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Commit Graph

83594 Commits

Author SHA1 Message Date
Arnd Bergmann
4022acdb5b Merge branch 'renesas/boards2' into next/late
Conflicts:
	arch/arm/mach-shmobile/setup-r8a7778.c

This is a dependency for the Renesas sh-sci updates.

Signedf-off-by: Arnd Bergmann <arnd@arndb.de>
2013-06-27 14:26:06 +02:00
Olof Johansson
37c5a9f7d7 Merge branch 'sti/soc' into next/late
From Srinivas Kandagatla <srinivas.kandagatla@st.com>:

This patch-set adds basic support for STMicroelectronics STi series SOCs
which includes STiH415 and STiH416 with B2000 and B2020 board support.

STiH415 and STiH416 are dual-core ARM Cortex-A9 CPU, designed for
use in Set-top-boxes. The SOC support is available in mach-sti which
contains support code for STiH415, STiH416 SOCs including the generic
board support.

The reason for adding two SOCs at this patch set is to show that no new
C code is required for second SOC(STiH416) support.

* sti/soc:
  ARM: stih41x: Add B2020 board support
  ARM: stih41x: Add B2000 board support
  ARM: sti: Add DEBUG_LL console support
  ARM: sti: Add STiH416 SOC support
  ARM: sti: Add STiH415 SOC support

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25 13:43:28 -07:00
Olof Johansson
2655e82835 Merge branch 'nspire/soc' into next/late
From Daniel Tang <dt.tangr@gmail.com>

This is the initial platform code for the TI-Nspire graphing
calculators. The platform support is rather unspectacular, but still
contains platform data for the LCD panel, which will get removed once
there is a DT binding for the AMBA CLCD driver.

* nspire/soc:
  arm: Add Initial TI-Nspire support
  arm: Add device trees for TI-Nspire hardware

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25 13:43:18 -07:00
Srinivas Kandagatla
40e3e67253 ARM: stih41x: Add B2020 board support
B2020 ADI board is reference board for STIH415/416 SOCs, it has 2 x
UART, 4x USB, 1 x Ethernet, 1 x SATA, 1 x PCIe, and 2GB RAM  with
standard set-top box IPs.

This patch adds initial support to B2020 with STiH415/416 with SBC_UART1
as console and a heard beat LED.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
CC: Stephen Gallimore <stephen.gallimore@st.com>
CC: Stuart Menefy <stuart.menefy@st.com>
CC: Arnd Bergmann <arnd@arndb.de>

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25 13:42:51 -07:00
Srinivas Kandagatla
f1148dba64 ARM: stih41x: Add B2000 board support
B2000 board is reference board for STIH415/416 SOCs, it has
2 x UART, 4x USB, 2 x Ethernet, 1 x SATA, 1 x PCIe, and 1GB RAM.

This patch add initial support to b2000 with STiH415/416 with UART2 as
console and a heard beat LED.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
CC: Stephen Gallimore <stephen.gallimore@st.com>
CC: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25 13:42:50 -07:00
Srinivas Kandagatla
5026aecf9b ARM: sti: Add DEBUG_LL console support
This patch adds low level debug uart support to sti based SOCs.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
CC: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25 13:27:02 -07:00
Srinivas Kandagatla
15969b4577 ARM: sti: Add STiH416 SOC support
The STiH416 is advanced HD AVC processor with 3D graphics acceleration
and 1.2-GHz ARM Cortex-A9 SMP CPU.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
CC: Stephen Gallimore <stephen.gallimore@st.com>
CC: Stuart Menefy <stuart.menefy@st.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Linus Walleij <linus.walleij@linaro.org>

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25 13:26:58 -07:00
Srinivas Kandagatla
65ebcc1158 ARM: sti: Add STiH415 SOC support
The STiH415 is the next generation of HD, AVC set-top box processors for
satellite, cable, terrestrial and IP-STB markets. It is an ARM Cortex-A9
1.0 GHz, dual-core CPU.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
CC: Stephen Gallimore <stephen.gallimore@st.com>
CC: Stuart Menefy <stuart.menefy@st.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25 13:26:47 -07:00
Olof Johansson
cbe461f654 based on tags/soc-exynos5420-1
- add pinctrl support for exynos5420
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Merge tag 'soc-exynos5420-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/late

From Kukjin Kim, this adds pinctrl support for Exynos 5420.

* tag 'soc-exynos5420-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  pinctrl: exynos: add exynos5420 SoC specific data
  ARM: dts: add pinctrl support to EXYNOS5420

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25 08:50:18 -07:00
Daniel Tang
9851ca5774 arm: Add Initial TI-Nspire support
This patch adds support for the TI-Nspire platform.

Changes between v1 and v2:
* Added GENERIC_IRQ_CHIP to platform Kconfig

Signed-off-by: Daniel Tang <dt.tangr@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-06-21 20:06:30 +02:00
Daniel Tang
d907849e0d arm: Add device trees for TI-Nspire hardware
This patch adds device trees for describing the TI-Nspire hardware.

Changes between v1 and v2:
* Change "keymap" binding to the standard "linux,keymap" binding.

Signed-off-by: Daniel Tang <dt.tangr@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-06-21 20:06:29 +02:00
Arnd Bergmann
e8f2ca9715 based on tags/common-clk-audio
- add support for exynos5420 SoC
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Merge tag 'soc-exynos5420-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/late

From Kukjin Kim:

based on tags/common-clk-audio
- add support for exynos5420 SoC

* tag 'soc-exynos5420-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:

  ARM: EXYNOS: extend soft-reset support for EXYNOS5420
  ARM: EXYNOS: add secondary CPU boot base location for EXYNOS5420
  clocksource: exynos_mct: use (request/free)_irq calls for local timer registration
  ARM: dts: Add initial device tree support for EXYNOS5420
  clk: exynos5420: register clocks using common clock framework
  ARM: EXYNOS: use four additional chipid bits to identify EXYNOS family
  serial: samsung: select EXYNOS specific driver data if ARCH_EXYNOS is defined
  ARM: EXYNOS: Add support for EXYNOS5420 SoC
  ARM: dts: list the CPU nodes for EXYNOS5250
  ARM: dts: fork out common EXYNOS5 nodes

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-06-21 15:00:24 +02:00
Arnd Bergmann
704b1005d1 Renesas ARM based SoC cleanups for v3.11
__initdata annotations for the r8a7790 SoC by Morimoto-san.
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Merge tag 'renesas-cleanup-for-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/late

From Simon Horman:

Renesas ARM based SoC cleanups for v3.11

__initdata annotations for the r8a7790 SoC by Morimoto-san.

* tag 'renesas-cleanup-for-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: (158 commits)
  ARM: shmobile: r8a7790: add __initdata on resource and device data

Based on 'renesas-pinmux-for-v3.11' and 'renesas-soc-for-v3.11

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-06-21 14:54:09 +02:00
Leela Krishna Amudala
d81c6cbec1 ARM: dts: add pinctrl support to EXYNOS5420
Add the required pin configuration support to EXYNOS5420
using pinctrl interface.

Signed-off-by: Leela Krishna Amudala <l.krishna@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Acked-by: Tomasz Figa <t.figa@samsung.com>
Tested-by : Sunil Joshi <joshi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 22:18:48 +09:00
Chander Kashyap
eff4e7c7f3 ARM: EXYNOS: extend soft-reset support for EXYNOS5420
Extend the soft reset support for EXYNOS5420 SoC.

Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 04:09:37 +09:00
Chander Kashyap
1580be3d36 ARM: EXYNOS: add secondary CPU boot base location for EXYNOS5420
The location at which the boot address is specified for secondary
CPUs of EXYNOS5420 is SYSRAM base + 4. Update the cpu_boot_reg
function accordingly.

Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 04:09:36 +09:00
Chander Kashyap
34dcedfbf9 ARM: dts: Add initial device tree support for EXYNOS5420
Add initial device tree nodes for EXYNOS5420 SoC and SMDK5420 board.

Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 04:09:35 +09:00
Chander Kashyap
c6fd0fe85a ARM: EXYNOS: use four additional chipid bits to identify EXYNOS family
Use chipid[27:20] bits to identify the EXYNOS family while setting
up the serial port during the uncompression setup. This uses four
additional bits of chipid to identify the EXYNOS family since this
is required for identifying EXYNOS5420 SoC.

Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 04:09:33 +09:00
Chander Kashyap
191d754f5b ARM: EXYNOS: Add support for EXYNOS5420 SoC
EXYNOS5420 is new SoC in Samsung's Exynos5 SoC series. Add
initial support for this new SoC.

Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 04:09:32 +09:00
Chander Kashyap
1897d2f32f ARM: dts: list the CPU nodes for EXYNOS5250
Instead of having to specify the number for CPUs in EXYNOS5250 in
platsmp.c file, let the number of CPUs be determined by having this
information listed in EXYNOS5250 device tree file.

Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 04:09:17 +09:00
Chander Kashyap
e6c21cbab5 ARM: dts: fork out common EXYNOS5 nodes
In preparation of adding support for EXYNOS5420, which has many
peripherals similar to EXYNOS5250, a new common EXYNOS5 device tree
source file is created out of the exising EXYNOS5250 device tree
source file. Only the common nodes required for basic boot up on
EXYNOS5420 based boards are moved into this new file and the rest
of the common nodes would be moved subsequently.

EXYNOS5440 SoC is quite different from EXYNOS5250 and EXYNOS5420.
Hence it is not possible to reuse "exynos5.dtsi" for EXYNOS5440.

Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 04:08:57 +09:00
Padmavathi Venna
916ec47ed8 ARM: dts: add clock provider information for i2s controllers in Exynos5250
Add clock lookup information for i2s controllers on exynos5250 SoC.

Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 03:28:42 +09:00
Padmavathi Venna
bba23d954f ARM: dts: add Exynos audio subsystem clock controller node
Audio subsystem introduced in s5pv210 and exynos platforms
which has a internal clock controller. This patch adds a node
for the same on exynos5250.

Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 03:28:41 +09:00
Padmavathi Venna
3799279f70 ARM: dts: use #include for all device trees for Samsung
Replace /include/ (dtc) with #include (C pre-processor) for all
Samsung DT files

Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 03:28:40 +09:00
Kukjin Kim
166bc934f5 Merge branch 'v3.11-next/s3c24xx-dt-2' into v3.11-next/dt-n-clk-audio 2013-06-19 03:27:44 +09:00
Heiko Stuebner
52c76e44f1 ARM: S3C24XX: update uart addresses in s3c2416-dt auxdata
Commit 9ee51f01ee (tty: serial/samsung: make register definitions
global) removed the S3C2410_PA_UARTX defines that the newly merged
s3c2416 dt support still expected.

So update mach-s3c2416-dt.c to use the S3C24XX_PA_UART constant until
we have support for the common clock framework the the s3c2416-dt.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 02:40:18 +09:00
Tushar Behera
5f13269130 ARM: dts: Set BUCK7 as always on for Origen board
The LDO for LCD driver is currently not handled by any of the drivers.
This disables the LDO during booting time. To fix this, the LDO
is forced to enabled always.

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 00:41:56 +09:00
Sachin Kamat
7c1a26a076 ARM: dts: Add FIMD node to Origen4210 board
Added FIMD and display timing node to Origen4210 board.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 00:41:51 +09:00
Sachin Kamat
8e1b0ceef7 ARM: dts: Add LCD related pinctrl entries for exynos4210
Adds pinctrl entries required by FIMD.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 00:41:46 +09:00
Sachin Kamat
6e0778befc ARM: dts: Add PWM related pinctrl entries for exynos4210
PWM nodes are added to EXYNOS4210 pinctrl DT file.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 00:41:41 +09:00
Sergei Shtylyov
2c83322ce8 ARM: shmobile: BOCK-W: change Ether device name
When changing the name of Ether platform device in the commit c02f846938 (ARM:
shmobile: r8a7778: fix Ether device name), I completely forgot that there's also
platform  device name used in bockw_pinctrl_map[], so the commit "ARM: shmobile:
BOCK-W: add Ether support" went in with the old "sh-eth" device name. Now change
it to "r8a777x-ether" in accordance with the commits that are now in  the  'net-
next.git' repository,  otherwise BOCK-W Ether support won't work in 3.11.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-06-18 16:22:45 +09:00
Doug Anderson
de39310ddf ARM: dts: Enable RTC node for exynos5250-snow
By default the exynos RTC is disabled.  Enable it for snow.  There's
also an external RTC on the max77686 PMIC but we haven't yet enabled
that.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-18 06:46:20 +09:00
Tushar Behera
5776d6efb5 ARM: dts: Enable RTC node for Arndale
The issues reported in commit 522ccdb6fd ("ARM: dts: Disable the RTC
by default on exynos5") are no longer reproduced on EXYNOS5250 based
Arndale board. Hence re-enabling RTC support for Arndale board.

This is helpful for testing S2R on Arndale board.

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-18 06:46:06 +09:00
Giridhar Maruthy
995bcbcb95 ARM: dts: Removing pdma for exynos5440
Since the pdma works only in secure mode, accessing the same
in hypervisor mode gives an abort. As we are not using pdma
anywhere, removing the same.

Signed-off-by: Giridhar Maruthy <giridhar.m@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-18 06:42:46 +09:00
Subash Patel
a7dec8d3dd ARM: dts: update bootargs to support 8GiB for SSDK5440 and SD5v1
Since ssdk5440 and sd5v1 have 8GiB memory, this patch
updates bootargs for them.

Signed-off-by: Subash Patel <subash.rp@samsung.com>
Signed-off-by: Jungseok Lee <jays.lee@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-18 06:41:04 +09:00
Amit Daniel Kachhap
afbbf92710 ARM: dts: Add more opp levels in exynos5440
This patch updates cpu frequency level from 1500 to 800MHZ in steps
of 100MHZ. The corresponding voltage(in uV) is also added.

Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-18 06:39:41 +09:00
Padmavathi Venna
40cb43bd19 ARM: dts: Add wm8994 regulator support on smdk5250
This patch adds the required regulator supplies and properties
for wm8994 codec on smdk5250 board.

Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-18 06:38:13 +09:00
Girish K S
dabd3f9d00 ARM: dts: enable spi for EXYNOS5440 SOC
This patch enables the SPI in EXYNOS5440 SoC. The NOR
Flash can be accessed by enabling the spi interface

Signed-off-by: Girish K S <ks.giri@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-18 06:35:14 +09:00
Linus Torvalds
e6694d984a ARM: SoC fixes for 3.10-rc
Another week, another batch of fixes for arm-soc platforms.
 
 Again, nothing controversial. A few more than would be ideal, but all
 are valid fixes. In particular the prima2 panic patch is critical since
 it fixes a problem where multiplatform kernels panic on all but prima2
 hardware.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "These are a little later than I planned on since I got caught up with
  handling merges for 3.11 most of the week.

  Another week, another batch of fixes for arm-soc platforms.

  Again, nothing controversial.  A few more than would be ideal, but all
  are valid fixes.  In particular the prima2 panic patch is critical
  since it fixes a problem where multiplatform kernels panic on all but
  prima2 hardware."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: SAMSUNG: pm: Adjust for pinctrl- and DT-enabled platforms
  ARM: prima2: fix incorrect panic usage
  arm: mvebu: armada-xp-{gp,openblocks-ax3-4}: specify PCIe range
  ARM: Kirkwood: handle mv88f6282 cpu in __kirkwood_variant().
  ARM: omap3: clock: fix wrong container_of in clock36xx.c
  ARM: dts: OMAP5: Fix missing PWM capability to timer nodes
  ARM: dts: omap4-panda|sdp: Fix mux for twl6030 IRQ pin and msecure line
  ARM: dts: AM33xx: Fix properties on gpmc node
  arm: omap2: fix AM33xx hwmod infos for UART2
  ARM: OMAP3: Fix iva2_pwrdm settings for 3703
2013-06-15 11:49:48 -10:00
Linus Torvalds
5938930e71 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc fixes from Benjamin Herrenschmidt:
 "So here are 3 fixes still for 3.10.  Fixes are simple, bugs are nasty
  (though not recent regressions, nasty enough) and all targeted at
  stable"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Fix missing/delayed calls to irq_work
  powerpc: Fix emulation of illegal instructions on PowerNV platform
  powerpc: Fix stack overflow crash in resume_kernel when ftracing
2013-06-14 19:25:04 -10:00
Benjamin Herrenschmidt
230b303479 powerpc: Fix missing/delayed calls to irq_work
When replaying interrupts (as a result of the interrupt occurring
while soft-disabled), in the case of the decrementer, we are exclusively
testing for a pending timer target. However we also use decrementer
interrupts to trigger the new "irq_work", which in this case would
be missed.

This change the logic to force a replay in both cases of a timer
boundary reached and a decrementer interrupt having actually occurred
while disabled. The former test is still useful to catch cases where
a CPU having been hard-disabled for a long time completely misses the
interrupt due to a decrementer rollover.

CC: <stable@vger.kernel.org> [v3.4+]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
2013-06-15 12:33:30 +10:00
Paul Mackerras
bf593907f7 powerpc: Fix emulation of illegal instructions on PowerNV platform
Normally, the kernel emulates a few instructions that are unimplemented
on some processors (e.g. the old dcba instruction), or privileged (e.g.
mfpvr).  The emulation of unimplemented instructions is currently not
working on the PowerNV platform.  The reason is that on these machines,
unimplemented and illegal instructions cause a hypervisor emulation
assist interrupt, rather than a program interrupt as on older CPUs.
Our vector for the emulation assist interrupt just calls
program_check_exception() directly, without setting the bit in SRR1
that indicates an illegal instruction interrupt.  This fixes it by
making the emulation assist interrupt set that bit before calling
program_check_interrupt().  With this, old programs that use no-longer
implemented instructions such as dcba now work again.

CC: <stable@vger.kernel.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-06-15 12:24:11 +10:00
Michael Ellerman
0e37739b1c powerpc: Fix stack overflow crash in resume_kernel when ftracing
It's possible for us to crash when running with ftrace enabled, eg:

  Bad kernel stack pointer bffffd12 at c00000000000a454
  cpu 0x3: Vector: 300 (Data Access) at [c00000000ffe3d40]
      pc: c00000000000a454: resume_kernel+0x34/0x60
      lr: c00000000000335c: performance_monitor_common+0x15c/0x180
      sp: bffffd12
     msr: 8000000000001032
     dar: bffffd12
   dsisr: 42000000

If we look at current's stack (paca->__current->stack) we see it is
equal to c0000002ecab0000. Our stack is 16K, and comparing to
paca->kstack (c0000002ecab3e30) we can see that we have overflowed our
kernel stack. This leads to us writing over our struct thread_info, and
in this case we have corrupted thread_info->flags and set
_TIF_EMULATE_STACK_STORE.

Dumping the stack we see:

  3:mon> t c0000002ecab0000
  [c0000002ecab0000] c00000000002131c .performance_monitor_exception+0x5c/0x70
  [c0000002ecab0080] c00000000000335c performance_monitor_common+0x15c/0x180
  --- Exception: f01 (Performance Monitor) at c0000000000fb2ec .trace_hardirqs_off+0x1c/0x30
  [c0000002ecab0370] c00000000016fdb0 .trace_graph_entry+0xb0/0x280 (unreliable)
  [c0000002ecab0410] c00000000003d038 .prepare_ftrace_return+0x98/0x130
  [c0000002ecab04b0] c00000000000a920 .ftrace_graph_caller+0x14/0x28
  [c0000002ecab0520] c0000000000d6b58 .idle_cpu+0x18/0x90
  [c0000002ecab05a0] c00000000000a934 .return_to_handler+0x0/0x34
  [c0000002ecab0620] c00000000001e660 .timer_interrupt+0x160/0x300
  [c0000002ecab06d0] c0000000000025dc decrementer_common+0x15c/0x180
  --- Exception: 901 (Decrementer) at c0000000000104d4 .arch_local_irq_restore+0x74/0xa0
  [c0000002ecab09c0] c0000000000fe044 .trace_hardirqs_on+0x14/0x30 (unreliable)
  [c0000002ecab0fb0] c00000000016fe3c .trace_graph_entry+0x13c/0x280
  [c0000002ecab1050] c00000000003d038 .prepare_ftrace_return+0x98/0x130
  [c0000002ecab10f0] c00000000000a920 .ftrace_graph_caller+0x14/0x28
  [c0000002ecab1160] c0000000000161f0 .__ppc64_runlatch_on+0x10/0x40
  [c0000002ecab11d0] c00000000000a934 .return_to_handler+0x0/0x34
  --- Exception: 901 (Decrementer) at c0000000000104d4 .arch_local_irq_restore+0x74/0xa0

  ... and so on

__ppc64_runlatch_on() is called from RUNLATCH_ON in the exception entry
path. At that point the irq state is not consistent, ie. interrupts are
hard disabled (by the exception entry), but the paca soft-enabled flag
may be out of sync.

This leads to the local_irq_restore() in trace_graph_entry() actually
enabling interrupts, which we do not want. Because we have not yet
reprogrammed the decrementer we immediately take another decrementer
exception, and recurse.

The fix is twofold. Firstly make sure we call DISABLE_INTS before
calling RUNLATCH_ON. The badly named DISABLE_INTS actually reconciles
the irq state in the paca with the hardware, making it safe again to
call local_irq_save/restore().

Although that should be sufficient to fix the bug, we also mark the
runlatch routines as notrace. They are called very early in the
exception entry and we are asking for trouble tracing them. They are
also fairly uninteresting and tracing them just adds unnecessary
overhead.

[ This regression was introduced by fe1952fc0a
  "powerpc: Rework runlatch code" by myself --BenH
]

CC: <stable@vger.kernel.org> [v3.4+]
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-06-15 12:21:57 +10:00
Linus Torvalds
33c929c06e Device tree bug fixes to v3.10-rc5
This branch contains the following bug fixes:
 - Fix locking vs. interrupts. Bug caught by lockdep checks
 - Fix parsing of cpp #line directive output by dtc
 - Fix 'make clean' for dtc temporary files.
 
 There is also a commit that regenerates the dtc lexer and parser files
 with Bison 2.5. The only purpose of this commit is to separate the
 functional change in the dtc bug fix from the code generation change
 caused by a different Bison version.
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Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux

Pull device tree bug fixes from Grant Likely:
 "This branch contains the following bug fixes:
   - Fix locking vs. interrupts. Bug caught by lockdep checks
   - Fix parsing of cpp #line directive output by dtc
   - Fix 'make clean' for dtc temporary files.

  There is also a commit that regenerates the dtc lexer and parser files
  with Bison 2.5.  The only purpose of this commit is to separate the
  functional change in the dtc bug fix from the code generation change
  caused by a different Bison version"

* tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux:
  dtc: ensure #line directives don't consume data from the next line
  dtc: Update generated files to output from Bison 2.5
  of: Fix locking vs. interrupts
  kbuild: make sure we clean up DTB temporary files
2013-06-13 15:32:17 -07:00
Benjamin Herrenschmidt
d25d86949b of: Fix locking vs. interrupts
The OF code uses irqsafe locks everywhere except in a handful of functions
for no obvious reasons. Since the conversion from the old rwlocks, this
now triggers lockdep warnings when used at interrupt time. At least one
driver (ibmvscsi) seems to be doing that from softirq context.

This converts the few non-irqsafe locks into irqsafe ones, making them
consistent with the rest of the code.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
2013-06-13 22:12:14 +01:00
Linus Torvalds
cb03dc094a Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Peter Anvin:
 "Another set of fixes, the biggest bit of this is yet another tweak to
  the UEFI anti-bricking code; apparently we finally got some feedback
  from Samsung as to what makes at least their systems fail.  This set
  should actually fix the boot regressions that some other systems (e.g.
  SGI) have exhibited.

  Other than that, there is a patch to avoid a panic with particularly
  unhappy memory layouts and two minor protocol fixes which may or may
  not be manifest bugs"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Fix typo in kexec register clearing
  x86, relocs: Move __vvar_page from S_ABS to S_REL
  Modify UEFI anti-bricking code
  x86: Fix adjust_range_size_mask calling position
2013-06-13 13:08:51 -07:00
Linus Torvalds
dcae7f2dfc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
 "Three kvm related memory management fixes, a fix for show_trace, a fix
  for early console output and a patch from Ben to help prevent compile
  errors in regard to irq functions (or our lack thereof)"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/pci: Implement IRQ functions if !PCI
  s390/sclp: fix new line detection
  s390/pgtable: make pgste lock an explicit barrier
  s390/pgtable: Save pgste during modify_prot_start/commit
  s390/dumpstack: fix address ranges for asynchronous and panic stack
  s390/pgtable: Fix guest overindication for change bit
2013-06-13 11:02:31 -07:00
H. Peter Anvin
45df901cc8 * More tweaking to the EFI variable anti-bricking algorithm. Quite a
few users were reporting boot regressions in v3.9. This has now been
    fixed with a more accurate "minimum storage requirement to avoid
    bricking" value from Samsung (5K instead of 50%) and code to trigger
    garbage collection when we near our limit - Matthew Garrett.
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Merge tag 'efi-urgent' into x86/urgent

 * More tweaking to the EFI variable anti-bricking algorithm. Quite a
   few users were reporting boot regressions in v3.9. This has now been
   fixed with a more accurate "minimum storage requirement to avoid
   bricking" value from Samsung (5K instead of 50%) and code to trigger
   garbage collection when we near our limit - Matthew Garrett.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-06-13 08:59:23 -07:00
Kuninori Morimoto
f9094c526b ARM: shmobile: r8a7790: add __initdata on resource and device data
These data will be kmemdup()'ed on
platform_device_add_resources() and platform_device_add_data()
This patch removed "const" to avoid section type conflict
with r8a7790_boards_compat_dt

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-06-13 14:47:34 +09:00
Simon Horman
12dd975251 Renesas ARM based SoC pinmux and GPIO update for v3.11
SH-PFC:
 * Entries for INTC external IRQs
 * Remove dependency on GPIOLIB
 * PFC support for r8a7790 SoC
 * Pinmux support for r8a7778 SoC
 * Increase pin group and function coverage for sh7372, r8a7740,
   r8a7778, r8a7779 and r8a7790 SoCs
 * Use pinctrl mapping on mackerel, ap4evb, armadillo800eva,
   bonito, bockw, lager boards
 * Use RCAR_GP_PIN macro in marzen board
 * Remove unused GPIOs for sh7372, sh73a0, r8a7740 and r8a7790 SoCs
 * Add bias (pull-up/down) pinconf support for r8a7740 SoC
 * Add VCCQ support for sh73a0
 
 GPIO car:
 * Add RCAR_GP_PIN macro
 * Add support for IRQ_TYPE_EDGE_BOTH
 * Make the platform data gpio_base field signed
 
 The GPIO changes have been included as the RCAR_GP_PIN and
 IRQ_TYPE_EDGE_BOTH changes are depended on by SH-PFC changes.
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mergetag object 413bfd0e67
 type commit
 tag renesas-soc-for-v3.11
 tagger Simon Horman <horms@verge.net.au> 1370590998 +0900
 
 Renesas ARM-based SoC updates for v3.11
 
 * Increased clock coverage for r8a7740, r8a73a4, r8a7778 and r8a7790
 * Use fixed clock ratio for r8a7778
 * Always use shmobile_setup_delay for sh73a0
 * Add add CPUFreq support for sh73a0
 * Check kick bit before changing rate on sh73a0
 * Do not overwrite all div4 clock operations on sh73a0
 
 * Cleanup SH_FIXED_RATIO_CLK and SH_FIXED_RATIO_CLK macros
 * sh73a0: Use DEFINE_RES_MEM*() everywhere
 * r8a7740: Make private clock arrays static
 * r8a7778: Correct model number
 
 The last four changes listed above are cleanups. I have included them
 in this series as all bar the last one are dependencies of non-cleanup
 patches.
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Merge tags 'renesas-pinmux-for-v3.11' and 'renesas-soc-for-v3.11' into cleanup

This merge has been performed in order to provide the pre-requisites for
a cleanup patch for the lager board to annotate various structures
with __initdata.

Conflicts:
	arch/arm/mach-shmobile/Kconfig
	arch/arm/mach-shmobile/include/mach/r8a7778.h
	arch/arm/mach-shmobile/setup-r8a7778.c
2013-06-13 14:45:20 +09:00