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Commit Graph

50384 Commits

Author SHA1 Message Date
Kumar Gala
4330f5da98 [POWERPC] Created arch/powerpc/platforms/Kconfig for "Platform support"
Split "Platform support" menu out from arch/powerpc/Kconfig into
arch/powerpc/platforms/Kconfig in prep for allowing other sub-arches to
be configured via a single "Platform support" menu.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-03-22 10:09:42 -05:00
Kumar Gala
35a1245ad0 [POWERPC] Split several platforms into their respective Kconfig file
Moved pseries, iseries, chrp, prep, maple and pasemi into their respective
arch/powerpc/platform/*/Kconfig files out of arch/powerpc/Kconfig

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-03-22 10:07:32 -05:00
Kumar Gala
fd42c71751 [POWERPC] Removed config options that we don't support in embedded6xx
When we started arch/powerpc we duplicated a number of config options from
arch/ppc for various platforms that are supported.  Now that we actually
support a few platforms, remove all the ones that haven't been moved over.
Additionally, this cleanup moved the 82xx/PQ2 options over into
arch/powerpc/platforms/82xx/Kconfig where they belong.  It also killed
GEN550 which doesn't exist in arch/powerpc.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-03-22 10:06:40 -05:00
Kumar Gala
72e77a1b94 [POWERPC] Split cell platforms into their respective Kconfig file
Cleaning up arch/powerpc/Kconfig platform support.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-03-22 10:05:00 -05:00
Kumar Gala
9b8babf4a9 [POWERPC] Split powermac platforms into their own Kconfig file
Cleaning up arch/powerpc/Kconfig platform support.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-03-22 10:04:13 -05:00
Kumar Gala
5396132cf9 [POWERPC] Split 52xx platforms into their own Kconfig file
Cleaning up arch/powerpc/Kconfig platform support.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-03-22 10:03:23 -05:00
Anton Blanchard
4002aca771 [POWERPC] Remove last_syscall
Remove last_syscall from 32bit powerpc, its been gone in 64bit for years.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:58 +11:00
Anton Blanchard
f4db196717 [POWERPC] Remove _get_SP
We already have an inline __get_SP, no need for yet another one.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:58 +11:00
Linas Vepstas
4980d5eb75 [POWERPC] EEH: restructure multi-function support
Rework how multi-function PCI devices are identified and traversed.
This fixes a bug with multi-function recovery on Power4 that was
introduced by a recent Power4 EEH patch.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:57 +11:00
Linas Vepstas
fa1be476a2 [POWERPC] EEH: verify state change
After requesting a state change, verify that the state change
actually ocurred, and the system ends up in the expected state.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:56 +11:00
Linas Vepstas
d0ab95ca98 [POWERPC] EEH: rm un-needed data
The EEH event notification system passes around data that is
not needed or at least, not used properly. Stop passing this
data; get it in a more reliable fashion.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:55 +11:00
Linas Vepstas
9c547768e7 [POWERPC] EEH: wait for slot status
Modify routine that returns PCI slot status to wait for slot status
to become available. This is needed, as slots that are in some remote
card cage may go offline for extended periods of time. New users for
this routine in following patches.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:54 +11:00
Linas Vepstas
90375f5396 [POWERPC] EEH: handle reset state high
Some firmware versions will return a slot reset state of "1"
when a slot is EEH frozen. Recognize this as a state that can be
handled.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:54 +11:00
Linas Vepstas
5794dbcbab [POWERPC] EEH: multifunction recovery bugfix
If the second or higher function of a multi-function device fails
to recover, this failure is not reported upwards. Fix this.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:53 +11:00
Linas Vepstas
90fdd6130f [POWERPC] EEH: hotplug recovery bugfix
If a device driver does not have native PCI error recovery,
a hotplug error recovery will be attemped. In this case,
the device driver will not report back whether its healthy
or not; simply assume that it is.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:52 +11:00
Linas Vepstas
147d6a3750 [POWERPC] EEH: support ibm,get-config-addr-info2 RTAS call
Provide support for the new ibm,get-config-addr-info2 RTAS token,
whenever it is actually available.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:52 +11:00
Linas Vepstas
2fd30be8da [POWERPC] EEH: Tolerate high mmio
Some drivers will attempt to perform a lot of mmio even after
an EEH event was detected. This is especially the case for fast cpu's
and PCI-E slots. Be a bit more lenient in allowing this.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:51 +11:00
Linas Vepstas
e0f90b6418 [POWERPC] EEH: Add clarifying messages.
There are multiple code patchs tht resuls in a "permanent
failure"; when examining rare events, it can be hard to see
which was taken. This patch adds printk's to assist.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:50 +11:00
Linas Vepstas
39d16e2959 [POWERPC] EEH: modify order of EEH state checking
Change the order in which pci error state is examined;
the "capabilites" is not valid if "reset state" is 5.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-22 22:52:49 +11:00
Stephen Rothwell
e91948fd84 [POWERPC] Minor paca optimisation
Move the slb_shadow_ptr field into the first cache line since it is
(like everything there) read-only after boot.  It is in fact statically
initialised and thereafter only read.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-21 22:35:51 +11:00
Milton Miller
0e6806734f [POWERPC] boot: export flush_cache
Move the declaration of flush_cache to ops.h for use by platform code.

Signed-off-by: Milton Miller <miltonm@bga.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-21 22:35:42 +11:00
Milton Miller
65b580395d [POWERPC] boot: rebuild when wrapper changes
Since there is magic defined per platform in the wrapper script, the
zImage targets should depend on it.

Signed-off-by: Milton Miller <miltonm@bga.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-21 22:35:40 +11:00
Scott Wood
f61e7cd21b [POWERPC] bootwrapper: Make setprop accept a const buffer.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-21 22:35:21 +11:00
Scott Wood
e0a2f28b4d [POWERPC] Document the linux,network-index property.
To allow more robust association of each network device node with an
index (such as is used by the firmware or an EEPROM to indicate MAC
addresses), a network device's node may specify the index explicitly.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: David Gibson david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-21 22:35:21 +11:00
Scott Wood
a9903811bf [POWERPC] bootwrapper: Make compression of the kernel image optional.
The --no-gzip option can be passed to the wrapper so that the kernel
image is included uncompressed into the zImage.  This is intended for
bootloaders where the zImage itself can be compressed, or where boot time
is considered more important than kernel image size.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-21 22:35:21 +11:00
Scott Wood
a07940ba00 [POWERPC] bootwrapper: Add dt_ops methods.
Add get_parent, create_node, and find_node_by_prop_value to dt_ops.
Currently only implemented by flatdevtree_misc.

Also, add a _str convenience wrapper for setprop.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-21 22:35:21 +11:00
Robert P. J. Day
e85f008d01 [POWERPC] Correct apparently misspelled "XMON" preprocessor symbol.
Correct the apparent misspelling of "XMON" to "CONFIG_XMON".

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-16 16:38:19 +11:00
David Gibson
7850ad5c39 [POWERPC] Add documentation for the zImage's gunzip convenience functions
This patch adds documenting comments to the gunzip convenience
functions added in commit ad9d2716cf.
It also removes a stray newline, and an unused global variable.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-16 16:38:19 +11:00
David Gibson
0e0293c898 [POWERPC] Update documentation for flat device tree format v17
This patch updates booting-without-of.txt to describe version 17 of
the flattened device tree format.  Version 17 is a small, backwards
compatible change from version 16, adding an extra field giving the
size of the device tree's structure block.  At this time, the kernel
has no use for the extra information, however its presence can make
life easier for bootloaders or other software manipulating the tree.

In addition this patch adds information on the size_dt_strings field
of the device tree header, present since version 3 of the flattened
tree format, but omitted from the documentation.  It also makes
changes to consistently refer to versions 16 and 17 as versions 16 and
17 in decimal, rather than version 0x10 which was occasionally used
for version 16 previously.

Finally, we also add the new field to the definition of the device
tree header structure in prom.h

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-16 16:38:19 +11:00
Mariusz Kozlowski
a782a9e3a1 [POWERPC] 8xx parenthesis balance
This balances parenthesis in powerpc 8xx header files.

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-16 16:38:19 +11:00
Joachim Fenkes
6bccf755ff [POWERPC] ibmebus: dynamic addition/removal of adapters, some code cleanup
This adds two sysfs attributes to /sys/bus/ibmebus which can be used to
notify the ebus driver of added / removed ebus devices in the OF device
tree.

Echoing the device's location code (as found in the OFDT "ibm,loc-code"
property) into the "probe" attribute will notify ebus of addition of the
device and cause the appropriate device driver's probe function to be called
on the device.

Likewise, echoing the location code into the "remove" attribute will cause
the device to be removed from the system.

The writes will block until the respective operation has finished and return
an error code if the operation failed.

In addition, two minor tidbits are fixed:

- The fake root device used to provide a common parent for all ebus devices
  is now based on device instead of of_device - it had no associated devtree
  node. This saves several checks throughout the ebus driver.

- The sysfs attributes are now generated automagically by device_register()
  instead of by the ibmebus code, which saves a few compiler warnings about
  unused return codes.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-16 16:38:19 +11:00
Joachim Fenkes
a83088003c [POWERPC] ibmebus: whitespace fixes
This fixes a lot of whitespace in ibmebus.[ch]

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-16 16:38:19 +11:00
Mark A. Greer
556b09c818 [POWERPC] 32-bit early_init() should zero from __bss_start to __bss_stop only
Currently, early_init() in setup_32.c zeroes from '_bss_start' to '_end'.
It should only zero from '__bss_start' to '__bss_stop'.  This patch does that.

Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-16 16:38:19 +11:00
Scott Wood
86a1b63349 [POWERPC] bootwrapper: Make ft_create_node() pay attention to the parent parameter.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-16 15:49:15 +11:00
Scott Wood
8941c0c495 [POWERPC] bootwrapper: Add ft_find_node_by_prop_value().
ft_find_node_by_prop_value() finds nodes with the specified
property/value pair.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-16 15:49:14 +11:00
Scott Wood
a9ec7669fc [POWERPC] bootwrapper: Make ft_get_parent() return a phandle, and NULL if already top-level.
Most of ft_get_parent() is factored out into __ft_get_parent(), which
deals only in internal node pointers.  The ft_get_parent() wrapper
handles phandle conversion in both directions (previously,
ft_get_parent() did not convert its return value).

It also now returns NULL as the parent of the toplevel node, rather than
just returning the toplevel node again (which made it rather useless in
loops).

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-16 15:49:11 +11:00
Scott Wood
c350038b2b [POWERPC] bootwrapper: Refactor ft_get_prop() into internal and external functions.
The property searching part of ft_get_prop is factored out into an
internal __ft_get_prop() which does not deal with phandles and does not
copy the property data.  ft_get_prop() is then a wrapper that does the
phandle translation and copying.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-16 15:49:10 +11:00
Scott Wood
fc58341161 [POWERPC] bootwrapper: Add ft_find_device_rel().
Add a function to look up a relative, rather than absolute, path name.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-16 15:49:08 +11:00
Scott Wood
5adeef52cc [POWERPC] bootwrapper: Use map_string() instead of lookup_string() in ft_prop().
When adding a property, the property name should be added to the string
table if it doesn't already exist.  map_string() does that;
lookup_string() will fail instead.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-13 21:15:58 +11:00
Scott Wood
9dd2c31ab8 [POWERPC] bootwrapper: Modify *pp, not *p, in ft_shuffle().
Move the caller's pointer back to match the change in the region's start,
rather than alter a byte of the device tree's content.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-13 21:15:55 +11:00
Scott Wood
78438b3601 [POWERPC] bootwrapper: Preserve the pp pointer in ft_make_space() when calling ft_reorder().
The ft_reorder() function may change the start of the region of interest,
so the pointer provided by the caller into that region must be fixed up
to still point to the same datum.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-13 21:15:52 +11:00
Scott Wood
c8aa72633e [POWERPC] bootwrapper: Make ft_get_phandle() accept and return NULL.
Currently, if ft_get_phandle() is passed NULL it will allocate an entry
for it and return a non-NULL phandle.  This patch makes it simply pass
the NULL through.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-13 21:15:50 +11:00
Scott Wood
1c53a496ba [POWERPC] bootwrapper: Rename ft_node_add() to ft_get_phandle().
This name better reflects what the function does, which is to
look up the phandle for an internal node pointer, and add it to the
internal pointer to phandle table if not found.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-13 21:15:46 +11:00
Scott Wood
7c71c04625 [POWERPC] bootwrapper: Add ft_root_node().
Clean up some of the open-coded data structure references by providing a
function to return a pointer to the tree's root node.  This is only used
in high-level functions trying to access the root of the tree, not in
low-level code that is actually manipulating the data structure.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-13 21:15:44 +11:00
Scott Wood
ce3edb30ec [POWERPC] bootwrapper: Add stddef.h to ops.h
ops.h references NULL, so include stddef.h, so files including ops.h
don't have to.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-13 21:15:42 +11:00
David Gibson
cd197ffcf1 [POWERPC] zImage: Cleanup and improve zImage entry point
This patch re-organises the way the zImage wrapper code is entered, to
allow more flexibility on platforms with unusual entry conditions.
After this patch, a platform .o file has two options:

1) It can define a _zimage_start, in which case the platform code gets
   control from the very beginning of execution.  In this case the
   platform code is responsible for relocating the zImage if necessary,
   clearing the BSS, performing any platform specific initialization, and
   finally calling start() to load and enter the kernel.

2) It can define platform_init().  In this case the generic crt0.S
   handles initial entry, and calls platform_init() before calling
   start().  The signature of platform_init() is changed, however, to
   take up to 5 parameters (in r3..r7) as they come from the platform's
   initial loader, instead of a fixed set of parameters based on OF's
   usage.

   When using the generic crt0.S, the platform .o can optionally
   supply a custom stack to use, using the BSS_STACK() macro.  If this
   is not supplied, the crt0.S will assume that the loader has
   supplied a usable stack.

In either case, the platform code communicates information to the
generic code (specifically, a PROM pointer for OF systems, and/or an
initrd image address supplied by the bootloader) via a global
structure "loader_info".

In addition the wrapper script is rearranged to ensure that the
platform .o is always linked first.  This means that platforms where
the zImage entry point is at a fixed address or offset, rather than
being encoded in the binary header can be supported using option (1).

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-13 13:35:03 +11:00
David Gibson
79c8541924 [POWERPC] zImage: Cleanup and improve prep_kernel()
This patch rewrites prep_kernel() in the zImage wrapper code to be
clearer and more flexible.  Notable changes:

	- Handling of the initrd image from prep_kernel() has moved
into a new prep_initrd() function.
	- The address of the initrd image is now added as device tree
properties, as the kernel expects.
	- We only copy a packaged initrd image to a new location if it
is in danger of being clobbered when the kernel moves to its final
location, instead of always.
	- By default we decompress the kernel directly to address 0,
instead of requiring it to relocate itself.  Platforms (such as OF)
where doing this could clobber still-live firmware data structures can
override the vmlinux_alloc hook to provide an alternate place to
decompress the kernel.
	- We no longer pass lots of information between functions in
global variables.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-13 13:35:01 +11:00
David Gibson
ad9d2716cf [POWERPC] zImage: Add more flexible gunzip convenience functions
At present, arch/powerpc/boot/main.c includes a gunzip() function
which is a convenient wrapper around zlib.  However, it doesn't
conveniently allow decompressing part of an image to one location,
then the remainder to a different address.

This patch adds a new set of more flexible convenience wrappers around
zlib, moving them to their own file, gunzip_util.c, in the process.
These wrappers allow decompressing sections of the compressed image to
different locations.  In addition, they transparently handle
uncompressed data, avoiding special case code to handle uncompressed
vmlinux images.

The patch also converts main.c to use the new wrappers, using the new
flexibility to avoid decompressing the vmlinux's ELF header twice as
we did previously.  That in turn means we avoid extending our
allocations for the vmlinux to allow space for the extra copy of the
ELF header.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-13 13:35:01 +11:00
Jake Moilanen
cfbff8a380 [POWERPC] 750CL cputable entry
750CL cputable entry from Steve Winiecki.

Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-09 15:03:26 +11:00
Zang Roy-r61911
6406063899 [POWERPC] Remove fixed setting of ROOT_DEV for 7448HPC2 platforms
Remove fixed setting of ROOT_DEV for 7448HPC2 platforms.
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-09 15:03:26 +11:00