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* Merge branch 'for-linus' of ↵Linus Torvalds2008-10-16
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: Blackfin arch: make sure cycles is marked as volatile so gcc doesnt reorder on us Blackfin arch: disable CONFIG_HW_RANDOM and CONFIG_DAB in defconfig files Blackfin arch: update cache flush prototypes with argument names to make them less mysterious Blackfin arch: move bfin_addr_dcachable() and friends into the cacheflush header where it belongs Blackfin arch: use the new bfin_addr_dcachable() function Blackfin arch: fix bug - build kernel failed at head.S when reprogram clock on all platforms Blackfin arch: unify/cleanup cache code Blackfin arch: update AD7879 platform resources in board file Blackfin arch: Zero out bss region in L1/L2 memory. Blackfin arch: add read/write IO accessor functions to Blackfin Blackfin arch: fix bug - some serial header files set RTS to an input when they should all be outputs
| * Blackfin arch: unify/cleanup cache codeMike Frysinger2008-10-16
| | | | | | | | | | | | | | | | | | - to be correct wrt to end ranges - to be optimal with a one-instruction hardware loop Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * Blackfin arch: Zero out bss region in L1/L2 memory.Graf Yang2008-10-16
| | | | | | | | | | | | Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* | cpufreq: remove policy->governor setting in drivers initializationDominik Brodowski2008-10-15
|/ | | | | | | | | | | | As policy->governor is already set to CPUFREQ_DEFAULT_GOVERNOR in the (always built-in) cpufreq core, we do not need to set it in the drivers. This fixes the sparc64 allmodconfig build failure. Also, remove a totally useles setting of ->policy in cpufreq-pxa3xx.c. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin arch: Fix bug - HW Errors never recover on BF548Robin Getz2008-10-09
| | | | | | | | | | | The kernel does not properly clear the EBIU Error Master (EBIU_ERRMST) Register on BF548, which causes the kernel to panic. We need to make sure that we clear the EBIU_ERRMST (necessary on BF54x) Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: give sys_strace proper entry markingsMike Frysinger2008-10-09
| | | | | | | | a global _sys_trace will cause the assembler to fail, it should be fixed in toolchain side firstly. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: Fix BUG -- BF533 + 0.5 silicon + MPU + UART PIO -> crashMichael Hennerich2008-10-09
| | | | | | | | | | | | | Apply ANOMALY_05000283 & ANOMALY_05000315 Workaround also to the EXCEPTION path. Cover evt_ivhw also with ANOMALY_05000315 The Workaround needs to be prior to accesses (either read or write) to any system MMR. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: Not call generic set_irq_handler() in bfin_gpio_irq_type() ↵Graf Yang2008-10-08
| | | | | | | | due to spinlock recursion Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: Use DTEST rather than DMA to poke at L1 SRAM during exception ↵Robin Getz2008-10-08
| | | | | | | | context Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: Modify some funtion names to more genernal onesGraf Yang2008-10-08
| | | | | | Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: add a meaningful name for each irqchipGraf Yang2008-10-08
| | | | | | Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: add supporting for kgdbSonic Zhang2008-10-13
| | | | | | Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: add supporting for double fault debug handlingRobin Getz2008-10-08
| | | | | | | Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: Fix PM building on BF52x: No ROTWE on BF52x, add USBWEMichael Hennerich2008-08-28
| | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: move include/asm-blackfin header files to arch/blackfinBryan Wu2008-08-26
| | | | | Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: dont actually need to muck with EMAC_SYSTAT for BF52x for ↵Mike Frysinger2008-08-25
| | | | | | | | demuxing Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: hook up some missing new system callsBryan Wu2008-08-14
| | | | | Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: do not muck with the UART during boot -- let the serial ↵Mike Frysinger2008-08-14
| | | | | | | | driver worry about it Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: clear EMAC_SYSTAT during IRQ init rather than early head.S as ↵Mike Frysinger2008-08-14
| | | | | | | | we dont need it setup that early Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: Print out doublefault addresses, so debug can occurRobin Getz2008-08-14
| | | | | | Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: cleanup cache lock codeMike Frysinger2008-08-14
| | | | | | | | | | | - 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>
* Blackfin arch: workaround SIC_IWR1 reset bug, by keeping MDMA0/1 always ↵Michael Hennerich2008-08-13
| | | | | | | | | | 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>
* Blackfin arch: Fix Bug - System with EMAC driver enabled - Core not idlingMichael Hennerich2008-08-06
| | | | | | | | | | | | - 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>
* Blackfin arch: delete unused cache functionsMike Frysinger2008-08-13
| | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: unify the duplicated portions of __start and split ↵Mike Frysinger2008-08-06
| | | | | | | | 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>
* Blackfin arch: add asm/thread_info.h for THREAD_SIZE defineMike Frysinger2008-08-06
| | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: make sure the BSS and kernel load address are 4 byte alignedMike Frysinger2008-08-06
| | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: unify the duplicated _real_start functionsMike Frysinger2008-08-06
| | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: remove support for Anomaly 05000125 as it doesnt exist on any ↵Mike Frysinger2008-08-06
| | | | | | | | supported processor/silicon Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: Fix bugs - Make kgdb code apparent to app debugging.Sonic Zhang2008-08-05
| | | | | | | | | | | - 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>
* Blackfin arch: Functional power management supportMichael Hennerich2008-08-05
| | | | | | | | | 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>
* Blackfin arch: Fix bug - This change eliminates impact on application debuggingJie Zhang2008-08-05
| | | | | | Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: Fix bug - skip single step in high priority interrupt handler ↵Sonic Zhang2008-07-26
| | | | | | | | | | | 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>
* Blackfin arch: use local labels and ENDPROC() markingsMike Frysinger2008-07-16
| | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* Blackfin arch: Functional power management supportMichael Hennerich2008-07-19
| | | | | | | | | | 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>
* Blackfin arch: Remove redundant kernel optionMichael Hennerich2008-07-14
| | | | | | | | | 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>
* Blackfin arch: Fix Bug - GPIO interrupts not disabled; edge sensitive ↵Michael Hennerich2008-07-14
| | | | | | | | | | 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>
* [Blackfin] arch: fix gdb testing regressionBernd Schmidt2008-05-06
| | | | | | | | | | | | | | 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>
* [Blackfin] arch: In the double fault handler, set up the PT_RETI slotBernd Schmidt2008-05-06
| | | | | | | | | 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>
* [Blackfin] arch: Support for CPU_FREQ and NOHZVitja Makarov2008-05-06
| | | | | Singed-off-by: Vitja Makarov <vitja.makarov@gmail.com>
* [Blackfin] arch: Functional power management support: Add CPU and platform ↵Michael Hennerich2008-05-06
| | | | | | | | voltage scaling support Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* [Blackfin] arch: Cleanup Kconfig, fix comment and make sure we exclude ↵Michael Hennerich2008-05-06
| | | | | | | | CCLK=SCLK for some configurations Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* [Blackfin] arch: Functional power management support: Add support for cpu ↵Michael Hennerich2008-04-24
| | | | | | | | frequency scaling Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* [Blackfin] arch: Remove the circular buffering mechanism for exceptionsBernd Schmidt2008-04-24
| | | | | | | | | | | | | | | | 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>
* [Blackfin] arch: Allow concurrent use of GPIO and GPIO IRQMichael Hennerich2008-04-23
| | | | | | | | | | | 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>
* [Blackfin] arch: detect the memory available in the system on the fly by defaultMike Frysinger2008-04-24
| | | | | | | | | 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>
* [Blackfin] arch: make the mask explicit rather than writing a negative ↵Mike Frysinger2008-04-23
| | | | | | | | number in hex Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* [Blackfin] arch: __FUNCTION__ is gcc-specific, use __func__Harvey Harrison2008-04-22
| | | | | | | | | | 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>
* [Blackfin] arch: fix bug - when using trace buffer with CONFIG_MPU enabled.Bernd Schmidt2008-04-22
| | | | | | | | | | | | | | | | | 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>
* [Blackfin] arch: to kill syscalls missing warning by adding new timerfd syscallsBryan Wu2008-03-06
| | | | | Signed-off-by: Bryan Wu <cooloney@kernel.org>
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