SoC along with two boards. A lot of Samsung people contributed into this
but the final work and commits were done by Chanwoo Choi.
This means that for v4.10 we got:
1. Exynos5433 DTSI.
2. Two boards: TM2 and TM2E. These are (almost fully) working mobile phones.
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Merge tag 'samsung-dt64-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/dt64
Finally, I am really pleased to announce adding support for Exynos5433 ARMv8
SoC along with two boards. A lot of Samsung people contributed into this
but the final work and commits were done by Chanwoo Choi.
This means that for v4.10 we got:
1. Exynos5433 DTSI.
2. Two boards: TM2 and TM2E. These are (almost fully) working mobile phones.
* tag 'samsung-dt64-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
arm64: dts: exynos: Add dts file for Exynos5433-based TM2E board
arm64: dts: exynos: Add dts file for Exynos5433-based TM2 board
arm64: dts: exynos: Add dtsi files for Samsung Exynos5433 64bit SoC
Signed-off-by: Olof Johansson <olof@lixom.net>
- Switch CPU enable-method from spin-table to PSCI
- Add OPP tables to support generic cpufreq driver
- Misc fixes
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Merge tag 'uniphier-dt64-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-uniphier into next/dt64
UniPhier ARM64 SoC DT updates for v4.10
- Switch CPU enable-method from spin-table to PSCI
- Add OPP tables to support generic cpufreq driver
- Misc fixes
* tag 'uniphier-dt64-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-uniphier:
arm64: dts: uniphier: make compatible of syscon nodes SoC-specific
arm64: dts: uniphier: add CPU clocks and OPP tables for LD20 SoC
arm64: dts: uniphier: add CPU clock and OPP table for LD11 SoC
arm64: dts: uniphier: increase register region size of sysctrl node
arm64: dts: uniphier: switch over to PSCI enable method
Signed-off-by: Olof Johansson <olof@lixom.net>
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Merge tag 'v4.9-rc3' into next/dt64
Linux 4.9-rc3
* tag 'v4.9-rc3': (292 commits)
Linux 4.9-rc3
x86/smpboot: Init apic mapping before usage
ACPICA: Dispatcher: Fix interpreter locking around acpi_ev_initialize_region()
ACPICA: Dispatcher: Fix an unbalanced lock exit path in acpi_ds_auto_serialize_method()
ACPICA: Dispatcher: Fix order issue of method termination
ARC: module: print pretty section names
ARC: module: elide loop to save reference to .eh_frame
ARC: mm: retire ARC_DBG_TLB_MISS_COUNT...
ARC: build: retire old toggles
ARC: boot log: refactor cpu name/release printing
ARC: boot log: remove awkward space comma from MMU line
ARC: boot log: don't assume SWAPE instruction support
ARC: boot log: refactor printing abt features not captured in BCRs
ARCv2: boot log: print IOC exists as well as enabled status
ubifs: Fix regression in ubifs_readdir()
ubi: fastmap: Fix add_vol() return value test in ubi_attach_fastmap()
MAINTAINERS: Add entry for genwqe driver
VMCI: Doorbell create and destroy fixes
GenWQE: Fix bad page access during abort of resource allocation
vme: vme_get_size potentially returning incorrect value on failure
...
These hardware blocks are SoC-specific, so their compatible strings
should be SoC-specific as well. This change has no impact on the
actual behavior since it is controlled by the generic "simple-mfd",
"syscon" compatible strings.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Add a CPU clock to every CPU node and CPU OPP tables to use the
generic cpufreq driver. All the CPUs in each cluster share the
same OPP table.
Note:
clock-latency-ns (300ns) was calculated based on the CPU-gear switch
sequencer spec; it takes 12 clock cycles on the sequencer running
at 50 MHz, plus a bit additional latency.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Add a CPU clock to every CPU node and a CPU OPP table to use the
generic cpufreq driver.
Note:
clock-latency-ns (300ns) was calculated based on the CPU-gear switch
sequencer spec; it takes 12 clock cycles on the sequencer running
at 50 MHz, plus a bit additional latency.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
The System Control node has 0x10000 byte of registers. The current
reg size must be expanded to use the cpufreq driver because the
registers controlling CPU frequency are located at offset 0x8000.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
At the first system bring-up, I chose to use spin-table because ARM
Trusted Firmware was not ready for this platform at that moment.
Actually, these SoCs are equipped with EL3 and able to provide PSCI.
Now I finished porting the ATF BL31 for the UniPhier platform, so it
is ready to migrate to PSCI enable method.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since this board doesn't mount pull-up/down registers for
USB1_{OVC,PWEN} pins, we should enable bias setting to pull these
pins up/down.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Based on work for the r8a7796 by Wolfram Sang.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Enable the exposed SD card slots in the DT of the r8a7796/salvator-x.
Based on work for the r8a7795/salvator-x by Ai Kyuse.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
This patch adds the Device Tree source for Exynos5433-based Samsung TM2E
board. TM2E board is very similar to the TM2 board so the
exynos5433-tm2e.dts includes the TM2 DTS and overrides the differences.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Signed-off-by: Jaewon Kim <jaewon02.kim@samsung.com>
Signed-off-by: Hyungwon Hwang <human.hwang@samsung.com>
Signed-off-by: Inha Song <ideal.song@samsung.com>
Signed-off-by: Ingi kim <ingi2.kim@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Tested-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
This patch adds the Device Tree source for Exynos5433-based Samsung TM2
board.
This patch adds support for following devices:
1. basic SoC
- Initial booting for Samsung Exynos5433 SoC
- DRAM LPDDR3 (3GB)
- eMMC (32GB)
- ARM architecture timer
2. power management devices
- Sasmung S2MPS13 PMIC for the power supply
- CPUFREQ for big.LITTLE cores
- TMU for big.LITTLE cores and GPU
- ADC with thermistor to measure the temperature of AP/Battery/Charger
- Maxim MAX77843 Interface PMIC (MUIC/Haptic/Regulator)
3. sound devices
- I2S for sound bus
- LPASS for sound power control
- Wolfson WM5110 for sound codec
- Maxim MAX98504 for speaker amplifier
- TM2 ASoC Machine device driver node
3. display devices
- DECON, DSI and MIC for the panel output
4. USB devices
- USB 3.0 DRD (Dual Role Device)
- USB 3.0 Host controller
5. storage devices
- MSHC (Mobile Storage Host Controller) for eMMC device
6. misc devices
- gpio-keys (power, volume up/down, home key)
- PWM (Pulse Width Modulation Timer)
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Signed-off-by: Jaewon Kim <jaewon02.kim@samsung.com>
Signed-off-by: Hyungwon Hwang <human.hwang@samsung.com>
Signed-off-by: Inha Song <ideal.song@samsung.com>
Signed-off-by: Ingi kim <ingi2.kim@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Tested-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
We haven't seen a whole lot of fixes for the first two weeks since the merge
window, but here is the batch that we have at the moment.
Nothing sticks out as particularly bad or scary, it's mostly a handful of
smaller fixes to several platforms. The Uniphier reset controller changes
could probably have been delayed to 4.10, but they're not scary and just
plumbing up driver changes that went in during the merge window.
We're also adding another maintainer to Marvell Berlin platforms, to help
out when Sebastian is too busy. Yay teamwork!
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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:
"We haven't seen a whole lot of fixes for the first two weeks since the
merge window, but here is the batch that we have at the moment.
Nothing sticks out as particularly bad or scary, it's mostly a handful
of smaller fixes to several platforms. The Uniphier reset controller
changes could probably have been delayed to 4.10, but they're not
scary and just plumbing up driver changes that went in during the
merge window.
We're also adding another maintainer to Marvell Berlin platforms, to
help out when Sebastian is too busy. Yay teamwork!"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: imx: mach-imx6q: Fix the PHY ID mask for AR8031
ARM: dts: vf610: fix IRQ flag of global timer
ARM: imx: gpc: Fix the imx_gpc_genpd_init() error path
ARM: imx: gpc: Initialize all power domains
arm64: dts: Updated NAND DT properties for NS2 SVK
arm64: dts: uniphier: change MIO node to SD control node
ARM: dts: uniphier: change MIO node to SD control node
reset: uniphier: rename MIO reset to SD reset for Pro5, PXs2, LD20 SoCs
arm64: uniphier: select ARCH_HAS_RESET_CONTROLLER
ARM: uniphier: select ARCH_HAS_RESET_CONTROLLER
arm64: dts: Add timer erratum property for LS2080A and LS1043A
arm64: dts: rockchip: remove the abuse of keep-power-in-suspend
ARM: multi_v7_defconfig: Enable Intel e1000e driver
MAINTAINERS: add myself as Marvell berlin SoC maintainer
bus: qcom-ebi2: depend on ARCH_QCOM or COMPILE_TEST
ARM: dts: fix the SD card on the Snowball
arm64: dts: rockchip: remove always-on and boot-on from vcc_sd
arm64: dts: marvell: fix clocksource for CP110 master SPI0
ARM: mvebu: Select corediv clk for all mvebu v7 SoC
1. Addition of SMMU(MMU-401) device nodes mainly to assist other
developments and testing
2. Addition of CPU dmips/capacity information on all the Juno boards
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Merge tag 'juno-dt-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into next/dt64
ARMv8 Vexpress/Juno DT updates for v4.10
1. Addition of SMMU(MMU-401) device nodes mainly to assist other
developments and testing
2. Addition of CPU dmips/capacity information on all the Juno boards
* tag 'juno-dt-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
arm64: dts: juno: add cpu capacity-dmips-mhz information to R2 boards
arm64: dts: juno: add cpu capacity-dmips-mhz information to R1 boards
arm64: dts: juno: add cpu capacity-dmips-mhz information to R0 boards
arm64: dts: juno: Add SMMUs device nodes
Signed-off-by: Olof Johansson <olof@lixom.net>
bind/unbind calls work correctly and remove a sdio-only
property from non-sdio mmc hosts, that accidentially was
added there.
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Merge tag 'v4.9-rockchip-dts64-fixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes
Correct regulator handling on Rockchip arm64 boards to make
bind/unbind calls work correctly and remove a sdio-only
property from non-sdio mmc hosts, that accidentially was
added there.
* tag 'v4.9-rockchip-dts64-fixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
arm64: dts: rockchip: remove the abuse of keep-power-in-suspend
arm64: dts: rockchip: remove always-on and boot-on from vcc_sd
Signed-off-by: Olof Johansson <olof@lixom.net>
- Ray adds the required bus width and OOB sector size properties to the
Northstar 2 SVK reference board in order for the NAND controller to work
properly
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Merge tag 'arm-soc/for-4.9/devicetree-arm64-fixes' of http://github.com/Broadcom/stblinux into fixes
This pull request contains a single fix for Broadcom ARM64-based SoCs:
- Ray adds the required bus width and OOB sector size properties to the
Northstar 2 SVK reference board in order for the NAND controller to work
properly
* tag 'arm-soc/for-4.9/devicetree-arm64-fixes' of http://github.com/Broadcom/stblinux:
arm64: dts: Updated NAND DT properties for NS2 SVK
Signed-off-by: Olof Johansson <olof@lixom.net>
- A couple of patches from Fabio to fix the GPC power domain regression
which is caused by PM Domain core change 0159ec6707
("PM / Domains: Verify the PM domain is present when adding a
provider"), and a related kernel crash seen with multi_v7_defconfig
build.
- Correct the PHY ID mask for AR8031 to match phy driver code.
- Apply new added timer erratum A008585 for LS1043A and LS2080A SoC.
- Correct vf610 global timer IRQ flag to avoid warning from gic driver
after commit 992345a58e ("irqchip/gic: WARN if setting the
interrupt type for a PPI fails").
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Merge tag 'imx-fixes-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes
The i.MX fixes for 4.9:
- A couple of patches from Fabio to fix the GPC power domain regression
which is caused by PM Domain core change 0159ec6707
("PM / Domains: Verify the PM domain is present when adding a
provider"), and a related kernel crash seen with multi_v7_defconfig
build.
- Correct the PHY ID mask for AR8031 to match phy driver code.
- Apply new added timer erratum A008585 for LS1043A and LS2080A SoC.
- Correct vf610 global timer IRQ flag to avoid warning from gic driver
after commit 992345a58e ("irqchip/gic: WARN if setting the
interrupt type for a PPI fails").
* tag 'imx-fixes-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: imx: mach-imx6q: Fix the PHY ID mask for AR8031
ARM: dts: vf610: fix IRQ flag of global timer
ARM: imx: gpc: Fix the imx_gpc_genpd_init() error path
ARM: imx: gpc: Initialize all power domains
arm64: dts: Add timer erratum property for LS2080A and LS1043A
Signed-off-by: Olof Johansson <olof@lixom.net>
Add SDHI nodes to the DT of the r8a7796 SoC.
Based on the DT of the r8a7795 SoC.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
The SoC-specific compatible strings have been removed from the FCP DT
bindings, removed them from the device tree.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Fix parameter name for __page_to_voff, to match its definition.
At present, we don't see any issue, as page_to_virt's caller
declares 'page'.
Fixes: 9f2875912d ("arm64: mm: restrict virt_to_page() to the linear mapping")
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
When booting on NUMA system with memory-less node (no
memory dimm on this memory controller), the print
for setup_node_data() is incorrect:
NUMA: Initmem setup node 2 [mem 0x00000000-0xffffffffffffffff]
It can be fixed by printing [mem 0x00000000-0x00000000] when
end_pfn is 0, but print <memory-less node> will be more useful.
Fixes: 1a2db30034 ("arm64, numa: Add NUMA support for arm64 platforms.")
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yisheng Xie <xieyisheng1@huawei.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This patch adds NAND DT properties for NS2 SVK to configure the bus
width width and OOB sector size
Signed-off-by: Prafulla Kota <prafulla.kota@broadcom.com>
Signed-off-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
The UniPhier reset driver (drivers/reset/reset-uniphier.c) has been
merged. Select ARCH_HAS_RESET_CONTROLLER from the SoC Kconfig.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The WnR bit in the HSR/ESR_EL2 indicates whether a data abort was
generated by a read or a write instruction. For stage 2 data aborts
generated by a stage 1 translation table walk (i.e. the actual page
table access faults at EL2), the WnR bit therefore reports whether the
instruction generating the walk was a load or a store, *not* whether the
page table walker was reading or writing the entry.
For page tables marked as read-only at stage 2 (e.g. due to KSM merging
them with the tables from another guest), this could result in livelock,
where a page table walk generated by a load instruction attempts to
set the access flag in the stage 1 descriptor, but fails to trigger
CoW in the host since only a read fault is reported.
This patch modifies the arm64 kvm_vcpu_dabt_iswrite function to
take into account stage 2 faults in stage 1 walks. Since DBM cannot be
disabled at EL2 for CPUs that implement it, we assume that these faults
are always causes by writes, avoiding the livelock situation at the
expense of occasional, spurious CoWs.
We could, in theory, do a bit better by checking the guest TCR
configuration and inspecting the page table to see why the PTE faulted.
However, I doubt this is measurable in practice, and the threat of
livelock is real.
Cc: <stable@vger.kernel.org>
Cc: Julien Grall <julien.grall@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Both the LS1043A and LS2080A platforms are affected by the Freescale
A008585 erratum. Advertise it in their respective device trees.
Signed-off-by: Scott Wood <oss@buserror.net>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
- Fix ACPI boot due to recent broken NUMA changes
- Fix remote enabling of CPU features requiring PSTATE bit manipulation
- Add address range check when emulating user cache maintenance
- Fix LL/SC loops that allow compiler to introduce memory accesses
- Fix recently added write_sysreg_s macro
- Ensure MDCR_EL2 is initialised on qemu targets without a PMU
- Avoid kaslr breakage due to MODVERSIONs and DYNAMIC_FTRACE
- Correctly drive recent ld when building relocatable Image
- Remove junk IS_ERR check from xgene PMU driver added during merge window
- pr_cont fixes after core changes in the merge window
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Most of these are CC'd for stable, but there are a few fixing issues
introduced during the recent merge window too.
There's also a fix for the xgene PMU driver, but it seemed daft to
send as a separate pull request, so I've included it here with the
rest of the fixes.
- Fix ACPI boot due to recent broken NUMA changes
- Fix remote enabling of CPU features requiring PSTATE bit manipulation
- Add address range check when emulating user cache maintenance
- Fix LL/SC loops that allow compiler to introduce memory accesses
- Fix recently added write_sysreg_s macro
- Ensure MDCR_EL2 is initialised on qemu targets without a PMU
- Avoid kaslr breakage due to MODVERSIONs and DYNAMIC_FTRACE
- Correctly drive recent ld when building relocatable Image
- Remove junk IS_ERR check from xgene PMU driver added during merge window
- pr_cont fixes after core changes in the merge window"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: remove pr_cont abuse from mem_init
arm64: fix show_regs fallout from KERN_CONT changes
arm64: kernel: force ET_DYN ELF type for CONFIG_RELOCATABLE=y
arm64: suspend: Reconfigure PSTATE after resume from idle
arm64: mm: Set PSTATE.PAN from the cpu_enable_pan() call
arm64: cpufeature: Schedule enable() calls instead of calling them via IPI
arm64: Cortex-A53 errata workaround: check for kernel addresses
arm64: percpu: rewrite ll/sc loops in assembly
arm64: swp emulation: bound LL/SC retries before rescheduling
arm64: sysreg: Fix use of XZR in write_sysreg_s
arm64: kaslr: keep modules close to the kernel when DYNAMIC_FTRACE=y
arm64: kernel: Init MDCR_EL2 even in the absence of a PMU
perf: xgene: Remove bogus IS_ERR() check
arm64: kernel: numa: fix ACPI boot cpu numa node mapping
arm64: kaslr: fix breakage with CONFIG_MODVERSIONS=y
All the lines printed by mem_init are independent, with each ending with
a newline. While they logically form a large block, none are actually
continuations of previous lines.
The kernel-side printk code and the userspace demsg tool differ in their
handling of KERN_CONT following a newline, and while this isn't always a
problem kernel-side, it does cause difficulty for userspace. Using
pr_cont causes the userspace tool to not print line prefix (e.g.
timestamps) even when following a newline, mis-aligning the output and
making it harder to read, e.g.
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] modules : 0xffff000000000000 - 0xffff000008000000 ( 128 MB)
vmalloc : 0xffff000008000000 - 0xffff7dffbfff0000 (129022 GB)
.text : 0xffff000008080000 - 0xffff0000088b0000 ( 8384 KB)
.rodata : 0xffff0000088b0000 - 0xffff000008c50000 ( 3712 KB)
.init : 0xffff000008c50000 - 0xffff000008d50000 ( 1024 KB)
.data : 0xffff000008d50000 - 0xffff000008e25200 ( 853 KB)
.bss : 0xffff000008e25200 - 0xffff000008e6bec0 ( 284 KB)
fixed : 0xffff7dfffe7fd000 - 0xffff7dfffec00000 ( 4108 KB)
PCI I/O : 0xffff7dfffee00000 - 0xffff7dffffe00000 ( 16 MB)
vmemmap : 0xffff7e0000000000 - 0xffff800000000000 ( 2048 GB maximum)
0xffff7e0000000000 - 0xffff7e0026000000 ( 608 MB actual)
memory : 0xffff800000000000 - 0xffff800980000000 ( 38912 MB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=6, Nodes=1
Fix this by using pr_notice consistently for all lines, which both the
kernel and userspace are happy with.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Recently in commit 4bcc595ccd ("printk: reinstate KERN_CONT for
printing continuation lines"), the behaviour of printk changed w.r.t.
KERN_CONT. Now, KERN_CONT is mandatory to continue existing lines.
Without this, prefixes are inserted, making output illegible, e.g.
[ 1007.069010] pc : [<ffff00000871898c>] lr : [<ffff000008718948>] pstate: 40000145
[ 1007.076329] sp : ffff000008d53ec0
[ 1007.079606] x29: ffff000008d53ec0 [ 1007.082797] x28: 0000000080c50018
[ 1007.086160]
[ 1007.087630] x27: ffff000008e0c7f8 [ 1007.090820] x26: ffff80097631ca00
[ 1007.094183]
[ 1007.095653] x25: 0000000000000001 [ 1007.098843] x24: 000000ea68b61cac
[ 1007.102206]
... or when dumped with the userpace dmesg tool, which has slightly
different implicit newline behaviour. e.g.
[ 1007.069010] pc : [<ffff00000871898c>] lr : [<ffff000008718948>] pstate: 40000145
[ 1007.076329] sp : ffff000008d53ec0
[ 1007.079606] x29: ffff000008d53ec0
[ 1007.082797] x28: 0000000080c50018
[ 1007.086160]
[ 1007.087630] x27: ffff000008e0c7f8
[ 1007.090820] x26: ffff80097631ca00
[ 1007.094183]
[ 1007.095653] x25: 0000000000000001
[ 1007.098843] x24: 000000ea68b61cac
[ 1007.102206]
We can't simply always use KERN_CONT for lines which may or may not be
continuations. That causes line prefixes (e.g. timestamps) to be
supressed, and the alignment of all but the first line will be broken.
For even more fun, we can't simply insert some dummy empty-string printk
calls, as GCC warns for an empty printk string, and even if we pass
KERN_DEFAULT explcitly to silence the warning, the prefix gets swallowed
unless there is an additional part to the string.
Instead, we must manually iterate over pairs of registers, which gives
us the legible output we want in either case, e.g.
[ 169.771790] pc : [<ffff00000871898c>] lr : [<ffff000008718948>] pstate: 40000145
[ 169.779109] sp : ffff000008d53ec0
[ 169.782386] x29: ffff000008d53ec0 x28: 0000000080c50018
[ 169.787650] x27: ffff000008e0c7f8 x26: ffff80097631de00
[ 169.792913] x25: 0000000000000001 x24: 00000027827b2cf4
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
GNU ld used to set the ELF file type to ET_DYN for PIE executables, which
is the same file type used for shared libraries. However, this was changed
recently, and now PIE executables are emitted as ET_EXEC instead.
The distinction is only relevant for ELF loaders, and so there is little
reason to care about the difference when building the kernel, which is
why the change has gone unnoticed until now.
However, debuggers do use the ELF binary, and expect ET_EXEC type files
to appear in memory at the exact offset described in the ELF metadata.
This means source level debugging is no longer possible when KASLR is in
effect or when executing the stub.
So add the -shared LD option when building with CONFIG_RELOCATABLE=y. This
forces the ELF file type to be set to ET_DYN (which is what you get when
building with binutils 2.24 and earlier anyway), and has no other ill
effects.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The suspend/resume path in kernel/sleep.S, as used by cpu-idle, does not
save/restore PSTATE. As a result of this cpufeatures that were detected
and have bits in PSTATE get lost when we resume from idle.
UAO gets set appropriately on the next context switch. PAN will be
re-enabled next time we return from user-space, but on a preemptible
kernel we may run work accessing user space before this point.
Add code to re-enable theses two features in __cpu_suspend_exit().
We re-use uao_thread_switch() passing current.
Signed-off-by: James Morse <james.morse@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Commit 338d4f49d6 ("arm64: kernel: Add support for Privileged Access
Never") enabled PAN by enabling the 'SPAN' feature-bit in SCTLR_EL1.
This means the PSTATE.PAN bit won't be set until the next return to the
kernel from userspace. On a preemptible kernel we may schedule work that
accesses userspace on a CPU before it has done this.
Now that cpufeature enable() calls are scheduled via stop_machine(), we
can set PSTATE.PAN from the cpu_enable_pan() call.
Add WARN_ON_ONCE(in_interrupt()) to check the PSTATE value we updated
is not immediately discarded.
Reported-by: Tony Thompson <anthony.thompson@arm.com>
Reported-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
[will: fixed typo in comment]
Signed-off-by: Will Deacon <will.deacon@arm.com>
The enable() call for a cpufeature/errata is called using on_each_cpu().
This issues a cross-call IPI to get the work done. Implicitly, this
stashes the running PSTATE in SPSR when the CPU receives the IPI, and
restores it when we return. This means an enable() call can never modify
PSTATE.
To allow PAN to do this, change the on_each_cpu() call to use
stop_machine(). This schedules the work on each CPU which allows
us to modify PSTATE.
This involves changing the protype of all the enable() functions.
enable_cpu_capabilities() is called during boot and enables the feature
on all online CPUs. This path now uses stop_machine(). CPU features for
hotplug'd CPUs are enabled by verify_local_cpu_features() which only
acts on the local CPU, and can already modify the running PSTATE as it
is called from secondary_start_kernel().
Reported-by: Tony Thompson <anthony.thompson@arm.com>
Reported-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Commit 7dd01aef05 ("arm64: trap userspace "dc cvau" cache operation on
errata-affected core") adds code to execute cache maintenance instructions
in the kernel on behalf of userland on CPUs with certain ARM CPU errata.
It turns out that the address hasn't been checked to be a valid user
space address, allowing userland to clean cache lines in kernel space.
Fix this by introducing an address check before executing the
instructions on behalf of userland.
Since the address doesn't come via a syscall parameter, we can't just
reject tagged pointers and instead have to remove the tag when checking
against the user address limit.
Cc: <stable@vger.kernel.org>
Fixes: 7dd01aef05 ("arm64: trap userspace "dc cvau" cache operation on errata-affected core")
Reported-by: Kristina Martsenko <kristina.martsenko@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
[will: rework commit message + replace access_ok with max_user_addr()]
Signed-off-by: Will Deacon <will.deacon@arm.com>
Writing the outer loop of an LL/SC sequence using do {...} while
constructs potentially allows the compiler to hoist memory accesses
between the STXR and the branch back to the LDXR. On CPUs that do not
guarantee forward progress of LL/SC loops when faced with memory
accesses to the same ERG (up to 2k) between the failed STXR and the
branch back, we may end up livelocking.
This patch avoids this issue in our percpu atomics by rewriting the
outer loop as part of the LL/SC inline assembly block.
Cc: <stable@vger.kernel.org>
Fixes: f97fc81079 ("arm64: percpu: Implement this_cpu operations")
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
If a CPU does not implement a global monitor for certain memory types,
then userspace can attempt a kernel DoS by issuing SWP instructions
targetting the problematic memory (for example, a framebuffer mapped
with non-cacheable attributes).
The SWP emulation code protects against these sorts of attacks by
checking for pending signals and potentially rescheduling when the STXR
instruction fails during the emulation. Whilst this is good for avoiding
livelock, it harms emulation of legitimate SWP instructions on CPUs
where forward progress is not guaranteed if there are memory accesses to
the same reservation granule (up to 2k) between the failing STXR and
the retry of the LDXR.
This patch solves the problem by retrying the STXR a bounded number of
times (4) before breaking out of the LL/SC loop and looking for
something else to do.
Cc: <stable@vger.kernel.org>
Fixes: bd35a4adc4 ("arm64: Port SWP/SWPB emulation support from arm")
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
It was invented for sdio only, and should not be used for sdmmc
or emmc. Remove it.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
- Select corediv clk for all mvebu v7 SoC
- Fix clocksource for CP110 master SPI0 for Armada 7K/8K
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Merge tag 'mvebu-fixes-4.8-3' of git://git.infradead.org/linux-mvebu into fixes
mvebu fixes for 4.8 (part 3)
- Select corediv clk for all mvebu v7 SoC
- Fix clocksource for CP110 master SPI0 for Armada 7K/8K
* tag 'mvebu-fixes-4.8-3' of git://git.infradead.org/linux-mvebu:
arm64: dts: marvell: fix clocksource for CP110 master SPI0
ARM: mvebu: Select corediv clk for all mvebu v7 SoC
Signed-off-by: Olof Johansson <olof@lixom.net>
Commit 8a71f0c656 ("arm64: sysreg: replace open-coded mrs_s/msr_s with
{read,write}_sysreg_s") introduced a write_sysreg_s macro for writing
to system registers that are not supported by binutils.
Unfortunately, this was implemented with the wrong template (%0 vs %x0),
so in the case that we are writing a constant 0, we will generate
invalid instruction syntax and bail with a cryptic assembler error:
| Error: constant expression required
This patch fixes the template.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
