This code is truly common between the signal sending cases so share it.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
As this work is truly common between all of the signal sending cases
there is no need to repeat it between the different cases.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Not all of the signals passed to __do_user_fault can be handled
the same way so expand the now tiny __do_user_fault in it's callers
and remove it.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
It gets easy to confuse what is going on when some code is shared and some not
so stop sharing the trivial bits of signal generation to make future updates
easier to understand.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
These two cases are practically the same and use siginfo differently
from the other signals sent from do_page_fault. So consolidate them
to make future changes easier.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This pepares for sending signals with something other than
arm64_force_sig_info.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Filling in siginfo is error prone and so it is wise to use more
specialized helpers to do that work. Factor out the arm specific
unhandled signal reporting from the work of delivering a signal so
the code can be modified to use functions that take the information
to fill out siginfo as parameters.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Every caller passes in current for tsk so there is no need to pass
tsk. Instead make tsk a local variable initialized to current.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Instead of generating a struct siginfo before calling arm64_notify_die
pass the signal number, tne sicode and the fault address into
arm64_notify_die and have it call force_sig_fault instead of
force_sig_info to let the generic code generate the struct siginfo.
This keeps code passing just the needed information into
siginfo generating code, making it easier to see what
is happening and harder to get wrong. Further by letting
the generic code handle the generation of struct siginfo
it reduces the number of sites generating struct siginfo
making it possible to review them and verify that all
of the fiddly details for a structure passed to userspace
are handled properly.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
On a randomly chosen distro kernel build for arm64, vmlinux.o shows the
following sections, containing jump label entries, and the associated
RELA relocation records, respectively:
...
[38088] __jump_table PROGBITS 0000000000000000 00e19f30
000000000002ea10 0000000000000000 WA 0 0 8
[38089] .rela__jump_table RELA 0000000000000000 01fd8bb0
000000000008be30 0000000000000018 I 38178 38088 8
...
In other words, we have 190 KB worth of 'struct jump_entry' instances,
and 573 KB worth of RELA entries to relocate each entry's code, target
and key members. This means the RELA section occupies 10% of the .init
segment, and the two sections combined represent 5% of vmlinux's entire
memory footprint.
So let's switch from 64-bit absolute references to 32-bit relative
references for the code and target field, and a 64-bit relative
reference for the 'key' field (which may reside in another module or the
core kernel, which may be more than 4 GB way on arm64 when running with
KASLR enable): this reduces the size of the __jump_table by 33%, and
gets rid of the RELA section entirely.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-s390@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Jessica Yu <jeyu@kernel.org>
Link: https://lkml.kernel.org/r/20180919065144.25010-4-ard.biesheuvel@linaro.org
The PHY found on the A64-OLinuXino requires a TX delay in order to
operate properly. Olimex uses a 600ps second delay in their BSP, and
that has been found to work, so let's use that value in the current
DT.
Signed-off-by: Rodrigo Exterckötter Tjäder <rodrigo@tjader.xyz>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Switch to updated coresight bindings for hw ports
Cc: Andy Gross <andy.gross@linaro.org>
Cc: David Brown <david.brown@linaro.org>
Cc: Ivan T. Ivanov <ivan.ivanov@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
- Adding firmware API for SoC with debugfs interface
Firmware driver communicates to Platform Management Unit (PMU) by using
SMC instructions routed to Arm Trusted Firmware (ATF). Initial version
adds support for base firmware driver with query and clock APIs.
EEMI spec is available here:
https://www.xilinx.com/support/documentation/user_guides/ug1200-eemi-api.pdf
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Merge tag 'zynqmp-soc-for-v4.20-v2' of https://github.com/Xilinx/linux-xlnx into next/drivers
arm64: zynqmp: SoC changes for v4.20
- Adding firmware API for SoC with debugfs interface
Firmware driver communicates to Platform Management Unit (PMU) by using
SMC instructions routed to Arm Trusted Firmware (ATF). Initial version
adds support for base firmware driver with query and clock APIs.
EEMI spec is available here:
https://www.xilinx.com/support/documentation/user_guides/ug1200-eemi-api.pdf
* tag 'zynqmp-soc-for-v4.20-v2' of https://github.com/Xilinx/linux-xlnx:
firmware: xilinx: Add debugfs for query data API
firmware: xilinx: Add debugfs interface
firmware: xilinx: Add clock APIs
firmware: xilinx: Add query data API
firmware: xilinx: Add Zynqmp firmware driver
dt-bindings: firmware: Add bindings for ZynqMP firmware
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Nothing Xen specific in these headers, which get included from a lot
of code in the kernel. So prune the includes and move them to the
Xen-specific files that actually use them instead.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Take the Xen check into the core code instead of delegating it to
the architectures.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Having multiple externs in arch headers is not a good way to provide
a common interface.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Tegra194 contains a version of the I2C controller that is no longer
compatible with the version found in Tegra114.
Signed-off-by: Thierry Reding <treding@nvidia.com>
This patch describes 3 additional interrupts per PPv2 port. Those
interrupts will be used later in future versions of the Marvell PPv2
driver, and now the device tree description matches the hardware
capabilities.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
This patch changes the PPv2 IRQ names in the CP110 device tree to match
a corresponding change in the Marvell PPv2 driver. The reason this was
updated is the IRQ where names after Tx/Rx interrupts, but this is not
true and can be configured. A following patch will add more of them and
the names wouldn't make sense.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
The SolidRun Clearfog GT-8K is based on Marvell Armada 8040 SoC.
https://wiki.solid-run.com/doku.php?id=products:a8040:clearfoggt8k
The following devices were tested with this DT on top of kernel
v4.19-rc4:
* 1GB Ethernet WAN
* 4 ports 1GB Ethernet switch (2.5GB uplink)
* SFP port
* SATA on CON3 PCIe slot
* USB3 type A port
* SD card and eMMC
* 2 LEDs
* 2 push buttons
[gregory: fix block comment alignement]
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
DSI controllers are also the hosts of their dsi bus and therefore contain
nodes describing the attached panels with their reg properties containing
the virtual ids.
The dsi controller nodes on rk3399 lacked the #address-cells and #size-cells
for these subnodes, so add them.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The Pine64 Rock64 board comes with a GigaDevice GD25Q128CSIG
or GD25Q127CSIG chip, which is a 128 Mbit SPI NOR flash chip
that supports the JEDEC read-ID command.
This patch enables the SPI controller and adds a device node
for the flash chip using the generic "jedec,spi-nor" comaptible.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Rockpro64 is a rockchip RK3399 based board from pine64.org.
This patch adds basic device node support for Rockpro64 board and make it able
to bring up.
Peripheral Works
- Sdcard
- USB 2.0, 3.0
- Leds
- Ethernet
- Debug console
Not working:
- USB Type-C
Signed-off-by: Akash Gajjar <Akash_Gajjar@mentor.com>
Acked-by: Deepak Das <Deepak_Das@mentor.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Based on a similar patch of the R8A7796 device tree
by Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Adds LVDS decoder, HDMI encoder and connector for the Draak board.
The LVDS0 and LVDS1 encoders can use the DU_DOTCLKIN0, DU_DOTCLKIN1 and
EXTAL externals clocks. Two of them are provided to the SoC on the Draak
board, hook them up in DT.
Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Add the LVDS decoder, HDMI encoder, VGA encoder and HDMI and VGA
connectors, and wire up the display-related nodes with clocks, pinmux
and regulators.
The LVDS0 and LVDS1 encoders can use the DU_DOTCLKIN0, DU_DOTCLKIN1 and
EXTAL externals clocks. Two of them are provided to the SoC on the Ebisu
board, hook them up in DT.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
The r8a77995 D3 platform has 2 LVDS channels connected to the DU.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
[uli: moved lvds* into the soc node, added PM domains, resets]
Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Try to add basic DT support for the Amlogic's Meson-G12A S905D2 SoC,
which describe components as follows: Reserve Memory, CPU, GIC, IRQ,
Timer, UART. It's capable of booting up into the serial console.
Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
dtc has new checks for I2C and SPI buses. Fix the SPI bus node names
and warnings in unit-addresses.
arch/arm64/boot/dts/freescale/fsl-ls1046a-rdb.dtb: Warning (i2c_bus_reg): /soc/i2c@2180000/eeprom@57: I2C bus unit address format error, expected "53"
arch/arm64/boot/dts/freescale/fsl-ls1046a-rdb.dtb: Warning (i2c_bus_reg): /soc/i2c@2180000/eeprom@56: I2C bus unit address format error, expected "52"
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The R8A77990 (E3) platform has one RGB output and two LVDS outputs
connected to the DU. Add the DT nodes for the DU, LVDS encoders and
supporting VSP and FCP.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This patch is adding communication layer with firmware.
Firmware driver provides an interface to firmware APIs.
Interface APIs can be used by any driver to communicate to
PMUFW(Platform Management Unit). All requests go through ATF.
Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This reverts commit 46053c7368.
This change breaks architectures setting up dma_ops in their own magic
way and not using arch_setup_dma_ops, so revert it.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Clang warns that if the default case is taken, ret will be
uninitialized.
./arch/arm64/include/asm/percpu.h:196:2: warning: variable 'ret' is used
uninitialized whenever switch default is taken
[-Wsometimes-uninitialized]
default:
^~~~~~~
./arch/arm64/include/asm/percpu.h:200:9: note: uninitialized use occurs
here
return ret;
^~~
./arch/arm64/include/asm/percpu.h:157:19: note: initialize the variable
'ret' to silence this warning
unsigned long ret, loop;
^
= 0
This warning appears several times while building the erofs filesystem.
While it's not strictly wrong, the BUILD_BUG will prevent this from
becoming a true problem. Initialize ret to 0 in the default case right
before the BUILD_BUG to silence all of these warnings.
Reported-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Dennis Zhou <dennis@kernel.org>
Commit a7eb26392b ("arm64: dts: broadcom: Add reference to Compute
Module IO Board V3") adds the bcm2837-rpi-cm3-io3.dts file as a target
in the Makefile, rather than the .dtb name. This will skip the
generation of the .dtb file at compile time and will fail the dtbs_install
target.
Fixes: a7eb26392b ("arm64: dts: broadcom: Add reference to Compute Module IO Board V3")
Signed-off-by: Liviu Dudau <liviu@dudau.co.uk>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
- Enable integrated NIC driver(hns3) for hisilicon SoCs
- Enable PCIe Port bus to support some PCIe features like
AER, hotplug, PME and DPC
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Merge tag 'hisi-defconfig-for-4.20' of git://github.com/hisilicon/linux-hisi into next/defconfig
ARM64: hisilicon: defconfig updates for 4.20
- Enable integrated NIC driver(hns3) for hisilicon SoCs
- Enable PCIe Port bus to support some PCIe features like
AER, hotplug, PME and DPC
* tag 'hisi-defconfig-for-4.20' of git://github.com/hisilicon/linux-hisi:
arm64: defconfig: Enable PCIEPORTBUS
arm64: defconfig: enable HiSilicon HNS3 driver
Signed-off-by: Olof Johansson <olof@lixom.net>
Add support for the bananapi R64 (BPI-R64) development board from
BIPAI KEJI. Detailed hardware information for BPI-R64 which could be
found on http://wiki.banana-pi.org/Banana_Pi_BPI-R64
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Fix ram size to 512 megabytes and sort nodes in alphabetical order.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Acked-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Add a built-in bluetooth 5 support for MT7622.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Acked-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Add device tree entries for timer, ARM CCI-400 and its PMU.
Otherwise, we add a cortex-a53-pmu node to enable hw perfevents.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Now that deliberate writes to swapper_pg_dir are made via the fixmap, we
can defend against errant writes by moving it into the rodata section.
Since tramp_pg_dir and reserved_ttbr0 must be at a fixed offset from
swapper_pg_dir, and are not modified at runtime, these are also moved
into the rodata section. Likewise, idmap_pg_dir is not modified at
runtime, and is moved into rodata.
Signed-off-by: Jun Yao <yaojun8558363@gmail.com>
Reviewed-by: James Morse <james.morse@arm.com>
[Mark: simplify linker script, commit message]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Once swapper_pg_dir is in the rodata section, it will not be possible to
modify it directly, but we will need to modify it in some cases.
To enable this, we can use the fixmap when deliberately modifying
swapper_pg_dir. As the pgd is only transiently mapped, this provides
some resilience against illicit modification of the pgd, e.g. for
Kernel Space Mirror Attack (KSMA).
Signed-off-by: Jun Yao <yaojun8558363@gmail.com>
Reviewed-by: James Morse <james.morse@arm.com>
[Mark: simplify ifdeffery, commit message]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Since the address of swapper_pg_dir is fixed for a given kernel image,
it is an attractive target for manipulation via an arbitrary write. To
mitigate this we'd like to make it read-only by moving it into the
rodata section.
We require that swapper_pg_dir is at a fixed offset from tramp_pg_dir
and reserved_ttbr0, so these will also need to move into rodata.
However, swapper_pg_dir is allocated along with some transient page
tables used for boot which we do not want to move into rodata.
As a step towards this, this patch separates the boot-time page tables
into a new init_pg_dir, and reduces swapper_pg_dir to the single page it
needs to be. This allows us to retain the relationship between
swapper_pg_dir, tramp_pg_dir, and swapper_pg_dir, while cleanly
separating these from the boot-time page tables.
The init_pg_dir holds all of the pgd/pud/pmd/pte levels needed during
boot, and all of these levels will be freed when we switch to the
swapper_pg_dir, which is initialized by the existing code in
paging_init(). Since we start off on the init_pg_dir, we no longer need
to allocate a transient page table in paging_init() in order to ensure
that swapper_pg_dir isn't live while we initialize it.
There should be no functional change as a result of this patch.
Signed-off-by: Jun Yao <yaojun8558363@gmail.com>
Reviewed-by: James Morse <james.morse@arm.com>
[Mark: place init_pg_dir after BSS, fold mm changes, commit message]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
In subsequent patches we'll use a transient pgd during the primary cpu's
boot process. To make this work while allowing secondary cpus to use the
swapper_pg_dir, we need to pass the relevant TTBR1 pgd as a parameter
to __enable_mmu().
This patch updates __enable__mmu() to take this as a parameter, updating
callsites to pass swapper_pg_dir for now.
There should be no functional change as a result of this patch.
Signed-off-by: Jun Yao <yaojun8558363@gmail.com>
Reviewed-by: James Morse <james.morse@arm.com>
[Mark: simplify assembly, clarify commit message]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Enable all necessary device tree nodes and add connector node to device
trees for all supported A64 boards with HDMI.
Jagan, tested on BPI-M64, OPI-Win, A64-Olinuxino, NPI-A64
Vasily, tested on pine64-lts
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
[Icenowy: squash all board patches altogether and change supply name]
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
