Commit Graph

144 Commits

Author SHA1 Message Date
Michal Simek bfc32ad09b microblaze: Don't be noisy when userspace causes hardware exceptions
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-09-22 10:00:43 +02:00
John Williams 71b23d547b microblaze: Clear sticky FSR register after generating exception signals
FSR is sticky, so after the userspace exception/signal generation, clear
it ready for next time.

Signed-off-by: John Williams <john.williams@petalogix.com>
2009-09-22 10:00:42 +02:00
John Williams 866d72295d microblaze: Ensure CPU usermode is set on new userspace processes
Signed-off-by: John Williams <john.williams@petalogix.com>
2009-09-22 10:00:41 +02:00
Michal Simek ac854ff1fc microblaze: Save and restore msr in hw exception
I thought that this part of code could be removed because just
save and restore MSR but any code can't change it. But seems to
that any part of code works with this information.

This patch solved problem with allocation.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-09-22 08:50:15 +02:00
Michal Simek 9002062ff5 microblaze: Improve checking mechanism for MSR instruction
It is more safe to use clear instead of msrset.
We save some instructions too.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-09-21 14:29:21 +02:00
Michal Simek 2622434ee0 microblaze: Add checking mechanism for MSR instruction
It was necessary to use fourth parameter(r8) in early_printk
to show messages on console.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-09-21 14:29:21 +02:00
Tim Abbott 8cc11f5ab5 microblaze: Cleanup linker script using new linker script macros.
I wasn't able to further clean up the linker script using the
INIT_DATA_SECTION macro because of the FIXME comment for the
.init.ramfs section; when that is resolved we should convert
microblaze to use INIT_DATA_SECTION.

Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: microblaze-uclinux@itee.uq.edu.au
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-09-21 14:29:21 +02:00
Ingo Molnar cdd6c482c9 perf: Do the big rename: Performance Counters -> Performance Events
Bye-bye Performance Counters, welcome Performance Events!

In the past few months the perfcounters subsystem has grown out its
initial role of counting hardware events, and has become (and is
becoming) a much broader generic event enumeration, reporting, logging,
monitoring, analysis facility.

Naming its core object 'perf_counter' and naming the subsystem
'perfcounters' has become more and more of a misnomer. With pending
code like hw-breakpoints support the 'counter' name is less and
less appropriate.

All in one, we've decided to rename the subsystem to 'performance
events' and to propagate this rename through all fields, variables
and API names. (in an ABI compatible fashion)

The word 'event' is also a bit shorter than 'counter' - which makes
it slightly more convenient to write/handle as well.

Thanks goes to Stephane Eranian who first observed this misnomer and
suggested a rename.

User-space tooling and ABI compatibility is not affected - this patch
should be function-invariant. (Also, defconfigs were not touched to
keep the size down.)

This patch has been generated via the following script:

  FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')

  sed -i \
    -e 's/PERF_EVENT_/PERF_RECORD_/g' \
    -e 's/PERF_COUNTER/PERF_EVENT/g' \
    -e 's/perf_counter/perf_event/g' \
    -e 's/nb_counters/nb_events/g' \
    -e 's/swcounter/swevent/g' \
    -e 's/tpcounter_event/tp_event/g' \
    $FILES

  for N in $(find . -name perf_counter.[ch]); do
    M=$(echo $N | sed 's/perf_counter/perf_event/g')
    mv $N $M
  done

  FILES=$(find . -name perf_event.*)

  sed -i \
    -e 's/COUNTER_MASK/REG_MASK/g' \
    -e 's/COUNTER/EVENT/g' \
    -e 's/\<event\>/event_id/g' \
    -e 's/counter/event/g' \
    -e 's/Counter/Event/g' \
    $FILES

... to keep it as correct as possible. This script can also be
used by anyone who has pending perfcounters patches - it converts
a Linux kernel tree over to the new naming. We tried to time this
change to the point in time where the amount of pending patches
is the smallest: the end of the merge window.

Namespace clashes were fixed up in a preparatory patch - and some
stylistic fallout will be fixed up in a subsequent patch.

( NOTE: 'counters' are still the proper terminology when we deal
  with hardware registers - and these sed scripts are a bit
  over-eager in renaming them. I've undone some of that, but
  in case there's something left where 'counter' would be
  better than 'event' we can undo that on an individual basis
  instead of touching an otherwise nicely automated patch. )

Suggested-by: Stephane Eranian <eranian@google.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Paul Mackerras <paulus@samba.org>
Reviewed-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <linux-arch@vger.kernel.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-21 14:28:04 +02:00
Joe Perches d200c922bc Use new __init_task_data macro in arch init_task.c files.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-09-21 06:27:08 +02:00
Linus Torvalds ada3fa1505 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (46 commits)
  powerpc64: convert to dynamic percpu allocator
  sparc64: use embedding percpu first chunk allocator
  percpu: kill lpage first chunk allocator
  x86,percpu: use embedding for 64bit NUMA and page for 32bit NUMA
  percpu: update embedding first chunk allocator to handle sparse units
  percpu: use group information to allocate vmap areas sparsely
  vmalloc: implement pcpu_get_vm_areas()
  vmalloc: separate out insert_vmalloc_vm()
  percpu: add chunk->base_addr
  percpu: add pcpu_unit_offsets[]
  percpu: introduce pcpu_alloc_info and pcpu_group_info
  percpu: move pcpu_lpage_build_unit_map() and pcpul_lpage_dump_cfg() upward
  percpu: add @align to pcpu_fc_alloc_fn_t
  percpu: make @dyn_size mandatory for pcpu_setup_first_chunk()
  percpu: drop @static_size from first chunk allocators
  percpu: generalize first chunk allocator selection
  percpu: build first chunk allocators selectively
  percpu: rename 4k first chunk allocator to page
  percpu: improve boot messages
  percpu: fix pcpu_reclaim() locking
  ...

Fix trivial conflict as by Tejun Heo in kernel/sched.c
2009-09-15 09:39:44 -07:00
Michal Simek 2856ed35ea microblaze: Enable ppoll syscall
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-08-18 10:33:31 +02:00
John Williams 892ee92b81 microblaze: Sane handling of missing timer/intc in device tree
This code path doesn't test any returned pointers for NULL, leading to a bad
kernel page fault if there's no timer/intc found.

Slightly better is to BUG(), but even better still would be a printk beforehand.

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-08-18 10:33:30 +02:00
Christoph Hellwig 6b99ecec25 microblaze: use the generic ack_bad_irq implementation
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-08-18 10:33:29 +02:00
Tejun Heo 384be2b18a Merge branch 'percpu-for-linus' into percpu-for-next
Conflicts:
	arch/sparc/kernel/smp_64.c
	arch/x86/kernel/cpu/perf_counter.c
	arch/x86/kernel/setup_percpu.c
	drivers/cpufreq/cpufreq_ondemand.c
	mm/percpu.c

Conflicts in core and arch percpu codes are mostly from commit
ed78e1e078dd44249f88b1dd8c76dafb39567161 which substituted many
num_possible_cpus() with nr_cpu_ids.  As for-next branch has moved all
the first chunk allocators into mm/percpu.c, the changes are moved
from arch code to mm/percpu.c.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-08-14 14:45:31 +09:00
Sam Ravnborg 950b260ed2 microblaze: Makefile cleanup
Reviewed the Makefile on request by Michal and this is the resulting changes.

o Use ':=' for assignmnet so we do not re-evaluate for each use
o Use $(shell echo xxx) to remove ""
o Replaced CFLAGS_KERNEL with KBUILD_CFLAGS
  The settings are equally relevant for modules and the linked kernel
o Dropped LDFLAGS_BLOB - it is no longer used
o Refactored assignmnets to libs-y and core-y
o Use MMU for the MMU specific extension. "MMUEXT" was hurting my eyes
  and I did not wanted it spread to m68k

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 09:03:20 +02:00
Michal Simek 65d3db0601 microblaze: Typo fix for cpu param inconsistency
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 09:03:19 +02:00
Michal Simek 679711b82f microblaze: Add support for R_MICROBLAZE_64_NONE
For example reiserfs use this relocation type.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 09:03:18 +02:00
John Williams fadf2e60a6 microblaze: Get module loading working
New reloc type R_MICROBLAZE_32_PCREL_LO requires a null handler (no work to do).

Remove legacy hack for broken linker pre gcc-4.1.1, that required us to extract
an offset from the code, add it to the addend, then rewrite the instruction.

Fixup the invalid reloc type error output.

Boot tested with the xilinx_emaclite ethernet driver.

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 09:03:17 +02:00
Arnd Bergmann bfc0ca0d33 microblaze: remove sys_ipc
The ipc system call is now unused in microblaze,
as the system call table points directly to the
indidual system calls for IPC.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 09:03:16 +02:00
Michal Simek 3863dbceac microblaze: Support unaligned address for put/get_user macros
This patch add support for cases where load/store instruction
in put/get_user macro gets unaligned pointer to data and this
address is not valid. I prevent all cases which can failed.
I had to disable first stage of unaligned handler which is used
only for noMMU kernel and the whole work is done when interrupt
is enabled.
You have enable HW support for detect unaligned access in Microblaze.

This patch fixed three LTP tests:
getpeername01, getsockname01, socketpair01

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 09:03:15 +02:00
Michal Simek 94ad8eb854 microblaze: Detect new Microblaze 7.20 versions
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:55 +02:00
Michal Simek ea3fd1466f microblaze: Clear print messages for DTB passing via r7
It is necessary to zeroed r7 when r7 points to bad
dtb - this caused that we have correct messages
about compiled-in dtb or passing via r7

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:54 +02:00
Michal Simek a69cb8c466 microblaze: Not to clear r7 after copying DTB to kernel
I can't clear r7 because if I do it I lose information
where DTB come from.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:54 +02:00
Michal Simek 74510f2a27 microblaze: Add messages about FDT blob
Print accurate message about place where FDT blob is.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:53 +02:00
John Williams 909964ec89 microblaze: Final support for statically linked DTB
If r7 is zero at kernel boot, or does not point to a valid DTB, then
we fall back to a DTB (assumed to be) linked statically in the kernel, instead
of blindly copying bogus cruft into the kernel DTB memory region

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:53 +02:00
Alexey Dobriyan 405f55712d headers: smp_lock.h redux
* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
  It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT

  This will make hardirq.h inclusion cheaper for every PREEMPT=n config
  (which includes allmodconfig/allyesconfig, BTW)

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-12 12:22:34 -07:00
Tejun Heo 023bf6f1b8 linker script: unify usage of discard definition
Discarded sections in different archs share some commonality but have
considerable differences.  This led to linker script for each arch
implementing its own /DISCARD/ definition, which makes maintaining
tedious and adding new entries error-prone.

This patch makes all linker scripts to move discard definitions to the
end of the linker script and use the common DISCARDS macro.  As ld
uses the first matching section definition, archs can include default
discarded sections by including them earlier in the linker script.

ia64 is notable because it first throws away some ia64 specific
subsections and then include the rest of the sections into the final
image, so those sections must be discarded before the inclusion.

defconfig compile tested for x86, x86-64, powerpc, powerpc64, ia64,
alpha, sparc, sparc64 and s390.  Michal Simek tested microblaze.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Tested-by: Michal Simek <monstr@monstr.eu>
Cc: linux-arch@vger.kernel.org
Cc: Michal Simek <monstr@monstr.eu>
Cc: microblaze-uclinux@itee.uq.edu.au
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Tony Luck <tony.luck@intel.com>
2009-07-09 11:27:40 +09:00
Michal Simek 1dcdd0911b microblaze: include EXIT_TEXT to _stext
Microblaze wants to throw out EXIT_TEXT during runtime too.  This
hasn't caused trouble till now because the linker script didn't
discard EXIT_TEXT and it ended up in its default output section.  As
discard definition is about to be unified, include EXIT_TEXT into
_stext explicitly and while at it replace explicit exitcall definition
to EXIT_CALL.

Signed-off-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Tejun Heo <tj@kernel.org>
2009-07-09 11:27:40 +09:00
Michal Simek 4ae7833815 microblaze: Wire up new syscalls
Wire up new syscalls rt_tgsigqueueinfo and perf_counter_open.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-06 10:27:01 +02:00
Arnd Bergmann e513588f75 microblaze: use generic syscalls.h
The prototypes in syscalls.h all make sense for
microblaze, but for some of them, the actual implementation
in sys_microblaze.c needs to be adapted.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-06 10:26:59 +02:00
Arnd Bergmann 3183e06863 microblaze: clean up signal handling
When legacy signal handling is disabled, the
arch/microblaze/kernel/signal.c implementation can
be much simpler, as most of it is handled generically
from kernel/signal.c.

This is also a prerequisite for using the generic
asm/unistd.h, which does not provide __NR_sigreturn,
because this macro is referenced by the current signal.c
implementation.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-06 10:26:57 +02:00
Tejun Heo 405d967dc7 linker script: throw away .discard section
x86 throws away .discard section but no other archs do.  Also,
.discard is not thrown away while linking modules.  Make every arch
and module linking throw it away.  This will be used to define dummy
variables for percpu declarations and definitions.

This patch is based on Ivan Kokshaysky's alpha percpu patch.

[ Impact: always throw away everything in .discard ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Bryan Wu <cooloney@kernel.org>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@elte.hu>
2009-06-24 15:13:38 +09:00
Michal Simek 05bf7d4631 microblaze: Add missing symbols for CONSTRUCTORS support
Commit b99b87f70c add CONSTRUCTOR
support to Linux but Microblaze not defined KERNEL_CTORS symbols
which are used with that patch.
This patch fixed it.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-06-20 14:36:58 +02:00
Arnd Bergmann 20f54c490c microblaze: remove init_mm
Alexey removed the definition for init_mm from all architectures
but forgot microblaze, which was only recently added.
This fixes the microblaze build by dropping it there as well.

Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-06-20 14:36:50 +02:00
Michal Simek fee3c55d7f microblaze: Fix problem with early_printk in startup
Problem arise when is incopatibility between kernel/dts/pvr
and kernel tries to announce it. Early printk device
(uartlite in our case) was in TLB 2 and when kernel
extract DTB it necessary to allocate at least one
TLB at the end of memory. First free TLB was number two
where was early printk. But checking mechanism (kernel/dts/pvr)
was after extrahing but TLB 2 was different. This caused
that kernel hung up.
Moving early printk device to TLB 63 solve it and we don't
protect it which means that we can use early_printk messages
only for initial parts of kernel then we rewrite TLB 63.

Reported-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-30 16:40:58 +02:00
Michal Simek 4b2368ffd6 microblaze_mmu_v2: Makefiles
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:24 +02:00
Michal Simek 8b28626a6b microblaze_mmu_v2: Update signal returning address
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:22 +02:00
Michal Simek 17f3324c3e microblaze_mmu_v2: Traps MMU update
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:21 +02:00
Michal Simek 65504a47e0 microblaze_mmu_v2: Enable fork syscall for MMU and add fork as vfork for noMMU
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:21 +02:00
Michal Simek d4c1285ef0 microblaze_mmu_v2: Update linker script for MMU
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:20 +02:00
Michal Simek 4bb73c3de7 microblaze_mmu_v2: Add MMU related exceptions handling
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:20 +02:00
Michal Simek 7db29dde73 microblaze_mmu_v2: Update exception handling - MMU exception
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:20 +02:00
Michal Simek ca54502bd5 microblaze_mmu_v2: entry.S, entry.h
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:20 +02:00
Michal Simek 627cef44f4 microblaze_mmu_v2: MMU asm offset update
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:19 +02:00
Michal Simek 5233806dfe microblaze_mmu_v2: Update process creation for MMU
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:18 +02:00
Michal Simek 3f50425c0c microblaze_mmu_v2: TLB low level code
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:14 +02:00
Michal Simek a43acfbbc8 microblaze_mmu_v2: Alocate TLB for early console
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:14 +02:00
Michal Simek 5846cc608f microblaze_mmu_v2: MMU update for startup code
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:14 +02:00
Michal Simek b9479e6665 microblaze: Fix cast warning for __va in prom.c
__va expect 32bit value but of_read_ulong(of_read_number)
returns 64bit value

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-21 16:39:58 +02:00
Michal Simek cda1fd5a60 microblaze: Cleanup compiled-in rootfs in BSS section
This patch is based on patch from Steve Magnani.

There were bug for compiled-in rootfs. We have to move
moving rootfs which is in BSS section to _ebss section
which is at the end of kernel and then clear bss section
not vice-versa.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-21 16:39:16 +02:00
Michal Simek 1dff89a9c7 microblaze: Fix early cmdline for CMDLINE_FORCE
This patch fixed parsing early parameters because
current implementation does that early parse DTS
command line and then parse CMDLINE line which is compiled-in.

For case that DTS doesn't contain command line is
copied command line from kernel with is done in prom.c
that's why I can remove it from machine_early_init.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-21 16:39:05 +02:00
Michal Simek a6029d1c8c microblaze: prepare signal handling for generic unistd.h
We need to define set_restore_sigmask() in order to
get pselect and ppoll. Also, the setup_frame function
can not be used when __NR_sigreturn is not defined.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-21 15:56:07 +02:00
Arnd Bergmann 6b4374261a microblaze: add security initcalls
The security subsystem has its own initcalls, which
need support in vmlinux.lds.S.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-21 15:56:06 +02:00
Arnd Bergmann 70f4cc2935 microblaze: kill incorrect __bad_xchg definition
The whole point of the __bad_xchg declaration in
system.h is to give a linker error when a variable
of invalid size is passed to __xchg. The out
of line definition in traps.c defeats this purpose
and does not any value, so remove it here.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-21 15:56:05 +02:00
Arnd Bergmann 353b431baf microblaze: fix __user annotations
The microblaze signal handling code gets some __user
pointers wrong, as shown by sparse.
This adds the annotations where appropriate and
change sys_rt_sigreturn to correctly pass a user
stack down to do_sigaltstack instead of a kernel
structure.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-21 15:56:05 +02:00
Arnd Bergmann 5af7fa6810 microblaze: export some symbols
Some device drivers require the symbols _ebss, kernel_thread,
__page_offset or ___range_ok, so export them.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-21 15:56:05 +02:00
Michal Simek 7b7210d7a9 microblaze: Fix kind-of-intr checking against number of interrupts
+ Fix typographic fault.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-18 14:47:42 +02:00
Michal Simek c71a7a3875 microblaze: Fix return value for sys_ipc
Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-01 16:38:14 +02:00
Tobias Klauser 595e8fabea microblaze: Storage class should be before const qualifier
The C99 specification states in section 6.11.5:

The placement of a storage-class specifier other than at the
beginning of the declaration specifiers in a declaration is an
obsolescent feature.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-01 16:38:13 +02:00
Coly Li f57f2fe2a3 microblaze: add parameter to microblaze_read()
This patch modifies parameter of microblaze_read() from 'void' to 'struct
clocksource *cs', which fixes compile warning for incompatible parameter type.

Signed-off-by: Coly Li <coly.li@suse.de>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:27:38 +02:00
Michal Simek 2921e2bd67 microblaze: Add STATE_SAVE_ARG_SPACE for noMMU kernel too
For noMMU kernel this change nothing bring but this change
helps with MMU synchronization.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:27:33 +02:00
Michal Simek 6dfb79aa11 microblaze: Do not check use_dcache
It is not necessary to check cpuinfo.use_dcache because
this checking is done in function which call that functions

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:27:31 +02:00
Michal Simek fbeda67782 microblaze: Do not use PVR configuration for broken MB version
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:27:28 +02:00
Michal Simek 79533fd4cb microblaze: Fix USR1/2 pvr printing message
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:09:18 +02:00
Roel Kluin 6e60c14810 microblaze: iowrite upon timeout
retries reaches -1, so the iowrite occurrs upon timeout.

Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:09:18 +02:00
Michal Simek 6714fcc34e microblaze: Remove redundant variable
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:09:18 +02:00
Michal Simek e1c4bd0897 microblaze: Move start_thread to process.c
This change is due to upcomming MMU merge

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:09:18 +02:00
Michal Simek df4f3eb7c3 microblaze: Add missing preadv and pwritev syscalls
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:09:17 +02:00
Michal Simek bf7e9da4e7 microblaze: Remove sparse error in traps.c
CHECK   arch/microblaze/kernel/traps.c
arch/microblaze/kernel/traps.c:37:47: warning: Using plain integer as NULL pointer
CC      arch/microblaze/kernel/traps.o

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:09:17 +02:00
Michal Simek ac3efab506 microblaze: Rename kernel_mode to pt_mode in pt_regs
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:09:17 +02:00
Michal Simek 51eb6dc9ca microblaze: Remove while(1) loop from show_regs function
I removed it because of show_regs can't break die function.
If process/kernel failed, die (do_exit) function resolve it.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:09:16 +02:00
Huang Weiyi 00300d6746 microblaze: remove duplicated #include's
Remove duplicated #include's in
  arch/microblaze/include/asm/io.h
  arch/microblaze/kernel/prom.c
  arch/microblaze/kernel/ptrace.c
  arch/microblaze/kernel/signal.c
  arch/microblaze/kernel/sys_microblaze.c

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-14 11:09:15 +02:00
Michal Simek 5a86dc1a74 microblaze: struct device - replace bus_id with dev_name()
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-14 10:37:27 +02:00
Michal Simek a8fb748e89 microblaze: Simplify copy_thread()
Removing nr parameter from copy_tread function
commit 6f2c55b843

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-14 10:37:22 +02:00
Michal Simek 5f8ffb5f66 microblaze_v8: Makefiles for Microblaze cpu
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:51 +01:00
Michal Simek eedbdab99f microblaze_v8: Interrupt handling and timer support
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Reviewed-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:49 +01:00
Michal Simek 65bc60930c microblaze_v8: traps support
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:29 +01:00
Michal Simek 7dcbbb2b17 microblaze_v8: IPC support
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:28 +01:00
Michal Simek 2b43845426 microblaze_v8: ptrace support
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:27 +01:00
Michal Simek 6496a23add microblaze_v8: process and init task function
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:26 +01:00
Michal Simek c47f10baa0 microblaze_v8: asm-offsets.c
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:25 +01:00
Michal Simek ec9f910184 microblaze_v8: setup.c, setup.h - system setting
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Reviewed-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:24 +01:00
Michal Simek ecc6dfc8ad microblaze_v8: heartbeat file
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:24 +01:00
Michal Simek 89272a51b3 microblaze_v8: early_printk support
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:22 +01:00
Michal Simek 16bfeaf23e microblaze_v8: vmlinux.lds.S - linker script
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:20 +01:00
Michal Simek 6d5af1a35f microblaze_v8: assembler files head.S, entry-nommu.S, syscall_table.S
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:20 +01:00
Michal Simek b0c62724a5 microblaze_v8: PVR support, cpuinfo support
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:18 +01:00
Michal Simek f6b165c6ae microblaze_v8: kernel modules support
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:17 +01:00
Michal Simek 8beb8503bf microblaze_v8: cache support
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:16 +01:00
Michal Simek 37069abf29 microblaze_v8: Selfmodified code
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:15 +01:00
Michal Simek 2148daa9c4 microblaze_v8: Signal support
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:14 +01:00
Michal Simek c4df4bc155 microblaze_v8: exception handling
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:13 +01:00
Michal Simek 12e8414263 microblaze_v8: Open firmware files
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Reviewed-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:12 +01:00
Michal Simek 406107dacd microblaze_v8: Cpuinfo handling
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:11 +01:00