Commit Graph

246 Commits

Author SHA1 Message Date
Barry Song
c915bedf22 ARM: CSR: extend the compatibility of gpio controller to pinmux in dts
gpio controller handles the switch of gpio and pinmux. And drivers/pinctrl/pinmux-sirf.c
will contain both gpio and pinmux.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
2011-09-11 09:14:15 +08:00
Barry Song
073adf4fa7 ARM: CSR: add lost Resource Sharing Control(RSC) node in dts
Signed-off-by: Barry Song <Baohua.Song@csr.com>
2011-09-11 09:13:32 +08:00
David Brown
56e2d8a688 ARM: msm: Add devicetree support for msm8660-surf
Adds support for booting via device tree with a simple serial console.

Change-Id: I7f175b8db21928cd13e0fb49f3eed74966a2696f
Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-08-29 12:47:36 -07:00
Paul Mundt
4791d63bd4 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into rmobile-latest 2011-08-08 16:41:23 +09:00
Simon Horman
b3623080ff mmc: sdhi, mmcif: zboot: Correct clock disable logic
This corrects a logic-error that I made in the original implementation.

An alternate patch would be to just remove these lines and
leave the clock running as it is reconfigured later on during
boot anyway.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-08-08 16:38:04 +09:00
Arnd Bergmann
6124a4e430 Merge branch 'imx/dt' into next/dt 2011-07-28 15:25:46 +00:00
Grant Likely
8e267f3da5 arm/dt: tegra devicetree support
Everything required to populate NVIDIA Tegra devices from the device
tree.  This patch adds a new DT_MACHINE_DESC() which matches against
a tegra20 device tree.  So far it only registers the on-chip devices,
but it will be refined in follow on patches to configure clocks and
pin IO from the device tree also.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-28 01:32:04 -06:00
Grant Likely
3ba7222ac9 arm/versatile: Add device tree support
For testing the dt work, define a dt-enabled versatile platform.

This patch adds a new versatile platform for when using the device
tree.  Add platform and amba devices are discovered and registered by
parsing the device tree.  Clocks and initial io mappings are still
configured statically.

This patch still depends on some static platform_data for a few devices
which is passed via the auxdata structure to of_platform_populate(),
but it is a viable starting point until the drivers can get all
configuration data out of the device tree.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-28 01:32:04 -06:00
Linus Torvalds
4b30b6f23a Merge branch 'next/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc:
  MAINTAINERS: add maintainer of CSR SiRFprimaII machine
  ARM: CSR: initializing L2 cache
  ARM: CSR: mapping early DEBUG_LL uart
  ARM: CSR: Adding CSR SiRFprimaII board support
  OMAP4: clocks: Update the clock tree with 4460 clock nodes
  OMAP4: PRCM: OMAP4460 specific PRM and CM register bitshifts
  OMAP4: ID: add omap_has_feature for max freq supported
  OMAP: ID: introduce chip detection for OMAP4460
  ARM: Xilinx: merge board file into main platform code
  ARM: Xilinx: Adding Xilinx board support

Fix up conflicts in arch/arm/mach-omap2/cm-regbits-44xx.h
2011-07-26 17:09:31 -07:00
Rob Herring
5fd1a2ed0e arm/dt: Add dtb make rule
Add a make rule to compile dt blobs for ARM.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Tested-by: Jason Liu <jason.hui@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-25 09:52:12 -06:00
Grant Likely
2b4180af3f arm/dt: Add skeleton dtsi file
Contains the bare minimum template required to boot with the device tree.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-25 09:52:11 -06:00
Russell King
06f365acef Merge branches 'btc', 'dma', 'entry', 'fixes', 'linker-layout', 'misc', 'mmci', 'suspend' and 'vfp' into for-next 2011-07-22 23:08:48 +01:00
Dave Martin
540b573875 ARM: 6999/1: head, zImage: Always Enter the kernel in ARM state
Currently, the documented kernel entry requirements are not
explicit about whether the kernel should be entered in ARM or
Thumb, leading to an ambiguitity about how to enter Thumb-2
kernels.  As a result, the kernel is reliant on the zImage
decompressor to enter the kernel proper in the correct instruction
set state.

This patch changes the boot entry protocol for head.S and Image to
be the same as for zImage: in all cases, the kernel is now entered
in ARM.

Documentation/arm/Booting is updated to reflect this new policy.

A different rule will be needed for Cortex-M class CPUs as and when
support for those lands in mainline, since these CPUs don't support
the ARM instruction set at all: a note is added to the effect that
the kernel must be entered in Thumb on such systems.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-19 12:00:53 +01:00
Arnd Bergmann
3a6cb8ce07 Merge branch 'zynq/master' of git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc into next/soc
Conflicts:
	arch/arm/Kconfig
	arch/arm/mm/Kconfig
2011-07-17 21:43:26 +02:00
Binghua Duan
02c981c07b ARM: CSR: Adding CSR SiRFprimaII board support
SiRFprimaII is the latest generation application processor from CSR’s
Multifunction SoC product family. Designed around an ARM cortex A9 core,
high-speed memory bus, advanced 3D accelerator and full-HD multi-format
video decoder, SiRFprimaII is able to meet the needs of complicated
applications for modern multifunction devices that require heavy concurrent
applications and fluid user experience. Integrated with GPS baseband,
analog and PMU, this new platform is designed to provide a cost effective
solution for Automotive and Consumer markets.

This patch adds the basic support for this SoC and EVB board based on device
tree. It is following the ZYNQ of Xilinx in some degree.

Signed-off-by: Binghua Duan <Binghua.Duan@csr.com>
Signed-off-by: Rongjun Ying <Rongjun.Ying@csr.com>
Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: Yuping Luo <Yuping.Luo@csr.com>
Signed-off-by: Bin Shi <Bin.Shi@csr.com>
Signed-off-by: Huayi Li <Huayi.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2011-07-09 07:19:28 +08:00
Russell King
3002b41bc6 ARM: decompressor: use better output sections
Place read-only data in a .rodata output section, and the compressed
piggy data in .piggydata.  Place the .got.plt section before the .got
section as is standard ELF practise.

This allows the piggydata to be more easily extracted from the
compressed vmlinux file for verification purposes.

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-07 23:35:35 +01:00
Simon Horman
090ab3ff8e ARM: 6886/1: mmc, Add zboot from eSD support for SuperH Mobile ARM
This allows a ROM-able zImage to be written to eSD and for SuperH Mobile
ARM to boot directly from the SDHI hardware block.

This is achieved by the MaskROM loading the first portion of the image into
MERAM and then jumping to it.  This portion contains loader code which
copies the entire image to SDRAM and jumps to it. From there the zImage
boot code proceeds as normal, uncompressing the image into its final
location and then jumping to it.

Cc: Paul Mundt <lethal@linux-sh.org>
Acked-by: Magnus Damm <magnus.damm@gmail.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-06-29 10:00:52 +01:00
Dave Martin
946a105e16 ARM: 6961/1: zImage: Add build-time check for correctly-sized proc_type entries
It is easy to mis-maintain the proc_types table such that the
entries become wrongly-sized and misaligned when the kernel is
built in Thumb-2.

This patch adds an assembly-time check which will turn most common
size/alignment mistakes in this table into build failures, to avoid
having to debug the boot-time kernel hang which would happen if the
resulting kernel were actually booted.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-06-21 11:33:20 +01:00
John Linn
b85a3ef4ac ARM: Xilinx: Adding Xilinx board support
The 1st board support is minimal to get a system up and running
on the Xilinx platform.

This platform reuses the clock implementation from plat-versatile, and
it depends entirely on CONFIG_OF support.  There is only one board
support file which obtains all device information from a device tree
dtb file which is passed to the kernel at boot time.

Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-20 11:52:30 -06:00
Nicolas Pitre
720c60e194 ARM: 6954/1: zImage: fix Thumb2 breakage
Commit af3e4fd37a "ARM: 6859/1: Add writethrough dcache support for
ARM926EJS processor" broke Thumb2 compilation by omitting to maintain
the wide encoding for the added branch instructions which made the
ARM926EJ-S record smaller than expected, breaking the record walk code.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-06-09 10:15:06 +01:00
Russell King
9a55d9752d Merge branch 'devel-stable' into for-linus
Conflicts:
	arch/arm/Kconfig
	arch/arm/mach-ns9xxx/include/mach/uncompress.h
2011-05-23 19:28:04 +01:00
Russell King
ec19628d72 Merge branches 'consolidate', 'ep93xx', 'fixes', 'misc', 'mmci', 'remove' and 'spear' into for-linus 2011-05-23 19:27:40 +01:00
Mark A. Greer
af3e4fd37a ARM: 6859/1: Add writethrough dcache support for ARM926EJS processor
The ARM kernel supports writethrough data cache via the
CONFIG_CPU_DCACHE_WRITETHROUGH option.  However, that
functionality wasn't implemented in the arch/arm/boot/compressed
code.  It is now necessary due to a new ARM926EJS processor
that has an issue with writeback data cache.

Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-12 10:07:00 +01:00
Russell King
362607df9f Merge first four commits of 'zImage_fixes' of git://git.linaro.org/people/nico/linux into fixes 2011-05-07 08:34:40 +01:00
Russell King
7b76415375 Merge branch 'zImage_fixes' of git://git.linaro.org/people/nico/linux into devel-stable 2011-05-07 08:34:02 +01:00
Nicolas Pitre
8d7e4cc2c8 ARM: zImage: make sure no GOTOFF relocs are used with .bss symbols
To be able to relocate the .bss section at run time independently from
the rest of the code, we must make sure that no GOTOFF relocations are
used with .bss symbols.  This usually means that no global variables can
be marked static unless they're also const.

To enforce this, suffice to fail the build whenever a private symbol
is allocated to .bss and list those symbols for convenience.

The user_stack and user_stack_end labels in head.S were converted into
non exported symbols to remove false positives.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Tony Lindgren <tony@atomide.com>
2011-05-07 00:08:03 -04:00
Nicolas Pitre
ccc1c7c6c2 ARM: zImage: don't ignore error returned from decompress()
If decompress() returns an error without calling error(), we must
not attempt to boot the resulting kernel.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Tony Lindgren <tony@atomide.com>
2011-05-07 00:08:01 -04:00
Nicolas Pitre
e40f1e9fb3 ARM: zImage: simplify decompress_kernel()
The return value for decompress_kernel() is no longer used.  Furthermore,
this was obtained and stored in a variable called output_ptr which is
a complete misnomer for what is actually the size of the decompressed
kernel image.  Let's get rid of it.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Tony Lindgren <tony@atomide.com>
2011-05-07 00:08:00 -04:00
Nicolas Pitre
34cc1a8fe0 ARM: zImage: no need to get the decompressed size from the filesystem
In commit d239b1dc09 the hardcoded 4x estimate for the decompressed
kernel size was replaced by the exact Image file size and passed to
the linker as a symbol value.  Turns out that this is unneeded as the
size is already included at the end of the compressed piggy data.
For those compressed formats that don't include this data, the build
system already takes care of appending it using size_append in
scripts/Makefile.lib.  So let's use that instead.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Tony Lindgren <tony@atomide.com>
2011-05-07 00:07:59 -04:00
Nicolas Pitre
ea9df3b168 ARM: zImage: the page table memory must be considered before relocation
For correctness, the initial page table located right before the
decompressed kernel should be considered when determining if relocation
is required.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
2011-05-07 00:07:58 -04:00
Nicolas Pitre
adcc25915b ARM: zImage: make sure not to relocate on top of the relocation code
If the zImage load address is slightly below the relocation address,
there is a risk for the copied data to overwrite the copy loop or
cache flush code that the relocation process requires.  Always
bump the relocation address by the size of that code to avoid this
issue.

Noticed by Tony Lindgren <tony@atomide.com>.

While at it, let's start the copy from the restart symbol which makes
the above code size computation possible by the assembler directly
(same sections), given that we don't need to preserve the code before
that point anyway. And therefore we don't need to carry the _start
pointer in r5 anymore.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Tony Lindgren <tony@atomide.com>
2011-05-07 00:07:53 -04:00
Tony Lindgren
7c2527f0c4 ARM: zImage: Fix bad SP address after relocating kernel
Otherwise cache_clean_flush can overwrite some of the relocated
area depending on where the kernel image gets loaded. This fixes
booting on n900 after commit 6d7d0ae515
(ARM: 6750/1: improvements to compressed/head.S).

Thanks to Aaro Koskinen <aaro.koskinen@nokia.com> for debugging
the address of the relocated area that gets corrupted, and to
Nicolas Pitre <nicolas.pitre@linaro.org> for the other uncompress
related fixes.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-05-06 23:56:43 -04:00
Nicolas Pitre
3bd2cbb955 ARM: zImage: make sure the stack is 64-bit aligned
With ARMv5+ and EABI, the compiler expects a 64-bit aligned stack so
instructions like STRD and LDRD can be used.  Without this, mysterious
boot failures were seen semi randomly with the LZMA decompressor.

While at it, let's align .bss as well.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
CC: stable@kernel.org
2011-05-06 23:55:49 -04:00
Nicolas Pitre
f5178ddd2f ARM: PJ4: remove the ARMv6 compatible cache method entries
The Marvell PJ4 is ARMv7 capable, so we don't support it in
ARMv6 mode anymore.

Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Acked-by: Saeed Bishara <saeed.bishara@gmail.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2011-05-03 15:39:05 -04:00
Stephen Boyd
dfad549d98 ARM: 6826/1: Merge v6 and v7 DEBUG_LL DCC support
The inline assembly differences for v6 vs. v7 are purely
optimizations. On a v7 processor, an mrc with the pc sets the
condition codes to the 28-31 bits of the register being read. It
just so happens that the TX/RX full bits the DCC support code is
testing for are high enough in the register to be put into the
condition codes. On a v6 processor, this "feature" isn't
implemented and thus we have to do the usual read, mask, test
operations to check for TX/RX full. Thus, we can drop the v7
implementation and just use the v6 implementation for both.

Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-03-28 19:01:43 +01:00
Simon Horman
9d9659b6c0 mmc: Add MMC_PROGRESS_*
This is my second attempt to make this enum generally available.
The first attempt added MMCIF_PROGRESS_* to include/linux/mmc/sh_mmcif.h.
However this is not sufficiently generic as the enum will be
used by SDHI boot code.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-03-25 01:24:57 +09:00
Simon Horman
a6558c2d07 mmc, ARM: Rename SuperH Mobile ARM zboot helpers
These headers and helpers will also be used for SDHI boot
so the mmcif name will start to make a lot less sense.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-03-25 01:24:57 +09:00
Linus Torvalds
a44f99c7ef Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: (25 commits)
  video: change to new flag variable
  scsi: change to new flag variable
  rtc: change to new flag variable
  rapidio: change to new flag variable
  pps: change to new flag variable
  net: change to new flag variable
  misc: change to new flag variable
  message: change to new flag variable
  memstick: change to new flag variable
  isdn: change to new flag variable
  ieee802154: change to new flag variable
  ide: change to new flag variable
  hwmon: change to new flag variable
  dma: change to new flag variable
  char: change to new flag variable
  fs: change to new flag variable
  xtensa: change to new flag variable
  um: change to new flag variables
  s390: change to new flag variable
  mips: change to new flag variable
  ...

Fix up trivial conflict in drivers/hwmon/Makefile
2011-03-20 18:14:55 -07:00
matt mooney
21f0b311c6 arm: change to new flag variables
Replace EXTRA_CFLAGS with ccflags-y and EXTRA_AFLAGS with asflags-y.

Signed-off-by: matt mooney <mfm@muteddisk.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-03-17 14:02:55 +01:00
Russell King
bd1274dc00 Merge branch 'v6v7' into devel
Conflicts:
	arch/arm/include/asm/cacheflush.h
	arch/arm/include/asm/proc-fns.h
	arch/arm/mm/Kconfig
2011-03-16 23:35:26 +00:00
Russell King
1f0090a1ea Merge branch 'misc' into devel
Conflicts:
	arch/arm/Kconfig
2011-03-16 23:35:25 +00:00
Russell King
2472f3c8d8 Merge branches 'at91', 'ep93xx', 'errata', 'footbridge', 'fncpy', 'gemini', 'irqdata', 'pm', 'sh', 'smp', 'spear', 'ux500' and 'via' into devel 2011-03-16 23:35:17 +00:00
Nicolas Pitre
1cf7cf06c9 ARM: 6778/1: compressed/head.S: make LDFLAGS_vmlinux into a recursively expanded variable
The simply expanded variable may be evaluated before the target file for
the stat command is up to date or even exists.  Switching to a recursively
expanded variable move the execution of the stat command to the location
where LDFLAGS_vmlinux is actually used, fixing the dependency issue
introduced by patch #6746/1.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-03-09 00:18:48 +00:00
Nicolas Pitre
d239b1dc09 ARM: 6746/1: remove the 4x expansion presumption while decompressing the kernel
We currently presume a 4x expansion to guess the decompressed kernel size
in order to determine if the decompressed kernel is in conflict with
the location where zImage is loaded.  This guess may cause many issues
by overestimating the final kernel image size:

- This may force a needless relocation if the location of zImage was
  fine, wasting some precious microseconds of boot time.

- The relocation may be located way too far, possibly overwriting the
  initrd image in RAM.

- If the kernel image includes a large already-compressed initramfs image
  then the problem is even more exacerbated.

And if by some strange means the 4x guess is too low then we may overwrite
ourselves with the decompressed image.

So let's use the exact decompressed kernel image size instead.  For that
we need to rely on the stat command, but this is hardly a new build
dependency as the kernel already depends on many external commands
to be built provided by the coreutils package where stat is found.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-26 13:39:51 +00:00
Nicolas Pitre
6d7d0ae515 ARM: 6750/1: improvements to compressed/head.S
In the case of a conflict between the memory used by the compressed
kernel with its decompressor code and the memory used for the
decompressed kernel, we currently store the later after the former and
relocate it afterwards.

This would be more efficient to do this the other way around i.e.
relocate the compressed data up front instead, resulting in a smaller
copy.  That also has the advantage of making the code smaller and more
straight forward.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-23 17:24:22 +00:00
Nicolas Pitre
b11fe38883 ARM: 6663/1: make Thumb2 kernel entry point more similar to the ARM one
Some installers would binary patch the kernel zImage to replace the
first few nops with custom instructions.  This breaks the Thumb2 kernel
as the mode switch is right at the beginning.  Let's move it towards the
end of the nop sequence instead.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-23 17:24:19 +00:00
Russell King
a65d29225e ARM: add 'uinstall' target for installing uboot kernels
We have 'install' and 'zinstall' for installing Image and zImage
kernels, so add 'uinstall' to complete the set.

This allows developers to have a ~/bin/installkernel script which (eg)
copies the kernel to the tftp server automatically once the kernel
has built, resulting in a better workflow.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-23 17:24:13 +00:00
Nicolas Pitre
32c3fcb081 ARM: 6739/1: update .gitignore for boot/compressed
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-19 11:24:25 +00:00
Russell King
e399b1a4e1 ARM: v6k: introduce CPU_V6K option
Introduce a CPU_V6K configuration option for platforms to select if they
have a V6K CPU core.  This allows us to identify whether we need to
support ARMv6 CPUs without the V6K SMP extensions at build time.

Currently CPU_V6K is just an alias for CPU_V6, and all places which
reference CPU_V6 are replaced by (CPU_V6 || CPU_V6K).

Select CPU_V6K from platforms which are known to be V6K-only.

Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Sourav Poddar <sourav.poddar@ti.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-02 21:23:26 +00:00
Alexey Charkov
21f47fbc5b ARM: 6597/1: Add basic architecture support for VIA/WonderMedia 85xx SoC's
This adds support for the family of Systems-on-Chip produced initially
by VIA and now its subsidiary WonderMedia that have recently become
widespread in lower-end Chinese ARM-based tablets and netbooks.

Support is included for both VT8500 and WM8505, selectable by a
configuration switch at kernel build time.

Included are basic machine initialization files, register and
interrupt definitions, support for the on-chip interrupt controller,
high-precision OS timer, GPIO lines, necessary macros for early debug,
pulse-width-modulated outputs control, as well as platform device
configurations for the specific drivers implemented elsewhere.

Signed-off-by: Alexey Charkov <alchark@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-25 15:07:01 +00:00
Simon Horman
f45b114991 ARM: 6617/1: mmc, Add zboot from MMC support for SuperH Mobile ARM
This allows a ROM-able zImage to be written to MMC and
for SuperH Mobile ARM to boot directly from the MMCIF
hardware block.

This is achieved by the MaskROM loading the first portion
of the image into MERAM and then jumping to it. This portion
contains loader code which copies the entire image to SDRAM
and jumps to it. From there the zImage boot code proceeds
as normal, uncompressing the image into its final location
and then jumping to it.

Cc: Magnus Damm <magnus.damm@gmail.com>

Russell, please consider merging this for 2.6.38.

This patch depends on:
* "mmc, sh: Move MMCIF_PROGRESS_* into sh_mmcif.h"
  which will be merged though Paul Mundt's rmobile sh-2.6.
  The absence of this patch will break the build if
  the (new) CONFIG_ZBOOT_ROM_MMCIF option is set.
  There are no subtle side-effects.

v2:
Addressed comments by Magnus Damm
* Fix copyright in vrl4.c
* Fix use of #define CONFIG_ZBOOT_ROM_MMCIF in mmcif-sh7372.c
* Initialise LED GPIO lines in head-ap4evb.txt instead of mmcif-sh7372.c
  as this is considered board-specific.

v3:
Addressed comments made in person by Magnus Damm
* Move mmcif_loader to be earlier in the image and
  reduce the number of blocks of boot program loaded by the MaskRom
  from 40 to 8 accordingly.
* Move LED GPIO initialisation into mmcif_progress_init
  - This leaves the partner jet script unbloated
Other
* inline mmcif_update_progress so it is a static inline in a header file

v4:
* Use htole16() and htole32() in v4rl.c to ensure
  that the output is little endian

v5:
Addressed comments by Russell King
* Simplify assembly code
* Jump to code rather than an address <- bug fix
* Use (void __iomem *) as appropriate
Roll in mackerel support
* This was previously a separate patch, only because of the order
  in which this code was developed
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-25 15:06:52 +00:00
Russell King
31edf274f9 Merge branches 'ftrace', 'gic', 'io', 'kexec', 'mod', 'sa11x0', 'sh' and 'versatile' into devel 2011-01-05 18:08:10 +00:00
Kuninori Morimoto
9a4af112bd ARM: 6515/1: Add zboot support for SuperH Mobile ARM
When CONFIG_ZBOOT_ROM is selected, the resulting zImage file will be small
boot loader and may be burned to rom or flash.

This is the non-board-specific framework portion of this patch-set.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-05 08:40:17 +00:00
Dave Martin
26e5ca93dd ARM: 6503/1: Thumb-2: Restore sensible zImage header layout for CONFIG_THUMB2_KERNEL
The code which makes up the zImage header intends to leave a
32-byte gap followed by a branch to the real entry point, a magic
number, and a word containing the absolute entry point address.

This gets messed up with with CONFIG_THUMB2_KERNEL, because the
size of the initial padding NOPs changes.

Instead, the header can be made fully compatible by restoring it to
ARM.

In the Thumb-2 case, we can replace the initial NOPs with a
sequence which switches to Thumb and jumps to the real entry point.

As a consequence, the zImage entry point is now always ARM, so no
special magic is needed any more for the uImage rules in the
Thumb-2 case.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-11-30 13:44:26 +00:00
Dave Martin
bfa64c4ab1 ARM: 6502/1: Thumb-2: Fix CONFIG_THUMB2_KERNEL breakage in compressed/head.S
Some instruction operand combinations are used here which are nor
permitted in Thumb-2.

In particular, most uses of pc as an operand are disallowed in
Thumb-2, and deprecated in ARM from ARMv7 onwards.

The modified code introduced by this patch should be compatible
with all architecture versions >= v3, with or without
CONFIG_THUMB2_KERNEL.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-11-30 13:44:25 +00:00
Dave Martin
077248fcce ARM: 6499/1: Thumb-2: Correct data alignment for CONFIG_THUMB2_KERNEL in bootp/init.S
Directives such as .long and .word do not magically cause the
assembler location counter to become aligned in gas.  As a result,
using these directives in code sections can result in misaligned
data words when building a Thumb-2 kernel (CONFIG_THUMB2_KERNEL).

This is a Bad Thing, since the ABI permits the compiler to assume
that fundamental types of word size or above are word- aligned when
accessing them from C.  If the data is not really word-aligned,
this can cause impaired performance and stray alignment faults in
some circumstances.

In general, the following rules should be applied when using data
word declaration directives inside code sections:

    * .quad and .double:
         .align 3

    * .long, .word, .single, .float:
         .align (or .align 2)

    * .short:
        No explicit alignment required, since Thumb-2
        instructions are always 2 or 4 bytes in size.
        immediately after an instruction.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-11-30 13:44:24 +00:00
Russell King
b0c4d4ee4e ARM: avoid marking decompressor .stack section as having contents
The .stack section doesn't contain any contents, and doesn't require
initialization either.  Rather than marking the output section with
'NOLOAD' but still having it exist in the object files, mark it with
%nobits which avoids the assembler marking the section with 'CONTENTS'.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-11-22 12:00:59 +00:00
Russell King
d93c333dc8 ARM: Fix build error when using KCONFIG_CONFIG
Jonathan Cameron reports that when using the environment
variable KCONFIG_CONFIG, he encounters this error:

make[2]: *** No rule to make target `.config', needed by `arch/arm/boot/compressed/vmlinux.lds'

Reported-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-09-19 16:18:37 +01:00
Russell King
9e84ed63dc ARM: Partially revert "Auto calculate ZRELADDR and provide option for exceptions"
Partially revert e69edc7, which introduced automatic zreladdr
support.  The change in the way the manual definition is defined
seems to be error and conflict prone.  Go back to the original way
we were handling this for the time being, while keeping the automatic
zreladdr facility.

Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-09-09 22:39:41 +01:00
Russell King
0b019a4155 Merge branches 'master' and 'devel' into for-linus
Conflicts:
	arch/arm/Kconfig
	arch/arm/mm/Kconfig
2010-08-10 23:17:52 +01:00
Rabin Vincent
77754410fb ARM: 6286/1: fix Thumb-2 decompressor broken by "Auto calculate ZRELADDR"
"ARM: Auto calculate ZRELADDR and provide option for exceptions" broke
the Thumb-2 decompressor because it removed an entry in the LC0 table
but didn't adjust the offset the Thumb-2 code uses to load the SP from
that table.

Fix it, and also change the ARM code to use the separate SP-load since
ARM instructions that include the SP in the LDM register list are
deprecated.

Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-08-10 22:10:51 +01:00
Russell King
f165eb77f4 Merge branch 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel-stable
Conflicts:
	arch/arm/mach-pxa/palmt5.c
	arch/arm/mach-pxa/palmtreo.c
2010-08-06 18:10:25 +01:00
Eric Miao
9c3fca2ee6 [ARM] pxa: PXA_SHARPSL_DETECT_MACH_ID to include head-sharpsl.S
With kexec-based kernel boot loader on Zaurus, the machine ID is
actually correctly passed, and head-sharpsl.S is not necessary.
Introduce PXA_SHARPSL_DETECT_MACH_ID, and include head-sharpsl.S
only when that's explicitly enabled.

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-08-05 14:32:23 +08:00
Linus Torvalds
be82ae0238 Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (291 commits)
  ARM: AMBA: Add pclk support to AMBA bus infrastructure
  ARM: 6278/2: fix regression in RealView after the introduction of pclk
  ARM: 6277/1: mach-shmobile: Allow users to select HZ, default to 128
  ARM: 6276/1: mach-shmobile: remove duplicate NR_IRQS_LEGACY
  ARM: 6246/1: mmci: support larger MMCIDATALENGTH register
  ARM: 6245/1: mmci: enable hardware flow control on Ux500 variants
  ARM: 6244/1: mmci: add variant data and default MCICLOCK support
  ARM: 6243/1: mmci: pass power_mode to the translate_vdd callback
  ARM: 6274/1: add global control registers definition header file for nuc900
  mx2_camera: fix type of dma buffer virtual address pointer
  mx2_camera: Add soc_camera support for i.MX25/i.MX27
  arm/imx/gpio: add spinlock protection
  ARM: Add support for the LPC32XX arch
  ARM: LPC32XX: Arch config menu supoport and makefiles
  ARM: LPC32XX: Phytec 3250 platform support
  ARM: LPC32XX: Misc support functions
  ARM: LPC32XX: Serial support code
  ARM: LPC32XX: System suspend support
  ARM: LPC32XX: GPIO, timer, and IRQ drivers
  ARM: LPC32XX: Clock driver
  ...
2010-08-03 14:31:24 -07:00
Russell King
7b70c4275f Merge branch 'devel-stable' into devel
Conflicts:
	arch/arm/kernel/entry-armv.S
	arch/arm/kernel/setup.c
	arch/arm/mm/init.c
2010-07-31 14:20:16 +01:00
Magnus Damm
f1b957d3a0 ARM: 6270/1: clean files in arch/arm/boot/compressed/
Update the compressed boot Makefile for ARM to
remove files during clean.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-29 11:31:21 +01:00
Eric Miao
e69edc7939 ARM: Auto calculate ZRELADDR and provide option for exceptions
As long as the zImage is placed within the 128MB range from the start of
memory, ZRELADDR (Address where the decompressed kernel will be placed,
usually == PHYS_OFFSET + TEXT_OFFSET) can be determined at run-time by
masking PC with 0xf80000000.

Running through all the Makefile.boot, all those zreladdr-y
addresses == 0x[0-f][08]00_0000 + TEXT_OFFSET can be determined at
run-time.

Option CONFIG_AUTO_ZRELADDR and CONFIG_ZRELADDR are introduced,
CONFIG_ZRELADDR _must_ be explicitly specified if:

- ((zreladdr-y - TEXT_OFFSET) & ~0xf8000000) != 0, which means
  masking PC with 0xf8000000 will result in an incorrect address.
  Currently this is only a problem on u300.

- or the assumption of the zImage being loaded by the bootloader within
  the first 128MB of RAM is incorrect

- or when ZBOOT_ROM is used, where the above assumption is usually wrong.

[ukleinek: changed mask from 0xf0000000 to 0xf8000000 for mx1 and shark
+ some review fixes from the mailing list]

Original-Idea-and-Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Eric Miao <eric.miao@canonical.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-07-12 10:11:50 +02:00
Eric Miao
db7b2b4b0e ARM: Remove unused PARAMS_PHYS from arch/arm/boot/compressed
The only reference in arch/arm/boot/compressed to PARAMS_PHYS is
params() in head.S, which can be directly converted to the exact
address as specified by arch/arm/mach-rpc/Makefile.boot.

Signed-off-by: Eric Miao <eric.miao@canonical.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-07-07 16:38:37 +02:00
Uwe Kleine-König
8d68fe7029 ARM: zImage: don't define unused symbol initrd_phys
The only user of initrd_phys is arch/arm/boot/bootp/init.S which still
gets the value passed to.

Acked-by: Eric Miao <eric.miao@canonical.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-07-07 16:38:35 +02:00
Uwe Kleine-König
7179304bfc ARM: remove bit-rotten STANDALONE_DEBUG for decompressor
I tried to get this running to debug the regression introduced by
e7db7b4 without success.  But this has several problems that make it
hard to fix:

  - lib/decompress_inflate.c includes in-kernel headers that make
    it difficult to compile for user space.
  - the binary formats changed both in kernel and user space and
    at least for the kernel side there isn't only a single
    variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2010-07-07 16:38:16 +02:00
Russell King
c9c6fe5033 ARM: Remove support for LinkUp Systems L7200 SDP.
This hasn't been actively maintained for a long time, only receiving
the occasional build update when things break.  I doubt anyone has
one of these on their desks anymore.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-06-24 15:41:31 +01:00
Uwe Kleine-König
be6f9f006a ARM: zImage: annotate debug functions about corrupted registers
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-06-17 11:31:34 +02:00
Uwe Kleine-König
21b2841df1 ARM: zImage: fix comments for cache_on, cache_off and cache_clean_flush
This adds missing registers to the list of corrupted registers and
removes a wrong comment about r9 on entry

While at it the formatting of the comment to cache_off is changed to
resemble the other two.

Acked-by: Eric Miao <eric.miao@canonical.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-06-17 11:31:19 +02:00
Uwe Kleine-König
63fa71872b ARM: zImage: __armv3_mpu_cache_flush: respect should-be-zero specification
Probably the register content for cache operations is "don't care" in
practice, but as r1 is explicitly zeroed, use that one.

Acked-by: Eric Miao <eric.miao@canonical.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-06-17 11:10:03 +02:00
Uwe Kleine-König
4a8d57a54f ARM: zImage: some comments for __armv3_mpu_cache_on
__armv3_mpu_cache_on seems broken.  As there is noone around who knows
about these machines just keep the code as is but point out the strange
things.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-06-17 11:09:40 +02:00
Uwe Kleine-König
88237c25aa ARM: zImage: don't hard code the stack size twice
Acked-by: Eric Miao <eric.miao@canonical.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-06-17 11:02:55 +02:00
Andrea Gelmini
c145211d1f ARM: arch/arm/boot/bootp/bootp.lds: Checkpatch cleanup
arch/arm/boot/bootp/bootp.lds:22: ERROR: trailing whitespace

Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-05-24 20:40:09 +01:00
Russell King
ac1d426e82 Merge branch 'devel-stable' into devel
Conflicts:
	arch/arm/Kconfig
	arch/arm/include/asm/system.h
	arch/arm/mm/Kconfig
2010-05-17 17:24:04 +01:00
Haojian Zhuang
4157d317dc [ARM] pxa: update cpuid pattern for pxa9xx in head.S
Update CPUID pattern of PXA9xx in head.S and fix the duplicate
entries for pxa935.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-05-06 11:12:11 +08:00
Albin Tonnerre
6e8699f7d6 ARM: 6026/1: ARM: Add support for LZMA-compressed kernel images
This patch allows using a kernel image compressed with LZMA on ARM.
Extracting the image is fairly slow, but it might be useful on machines
with a very limited amount of storage, as the size benefit is quite
significant (about 25% smaller with LZMA compared to GZIP)

Tested-by: Martin Michlmayr <tbm@cyrius.com>
Tested-by: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-04-14 12:05:36 +01:00
Rabin Vincent
d4d9959c09 ARM: 6031/1: fix Thumb-2 decompressor
98e12b5a6e ("ARM: Fix decompressor's kernel size estimation for
ROM=y") broke the Thumb-2 decompressor because it added an entry in the
LC0 table but didn't adjust the offset the Thumb-2 code uses to load the
SP from that table.  Fix it.

Cc: stable <stable@kernel.org>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-04-07 21:11:29 +01:00
Sascha Hauer
75216859d9 ARM: 5990/1: ARM: use __armv5tej_mmu_cache_flush for V5TEJ instead of __armv4_mmu_cache_flush
This got broken with commit 0e056f20

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-15 14:32:02 +00:00
Russell King
b89ebadc34 ARM: Add final piece to fix XIP decompressor in read-only memory
This defines STATIC_RW_DATA, which prevents the read/write malloc
management data being declared with a static attribute.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-15 14:29:22 +00:00
Mark Brown
a2302b45d8 ARM: 5985/2: ARM: Fix Samsung build after "ARM: Eliminate decompressor -Dstatic= PIC hack"
Commit 5de813b6 (ARM: Eliminate decompressor -Dstatic= PIC hack) among
other things changed the declared type of the error() function to an
extern, conflicting with the forward declartion in the Samsung
plat/uncompress.h which appears to have been relying on the static
being defined away, causing build failures since error() ends up with
a GOT relocation but the linker script discards all GOT relocated
data and functions:

arch/arm/boot/compressed/decompress.o: In function `gunzip':
/home/broonie/git/linux-2.6/arch/arm/boot/compressed/../../../../lib/decompress_
+inflate.c:68: undefined reference to `error'

and so on. Fix this by moving the declaration into uncompress/misc.c
where it is shared with the rest of the code, correcting the definition
as we go.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-13 10:48:21 +00:00
Linus Torvalds
c32da02342 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (56 commits)
  doc: fix typo in comment explaining rb_tree usage
  Remove fs/ntfs/ChangeLog
  doc: fix console doc typo
  doc: cpuset: Update the cpuset flag file
  Fix of spelling in arch/sparc/kernel/leon_kernel.c no longer needed
  Remove drivers/parport/ChangeLog
  Remove drivers/char/ChangeLog
  doc: typo - Table 1-2 should refer to "status", not "statm"
  tree-wide: fix typos "ass?o[sc]iac?te" -> "associate" in comments
  No need to patch AMD-provided drivers/gpu/drm/radeon/atombios.h
  devres/irq: Fix devm_irq_match comment
  Remove reference to kthread_create_on_cpu
  tree-wide: Assorted spelling fixes
  tree-wide: fix 'lenght' typo in comments and code
  drm/kms: fix spelling in error message
  doc: capitalization and other minor fixes in pnp doc
  devres: typo fix s/dev/devm/
  Remove redundant trailing semicolons from macros
  fix typo "definetly" -> "definitely" in comment
  tree-wide: s/widht/width/g typo in comments
  ...

Fix trivial conflict in Documentation/laptops/00-INDEX
2010-03-12 16:04:50 -08:00
Russell King
91e013827c Merge branch 'master' into for-linus 2010-03-08 20:24:11 +00:00
Jiri Kosina
318ae2edc3 Merge branch 'for-next' into for-linus
Conflicts:
	Documentation/filesystems/proc.txt
	arch/arm/mach-u300/include/mach/debug-macro.S
	drivers/net/qlge/qlge_ethtool.c
	drivers/net/qlge/qlge_main.c
	drivers/net/typhoon.c
2010-03-08 16:55:37 +01:00
Russell King
98e12b5a6e ARM: Fix decompressor's kernel size estimation for ROM=y
Commit 2552fc2 changed the way the decompressor decides if it is safe
to decompress the kernel directly to its final location.  Unfortunately,
it took the top of the compressed data as being the stack pointer,
which it is for ROM=n cases.  However, for ROM=y, the stack pointer
is not relevant, and results in the wrong answer.

Fix this by explicitly storing the end of the biggybacked data in the
decompressor, and use that to calculate the compressed image size.

CC: <stable@kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-26 00:10:47 +00:00
Russell King
2741ecb4ce Merge branch 'misc2' into devel 2010-02-25 22:09:41 +00:00
Russell King
5de813b6cd ARM: Eliminate decompressor -Dstatic= PIC hack
We used to build decompressors with -Dstatic= to avoid any local data
being generated.  The problem is that local data generates GOTOFF
relocations, which means we can't relocate the data relative to the
text segment.

Global data, on the other hand, goes through the GOT, and can be
relocated anywhere.

Unfortunately, with the new decompressors, this presents a problem
since they declare static data within functions, and this leads to
stack overflow.

Fix this by separating out the decompressor code into a separate file,
and removing 'static' from BSS data in misc.c.

Also, discard the .data section - this means that should we end up
with read/write initialized data, the decompressor will fail to link
and the problem will be obvious.

Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-25 19:34:31 +00:00
Tony Lindgren
4e6d488af3 ARM: 5910/1: ARM: Add tmp register for addruart and loadsp
Otherwise more complicated uart configuration won't be possible.
We can use r1 for tmp register for both head.S and debug.S.

NOTE: This patch depends on another patch to add the the tmp register
into all debug-macro.S files. That can be done with:

$ sed -i -e "s/addruart,rx|addruart, rx/addruart, rx, tmp/"
	arch/arm/*/include/*/debug-macro.S

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-12 17:27:52 +00:00
Uwe Kleine-König
659431fcaf fix typos "precidence" -> "precedence" in comments
This patch was generated by

	git grep -E -i -l 'precidence' | xargs -r perl -p -i -e 's/precidence/precedence/'

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-02-05 12:22:39 +01:00
Tony Lindgren
200b7a8dc0 ARM: 5884/1: arm: Fix DCC console for v7
Without this patch arch/arm/compressed/head.S defaults to generic
DCC code that does not work for v7.

For more information on the v7 DCC, see Cortex-A8 TRM
"12.11.1 Debug communications channel".

To use it with post 2.6.33-rc1 or later, you need to have:

CONFIG_DEBUG_LL=y
ONFIG_DEBUG_ICEDCC=y
CONFIG_EARLY_PRINTK=y

Earlier kernels need commit 93fd03a8c6
backported.

Tested on omap3430.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-01-19 20:23:16 +00:00
Tony Lindgren
b53e9b5ebd ARM: 5882/1: ARM: Fix uncompress code compile for different defines of flush(void)
Because of the include of the decompress_inflate.c file from
boot/compress/misc.c, there are different flush() defines:

In file included from arch/arm/boot/compressed/misc.c:249:
arch/arm/boot/compressed/../../../../lib/decompress_inflate.c:138:29: error: macro "flush" passed 2 arguments, but takes just 0

Fix this by removing the define of flush() in misc.c for
CONFIG_DEBUG_ICEDCC as it's already defined in mach/uncompress.h,
and that is being included unconditionally.

Also use a static inline function instead of define
for mach-mxc and mach-gemini to avoid similar bug
for those platforms.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-01-18 12:44:51 +00:00
Albin Tonnerre
e7db7b4270 arm: add support for LZO-compressed kernels
- changes to ach/arch/boot/Makefile to make it easier to add new
   compression types
 - new piggy.lzo.S necessary for lzo compression
 - changes in arch/arm/boot/compressed/misc.c to allow the use of lzo or
   gzip, depending on the config
 - Kconfig support

Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Tested-by: Wu Zhangjin <wuzhangjin@gmail.com>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Russell King <rmk@arm.linux.org.uk>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-01-11 09:34:05 -08:00
Saeed Bishara
edabd38e1a ARM: add base support for Marvell Dove SoC
The Marvell Dove (88AP510) is a high-performance, highly integrated,
low power SoC with high-end ARM-compatible processor (known as PJ4),
graphics processing unit, high-definition video decoding acceleration
hardware, and a broad range of peripherals.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
2009-11-27 15:43:06 -05:00
Sam Ravnborg
caa27b66bd kbuild: use INSTALLKERNEL to select customized installkernel script
Replace the use of CROSS_COMPILE to select a customized
installkernel script with the possibility to set INSTALLKERNEL
to select a custom installkernel script when running make:

    make INSTALLKERNEL=arm-installkernel install

With this patch we are now more consistent across
different architectures - they did not all support use
of CROSS_COMPILE.

The use of CROSS_COMPILE was a hack as this really belongs
to gcc/binutils and the installkernel script does not change
just because we change toolchain.

The use of CROSS_COMPILE caused troubles with an upcoming patch
that saves CROSS_COMPILE when a kernel is built - it would no
longer be installable.
[Thanks to Peter Z. for this hint]

This patch undos what Ian did in commit:

  0f8e2d62fa
  ("use ${CROSS_COMPILE}installkernel in arch/*/boot/install.sh")

The patch has been lightly tested on x86 only - but all changes
looks obvious.

Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Mike Frysinger <vapier@gentoo.org> [blackfin]
Acked-by: Russell King <linux@arm.linux.org.uk> [arm]
Acked-by: Paul Mundt <lethal@linux-sh.org> [sh]
Acked-by: "H. Peter Anvin" <hpa@zytor.com> [x86]
Cc: Ian Campbell <icampbell@arcom.com>
Cc: Tony Luck <tony.luck@intel.com> [ia64]
Cc: Fenghua Yu <fenghua.yu@intel.com> [ia64]
Cc: Hirokazu Takata <takata@linux-m32r.org> [m32r]
Cc: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Cc: Kyle McMartin <kyle@mcmartin.ca> [parisc]
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> [powerpc]
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390]
Cc: Thomas Gleixner <tglx@linutronix.de> [x86]
Cc: Ingo Molnar <mingo@redhat.com> [x86]
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-09-20 12:18:14 +02:00
Nicolas Pitre
2f82af08fc Nicolas Pitre has a new email address
Due to problems at cam.org, my nico@cam.org email address is no longer
valid.  FRom now on, nico@fluxnic.net should be used instead.

Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-15 09:37:12 -07:00
Russell King
87d721ad7a Merge branch 'master' into devel 2009-09-12 12:04:37 +01:00
Jaswinder Singh Rajput
81566a060b ARM: includecheck fix: misc.c
fix the following 'make includecheck' warning:

  arch/arm/boot/compressed/misc.c: linux/compiler.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:07:00 +01:00