Commit Graph

11124 Commits

Author SHA1 Message Date
Aaro Koskinen
fbd208e977 arm: omap: sdram-nokia: prepare for new memory timings
Rename the current timings to indicate they're for 166 MHz. Based on
patches by Eduardo Valentin and Juha Keski-Saari.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Cc: Eduardo Valentin <eduardo.valentin@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-17 15:13:45 -08:00
Aaro Koskinen
fcd8d84633 arm: omap: add sdram-nokia.h
Add a header file for Nokia SDRAM functions. Based on patches by Juha
Keski-Saari.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-17 15:13:44 -08:00
Aaro Koskinen
6c3bc4eb56 arm: omap: rename board-rx51-sdram.c to sdram-nokia.c
Rename the file and functions so that it can be reused by future Nokia
boards. Based on patches by Juha Keski-Saari.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-17 15:13:44 -08:00
Linus Torvalds
ec5d043f28 Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  OMAP2: PRCM: fix some SHIFT macros that were actually bitmasks
  OMAP2+: PM/serial: fix console semaphore acquire during suspend
  OMAP1: SRAM: fix size for OMAP1611 SoCs
  arm: omap2: io: fix clk_get() error check
  arm: plat-omap: counter_32k: use IS_ERR() instead of NULL check
  omap: nand: remove hardware ECC as default
  omap: zoom: wl1271 slot is MMC_CAP_POWER_OFF_CARD
  omap: PM debug: fix wake-on-timer debugfs dependency
2010-12-14 17:36:35 -08:00
Valentine Barshak
85b093bcc5 ARM: 6535/1: V6 MPCore v6_dma_inv_range and v6_dma_flush_range RWFO fix
Cache ownership must be acquired by reading/writing data from the
cache line to make cache operation have the desired effect on the
SMP MPCore CPU. However, the ownership is never acquired in the
v6_dma_inv_range function when cleaning the first line and
flushing the last one, in case the address is not aligned
to D_CACHE_LINE_SIZE boundary.
Fix this by reading/writing data if needed, before performing
cache operations.
While at it, fix v6_dma_flush_range to prevent RWFO outside
the buffer.

Cc: stable@kernel.org
Signed-off-by: Valentine Barshak <vbarshak@mvista.com>
Signed-off-by: George G. Davis <gdavis@mvista.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-14 22:23:34 +00:00
Dave Martin
593c252a73 ARM: 6534/1: Make CONFIG_FPE_NWFPE depend on !CONFIG_THUMB2_KERNEL
Because the nwfpe support is unlikely to be used on new platforms
and requires CONFIG_OABI_COMPAT, which is not generally used with
ARMv7+, we shouldn't expect to build nwfpe support into a Thumb-2
kernel.

At present, nwfpe contains assembly code which isn't Thumb-2
compatible, and for now it doesn't appear useful to port this
code.

All ARMv7-A/R platforms necessarily have VFPv3 hardware floating-
point natively, making emulation unnecessary.

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>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-14 22:23:34 +00:00
Dave Martin
6e6fc998b8 ARM: 6533/1: Thumb-2: Make CONFIG_THUMB2_KERNEL depend on !CPU_V6
This makes sense, because Thumb-2 code can't execute on plain
ARMv6 processors.

This will avoid accidentally configuring a broken kernel where the
config otherwise would allow multiple architecture versions to
coexist in the same kernel.

Not adding !CPU_V5 etc., because the chance of anyone trying to
put v5 and v7 in the same kernel is low, and I'm not aware of
any mach which can do this.  These could be added later if it
matters.

Note that the rules may need to be refined if support for the
ARM1156J(F)-S processor is later added to the kernel, since this
processor supports the rare ARMv6T2 extensions, which add support
for Thumb-2 and a few other ARMv7 features.

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>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-14 22:23:33 +00:00
Russell King
819c1a651f Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 2010-12-12 23:45:39 +00:00
Russell King
440e2e4759 ARM: Update mach-types
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-12 23:31:02 +00:00
Catalin Marinas
da30e0ac0f ARM: 6528/1: Use CTR for the I-cache line size on ARMv7
The current implementation of the v7_coherent_*_range function assumes
that the D and I cache lines have the same size, which is incorrect
architecturally. This patch adds the icache_line_size macro which reads
the CTR register. The main loop in v7_coherent_*_range is split in two
independent loops or the D and I caches. This also has the performance
advantage that the DSB is moved outside the main loop.

Reported-by: Kevin Sapp <ksapp@quicinc.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-12 23:25:58 +00:00
Catalin Marinas
f91e2c3bd4 ARM: 6527/1: Use CTR instead of CCSIDR for the D-cache line size on ARMv7
The current implementation of the dcache_line_size macro reads the L1
cache size from the CCSIDR register. This, however, is not guaranteed to
be the smallest cache line in the cache hierarchy. The patch changes to
the macro to use the more architecturally correct CTR register.

Reported-by: Kevin Sapp <ksapp@quicinc.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-12 23:25:58 +00:00
Paul Walmsley
c2015dc88a OMAP2: PRCM: fix some SHIFT macros that were actually bitmasks
After Charu's GPIO hwmod patches, GPIO initialization on N800 emits
the following messages for all GPIO banks:

omap_hwmod: gpio1: cannot be enabled (3)

This is due to OMAP24XX_ST_GPIOS_SHIFT being defined as a bitmask.
Fix this and also fix two other macros that had the same problem.

Thanks to Tony Lindgren <tony@atomide.com> for originally reporting
this bug.

Signed-off-by: Paul Walmsley <paul@pwsan.com
Cc: Charulatha Varadarajan <charu@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-10 18:04:43 -08:00
Kevin Hilman
e83df17f17 OMAP2+: PM/serial: fix console semaphore acquire during suspend
commit 0d8e2d0dad (OMAP2+: PM/serial:
hold console semaphore while OMAP UARTs are disabled) added use of the
console semaphore to protect UARTs from being accessed after disabled
during idle, but this causes problems in suspend.

During suspend, the console semaphore is acquired by the console
suspend method (console_suspend()) so the try_acquire_console_sem()
will always fail and suspend will be aborted.

To fix, introduce a check so the console semaphore is only attempted
during idle, and not during suspend.  Also use the same check so that
the console semaphore is not prematurely released during resume.

Thanks to Paul Walmsley for suggesting adding the same check during
resume.

Cc: Paul Walmsley <paul@pwsan.com>
Tested-by: Jean Pihet <j-pihet@ti.com>
Tested-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-09 16:41:29 -08:00
Kevin Hilman
28dd31983f OMAP1: SRAM: fix size for OMAP1611 SoCs
Kernel was failing to boot on omap1611 based OSK boards due to
mis-configured SRAM size.  Existing code was using a hard-coded value
for 250k, which was then rounded down by PAGE_SIZE.  Increasing this to
256k allows kernel to boot on omap1611 SoCs.

Problem reported by and initial fix suggested by Tim Bird.

Thanks to Tony Lindgren for helping diagnose the problem to being
specific to OMAP1611 and not affecting OMAP1610/OMAP1623.

Reported-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-09 16:29:21 -08:00
Aaro Koskinen
e281f7ec95 arm: omap2: io: fix clk_get() error check
clk_get() return value should be checked with IS_ERR().

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-07 18:12:56 -08:00
Linus Torvalds
2cedcc4f12 Merge branch 'fixes/2637-rc5/s3c24xx' of git://git.fluff.org/bjdooks/linux
* 'fixes/2637-rc5/s3c24xx' of git://git.fluff.org/bjdooks/linux:
  ARM: S3C24XX: Fix mess with gpio {set,get}_pull callbacks
  ARM: mini2440: Fix Kconfig to allow kernel to build
  ARM: S3C2412: Fix typo in CONFIG_CPU_S3C2412_ONLY definition
  ARM: S3C2443: Select properly ARM core type
  ARM: SMDK2416: Select MACH_SMDK, S3C_DEV_NAND, S3C_DEV_USB_HOST
2010-12-07 17:13:50 -08:00
Vasily Khoruzhick
812c4e40c2 ARM: S3C24XX: Fix mess with gpio {set,get}_pull callbacks
Currently the {set,get}_pull callbacks of the s3c24xx_gpiocfg_default structure
are initalized via s3c_gpio_{get,set}pull_1up. This results in a linker
error when only CONFIG_CPU_S3C2442 is selected:

arch/arm/plat-s3c24xx/built-in.o:(.data+0x13f4): undefined reference to
`s3c_gpio_getpull_1up'
arch/arm/plat-s3c24xx/built-in.o:(.data+0x13f8): undefined reference to
`s3c_gpio_setpull_1up'

The s3c2442 has pulldowns instead of pullups compared to the s3c2440.
The method of controlling them is the same though.
So this patch modifies the existing s3c_gpio_{get,set}pull_1up helper functions
to take an additional parameter deciding whether the pin has a pullup or pulldown.
The s3c_gpio_{get,set}pull_1{down,up} functions then wrap that functions passing
either S3C_GPIO_PULL_UP or S3C_GPIO_PULL_DOWN.

Furthermore this patch sets up the s3c24xx_gpiocfg_default.{get,set}_pull fields
in the s3c244{0,2}_map_io function to the new pulldown helper functions.

Based on patch from "Lars-Peter Clausen" <lars@metafoo.de>

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-12-08 01:04:56 +00:00
Olof Johansson
da8f2e2461 ARM: tegra: fix regression from addruart rewrite
Commit 0ea1293009 ("arm: return both physical and virtual addresses
from addruart") took out the test for MMU on/off but didn't switch the
ldr instructions to no longer be conditionals based on said test.

Fix that.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Colin Cross <ccross@android.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-06 20:07:57 -08:00
Vasiliy Kulikov
cb9675f328 arm: plat-omap: counter_32k: use IS_ERR() instead of NULL check
clk_get() returns ERR_PTR() on error, not NULL.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
[tony@atomide.com: updated to include err.h to compile on omap1]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-06 16:00:16 -08:00
Ohad Ben-Cohen
f811036476 omap: zoom: wl1271 slot is MMC_CAP_POWER_OFF_CARD
This patch complements ed919b0 "mmc: sdio: fix runtime PM anomalies by
introducing MMC_CAP_POWER_OFF_CARD" by declaring MMC_CAP_POWER_OFF_CARD
on the ZOOM's wl1271 mmc slot.

This is required in order not to break runtime PM support for the wl1271
sdio driver.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-06 15:59:54 -08:00
Linus Torvalds
60658f8a29 Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: 6524/1: GIC irq desciptor bug fix
  ARM: 6523/1: iop: ensure sched_clock() is notrace
  ARM: 6456/1: Fix for building DEBUG with sa11xx_base.c as a module.
  ARM: 6519/1: kuser: Fix incorrect cmpxchg syscall in kuser helpers
  ARM: 6505/1: kprobes: Don't HAVE_KPROBES when CONFIG_THUMB2_KERNEL is selected
  ARM: 6508/1: vexpress: Correct data alignment in headsmp.S for CONFIG_THUMB2_KERNEL
  ARM: 6507/1: RealView: Correct data alignment in headsmp.S for CONFIG_THUMB2_KERNEL
  ARM: 6504/1: Thumb-2: Fix long-distance conditional branches in head.S for Thumb-2.
  ARM: 6503/1: Thumb-2: Restore sensible zImage header layout for CONFIG_THUMB2_KERNEL
  ARM: 6502/1: Thumb-2: Fix CONFIG_THUMB2_KERNEL breakage in compressed/head.S
  ARM: 6501/1: Thumb-2: Correct data alignment for CONFIG_THUMB2_KERNEL in mm/proc-v7.S
  ARM: 6500/1: Thumb-2: Correct data alignment for CONFIG_THUMB2_KERNEL in kernel/head.S
  ARM: 6499/1: Thumb-2: Correct data alignment for CONFIG_THUMB2_KERNEL in bootp/init.S
  ARM: 6498/1: vfp: Correct data alignment for CONFIG_THUMB2_KERNEL
  ARM: 6497/1: kexec: Correct data alignment for CONFIG_THUMB2_KERNEL
  ARM: 6496/1: GIC: Do not try to register more then NR_IRQS interrupts
  ARM: cns3xxx: Fix build with CONFIG_PCI=y
2010-12-06 14:49:51 -08:00
Russell King
f444a57ca1 Merge branch 'for-rmk-fixes' of git://git.infradead.org/users/cbou/linux-cns3xxx 2010-12-06 15:39:23 +00:00
Chao Xie
87507500b7 ARM: 6524/1: GIC irq desciptor bug fix
gic_set_cpu will directly use irq_desc[]. If CONFIG_SPARSE_IRQ is
enabled, there is no irq_desc[]. So we need use irq_to_desc(irq) to
get the descriptor for irq.

Signed-off-by: Chao Xie <chao.xie@marvell.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-06 11:03:31 +00:00
Rabin Vincent
a5542a0f9a ARM: 6523/1: iop: ensure sched_clock() is notrace
Include sched.h to ensure sched_clock() has the notrace
annotation, and mark any functions it calls as notrace
too.
Include sched.h to ensure sched_clock() has the notrace
annotation, and mark any functions it calls as notrace
too.

Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-04 13:36:29 +00:00
Dave Martin
55afd264cd ARM: 6519/1: kuser: Fix incorrect cmpxchg syscall in kuser helpers
The existing code invokes the syscall with rubbish in r7,
due to what looks like an incorrect literal load idiom.

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>
2010-12-04 11:01:12 +00:00
Ben Dooks
2e18edf75d ARM: mini2440: Fix Kconfig to allow kernel to build
The MACH_MINI2440 entry requires the backlight LED driver, but this
subsystem has not been enabled and the select of LEDS_TRIGGER_BACKLIGHT
alone is insufficient to enable the necessary bits of the LED driver.

Add NEW_LEDS, LEDS_CLASS and LEDS_TRIGGER to the select to allow the
kernel to link.

This fixes the following error:

drivers/built-in.o: In function `led_trigger_set':
/home/ben/linux.git/drivers/leds/led-triggers.c:116: undefined reference to `led_brightness_set'

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-12-03 18:14:11 +00:00
Kevin Hilman
9f5ead76d4 omap: PM debug: fix wake-on-timer debugfs dependency
Wakeup-on-timer code does not have/need debugfs dependency.  Move
the function out of debugfs ifdef.

Fixes compile error when CONFIG_DEBUG_FS is disabled but PM debug is
enabled.

Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-02 17:08:48 -08:00
Jean-Christophe PLAGNIOL-VILLARD
3b24f0950b at91/board-yl-9200: fix typo in video support
for the epson frambuffer support it's CONFIG_FB_S1D13XXX
not CONFIG_FB_S1D135XX

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2010-11-30 17:23:41 +01:00
Jean-Christophe PLAGNIOL-VILLARD
82d5b5c8da at91/picotux200: remove commenting usb device and dataflash support
as based on http://www.picotux.com/pt200/picotux200.pdf
these board does not have such I/O

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2010-11-30 17:23:02 +01:00
Jean-Christophe PLAGNIOL-VILLARD
985f554d8f at91: rename rm9200ek and rm9200dk board file name
to be a few more concistant with the other boards

as ek is for evaluation kit and dk for development kit

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Andrew Victor <linux@maxim.org.za>
2010-11-30 17:22:20 +01:00
Jean-Christophe PLAGNIOL-VILLARD
55d83b0a6e at91rm9200ek: fix warning: 'ek_mmc_data' defined but not used
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Andrew Victor <linux@maxim.org.za>
2010-11-30 17:22:07 +01:00
Jean-Christophe PLAGNIOL-VILLARD
8e79d2d4e7 at91rm9200dk: fix warning: 'dk_mmc_data' defined but not used
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Andrew Victor <linux@maxim.org.za>
2010-11-30 17:21:55 +01:00
Jean-Christophe PLAGNIOL-VILLARD
8ae8cd978b at91: Convert remaining boards to new-style UART initialization
Convert the following AT91RM9200-based boards to the new-style UART
initialization:
  - Ajeco 1ARM Single Board Computer
  - Sperry-Sun KAFA board
  - picotux 200

Remove the deprecated at91_init_serial

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Andrew Victor <linux@maxim.org.za>
2010-11-30 17:21:29 +01:00
Dave Martin
ed7c84d548 ARM: 6505/1: kprobes: Don't HAVE_KPROBES when CONFIG_THUMB2_KERNEL is selected
Currently, the kprobes implementation for ARM only supports the ARM
instruction set, so it only works if CONFIG_THUMB2_KERNEL is not
enabled.

Until kprobes is updated to work with Thumb-2, turning it on will
cause horrible things to happen, so this patch disables it for now.

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>
2010-11-30 13:44:28 +00:00
Dave Martin
618d9c8f9e ARM: 6508/1: vexpress: Correct data alignment in headsmp.S for CONFIG_THUMB2_KERNEL
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 13:44:27 +00:00
Dave Martin
725ca4adae ARM: 6507/1: RealView: Correct data alignment in headsmp.S for CONFIG_THUMB2_KERNEL
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 13:44:27 +00:00
Dave Martin
a75e5248c5 ARM: 6504/1: Thumb-2: Fix long-distance conditional branches in head.S for Thumb-2.
The 32-bit conditional branches in Thumb-2 have a shorter range
(+/-512K) than their ARM counterparts (+/-32MB).  The linker does
not currently generate trampolines to extend the range of these
Thumb-2 conditional branches, resulting in link errors when vmlinux
is sufficiently large, e.g.:

head.o:(.text+0x464): relocation truncated to fit: R_ARM_THM_JUMP19

This patch forces the longer-range, unconditional branch encoding
by use of an explicit IT instruction.  The resulting branches are
triggered on the same conditions as before.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-11-30 13:44:26 +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
6323875db2 ARM: 6501/1: Thumb-2: Correct data alignment for CONFIG_THUMB2_KERNEL in mm/proc-v7.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.

In this specific case, we can achieve the desired alignment by
forcing a 32-bit branch instruction using the W() macro, since the
assembler location counter is already 32-bit aligned in this case.

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 13:44:25 +00:00
Dave Martin
4f79a5dd7c ARM: 6500/1: Thumb-2: Correct data alignment for CONFIG_THUMB2_KERNEL in kernel/head.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
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
Dave Martin
7eb25ebee8 ARM: 6498/1: vfp: Correct data alignment for CONFIG_THUMB2_KERNEL
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 13:44:23 +00:00
Dave Martin
bc8b57f08c ARM: 6497/1: kexec: Correct data alignment for CONFIG_THUMB2_KERNEL
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 13:44:23 +00:00
Pawel Moll
e6afec9b68 ARM: 6496/1: GIC: Do not try to register more then NR_IRQS interrupts
This change limits number of GIC-originating interrupts to the
platform maximum (defined by NR_IRQS) while still initialising
all distributor registers.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-11-30 13:38:57 +00:00
Marek Vasut
9f1ee150fc ARM: pxa/palm: fix ifdef around gen_nand driver registration
Reported-by: Rafael Gandolfi <kaillasse91@hotmail.fr>
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-11-30 20:14:05 +08:00
Jason Chagas
1db550118c ARM: mmp2: remove not used clk_rtc
RTC clock will remain at 32KHz and powered on, there is no need for it
at this moment.

Signed-off-by: Jason Chagas <jason.chagas@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-11-30 20:14:03 +08:00
Eric Benard
b94ca0792d at91: merge all at91rm9200 defconfig in one single file
About all options present in each file are activated
in the single file.

Signed-off-by: Eric Benard <eric@eukrea.com>
Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2010-11-30 10:59:15 +01:00
Yauhen Kharuzhy
4acf89fb3b ARM: S3C2412: Fix typo in CONFIG_CPU_S3C2412_ONLY definition
Dependency on (CPU_S3C2416 is not selected) was defined as "!CPU_2416",
instead of "!CPU_S3C2416". Fix it.

Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-11-30 08:49:11 +00:00
Yauhen Kharuzhy
71f608ef56 ARM: S3C2443: Select properly ARM core type
Select ARM920T core when compiling kernel for s3c2443.

Signed-off-by: Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-11-30 08:44:09 +00:00