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2008-08-14Blackfin arch: hook up some missing new system callsBryan Wu
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-14Blackfin arch: do not muck with the UART during boot -- let the serial ↵Mike Frysinger
driver worry about it Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-14Blackfin arch: clear EMAC_SYSTAT during IRQ init rather than early head.S as ↵Mike Frysinger
we dont need it setup that early Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-14Blackfin arch: Print out doublefault addresses, so debug can occurRobin Getz
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-14Blackfin arch: cleanup cache lock codeMike Frysinger
- remove cheesy read_iloc() function - move invalidate_entire_icache function to lock.S - export proper prototypes for functions in lock.S - only build lock.S when BFIN_ICACHE_LOCK is enabled Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-13Blackfin arch: workaround SIC_IWR1 reset bug, by keeping MDMA0/1 always ↵Michael Hennerich
enabled in SIC_IWR1. This way we ensure that reboot succeeds. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-06Blackfin arch: Fix Bug - System with EMAC driver enabled - Core not idlingMichael Hennerich
- Disable all bits in SIC_IWR unless we are going into a real (DPMC) power saving mode. Any Interrupt can wake the core form it's idle state. - Remove deep sleep mode as it is not going to be used anywhere: We support sleep, sleep deeper and hibernate. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-13Blackfin arch: delete unused cache functionsMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-06Blackfin arch: unify the duplicated portions of __start and split ↵Mike Frysinger
mach-specific pieces into _mach_early_start where they will be easier to trim over time Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-06Blackfin arch: add asm/thread_info.h for THREAD_SIZE defineMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-06Blackfin arch: make sure the BSS and kernel load address are 4 byte alignedMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-06Blackfin arch: unify the duplicated _real_start functionsMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-06Blackfin arch: remove support for Anomaly 05000125 as it doesnt exist on any ↵Mike Frysinger
supported processor/silicon Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-05Blackfin arch: Fix bugs - Make kgdb code apparent to app debugging.Sonic Zhang
- Skip single step if global interrupt disable bit is set. - Extend bernds' patch r4673 to skip single step in any interrupt entry that interrupts the code which is under single stepping. Bernds' patch only allow user space single stepping. Singed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-05Blackfin arch: Functional power management supportMichael Hennerich
Merge VR Regulator Hibernate wakeups into set_irq_wake for internal interrupts. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-05Blackfin arch: Fix bug - This change eliminates impact on application debuggingJie Zhang
Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-26Blackfin arch: Fix bug - skip single step in high priority interrupt handler ↵Sonic Zhang
instead of disabling all interrupts in single step debugging. Skip single step if event priority of current instruction is higher than that of the first instruction, from which gdb starts single step. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-16Blackfin arch: use local labels and ENDPROC() markingsMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-19Blackfin arch: Functional power management supportMichael Hennerich
Enable: PM_SUSPEND_MEM -> Blackfin Hibernate to SDRAM This feature requires a special bootloader (u-boot) supporting return from hibernate. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-14Blackfin arch: Remove redundant kernel optionMichael Hennerich
use kernel command line mem and max_mem bootargs to limit availabe memory instead. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-14Blackfin arch: Fix Bug - GPIO interrupts not disabled; edge sensitive ↵Michael Hennerich
interrupt hang system. - Implement irq_chip.enable and irq_chip.disable Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-05-07[Blackfin] arch: fix gdb testing regressionBernd Schmidt
When transferring to IRQ5 from an exception, save SYSCFG in memory across the transfer and clear the trace bit. When we get a single step exception, check whether we can safely clear the trace bit in SYSCFG. We can (and should) clear it after the first instruction of the interrupt handler; the first insn saves SYSCFG to the stack in all handlers. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-05-07[Blackfin] arch: In the double fault handler, set up the PT_RETI slotBernd Schmidt
In the double fault handler, set up the PT_RETI slot so that we print out the correct return address in the dumping code. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-05-07[Blackfin] arch: Support for CPU_FREQ and NOHZVitja Makarov
Singed-off-by: Vitja Makarov <vitja.makarov@gmail.com>
2008-05-07[Blackfin] arch: Functional power management support: Add CPU and platform ↵Michael Hennerich
voltage scaling support Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-05-07[Blackfin] arch: Cleanup Kconfig, fix comment and make sure we exclude ↵Michael Hennerich
CCLK=SCLK for some configurations Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-25[Blackfin] arch: Functional power management support: Add support for cpu ↵Michael Hennerich
frequency scaling Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-25[Blackfin] arch: Remove the circular buffering mechanism for exceptionsBernd Schmidt
Remove the circular buffering mechanism for exceptions. Instead, point RETX at a safe location from which to fetch three NOPs. This safe location is now in the fixed code area, and also used for certain anomaly workarounds, to ensure that user space can find a valid ICPLB when things are built with CONFIG_MPU. Also, save I/DCPLB_FAULT_ADDRESS when lowering to level 5, since the hardware reg is valid only at exception level. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: Allow concurrent use of GPIO and GPIO IRQMichael Hennerich
The irq setup code no longer calls gpio request and free. This patch also changes the default gpio_free behavior on Blackfin. A freed GPIO keeps it's last state, and is not defaulted back to an input. This is also what all other architectures do. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-25[Blackfin] arch: detect the memory available in the system on the fly by defaultMike Frysinger
detect the memory available in the system on the fly by default rather than forcing people to set this manually in the kconfig Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: make the mask explicit rather than writing a negative ↵Mike Frysinger
number in hex Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23[Blackfin] arch: __FUNCTION__ is gcc-specific, use __func__Harvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23[Blackfin] arch: fix bug - when using trace buffer with CONFIG_MPU enabled.Bernd Schmidt
There were a couple of problems with the way the trace buffer state is saved/restored in assembly. The DEBUG_HWTRACE_SAVE/RESTORE macros save a value to the stack, which is not immediately obvious; the CPLB exception code needed changes to load the correct value of the stack pointer. The other problem is that the SAVE/RESTORE macros weren't pushing and popping the value downwards on the stack, but rather moving it _upwards_, which is of course completely broken. We also need to make sure there's a matching DEBUG_HWTRACE_RESTORE in the error case of the CPLB handler. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-06[Blackfin] arch: to kill syscalls missing warning by adding new timerfd syscallsBryan Wu
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-25[Blackfin] arch: Fix CONFIG_PM support for BF561Michael Hennerich
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-25[Blackfin] arch: Remove DPMC char driver optionMichael Hennerich
Remove redundant/obsolete/dead code from DPMC driver Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-25[Blackfin] arch: Cleanup abd Simplify:Michael Hennerich
- Simplify init_arch_irq - Make code more readable - Remove useless SSYNCs - Fix comments Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-25[Blackfin] arch: fix bug - linux-2.6.24 (delayed) disable IRQ feature not ↵Michael Hennerich
functional for handle_simple_irq Bypass delayed disable feature by implementing chip->disable and chip->enable. http://lkml.org/lkml/2008/2/19/115 Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-25[Blackfin] arch: fix bug - Move IWR Enable All to the end of init_arch_irq ↵Michael Hennerich
otherwise it fails Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-02[Blackfin] arch:Fix BUG [#3876] pfbutton test for BTN3 on bf533 don't show ↵Michael Hennerich
complete info - Buttons on the BF533-STAMP board are not inverted - Fix spurious GPIO Interrupt caused during set irq_type for edge triggered interrupts Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-02[Blackfin] arch: change the trace buffer control start/stop logic in the ↵Mike Frysinger
exception handlers To save/restore the trace buffer control so that if we take an exception after turning off the trace buffer at a higher level we dont inadvertently turn the trace buffer back on Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-09[Blackfin] arch: hook up set_irq_wake in Blackfin's irq codeMichael Hennerich
- Add support for irq_wake on system and gpio interrupts - Remove outdated kernel options - Add option to select default PM mode - Fix various places where SIC_IWRx was only handled partially Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-09[Blackfin] arch: Merge BF561 support into ints-priorityMichael Hennerich
Merge single core ints-priority-sc.c and dual core ints-priority-dc.c into one common code ints-priority.c Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-05timerfd: new timerfd APIDavide Libenzi
This is the new timerfd API as it is implemented by the following patch: int timerfd_create(int clockid, int flags); int timerfd_settime(int ufd, int flags, const struct itimerspec *utmr, struct itimerspec *otmr); int timerfd_gettime(int ufd, struct itimerspec *otmr); The timerfd_create() API creates an un-programmed timerfd fd. The "clockid" parameter can be either CLOCK_MONOTONIC or CLOCK_REALTIME. The timerfd_settime() API give new settings by the timerfd fd, by optionally retrieving the previous expiration time (in case the "otmr" parameter is not NULL). The time value specified in "utmr" is absolute, if the TFD_TIMER_ABSTIME bit is set in the "flags" parameter. Otherwise it's a relative time. The timerfd_gettime() API returns the next expiration time of the timer, or {0, 0} if the timerfd has not been set yet. Like the previous timerfd API implementation, read(2) and poll(2) are supported (with the same interface). Here's a simple test program I used to exercise the new timerfd APIs: http://www.xmailserver.org/timerfd-test2.c [akpm@linux-foundation.org: coding-style cleanups] [akpm@linux-foundation.org: fix ia64 build] [akpm@linux-foundation.org: fix m68k build] [akpm@linux-foundation.org: fix mips build] [akpm@linux-foundation.org: fix alpha, arm, blackfin, cris, m68k, s390, sparc and sparc64 builds] [heiko.carstens@de.ibm.com: fix s390] [akpm@linux-foundation.org: fix powerpc build] [akpm@linux-foundation.org: fix sparc64 more] Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Davide Libenzi <davidel@xmailserver.org> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-27[Blackfin] arch: Add the semtimedop syscall. Upstream uClibc doesn't ↵Bernd Schmidt
compile without it. Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-01-27[Blackfin] arch: Initial checkin of the memory protection support.Bernd Schmidt
Enable it with CONFIG_MPU. Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-01-11[Blackfin] arch: Add some comments - fix semicolonsMichael Hennerich
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-01-11[Blackfin] arch: move all code related to CPLB handling into a new ↵Bernd Schmidt
subdirectory under kernel/ Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2007-12-24[Blackfin] arch: Enable both edge triggered GPIO IRQs on BF54x and use ↵Michael Hennerich
irq_to_gpio() Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2007-12-24[Blackfin] arch: append IRQ Number to label stringMichael Hennerich
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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