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* [Blackfin] arch: Add the semtimedop syscall. Upstream uClibc doesn't ↵Bernd Schmidt2008-01-271-0/+1
| | | | | | | | compile without it. Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* [Blackfin] arch: Initial checkin of the memory protection support.Bernd Schmidt2008-01-271-0/+19
| | | | | | | | Enable it with CONFIG_MPU. Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* [Blackfin] arch: Add some comments - fix semicolonsMichael Hennerich2008-01-111-17/+15
| | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* [Blackfin] arch: move all code related to CPLB handling into a new ↵Bernd Schmidt2008-01-114-986/+1
| | | | | | | | subdirectory under kernel/ Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* [Blackfin] arch: Enable both edge triggered GPIO IRQs on BF54x and use ↵Michael Hennerich2007-12-241-21/+46
| | | | | | | | irq_to_gpio() Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* [Blackfin] arch: append IRQ Number to label stringMichael Hennerich2007-12-242-8/+19
| | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* [Blackfin] arch: Fix bug to Enable kernel to build for bf548 with PM.Sonic Zhang2007-12-232-8/+54
| | | | | | | | | On BF548-EZKIT, build kernel faills with power management, video and audio enabled. This patch fix this. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* [Blackfin] arch: Let the pre-processor do the math to save a few cycles - no ↵Robin Getz2007-12-211-3/+1
| | | | | | | | functional changes Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* [Blackfin] arch: do not use fixed numbers to describe offsets - no ↵Robin Getz2007-12-211-1/+1
| | | | | | | | functional changes Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* [Blackfin] arch: do not use hard coded addressesRobin Getz2007-12-211-4/+4
| | | | | | Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* [Blackfin] arch: fix bug - trap_tests fails to recover on some tests.Robin Getz2008-01-273-63/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3719 When the CPLBs get a miss, we do: - find a victim in the HW table - remove the victim - find the replacement in the software table - put it into the HW table. If we can't find a replacement in the software table, we accidently leave a duplicate in the HW table. This patch ensures that duplicate is marked as not valid. What we should do is find the replacement in the software table, before we find a victim in the HW table - but its too late in the release cycle to do that much restructuring of this code. Rather that duplicate code, connect Hardware Errors (irq5) into trap_c, so user space processes get killed properly. The rest of irq_panic() can be moved into traps.c (later) There is still a small corner case that causes problems when a pheriperal interrupt goes off a single cycle before a user space hardware error. This causes a kernel panic, rather than the user space process being killed. But, this checkin makes things work in 99.9% of the cases, and is a vast improvement from what is there today (which fails 100% of the time). Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* [Blackfin] arch: Add a note describing what is going on - no functional changesRobin Getz2008-01-271-2/+13
| | | | | | Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: split apart dump_bfin_regs and merge/remove show_regs from ↵Mike Frysinger2007-11-211-1/+3
| | | | | | | | process.c, which was largely duplicated Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: use common __INIT/__FINIT defines rather than setting the ↵Mike Frysinger2007-11-211-2/+3
| | | | | | | | .section ourselves to .init.text Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: Ensure we printk out strings with the proper loglevelRobin Getz2007-11-211-5/+5
| | | | | | Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: Need to specify ax with the .init.text section,Bernd Schmidt2007-11-211-1/+1
| | | | | Need to specify "ax" with the .init.text section, otherwise the linker will make unique .init.text.1 .. .init.text.3 sections to cope with the flags
* Blackfin arch: Fix typo, and add ENDPROC - no functional changesMike Frysinger2007-11-211-1/+2
| | | | | | Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: rename _return_from_exception to _bfin_return_from_exception ↵Mike Frysinger2007-11-211-4/+4
| | | | | | | | and export it Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: fix spurious newline in headerMike Frysinger2007-11-171-1/+1
| | | | | | Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: do not include linux/autoconf.hMike Frysinger2007-11-151-1/+0
| | | | | | Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: remove useless CONFIG_IRQCHIP_DEMUX_GPIOMike Frysinger2007-11-152-31/+18
| | | | | | | | since we have this always turned on now and dont want it off (and hasnt been an option in a while) Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: fix bug cplbmgr.S does not exit properly on error conditionRobin Getz2007-11-151-7/+18
| | | | | | | | | | | | https://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=1685 Ensure that cache/protection is turned back on when we get a fault, and ensure that the initial population of the CPLB tables are correct - that kernel is locked in CPLB tables Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: ensure we work around ANOMALY_05000261 for null pointersRobin Getz2007-11-121-9/+29
| | | | | | | | We currently do not. Also make it easier to handle cplb violations - in traps.c Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: ensure that speculative loads of bad pointers don't cause us ↵Robin Getz2007-10-291-1/+1
| | | | | | | | | | to do bad things. Fix/change formatting of a few more things. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: Optimization - no need to make additional math hereMichael Hennerich2007-10-211-3/+3
| | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: force irq_flags into the .data sectionMike Frysinger2007-10-222-2/+14
| | | | | | | | | | | | force irq_flags into the .data section by initializing it to the hardware masks that cannot be disabled. this way if we use irq enable/disable functions before the .bss has been zeroed out (as does our l1 relocate/dma functions), we dont hit a problem where bss contains bogus crap. Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: add new processor ADSP-BF52x arch/mach supportMichael Hennerich2007-10-211-10/+31
| | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* PM: Rework struct platform_suspend_opsRafael J. Wysocki2007-10-181-48/+5
| | | | | | | | | | | | | | | | | There is no reason why the .prepare() and .finish() methods in 'struct platform_suspend_ops' should take any arguments, since architectures don't use these methods' argument in any practically meaningful way (ie. either the target system sleep state is conveyed to the platform by .set_target(), or there is only one suspend state supported and it is indicated to the PM core by .valid(), or .prepare() and .finish() aren't defined at all).  There also is no reason why .finish() should return any result. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PM: Rename struct pm_ops and related thingsRafael J. Wysocki2007-10-181-2/+2
| | | | | | | | | | | | | | | | The name of 'struct pm_ops' suggests that it is related to the power management in general, but in fact it is only related to suspend.  Moreover, its name should indicate what this structure is used for, so it seems reasonable to change it to 'struct platform_suspend_ops'.  In that case, the name of the global variable of this type used by the PM core and the names of related functions should be changed accordingly. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PM: Move definition of struct pm_ops to suspend.hRafael J. Wysocki2007-10-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | Move the definition of 'struct pm_ops' and related functions from <linux/pm.h> to <linux/suspend.h> . There are, at least, the following reasons to do that: * 'struct pm_ops' is specifically related to suspend and not to the power management in general. * As long as 'struct pm_ops' is defined in <linux/pm.h>, any modification of it causes the entire kernel to be recompiled, which is unnecessary and annoying. * Some suspend-related features are already defined in <linux/suspend.h>, so it is logical to move the definition of 'struct pm_ops' into there. * 'struct hibernation_ops', being the hibernation-related counterpart of 'struct pm_ops', is defined in <linux/suspend.h> . Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin arch: the load address is not safe to point to as a workaround for ↵Robin Getz2007-10-101-4/+13
| | | | | | | | | | | ANOMALY 05000281 Now that we have moved head.S into the init section, the load address is not safe to point to as a workaround for ANOMALY 05000281 Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: Print out debug info, as early as possibleRobin Getz2007-10-091-2/+41
| | | | | | | | | | Print out debug info, as early as possible - even before the kernel initializes the interrupt vectors. Now we can print out debug messages almost anytime during the boot process. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: fix endless loop bug when a double fault happensRobin Getz2007-10-091-15/+54
| | | | | | | | | | | Today when a double fault happens (exception during an exception handling event), we go into an endless loop, with nothing comming out the UART. With this patch, we actually see that we have commited a double fault event Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: add an exception request/free apiMike Frysinger2007-08-051-20/+22
| | | | | | | | | | add an exception request/free api similar to the interrupt request/fre api so people can utilize the free software based exceptions for their own purposes Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: allow people to select the feature that is unavailable to the ↵Mike Frysinger2007-08-054-27/+31
| | | | | | | | | | | | | kernel - allow people to select the feature that is unavailable to the kernel: NMI, JTAG, or CYCLES. - change default NMI handler to simply dump hardware trace buffer. - remove default NMI handler completely as calling into kernel code is not safe move example handler to wiki so people dont haphazardly copy and paste this stuff thinking its safe Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: to do some consolidation of common code and common name spacesRobin Getz2007-10-105-11/+16
| | | | | | | | now all BLKFIN should be BFIN, should be no functional changes. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: remove unused code -- EVT0 is not controllable by softwareMike Frysinger2007-08-033-30/+0
| | | | | | Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: Add ability to expend the hardware trace bufferRobin Getz2007-07-251-0/+73
| | | | | | | | | | | | Add ability to expend the hardware trace buffer via a configurable software buffer - so you can have lots of history when a crash occurs. The interesting way we do printk in the traps.c confusese the checking script Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: Fix CCLK and SCLK checksRobin Getz2007-08-033-2/+57
| | | | | | | | | | Fix CCLK and SCLK checks, combine all arch checks into one file for maintance. Checkins that remove more lines than they add are always good. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: Add label to call new GPIO APIMichael Hennerich2007-07-242-6/+6
| | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: use HI/LO macros rather than masking the bit ranges ourselvesMike Frysinger2007-07-255-68/+68
| | | | | | Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: revise anomaly handling by basing things on the compiler not ↵Mike Frysinger2007-07-254-10/+10
| | | | | | | | | | | | | the kconfig defines revise anomaly handling by basing things on the compiler not the kconfig defines, so the header is stable and usable outside of the kernel. This also allows us to move some code from preprocessing to compiling (gcc culls dead code) which should help with code quality (readability, catch minor bugs, etc...). Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: add some missing syscallBryan Wu2007-09-231-4/+19
| | | | | | | | | | | When compiling the Blackfin kernel, checksyscalls.pl will report lots of missing syscalls warnings. This patch will add some missing syscalls which make sense on Blackfin arch After appling this patch, toolchain should be rebuilt. Then recompiling the kernel with the new toolchain. Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: Update/Fix PM support add new pm_ops validMichael Hennerich2007-08-271-0/+6
| | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: add error message when IRQ no availableMichael Hennerich2007-07-241-1/+5
| | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: Initialize the exception vectors early in the boot processBernd Schmidt2007-07-252-36/+45
| | | | | | | | | Initialize the exception vectors early in the boot process, so that CPLB faults can be handled when memory protection is enabled. Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: Load P0 before storing through itBernd Schmidt2007-07-241-0/+3
| | | | | | | | Fortunately this function is only used on old 533 revisions. Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: clean up some coding style issuesBryan Wu2007-07-122-9/+8
| | | | | Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: scrub dead codeMike Frysinger2007-07-121-34/+3
| | | | | | | | | we converted to using a system call for userspace spinlocks rather than a dedicated exception long ago Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Blackfin arch: Some memory and code optimizations - Fix SYS_IRQSMichael Hennerich2007-07-122-17/+28
| | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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