Commit Graph

69 Commits

Author SHA1 Message Date
Linus Torvalds 90abb7b5f3 ppc: remove two extraneous descriptors for the 405EP CPU
The patch to add them keeps on getting applied, over and
over again ;)

Hopefully no more.
2005-06-10 09:37:21 -07:00
Benjamin Herrenschmidt 0086b5ec78 [PATCH] ppc32: Fix nasty sleep/wakeup problem
Despite all the care lately in making the powermac sleep/wakeup as
robust as possible, there is still a nasty related to the use of cpufreq
on PMU based machines.  Unfortunately, it affects paulus old powerbook
so I have to fix it :)

We didn't manage to understand what is precisely going on, it leads to
memory corruption and might have to do with RAM not beeing properly
refreshed when a cpufreq transition is done right before the sleep.

The best workaround (and less intrusive at this point) we could come up
with is included in this patch.  We basically do _not_ force a switch to
high speed on suspend anymore (that is what is causing the problem) on
those machines.  We still force a speed switch on wakeup (since we don't
know what speed we are coming back from sleep at, and that seems to work
fine).

Since, during this short interval, the actual CPU speed might be
incorrect, we also hack around by multiplying loops_per_jiffy by 2 (max
speed factor on those machines) during early wakeup stage to make sure
udelay's during that time aren't too short.

For after 2.6.12, we'll change udelay implementation to use the CPU
timebase (which is always constant) instead like we do on ppc64 and thus
get rid of all those problems.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-09 21:33:35 -07:00
Eugene Surovegin 7fbdf1a23b [PATCH] ppc32: add 405EP cpu_spec entry
Add a definition for PPC 405EP which was lost somehow during 2.4 -> 2.6
transition.

Recent change to arch/ppc/kernel/misc.S ("Fix incorrect CPU_FTR fixup usage
for unified caches") triggered this bug and 405EP boards don't boot
anymore.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-09 15:39:52 -07:00
Eugene Surovegin beb9e1c3f3 [PATCH] ppc32: add 405EP cpu_spec entry
Add a definition for PPC 405EP which was lost somehow during 2.4 -> 2.6
transition.

Recent change to arch/ppc/kernel/misc.S ("Fix incorrect CPU_FTR fixup usage
for unified caches") triggered this bug and 405EP boards don't boot
anymore.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-08 16:21:12 -07:00
Eugene Surovegin ad95d6098d [PATCH] ppc32: add 405EP cpu_spec entry
Add a definition for PPC 405EP which was lost somehow during 2.4 -> 2.6
transition.

Recent change to arch/ppc/kernel/misc.S ("Fix incorrect CPU_FTR fixup usage
for unified caches") triggered this bug and 405EP boards don't boot
anymore.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-07 13:39:26 -07:00
Kumar Gala 4481e8eea7 [PATCH] ppc32: Fix incorrect CPU_FTR fixup usage for unified caches
Runtime feature support for unified caches was testing a userland feature
flag (PPC_FEATURE_UNIFIED_CACHE) instead of a cpu feature flag
(CPU_FTR_SPLIT_ID_CACHE).  Luckily the current defined bit mask for cpu
features and userland features do not overlap so this only causes an issue
on machines with a unified cache, which is extremely rare on PPC today.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-06 14:42:23 -07:00
Benjamin Herrenschmidt f93ea23498 [PATCH] ppc32: Apple device-tree bug fix
This is the ppc32 patch equivalent to the just posted ppc64 one working
around a bug in Apple device-trees regarding the "cpus" nodes.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-01 07:54:13 -07:00
Kumar Gala 6cf2b3fc99 [PATCH] ppc32: i8259 PIC should not be initialized if PCI is not configured
Trying to initialize the i8259 PIC will not work if CONFIG_PCI is not
enabled.  The kernel hangs if the initialization is tried.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28 16:46:16 -07:00
Kumar Gala f9e4a00582 [PATCH] ppc32: Add soft reset to MPC834x
This change allows mpc83xx_restart to issue a software reset.

Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28 16:46:16 -07:00
Kumar Gala ff945023c6 [PATCH] ppc32: MPC834x BCSR_SIZE too small for use in a BAT.
The call to io_block_mapping was creating an invalid BAT entry because the
value of BCSR_SIZE (32K) is too small to be used in a BAT (128K min).  This
change removes the io_block_mapping call since these registers can easily
be mapped using ioremap at the point of use.

Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28 16:46:16 -07:00
Kumar Gala 92b4dc1625 [PATCH] ppc32: Simplified load string emulation error checking
The error checking for emulation of load string instructions was overly
generous and would cause certain valid forms of the instructions to be
treated as illegal.  We drop the range checking since the architecture
allows this to be boundedly undefined.  Tests on CPUs that support these
instructions appear not do cause illegal instruction traps on range errors
and just allow the execution to occur.

Thanks to Kim Phillips for debugging this and figuring out what real HW was
doing.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28 16:46:16 -07:00
Kumar Gala 91f9855a7a [PATCH] ppc32: Fix building MPC8555 CDS when CONFIG_PCI is disabled
The patch that introduced support for the VIA chipset broke building if
CONFIG_PCI is disabled.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28 16:46:16 -07:00
Vitaly Bordug a6dbba77a9 [PATCH] ppc32: Support for 82xx PQII on-chip PCI bridge
This patch adds on-chip PCI bridge support for the PQ2 family.  The
incomplete existent code is updated with interrupt handling stuff and
board-specific bits for 8272ADS and PQ2FADS; the related files were renamed
(from m8260_pci to m82xx_pci) to be of more generic fashion.  This is
tested with 8266ADS and 8272ADS, should work on PQ2FADS as well.

Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28 16:46:15 -07:00
Kumar Gala ed36959621 [PATCH] ppc32: Add VIA IDE support to MPC8555 CDS platform
Add support for the VIA IDE controller that exists on the MPC8555 CDS
system.  Updated the config for the system to enable support by default.

Signed-off-by: Scott Hall <shall@mvista.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28 16:46:15 -07:00
Kumar Gala 252fcaed48 [PATCH] ppc32: Fix some minor issues related to FSL Book-E KGDB support
Some debug registers needed to be initialized early on to allow proper
support for KGDB.  Additionally, we need to setup the
ppc.md_early_serial_map function pointer on boards that have serial support
for KGDB.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28 16:46:15 -07:00
Kumar Gala 94b9f46d61 [PATCH] ppc32: Fix uImage make target to report success correctly
The existing make rule when building a uImage would check to see if the
image file existed to report 'is ready' or 'not made'.  However make
appeared to compute the file list before the rule was executed.

Signed-off-by: Chris Clark <cpclark@xmission.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28 16:46:14 -07:00
Benjamin Herrenschmidt b16eeb4729 [PATCH] ppc32: Fix cpufreq vs. sleep issue
Recent kernels occasionally trigger a PMU timeout on some mac laptops,
typically on wakeup from sleep.  This seem to be caused by either a too big
latency caused by the cpufreq switch on wakeup from sleep or by an
interrupt beeing lost due to the reset of the interrupt controller done
during wakeup.

This patch makes that code more robust by stopping PMU auto poll activity
around cpufreq changes on machines that use the PMU for such changes (long
latency switching involving a CPU hard reset and flush of all caches) and
by removing the reset of the open pic interrupt controller on wakeup (that
can cause the loss of an interrupt and Darwin doesn't do it, so it must not
be necessary).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28 11:14:01 -07:00
Benjamin Herrenschmidt d6649bc76a [PATCH] ppc32: small cpufreq update
This patch adds a missing attribute to pmac cpufreq so that
"scaling_available_frequencies" works.  It also cleans up the duplicate
definitions for low and high speed constants.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: John Clemens <clemej@alum.rpi.edu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28 11:13:59 -07:00
Kumar Gala e16fa6b9d2 [PATCH] ppc32: Fix an off-by-one error in ipic_init
There is an off-by-one error in the IPIC code that configures the
external interrupts (Edge or Level Sensitive).

Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-23 10:58:31 -07:00
Matt Porter b2665f92ae [PATCH] ppc32: fix CONFIG_TASK_SIZE handling on 44x
This patch fixed CONFIG_TASK_SIZE handling on 44x.  Currently head_44x.S
hardcodes 0x80000000, which breaks if user chooses to change TASK_SIZE
(e.g.  for 3G user-space).  Tested on Ocotea in 3G/1G configuration.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:19 -07:00
Kumar Gala 7f8cd80fb2 [PATCH] ppc32: Fix platform device initialization of 8250 serial ports
Initialization of 8250 serial ports that are platform devices require that
at empty entry exists in the array of plat_serial8250_port.  With out an
empty entry we can get some pretty random behavior.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:19 -07:00
Paul Mackerras 45fed46f5b [PATCH] ppx32: Fix uninitialized variable in set_preferred_console
This fixes an uninitialized variable warning in arch/ppc/kernel/setup.c,
and this time gcc is actually right, there is a path that could result
in offset being uninitialized.  Zero is a sane default in this instance.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 07:54:11 -07:00
Paul Mackerras 72480ef863 [PATCH] ppc32: Fix __copy_tofrom_user return value
Recently the __copy_tofrom_user routine was modified to avoid doing
prefetches past the end of the source array.  However, in doing so we
introduced a bug in that it now returns the wrong value for the number
of bytes not copied when a fault is encountered.  This fixes it to
return the correct number.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 07:54:10 -07:00
Paul Mackerras 3207a80a6e [PATCH] ppc32: remove unused computation
We are computing phys in the code below and never using.  This patch
takes out the redundant computation.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 07:54:10 -07:00
Paul Mackerras 6c37a88c5b [PATCH] ppc32: don't call progress functions after boot
On ppc32, the platform code can supply a "progress" function that is
used to show progress through the boot.  These functions are usually
in an init section and so can't be called after the init pages are
freed.  Now that the cpu bringup code can be called after the system
is booted (for hotplug cpu) we can get the situation where the
progress function can be called after boot.  The simple fix is to set
the progress function pointer to NULL when the init pages are freed,
and that is what this patch does (note that all callers already check
whether the function pointer is NULL before trying to call it).

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 07:54:10 -07:00
Paul Mackerras 19bbdf0e51 [PATCH] ppc32: enable use of early_param
We need to call parse_early_param() early on to allow usage of
early_param() for command line parsing.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 09:27:05 -07:00
Kumar Gala b272125273 [PATCH] ppc32: Fix POWER3/POWER4 compiler error
In separating out support for hardware floating point we missed the fact
that both POWER3 and POWER4 have HW FP.  Enable CONFIG_PPC_FPU for POWER3
and POWER4 fixes the issue.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:28 -07:00
Anton Blanchard 7d12e522ba [PATCH] ppc64: remove hidden -fno-omit-frame-pointer for schedule.c
While looking at code generated by gcc4.0 I noticed some functions still
had frame pointers, even after we stopped ppc64 from defining
CONFIG_FRAME_POINTER.  It turns out kernel/Makefile hardwires
-fno-omit-frame-pointer on when compiling schedule.c.

Create CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER and define it on architectures
that dont require frame pointers in sched.c code.

(akpm: blame me for the name)

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:32 -07:00
Kumar Gala 696c2b9f97 [PATCH] ppc32: Simplified PPC core revision report
We can identify new Freescale PPC cores by the fact that the MSB of the PVR
is set.  If we are a new Freescale core the decode of major/minor revision
numbers is simplified so we dont have to add new case checks for a every
new Freescale core.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:32 -07:00
David Woodhouse 075d6eb16d [PATCH] ppc32: platform-specific functions missing from kallsyms.
The PPC32 kernel puts platform-specific functions into separate sections so
that unneeded parts of it can be freed when we've booted and actually
worked out what we're running on today.

This makes kallsyms ignore those functions, because they're not between
_[se]text or _[se]inittext.  Rather than teaching kallsyms about the
various pmac/chrp/etc sections, this patch adds '_[se]extratext' markers
for kallsyms.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:31 -07:00
Al Viro 5cae841b13 [PATCH] ISA DMA Kconfig fixes - part 1
A bunch of drivers use ISA DMA helpers or their equivalents for
platforms that have ISA with different DMA controller (a lot of ARM
boxen).  Currently there is no way to put such dependency in Kconfig -
CONFIG_ISA is not it (e.g.  it is not set on platforms that have no ISA
slots, but have on-board devices that pretend to be ISA ones).

New symbol added - ISA_DMA_API.  Set when we have functional
enable_dma()/set_dma_mode()/etc.  set of helpers.  Next patches in the
series will add missing dependencies for drivers that need them.

I'm very carefully staying the hell out of the recurring flamefest on
what exactly CONFIG_ISA would mean in ideal world - added symbol has a
well-defined meaning and for now I really want to treat it as completely
independent from the mess around CONFIG_ISA.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-04 07:33:13 -07:00
Benjamin Herrenschmidt e521dca64e [PATCH] ppc32: Fix might_sleep() warning with clock spreading
The clock spreading disable/enable code was called to late/early during
the suspend/resume code on some laptops and would trigger a
might_sleep() warning due to the down() call in the low level i2c code.

This fixes it by calling those functions earlier/later when interrupts
are still enabled.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-02 08:15:22 -07:00
Benjamin Herrenschmidt f0f539755b [PATCH] ppc32: Fix sleep on old 101 PowerBook
A typo in the machine table incorrectly mark the 101 PowerBook as
needing explicit callback from the video driver to enable sleep mode. I
did not implement that mecanism for chipsest older than r128, so we need
to mark this machine as always beeing able to sleep for now.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 19:43:54 -07:00
Benjamin Herrenschmidt 15fd56867b [PATCH] ppc32: Workaround a cache flush issue on sleep
We are experiencing a problem when flushing the CPU caches before sleep
on some laptop models using the 750FX CPU rev 1.X. While I haven't been
able to figure out a proper explanation for what's going on, I do have a
workaround that seem to work reliably and allows those machine to sleep
and wakeup properly again.

I'll re-update that code if/when I ever find exactly what is happening
with those CPU revisions.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 18:22:34 -07:00
Jesper Juhl 7ed20e1ad5 [PATCH] convert that currently tests _NSIG directly to use valid_signal()
Convert most of the current code that uses _NSIG directly to instead use
valid_signal().  This avoids gcc -W warnings and off-by-one errors.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:59:14 -07:00
Dan Malek 1bdacf88eb [PATCH] ppc32: workaround for spurious IRQs on PQ2
There is a problem with large amounts of spurious IRQs on PowerPC 82xx
systems.

The problem is corrected by adding sync at the end of cpm2_mask_and_ack.
This may be needed on 8xx as well but has not yet been confirmed.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Dan Malek <dan@embeddedalley.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:42 -07:00
Paul Mackerras d5812a77e5 [PATCH] ppc32: Fix address checking on lmw/stmw align exception
The handling of misaligned load/store multiple instructions did not check
to see if the address was ok to access before using __{get,put}_user().

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:42 -07:00
Benjamin Herrenschmidt b20cc8aff2 [PATCH] ppc32: Fix a sleep issues on some laptops
Some earlier models of aluminium powerbooks and ibook G4s have a clock chip
that requires some tweaking before and after sleep.  It seems that without
that magic incantation to disable and re-enable clock spreading, RAM isn't
properly refreshed during sleep.  This fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:42 -07:00
Chris Elston a497aa20e5 [PATCH] ppc32: add rtc hooks in PPC7D platform file
This patch adds the hooks into the PPC7D platforms file to support the DS1337
RTC device as the clock device for the PPC7D board.

Signed-off-by: Chris Elston <chris.elston@radstone.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:41 -07:00
Chris Elston 630710e3f7 [PATCH] ppc32: fix for misreported SDRAM size on Radstone PPC7D platform
This patch fixes the SDRAM output from /proc/cpuinfo.  The previous code
assumed that there was only one bank of SDRAM, and that the size in the memory
configuration register was the total size.

Signed-off-by: Chris Elston <chris.elston@radstone.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:40 -07:00
Paul Mackerras 443a848cd3 [PATCH] ppc32: refactor FPU exception handling
Moved common FPU exception handling code out of head.S so it can be used by
several of the sub-architectures that might of a full PowerPC FPU.

Also, uses new CONFIG_PPC_FPU define to fix alignment exception handling
for floating point load/store instructions to only occur if we have a
hardware FPU.

Signed-off-by: Jason McMullan <jason.mcmullan@timesys.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:40 -07:00
Benjamin Herrenschmidt f1c55dea0b [PATCH] ppc32: Fix errata for some G3 CPUs
Some G3 CPUs can crash in funny way if a store from an FPU register
instruction is executed on a register that has never been initialized since
power on.  This patch fixes it by making sure all FP registers have been
properly initialized at kernel boot and when waking from sleep.  It also makes
the code that decides wether HID0_BTIC and HID0_DPM are allowed on a given CPU
smarter (it can actually _clear_ them now if they are not allowed instead of
just setting them when they are allowed in case the firmware got them wrong)

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:40 -07:00
Sam Ravnborg b3d9ae4b98 [PATCH] kbuild/ppc: tell when uimage was not built
Tom Rini said:
  Note that there is still a trivial'ish change to make.  When mkimage
  doesn't exist on the host we should say "uImage not made" or
  something similar.

So I did like Tom asked.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-30 16:51:42 -07:00
Al Viro 056de2fa12 [PATCH] ppc user annotations: debug_setconetext(2)
3rd argument of sys_debug_setcontext() is also a userland pointer.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:59 -07:00
Al Viro 91de1fff2d [PATCH] ppc sparse annotations: emulate_string_inst()
replaced declaration of EA from u32 to unsigned long - this beast is
used only to cast it to (userland) pointer and proper integer type for
that is unsigned long. 

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:58 -07:00
Al Viro d01daf72f0 [PATCH] ppc iomem annotations: pmac_low_i2c
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:58 -07:00
Al Viro ba724a373a [PATCH] ppc iomem annotations: ebony_setup_pcix()
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:58 -07:00
Al Viro 92a11f9e7c [PATCH] ppc iomem annotations: ->io_base_virt
* ->io_base_virt in struct pci_controller is iomem pointer.  Marked as such.
  Most of the places that used it are already annotated to expect iomem.
* places that did gratitious (and wrong) casts a-la
	isa_io_base = (unsigned long)ioremap(...);
	hose->io_base_virt = (void *)isa_io_base;
  turned into
	hose->io_base_virt = ioremap(...);
	isa_io_base = (unsigned long)hose->io_base_virt;
* pci_bus_io_base() annotated as returning iomem pointer.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:57 -07:00
Al Viro 9090e001f2 [PATCH] ppc user annotations: sigcontext
sigcontext.regs is a userland pointer

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:57 -07:00
Al Viro 8e293ada7d [PATCH] ppc trivial iomem annotations: pmac_smp.c
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-24 14:58:08 -07:00