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2009-09-16Blackfin: catch hardware errors earlier during bootingRobin Getz
Allow hardware errors to be caught during early portions of booting, and leave something in the shadow console that people can use to debug their system with (to be printed out by the bootloader on next reset). This enables the hardare error interrupts in head.S, allowing us to find hardware errors when they happen (well, as much as you can with a hardware error) and prints out the trace if it is enabled. This will catch errors (like booting the wrong image on a 533) which previously resulted in a infinite loop/hang, as well as random hardware errors before before setup_arch(). To disable this debug only feature - turn off EARLY_PRINTK. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: add an early shadow consoleRobin Getz
Add a memory based shadow console to keep a copy of the printk buffer in a location which can be found externally. This allows bootloaders to locate and utilize the log buffer in case of silent (early/resume/etc...) crashes. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: add support for common FDPIC ptrace requestsMike Frysinger
The FDPIC arches support a standard set of ptrace requests so rather than define our own custom API, hook up those requests for common code to leverage. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: push SRAM locks down into related ifdefsMike Frysinger
Rather than defining the locks and initializing them all the time, only do so when we actually need them (i.e. the SRAM regions exist). This avoids dead data and code bloat during runtime. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: unify duplicated SMP checks in L2 cache kconfigSonic Zhang
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: rename PCF8574 driver configMichael Hennerich
The "TWI_KEYPAD" driver was renamed to "INPUT_PCF8574", so update the defines in the board resources accordingly. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: clean up early memory setup codeRobin Getz
Remove code duplication, and only print out memory warnings when they are an actual problem. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: fix module reloc handling for all memory regionsMike Frysinger
The current module relocation code has spotty handling wrt different memory regions (like L1 instruction). Rather than try to fix each little spot, use the new common memory functions to greatly simplify everything and make sure it is always correct. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: cleanup module section checkingMike Frysinger
The current module section handling code has a lot of verbose statements copied and pasted throughout which makes it pretty hard to digest at a glance. By unifying all of these up front, it is a lot easier to quickly get an idea of what is actually going on. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: convert malloc()/memset() to zalloc() in module codeMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: cleanup printk() usage in module codeMike Frysinger
Convert all printk() statements to use the common pr_xxx() funcs and use the new pr_fmt() function to standardize all of the output. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: reject outdated/unused/wrong relocation typesRobin Getz
All kernel modules are required to be built with -mlong-calls and thus should not generate any of these relocations. If they do, it means the module has not been compiled properly, so rather than trying to handle them (and running into random run time errors) just error out on module load to force the module to be compiled correctly. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: convert ptrace to new memory functionsMike Frysinger
Now that we have a Blackfin memory function to figure out how to properly access the different regions, drop the custom memory range checks in our ptrace code and use that. It makes the code nicer and fixes bugs where the ptrace logic wasn't handling all the different regions. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: cleanup traps decode_address() a bitMike Frysinger
Unify the address display to shrink the code, and add missing decoding of a few special Blackfin-specific regions (L1 ROM and MMRs). Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: inline I-pipe bypass code in ret_from_exceptionPhilippe Gerum
Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: sanitize manual control of IPEND[4]Philippe Gerum
Cleanup is performed in two ways: - remove extraneous updates of IPEND[4] w/ CONFIG_IPIPE, and document remaining use. - substitute pop-reg-from-stack instructions with plain SP fixups in all save-RETI-then-discard patterns. Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: document __ipipe_call_irqtailPhilippe Gerum
Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: allow EVT5 to preempt irqtail prologue (CONFIG_DEBUG_HWERR)Philippe Gerum
Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: reuse evt_evt14 handler to perform irqtail epiloguePhilippe Gerum
Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: use generic name for EVT14 handlerPhilippe Gerum
The purpose of the EVT14 handler may depend on whether CONFIG_IPIPE is enabled, albeit its implementation can be the same in both cases. When the interrupt pipeline is enabled, EVT14 can be used to raise the core priority level for the running code; when CONFIG_IPIPE is off, EVT14 can be used to lower this level before running softirq handlers. Rename evt14_softirq to evt_evt14 to pick an identifier that fits both, which allows to reuse the same vector setup code as well. Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: allow high priority domains to preempt schedule_tail()Philippe Gerum
ret_from_fork is always entered with hw interrupts off, which prevents real-time domains to preempt the Linux kernel during part of the initial context switch to the new task, which could in turn raise the worst-case latency figures. To avoid this, stall the root domain stage in the interrupt pipeline to keep the scheduling tail code free from Linux-handled IRQs, then enable hardware interrupts again. Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: export show_stack() to modulesPhilippe Gerum
Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: fix misnomer of some I-pipe helpersPhilippe Gerum
__ipipe_{stall, unstall}_root_raw() identifiers may leave the reader under the impression that only the virtual state is affected by these operations, which is wrong. Pick names following the convention used throughout the interrupt pipeline code. Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: checkpatch --file arch/blackfin/kernel/ipipe.cPhilippe Gerum
Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: make EVT3->EVT5 lowering more robust wrt IPEND[4]Robin Getz
We handle many exceptions at EVT5 (hardware error level) so that we can catch exceptions in our exception handling code. Today - if the global interrupt enable bit (IPEND[4]) is set (interrupts disabled) our trap handling code goes into a infinite loop, since we need interrupts to be on to defer things to EVT5. Normal kernel code should not trigger this for any reason as IPEND[4] gets cleared early (when doing an interrupt context save) and the kernel stack there should be sane (or something much worse is happening in the system). But there have been a few times where this has happened, so this change makes sure we dump a proper crash message even when things have gone south. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: bf537-stamp: add resources for AD1938 audio cardBarry Song
Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: bf537-stamp: declare SPI IRQ resourcesYi Li
Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Blackfin: bf537-stamp: update ADP5588 header nameMichael Hennerich
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16Fix ia64 build breakage in head.SAnirban Sinha
The "cleanup console_print()" patch in commit 353f6dd2dec992ddd34620a94b051b0f76227379 introduced an "extern" declaration into an assembly language file. Remove it. Signed-off-by: Anirban Sinha <asinha@zeugmasystems.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-16Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (75 commits) PCI hotplug: clean up acpi_run_hpp() PCI hotplug: acpiphp: use generic pci_configure_slot() PCI hotplug: shpchp: use generic pci_configure_slot() PCI hotplug: pciehp: use generic pci_configure_slot() PCI hotplug: add pci_configure_slot() PCI hotplug: clean up acpi_get_hp_params_from_firmware() interface PCI hotplug: acpiphp: don't cache hotplug_params in acpiphp_bridge PCI hotplug: acpiphp: remove superfluous _HPP/_HPX evaluation PCI: Clear saved_state after the state has been restored PCI PM: Return error codes from pci_pm_resume() PCI: use dev_printk in quirk messages PCI / PCIe portdrv: Fix pcie_portdrv_slot_reset() PCI Hotplug: convert acpi_pci_detect_ejectable() to take an acpi_handle PCI Hotplug: acpiphp: find bridges the easy way PCI: pcie portdrv: remove unused variable PCI / ACPI PM: Propagate wake-up enable for devices w/o ACPI support ACPI PM: Replace wakeup.prepared with reference counter PCI PM: Introduce device flag wakeup_prepared PCI / ACPI PM: Rework some debug messages PCI PM: Simplify PCI wake-up code ... Fixed up conflict in arch/powerpc/kernel/pci_64.c due to OF device tree scanning having been moved and merged for the 32- and 64-bit cases. The 'needs_freset' initialization added in 6e19314cc ("PCI/powerpc: support PCIe fundamental reset") is now in arch/powerpc/kernel/pci_of_scan.c.
2009-09-16x86, EDAC: Provide function to return NodeId of a CPUAndreas Herrmann
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Acked-by: H. Peter Anvin <hpa@zytor.com>
2009-09-16m68knommu: Make PAGE_SIZE available to assembly files.Tim Abbott
Signed-off-by: Tim Abbott <tabbott@ksplice.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: fix ColdFire definition of CLOCK_TICK_RATEPhilippe De Muyter
The good definition of CLOCK_TICK_RATE for coldfires has been lost in the merge of m68k and m68knommu include files. Restore it. Culprit : commit ebafc17468d58bd903c886175ca84a4edc69ae1d Signed-off-by: Philippe De Muyter <phdm@macqel.be> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: set multi-function pins for ethernet when enabledGreg Ungerer
The ethernet pins on the 532x ColdFire CPU family are multi-function pins. We need to enable them as ethernet pins when using the FEC ethernet driver. Bug report, and older patch, from timothee@manaud.net. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: remove special interrupt handling code for ne2k supportGreg Ungerer
The improved interrupt support for ColdFire CPU cores means we no longer need all the interrupt setup and ack hacks to support the NE2000 driver on ColdFire platforms. Remove all that code. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: relax IO_SPACE_LIMIT settingGreg Ungerer
There is really no limit to the addresses which can be used by the in*() and out*() family of IO space calls in m68k non-MMU environments. So don't impose an artificial address limit, allow the full 32bit range. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: remove ColdFire direct interrupt register accessGreg Ungerer
Now that the ColdFire 5272 has full interrupt controller functionality we can remove all the interrupt masking and acking code from the FEC ethernet driver. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: create a speciailized ColdFire 5272 interrupt controllerGreg Ungerer
The ColdFire 5272 CPU has a very different interrupt controller than any of the other ColdFire parts. It needs its own controller code to correctly setup and ack interrupts. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: add support for second interrupt controller of ColdFire 5249Greg Ungerer
The ColdFire 5249 CPU has a second (compleletly different) interrupt controller. It is the only ColdFire CPU that has this type. It controlls GPIO interrupts amongst a number of interrupts from other internal peripherals. Add support code for it. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: clean up old ColdFire timer irq setupGreg Ungerer
The recent changes to the old ColdFire interrupt controller code means we no longer need to manually unmask the timer interrupt. That is now done in the interrupt controller code proper. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: map ColdFire interrupts to correct masking bitsGreg Ungerer
The older simple ColdFire interrupt controller has no one-to-one mapping of interrupt numbers to bits in the interrupt mask register. Create a mapping array that each ColdFire CPU type can populate with its available interrupts and the bits that each use in the interrupt mask register. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: clean up ColdFire 532x CPU timer setupGreg Ungerer
The newer ColdFire 532x family of CPU's uses the old timer, but has a newer interrupt controller. It doesn't need the special timer setup that was required when using the older interrupt controller. Remove the dead timer irq and level setting code, and define the hard coded vector. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: simplify ColdFire "timers" clock initializationGreg Ungerer
The ColdFire "timers" clock setup can be simplified. There is really no need for the flexible per-platform setup code. The clock interrupt can be hard defined per CPU platform (in CPU include files). This makes the actual timer code simpler. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: support code to mask external interrupts on old ColdFire CPU'sGreg Ungerer
The external interrupts used on the old Coldfire parts with the old style interrupt controller can be properly mask/unmasked in the interrupt handling code. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: merge old ColdFire interrupt controller masking macrosGreg Ungerer
Currently the code that supports setting the old style ColdFire interrupt controller mask registers is macros in the include files of each of the CPU types. Merge all these into a set of real masking functions in the old Coldfire interrupt controller code proper. All the macros are basically the same (excepting a register size difference on really early parts). Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: remove duplicate ColdFire mcf_autovector() codeGreg Ungerer
Each of the ColdFire CPU platform code that used the old style interrupt controller had its own copy of the mcf_autovector() function. They are all the same, remove them all and create a single function in the common coldfire/intc.c code. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: move ColdFire INTC definitions to new include fileGreg Ungerer
Create an mcfintc.h include file with the definitions for the old style ColdFire interrupt controller. They are only needed on CPU's that use this old controller - so isolate them on their own. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: mask off all interrupts in ColdFire intc-simr controllerGreg Ungerer
The ColdFire intc-simr interrupt controller should mask off all interrupt sources at init time. Doing it here instead of separately in each platform setup. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: remove timer device interrupt setup for ColdFire 532xGreg Ungerer
With fully implemented interrupt controller code we don't need to do the custom interrupt setup for the timer device of the ColdFire 532x. Remove that code. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-09-16m68knommu: remove interrupt masking from ColdFire pit timerGreg Ungerer
With proper interrupt controller code in place there is no need for devices like the timers to have custom interrupt masking code. Remove it (and the defines that go along with it). Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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