linux-stable.git/arch/arm/boot/compressed, branch linux-3.5.y

ARM: 7532/1: decompressor: reset SCTLR.TRE for VMSA ARMv7 cores

2012-10-02T17:39:24+00:00

commit e1e5b7e4251c7538ca08c2c5545b0c2fbd8a6635 upstream.

This patch zeroes the SCTLR.TRE bit prior to setting the mapping as
cacheable for ARMv7 cores in the decompressor, ensuring that the
memory region attributes are obtained from the C and B bits, not from
the page tables.

Cc: Nicolas Pitre 
Reviewed-by: Will Deacon 
Signed-off-by: Matthew Leach 
Signed-off-by: Will Deacon 
Signed-off-by: Russell King 
Signed-off-by: Greg Kroah-Hartman

ARM: 7501/1: decompressor: reset ttbcr for VMSA ARMv7 cores

2012-10-02T17:38:59+00:00

commit dbece45894d3ab1baac15a96dc4e1e8e23f64a93 upstream.

When enabling the MMU for ARMv7 CPUs, the decompressor does not touch
the ttbcr register, assuming that it will be zeroed (N == 0, EAE == 0).
Given that only EAE is defined as 0 for non-secure copies of the
register (and a bootloader such as kexec may leave it set to 1 anyway),
we should ensure that we reset the register ourselves before turning on
the MMU.

This patch zeroes TTBCR.EAE and TTBCR.N prior to enabling the MMU for
ARMv7 cores in the decompressor, configuring us exclusively for 32-bit
translation tables via TTBR0.

Acked-by: Nicolas Pitre 
Signed-off-by: Matthew Leach 
Signed-off-by: Will Deacon 
Signed-off-by: Russell King 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2012-05-22T16:23:24+00:00

Pull first batch of arm-soc cleanups from Olof Johansson:
 "These cleanups are basically all over the place.  The idea is to
  collect changes with minimal impact but large number of changes so we
  can avoid them from distracting in the diffstat in the other series.

  A significant number of lines get removed here, in particular because
  the ixp2000 and ixp23xx platforms get removed.  These have never been
  extremely popular and have fallen into disuse over time with no active
  maintainer taking care of them.  The u5500 soc never made it into a
  product, so we are removing it from the ux500 platform.

  Many good cleanups also went into the at91 and omap platforms, as has
  been the case for a number of releases."

Trivial modify-delete conflicts in arch/arm/mach-{ixp2000,ixp23xx}

* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (152 commits)
  ARM: clps711x: Cleanup IRQ handling
  ARM clps711x: Removed unused header mach/time.h
  ARM: clps711x: Added note about support EP731x CPU to Kconfig
  ARM: clps711x: Added missing register definitions
  ARM: clps711x: Used own subarch directory for store header file
  Dove: Fix Section mismatch warnings
  ARM: orion5x: ts78xx debugging changes
  ARM: orion5x: remove PM dependency from ts78xx
  ARM: orion5x: ts78xx fix NAND resource off by one
  ARM: orion5x: ts78xx whitespace cleanups
  Orion5x: Fix Section mismatch warnings
  Orion5x: Fix warning: struct pci_dev declared inside paramter list
  ARM: clps711x: Combine header files into one for clps711x-targets
  ARM: S3C24XX: Use common macro to define resources on mach-qt2410.c
  ARM: S3C24XX: Use common macro to define resources on mach-osiris.c
  ARM: EXYNOS: Adapt to cpuidle core time keeping and irq enable
  ARM: S5PV210: Use common macro to define resources on mach-smdkv210.c
  ARM: S5PV210: Use common macro to define resources on dev-audio.c
  ARM: S5PC100: Use common macro to define resources on dev-audio.c
  ARM: S5P64X0: Use common macro to define resources on dev-audio.c
  ...

Merge branch 'v3-removal' into for-linus

2012-05-21T14:15:33+00:00

Conflicts:
	arch/arm/boot/compressed/head.S

ARM: decompressor: avoid speculative prefetch from non-RAM areas

2012-05-10T08:48:34+00:00

We setup identity MMU mappings across the entire 4GB of space, which
are permissionless because the domain is set to manager.

This unfortunately allows ARMv6 and later CPUs to speculatively
prefetch from the entire address space, which can cause undesirable
side effects if those regions contain devices.

As we setup the mappings with read/write permission, we can switch
the domain to client mode, and then use the XN bit for ARMv6 and
above to control speculative prefetch to non-RAM areas.

Reported-by: R Sricharan 
Acked-by: Santosh Shilimkar 
Signed-off-by: Russell King

ARM: Remove ARMv3 support from decompressor

2012-05-09T14:18:19+00:00

Signed-off-by: Russell King

Merge tag 'at91-3.5-cleanup' of git://github.com/at91linux/linux-at91 into next/cleanup

2012-04-22T20:28:48+00:00

Nicolas Ferre  writes:
 First batch of AT91 cleanup for 3.5 kernel.
 - The biggest improvement of this series is the ability to compile several
   AT91 SoCs in one kernel image.
   For now on it's limited to the DT-enabled boards but we can compile all
   the core together.
 - The Kconfig series is stacked before other patches as it is simple and
   non-intrusive. Its goal is to remove too restrictive dependencies on
   SoC names. This will allow to add support for newer SoC seamlessly.
 - Some very "cosmetic" Kconfig changes are also added (entry names,
   comments, etc.).

* tag 'at91-3.5-cleanup' of git://github.com/at91linux/linux-at91: (19 commits)
  ARM: at91: add defconfig for device tree
  ARM: at91/dt: do not specify the board any more
  ARN: at91: introduce SOC_AT91xxx define to allow to compile SoC core support
  ARM: at91: add SOC_AT91SAM9 kconfig option to factorise select
  ARM: at91: pm select memory controler at runtime
  ARM: at91: move at91_init_leds to board init
  ARM: at91: do not pin mux the UARTs in init_early
  ARM: at91: drop at91_set_serial_console
  ARM: at91: uncompress: autodetect the uart to use
  ARM: at91: uncompress Store UART address in a variable
  hwrng: Kconfig: remove dependency for atmel-rng driver
  Input: Kconfig: remove dependency for atmel_tsadcc driver
  rtc: Kconfig: remove dependency for AT91 rtc driver
  ARM: at91/Kconfig: website link for AT91SAM9G20-EK
  ARM: at91/Kconfig: add AT91SAM9x5 family to AT91_EARLY_DBGU0 entry
  ARM: at91/Kconfig: add clarifications to AT91SAM9M10G45-EK entry
  ARM: at91/Kconfig: add comment to at91sam9x5 family entry
  ARM: at91/Kconfig: change at91sam9g45 entry
  ARM: at91: change AT91 Kconfig entry comment

Also updates the cleanup branch to v3.4-rc3.

Signed-off-by: Arnd Bergmann

ARM: 7380/1: DT: do not add a zero-sized memory property

2012-04-13T13:05:41+00:00

Some bootloaders are broken enough to expose an ATAG_MEM with
a null size. Converting such tag to a memory node leads to
an unbootable system.

Skip over zero sized ATAG_MEM to avoid this situation.

Acked-by: Nicolas Pitre 
Signed-off-by: Marc Zyngier 
Signed-off-by: Russell King

ARM: 7379/1: DT: fix atags_to_fdt() second call site

2012-04-13T13:05:41+00:00

atags_to_fdt() returns 1 when it fails to find a valid FDT signature.
The CONFIG_ARM_ATAG_DTB_COMPAT code is supposed to retry with another
location, but only does so when the initial call doesn't fail.

Fix this by using the correct condition in the assembly code.

Acked-by: Nicolas Pitre 
Signed-off-by: Marc Zyngier 
Cc: stable@vger.kernel.org
Signed-off-by: Russell King

ARM: remove ixp23xx and ixp2000 platforms

2012-04-06T13:26:18+00:00

ixp2xxx platforms have had no real changes since ~2006 and the maintainer
has said on irc that they can be removed:

13:05 < nico> do you still care about ixp2000?
13:22 < lennert> not really, no
13:58 < nico> do you think we could remove it from the kernel tree?
14:01 < lennert> go for it, and remove ixp23xx too while you're at it

Removing will help simplify ARM consolidation in general and PCI re-work
specifically.

Signed-off-by: Rob Herring 
Cc: Randy Dunlap 
Acked-by: Lennert Buytenhek