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2009-06-13Blackfin: add support for bzip2/lzma compressed kernel imagesMike Frysinger
Since U-Boot can support these compression types, add appropriate targets to the Blackfin boot files. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: convert Kconfig style to def_boolMike Frysinger
Makes the file easier to read when there isn't so much clutter. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: bf548-ezkit: update smsc911x resourcesMike Frysinger
The older smsc911x driver made platform data optional, but the newer one always requires it, so add proper settings to the BF548-EZKIT. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: update aedos-ipipe code to upstream 1.10-00Yi Li
Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: bf537-stamp: update ADP5520 resourcesMike Frysinger
The ADP5520 hooks up to PF7 rather than PG0. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: bf518f-ezbrd: fix SPI CS for SPI flashGraf Yang
The SPI flash on the BF518F-EZBRD board is actually hooked up to CS2, not CS1, so make sure the resources are correct. URL: http://blackfin.uclinux.org/gf/tracker/5220 Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: define SPI IRQ in board resourcesYi Li
The Blackfin SPI driver can be driven by an IRQ now, so declare it in the board resources. Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: do not configure the UART early if on wrong processorRobin Getz
Before we configure the early UART, check to make sure we are running on the expected processor - otherwise, we cause problems by configuring pins that don't exist (and causing an infinite loop of faults). Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: fix deadlock in SMP IPI handlerSonic Zhang
When a low priority interrupt (like ethernet) is triggered between 2 high priority IPI messages, a deadlock in disable_irq() is hit by the second IPI handler. This is because the second IPI message is queued within the first IPI handler, but the handler doesn't process all messages, and new ones are inserted rather than appended. So now we process all the pending messages, and append new ones to the pending list. URL: http://blackfin.uclinux.org/gf/tracker/5226 Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: fix flag storage for irq funcsMike Frysinger
The IRQ functions take an "unsigned long" flags variable, not any other type, so fix the places where we use "int" or "long". Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: push down exception oops checkingMike Frysinger
Rather than maintain a duplicate list of valid exceptions we can take in the kernel both in the first if() check and the switch() check, delay the oops check to after the switch(). All valid exceptions will have returned by this point leaving only the invalid ones. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: fix trap_c() exit pathsMike Frysinger
The trap_c() code pushes the hardware trace status onto the stack, but doesn't always restore it when returning from some trap code paths. So unify the exit code paths to all head to the end of the function. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: add blackfin_invalidate_entire_icache for SMP systemsSonic Zhang
The KGDB code uses this when switching processors to make sure the icache is in a valid state. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: include the cpu compiled version in /proc/cpuinfoRobin Getz
Since the compiled-for cpu revision can be significant, include it in the cpuinfo output along side the cpu revision we're currently running on. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: add support for GENERIC_BUGMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: rename bfin_addr_dcachable to bfin_addr_dcacheableJie Zhang
The latter naming convention is much more common. Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: export ip_compute_csum/csum_partial_copy_from_user symbolsMike Frysinger
All other arches do this, and some places like the net/scsi code will fail as modules without them. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-13Blackfin: only handle CPLB protection violations when MPU is enabledRobin Getz
We don't need to handle CPLB protection violations unless we are running with the MPU on. Fix the entry code to call common trap_c, and remove the code which is never run. This allows the traps test suite to run on older boards with the MPU disabled. URL: http://blackfin.uclinux.org/gf/tracker/5129 Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Merge branch 'for-linus' of ↵Linus Torvalds
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
2009-06-12Blackfin: fix sparseirq/kstat_irqs falloutMike Frysinger
The sparseirq changes (d7e51e66) played poorly with the Blackfin irqchip implementation as we're still using the old hardirq method. Our bad irq structure had a NULL kstat_irqs field so when all the common code tries to increment this field, everything goes big bada boom. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: fix unused warnings after nommu updateMike Frysinger
The massive nommu update (8feae131) left the local variable "vml" unused, so punt it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: export the last exception cause via debugfsRobin Getz
We have some test code that runs in userspace that exercises the exception handling of the Blackfin pretty thoroughly. Part of the validation process is checking the exact exception triggered, so export the last one seen to userspace via debugfs when debugging is enabled for the test code to check. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: fix length checking in kgdb_ebin2memRoel Kluin
The kgdb_ebin2mem() was decrementing the count variable to do parsing, but then later still tries to use it based on its original meaning. So leave it untouched and use a different variable to walk the memory. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: kgdb: fix up error return valuesMike Frysinger
The Blackfin kgdb code was all passing back positive errno values when it really should have been using negative errno values. Reported-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: push access_ok() L1 attribute downMike Frysinger
There is no need for the L1 attribute to be on the prototype of the access_ok() function as all consumers of the function do not care where it lives -- they'll always use pcrel calls to get to it. This prevents pointless recompiles of most of the system when this config option changes. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: punt duplicated search_exception_table() prototypeMike Frysinger
The common code already has a prototype for this function and we don't use it anywhere in the Blackfin code, so punt it from the Blackfin headers. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: add missing access_ok() checks to user functionsRobin Getz
The core string/clear user functions weren't checking the user pointers which caused kernel crashes with some bad programs and tests (like LTP). Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: convert early_printk EVT init to a loopMike Frysinger
The EVT registers are all contiguous in the memory map, so using a loop to initialize them all rather than hardcoding the list results in much better generated code (a hardware loop rather than a whole bunch of individual loads). Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: document the lsl variants of the L1 allocatorMike Frysinger
Make sure the meaning of "lsl" is covered somewhere and it is clear why we somewhat duplicate the sram alloc/free functions. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: rename Blackfin relocs according to the toolchainMike Frysinger
The latest Blackfin toolchain has fixed its relocation scheme to match other ports: always use R_BFIN_ prefix and capitalize everything. This brings the kernel in line with those fixes. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: check SIC defines rather than variant namesMike Frysinger
Rather than having to maintain a hard coded list of Blackfin variants, use the SIC defines themselves. This fixes build problems on BF51x/BF538 under some configurations as they were missing from one of the lists. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: add SSYNC to set_dma_sg() for descriptor fetchingSonic Zhang
Make sure the internal core buffers are flushed before telling the DMA engine to fetch the descriptor structure so that it gets the right values. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: convert SMP to only use generic time frameworkGraf Yang
Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: bf548-ezkit/bf537-stamp: add resources for ADXL345/346Michael Hennerich
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: override default uClinux MTD addr/sizeMike Frysinger
Due to a processor anomaly (05000263 to be exact), most Blackfin parts cannot keep the embedded filesystem image directly after the kernel in RAM. Instead, the filesystem needs to be relocated to the end of memory. As such, we need to tweak the map addr/size during boot for Blackfin systems. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: fix command line corruption with DEBUG_DOUBLEFAULTMike Frysinger
Commit 6b3087c6 (which introduced Blackfin SMP) broke command line passing when the DEBUG_DOUBLEFAULT config option was enabled. Switch the code to using a scratch register and not R7 which holds the command line. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: fix handling of initial L1 reservationGraf Yang
This restores some L1 reservation logic that was lost during the Blackfin SMP merge. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: merge sram init functionsGraf Yang
Now that the sram_init() function exists only to call the bfin_sram_init() after the punting of the reserve_pda() function, simply merge the two to avoid pointless overhead. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: drop unused reserve_pda() functionGraf Yang
The Per-processor Data Area isn't actually reserved by this function, and all it ended up doing was issuing a printk(), so punt it. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: update gptimers APIMichael Hennerich
First we fix the prototypes for functions that return boolean values by using "int" rather than "uint16_t". Then we introduce a get_gptimer_run() function for checking the current run status of a timer, and then we add a disable_gptimers_sync() function which parallels disable_gptimers() with corresponding normal "_sync" behavior. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: include system/processor info in dump messagesRobin Getz
People often copy & paste crash messages without surrounding context, so include common useful information like system/processor stats in the crash summary. This should smooth over the report/test cycle a bit more. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: add workaround for anomaly 05000461Robin Getz
Returning too fast with a bad RETI can trigger false errors. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: make sure stack is accessible before dumping itRobin Getz
When displaying a crash dump, make sure accessing the stack is safe so we don't crash at the same time. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: make deferred hardware errors more exactRobin Getz
Hardware errors on the Blackfin architecture are queued by nature of the hardware design. Things that could generate a hardware level queue up at the system interface and might not process until much later, at which point the system would send a notification back to the core. As such, it is possible for user space code to do something that would trigger a hardware error, but have it delay long enough for the process context to switch. So when the hardware error does signal, we mistakenly evaluate it as a different process or as kernel context and panic (erp!). This makes it pretty difficult to find the offending context. But wait, there is good news somewhere. By forcing a SSYNC in the interrupt entry, we force all pending queues at the system level to be processed and all hardware errors to be signaled. Then we check the current interrupt state to see if the hardware error is now signaled. If so, we re-queue the current interrupt and return thus allowing the higher priority hardware error interrupt to process properly. Since we haven't done any other context processing yet, the right context will be selected and killed. There is still the possibility that the exact offending instruction will be unknown, but at least we'll have a much better idea of where to look. The downside of course is that this causes system-wide syncs at every interrupt point which results in significant performance degradation. Since this situation should not occur in any properly configured system (as hardware errors are triggered by things like bad pointers), make it a debug configuration option and disable it by default. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: add note about anomaly 05000242 being worked aroundMike Frysinger
Document anomaly 05000242 workaround in source code. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: work around anomaly 05000220Graf Yang
When possible, work around anomaly 05000220 (external memory is write back cached, but L2 is not cached). If not possible, detect the conditions at build time and reject any qualifying configurations. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: rename some Blackfin driversMike Frysinger
Try to keep the naming conventions consistent, so: SPI_ADC_BF533 -> BFIN_SPI_ADC TWI_LCD -> BFIN_TWI_LCD Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: make sure MPU CPLB for first 1k is marked as validRobin Getz
This way we properly catch and kill applications that jump to a NULL ptr. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: add workaround for anomaly 05000287Graf Yang
Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12Blackfin: add support for gptimer0 as a tick sourceGraf Yang
For systems where the core cycles are not a usable tick source (like SMP or cycles gets updated), enable gptimer0 as an alternative. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>