Commit Graph

145 Commits

Author SHA1 Message Date
Jesper Nilsson c5ec6fb08d [CRIS] Remove links from CRIS build
Remove the links to architecture and machine dependent directories
(boot, lib, drivers, arch, mach)

The links were created and used mostly from the arch/cris/Makefile,
so why not dispense with them altogether?
Changed $(ARCH) to "cris" in Makefile, it is easier to read this way.

The CRISv32 head.S common files for the kernel and compressed images
needed to be modified to use ifdefs instead of using the now removed
mach link. Since there are only two versions, this is not a huge loss
in readability.

The link to vmlinux.lds.S is also replaced with a merged version
which uses ifdefs to select the correct layout.
System.map before and after are identical.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
2008-10-31 23:37:57 +01:00
Jesper Nilsson 0365f707c9 [CRIS] Merge asm-offsets.c for both arches into one file.
Eliminates the link to arch specific asm-offsets.c from CRIS
architecture build system.

Resulting asm-offsets.s are identical before and after change
for both arch-v10 and arch-v32.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
2008-10-31 23:37:00 +01:00
Jesper Nilsson 556dcee7b8 [CRIS] Move header files from include to arch/cris/include.
Change all users of header files to correct path.
Remove some unneeded headers for arch-v32.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-10-29 17:29:44 +01:00
Adrian Bunk 4110a0d620 cris: use bcd2bin/bin2bcd
Change cris to use the new bcd2bin/bin2bcd functions instead of the
obsolete BCD_TO_BIN/BIN_TO_BCD macros.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Chris Zankel <zankel@tensilica.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20 08:52:41 -07:00
Linus Torvalds b73b636e89 Merge branch 'for-linus' of git://www.jni.nu/cris
* 'for-linus' of git://www.jni.nu/cris:
  CRIS: proper defconfig setup
  [CRIS] Rename boot-linkscripts and fix the path to them.
2008-10-17 09:09:48 -07:00
Adrian Bunk 8f808417fe CRIS: proper defconfig setup
This patch moves the cris defconfigs to arch/cris/configs/ where they
belong.

As a side effect they can now be used directly through e.g.
  make ARCH=cris artpec_3_defconfig

The default defconfig is set through KBUILD_DEFCONFIG.

Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-10-13 21:34:55 +02:00
Adrian Bunk 9d5a9e7465 Remove asm/a.out.h files for all architectures without a.out support.
This patch also includes the required removal of (unused) inclusion of
<asm/a.out.h> <linux/a.out.h>'s in the arch/ code for these
architectures.

[dwmw2: updated for 2.6.27-rc]
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-09-06 19:30:24 +01:00
Harvey Harrison 42a9a58361 cris: use the common ascii hex helpers
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Mikael Starvik <starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-26 12:00:05 -07:00
Thomas Petazzoni 2d6ffcca62 inflate: refactor inflate malloc code
Inflate requires some dynamic memory allocation very early in the boot
process and this is provided with a set of four functions:
malloc/free/gzip_mark/gzip_release.

The old inflate code used a mark/release strategy rather than implement
free.  This new version instead keeps a count on the number of outstanding
allocations and when it hits zero, it resets the malloc arena.

This allows removing all the mark and release implementations and unifying
all the malloc/free implementations.

The architecture-dependent code must define two addresses:
 - free_mem_ptr, the address of the beginning of the area in which
   allocations should be made
 - free_mem_end_ptr, the address of the end of the area in which
   allocations should be made. If set to 0, then no check is made on
   the number of allocations, it just grows as much as needed

The architecture-dependent code can also provide an arch_decomp_wdog()
function call.  This function will be called several times during the
decompression process, and allow to notify the watchdog that the system is
still running.  If an architecture provides such a call, then it must
define ARCH_HAS_DECOMP_WDOG so that the generic inflate code calls
arch_decomp_wdog().

Work initially done by Matt Mackall, updated to a recent version of the
kernel and improved by me.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Mikael Starvik <mikael.starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 10:53:28 -07:00
Johannes Weiner 9109fb7b35 mm: drop unneeded pgdat argument from free_area_init_node()
free_area_init_node() gets passed in the node id as well as the node
descriptor.  This is redundant as the function can trivially get the node
descriptor itself by means of NODE_DATA() and the node's id.

I checked all the users and NODE_DATA() seems to be usable everywhere
from where this function is called.

Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:16 -07:00
Linus Torvalds 3a53337428 Merge branch 'for-linus' of git://www.jni.nu/cris
* 'for-linus' of git://www.jni.nu/cris:
  [CRISv10] Clean up compressed/misc.c
  [CRISv10] Correct whitespace damage.
  [CRIS] Correct definition of subdirs for install_headers.
  [CRIS] Correct image makefiles to allow using a separate OBJ-directory.
  [CRIS] Build fixes for compressed and rescue images for v10 and v32:
  It looks at least odd to apply spin_unlock to a mutex.
  cris: compile fixes for 2.6.26-rc5
2008-07-20 17:37:46 -07:00
Jesper Nilsson 404571525d [CRIS] Rename boot-linkscripts and fix the path to them.
This makes the CRIS-port directories follow the same naming
convention as the rest of the kernel.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-07-14 08:59:48 +02:00
Jesper Nilsson d17ffb4c9d Merge branch 'cris_debug_port_fix' into cris 2008-07-01 00:14:13 +02:00
Jesper Nilsson fea72637c6 Merge branch 'build_fix' into cris 2008-07-01 00:13:54 +02:00
Jesper Nilsson f3c4b53d5e [CRISv10] Clean up compressed/misc.c
Many minor fixes in whitespace and formatting.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-06-30 23:57:25 +02:00
Jesper Nilsson bd451d5ed2 [CRISv10] Correct whitespace damage.
The previous patch was whitespace damaged, correct to indent
using tabs.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-06-30 23:22:51 +02:00
Jesper Nilsson 7dd071058f [CRIS] Correct image makefiles to allow using a separate OBJ-directory.
Make compile succeed when building with O= (srctree != objtree).

Signed-off-by: Hinko Kocevar <hinko.kocevar@cetrtapot.si>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-06-30 20:38:06 +02:00
Jesper Nilsson 53e43d014c Merge branch 'pcf8563_mutex_spinlock' into cris 2008-06-29 23:38:42 +02:00
Jesper Nilsson dc1493aff0 Merge branch 'cris_debug_port_fix' into cris 2008-06-29 23:38:38 +02:00
Jesper Nilsson bdb144b67a [CRIS] Build fixes for compressed and rescue images for v10 and v32:
- Use the normal cross gcc instead of using an elf specific cris toolchain.
  This removes the dependency of this second toolchain.

- Use the normal cross objcopy instead of overriding it to use elf-toolchain.
  This allows compiling using "CROSS_COMPILE=$CRIS_GCC/cris-axis-linux-gnu-"
  instead of just "CROSS_COMPILE=$CRIS_GCC/cris-axis-linux-gnu/bin/"

- Remove redundant rules for compiling, the implicit rules are sufficient.

- Convert the arch/cris/arch-v10/boot/compressed/head.S to format
  accepted by the cris-axis-linux-gnu-gcc (registers must be prefixed
  with '$', remove explicit underscore on exported symbols)

- Remove a number of unused (and duplicated) prototypes from
  arch/cris/arch-v10/boot/compressed/misc.c.

- Correct memcpy and memset return values (actually return them!)

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-06-29 23:15:19 +02:00
Julia Lawall 9be48a94b8 It looks at least odd to apply spin_unlock to a mutex.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@def@
declarer DEFINE_MUTEX;
identifier m;
@@

DEFINE_MUTEX(m);

@@
identifier def.m;
@@

(
- spin_lock(&m)
+ mutex_lock(&m)
|
- spin_unlock(&m)
+ mutex_unlock(&m)
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-06-29 22:50:56 +02:00
Hinko Kocevar 3aa30df3d0 cris: compile fixes for 2.6.26-rc5
Add dummy ops for serial debug port.
Add setting of c_ispeed/c_ospeed as suggested by Alan Cox.

Signed-off-by: Hinko Kocevar <hinko.kocevar@cetrtapot.si>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-06-29 22:48:14 +02:00
Jonathan Corbet f2b9857eee Add a bunch of cycle_kernel_lock() calls
All of the open() functions which don't need the BKL on their face may
still depend on its acquisition to serialize opens against driver
initialization.  So make those functions acquire then release the BKL to be
on the safe side.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-06-20 14:05:53 -06:00
Jonathan Corbet d21c95c569 Add "no BKL needed" comments to several drivers
This documents the fact that somebody looked at the relevant open()
functions and concluded that, due to their trivial nature, no locking was
needed.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-06-20 14:05:50 -06:00
Jonathan Corbet 0c401df37e cris: cdev lock_kernel() pushdown
Push the cdev lock_kernel() call into cris drivers.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-05-18 15:43:40 -06:00
Jesper Nilsson 07f2402b4a cris: correct usage of __user for copy to and from user space in lib/usercopy and uaccess.h
Function __copy_user_zeroing in arch/lib/usercopy.c had the wrong parameter
set as __user, and in include/asm-cris/uaccess.h, it was not set at all for
some of the calling functions.

This will cut the number of warnings quite dramatically when using sparse.

While we're here, remove useless CVS log and correct confusing typo.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Mikael Starvik <mikael.starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 16:35:16 -08:00
Jesper Nilsson 9fe3fd03a1 CRIS: Import string.c (memcpy) from newlib: fixes compile error with gcc 4
Adrian Bunk reported another compile error with a SVN head GCC:

...
  CC      arch/cris/arch-v10/lib/string.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/string.c:138:
error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/string.c:138:
error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/string.c:139:
error: lvalue required as increment operand
...

This is due to the use of the construct:

	*((long*)dst)++ = lc;

Which isn't legal since casts don't return an lvalue.

The solution is to import the implementation from newlib,
which is continually autotested together with GCC mainline,
and uses the construct:

	*(long *) dst = lc; dst += 4;

Since this is an import of a file from newlib, I'm not touching
the formatting or correcting any checkpatch errors.

As for the earlier fix for memset.c, even if the two files for
CRIS v10 and CRIS v32 are identical at the moment, it might
be possible to tweak the CRIS v32 version.
Thus, I'm not yet folding them into the same file, at least not
until we've done some research on it.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 16:35:13 -08:00
Jesper Nilsson a10568733c CRIS v10: Include mm.h instead of vmstat.h in kernel/time.c
Commit 2f569afd9c
(CONFIG_HIGHPTE vs. sub-page page tables) introduced use of
inc_zone_page_state and dec_zone_page_state in include/linux/mm.h.

Those are defined in include/linux/vmstat.h, but after it includes
mm.h, making it impossible to include vmstat.h since inc_zone_page_state
and dec_zone_page_state then would be undefined.

arch/cris/arch-v10/kernel/time.c does just this, which makes the
CRIS v10 build break with the following error:

...
  CC      arch/cris/arch-v10/kernel/time.o
In file included from include/linux/vmstat.h:7,
                 from arch/cris/arch-v10/kernel/time.c:17:
include/linux/mm.h: In function 'pgtable_page_ctor':
include/linux/mm.h:902: error: implicit declaration of function 'inc_zone_page_state'
include/linux/mm.h: In function 'pgtable_page_dtor':
include/linux/mm.h:908: error: implicit declaration of function 'dec_zone_page_state'
make[2]: *** [arch/cris/arch-v10/kernel/time.o] Error 1
make[1]: *** [arch/cris/arch-v10/kernel] Error 2
make: *** [sub-make] Error 2
...

By changing kernel/time.c to include linux/mm.h, the build succeeds.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Mikael Starvik <mikael.starvik@axis.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 16:35:09 -08:00
Jesper Nilsson 77a746cec5 cris: import memset.c from newlib: fixes compile error with newer (pre4.3) gcc
Adrian Bunk reported the following compile error with a SVN head GCC:

...
CC arch/cris/arch-v10/lib/memset.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c: In function 'memset':
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:164: error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:165: error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:166: error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:167: error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:185: error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:189: error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:192: error: lvalue required as increment operand
... etc ...

This is due to the use of the construct:

	*((long*)dst)++ = lc;

Which is no longer legal since casts don't return an lvalue.

The solution is to import the implementation from newlib,
which is continually autotested together with GCC mainline,
and uses the construct:

	*(long *) dst = lc; dst += 4;

With this change, the generated code actually shrinks 76 bytes
since gcc notices that it can use autoincrement for the move
instruction in CRIS.

   text    data     bss     dec     hex filename
    304       0       0     304     130 memset.old.o
   text    data     bss     dec     hex filename
    228       0       0     228      e4 memset.o

Since this is an import of a file from newlib, I'm not touching
the formatting or correcting any checkpatch errors.

Note also that even if the two files for the CRIS v10 and CRIS v32
are identical at the moment, it might be possible to tweak the
CRIS v32 version. Thus, I'm not yet folding them into the same file,
at least not until we've done some research on it.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Mikael Starvik <mikael.starvik@axis.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-14 20:58:04 -08:00
Jesper Nilsson 7800029df3 CRIS: Add new timerfd syscall entries. 2008-02-08 11:54:30 +01:00
Jesper Nilsson ad433f2368 CRIS v10: Cleanup of drivers/gpio.c
- Change parameters of gpio_write (const char * buf -> const char __user *buf)
- Don't initialize static variables to zero.
- Remove useless casts from void.
- Change name of interrupt routine (gpio_pa_interrupt -> gpio_interrupt)
- Use kzmalloc instead of allocating memory and zeroing it manually.
- Correct casts for copy_to_user and copy_from_user to (void __user *)
- Make file_operations gpio_fops static.
- Make ioif_watcher static, not used outside this file.
2008-02-08 11:16:45 +01:00
Jesper Nilsson 79e04fdbb3 CRIS: Move ETRAX_AXISFLASHMAP to common Kconfig file. 2008-02-08 11:08:06 +01:00
Jesper Nilsson 45a4127c10 CRIS v10: Update drivers/gpio.c, fix locking and general improvements.
- Change all spin_lock/local_irq_save to spin_lock_irqsave.
- Change multiple returns in functions where we have a lock to goto out.
- Correct number of arguments to gpio_poll_timer_interrupt, gpio_pa_interrupt.
- Break out gpio_write logic to smaller functions to make it readable.
- In setget_input and setget_output, avoid extra if-indent level.
- Change name LED_* -> CRIS_LED_* to avoid name clash.
- Don't use braces around single statement ifs.
- Fix whitespace errors.
- Remove useless CVS id and log.
2008-02-08 11:06:34 +01:00
Jesper Nilsson 8f2972529f CRIS v10: Change name of low voltage read and set macros. 2008-02-08 11:06:33 +01:00
Jesper Nilsson 9bf79539ed CRIS v10: Remove duplicated folding of carry from lib/checksum.S, it is not needed.
Also, remove useless CVS id tag.
2008-02-08 11:06:32 +01:00
Jesper Nilsson ab59284eae CRIS v10: Remove duplicated folding of carry from lib/checksumcopy.S, it is not needed.
Also, remove useless CVS id tag.
2008-02-08 11:06:32 +01:00
Jesper Nilsson 2afab729f5 CRIS v10: Clear TIF_SYSCALL_TRACE flag in ptrace_disable in kernel/ptrace.c 2008-02-08 11:06:32 +01:00
Jesper Nilsson b1220e2e7f CRIS v10: Update kernel/io_interface_mux.c
Fixed a bug where two interfaces using pins in the same pin group could
not be allocated at the same time even if there where no pin collisions.

Change all restore and returns into goto exit pattern.

Also, remove useless CVS id and correct chapter reference for ETRAX100LX
Designer's Reference in comment.
2008-02-08 11:06:32 +01:00
Jesper Nilsson 5f526d1467 CRIS v10: Setup serial port 2 to avoid accidental TXD pulse on startup.
If serial port 2 is used, select it in R_GEN_CONFIG.
If serial port 2 is used, setup the control registers for the port.
This is done to avoid a pulse on the TXD line during start up,
which could disturb some units.

Also, remove useless CVS id and log.
2008-02-08 11:06:31 +01:00
Jesper Nilsson c974a9e5a3 CRIS v10: Add synchronous serial port driver for CRIS v10. 2008-02-08 11:06:31 +01:00
Jesper Nilsson 4f073eff3f CRIS v10: Don't call get_mmu_context when switching between tasks with shared memory descriptors
Also, cleanup formatting and fix whitespace errors.
2008-02-08 11:06:31 +01:00
Jesper Nilsson 40316c1fad CRIS v10: Fix bug where error returns didn't restore irqs in mm/fault.c
Don't return when we're inside local_irq_disable(), use goto exit instead.
Also, cleanup some whitespace errors.
2008-02-08 11:06:31 +01:00
Jesper Nilsson 5712e4dfc6 CRIS v10: Remove useless CVS id tag from lib/old_checksum.c 2008-02-08 11:06:31 +01:00
Jesper Nilsson f12bb5c04a CRIS v10: Remove useless CVS id and log from lib/dram_init.S 2008-02-08 11:06:31 +01:00
Jesper Nilsson da4d091348 CRIS v10: Remove useless CVS id from kernel/shadows.c 2008-02-08 11:06:31 +01:00
Jesper Nilsson b2d0814258 CRIS v10: Reformat drivers/makefile using tabs. 2008-02-08 11:06:31 +01:00
Jesper Nilsson c3d6ddddb0 CRIS: Move common Kconfig variable ETRAX_RTC to arch independet Kconfig. 2008-02-08 11:06:30 +01:00
Jesper Nilsson 10f9f9c857 CRIS v10: Remove CVS id from kernel/process.c 2008-02-08 11:06:30 +01:00
Jesper Nilsson c8acccc959 CRIS v10: Remove CVS log and id from kernel/kgdb.c 2008-02-08 11:06:30 +01:00
Jesper Nilsson 8d67bca55c CRIS v10: Cleanup kernel/irq.c
- Remove useless CVS id tag.
- Remove no longer needed extern declarations for kgdb.
2008-02-08 11:06:30 +01:00