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| | * | microblaze: Add PVR for Microblaze v8.10.aMichal Simek2011-03-09
| | | | | | | | | | | | | | | | | | | | | | | | Microblaze v8.10.a has 0x14 version string. Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * | microblaze: Label MB 7.20.d as broken with WB cacheMichal Simek2011-03-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | MB version 7.20.d contains fault which is related with WB that's why error message will be shown. Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * | microblaze: Do not use "la" pseudo instruction - use addik insteadMichal Simek2011-03-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | "la" pseudo instruction is only translation to "addik". Use directly "addik" which is described in the MB reference guide. Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * | microblaze: Remove r0_ram pointer and PTO alignmentMichal Simek2011-03-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | r0_ram pool was used for saving/restoring register content if hw exception happen. This poll was replaced by pt_pool_space with PT_SIZE size. Based on this change SAVE_STATE_ARG_SPACE was removed which caused that PTO offset is zero that's why is also removed. r0_ram space was used as scratchpad by v850. In early Microblaze Linux developing phase was this part of code blindly copied. Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * | microblaze: Do not use r0_ram space for syscall debuggingMichal Simek2011-03-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove syscall counting space from r0_ram. Use special syscall_debug_table pool for syscall statistic. Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * | microblaze: Optimize BE/LE bootup detectingMichal Simek2011-03-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Save 0x1 word to rodata section and remove online value loading if DTB is passed from bootloader. It saves two asm instructions in bootup. Signed-off-by: Michal Simek <monstr@monstr.eu>
| | * | microblaze: Do not use r0_ram space for hw exception debuggingMichal Simek2011-03-09
| | |/ | | | | | | | | | | | | | | | | | | Remove hw exception counting space from r0_ram. Use special exception_debug_table poll for exception statistic. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | Merge branch 'linus' into x86/platformThomas Gleixner2011-02-23
| |\| | | | | | | | | | | | | | | | | | | | | | | | | Reason: Import mainline device tree changes on which further patches depend on or conflict. Trivial conflict in: drivers/spi/pxa2xx_spi_pci.c Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | of/pci: move of_irq_map_pci() into generic codeSebastian Andrzej Siewior2011-02-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a tiny difference between PPC32 and PPC64. Microblaze uses the PPC32 variant. Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> [grant.likely@secretlab.ca: Added comment to #endif, moved documentation block to function implementation, fixed for non ppc and microblaze compiles] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | microblaze: convert to clocksource_register_hz/khzJohn Stultz2011-02-21
| |/ |/| | | | | | | | | | | | | | | This converts the microblaze clocksources to use clocksource_register_hz/khz CC: Michal Simek <monstr@monstr.eu> CC: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michal Simek <monstr@monstr.eu> Signed-off-by: John Stultz <johnstul@us.ibm.com>
* | 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 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 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>
* 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: 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>
| * 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>
* | 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>
* 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>
* 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: 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: 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 additional compatible propertiesMichal Simek2010-10-21
| | | | | | | | | | | | | | Device-tree BSP generates longer compatible properties that's why we can remove extra/old one. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Remove hardcoded asm instraction for PVR loadingMichal Simek2010-10-21
| | | | | | | | | | | | It comes from past where pvr wasn't supported in msr instruction. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Use static const char * const where possibleJoe Perches2010-10-21
| | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Export missing symbols for modulesMichal Simek2010-10-21
| | | | | | | | | | | | | | Several kernel modules requires empty_zero_page and mbc to be exported. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Add libgcc function directly to kernelMichal Simek2010-10-21
| | | | | | | | | | | | Replaced libgcc functions with asm optimized implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: wire up prlimit64 and fanotify* syscallsMichal Simek2010-10-21
| | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Add new microblaze versionsMichal Simek2010-10-21
| | | | | | | | | | | | PVR for 7.30.b, 8.00.a versions. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: remove OUTPUT_FORMAT from linker scriptMichal Simek2010-10-21
| | | | | | | | | | | | | | OUTPUT_FORMAT setup bigendian platform. Microblaze Linux port is becoming bi endian that's why it is removed. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Fix r16 and r17 reg savingMichal Simek2010-10-21
| | | | | | | | | | | | r16 and r17 should be saved across interrupt and exception handling. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Report if only one timer is usedMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | Kernel needs two timers because of clocksource and clockevent. It is better to show warning message directly on early console if available. If it isn't available kernel log buffer contains it. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Clear return value in pt_regsMichal Simek2010-10-21
| | | | | | | | | | | | | | | | Signal code uses r3 value which saved in restore_sigcontext to rt_sigframe but it require to be zeroed. If is not zero rt_sigframe contains wrong values. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Fix sys_rt_sigreturn_wrapperMichal Simek2010-10-21
| | | | | | | | | | | | | | | | Do not save return registers before rt_sigreturn is called. _user_exception(syscall handler) already setup return address that's why it is removed from rt_sigreturn_wrapper. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Remove old user debugging gdb stubMichal Simek2010-10-21
| | | | | | | | | | | | | | | | Old gdb uses priviledged exception handler to handle gdb exception. New gdb uses brki r16, 0x18 that's why we can remove old gdb support. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: kgdb: Remove unused variable and fix return valueMichal Simek2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | | | I forget to remove unused variable from kgdb_arch_handle_exception. Fix return value in microblaze_kgdb_break function. Error log: arch/microblaze/kernel/kgdb.c: In function 'microblaze_kgdb_break': arch/microblaze/kernel/kgdb.c:83: warning: 'return' with a value, in function returning void arch/microblaze/kernel/kgdb.c: In function 'kgdb_arch_handle_exception': arch/microblaze/kernel/kgdb.c:119: warning: unused variable 'cpu' Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Remove pr_<level> uses of KERN_<level>Joe Perches2010-10-21
| | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* | of/flattree: Eliminate need to provide early_init_dt_scan_chosen_archGrant Likely2010-10-21
|/ | | | | | | | | | | | | | This patch refactors the early init parsing of the chosen node so that architectures aren't forced to provide an empty implementation of early_init_dt_scan_chosen_arch. Instead, if an architecture wants to do something different, it can either use a wrapper function around early_init_dt_scan_chosen(), or it can replace it altogether. This patch was written in preparation to adding device tree support to both x86 ad MIPS. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: David Daney <ddaney@caviumnetworks.com>
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