Commit Graph

36 Commits

Author SHA1 Message Date
Russell King 193c3cc125 [ARM] Fix timer damage from d3d74453c3
Move the xtime write mode seqlock into timer_tick(), so it only
surrounds the call to do_timer().

This avoids a deadlock in update_process_times() ...
hrtimer_get_softirq_time() which tries to get a read mode seqlock
on xtime, thereby preventing booting.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 10:17:12 +00:00
Russell King a53d6fb83e [ARM] realview: disable second GIC on RevB MPCore platforms
The second GIC asserts a permanent interrupt on Rev.B MPCore platforms.
Disable initialisation of this GIC to avoid unbootable systems.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-09-13 15:10:25 +01:00
Simon Arlott 6cbdc8c535 [ARM] spelling fixes
Spelling fixes in arch/arm/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-20 20:10:32 +01:00
Bernhard Walle b30fabadae Add IRQF_IRQPOLL flag on arm
Add IRQF_IRQPOLL for each timer interrupt.

Signed-off-by: Bernhard Walle <bwalle@suse.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:22 -07:00
Catalin Marinas 0e0ba76926 [ARM] 4201/1: SMP barriers pair needed for the secondary boot process
In some situations, the pen_release store in platform_secondary_init()
may stay forever in the write buffer while the CPU is waiting on the
boot_lock to be released in boot_secondary(). The primary CPU could
never see the pen_release update without the barriers.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-16 13:06:56 +00:00
Catalin Marinas 7770bddb27 [ARM] 4130/1: Add L220 support to RealView/EB
This patch enables the L220 on the RealView/EB MPCore platform.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-15 15:08:54 +00:00
Catalin Marinas 4b17244c13 [ARM] 4109/2: Add support for the RealView/EB MPCore revC platform
The kernel originally supported revB only. This patch enables revC by
default and adds a config option for building the kernel for the revB
platform. Since the SCU base address was hard-coded in the proc-v6.S
file (and only valid for RealView/EB revB), this patch also adds a
more generic support for defining the SCU information.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-15 14:56:32 +00:00
Catalin Marinas 3edf22ab34 [ARM] 4190/2: Add the secondary GIC support for the RealView/EB
MPCore platform

This patch adds the registration of the secondary GIC on the
baseboard, together with the IRQ chaining setup.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-15 14:51:21 +00:00
Catalin Marinas b3a1bde4db [ARM] 4108/2: Allow multiple GIC interrupt controllers in a system
The current implementation only assumes one GIC to be present in the
system. However, there are platforms with more than one cascaded interrupt
controllers (RealView/EB MPCore for example).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-15 14:44:10 +00:00
Russell King 6b65cd7428 i2c: New ARM Versatile/Realview bus driver
Add support for the I2C bus found on the ARM Versatile and Realview
platforms.  The I2C bus has a RTC and optionally some EEPROMs attached.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10 21:21:32 +01:00
Linus Torvalds 0cd61b68c3 Initial blind fixup for arm for irq changes
Untested, but this should fix up the bulk of the totally mechanical
issues, and should make the actual detail fixing easier.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-06 10:59:54 -07:00
Thomas Gleixner 52e405eaa9 [PATCH] ARM: fixup irqflags breakage after ARM genirq merge
The irgflags consolidation did conflict with the ARM to generic IRQ
conversion and was not applied for ARM. Fix it up.

Use the new IRQF_ constants and remove the SA_INTERRUPT define

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 17:29:22 -07:00
Jörn Engel 6ab3d5624e Remove obsolete #include <linux/config.h>
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30 19:25:36 +02:00
Harry Fearnhamm bb1a2aa617 [ARM] 3527/1: MPCore Boot Lockup Fix
Patch from Harry Fearnhamm

This patch fixes the occasional lockup seen in early boot stage
on RealView MPCore system.

Signed-off-by: Harry Fearnhamm <Harry.Fearnhamm@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-05-16 16:50:21 +01:00
Catalin Marinas 9e7714d080 [ARM] 3367/1: CLCD mode no longer supported on the RealView boards
Patch from Catalin Marinas

Chosing of the CLCD RGB mode is no longer possible via the SYS_CLCD
register on the RealView boards. Instead, this configuration is done in the
CLCD primecell control register directly.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-16 14:10:20 +00:00
Russell King 7bbb794031 [ARM] Fix SMP initialisation oops
A change to the SMP initialisation caused the following oops:

 CPU1: Booted secondary processor
 CPU1: D VIPT write-back cache
 CPU1: I cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets
 CPU1: D cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets
 <7>Calibrating delay loop... 83.14 BogoMIPS (lpj=415744)
 <1>Unable to handle kernel NULL pointer dereference at virtual address 0000001c
 ...
 PC is at enqueue_task+0x1c/0x64
 LR is at activate_task+0xcc/0xe4

SMP initialisation now requires cpu_possible_map to be initialised in
setup_arch().  Move this from smp_prepare_cpus() to smp_init_cpus()
and call it from our setup_arch() if CONFIG_SMP is enabled.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-16 11:08:09 +00:00
Catalin Marinas f557f5e51d [ARM] 3313/1: Use OSC4 instead of OSC1 for CLCD
Patch from Catalin Marinas

Because of a type, OSC1 was used for setting the display clock instead of
OSC4. This patch fixes it.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-08 21:19:39 +00:00
Russell King 5ff3fd2716 [ARM] Remove useless 'default n' from Kconfig files
The default is already 'n' so there's no need to explicitly state it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-13 21:09:17 +00:00
Nicolas Pitre 946d4935fc [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2)
Patch from Nicolas Pitre

This field is redundent since it must be equal to PHYS_OFFSET anyway.

Now that no code uses it anymore, mark it deprecated and remove all
initializations from the tree.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-13 20:51:52 +00:00
Arjan van de Ven 00431707be [ARM] Convert some arm semaphores to mutexes
The arm clock semaphores are strict mutexes, convert them to the new
mutex implementation

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-12 18:42:23 +00:00
Tim Schmielau de25968cc8 [PATCH] fix more missing includes
Include fixes for 2.6.14-git11.  Should allow to remove sched.h from
module.h on i386, x86_64, arm, ia64, ppc, ppc64, and s390.  Probably more
to come since I haven't yet checked the other archs.

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:13:45 -08:00
Russell King f8ce25476d [ARM] Move asm/hardware/clock.h to linux/clk.h
This is needs to be visible to other architectures using the AMBA
bus and peripherals.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-07 16:15:52 +00:00
Russell King a62c80e559 [ARM] Move AMBA include files to include/linux/amba/
Since the ARM AMBA bus is used on MIPS as well as ARM, we need
to make the bus available for other architectures to use.  Move
the AMBA include files from include/asm-arm/hardware/ to
include/linux/amba/

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-07 13:52:45 +00:00
Russell King a8d3584a2d [ARM] Remove clk_use()/clk_unuse()
It seems that clk_use() and clk_unuse() are additional complexity
which isn't required anymore.  Remove them from the clock framework
to avoid the additional confusion which they cause, and update all
ARM machine types except for OMAP.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-03 18:41:37 +00:00
Russell King 9f22090780 [ARM] Realview core.c does not need mach-types.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-25 15:57:21 +00:00
Russell King ce07d90aa8 [ARM] Fix arch-realview/system.h to use __io_address()
Move __io_address to arch-realview/hardware.h, drop core.h from platsmp.c
and localtimer.c, and include asm/io.h where required.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-16 14:38:19 +00:00
Russell King 97a63ecff4 [ARM SMP] Add CPU hotplug support for Realview MPcore
Add platform specific parts for hotplug CPU support for the
Realview board.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-09 13:50:57 +00:00
Russell King 2a98beb639 [ARM SMP] Add local timer support for Realview MPcore
Add platform specific parts for local timer support for the
Realview board.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-09 10:50:29 +00:00
Russell King 5d43045bcd [ARM SMP] Fix some sparse warnings in SMP code
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-08 10:44:46 +00:00
Russell King dbebb4cbe0 [ARM SMP] Add missing SMP timer handling for realview
Until we have local timer support, we need to broadcast the
timer interrupt to the other CPUs.  Also, add the missing
smp_send_timer() prototype to asm/smp.h

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-08 10:40:10 +00:00
Russell King 862184fe01 [ARM SMP] Add Realview MPcore SMP support
Add SMP support for the MPcore tile fitted to the Realview ARM
platform.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-07 21:05:42 +00:00
Russell King 9b1283bedd [ARM] Add support for Realview with MPcore tile
Add uniprocessor support for Realview platform fitted with the
MPcore (SMP) tile.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-07 21:01:06 +00:00
Russell King 01bbaf0b2b [ARM] realview core.h uses leds_event_t, so include asm/leds.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-07 10:30:16 +00:00
Russell King 1ffedce7e8 [ARM] Fix Realview machine for patch 3016/1
3016/1 changed the map_desc structure to take a PFN instead of a
physical address.  Fixup Realview machine support for this change.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-02 14:14:37 +00:00
Russell King 1be7228da2 [ARM] Fixup platform device.h includes for realview board
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-31 16:57:06 +00:00
Catalin Marinas 8ad68bbf7a [ARM] Add support for ARM RealView board
Support for RealView EB.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-31 14:25:02 +00:00