte
0xffffffff82000000-0xffffffff82200000 2M RW PSE GLB NX pmd
0xffffffff82200000-0xffffffffa0000000 478M pmd
After:
---[ High Kernel Mapping ]---
0xffffffff80000000-0xffffffff81000000 16M pmd
0xffffffff81000000-0xffffffff81600000 6M ro PSE GLB x pmd
0xffffffff81600000-0xffffffff81754000 1360K ro GLB x pte
0xffffffff81754000-0xffffffff81800000 688K RW GLB NX pte
0xffffffff81800000-0xffffffff81a00000 2M ro PSE GLB NX pmd
0xffffffff81a00000-0xffffffff81b3b000 1260K ro GLB NX pte
0xffffffff81b3b000-0xffffffff82000000 4884K RW GLB NX pte
0xffffffff82000000-0xffffffff82200000 2M RW PSE GLB NX pmd
0xffffffff82200000-0xffffffffa0000000 478M pmd
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: <stable@vger.kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1443704662-3138-1-git-send-email-sds@tycho.nsa.gov
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The original bug is a page fault crash that sometimes happens
on big machines when preparing ELF headers:
BUG: unable to handle kernel paging request at ffffc90613fc9000
IP: [<ffffffff8103d645>] prepare_elf64_ram_headers_callback+0x165/0x260
The bug is caused by us under-counting the number of memory ranges
and subsequently not allocating enough ELF header space for them.
The bug is typically masked on smaller systems, because the ELF header
allocation is rounded up to the next page.
This patch modifies the code in fill_up_crash_elf_data() by using
walk_system_ram_res() instead of walk_system_ram_range() to correctly
count the max number of crash memory ranges. That's because the
walk_system_ram_range() filters out small memory regions that
reside in the same page, but walk_system_ram_res() does not.
Here's how I found the bug:
After tracing prepare_elf64_headers() and prepare_elf64_ram_headers_callback(),
the code uses walk_system_ram_res() to fill-in crash memory regions information
to the program header, so it counts those small memory regions that
reside in a page area.
But, when the kernel was using walk_system_ram_range() in
fill_up_crash_elf_data() to count the number of crash memory regions,
it filters out small regions.
I printed those small memory regions, for example:
kexec: Get nr_ram ranges. vaddr=0xffff880077592258 paddr=0x77592258, sz=0xdc0
Based on the code in walk_system_ram_range(), this memory region
will be filtered out:
pfn = (0x77592258 + 0x1000 - 1) >> 12 = 0x77593
end_pfn = (0x77592258 + 0xfc0 -1 + 1) >> 12 = 0x77593
end_pfn - pfn = 0x77593 - 0x77593 = 0 <=== if (end_pfn > pfn) is FALSE
So, the max_nr_ranges that's counted by the kernel doesn't include
small memory regions - causing us to under-allocate the required space.
That causes the page fault crash that happens in a later code path
when preparing ELF headers.
This bug is not easy to reproduce on small machines that have few
CPUs, because the allocated page aligned ELF buffer has more free
space to cover those small memory regions' PT_LOAD headers.
Signed-off-by: Lee, Chun-Yi <jlee@suse.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: kexec@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/1443531537-29436-1-git-send-email-jlee@suse.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The Mitsubishi AA121TD01 panel is commonly used with the Marzen, Lager
and Koelsch boards. Create a .dtsi file that describe the panel and its
connection to the board.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Merge misc fixes from Andrew Morton:
"12 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
dmapool: fix overflow condition in pool_find_page()
thermal: avoid division by zero in power allocator
memcg: remove pcp_counter_lock
kprobes: use _do_fork() in samples to make them work again
drivers/input/joystick/Kconfig: zhenhua.c needs BITREVERSE
memcg: make mem_cgroup_read_stat() unsigned
memcg: fix dirty page migration
dax: fix NULL pointer in __dax_pmd_fault()
mm: hugetlbfs: skip shared VMAs when unmapping private pages to satisfy a fault
mm/slab: fix unexpected index mapping result of kmalloc_size(INDEX_NODE+1)
userfaultfd: remove kernel header include from uapi header
arch/x86/include/asm/efi.h: fix build failure
Describe the PCI USB devices that are behind the PCI bridges, adding necessary
links to the USB PHY device.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Enable USB PHY device for the SILK board.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Define the R8A7794 generic part of the USB PHY device node. It is up to the
board file to enable the device.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Add the initial device tree for the R8A7791 SoC based Porter low cost board
(which is a slightly modified version of the Henninger board).
SCIF0 serial port support is included, so that the serial console can work.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Bugs have trickled in for a new feature in 4.2 (MTRR support in guests)
so I'm reverting it all; let's not make this -rc period busier for KVM
than it's been so far. This covers the four reverts from me.
The fifth patch is being reverted because Radim found a bug in the
implementation of stable scheduler clock, *but* also managed to implement
the feature entirely without hypervisor support. So instead of fixing
the hypervisor side we can remove it completely; 4.4 will get the new
implementation.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"(Relatively) a lot of reverts, mostly.
Bugs have trickled in for a new feature in 4.2 (MTRR support in
guests) so I'm reverting it all; let's not make this -rc period busier
for KVM than it's been so far. This covers the four reverts from me.
The fifth patch is being reverted because Radim found a bug in the
implementation of stable scheduler clock, *but* also managed to
implement the feature entirely without hypervisor support. So instead
of fixing the hypervisor side we can remove it completely; 4.4 will
get the new implementation"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
Use WARN_ON_ONCE for missing X86_FEATURE_NRIPS
Update KVM homepage Url
Revert "KVM: SVM: use NPT page attributes"
Revert "KVM: svm: handle KVM_X86_QUIRK_CD_NW_CLEARED in svm_get_mt_mask"
Revert "KVM: SVM: Sync g_pat with guest-written PAT value"
Revert "KVM: x86: apply guest MTRR virtualization on host reserved pages"
Revert "KVM: x86: zero kvmclock_offset when vcpu0 initializes kvmclock system MSR"
6910fa1 ("arm64: enable PTE type bit in the mask for pte_modify") fixes
a problem whereby a large block of PROT_NONE mapped memory is
incorrectly mapped as block descriptors when mprotect is called.
Unfortunately, a subtle bug was introduced by this fix to the THP logic.
If one mmaps a large block of memory, then faults it such that it is
collapsed into THPs; resulting calls to mprotect on this area of memory
will lead to incorrect table descriptors being written instead of block
descriptors. This is because pmd_modify calls pte_modify which is now
allowed to modify the type of the page table entry.
This patch reverts commit 6910fa16db, and
fixes the problem it was trying to address by adjusting PAGE_NONE to
represent a table entry. Thus no change in pte type is required when
moving from PROT_NONE to a different protection.
Fixes: 6910fa16db ("arm64: enable PTE type bit in the mask for pte_modify")
Cc: <stable@vger.kernel.org> # 4.0+
Cc: Feng Kan <fkan@apm.com>
Reported-by: Ganapatrao Kulkarni <Ganapatrao.Kulkarni@caviumnetworks.com>
Tested-by: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
FEXPORT also marks the symbol as code using .type symbol, @function.
Without objdump -d will output only a hexdump for code following the
affected symbols.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The A20-SOM-EVB is a reference design of a 2-layer board for the
A20-SOM.
It expands the features of A20-SOM by adding VGA connector, HDMI
connector, audio In/Out, LCD connector, 2 Mpix camera, gigabit
Ethernet, SATA, USB-OTG and 2 USB hosts.
Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The cpu feature flags are not ever going to change, so warning
everytime can cause a lot of kernel log spam
(in our case more than 10GB/hour).
The warning seems to only occur when nested virtualization is
enabled, so it's probably triggered by a KVM bug. This is a
sensible and safe change anyway, and the KVM bug fix might not
be suitable for stable releases anyway.
Cc: stable@vger.kernel.org
Signed-off-by: Dirk Mueller <dmueller@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The hummingbird A31 has 2 rtc devices available: one in the SoC,
and a pcf8563 external rtc on i2c2.
For some unknown reason, the onboard backup battery alone can not
supply enough power to the internal rtc. When external power is
removed, the internal rtc would reset. Hence we want to use the
external one by default.
Add aliases for the rtc devices with the external one as rtc0.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This reverts commit 3c2e7f7de3.
Initializing the mapping from MTRR to PAT values was reported to
fail nondeterministically, and it also caused extremely slow boot
(due to caching getting disabled---bug 103321) with assigned devices.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Reported-by: Sebastian Schuette <dracon@ewetel.net>
Cc: stable@vger.kernel.org # 4.2+
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This reverts commit 5492830370.
It builds on the commit that is being reverted next.
Cc: stable@vger.kernel.org # 4.2+
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This reverts commit e098223b78,
which has a dependency on other commits being reverted.
Cc: stable@vger.kernel.org # 4.2+
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This reverts commit fd717f1101.
It was reported to cause Machine Check Exceptions (bug 104091).
Reported-by: harn-solo@gmx.de
Cc: stable@vger.kernel.org # 4.2+
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The new Properties Table feature introduced in UEFIv2.5 may
split memory regions that cover PE/COFF memory images into
separate code and data regions. Since these regions only differ
in the type (runtime code vs runtime data) and the permission
bits, but not in the memory type attributes (UC/WC/WT/WB), the
spec does not require them to be aligned to 64 KB.
Since the relative offset of PE/COFF .text and .data segments
cannot be changed on the fly, this means that we can no longer
pad out those regions to be mappable using 64 KB pages.
Unfortunately, there is no annotation in the UEFI memory map
that identifies data regions that were split off from a code
region, so we must apply this logic to all adjacent runtime
regions whose attributes only differ in the permission bits.
So instead of rounding each memory region to 64 KB alignment at
both ends, only round down regions that are not directly
preceded by another runtime region with the same type
attributes. Since the UEFI spec does not mandate that the memory
map be sorted, this means we also need to sort it first.
Note that this change will result in all EFI_MEMORY_RUNTIME
regions whose start addresses are not aligned to the OS page
size to be mapped with executable permissions (i.e., on kernels
compiled with 64 KB pages). However, since these mappings are
only active during the time that UEFI Runtime Services are being
invoked, the window for abuse is rather small.
Tested-by: Mark Salter <msalter@redhat.com>
Tested-by: Mark Rutland <mark.rutland@arm.com> [UEFI 2.4 only]
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Reviewed-by: Mark Salter <msalter@redhat.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Cc: <stable@vger.kernel.org> # v4.0+
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1443218539-7610-3-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Beginning with UEFI v2.5 EFI_PROPERTIES_TABLE was introduced
that signals that the firmware PE/COFF loader supports splitting
code and data sections of PE/COFF images into separate EFI
memory map entries. This allows the kernel to map those regions
with strict memory protections, e.g. EFI_MEMORY_RO for code,
EFI_MEMORY_XP for data, etc.
Unfortunately, an unwritten requirement of this new feature is
that the regions need to be mapped with the same offsets
relative to each other as observed in the EFI memory map. If
this is not done crashes like this may occur,
BUG: unable to handle kernel paging request at fffffffefe6086dd
IP: [<fffffffefe6086dd>] 0xfffffffefe6086dd
Call Trace:
[<ffffffff8104c90e>] efi_call+0x7e/0x100
[<ffffffff81602091>] ? virt_efi_set_variable+0x61/0x90
[<ffffffff8104c583>] efi_delete_dummy_variable+0x63/0x70
[<ffffffff81f4e4aa>] efi_enter_virtual_mode+0x383/0x392
[<ffffffff81f37e1b>] start_kernel+0x38a/0x417
[<ffffffff81f37495>] x86_64_start_reservations+0x2a/0x2c
[<ffffffff81f37582>] x86_64_start_kernel+0xeb/0xef
Here 0xfffffffefe6086dd refers to an address the firmware
expects to be mapped but which the OS never claimed was mapped.
The issue is that included in these regions are relative
addresses to other regions which were emitted by the firmware
toolchain before the "splitting" of sections occurred at
runtime.
Needless to say, we don't satisfy this unwritten requirement on
x86_64 and instead map the EFI memory map entries in reverse
order. The above crash is almost certainly triggerable with any
kernel newer than v3.13 because that's when we rewrote the EFI
runtime region mapping code, in commit d2f7cbe7b2 ("x86/efi:
Runtime services virtual mapping"). For kernel versions before
v3.13 things may work by pure luck depending on the
fragmentation of the kernel virtual address space at the time we
map the EFI regions.
Instead of mapping the EFI memory map entries in reverse order,
where entry N has a higher virtual address than entry N+1, map
them in the same order as they appear in the EFI memory map to
preserve this relative offset between regions.
This patch has been kept as small as possible with the intention
that it should be applied aggressively to stable and
distribution kernels. It is very much a bugfix rather than
support for a new feature, since when EFI_PROPERTIES_TABLE is
enabled we must map things as outlined above to even boot - we
have no way of asking the firmware not to split the code/data
regions.
In fact, this patch doesn't even make use of the more strict
memory protections available in UEFI v2.5. That will come later.
Suggested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Cc: <stable@vger.kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Chun-Yi <jlee@suse.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: James Bottomley <JBottomley@Odin.com>
Cc: Lee, Chun-Yi <jlee@suse.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Jones <pjones@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1443218539-7610-2-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Somehow the wrong version of the patch to remove the use of custom
gpio.h on mips has been merged. This patch add the missing fixes for a
build error on jz4740 because linux/gpio.h doesn't provide any machine
specfics definitions anymore.
Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11089/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Add the I2C0 bus and the some of the I2C devices on the Hitex
LPC4350 eval board.
Signed-off-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar>
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
The Hitex LPC4350 eval board has a Spansion S25SL064P SPI-NOR Flash connected
to the SPIFI perherial.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Most of the peripherals on LPC18xx/43xx devices have their reset
lines hooked up to internal reset controller (RGU). Add reset
entries to the device nodes so a driver can use the reset line.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
NXP LPC SoCs family, which includes LPC18xx/LPC43xx, provides a State
Configurable Timer (SCT) which can be configured as a Pulse Width
Modulator.
Signed-off-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar>
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Add node for the watchdog timer found on LPC18xx/LPC43xx.
Signed-off-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar>
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Add dmas entries to the four UART peripherals on LPC18xx/43xx devices
so that DMA can be used to transfer data.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Add dmas entries to the two SSP peripherals on LPC18xx/43xx devices
so that DMA can be used to transfer data.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Dmitry Vyukov reported the following using trinity and the memory
error detector AddressSanitizer
(https://code.google.com/p/address-sanitizer/wiki/AddressSanitizerForKernel).
[ 124.575597] ERROR: AddressSanitizer: heap-buffer-overflow on
address ffff88002e280000
[ 124.576801] ffff88002e280000 is located 131938492886538 bytes to
the left of 28857600-byte region [ffffffff81282e0a, ffffffff82e0830a)
[ 124.578633] Accessed by thread T10915:
[ 124.579295] inlined in describe_heap_address
./arch/x86/mm/asan/report.c:164
[ 124.579295] #0 ffffffff810dd277 in asan_report_error
./arch/x86/mm/asan/report.c:278
[ 124.580137] #1 ffffffff810dc6a0 in asan_check_region
./arch/x86/mm/asan/asan.c:37
[ 124.581050] #2 ffffffff810dd423 in __tsan_read8 ??:0
[ 124.581893] #3 ffffffff8107c093 in get_wchan
./arch/x86/kernel/process_64.c:444
The address checks in the 64bit implementation of get_wchan() are
wrong in several ways:
- The lower bound of the stack is not the start of the stack
page. It's the start of the stack page plus sizeof (struct
thread_info)
- The upper bound must be:
top_of_stack - TOP_OF_KERNEL_STACK_PADDING - 2 * sizeof(unsigned long).
The 2 * sizeof(unsigned long) is required because the stack pointer
points at the frame pointer. The layout on the stack is: ... IP FP
... IP FP. So we need to make sure that both IP and FP are in the
bounds.
Fix the bound checks and get rid of the mix of numeric constants, u64
and unsigned long. Making all unsigned long allows us to use the same
function for 32bit as well.
Use READ_ONCE() when accessing the stack. This does not prevent a
concurrent wakeup of the task and the stack changing, but at least it
avoids TOCTOU.
Also check task state at the end of the loop. Again that does not
prevent concurrent changes, but it avoids walking for nothing.
Add proper comments while at it.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Based-on-patch-from: Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@alien8.de>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Kostya Serebryany <kcc@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: kasan-dev <kasan-dev@googlegroups.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20150930083302.694788319@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The CONFIG_MIPS_MT symbol can be selected by CONFIG_MIPS_VPE_LOADER in
addition to CONFIG_MIPS_MT_SMP. We only want MT code in the CPS SMP boot
vector if we're using MT for SMP. Thus switch the config symbol we ifdef
against to CONFIG_MIPS_MT_SMP.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: <stable@vger.kernel.org> # 3.16+
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10867/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The MT-specific code in mips_cps_boot_vpes can safely be omitted from
kernels which don't support MT, with the default VPE==0 case being used
as it would be after the has_mt (Config3.MT) check failed at runtime.
Discarding the code entirely will save us a few bytes & allow cleaner
handling of MT ASE instructions by later patches.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: <stable@vger.kernel.org> # 3.16+
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10866/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The has_mt macro ended with a branch, leaving its callers with a delay
slot that would be executed if Config3.MT is not set. However it would
not be executed if Config3 (or earlier Config registers) don't exist
which makes it somewhat inconsistent at best. Fill the delay slot in the
macro & fix the mips_cps_boot_vpes caller appropriately.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: <stable@vger.kernel.org> # 3.16+
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10865/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
If there is a DMA zone (usually 24bit = 16MB I believe), but no DMA32
zone, as is the case for some 32-bit kernels, then massage_gfp_flags()
will cause DMA memory allocated for devices with a 32..63-bit
coherent_dma_mask to fall back to using __GFP_DMA, even though there may
only be 32-bits of physical address available anyway.
Correct that case to compare against a mask the size of phys_addr_t
instead of always using a 64-bit mask.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Fixes: a2e715a86c ("MIPS: DMA: Fix computation of DMA flags from device's coherent_dma_mask.")
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 2.6.36+
Patchwork: https://patchwork.linux-mips.org/patch/9610/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This patch configure correctly the MMC-0 clock for STiH418 platform.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Enable internal AHB-PCI bridges for the USB EHCI/OHCI controllers attached to
them.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Add device nodes for the R8A7794 internal PCI bridge devices.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Now we have default pinconfig groups for each SPI
controller ensure it is used by the SPI controller
node.
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
This patch adds the RMII pinctrl support for the Synopsys
MAC on STiH407 SoCs.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
This patch adds the pinconfig for IRB TX and IRB UHF.
Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
This patch adds the missing SD pinctrl config
for mmc/sd controller 0. This is required to enable the
B2144A daughter board that exposes this controller as a sd
slot.
Signed-off-by: Nebil BEN MEFTEH <nebil.ben-mefteh@st.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
This patch adds the pin config for systrace for
STiH407 family silicon.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
This patch adds NAND flash support controller pin configuration
for STiH407 family silicon.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
This patch adds the pin configuration for the NOR flash controller.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Add missing serial 3 pinctrl config. This can be used
on b2206 HVK, where it defaults to PIO31[3] & PIO31[4],
alternate 1.
Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Acked-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
This patch adds the spi pinctrl configurations for all SPI
controllers, and also the alternate muxings which
can be used depending on board design.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
i2c3 controller can use several sets of pins depending
on board design. This patch adds the missing alternate
pinconfigs.
Signed-off-by: Seraphin Bonnaffe <seraphin.bonnaffe@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
This pin setup provides the correct configuration in order to
interact with the CEC HW.
Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
Signed-off-by: Nicolas Vanhaelewyn <nicolas.vanhaelewyn@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
There are 2 revisions of the Exynos5250 Snow Chromebook that were
shipped: Rev4 and Rev5. The only difference between these 2 revisions
is the codec, Rev4 has a max98095 codec while Rev5 has a max98090.
Mainline only supports Rev4 so this patch moves the common device
nodes to a DTSI file and adds a DTS for the Exynos5250 Snow Rev5.
The Snow Rev5 DTS is based on the DTS found in the ChromiumOS 3.8
tree.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Tested-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
Recent changes in the Hyper-V driver:
b4370df2b1 ("Drivers: hv: vmbus: add special crash handler")
broke the build when CONFIG_KEXEC_CORE is not set:
arch/x86/built-in.o: In function `hv_machine_crash_shutdown':
arch/x86/kernel/cpu/mshyperv.c:112: undefined reference to `native_machine_crash_shutdown'
Decorate all kexec related code with #ifdef CONFIG_KEXEC_CORE.
Reported-by: Jim Davis <jim.epost@gmail.com>
Reported-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: devel@linuxdriverproject.org
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1443002577-25370-1-git-send-email-vkuznets@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
A board might not expose the USB2.0 ports, so disable them by default in SoC
file, and enable them in b2120 board.
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Define the crypto SRAM ranges so that the resources referenced by the
sa-sram node can be properly extracted from the DT.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Add crypto related nodes in armada-375.dtsi.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Define the crypto SRAM ranges so that the resources referenced by the
sa-sram node can be properly extracted from the DT.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Define the crypto SRAM ranges so that the resources referenced by the
sa-sram node can be properly extracted from the DT.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
The display nodes are common to both STiH407 and STiH410, move them to the
family file.
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
The PWM may not be used on some boards, so enable them only the board file.
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Add crypto related nodes to armada-xp.dtsi.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
This commit adds the description of the CPU config registers in the
Armada 370 and Armada XP Device Tree. Since the registers are in fact
different between the two SoCs, a different compatible string is used.
Note that the Armada 370 node is currently unused, but it is
nonetheless added for consistency with the addition on the Armada XP
side.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
The Wits Pro A20 DKT is an A20 Development KiT with 1G RAM, 4G NAND,
sdio wifi, 1Gbit ethernet, 1024x768 lcd screen with ft5x_ts touchscreen
and a ton of IO connectors.
Note there seem to be multiple sdcard slots on the board (4 in total), but
other then mmc0 none of these are hooked up by default, there is a ton of
dip-switches which likely allow hooking some of these up, but the
documentation of the board only describes the use of a fraction of them,
so for now we only support mmc0.
Signed-off-by: Jelle de Jong <jelledejong@powercraft.nl>
[hdegoede@redhat.com: Use pwrseq instead of a regulator for the wifi-en pin]
[hdegoede@redhat.com: Add support for OOB irq for the sdio wifi]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Enable the otg/drc usb controller on the Wexler TAB7200 tablet.
Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Add usb otg support for Orange pi, based on Orange pi mini.
Signed-off-by: Reinder de Haan <patchesrdh@mveas.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Enable the otg/drc usb controller on the orangepi-mini.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Add a node representing the usb power supply part of the axp209 pmic, note
that the usb power supply and the (to be added later) ac power supply will
each have their own child-node, so that they can be separately specified
as power-supply for other nodes using a power-supply property with a
phandle pointing to the right axp209 child-node.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Use 'ldoN_reg: LDON' syntax and drop the deprecated
'regulator-compatible' property.
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
The pinctrl settings in i2c_0 and i2c_1 are already provided
through the exynos4 dtsi.
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
The change corrects cpu compatible property to a defined one,
see Documentation/devicetree/bindings/arm/cpus.txt
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Pull arch/tile bugfix from Chris Metcalf:
"This fixes a bug in 'make allmodconfig'"
* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
tile: fix build failure
When building with allmodconfig the build was failing with the error:
arch/tile/kernel/usb.c:70:1: warning: data definition has no type or storage class [enabled by default]
arch/tile/kernel/usb.c:70:1: error: type defaults to 'int' in declaration of 'arch_initcall' [-Werror=implicit-int]
arch/tile/kernel/usb.c:70:1: warning: parameter names (without types) in function declaration [enabled by default]
arch/tile/kernel/usb.c:63:19: warning: 'tilegx_usb_init' defined but not used [-Wunused-function]
Include linux/module.h to resolve the build failure.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Shifting pvclock_vcpu_time_info.system_time on write to KVM system time
MSR is a change of ABI. Probably only 2.6.16 based SLES 10 breaks due
to its custom enhancements to kvmclock, but KVM never declared the MSR
only for one-shot initialization. (Doc says that only one write is
needed.)
This reverts commit b7e60c5aed.
And adds a note to the definition of PVCLOCK_COUNTS_FROM_ZERO.
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Acked-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
A33 Q8 tablets with the ippo-q8h-v1.2 pcb will work fine with the
generic q8-tablet.dts and given the many variants of PCBs found in
Q8 tablets using such a specific dts name was a mistake in hindsight.
We cannot just drop the ippo-q8h-v1.2.dtb as existing u-boot configs
may very well point to it.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This is a generic dts file for A33 based q8 formfactor tablets,
this is intended to replace both sun8i-a33-ippo-q8h-v1.2.dts and
sun8i-a33-et-q8-v1.6.dts (these can be fully dropped after a
transition period).
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Make sure the compiler does not modify arguments of syscall functions.
This can happen if the compiler generates a tailcall to another
function. For example, without asmlinkage_protect sys_openat is compiled
into this function:
sys_openat:
clr.l %d0
move.w 18(%sp),%d0
move.l %d0,16(%sp)
jbra do_sys_open
Note how the fourth argument is modified in place, modifying the register
%d4 that gets restored from this stack slot when the function returns to
user-space. The caller may expect the register to be unmodified across
system calls.
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: stable@vger.kernel.org
Pull MIPS fixes from Ralf Baechle:
- Properly setup irq handling for ATH79 platforms
- Fix bootmem mapstart calculation for contiguous maps
- Handle little endian and older CPUs correct in BPF
- Fix console for Fulong 2E systems
- Handle FTLB correctly on R6 CPUs
- Fixes for CM, GIC and MAAR support code
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Initialise MAARs on secondary CPUs
MIPS: print MAAR configuration during boot
MIPS: mm: compile maar_init unconditionally
irqchip: mips-gic: Fix pending & mask reads for MIPS64 with 32b GIC.
irqchip: mips-gic: Convert CPU numbers to VP IDs.
MIPS: CM: Provide a function to map from CPU to VP ID.
MIPS: Fix FTLB detection for R6
MIPS: cpu-features: Add cpu_has_ftlb
MIPS: ATH79: Add irq chip ar7240-misc-intc
MIPS: ATH79: Set missing irq ack handler for ar7100-misc-intc irq chip
MIPS: BPF: Fix build on pre-R2 little endian CPUs
MIPS: BPF: Avoid unreachable code on little endian
MIPS: bootmem: Fix mapstart calculation for contiguous maps
MIPS: Fix console output for Fulong2e system
Add node for the DMA multiplexer placed in front of the PL080 DMA
controller on lpc18xx/43xx devices.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Add the NXP LPC1773 SPIFI (SPI Flash Interface) flash controller
node to the dtsi for all lpc18xx/43xx devices.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Add the NXP LPC1850 RGU (Reset Generation Unit) reset controller
node to the dtsi for all lpc18xx/43xx devices.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Pull perf fixes from Thomas Gleixner:
"Another pile of fixes for perf:
- Plug overflows and races in the core code
- Sanitize the flow of the perf syscall so we error out before
handling the more complex and hard to undo setups
- Improve and fix Broadwell and Skylake hardware support
- Revert a fix which broke what it tried to fix in perf tools
- A couple of smaller fixes in various places of perf tools"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Fix copying of /proc/kcore
perf intel-pt: Remove no_force_psb from documentation
perf probe: Use existing routine to look for a kernel module by dso->short_name
perf/x86: Change test_aperfmperf() and test_intel() to static
tools lib traceevent: Fix string handling in heterogeneous arch environments
perf record: Avoid infinite loop at buildid processing with no samples
perf: Fix races in computing the header sizes
perf: Fix u16 overflows
perf: Restructure perf syscall point of no return
perf/x86/intel: Fix Skylake FRONTEND MSR extrareg mask
perf/x86/intel/pebs: Add PEBS frontend profiling for Skylake
perf/x86/intel: Make the CYCLE_ACTIVITY.* constraint on Broadwell more specific
perf tools: Bool functions shouldn't return -1
tools build: Add test for presence of __get_cpuid() gcc builtin
tools build: Add test for presence of numa_num_possible_cpus() in libnuma
Revert "perf symbols: Fix mismatched declarations for elf_getphdrnum"
perf stat: Fix per-pkg event reporting bug
The regulator-compatible property from the regulator DT binding was
deprecated and the correct approach is to use the node's name.
This patch has no functional changes since the values of the node's
name and the regulator-compatible match for all the regulators.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
MAARs should be initialised on each CPU (or rather, core) in the system
in order to achieve consistent behaviour & performance. Previously they
have only been initialised on the boot CPU which leads to performance
problems if tasks are later scheduled on a secondary CPU, particularly
if those tasks make use of unaligned vector accesses where some CPUs
don't handle any cases in hardware for non-speculative memory regions.
Fix this by recording the MAAR configuration from the boot CPU and
applying it to secondary CPUs as part of their bringup.
Reported-by: Doug Gilmore <doug.gilmore@imgtec.com>
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: Hemmo Nieminen <hemmo.nieminen@iki.fi>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Patchwork: https://patchwork.linux-mips.org/patch/11239/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Verifying that the MAAR configuration is as expected is useful when
debugging the performance of a system. Print out the memory regions
configured via MAAR along with their attributes.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Patchwork: https://patchwork.linux-mips.org/patch/11238/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
maar_init was previously only compiled when CONFIG_NEED_MULTIPLE_NODES
was not set, which has been fine since it is only called from the
standard implementation of mem_init which has the same condition. In
preparation for calling it from the SMP startup code on secondary CPUs,
move maar_init outside of the #ifndef such that it is always compiled.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>
Patchwork: https://patchwork.linux-mips.org/patch/11237/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The VP ID of a given CPU may not match up with the CPU number used by
Linux. For example, if the width of the VP part of the VP ID is wider
than log2(number of VPs per core) and the system has multiple cores then
this will be the case. Alternatively, if a pre-r6 system implements the
MT ASE with multiple VPEs per core and Linux is built without support
for the MT ASE then the numbers won't match up either. Provide a
function to convert from CPU number to VP ID.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/11211/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Pull x86 fixes from Thomas Gleixner:
"Two bugfixes from Andy addressing at least some of the subtle NMI
related wreckage which has been reported by Sasha Levin"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/nmi/64: Fix a paravirt stack-clobbering bug in the NMI code
x86/paravirt: Replace the paravirt nop with a bona fide empty function
Pull ARM fixes from Russell King:
"Just two fixes: wire up the new system calls added during the last
merge window, and fix another user access site"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: alignment: fix alignment handling for uaccess changes
ARM: wire up new syscalls
Our first real batch of fixes this release cycle. There's a collection of
them here:
- A fixup for a build breakage that hits on arm64 allmodconfig in QCOM SCM
firmware drivers
- MMC fixes for OMAP that had quite a bit of breakage this merge window.
- Misc build/warning fixes on PXA and OMAP
- A couple of minor fixes for Beagleboard X15 which is now starting to see
a few more users in the wild
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Our first real batch of fixes this release cycle. Nothing really
concerning, and diffstat is a bit inflated due to some DT contents
moving around on STi platforms.
There's a collection of them here:
- A fixup for a build breakage that hits on arm64 allmodconfig in
QCOM SCM firmware drivers
- MMC fixes for OMAP that had quite a bit of breakage this merge
window.
- Misc build/warning fixes on PXA and OMAP
- A couple of minor fixes for Beagleboard X15 which is now starting
to see a few more users in the wild"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (31 commits)
ARM: sti: dt: adapt DT to fix probe/bind issues in DRM driver
ARM: dts: fix omap2+ address translation for pbias
firmware: qcom: scm: Add function stubs for ARM64
ARM: dts: am57xx-beagle-x15: use palmas-usb for USB2
ARM: omap2plus_defconfig: enable GPIO_PCA953X
ARM: dts: omap5-uevm.dts: fix i2c5 pinctrl offsets
ARM: OMAP2+: AM43XX: Enable autoidle for clks in am43xx_init_late
ARM: dts: am57xx-beagle-x15: Update Phy supplies
ARM: pxa: balloon3: Fix build error
ARM: dts: Fixup model name for HP t410 dts
ARM: dts: DRA7: fix a typo in ethernet
ARM: omap2plus_defconfig: make PCF857x built-in
ARM: dts: Use ti,pbias compatible string for pbias
ARM: OMAP5: Cleanup options for SoC only build
ARM: DRA7: Select missing options for SoC only build
ARM: OMAP2+: board-generic: Remove stale of_irq macros
ARM: OMAP4+: PM: erratum is used by OMAP5 and DRA7 as well
ARM: dts: omap3-igep: Move eth IRQ pinmux to IGEPv2 common dtsi
ARM: dts: am57xx-beagle-x15: Add wakeup irq for mcp79410
ARM: dts: am335x-phycore-som: Fix mpu voltage
...
The bs1078v2 is a pcb found in 10.1" tablets with an A31 soc, 1G RAM
and 8G NAND, rtl8723as usb wifi, 1 micro USB OTG port, 1 USB HOST port
This commit adds a dts for v2 of the bs1078 pcb.
Signed-off-by: Lawrence Yu <lyu@micile.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Enable the otg/drc usb controller on the Marsboard A10.
Similar to Cubieboard, the 5V of the otg is directly connected to the
general 5V, so we only use the id pin.
Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Add IRQ configuration for bma250 accelerometer.
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
A33 has the same "Security System" crypto engine as A10/A20, but with a
separate reset control.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The LCD backlight on the A23/A33 Q8 format tablets is enabled
with a GPIO controlled regulator, and brightness controlled with
the SoC's PWM controller.
The backlight is powered from the AXP223 PMIC's DC1SW output,
which is not supported yet. A proper bootloader is required
to enable it.
The brightness levels are arbitrary. The FEX files do not have
such information. As such, actual brightness levels may differ
from device to device.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Even though it's not mentionned in the A23 user manual, the A23 has a gate
for the AHB1 clock to the msgbox IP. Add it to the clock-indices.
Reported-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The AHB1 gates were assumed to be identical between the A23 and the A33,
which turned out to be wrong. Move the A23 gates definition to the A23
DTSI.
Reported-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The A33 has a different gates array than the A23, add the node to the DT.
Reported-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This commits adds a generic dts file for q8 formfactor a13 based tablets.
The tablets ship in many variants, with the difference mainly being the
touchscreen controller / accelerometer / wifi chip used.
The wifi is USB based, and thus not listed in devicetree.
The touchscreen controller / accelerometer may turn out to be a problem
once we add support for those. We can either do something with devicetree
overlays, or add sun5i-a13-<touchscreen>-<accelerometer>.dts files. The
latter is what the android mod community is doing with firmware images.
This dts was tested with an a13 q8 tablet with a pcb labelled: "94V-0",
silead gsl1680 touchscreen controller and a mc32x0 accelerometer.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This is the sun5i / a13 version of sun8i-q8-common.dtsi for use in dts
files for a13 q8 based tablets. Compared to sun8i this uses uart1 for the
serial console, and PG0 for card-detect for mmc0.
This also adds pmic and otg support, which both use the same config on
all known q8 a13 devices. This is not present in sun5i-q8-common.dtsi
because pmic / otg support for sun8i has not yet been merged.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The PWM controller has 2 outputs, with one usable pin for each.
Add a pinmux setting for the first channel. This is often used
for backlight dimming on tablets.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
A23/A33 have a PWM controller that is compatible to the one on the A20.
Add a device node for it.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This patch add support to the keypad clock on sun7i
Signed-off-by: Yassin Jaffer <yassinjaffer@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Add mma8452 accelerometer to sun6i-a31-colombus.dts.
Signed-off-by: Sander Vermin <sander@vermin.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The Wobo i5 top set box is a somewhat curious A10s based top set box,
it uses an AXP209 rather then the AXP152 usually used in combination
with the A10s. It has an ethernet phy connected to PORTD rather then
PORTA, and its built-in usb wifi is connected via the otg controller.
This commit adds a dts file adding support for this top set box.
Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The emac pins on an A10s can also be routed to the outside through
PORTD rather then through PORTA, add a pinctrl node for this.
Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The Olimex A20 OLinuXino Micro features an eeprom that is always on the
board. This patch adds it to the dts.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The Olimex A20 OLinuXino Lime2 features an eeprom that is always on the
board. This patch adds it to the dts.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The Olimex A20 OLinuXino Lime features an eeprom that is always on the
board. This patch adds it to the dts.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The OLinuXino A10S micro features an eeprom. According to the eeprom.txt
binding document, we should use the manufacturer and 'at' is not the
proper manufacturer id according to the vendor-prefixes.
This patch takes the proper vendor-prefix and uses it for the eeprom
node.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The Olimex A10 OLinuXino Lime features an eeprom that is always on the
board. This patch adds it to the dts.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The iNet-tek iNet-1 PCB is a PCB found in various generic 10.1" 1024x600
A10 based tablets such as the Point of View Protab2 XXL and the
Cherry M1007.
This patch has been tested on both rev2 and rev5 of this board / these
tablets.
It comes with a rtl8188cus usb wifi connected to ehci1, focal ft5406ee8
touchscreen connected to i2c2 addr 0x38, bosch bma 250 accelerometer
connected to i2c1 addr 0x18 and the usual connectors: headphone,
mini hdmi, power-barrel, mini-usb and a micro-sd slot.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The inet9f-rev03 pcb is specially designed for gaming tablets, such as
the qware tb-g100 tablet.
These 7" tablets feature a dpad, firebuttons and 2 joysticks on the sides
of the screen.
Besides this they have the usual connectors: power-barrel, mini usb,
mini hdmi, headphone and micro-sd slot.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Cheap allwinner based devices in the q8 enclosure come in many variants,
all sharing the case and a number of other basic features.
They differ in the display, touchscreen, accelerometer and wifi chips
used.
This commit adds 2 dtsi files defining the shared features of all the
q8 tablets. sunxi-q8-common.dtsi defines features shared amongst all
q8 tablets, sun8i-q8-common.dtsi defines features shared amongst all
a23 / a33 based q8 tablets, but not with a13 q8 based tablets.
a13 based tablets use a different card-detect pin for the mmc, and
use uart1 instead of the r_uart for the serial console.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The inet98v_rev2 is a pcb used in generic A13 based tablets. It features
volume buttons, a power barrel, micro-usb otg, headphone connector and
a power button.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
sun6i also has the LRADC for tablet buttons.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Enable i2c1 and i2c2 controllers, these are used for the touchscreen resp.
the accelerometer.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Enable support for the tablet keys which are connected via the lradc.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Enable the otg controller on the inet97fv2 tablet.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Use axp209.dtsi and add regulator nodes for the regulators used on the
inet97fv2 tablet.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The inet97fv2 tablet only has a usb-2 wifi device connected to the second
ehci controller, disable the first ehci controller and both ohci
controllers.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The Auxtek-T003 HDMI stick is an A10s based HDMI stick with USB wifi,
and composite video out support.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Enable the otg/drc usb controller on the cubieboard2.
Note this board has the otg-vbus connected directly to the 5v-dcc of
the board, so there is no vbus0 regulator, nor vbus0-det.
Signed-off-by: Ralph Benadski <benadski@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Enable the otg/drc usb controller on the pcDuino 3.
Note this board has the otg-vbus connected directly to the 5v-dcc of
the board, so there is no vbus0 regulator, nor vbus0-det.
Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The gt90h is a pcb found in generic 9" tablets with an A23 soc, 1G RAM
and 8G nand, rtl8723as usb wifi, 1 micro usb port and 1 micro sd slot.
This commit adds a dts for v4 of the gt90h pcb.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Add regulator configuration to the pcduino3 dts file.
Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
[Maxime: Removed usb_power_supply node that isn't defined in the DTSI]
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Add a simplefb node for tvencoder / composite-video output, such as found
on the Auxtek-T003 and the CHIP.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The Colombus development kit uses an optional 2048x1536 edp panel using
an anx9804 parallel lcd to edp converter. The anx9804 chip is controlled
via an i2c bus which is connected to 2 regular gpio pins.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
These fixes are mainly regression fixes triggered by irq changes,
common clock framework introduction and sound side-effect of
other platforms.
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Merge tag 'pxa-fixes-v4.3' of https://github.com/rjarzmik/linux into fixes
ARM: pxa: fixes for v4.3
These fixes are mainly regression fixes triggered by irq changes,
common clock framework introduction and sound side-effect of
other platforms.
* tag 'pxa-fixes-v4.3' of https://github.com/rjarzmik/linux:
ARM: pxa: balloon3: Fix build error
ARM: pxa: ssp: Fix build error by removing originally incorrect DT binding
ARM: pxa: fix DFI bus lockups on startup
Signed-off-by: Olof Johansson <olof@lixom.net>
- Two more patches to fix most of the MMC regressions with the
PBIAS regulator changes. At least two MMC driver related issues
still seems to remain for omap3 legacy booting and omap4 duovero.
Note that the dts changes depend on a recent regulator fix, and
are based on the regulator commit now in mainline kernel
- Enable autoidle for am43xx clocks to prevent clocks from staying
always on
- Fix i2c5 pinctrl offsets for omap5-uevm
- Enable PCA953X as that's needed for HDMI to work on omap5
- Update phy supplies for beagle x15 beta board
- Use palmas-usb for on beagle x15 to start using the related
driver that recently got merged
-
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Merge tag 'omap-for-v4.3/fixes-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Fixes for omaps for v4.3-rc cycle:
- Two more patches to fix most of the MMC regressions with the
PBIAS regulator changes. At least two MMC driver related issues
still seems to remain for omap3 legacy booting and omap4 duovero.
Note that the dts changes depend on a recent regulator fix, and
are based on the regulator commit now in mainline kernel
- Enable autoidle for am43xx clocks to prevent clocks from staying
always on
- Fix i2c5 pinctrl offsets for omap5-uevm
- Enable PCA953X as that's needed for HDMI to work on omap5
- Update phy supplies for beagle x15 beta board
- Use palmas-usb for on beagle x15 to start using the related
driver that recently got merged
* tag 'omap-for-v4.3/fixes-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: fix omap2+ address translation for pbias
ARM: dts: am57xx-beagle-x15: use palmas-usb for USB2
ARM: omap2plus_defconfig: enable GPIO_PCA953X
ARM: dts: omap5-uevm.dts: fix i2c5 pinctrl offsets
ARM: OMAP2+: AM43XX: Enable autoidle for clks in am43xx_init_late
ARM: dts: am57xx-beagle-x15: Update Phy supplies
regulator: pbias: program pbias register offset in pbias driver
ARM: omap2plus_defconfig: Enable MUSB DMA support
ARM: DRA752: Add ID detect for ES2.0
ARM: OMAP3: vc: fix 'or' always true warning
ARM: OMAP2+: Fix booting if no timer parent clock is available
ARM: OMAP2+: omap-device: fix race deferred probe of omap_hsmmc vs omap_device_late_init
Signed-off-by: Olof Johansson <olof@lixom.net>
Resource management
- Revert pci_read_bridge_bases() unification (Bjorn Helgaas)
- Clear IORESOURCE_UNSET when clipping a bridge window (Bjorn Helgaas)
MSI
- Fix MSI IRQ domains for VFs on virtual buses (Alex Williamson)
Renesas R-Car host bridge driver
- Add R8A7794 support (Sergei Shtylyov)
Miscellaneous
- Fix devfn for VPD access through function 0 (Alex Williamson)
- Use function 0 VPD only for identical functions (Alex Williamson)
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Merge tag 'pci-v4.3-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"These are fixes for things we merged for v4.3 (VPD, MSI, and bridge
window management), and a new Renesas R8A7794 SoC device ID.
Details:
Resource management:
- Revert pci_read_bridge_bases() unification (Bjorn Helgaas)
- Clear IORESOURCE_UNSET when clipping a bridge window (Bjorn
Helgaas)
MSI:
- Fix MSI IRQ domains for VFs on virtual buses (Alex Williamson)
Renesas R-Car host bridge driver:
- Add R8A7794 support (Sergei Shtylyov)
Miscellaneous:
- Fix devfn for VPD access through function 0 (Alex Williamson)
- Use function 0 VPD only for identical functions (Alex Williamson)"
* tag 'pci-v4.3-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: rcar: Add R8A7794 support
PCI: Use function 0 VPD for identical functions, regular VPD for others
PCI: Fix devfn for VPD access through function 0
PCI/MSI: Fix MSI IRQ domains for VFs on virtual buses
PCI: Clear IORESOURCE_UNSET when clipping a bridge window
PCI: Revert "PCI: Call pci_read_bridge_bases() from core instead of arch code"
and a few PPC bug fixes too.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"AMD fixes for bugs introduced in the 4.2 merge window, and a few PPC
bug fixes too"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: disable halt_poll_ns as default for s390x
KVM: x86: fix off-by-one in reserved bits check
KVM: x86: use correct page table format to check nested page table reserved bits
KVM: svm: do not call kvm_set_cr0 from init_vmcb
KVM: x86: trap AMD MSRs for the TSeg base and mask
KVM: PPC: Book3S: Take the kvm->srcu lock in kvmppc_h_logical_ci_load/store()
KVM: PPC: Book3S HV: Pass the correct trap argument to kvmhv_commence_exit
KVM: PPC: Book3S HV: Fix handling of interrupted VCPUs
kvm: svm: reset mmu on VCPU reset
We observed some performance degradation on s390x with dynamic
halt polling. Until we can provide a proper fix, let's enable
halt_poll_ns as default only for supported architectures.
Architectures are now free to set their own halt_poll_ns
default value.
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Intel CPUID on AMD host or vice versa is a weird case, but it can
happen. Handle it by checking the host CPU vendor instead of the
guest's in reset_tdp_shadow_zero_bits_mask. For speed, the
check uses the fact that Intel EPT has an X (executable) bit while
AMD NPT has NX.
Reported-by: Borislav Petkov <bp@alien8.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
kvm_set_cr0 may want to call kvm_zap_gfn_range and thus access the
memslots array (SRCU protected). Using a mini SRCU critical section
is ugly, and adding it to kvm_arch_vcpu_create doesn't work because
the VMX vcpu_create callback calls synchronize_srcu.
Fixes this lockdep splat:
===============================
[ INFO: suspicious RCU usage. ]
4.3.0-rc1+ #1 Not tainted
-------------------------------
include/linux/kvm_host.h:488 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 0
1 lock held by qemu-system-i38/17000:
#0: (&(&kvm->mmu_lock)->rlock){+.+...}, at: kvm_zap_gfn_range+0x24/0x1a0 [kvm]
[...]
Call Trace:
dump_stack+0x4e/0x84
lockdep_rcu_suspicious+0xfd/0x130
kvm_zap_gfn_range+0x188/0x1a0 [kvm]
kvm_set_cr0+0xde/0x1e0 [kvm]
init_vmcb+0x760/0xad0 [kvm_amd]
svm_create_vcpu+0x197/0x250 [kvm_amd]
kvm_arch_vcpu_create+0x47/0x70 [kvm]
kvm_vm_ioctl+0x302/0x7e0 [kvm]
? __lock_is_held+0x51/0x70
? __fget+0x101/0x210
do_vfs_ioctl+0x2f4/0x560
? __fget_light+0x29/0x90
SyS_ioctl+0x4c/0x90
entry_SYSCALL_64_fastpath+0x16/0x73
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fixes the following sparse warnings:
arch/x86/kernel/cpu/perf_event_msr.c:13:6: warning: symbol
'test_aperfmperf' was not declared. Should it be static?
arch/x86/kernel/cpu/perf_event_msr.c:18:6: warning: symbol
'test_intel' was not declared. Should it be static?
Signed-off-by: Geliang Tang <geliangtang@163.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/4588e8ab09638458f2451af572827108be3b4a36.1443123796.git.geliangtang@163.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Move aliases from bcm-cygnus.dtsi back to individual .dts files. Also
clean up the chosen node to have the stdout-path using the proper alias
Signed-off-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
- Silence bogus warning for of_irq_parse_pci
- Fix typo in ARM idle-states binding doc and dts files
- Various minor binding documentation updates
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Merge tag 'devicetree-fixes-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree fixes from Rob Herring:
- Silence bogus warning for of_irq_parse_pci
- Fix typo in ARM idle-states binding doc and dts files
- Various minor binding documentation updates
* tag 'devicetree-fixes-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
Documentation: arm: Fix typo in the idle-states bindings examples
gpio: mention in DT binding doc that <name>-gpio is deprecated
of_pci_irq: Silence bogus "of_irq_parse_pci() failed ..." messages.
devicetree: bindings: Extend the bma180 bindings with bma250 info
of: thermal: Mark cooling-*-level properties optional
of: thermal: Fix inconsitency between cooling-*-state and cooling-*-level
Docs: dt: add #msi-cells to GICv3 ITS binding
of: add vendor prefix for Socionext Inc.
so that they can read the edid of connected displays.
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Merge tag 'v4.3-rockchip32-dtsfixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes
Add the ddc-i2c-bus reference to the veyron hdmi nodes,
so that they can read the edid of connected displays.
* tag 'v4.3-rockchip32-dtsfixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: dts: Add ddc i2c reference to veyron
Signed-off-by: Olof Johansson <olof@lixom.net>
STI drm drivers probe and bind using component framework was incorrect.
In addition to drivers fix DT update is needed to make all sub-components
become childs of sti-display-subsystem.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
"ARM: dts: <omap2/omap4/omap5/dra7>: add minimal l4 bus
layout with control module support" moved pbias_regulator dt node
from being a child node of ocp to be the child node of
'syscon'. Since 'syscon' doesn't have the 'ranges' property,
address translation fails while trying to convert the address
to resource. Fix it here by populating 'ranges' property in
syscon dt node.
Fixes: 72b10ac00e ("ARM: dts: omap24xx: add minimal l4 bus
layout with control module support")
Fixes: 7415b0b4c6 ("ARM: dts: omap4: add minimal l4 bus layout
with control module support")
Fixes: ed8509eddd ("ARM: dts: omap5: add minimal l4 bus
layout with control module support")
Fixes: d919501fef ("ARM: dts: dra7: add minimal l4 bus
layout with control module support")
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
[tony@atomide.com: fixed omap3 pbias to work]
Signed-off-by: Tony Lindgren <tony@atomide.com>
The idle-states bindings mandate that the entry-method string
in the idle-states node must be "psci" for ARM v8 64-bit systems,
but the examples in the bindings report a wrong entry-method string.
Owing to this typo, some dts in the kernel wrongly defined the
entry-method property, since they likely cut and pasted the example
definition without paying attention to the bindings definitions.
This patch fixes the typo in the DT idle states bindings examples and
respective dts in the kernel so that the bindings and related dts
files are made compliant.
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Howard Chen <howard.chen@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Rob Herring <robh@kernel.org>
Jonathan Liu reports that the recent addition of CPU_SW_DOMAIN_PAN
causes wpa_supplicant to die due to the following kernel oops:
Unhandled fault: page domain fault (0x81b) at 0x001017a2
pgd = ee1b8000
[001017a2] *pgd=6ebee831, *pte=6c35475f, *ppte=6c354c7f
Internal error: : 81b [#1] SMP ARM
Modules linked in: rt2800usb rt2x00usb rt2800librt2x00lib crc_ccitt mac80211
CPU: 1 PID: 202 Comm: wpa_supplicant Not tainted 4.3.0-rc2 #1
Hardware name: Allwinner sun7i (A20) Family
task: ec872f80 ti: ee364000 task.ti: ee364000
PC is at do_alignment_ldmstm+0x1d4/0x238
LR is at 0x0
pc : [<c001d1d8>] lr : [<00000000>] psr: 600c0113
sp : ee365e18 ip : 00000000 fp : 00000002
r10: 001017a2 r9 : 00000002 r8 : 001017aa
r7 : ee365fb0 r6 : e8820018 r5 : 001017a2 r4 : 00000003
r3 : d49e30e0 r2 : 00000000 r1 : ee365fbc r0 : 00000000
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none[ 34.393106] Control: 10c5387d Table: 6e1b806a DAC: 00000051
Process wpa_supplicant (pid: 202, stack limit = 0xee364210)
Stack: (0xee365e18 to 0xee366000)
...
[<c001d1d8>] (do_alignment_ldmstm) from [<c001d510>] (do_alignment+0x1f0/0x904)
[<c001d510>] (do_alignment) from [<c00092a0>] (do_DataAbort+0x38/0xb4)
[<c00092a0>] (do_DataAbort) from [<c0013d7c>] (__dabt_usr+0x3c/0x40)
Exception stack(0xee365fb0 to 0xee365ff8)
5fa0: 00000000 56c728c0 001017a2 d49e30e0
5fc0: 775448d2 597d4e74 00200800 7a9e1625 00802001 00000021 b6deec84 00000100
5fe0: 08020200 be9f4f20 0c0b0d0a b6d9b3e0 600c0010 ffffffff
Code: e1a0a005 e1a0000c 1affffe8 e5913000 (e4ea3001)
---[ end trace 0acd3882fcfdf9dd ]---
This is caused by the alignment handler not being fixed up for the
uaccess changes, and userspace issuing an unaligned LDM instruction.
So, fix the problem by adding the necessary fixups.
Reported-by: Jonathan Liu <net147@gmail.com>
Tested-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The third compatible string "brcm,brcmnand" in bcm-cygnus.dtsi nand node
is incorrect, redundant and should be removed. "brcm,brcmnand" is meant to
be used by STB based Broadcom SoCs. All iProc based SoCs should use
"brcm,nand-iproc".
Signed-off-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This patch enables touchscreen support on bcm958300k and bcm958305k.
Touchscreen is connected to these boards through the bcm9hmidc daughter
card, and therefore also adding bcm9hmidc.dtsi that describes the
daughter card
Signed-off-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Vikram Prakash <vikramp@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This patch enables NAND support on Broadcom Cygnus form factor board
(bcm911360_entphn)
Signed-off-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This patch enables various peripherals on Broadcom Cygnus wireless audio
board (bcm958305k). These peripherals include I2C, PCIe, and NAND
Signed-off-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reorder all Cygnus peripherals based on base register addresses in
bcm-cygnus.dtsi
Signed-off-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Move all Cygnus peripherals to be under the "axi" bus node of type
"simple-bus"
Signed-off-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Put all Cygnus core components into "core" node of type "simple-bus" in
bcm-cygnus.dtsi
Signed-off-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Use label instead of full path to reference device nodes in Cygnus dts
files
Signed-off-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Move aliases into bcm-cygnus.dtsi to avoid duplications in Cygnus dts
files
Signed-off-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
In not-instrumented code KASAN replaces instrumented memset/memcpy/memmove
with not-instrumented analogues __memset/__memcpy/__memove.
However, on x86 the EFI stub is not linked with the kernel. It uses
not-instrumented mem*() functions from arch/x86/boot/compressed/string.c
So we don't replace them with __mem*() variants in EFI stub.
On ARM64 the EFI stub is linked with the kernel, so we should replace
mem*() functions with __mem*(), because the EFI stub runs before KASAN
sets up early shadow.
So let's move these #undef mem* into arch's asm/efi.h which is also
included by the EFI stub.
Also, this will fix the warning in 32-bit build reported by kbuild test
robot:
efi-stub-helper.c:599:2: warning: implicit declaration of function 'memcpy'
[akpm@linux-foundation.org: use 80 cols in comment]
Signed-off-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Reported-by: Fengguang Wu <fengguang.wu@gmail.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Matt Fleming <matt.fleming@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The NMI entry code that switches to the normal kernel stack needs to
be very careful not to clobber any extra stack slots on the NMI
stack. The code is fine under the assumption that SWAPGS is just a
normal instruction, but that assumption isn't really true. Use
SWAPGS_UNSAFE_STACK instead.
This is part of a fix for some random crashes that Sasha saw.
Fixes: 9b6e6a8334 ("x86/nmi/64: Switch stacks on userspace NMI entry")
Reported-and-tested-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/974bc40edffdb5c2950a5c4977f821a446b76178.1442791737.git.luto@kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
PARAVIRT_ADJUST_EXCEPTION_FRAME generates this code (using nmi as an
example, trimmed for readability):
ff 15 00 00 00 00 callq *0x0(%rip) # 2796 <nmi+0x6>
2792: R_X86_64_PC32 pv_irq_ops+0x2c
That's a call through a function pointer to regular C function that
does nothing on native boots, but that function isn't protected
against kprobes, isn't marked notrace, and is certainly not
guaranteed to preserve any registers if the compiler is feeling
perverse. This is bad news for a CLBR_NONE operation.
Of course, if everything works correctly, once paravirt ops are
patched, it gets nopped out, but what if we hit this code before
paravirt ops are patched in? This can potentially cause breakage
that is very difficult to debug.
A more subtle failure is possible here, too: if _paravirt_nop uses
the stack at all (even just to push RBP), it will overwrite the "NMI
executing" variable if it's called in the NMI prologue.
The Xen case, perhaps surprisingly, is fine, because it's already
written in asm.
Fix all of the cases that default to paravirt_nop (including
adjust_exception_frame) with a big hammer: replace paravirt_nop with
an asm function that is just a ret instruction.
The Xen case may have other problems, so document them.
This is part of a fix for some random crashes that Sasha saw.
Reported-and-tested-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/8f5d2ba295f9d73751c33d97fda03e0495d9ade0.1442791737.git.luto@kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
R6 removed the Config4.MMUExtDef field, with the low 16 bits only
allowed to contain FTLB fields, and commit e87569cd6c ("MIPS:
cpu-probe: Fix VTLB/FTLB configuration for R6") updated the probing of
this field to assume an FTLB is always present for R6.
However the FTLB may still be absent. The presence of those fields is
actually specified by the MMU type in the Config.MT field, so use that
(the new cpu_has_ftlb) to determine whether the FTLB is actually
present.
Fixes: e87569cd6c ("MIPS: cpu-probe: Fix VTLB/FTLB configuration for R6")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11160/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Add cpu_has_ftlb, which specifies that an FTLB is present in addition to
the VTLB, probed based on whether Config.MT == 4 (rather than 1 for
standard JTLB).
This is necessary since MIPS release 6 removes Config4.MMUExtDef, so the
presence of the FTLB fields in Config4 must be determined from Config.MT
instead.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11159/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The ar7240 misc irq chip use ack handler
instead of ack_mask handler. All new ath79 chips use
the ar7240 misc irq chip
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
Acked-by: Alban Bedel <albeu@free.fr>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: devicetree@vger.kernel.org
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11164/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Punit Agrawal