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* microblaze: Fix msr instruction detectionMichal Simek2011-02-07
| | | | | | | | | | | Fix msr instructions detection. The current code just use msrclr for loading msr content and compare it with proper MSR content. If msrclr is not implemented r8 contains pc address. Previous code wanted to use MSR carry bit but if msrclr wasn't implemented carry wasn't cleared. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix pte_update functionMichal Simek2011-02-07
| | | | | | | | Do not disable irq in asm but use irq macros. Systems with MSR=0 couldn't use pte_update function because msrclr was hardcoded. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix asm compilation warningMichal Simek2011-02-07
| | | | | | | | | Microblaze ASM doesn't support hex values for mfs instructions. /tmp/ccwiXVmt.s: Assembler messages: /tmp/ccwiXVmt.s:19: Warning: ignoring operands: x00 Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix IRQ flag handling for MSR=0Michal Simek2011-02-07
| | | | | | | | Patch: Fix IRQ flag handling naming (sha1: f9ee29270c11dba7d0fe0b83ce47a4d8e8d2101) introduced problem on system with MSR=0. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix ASM optimized code for LEMichal Simek2011-01-28
| | | | | | | | | | Microblaze little-endian doesn't support ASM optimized library functions(memcpy/memmove). Kconfig doens't contain any information about endian that's why it is necessary to check it in the source code. The code is used with barrel shifter is used. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix unaligned issue on MMU system with BS=0 DIV=1Michal Simek2011-01-28
| | | | | | | | | | | | | | | | | Unaligned code use shift for finding register operand. There is used BSRLI(r8,r8,2) macro which is expand for BS=0, DIV=1 by ori rD, r0, (1 << imm); \ idivu rD, rD, rA but if rD is equal rA then ori instruction rewrite value which should be devide. The patch remove this macro which use idivu instruction because idivu takes 32/34 cycles. The highest shifting is 20 which takes 20 cycles. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix DTB passing from bootloaderMichal Simek2011-01-28
| | | | | | | | | | | | | Little endian system needs to check OF_DT_HEADER but it is swapped because it is in big-endian. Microblaze LE provides lwr instruction which loads magic number in BIG endian format which can be compared. There is used the fact that if you write 0x1 as word and load it as byte then you get for big-endian zero and 1 for little-endian. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Use generic irq KconfigThomas Gleixner2011-01-21
| | | | | | | No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michal Simek <monstr@monstr.eu>
* genirq: Remove __do_IRQThomas Gleixner2011-01-21
| | | | | | | | | | | | | | | | | | | All architectures are finally converted. Remove the cruft. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Mike Frysinger <vapier@gentoo.org> Cc: David Howells <dhowells@redhat.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Michal Simek <monstr@monstr.eu> Acked-by: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Jeff Dike <jdike@addtoit.com>
* kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERTDavid Rientjes2011-01-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The meaning of CONFIG_EMBEDDED has long since been obsoleted; the option is used to configure any non-standard kernel with a much larger scope than only small devices. This patch renames the option to CONFIG_EXPERT in init/Kconfig and fixes references to the option throughout the kernel. A new CONFIG_EMBEDDED option is added that automatically selects CONFIG_EXPERT when enabled and can be used in the future to isolate options that should only be considered for embedded systems (RISC architectures, SLOB, etc). Calling the option "EXPERT" more accurately represents its intention: only expert users who understand the impact of the configuration changes they are making should enable it. Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: David Woodhouse <david.woodhouse@intel.com> Signed-off-by: David Rientjes <rientjes@google.com> Cc: Greg KH <gregkh@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jens Axboe <axboe@kernel.dk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Robin Holt <holt@sgi.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds2011-01-18
|\ | | | | | | | | | | * 'next' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Fix asm/pgtable.h microblaze: Fix missing pagemap.h
| * microblaze: Fix asm/pgtable.hMichal Simek2011-01-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Function ptep_test_and_clear_young have had wrong the first argument. It is also necessary to add __HAVE macros for ptep_test_and_clear_young and ptep_get_and_clear functions. Error log: In file included from linux/arch/microblaze/include/asm/pgtable.h:570, from arch/microblaze/mm/pgtable.c:35: include/asm-generic/pgtable.h:23: error: conflicting types for 'ptep_test_and_clear_young' linux/arch/microblaze/include/asm/pgtable.h:449: error: previous definition of 'ptep_test_and_clear_young' was here include/asm-generic/pgtable.h:73: error: redefinition of 'ptep_get_and_clear' linux/arch/microblaze/include/asm/pgtable.h:462: error: previous definition of 'ptep_get_and_clear' was here Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Fix missing pagemap.hMichal Simek2011-01-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing linux/pagemap.h to solve compilation error. Error log: In file included from linux/arch/microblaze/include/asm/tlb.h:17, from mm/pgtable-generic.c:9: include/asm-generic/tlb.h: In function 'tlb_flush_mmu': include/asm-generic/tlb.h:76: error: implicit declaration of function 'release_pages' include/asm-generic/tlb.h: In function 'tlb_remove_page': include/asm-generic/tlb.h:105: error: implicit declaration of function 'page_cache_release' Signed-off-by: Michal Simek <monstr@monstr.eu>
* | dt/flattree: Return virtual address from early_init_dt_alloc_memory_arch()Grant Likely2011-01-16
|/ | | | | | | | The physical address is never used by the device tree code when allocating memory for unflattening. Change the architecture's alloc hook to return the virutal address instead. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds2011-01-11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'next' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: remove obsolete DEBUG_BOOTMEM microblaze: trivial: Fix removed the part of line microblaze: Fix __muldi3 function for little-endian. microblaze: Clear i/dcache for sw breakpoints microblaze: Remove useless early_init_dt_check_for_initrd microblaze: Fix unaligned exception for little endian platform microblaze: Add PVR for Microblaze v8.00.b microblaze: Correct PVR access macros Revert "microblaze: Simplify syscall rutine" microblaze: Fix initramfs arch/microblaze: Remove unnecessary semicolons
| * microblaze: remove obsolete DEBUG_BOOTMEMAmerigo Wang2011-01-10
| | | | | | | | | | | | | | | | "git grep" shows this is the last piece of code using DEBUG_BOOTMEM, so remove it. Signed-off-by: WANG Cong <amwang@redhat.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: trivial: Fix removed the part of lineMichal Simek2011-01-03
| | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Fix __muldi3 function for little-endian.Michal Simek2011-01-03
| | | | | | | | | | | | | | | | | | __muldi3 was written for big endian platforms. Code contained half word read/write instructions which are not compatible with little endian cpu. Asm __muldi3 implementation is replaced by C version. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Clear i/dcache for sw breakpointsMichal Simek2011-01-03
| | | | | | | | | | | | | | | | | | | | There is necessary to flush dcache and invalidate icache for address where breakpoint (brki r16, 0x18) was. The reason is that for some cases icache line still keeps brki instruction and it is not updated by origin instruction maintains by gdbserver. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Remove useless early_init_dt_check_for_initrdMichal Simek2011-01-03
| | | | | | | | | | | | | | Remove copy&paste error. Microblaze doesn't support initrd. Signed-off-by: Walter Goossens <waltergoossens@home.nl> Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Fix unaligned exception for little endian platformMichal Simek2011-01-03
| | | | | | | | | | | | Half word unaligned accesses need to be fixed. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Add PVR for Microblaze v8.00.bMichal Simek2011-01-03
| | | | | | | | | | | | Microblaze v8.00.b have 0x13 version string. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Correct PVR access macrosroel kluin2011-01-03
| | | | | | | | | | | | | | | | | | | | | | | | | | A definition like: called with PVR_IS_FULL(foo) will be preprocessed to: (foo.foo[0] & PVR0_PVR_FULL_MASK) ^^^ So to fix this and ensure the preprocessor compiles calls correctly: Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
| * Revert "microblaze: Simplify syscall rutine"Michal Simek2010-11-18
| | | | | | | | | | | | | | | | | | This reverts commit 0e41c90908881a1b8205c66a66becec7d8d4eb4a. Break jffs2 rootfs because the patch removes syscall calling from kernel space. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Fix initramfsMichal Simek2010-11-18
| | | | | | | | | | | | | | | | Patch: initramfs: generalize initramfs_data.xxx.S variants (sha1 6ae64e428f74e7bacab898ef9665dda719ea6fde) requires hooks in linker script. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * arch/microblaze: Remove unnecessary semicolonsJoe Perches2010-11-15
| | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* | of/flattree: Add Kconfig for EARLY_FLATTREEStephen Neuendorffer2010-12-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The device tree code is now in two pieces: some which can be used generically on any platform which selects CONFIG_OF_FLATTREE, and some early which is used at boot time on only a few architectures. This patch segregates the early code so that only those architectures which care about it need compile it. This also means that some of the requirements in the early code (such as a cmd_line variable) that most architectures (e.g. X86) don't provide can be ignored. Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> [grant.likely@secretlab.ca: remove extra blank line addition] [grant.likely@secretlab.ca: fixed incorrect #ifdef CONFIG_EARLY_FLATTREE check] [grant.likely@secretlab.ca: Made OF_EARLY_FLATTREE select instead of depend on OF_FLATTREE] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | microblaze/of: Use generic rule to build dtb'sDirk Brandewie2010-12-23
| | | | | | | | | | | | | | | | Modify arch/powerpc/boot/Makefile to use dtc command in scripts/Makefile.lib Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | of/net: Move of_get_mac_address() to a common source file.David Daney2010-11-01
|/ | | | | | | | | | | | There are two identical implementations of of_get_mac_address(), one each in arch/powerpc/kernel/prom_parse.c and arch/microblaze/kernel/prom_parse.c. Move this function to a new common file of_net.{c,h} and adjust all the callers to include the new header. Signed-off-by: David Daney <ddaney@caviumnetworks.com> [grant.likely@secretlab.ca: protect header with #ifdef] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* Merge branch 'kconfig' of ↵Linus Torvalds2010-10-28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 * 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: (38 commits) kbuild: convert `arch/tile' to the kconfig mainmenu upgrade README: cite nconfig Revert "kconfig: Temporarily disable dependency warnings" kconfig: Use PATH_MAX instead of 128 for path buffer sizes. kconfig: Fix realloc usage() kconfig: Propagate const kconfig: Don't go out from read config loop when you read new symbol kconfig: fix menuconfig on debian lenny kbuild: migrate all arch to the kconfig mainmenu upgrade kconfig: expand file names kconfig: use the file's name of sourced file kconfig: constify file name kconfig: don't emit warning upon rootmenu's prompt redefinition kconfig: replace KERNELVERSION usage by the mainmenu's prompt kconfig: delay gconf window initialization kconfig: expand by default the rootmenu's prompt kconfig: add a symbol string expansion helper kconfig: regen parser kconfig: implement the `mainmenu' directive kconfig: allow PACKAGE to be defined on the compiler's command-line ... Fix up trivial conflict in arch/mn10300/Kconfig
| * Merge branch 'kbuild/rc-fixes' into kbuild/kconfigMichal Marek2010-10-12
| |\ | | | | | | | | | We need to revert the temporary hack in 71ebc01, hence the merge.
| * | kbuild: migrate all arch to the kconfig mainmenu upgradeArnaud Lacombe2010-09-19
| | | | | | | | | | | | | | | | | | Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Michal Marek <mmarek@suse.cz>
* | | ptrace: cleanup arch_ptrace() on microblazeNamhyung Kim2010-10-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remove checking @addr greater than 0 because @addr is now unsigned. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | ptrace: change signature of arch_ptrace()Namhyung Kim2010-10-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix up the arguments to arch_ptrace() to take account of the fact that @addr and @data are now unsigned long rather than long as of a preceding patch in this series. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: <linux-arch@vger.kernel.org> Acked-by: Roland McGrath <roland@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | mm: remove pte_*map_nested()Peter Zijlstra2010-10-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since we no longer need to provide KM_type, the whole pte_*map_nested() API is now redundant, remove it. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Cc: David Howells <dhowells@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Miller <davem@davemloft.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds2010-10-25
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'next' of git://git.monstr.eu/linux-2.6-microblaze: (42 commits) microblaze: Fix build with make 3.82 fbdev/xilinxfb: Microblaze driver support microblaze: Support C optimized lib functions for little-endian microblaze: Separate library optimized functions microblaze: Support timer on AXI lite microblaze: Add support for little-endian Microblaze microblaze: KGDB little endian support microblaze: Add PVR for endians plus detection net: emaclite: Add support for little-endian platforms microblaze: trivial: Add comment for AXI pvr microblaze: pci-common cleanup microblaze: Support early console on uart16550 microblaze: Do not compile early console support for uartlite if is disabled microblaze: Setup early console dynamically microblaze: Rename all uartlite early printk functions microblaze: remove early printk uarlite console dependency from header microblaze: Remove additional compatible properties microblaze: Remove hardcoded asm instraction for PVR loading microblaze: Use static const char * const where possible microblaze: Define VMALLOC_START/END ...
| * | | microblaze: Fix build with make 3.82Thomas Backlund2010-10-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When running make headers_install_all on x86_64 and make 3.82 I hit this: arch/microblaze/Makefile:80: *** mixed implicit and normal rules. Stop. make: *** [headers_install_all] Error 2 So split the rules to satisfy make 3.82. Signed-off-by: Thomas Backlund <tmb@mandriva.org> Cc: Stable <stable@kernel.org> Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | microblaze: Support C optimized lib functions for little-endianMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Optimized C library functions can rapidly speedup the kernel. memset doesn't need to be optimized because there is no difference in behavior on little/big endian cpu. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | microblaze: Separate library optimized functionsMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | memcpy/memmove/memset Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | microblaze: Support timer on AXI liteMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New microblaze systems uses two buses. One for memories and flashes and the second for low-speed peripherals which can run on different CLK. This is the reason why the kernel is trying to read clock-frequency directly from node. If there is then the kernel will work with it. If not then cpu CLK is used. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | microblaze: Add support for little-endian MicroblazeMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Microblaze little-endian toolchain exports __MICROBLAZEEL__ which is used in the kernel to identify little/big endian. The most of the changes are in loading values from DTB which is always big endian. Little endian platforms are based on new AXI bus which has impact to early uartlite initialization. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | microblaze: KGDB little endian supportMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Just need to use little-endian opcode for brki r16, 0x18 Signed-off-by: Michal Simek <monstr@monstr.eu> CC: Jason Wessel <jason.wessel@windriver.com>
| * | | microblaze: Add PVR for endians plus detectionMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Upcomming microblaze version will support little-endian. Signed-off-by: Michal Simek <monstr@monstr.eu> Acked-by: Grant Likely <grant.likely@secretlab.ca>
| * | | microblaze: trivial: Add comment for AXI pvrMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | AXI and OPB share some PVR macros. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | microblaze: pci-common cleanupNishanth Aravamudan2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use set_dma_ops and remove now used-once oddly named temp pointer sd. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | microblaze: Support early console on uart16550Michal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Early console support reuse setting from U-BOOT that's why it is not necessary to setup baudrates, etc. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | microblaze: Do not compile early console support for uartlite if is disabledMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kconfig blocks to select any other early console support that's why this patch has no real impact on current kernel version. But it is done because of uart16550. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | microblaze: Setup early console dynamicallyMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | Just setup pointer early console in run time. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | microblaze: Rename all uartlite early printk functionsMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | This is done because of uart16550 early printk support Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | microblaze: remove early printk uarlite console dependency from headerMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | This dependency is resolved in menuconfig. Signed-off-by: Michal Simek <monstr@monstr.eu>
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