2135 Commits

Author SHA1 Message Date
Mark Salyzyn
77f3228f77 arm64: AArch32 user space PC alignment exception
ARMv7 does not have a PC alignment exception. ARMv8 AArch32
user space however can produce a PC alignment exception. Add
handler so that we do not dump an unexpected stack trace in
the logs.

Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-16 14:55:49 +01:00
Catalin Marinas
7db743c6d8 arm64: Minor coding style fixes for kc_offset_to_vaddr and kc_vaddr_to_offset
These were introduced by commit 03875ad52fdd (arm64: add
kc_offset_to_vaddr and kc_vaddr_to_offset macro).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-16 14:34:53 +01:00
Arnd Bergmann
ee04242bec Qualcomm ARM64 Updates for v4.4
* Add RNG device tree node
 * Add MSM8x16 serial UART1 node
 * Enable eMMC on apq8016-sbc board
 * Fix I2C pinconf sleep state function
 * Add MSM8916 I2C nodes
 * Enable I2C busses on LS and HS on APQ8016-sbc
 * Enable SPI busses on LS and HS on APQ8016-sbc
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Merge tag 'qcom-arm64-for-4.4' of git://codeaurora.org/quic/kernel/agross-msm into next/dt

Pull "Qualcomm ARM64 Updates for v4.4" from Andy Gross:

* Add RNG device tree node
* Add MSM8x16 serial UART1 node
* Enable eMMC on apq8016-sbc board
* Fix I2C pinconf sleep state function
* Add MSM8916 I2C nodes
* Enable I2C busses on LS and HS on APQ8016-sbc
* Enable SPI busses on LS and HS on APQ8016-sbc

* tag 'qcom-arm64-for-4.4' of git://codeaurora.org/quic/kernel/agross-msm:
  arm64: dts: apq8016-sbc: enable spi buses on LS and HS
  arm64: dts: apq8016-sbc: enable i2c buses on LS and HS
  arm64: dts: qcom: Add msm8916 I2C nodes.
  arm64: dts: fix i2c pinconf sleep state function
  arm64: dts: qcom: Enable eMMC on apq8016-sbc board
  arm64: dts: qcom: Add 8x16 Serial UART1 node
  arm64: dts: qcom: Add RNG device tree node
2015-10-15 23:09:17 +02:00
Arnd Bergmann
3b2c05644b SCPI support on ARM64 Juno Development Platform
1. SRAM, MHU mailbox and SCPI support
   2. CPU topology using cpu-map
   3. Clock support for all the cpus
   4. Support for SoC sensors
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Merge tag 'juno-scpi-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into next/dt

Merge "SCPI support on ARM64 Juno Development Platform" from Sudeep Holla:

  1. SRAM, MHU mailbox and SCPI support
  2. CPU topology using cpu-map
  3. Clock support for all the cpus
  4. Support for SoC sensors

* tag 'juno-scpi-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  arm64: dts: Add sensor node to Juno dt
  arm64: dts: add clock support for all the cpus
  arm64: dts: add CPU topology on Juno
  arm64: dts: add SRAM, MHU mailbox and SCPI support on Juno
2015-10-15 22:38:10 +02:00
Arnd Bergmann
dc7a499674 Marvell Berlin ARM64 SoC for 4.4 take 1
- enable ARCH_REQUIRE_GPIOLIB for DW GPIO driver
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Merge tag 'berlin64-soc-for-4.4-1' of git://git.infradead.org/users/hesselba/linux-berlin into next/soc

Merge "Marvell Berlin ARM64 SoC for 4.4 take 1" from Sebastian Hesselbarth:
- enable ARCH_REQUIRE_GPIOLIB for DW GPIO driver

* tag 'berlin64-soc-for-4.4-1' of git://git.infradead.org/users/hesselba/linux-berlin:
  arm64: berlin: enable ARCH_REQUIRE_GPIOLIB
2015-10-15 22:04:18 +02:00
Arnd Bergmann
d819e7a752 Qualcomm ARM Based Device Tree Updates for v4.4
* Add DT binding document for SMEM
 * Add SMD, RPM, and Regulator nodes on MSM8974
 * Remove extra reg element from iadc device
 * Remove redunandant i2c pinctrl properties on APQ8064
 * Remove unnecessary eeprom label on IFC6410
 * Remove unnecessary eeprom label from QS600
 * Add PM8921 RTC support on APQ8064
 * Add PM8921 pwrkey support on APQ8064
 * Prefix GSBI6 uart pins on APQ8064 correctly
 * Add missing GSBI7 uart pinctrl on APQ8064
 * Add missing GSBI7 uart pinctrl on IFC6410
 * Add missing GSBI7 pinctrl uart property on QS600
 * Add pwrseq support for WLAN on IFC6410
 * Add pwrseq support for WLAN on QS600
 * Add notify led support on IFC6410
 * Add SD card detect support onQS600
 * Add #power-domain-cells property to documentation
 * Add Qualcomm SMBB binding document
 * Add PM8941 charge node
 * Fix typo in disabled property on MSM8974
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Merge tag 'qcom-dt-for-4.4' of git://codeaurora.org/quic/kernel/agross-msm into next/dt

Pull "Qualcomm ARM Based Device Tree Updates for v4.4" from Andy Gross:

* Add DT binding document for SMEM
* Add SMD, RPM, and Regulator nodes on MSM8974
* Remove extra reg element from iadc device
* Remove redunandant i2c pinctrl properties on APQ8064
* Remove unnecessary eeprom label on IFC6410
* Remove unnecessary eeprom label from QS600
* Add PM8921 RTC support on APQ8064
* Add PM8921 pwrkey support on APQ8064
* Prefix GSBI6 uart pins on APQ8064 correctly
* Add missing GSBI7 uart pinctrl on APQ8064
* Add missing GSBI7 uart pinctrl on IFC6410
* Add missing GSBI7 pinctrl uart property on QS600
* Add pwrseq support for WLAN on IFC6410
* Add pwrseq support for WLAN on QS600
* Add notify led support on IFC6410
* Add SD card detect support onQS600
* Add #power-domain-cells property to documentation
* Add Qualcomm SMBB binding document
* Add PM8941 charge node
* Fix typo in disabled property on MSM8974

* tag 'qcom-dt-for-4.4' of git://codeaurora.org/quic/kernel/agross-msm:
  ARM: dts: msm8974: fix typo in "disabled" property
  ARM: dts: qcom-pm8941: Add charger node
  dt-binding: power: Add Qualcomm SMBB binding
  arm: dts: qcom: Add #power-domain-cells property
  ARM: dts: qs600: Add SD card detect support.
  ARM: dts: apq8064-ifc6410: add notify led support.
  ARM: dts: qs600: add pwrseq support to WLAN
  ARM: dts: ifc6410: Add pwrseq support for WLAN
  ARM: dts: qs600: Add missing pinctrl property for gsbi7 uart
  ARM: dts: ifc6410: Add missing pinctrl to gsbi7 uart
  ARM: dts: apq8064: add missing gsbi7 uart pinctrl
  ARM: dts: apq8064: Prefix the gsbi6 uart pins correctly
  ARM: dts: apq8064: add pm8921 pwrkey support
  ARM: dts: apq8064: add pm8921 rtc
  ARM: dts: qs600: remove unnecessary eeprom label
  ARM: dts: ifc6410: remove unnecessary eeprom label
  ARM: dts: apq8064: remove redundant i2c pinctrl properties
  ARM: dts: qcom: Remove extra reg element from iadc device
  ARM: dts: msm8974: Add smd, rpm and regulator nodes
  soc: qcom: Add device tree binding for SMEM
2015-10-15 17:21:01 +02:00
Linus Walleij
5078f77e14 ARM64: juno: add NOR flash to device tree
The Juno motherboard has a NOR flash on the motherboard, enable
this to be accessed with the CFI flash driver. Results after
enabling MTD, MTD_CFI, MTD_PHYSMAP, MTD_PHYSMAP_OF,
MTD_CFI_INTELEXT:

8000000.flash: Found 2 x16 devices at 0x0 in 32-bit bank.
Manufacturer ID 0x000089 Chip ID 0x008919
Intel/Sharp Extended Query Table at 0x010A
Intel/Sharp Extended Query Table at 0x010A
Intel/Sharp Extended Query Table at 0x010A
Intel/Sharp Extended Query Table at 0x010A
Intel/Sharp Extended Query Table at 0x010A
Using buffer write method
Using auto-unlock on power-up/resume
cfi_cmdset_0001: Erase suspend on write enabled
erase region 0: offset=0x0,size=0x40000,blocks=255
erase region 1: offset=0x3fc0000,size=0x10000,blocks=4

Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-10-15 17:20:12 +02:00
Robin Murphy
876945dbf6 arm64: Hook up IOMMU dma_ops
With iommu_dma_ops in place, hook them up to the configuration code, so
IOMMU-fronted devices will get them automatically.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-10-15 16:41:47 +02:00
Robin Murphy
13b8629f65 arm64: Add IOMMU dma_ops
Taking some inspiration from the arch/arm code, implement the
arch-specific side of the DMA mapping ops using the new IOMMU-DMA layer.

Since there is still work to do elsewhere to make DMA configuration happen
in a more appropriate order and properly support platform devices in the
IOMMU core, the device setup code unfortunately starts out carrying some
workarounds to ensure it works correctly in the current state of things.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-10-15 16:41:37 +02:00
Ian Campbell
8ee57b8182 ARM64: dts: vexpress: Use a symlink to vexpress-v2m-rs1.dtsi from arch=arm
Commit 9ccd608070b6 "arm64: dts: add device tree for ARM SMM-A53x2 on
LogicTile Express 20MG" added a new dts file to arch/arm64 which
included "../../../../arm/boot/dts/vexpress-v2m-rs1.dtsi", i.e. a
.dtsi supplied by arch/arm.

Unfortunately this causes some issues for the split device tree
repository[0], since things get moved around there. In that context
the new .dts ends up at src/arm64/arm/vexpress-v2f-1xv7-ca53x2.dts
while the include is at src/arm/vexpress-v2m-rs1.dtsi.

The sharing of the .dtsi is legitimate since the baseboard is the same
for various vexpress systems whatever processor they use.

Previously I attempted to resolve this by creating a shared location
for such things but we have been unable to come to a consensus on
where that should be.

Instead this patch simply replaces the use of ../../ in the dts
/include/ with a symlink in arch/arm64/boot/dts/arm pointing to the
file arch/arm/boot/dts.

Since the split device tree repo will shortly be required to flatten
symlinks for other reasons this will cause the dtsi file to appear in
both src/arm and src/arm64 in the split repo, which is an improvement
on not building for arm64 now.

[0] https://git.kernel.org/cgit/linux/kernel/git/devicetree/devicetree-rebasing.git/

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Kristina Martsenko <kristina.martsenko@arm.com>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Frank Rowand <frank.rowand@sonymobile.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: arm@kernel.org
Cc: linux-kbuild@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-10-14 17:55:50 +02:00
Arnd Bergmann
c52864fbc2 Marvell Berlin ARM64 DT for 4.4 take 1
- add BG4CT GPIO nodes
 - add BG4CT STB reference board
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Merge tag 'berlin64-dt-for-4.4-1' of git://git.infradead.org/users/hesselba/linux-berlin into next/dt

Merge "Marvell Berlin ARM64 DT for 4.4 take 1" from Sebastian Hesselbarth:
- add BG4CT GPIO nodes
- add BG4CT STB reference board

* tag 'berlin64-dt-for-4.4-1' of git://git.infradead.org/users/hesselba/linux-berlin:
  arm64: dts: add dts file for Marvell Berlin4CT STB board
  arm64: dts: berlin4ct: add GPIO nodes
2015-10-14 17:45:38 +02:00
Ingo Molnar
790a2ee242 * Make the EFI System Resource Table (ESRT) driver explicitly
non-modular by ripping out the module_* code since Kconfig doesn't
    allow it to be built as a module anyway - Paul Gortmaker
 
  * Make the x86 efi=debug kernel parameter, which enables EFI debug
    code and output, generic and usable by arm64 - Leif Lindholm
 
  * Add support to the x86 EFI boot stub for 64-bit Graphics Output
    Protocol frame buffer addresses - Matt Fleming
 
  * Detect when the UEFI v2.5 EFI_PROPERTIES_TABLE feature is enabled
    in the firmware and set an efi.flags bit so the kernel knows when
    it can apply more strict runtime mapping attributes - Ard Biesheuvel
 
  * Auto-load the efi-pstore module on EFI systems, just like we
    currently do for the efivars module - Ben Hutchings
 
  * Add "efi_fake_mem" kernel parameter which allows the system's EFI
    memory map to be updated with additional attributes for specific
    memory ranges. This is useful for testing the kernel code that handles
    the EFI_MEMORY_MORE_RELIABLE memmap bit even if your firmware
    doesn't include support - Taku Izumi
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Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into core/efi

Pull v4.4 EFI updates from Matt Fleming:

  - Make the EFI System Resource Table (ESRT) driver explicitly
    non-modular by ripping out the module_* code since Kconfig doesn't
    allow it to be built as a module anyway. (Paul Gortmaker)

  - Make the x86 efi=debug kernel parameter, which enables EFI debug
    code and output, generic and usable by arm64. (Leif Lindholm)

  - Add support to the x86 EFI boot stub for 64-bit Graphics Output
    Protocol frame buffer addresses. (Matt Fleming)

  - Detect when the UEFI v2.5 EFI_PROPERTIES_TABLE feature is enabled
    in the firmware and set an efi.flags bit so the kernel knows when
    it can apply more strict runtime mapping attributes - Ard Biesheuvel

  - Auto-load the efi-pstore module on EFI systems, just like we
    currently do for the efivars module. (Ben Hutchings)

  - Add "efi_fake_mem" kernel parameter which allows the system's EFI
    memory map to be updated with additional attributes for specific
    memory ranges. This is useful for testing the kernel code that handles
    the EFI_MEMORY_MORE_RELIABLE memmap bit even if your firmware
    doesn't include support. (Taku Izumi)

Note: there is a semantic conflict between the following two commits:

  8a53554e12e9 ("x86/efi: Fix multiple GOP device support")
  ae2ee627dc87 ("efifb: Add support for 64-bit frame buffer addresses")

I fixed up the interaction in the merge commit, changing the type of
current_fb_base from u32 to u64.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-14 16:51:34 +02:00
Ingo Molnar
c7d77a7980 Merge branch 'x86/urgent' into core/efi, to pick up a pending EFI fix
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-14 16:05:18 +02:00
James Liao
e34573c95a arm64: dts: mt8173: Add clocks for SCPSYS unit
Add clocks needed by Mediatek VENC and VENC_LT power domianis.
These clocks were needed by accessing subsystem's registers,
so they need to be enabled before power on these subsystems.

Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
2015-10-14 15:43:13 +02:00
James Liao
67e56c5651 arm64: dts: mt8173: Add subsystem clock controller device nodes
This patch adds device nodes providing subsystem clocks on MT8173,
includes mmsys, imgsys, vdecsys, vencsys and vencltsys.

Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
2015-10-14 15:24:16 +02:00
Will Deacon
eb93ce2cb7 arm64: compat: wire up new syscalls
Commit 208473c1f3ac ("ARM: wire up new syscalls") hooked up the new
userfaultfd and membarrier syscalls for ARM, so do the same for our
compat syscall table in arm64.

Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-10-14 13:51:41 +01:00
Srinivas Kandagatla
00a9e053da arm64: dts: apq8016-sbc: enable spi buses on LS and HS
This patch enables spi buses on low speed and high speed expansion
connectors on DB410C

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-13 21:53:03 -05:00
Srinivas Kandagatla
7c6764b052 arm64: dts: apq8016-sbc: enable i2c buses on LS and HS
This patch enables i2c buses on low speed and high speed expansion
connectors on DB410C.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-13 21:53:03 -05:00
Srinivas Kandagatla
7f5b092168 arm64: dts: qcom: Add msm8916 I2C nodes.
This patch adds missing support for i2c0 and i2c6, this support is
required to connect the i2c slaves on LS expansion on DB410c.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-13 21:53:03 -05:00
Srinivas Kandagatla
dce4f63b12 arm64: dts: fix i2c pinconf sleep state function
This patch fixes the i2c pinctrl sleep state by changing the pinconf
function to be in gpio mode rather than i2c.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-13 21:53:03 -05:00
Georgi Djakov
5941c9bb9f arm64: dts: qcom: Enable eMMC on apq8016-sbc board
Enable the eMMC on the APQ8016 SBC board (also known as DragonBoard 410c),
so that we can use its internal storage.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-13 21:53:02 -05:00
Andy Gross
9f43020dc4 arm64: dts: qcom: Add 8x16 Serial UART1 node
This patch adds the nodes required to support the UART1 node on the
MSM8916 and also fixes the sleep pins function for UART2.

Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-13 21:53:02 -05:00
Stanimir Varbanov
f6d24bf30c arm64: dts: qcom: Add RNG device tree node
Adds rng device tree node for msm8916 SoCs.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-13 21:53:02 -05:00
Rajendra Nayak
89c7e67128 arm: dts: qcom: Add #power-domain-cells property
clock controller nodes which also support power domains (gdscs') need
to have a #power-domain-cells property. Add these for gcc and mmcc
nodes of msm8974, gcc of apq8084 and msm8916.
Also update gcc and mmcc bindings for it.

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-13 16:40:01 -05:00
Thomas Gleixner
e50226b4b8 Merge branch 'linus' into irq/core
Bring in upstream updates for patches which depend on them
2015-10-13 19:00:14 +02:00
Catalin Marinas
52fa1927e9 Revert "arm64: ioremap: add ioremap_cache macro"
This reverts commit 1b6d7f8742d5d46c478f10c9e57da18d049b116d.

This patch would conflict with Dan Williams' "tree-wide convert to
memremap()" series (ioremap_cache replaced by arch_memremap)

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-13 16:18:17 +01:00
yalin wang
03875ad52f arm64: add kc_offset_to_vaddr and kc_vaddr_to_offset macro
This patch add kc_offset_to_vaddr() and kc_vaddr_to_offset(),
the default version doesn't work on arm64, because arm64 kernel address
is below the PAGE_OFFSET, like module address and vmemmap address are
all below PAGE_OFFSET address.

Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-13 15:15:24 +01:00
yalin wang
1b6d7f8742 arm64: ioremap: add ioremap_cache macro
Add ioremap_cache macro, because some code will test if this macro
is defined or not, and will generate a generric version if not defined,
for example, memremap.c do like this.

Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-13 15:10:25 +01:00
Will Deacon
83040123fd arm64: kasan: fix issues reported by sparse
Sparse reports some new issues introduced by the kasan patches:

  arch/arm64/mm/kasan_init.c:91:13: warning: no previous prototype for
  'kasan_early_init' [-Wmissing-prototypes] void __init kasan_early_init(void)
             ^
  arch/arm64/mm/kasan_init.c:91:13: warning: symbol 'kasan_early_init'
  was not declared. Should it be static? [sparse]

This patch resolves the problem by adding a prototype for
kasan_early_init and marking the function as asmlinkage, since it's only
called from head.S.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Acked-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-13 14:54:42 +01:00
Greg Kroah-Hartman
378102f364 Merge 4.3-rc5 into tty-next
We want the tty fixes and reverts in here as well so that people can
properly test and use it.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-12 10:54:35 -07:00
Linus Walleij
ee7f881b59 ARM64: kasan: print memory assignment
This prints out the virtual memory assigned to KASan in the
boot crawl along with other memory assignments, if and only
if KASan is activated.

Example dmesg from the Juno Development board:

Memory: 1691156K/2080768K available (5465K kernel code, 444K rwdata,
2160K rodata, 340K init, 217K bss, 373228K reserved, 16384K cma-reserved)
Virtual kernel memory layout:
    kasan   : 0xffffff8000000000 - 0xffffff9000000000   (    64 GB)
    vmalloc : 0xffffff9000000000 - 0xffffffbdbfff0000   (   182 GB)
    vmemmap : 0xffffffbdc0000000 - 0xffffffbfc0000000   (     8 GB maximum)
              0xffffffbdc2000000 - 0xffffffbdc3fc0000   (    31 MB actual)
    fixed   : 0xffffffbffabfd000 - 0xffffffbffac00000   (    12 KB)
    PCI I/O : 0xffffffbffae00000 - 0xffffffbffbe00000   (    16 MB)
    modules : 0xffffffbffc000000 - 0xffffffc000000000   (    64 MB)
    memory  : 0xffffffc000000000 - 0xffffffc07f000000   (  2032 MB)
      .init : 0xffffffc0007f5000 - 0xffffffc00084a000   (   340 KB)
      .text : 0xffffffc000080000 - 0xffffffc0007f45b4   (  7634 KB)
      .data : 0xffffffc000850000 - 0xffffffc0008bf200   (   445 KB)

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-12 17:46:43 +01:00
Andrey Ryabinin
39d114ddc6 arm64: add KASAN support
This patch adds arch specific code for kernel address sanitizer
(see Documentation/kasan.txt).

1/8 of kernel addresses reserved for shadow memory. There was no
big enough hole for this, so virtual addresses for shadow were
stolen from vmalloc area.

At early boot stage the whole shadow region populated with just
one physical page (kasan_zero_page). Later, this page reused
as readonly zero shadow for some memory that KASan currently
don't track (vmalloc).
After mapping the physical memory, pages for shadow memory are
allocated and mapped.

Functions like memset/memmove/memcpy do a lot of memory accesses.
If bad pointer passed to one of these function it is important
to catch this. Compiler's instrumentation cannot do this since
these functions are written in assembly.
KASan replaces memory functions with manually instrumented variants.
Original functions declared as weak symbols so strong definitions
in mm/kasan/kasan.c could replace them. Original functions have aliases
with '__' prefix in name, so we could call non-instrumented variant
if needed.
Some files built without kasan instrumentation (e.g. mm/slub.c).
Original mem* function replaced (via #define) with prefixed variants
to disable memory access checks for such files.

Signed-off-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-12 17:46:36 +01:00
Andrey Ryabinin
fd2203dd35 arm64: move PGD_SIZE definition to pgalloc.h
This will be used by KASAN latter.

Signed-off-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-12 17:46:30 +01:00
Manjeet Pawar
c9692657c0 arm64: Fix MINSIGSTKSZ and SIGSTKSZ
MINSIGSTKSZ and SIGSTKSZ for ARM64 are not correctly set in latest kernel.
This patch fixes this issue.

This issue is reported in LTP (testcase: sigaltstack02.c).
Testcase failed when sigaltstack() called with stack size "MINSIGSTKSZ - 1"
Since in Glibc-2.22, MINSIGSTKSZ is set to 5120 but in kernel
it is set to 2048 so testcase gets failed.

Testcase Output:
sigaltstack02 1  TPASS  :  stgaltstack() fails, Invalid Flag value,errno:22
sigaltstack02 2  TFAIL  :  sigaltstack() returned 0, expected -1,errno:12

Reported Issue in Glibc Bugzilla:
Bugfix in Glibc-2.22: [Bug 16850]
https://sourceware.org/bugzilla/show_bug.cgi?id=16850

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Akhilesh Kumar <akhilesh.k@samsung.com>
Signed-off-by: Manjeet Pawar <manjeet.p@samsung.com>
Signed-off-by: Rohit Thapliyal <r.thapliyal@samsung.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-10-12 17:40:12 +01:00
Will Deacon
b6dd8e0719 arm64: errata: use KBUILD_CFLAGS_MODULE for erratum #843419
Commit df057cc7b4fa ("arm64: errata: add module build workaround for
erratum #843419") sets CFLAGS_MODULE to ensure that the large memory
model is used by the compiler when building kernel modules.

However, CFLAGS_MODULE is an environment variable and intended to be
overridden on the command line, which appears to be the case with the
Ubuntu kernel packaging system, so use KBUILD_CFLAGS_MODULE instead.

Cc: <stable@vger.kernel.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Fixes: df057cc7b4fa ("arm64: errata: add module build workaround for erratum #843419")
Reported-by: Dann Frazier <dann.frazier@canonical.com>
Tested-by: Dann Frazier <dann.frazier@canonical.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-10-12 17:40:12 +01:00
Will Deacon
305d454aaa arm64: atomics: implement native {relaxed, acquire, release} atomics
Commit 654672d4ba1a ("locking/atomics: Add _{acquire|release|relaxed}()
variants of some atomic operation") introduced a relaxed atomic API to
Linux that maps nicely onto the arm64 memory model, including the new
ARMv8.1 atomic instructions.

This patch hooks up the API to our relaxed atomic instructions, rather
than have them all expand to the full-barrier variants as they do
currently.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-12 17:36:58 +01:00
Ard Biesheuvel
e8f3010f73 arm64/efi: isolate EFI stub from the kernel proper
Since arm64 does not use a builtin decompressor, the EFI stub is built
into the kernel proper. So far, this has been working fine, but actually,
since the stub is in fact a PE/COFF relocatable binary that is executed
at an unknown offset in the 1:1 mapping provided by the UEFI firmware, we
should not be seamlessly sharing code with the kernel proper, which is a
position dependent executable linked at a high virtual offset.

So instead, separate the contents of libstub and its dependencies, by
putting them into their own namespace by prefixing all of its symbols
with __efistub. This way, we have tight control over what parts of the
kernel proper are referenced by the stub.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-12 16:20:12 +01:00
Ard Biesheuvel
207918461e arm64: use ENDPIPROC() to annotate position independent assembler routines
For more control over which functions are called with the MMU off or
with the UEFI 1:1 mapping active, annotate some assembler routines as
position independent. This is done by introducing ENDPIPROC(), which
replaces the ENDPROC() declaration of those routines.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-12 16:19:45 +01:00
Leif Lindholm
7968c0e338 efi/arm64: Clean up efi_get_fdt_params() interface
As we now have a common debug infrastructure between core and arm64 efi,
drop the bit of the interface passing verbose output flags around.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-10-12 14:20:06 +01:00
Leif Lindholm
c9494dc818 arm64: Use core efi=debug instead of uefi_debug command line parameter
Now that we have an efi=debug command line option in the core code, use
this instead of the arm64-specific uefi_debug option.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-10-12 14:20:05 +01:00
Catalin Marinas
cb50ce324e arm64: Fix missing #include in hw_breakpoint.c
A prior commit used to detect the hw breakpoint ABI behaviour based on
the target state missed the asm/compat.h include and the build fails
with !CONFIG_COMPAT.

Fixes: 8f48c0629049 ("arm64: hw_breakpoint: use target state to determine ABI behaviour")
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-12 12:10:53 +01:00
Jean-Philippe Brucker
4f64cb65bf arm/arm64: KVM: Only allow 64bit hosts to build VGICv3
Hardware virtualisation of GICv3 is only supported by 64bit hosts for
the moment. Some VGICv3 bits are missing from the 32bit side, and this
patch allows to still be able to build 32bit hosts when CONFIG_ARM_GIC_V3
is selected.

To this end, we introduce a new option, CONFIG_KVM_ARM_VGIC_V3, that is
only enabled on the 64bit side. The selection is done unconditionally
because CONFIG_ARM_GIC_V3 is always enabled on arm64.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-10-09 23:11:57 +01:00
Jean-Philippe Brucker
72c971262f irqchip/gic-v3: Specialize readq and writeq accesses
On 32bit platforms, we cannot assure that an I/O ldrd or strd will be
done atomically. Besides, an hypervisor would be unable to emulate such
accesses.
In order to allow the AArch32 version of the driver to split them into
two 32bit accesses while keeping the requirement for atomic writes, this
patch specializes the IROUTER and TYPER accesses.
Since the latter is an ID register, it won't need to be read atomically,
but we still avoid future confusion by using gic_read_typer instead of a
generic gic_readq.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-10-09 23:11:53 +01:00
Jean-Philippe Brucker
f6c86a41e1 irqchip/gic-v3: Change unsigned types for AArch32 compatibility
This patch does a few simple compatibility-related changes:
- change the system register access prototypes to their actual size,
- homogenise mpidr accesses with unsigned long,
- force the 64bit register values to unsigned long long.

Note: the list registers are 64bit on GICv3, but the AArch32 vGIC driver
will need to split their values into two 32bit registers: LRn and LRCn.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-10-09 23:11:52 +01:00
Jean-Philippe Brucker
7936e914f7 irqchip/gic-v3: Refactor the arm64 specific parts
This patch moves the GICv3 system register access helpers to
arch/arm64/. Their 32bit counterparts will need to use mrc/mcr accesses
instead of mrs_s/msr_s.

[maz: fixed conflict with Cavium erratum handling]
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-10-09 23:11:50 +01:00
Marc Zyngier
963fcd4095 arm64: cpufeatures: Check ICC_EL1_SRE.SRE before enabling ARM64_HAS_SYSREG_GIC_CPUIF
As the firmware (or the hypervisor) may have disabled SRE access,
check that SRE can actually be enabled before declaring that we
do have that capability.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-10-09 22:16:54 +01:00
Marc Zyngier
d271976dbb arm64: el2_setup: Make sure ICC_SRE_EL2.SRE sticks before using GICv3 sysregs
Contrary to what was originally expected, EL3 firmware can (for whatever
reason) disable GICv3 system register access. In this case, the kernel
explodes very early.

Work around this by testing if the SRE bit sticks or not. If it doesn't,
abort the GICv3 setup, and pray that the firmware has passed a DT that
doesn't contain a GICv3 node.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-10-09 22:16:51 +01:00
Yang Yingliang
217d453d47 arm64: fix a migrating irq bug when hotplug cpu
When cpu is disabled, all irqs will be migratged to another cpu.
In some cases, a new affinity is different, the old affinity need
to be updated and if irq_set_affinity's return value is IRQ_SET_MASK_OK_DONE,
the old affinity can not be updated. Fix it by using irq_do_set_affinity.

And migrating interrupts is a core code matter, so use the generic
function irq_migrate_all_off_this_cpu() to migrate interrupts in
kernel/irq/migration.c.

Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-09 17:40:35 +01:00
Andy Gross
f14b3692c2 arm64: defconfig: Enable devices for MSM8916
This patch enables a number of devices currently supported by the MSM8916
boards.  These include I2C, SPI, DMA, SMEM, SMD, and SMD regulator support.

Signed-off-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-10-09 17:12:28 +02:00
Punit Agrawal
dfacaf0e7c arm64: dts: Add sensor node to Juno dt
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>
2015-10-09 10:26:41 +01:00