Commit graph

25113 commits

Author SHA1 Message Date
Boschung, Rainer
6caa185abd kmp204x/qrio: support for setting the CPU reset request mode
To acheive this, the qrio_uprstreq() function that sets the UPRSTREQN
flag in the qrio RESCNF reg is added.

Signed-off-by: Rainer Boschung <rainer.boschung@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-08-01 14:18:53 -07:00
Boschung, Rainer
a09f470d49 kmp204x: set CPU watchdog reset reason flag
Check the core timer status register (TSR) for watchdog reset,
and and set the QRIO's reset reason flag REASON1[0] accordingly.

This allows the appliction SW to identify the cpu watchdog as a
reset reason, by setting the REASON1[0] flag in the QRIO.

Signed-off-by: Rainer Boschung <rainer.boschung@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-08-01 14:18:46 -07:00
Boschung, Rainer
807d93d6de kmp204x/qrio: prepare support for the CPU watchdog reset reason
To achieve this, the qrio_cpuwd_flag() function that sets the CPU watchdog
flag in the REASON1 reg is added.

Signed-off-by: Rainer Boschung <rainer.boschung@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-08-01 14:18:40 -07:00
Boschung, Rainer
88ac6ffabb kmp204x: CPU watchdog enabled
The booting of the board is now protected by the CPU watchdog.
A failure during the boot phase will end up in board reset.

Signed-off-by: Rainer Boschung <rainer.boschung@keymile.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-08-01 14:18:34 -07:00
Boschung, Rainer
919e05520f powerpc: mpc85xx watchdog init added to init_func
When CONFIG_WATCHDOG is defined the board initialization just performs
a WATCHDOG_RESET, an initialization of the watchdog is not done.
This has been modified fot the MPC85xx, the board initialization calls
its watchdog initialitzation allowing for full watchdog configuration
very early in the boot phase.

Signed-off-by: Rainer Boschung <rainer.boschung@keymile.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-08-01 14:18:28 -07:00
Boschung, Rainer
0f8062b25b mpc85xx: watchdog initialisation added
Function to inititialize the cpu watchdog added.

Signed-off-by: Rainer Boschung <rainer.boschung@keymile.com>
[York Sun: Add prototype in watchdog.h]
Reviewed-by: York Sun <yorksun@freescale.com>
2014-08-01 14:18:17 -07:00
Boschung, Rainer
60b295672d powerpc: macros for e500mc timer regs added
For e500mc cores the watchdog timer period has to be set by means of a
6bit value, that defines the bit of the timebase counter used to signal
a watchdog timer exception on its 0 to 1 transition.
The macro used to set the watchdog period TCR_WP, was redefined for e500mc
to support 6 WP setting.

The parameter (x) given to the macro specifies the prescaling factor of
the time base clock (fTB):

watchdog_period = 1/fTB * 2^x

Signed-off-by: Rainer Boschung <rainer.boschung@keymile.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-08-01 14:18:07 -07:00
Boschung, Rainer
3345d18d5b mpc85xx: fix interrupt init to not affect watchdog
TCR watchdog bit are overwritten when dec interrupt is enabled.
This has been fixed with this patch.

Signed-off-by: Rainer Boschung <rainer.boschung@keymile.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-08-01 14:17:44 -07:00
Dmitry Lifshitz
6e7b7df4df env_mmc: support env partition setup in runtime
Add callback with __weak annotation to allow setup of environment
partition number in runtime from a board file.

Propagate mmc_switch_part() return value into init_mmc_for_env() instead
of -1 in case of failure.

Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-08-01 20:12:15 +03:00
Dmitry Lifshitz
ac77f42d09 env_mmc: add mmc_get_env_addr() prototype
Add missing mmc_get_env_addr() prototype in environment.h

Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-08-01 20:11:59 +03:00
Bo Shen
da55c66ec9 MMC: atmel_mci: enable high speed mode support
If the MCI IP version >= 0x300, it supports hight speed mode
option, this patch enable it.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-08-01 20:01:33 +03:00
Bo Shen
70ec3286e6 MMC: atmel_mci: add configuration register definition
Add configuration register definition, this register only
exists on MCI IP version >= 0x300.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-08-01 20:01:22 +03:00
Bo Shen
cd60ebd430 MMC: atmel_mci: refactor setting the mode register
The mode register is different between MCI IP version.
So, according to MCI IP version to set the mode register.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-08-01 20:01:09 +03:00
Chin Liang See
6ace153d13 mmc/dw_mmc: Fix clock divider calculation error for bypass mode
To fix the clock divider calculation error when the controller
clock same as the operating frequency. This is known as bypass
mode. In this mode, the divider should be 0.

Signed-off-by: Chin Liang See <clsee@altera.com>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
Cc: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Mischa Jonker <mjonker@synopsys.com>
2014-08-01 19:45:32 +03:00
Marek Vasut
dae0f5c644 mmc: s3c: Add SD driver
Implement SD driver for the S3C24xx family. This implementation
is currently only capable of using the PIO transfers, DMA is not
supported.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
Cc: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-08-01 19:24:34 +03:00
Marek Vasut
7eca6b6327 arm: s3c: Unify the S3C24xx SDI structure
Unify the register structure so they can be easily used across all
of S3C24xx lineup.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
Cc: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-08-01 19:24:23 +03:00
Lubomir Rintel
64973023df bcm2835_sdhci: Add SDHCI_QUIRK_NO_HISPD_BIT flag
Seems like the controller doesn't support the flag. None of the hi-speed cards
I've tried could be read, while they successfully worked with the quirk enabled.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
2014-08-01 18:57:02 +03:00
DrEagle
3fe3b4fb1c ARM: kirkwood: add mvsdio driver
This patch add Marvell kirkwood MVSDIO/MMC driver
and enable it for Sheevaplugs and OpenRD boards.

Signed-off-by: Gerald Kerma <drEagle@doukki.net>
Reviewed-by: Stefan Roese <sr@denx.de>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-08-01 18:44:56 +03:00
Masahiro Yamada
25b4adbba0 include: remove CONFIG_SPL/CONFIG_TPL definition in config headers
Now CONFIG_SPL and CONFIG_TPL are defined in Kconfig.

Remove the redundant definition in config headers.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2014-07-30 14:42:03 -04:00
Masahiro Yamada
c6d12624ae powerpc: remove redundant CPU definition
CONFIG_${CPU} is defined by Kconfig.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Stefan Roese <sr@denx.de>
2014-07-30 14:42:03 -04:00
Masahiro Yamada
90f984e397 kconfig: delete redundant CONFIG_${ARCH} definition
CONFIG_${ARCH} is defined by Kconfig.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2014-07-30 14:42:02 -04:00
Masahiro Yamada
73f30b9b80 buildman: adjust for Kconfig
Use "make <board>_defconfig" instead of "make <board>_config".

Invoke tools/genboardscfg.py to generate boards.cfg when it is missing.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-30 14:42:02 -04:00
Masahiro Yamada
bb6da87d7e MAKEALL: adjust for Kconfig
- Use "make <board>_defconfig" instead of "make <board>_config".

 - Invoke tools/genboardscfg.py to generate boards.cfg when it is
   missing.

 - Show "Building ${BOARD_NAME} board..." message.
   (Prior to Kconfig, instead, mkconfig script displayed
   "Configuring for ${BOARD_NAME} board..." but it was removed.)
   Without this message, we cannot know which board is currently
   being built.

 - Do not show "# configuration written to .config".
   This message is useless and just annoying for MAKEALL.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-30 14:42:02 -04:00
Masahiro Yamada
a2580ebb72 kconfig: remove mkconfig and boards.cfg
The old configuration script is no longer necessary.
Nor is boards.cfg a primary database.
We can generate it with the genboardscfg.py tool
based on the latest Kconfig, defconfig and MAINTAINERS.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-30 14:42:02 -04:00
Masahiro Yamada
3c08e8b856 tools: add genboardscfg.py
Now the primary data for each board is in Kconfig, defconfig and
MAINTAINERS.

It is true boards.cfg is needed for MAKEALL and buildman and might be
useful to brouse all the supported boards in a single database.
But it would be painful to maintain the boards.cfg in sync.

So, this is the solution.
Add a tool to generate the equivalent boards.cfg file based on
the latest Kconfig, defconfig and MAINTAINERS.

We can keep all the functions of MAKEALL and buildman with it.

The best thing would be to change MAKEALL and buildman for not
depending on boards.cfg in the future, but it would take some time.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-30 14:42:02 -04:00
Masahiro Yamada
93d4334f7f Add board MAINTAINERS files
We have switched to Kconfig and the boards.cfg file is going to
be removed. We have to retrieve the board status and maintainers
information from it.

The MAINTAINERS format as in Linux Kernel would be nice
because we can crib the scripts/get_maintainer.pl script.

After some discussion, we chose to put a MAINTAINERS file under each
board directory, not the top-level one because we want to collect
relevant information for a board into a single place.

TODO:
Modify get_maintainer.pl to scan multiple MAINTAINERS files.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Suggested-by: Tom Rini <trini@ti.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-30 08:48:06 -04:00
Masahiro Yamada
51148790f2 kconfig: switch to Kconfig
This commit enables Kconfig.
Going forward, we use Kconfig for the board configuration.
mkconfig will never be used. Nor will include/config.mk be generated.

Kconfig must be adjusted for U-Boot because our situation is
a little more complicated than Linux Kernel.
We have to generate multiple boot images (Normal, SPL, TPL)
from one source tree.
Each image needs its own configuration input.

Usage:

Run "make <board>_defconfig" to do the board configuration.

It will create the .config file and additionally spl/.config, tpl/.config
if SPL, TPL is enabled, respectively.

You can use "make config", "make menuconfig" etc. to create
a new .config or modify the existing one.

Use "make spl/config", "make spl/menuconfig" etc. for spl/.config
and do likewise for tpl/.config file.

The generic syntax of configuration targets for SPL, TPL is:

  <target_image>/<config_command>

Here, <target_image> is either 'spl' or 'tpl'
      <config_command> is 'config', 'menuconfig', 'xconfig', etc.

When the configuration is done, run "make".
(Or "make <board>_defconfig all" will do the configuration and build
in one time.)

For futher information of how Kconfig works in U-Boot,
please read the comment block of scripts/multiconfig.py.

By the way, there is another item worth remarking here:
coexistence of Kconfig and board herder files.

Prior to Kconfig, we used C headers to define a set of configs.

We expect a very long term to migrate from C headers to Kconfig.
Two different infractructure must coexist in the interim.

In our former configuration scheme, include/autoconf.mk was generated
for use in makefiles.
It is still generated under include/, spl/include/, tpl/include/ directory
for the Normal, SPL, TPL image, respectively.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-30 08:48:03 -04:00
Masahiro Yamada
4ce9957029 include: define CONFIG_SPL and CONFIG_TPL as 1
We are about to switch to Kconfig in the next commit.
But there are something to get done beforehand.

In Kconfig, include/generated/autoconf.h defines boolean
CONFIG macros as 1.

CONFIG_SPL and CONFIG_TPL, if defined, must be set to 1.
Otherwise, when switching to Kconfig, the build log
would be sprinkled with warning messages like this:
  warning: "CONFIG_SPL" redefined [enabled by default]

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2014-07-30 08:48:02 -04:00
Masahiro Yamada
516312598a kconfig: add basic Kconfig files
This commit adds more Kconfig files, which were written by hand.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-30 08:48:02 -04:00
Masahiro Yamada
dd84058d24 kconfig: add board Kconfig and defconfig files
This commit adds:
 - arch/${ARCH}/Kconfig
    provide a menu to select target boards
 - board/${VENDOR}/${BOARD}/Kconfig or board/${BOARD}/Kconfig
    set CONFIG macros to the appropriate values for each board
 - configs/${TARGET_BOARD}_defconfig
    default setting of each board

(This commit was automatically generated by a conversion script
based on boards.cfg)

In Linux Kernel, defconfig files are located under
arch/${ARCH}/configs/ directory.
It works in Linux Kernel since ARCH is always given from the
command line for cross compile.

But in U-Boot, ARCH is not given from the command line.
Which means we cannot know ARCH until the board configuration is done.
That is why all the "*_defconfig" files should be gathered into a
single directory ./configs/.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-30 08:48:01 -04:00
Masahiro Yamada
0a9064fb47 kconfig: import Kconfig files from Linux 3.16-rc7
Import
  - scripts/kconfig/*
  - include/linux/kconfig.h
from Linux 3.16-rc7.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2014-07-30 08:47:46 -04:00
Łukasz Majewski
a98b2378e0 boards:trats2: New Trats2 board maintainer
Change-Id: I8e72b942b8816726773d5407ce405d68a1594389
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
2014-07-30 08:47:45 -04:00
Dinh Nguyen
e1b362f442 boards.cfg : Add maintainers entries for SOCFPGA
Add back the maintainers entries for Altera's SOCFPGA platform.

Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
Signed-off-by: Chin Liang See <clsee@altera.com>
2014-07-29 11:51:03 -04:00
Masahiro Yamada
9003a72bfe cosmetic: boards.cfg: fix some maintainers fields
Add a whitespace between the name and the email address.

When switching to Kconfig, the first version of MAINTAINERS files
will be generated based on the boards.cfg file.

So, the maintainers field should be corrected even if it is a really
minor fix.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-29 11:48:57 -04:00
Masahiro Yamada
9979692383 buildman: make sure to invoke GNU Make
Since the command name 'make' may not be GNU Make on some platforms
such as FreeBSD, buildman should call scripts/show-gnu-make to get
the command name for GNU MAKE (and error out if it is not found).

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2014-07-29 11:48:40 -04:00
Masahiro Yamada
e18fd9405c MAKEALL: make sure to invoke GNU Make
Since the command name 'make' may not be GNU Make on some platforms
such as FreeBSD, MAKEALL should call scripts/show-gnu-make to get
the command name for GNU MAKE (and error out if it is not found).

The GNU Make should be searched after parsing options because we want
to allow "MAKEALL -h" even if GNU Make is missing on the system.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-29 11:48:38 -04:00
Masahiro Yamada
b68a406263 scripts: add scripts/show-gnu-make to get GNU Make command name
U-Boot is expected to be built on various platforms.

We should keep in mind that the command 'make' is not always GNU Make,
while all the makefiles are written for GNU Make.

For example, on Linux, people generally do:

  make <board>_config; make

But FreeBSD folks do

  gmake <board>_config; gmake

(The command 'make' on FreeBSD is BSD Make, not GNU Make)

It is not a good idea to hard-code the command name 'make'
in MAKEALL or buildman.

They should call this helper script and get the command name
for GNU Make.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-07-29 11:48:36 -04:00
Tom Rini
362f16b1e9 Merge branch 'master' of git://git.denx.de/u-boot-arm 2014-07-29 09:41:35 -04:00
Tom Rini
302e609fe6 Merge git://www.denx.de/git/u-boot-ppc4xx 2014-07-28 17:48:48 -04:00
Tom Rini
d5f8a6ddd4 Merge branch 'master' of git://git.denx.de/u-boot-mpc85xx 2014-07-28 14:54:29 -04:00
Marc Zyngier
9d195a5461 ARM: HYP/non-sec: remove MIDR check to validate CBAR
Having a form of whitelist to check if we know of a CPU core
and and obtain CBAR is a bit silly.

It doesn't scale (how about A12, A17, as well as other I don't know
about?), and is actually a property of the SoC, not the core.

So either it works and everybody is happy, or it doesn't and
the u-boot port to this SoC is providing the real address via
a configuration option.

The result of the above is that this code doesn't need to exist,
is thus forcefully removed.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-07-28 17:19:55 +02:00
Marc Zyngier
e771a3d538 ARM: HYP/non-sec/PSCI: emit DT nodes
Generate the PSCI node in the device tree.

Also add a reserve section for the "secure" code that lives in
in normal RAM, so that the kernel knows it'd better not trip on
it.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-07-28 17:19:52 +02:00
Ma Haijun
e29607ed97 ARM: convert arch_fixup_memory_node to a generic FDT fixup function
Some architecture needs extra device tree setup. Instead of adding
yet another hook, convert arch_fixup_memory_node to be a generic
FDT fixup function.

[maz: collapsed 3 patches into one, rewrote commit message]

Signed-off-by: Ma Haijun <mahaijuns@gmail.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-07-28 17:19:49 +02:00
Marc Zyngier
38510a4b34 ARM: HYP/non-sec: add the option for a second-stage monitor
Allow the switch to a second stage secure monitor just before
switching to non-secure.

This allows a resident piece of firmware to be active once the
kernel has been entered (the u-boot monitor is dead anyway,
its pages being reused).

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-07-28 17:19:26 +02:00
Marc Zyngier
ecf07a7930 ARM: HYP/non-sec: add generic ARMv7 PSCI code
Implement core support for PSCI. As this is generic code, it doesn't
implement anything really useful (all the functions are returning
Not Implemented).

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-07-28 17:19:18 +02:00
Marc Zyngier
f510aeae68 ARM: HYP/non-sec: allow relocation to secure RAM
The current non-sec switching code suffers from one major issue:
it cannot run in secure RAM, as a large part of u-boot still needs
to be run while we're switched to non-secure.

This patch reworks the whole HYP/non-secure strategy by:
- making sure the secure code is the *last* thing u-boot executes
  before entering the payload
- performing an exception return from secure mode directly into
  the payload
- allowing the code to be dynamically relocated to secure RAM
  before switching to non-secure.

This involves quite a bit of horrible code, specially as u-boot
relocation is quite primitive.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-07-28 17:19:09 +02:00
Marc Zyngier
bf433afd60 ARM: HYP/non-sec: add separate section for secure code
In anticipation of refactoring the HYP/non-secure code to run
from secure RAM, add a new linker section that will contain that
code.

Nothing is using it just yet.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-07-28 17:07:23 +02:00
Marc Zyngier
b726d22da9 ARM: add missing HYP mode constant
In order to be able to use the various mode constants (far more
readable than random hex values), add the missing HYP and A
values.

Also update arm/lib/interrupts.c to display HYP instead of an
unknown value.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-07-28 17:06:35 +02:00
Marc Zyngier
64fd44dcae ARM: non-sec: reset CNTVOFF to zero
Before switching to non-secure, make sure that CNTVOFF is set
to zero on all CPUs. Otherwise, kernel running in non-secure
without HYP enabled (hence using virtual timers) may observe
timers that are not synchronized, effectively seeing time
going backward...

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-07-28 17:06:28 +02:00
Marc Zyngier
800c83522c ARM: HYP/non-sec: add a barrier after setting SCR.NS==1
A CP15 instruction execution can be reordered, requiring an
isb to be sure it is executed in program order.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-07-28 17:06:19 +02:00