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* Merge branch 'master' into for-linusRafael J. Wysocki2009-08-208-85/+99
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| * microblaze: Update Microblaze defconfigsMichal Simek2009-08-182-70/+91
| | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Use klimit instead of _end for memory initMichal Simek2009-08-181-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | For noMMU system when you use larger rootfs image there is problem with using _end label because we increase klimit but in memory initialization we use still _end which is wrong. Larger mtd rootfs was rewritten by init_bootmem_node. MMU kernel use static initialization where klimit is setup to _end. There is no any other hanling with klimit. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Enable ppoll syscallMichal Simek2009-08-181-1/+1
| | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Sane handling of missing timer/intc in device treeJohn Williams2009-08-182-0/+4
| | | | | | | | | | | | | | | | | | | | 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>
| * microblaze: use the generic ack_bad_irq implementationChristoph Hellwig2009-08-182-11/+0
| | | | | | | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
* | Merge branch 'master' into for-linusRafael J. Wysocki2009-07-2918-222/+128
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| * Merge branch 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds2009-07-2717-220/+126
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Makefile cleanup microblaze: Typo fix for cpu param inconsistency microblaze: Add support for R_MICROBLAZE_64_NONE microblaze: Get module loading working microblaze: remove sys_ipc microblaze: Support unaligned address for put/get_user macros microblaze: Detect new Microblaze 7.20 versions microblaze: Fix do_page_fault for no context microblaze: Add _PAGE_FILE macros to pgtable.h microblaze: Fix put_user macro for 64bits arguments microblaze: Clear print messages for DTB passing via r7 microblaze: Not to clear r7 after copying DTB to kernel microblaze: Add messages about FDT blob microblaze: Final support for statically linked DTB microblaze: remove duplicated #include microblaze: Define tlb_flush macro
| | * microblaze: Makefile cleanupSam Ravnborg2009-07-272-18/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * microblaze: Typo fix for cpu param inconsistencyMichal Simek2009-07-272-2/+2
| | | | | | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * microblaze: Add support for R_MICROBLAZE_64_NONEMichal Simek2009-07-271-0/+4
| | | | | | | | | | | | | | | | | | For example reiserfs use this relocation type. Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * microblaze: Get module loading workingJohn Williams2009-07-271-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * microblaze: remove sys_ipcArnd Bergmann2009-07-272-100/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * microblaze: Support unaligned address for put/get_user macrosMichal Simek2009-07-272-64/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * microblaze: Detect new Microblaze 7.20 versionsMichal Simek2009-07-271-0/+2
| | | | | | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * microblaze: Fix do_page_fault for no contextMichal Simek2009-07-271-9/+4
| | | | | | | | | | | | | | | | | | | | | | | | Calling fixup when we are in kernel mode. This prevent fault for copy_to/from_user. This fault was find thanks to writev01/03/04 LTP tests. Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * microblaze: Add _PAGE_FILE macros to pgtable.hMichal Simek2009-07-271-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | We need to define _PAGE_FILE macro and change pte functions. Microblaze use the same MMU as PowerPC that's why we define _PAGE_FILE in the same style. This change fixed remap_file_pages01 LTP test. Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * microblaze: Fix put_user macro for 64bits argumentsMichal Simek2009-07-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For 64bits arguments gcc caused that put_user macro works with wrong value because of optimalization. Adding volatile caused that gcc not optimized it. It is possible to use (as Blackfin do) two put_user macros with 32bits arguments but there is one more instruction which is due to duplication zero return value which is called put_user_asm macro. Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * microblaze: Clear print messages for DTB passing via r7Michal Simek2009-07-271-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * microblaze: Not to clear r7 after copying DTB to kernelMichal Simek2009-07-271-1/+0
| | | | | | | | | | | | | | | | | | | | | 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>
| | * microblaze: Add messages about FDT blobMichal Simek2009-07-271-3/+6
| | | | | | | | | | | | | | | | | | Print accurate message about place where FDT blob is. Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * microblaze: Final support for statically linked DTBJohn Williams2009-07-273-15/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * microblaze: remove duplicated #includeHuang Weiyi2009-07-271-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | Remove duplicated #include('s) in arch/microblaze/include/asm/io.h Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * microblaze: Define tlb_flush macroMichal Simek2009-07-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | This fix remove bug which we had till now in all Microblaze MMU code. Primary tested on mmap01 LTP test. We forget to flush invalid tlb which were changed - we used them and there were wrong old data which wasn't correct. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()Benjamin Herrenschmidt2009-07-271-2/+2
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mm: Pass virtual address to [__]p{te,ud,md}_free_tlb() Upcoming paches to support the new 64-bit "BookE" powerpc architecture will need to have the virtual address corresponding to PTE page when freeing it, due to the way the HW table walker works. Basically, the TLB can be loaded with "large" pages that cover the whole virtual space (well, sort-of, half of it actually) represented by a PTE page, and which contain an "indirect" bit indicating that this TLB entry RPN points to an array of PTEs from which the TLB can then create direct entries. Thus, in order to invalidate those when PTE pages are deleted, we need the virtual address to pass to tlbilx or tlbivax instructions. The old trick of sticking it somewhere in the PTE page struct page sucks too much, the address is almost readily available in all call sites and almost everybody implemets these as macros, so we may as well add the argument everywhere. I added it to the pmd and pud variants for consistency. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: David Howells <dhowells@redhat.com> [MN10300 & FRV] Acked-by: Nick Piggin <npiggin@suse.de> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Driver Core: Add platform device arch data V3Magnus Damm2009-07-221-0/+3
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow architecture specific data in struct platform_device V3. With this patch struct pdev_archdata is added to struct platform_device, similar to struct dev_archdata in found in struct device. Useful for architecture code that needs to keep extra data associated with each platform device. Struct pdev_archdata is different from dev.platform_data, the convention is that dev.platform_data points to driver-specific data. It may or may not be required by the driver. The format of this depends on driver but is the same across architectures. The structure pdev_archdata is a place for architecture specific data. This data is handled by architecture specific code (for example runtime PM), and since it is architecture specific it should _never_ be touched by device driver code. Exactly like struct dev_archdata but for platform devices. [rjw: This change is for power management mostly and that's why it goes through the suspend tree.] Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* headers: smp_lock.h reduxAlexey Dobriyan2009-07-123-3/+0
| | | | | | | | | | | | | * 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>
* sched: INIT_PREEMPT_COUNTPeter Zijlstra2009-07-101-3/+1
| | | | | | | | | | | | | | | | | | | | | Pull the initial preempt_count value into a single definition site. Maintainers for: alpha, ia64 and m68k, please have a look, your arch code is funny. The header magic is a bit odd, but similar to the KERNEL_DS one, CPP waits with expanding these macros until the INIT_THREAD_INFO macro itself is expanded, which is in arch/*/kernel/init_task.c where we've already included sched.h so we're good. Cc: tony.luck@intel.com Cc: rth@twiddle.net Cc: geert@linux-m68k.org Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* microblaze: Fix cast warning for init.cMichal Simek2009-07-061-3/+3
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Wire up new syscallsMichal Simek2009-07-062-1/+5
| | | | | | Wire up new syscalls rt_tgsigqueueinfo and perf_counter_open. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: use generic syscalls.hArnd Bergmann2009-07-066-62/+28
| | | | | | | | | 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>
* microblaze: clean up signal handlingArnd Bergmann2009-07-067-345/+43
| | | | | | | | | | | | | | | 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>
* microblaze: convert all simple headers to use asm-genericRemis Lima Baima2009-07-0619-266/+21
| | | | | | | | | | | | | | All the simple microblaze header files were adapted to use their asm-generic implementations. These files are more simple and were quite straightforward to change. fb.h, vga.h and parport.h previously did not exist, using the generic version makes it possible to build more drivers successfully in allyesonfig. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: use the generic lib/checksum.cRemis Lima Baima2009-07-064-241/+6
| | | | | | | | The microblaze checksum code is mostly identical to the asm-generic+lib version, so use that instead. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: fall back on generic header files for the ABIArnd Bergmann2009-07-0617-887/+16
| | | | | | | | | Almost all of the ABI relevant header files now have generic versions, so use those now in order to reduce the amount of architecture specific code. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
* Move FAULT_FLAG_xyz into handle_mm_fault() callersLinus Torvalds2009-06-211-1/+1
| | | | | | | | | | This allows the callers to now pass down the full set of FAULT_FLAG_xyz flags to handle_mm_fault(). All callers have been (mechanically) converted to the new calling convention, there's almost certainly room for architectures to clean up their code and then add FAULT_FLAG_RETRY when that support is added. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* microblaze: Add missing symbols for CONSTRUCTORS supportMichal Simek2009-06-201-5/+6
| | | | | | | | | Commit b99b87f70c7785ab1e253c6220f4b0b57ce3a7f7 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>
* microblaze: remove init_mmArnd Bergmann2009-06-201-2/+0
| | | | | | | | | | 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>
* kmap_types: make most arches use generic header fileRandy Dunlap2009-06-161-24/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert most arches to use asm-generic/kmap_types.h. Move the KM_FENCE_ macro additions into asm-generic/kmap_types.h, controlled by __WITH_KM_FENCE from each arch's kmap_types.h file. Would be nice to be able to add custom KM_types per arch, but I don't yet see a nice, clean way to do that. Built on x86_64, i386, mips, sparc, alpha(tonyb), powerpc(tonyb), and 68k(tonyb). Note: avr32 should be able to remove KM_PTE2 (since it's not used) and then just use the generic kmap_types.h file. Get avr32 maintainer approval. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: <linux-arch@vger.kernel.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Bryan Wu <cooloney@kernel.org> Cc: Mikael Starvik <starvik@axis.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: "Luck Tony" <tony.luck@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2009-06-125-4/+5
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: add generic lib/checksum.c asm-generic: add a generic uaccess.h asm-generic: add generic NOMMU versions of some headers asm-generic: add generic atomic.h and io.h asm-generic: add legacy I/O header files asm-generic: add generic versions of common headers asm-generic: make bitops.h usable asm-generic: make pci.h usable directly asm-generic: make get_rtc_time overridable asm-generic: rename page.h and uaccess.h asm-generic: rename atomic.h to atomic-long.h asm-generic: add a generic unistd.h asm-generic: add generic ABI headers asm-generic: add generic sysv ipc headers asm-generic: introduce asm/bitsperlong.h asm-generic: rename termios.h, signal.h and mman.h
| * asm-generic: rename page.h and uaccess.hArnd Bergmann2009-06-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | The current asm-generic/page.h only contains the get_order function, and asm-generic/uaccess.h only implements unaligned accesses. This renames the file to getorder.h and uaccess-unaligned.h to make room for new page.h and uaccess.h file that will be usable by all simple (e.g. nommu) architectures. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * asm-generic: rename atomic.h to atomic-long.hArnd Bergmann2009-06-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | The existing asm-generic/atomic.h only defines the atomic_long type. This renames it to atomic-long.h so we have a place to add a truly generic atomic.h that can be used on all non-SMP systems. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Ingo Molnar <mingo@elte.hu>
| * asm-generic: introduce asm/bitsperlong.hArnd Bergmann2009-06-111-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This provides a reliable way for asm-generic/types.h and other files to find out if it is running on a 32 or 64 bit platform. We cannot use CONFIG_64BIT for this in headers that are included from user space because CONFIG symbols are not available there. We also cannot do it inside of asm/types.h because some headers need the word size but cannot include types.h. The solution is to introduce a new header <asm/bitsperlong.h> that defines both __BITS_PER_LONG for user space and BITS_PER_LONG for usage in the kernel. The asm-generic version falls back to 32 bit unless the architecture overrides it, which I did for all 64 bit platforms. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * asm-generic: rename termios.h, signal.h and mman.hArnd Bergmann2009-06-112-2/+2
| | | | | | | | | | | | | | | | | | | | The existing asm-generic versions are incomplete and included by some architectures. New architectures should be able to use a generic version, so rename the existing files and change all users, which lets us add the new files. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | microblaze: Don't use access_ok for unalignedJohn Williams2009-06-021-1/+2
| | | | | | | | | | | | | | | | | | | | | | it assumes we have an unaligned exception handler which (a) may not be true (b) costs a lot of performance Instead we'll use struct/union method for big endian accesses, and byte-shifting for little endian. Signed-off-by: John Williams <john.williams@petalogix.com>
* | microblaze: remove unused flat_stack_align() definitionAndrew Morton2009-06-021-1/+0
| | | | | | | | | | Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Michal Simek <monstr@monstr.eu>
* | microblaze: Fix problem with early_printk in startupMichal Simek2009-05-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | microblaze_mmu_v2: MakefilesMichal Simek2009-05-265-1/+11
| | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* | microblaze_mmu_v2: Kconfig updateMichal Simek2009-05-261-3/+109
| | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* | microblaze_mmu_v2: stat.h MMU updateMichal Simek2009-05-261-41/+36
| | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>