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path: root/arch/arm/mach-omap2/omap-smp.c
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2011-12-08ARM: OMAP4: Export omap4_get_base*() rather than global address pointersSantosh Shilimkar1-0/+5
This patch exports APIs to get base address for GIC distributor, CPU interface, SCU and PL310 L2 Cache which are used in OMAP4 PM code. This was suggested by Kevin Hilman <[email protected]> during OMAP4 PM code review. Signed-off-by: Santosh Shilimkar <[email protected]> Acked-by: Jean Pihet <[email protected]> Reviewed-by: Kevin Hilman <[email protected]> Tested-by: Vishwanath BS <[email protected]> Signed-off-by: Kevin Hilman <[email protected]>
2011-11-17ARM: 7159/1: OMAP: Introduce local common.h filesTony Lindgren1-1/+2
As suggested by Russell King - ARM Linux <[email protected]>, there's no need to keep local prototypes in non-local headers. Add mach-omap1/common.h and mach-omap2/common.h and move the local prototypes there from plat/common.h and mach/omap4-common.h. Signed-off-by: Tony Lindgren <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-11-01Merge branch 'next/cleanup2' of git://git.linaro.org/people/arnd/arm-socLinus Torvalds1-2/+5
* 'next/cleanup2' of git://git.linaro.org/people/arnd/arm-soc: (31 commits) ARM: OMAP: Warn if omap_ioremap is called before SoC detection ARM: OMAP: Move set_globals initialization to happen in init_early ARM: OMAP: Map SRAM later on with ioremap_exec() ARM: OMAP: Remove calls to SRAM allocations for framebuffer ARM: OMAP: Avoid cpu_is_omapxxxx usage until map_io is done ARM: OMAP1: Use generic map_io, init_early and init_irq arm/dts: OMAP3+: Add mpu, dsp and iva nodes arm/dts: OMAP4: Add a main ocp entry bound to l3-noc driver ARM: OMAP2+: l3-noc: Add support for device-tree ARM: OMAP2+: board-generic: Add i2c static init ARM: OMAP2+: board-generic: Add DT support to generic board arm/dts: Add support for OMAP3 Beagle board arm/dts: Add initial device tree support for OMAP3 SoC arm/dts: Add support for OMAP4 SDP board arm/dts: Add support for OMAP4 PandaBoard arm/dts: Add initial device tree support for OMAP4 SoC ARM: OMAP: omap_device: Add a method to build an omap_device from a DT node ARM: OMAP: omap_device: Add omap_device_[alloc|delete] for DT integration of: Add helpers to get one string in multiple strings property ARM: OMAP2+: devices: Remove all omap_device_pm_latency structures ... Fix up trivial header file conflicts in arch/arm/mach-omap2/board-generic.c
2011-10-20ARM: smp: fix clipping of number of CPUsRussell King1-6/+4
Rather than clipping the number of CPUs using the compile-time NR_CPUS constant, use the runtime nr_cpu_ids value instead. This allows the nr_cpus command line option to work as expected. Cc: <[email protected]> Reported-by: Mark Salter <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-10-19ARM: OMAP: Move set_globals initialization to happen in init_earlyTony Lindgren1-2/+5
Otherwise we can't do generic map_io as we currently rely on static mappings that work only because of arch_ioremap. Acked-by: Nicolas Pitre <[email protected]> Reviewed-by: Santosh Shilimkar <[email protected]> Tested-by: Santosh Shilimkar <[email protected]> Signed-off-by: Tony Lindgren <[email protected]>
2011-07-07ARM: 6993/1: platsmp: Allow secondary cpu hotplug with maxcpus=1Stephen Boyd1-8/+0
If an ARM system has multiple cpus in the same socket and the kernel is booted with maxcpus=1, secondary cpus are possible but not present due to how platform_smp_prepare_cpus() is called. Since most typical ARM processors don't actually support physical hotplug, initialize the present map to be equal to the possible map in generic ARM SMP code. Also, always call platform_smp_prepare_cpus() as long as max_cpus is non-zero (0 means no SMP) to allow platform code to do any SMP setup. After applying this patch it's possible to boot an ARM system with maxcpus=1 on the command line and then hotplug in secondary cpus via sysfs. This is more in line with how x86 does things. Signed-off-by: Stephen Boyd <[email protected]> Cc: Paul Mundt <[email protected]> Cc: Kukjin Kim <[email protected]> Cc: David Brown <[email protected]> Cc: Tony Lindgren <[email protected]> Cc: Srinidhi Kasagar <[email protected]> Cc: Linus Walleij <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-05-23ARM: consolidate SMP cross call implementationRussell King1-1/+4
Rather than having each platform class provide a mach/smp.h header for smp_cross_call(), arrange for them to register the function with the core ARM SMP code instead. Signed-off-by: Russell King <[email protected]>
2011-01-06Merge branch 'misc' into develRussell King1-51/+15
Conflicts: arch/arm/Kconfig arch/arm/common/Makefile arch/arm/kernel/Makefile arch/arm/kernel/smp.c
2010-12-20ARM: SMP: consolidate trace_hardirqs_off() into common SMP codeRussell King1-2/+0
All platforms call trace_hardirqs_off() in their secondary startup code, so move this into the core SMP code - it doesn't need to be in the per-platform code. Signed-off-by: Russell King <[email protected]>
2010-12-20ARM: SMP: consolidate the common parts of smp_prepare_cpus()Russell King1-26/+7
There is a certain amount of smp_prepare_cpus() which doesn't belong in the platform support code - that is, code which is invariant to the SMP implementation. Move this code into arch/arm/kernel/smp.c, and add a platform_ prefix to the original function. Signed-off-by: Russell King <[email protected]>
2010-12-20ARM: SMP: get rid of get_core_count()Russell King1-11/+1
We don't need this small function as well as scu_get_core_count() Signed-off-by: Russell King <[email protected]>
2010-12-20ARM: SMP: Clean up ncores sanity checksRussell King1-6/+0
scu_get_core_count() never returns zero cores, so we don't need to check and correct if ncores is zero. Tegra was missing the check against NR_CPUS, leading to a potential bitfield overflow if this becomes the case. Signed-off-by: Russell King <[email protected]>
2010-12-20ARM: SMP: move CPU number sanity checks to smp_init_cpus()Russell King1-10/+11
Ensure that the number of CPUs is sanity checked before setting the number of possible CPUs. This avoids any chance of overflowing the cpu_possible bitmap. Signed-off-by: Russell King <[email protected]>
2010-12-14ARM: GIC: Remove MMIO address from gic_cpu_init, rename to gic_secondary_initRussell King1-1/+1
We don't need to re-pass the base address for the CPU interfaces to the GIC for secondary CPUs, as it will never be different from the boot CPU - and even if it was, we'd overwrite the boot CPU's base address. Get rid of this argument, and rename to gic_secondary_init(). Reviewed-by: Catalin Marinas <[email protected]> Tested-by: Abhijeet Dharmapurikar <[email protected]> Signed-off-by: Russell King <[email protected]>
2010-12-03ARM: SMP: pass an ipi number to smp_cross_call()Russell King1-1/+1
This allows us to use smp_cross_call() to trigger a number of different software generated interrupts, rather than combining them all on one SGI. Recover the SGI number via do_IPI. Reviewed-by: Catalin Marinas <[email protected]> Signed-off-by: Russell King <[email protected]>
2010-08-16omap: Fix sev instruction usage for multi-omapTony Lindgren1-2/+1
Otherwise we get the following error with omap3_defconfig and CONFIG_SMP: Error: selected processor does not support `sev' Signed-off-by: Tony Lindgren <[email protected]> Acked-by: Santosh Shilimkar <[email protected]>
2010-08-02omap4: hotplug: Add basic CPU hotplug supportSantosh Shilimkar1-1/+2
This patch adds cpu hotplug support for OMAP4430. Only CPU inactive state is supported as a low power state in the basic hot-plug support Signed-off-by: Rajendra Nayak <[email protected]> Signed-off-by: Santosh Shilimkar <[email protected]> Cc: Kevin Hilman <[email protected]> Signed-off-by: Tony Lindgren <[email protected]>
2010-05-20omap4: Move SOC specific code from board fileSantosh Shilimkar1-1/+1
This patch moves OMAP4 soc specific code from 4430sdp board file. The change is necessary so that newer board support can be added with minimal changes. This will be also problematic for multi-board, multi-omap builds. Signed-off-by: Santosh Shilimkar <[email protected]> Signed-off-by: Tony Lindgren <[email protected]>
2009-12-11OMAP4: Remove the secondary wait loopSantosh Shilimkar1-7/+0
The secondary cores wakes up in time so the wait loop is not necessary anymore. Signed-off-by: Santosh Shilimkar <[email protected]> Signed-off-by: Tony Lindgren <[email protected]>
2009-12-11OMAP4: AuxCoreBoot registers only accessible in secure modeSantosh Shilimkar1-16/+8
The AuxCoreBoot0 and AuxCoreBoot1 can be only accessed in secure mode. Replace the current code with secure monitor API's to access/modify these registers. Signed-off-by: Santosh Shilimkar <[email protected]> Signed-off-by: Tony Lindgren <[email protected]>
2009-10-20omap: headers: Move remaining headers from include/mach to include/platTony Lindgren1-1/+1
Move the remaining headers under plat-omap/include/mach to plat-omap/include/plat. Also search and replace the files using these headers to include using the right path. This was done with: #!/bin/bash mach_dir_old="arch/arm/plat-omap/include/mach" plat_dir_new="arch/arm/plat-omap/include/plat" headers=$(cd $mach_dir_old && ls *.h) omap_dirs="arch/arm/*omap*/ \ drivers/video/omap \ sound/soc/omap" other_files="drivers/leds/leds-ams-delta.c \ drivers/mfd/menelaus.c \ drivers/mfd/twl4030-core.c \ drivers/mtd/nand/ams-delta.c" for header in $headers; do old="#include <mach\/$header" new="#include <plat\/$header" for dir in $omap_dirs; do find $dir -type f -name \*.[chS] | \ xargs sed -i "s/$old/$new/" done find drivers/ -type f -name \*omap*.[chS] | \ xargs sed -i "s/$old/$new/" for file in $other_files; do sed -i "s/$old/$new/" $file done done for header in $(ls $mach_dir_old/*.h); do git mv $header $plat_dir_new/ done Signed-off-by: Tony Lindgren <[email protected]>
2009-10-19omap: Use ioremap for omap4 L4 codeTony Lindgren1-8/+21
Use ioremap for omap4 L4 code Signed-off-by: Santosh Shilimkar <[email protected]> Signed-off-by: Tony Lindgren <[email protected]>
2009-08-28OMAP: Remove OMAP_IO_ADDRESS, use OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS insteadTony Lindgren1-1/+1
Search and replace OMAP_IO_ADDRESS with OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS, and convert omap_read/write into a functions instead of a macros. Also rename OMAP_MPUIO_VBASE to OMAP1_MPUIO_VBASE. In the long run, most code should use ioremap + __raw_read/write instead. Signed-off-by: Tony Lindgren <[email protected]>
2009-06-09ARM: OMAP4: SMP: Add OMAP4430 SMP board filesSantosh Shilimkar1-0/+178
This patch adds SMP platform files support for OMAP4430SDP. TI's OMAP4430 SOC is based on ARM Cortex-A9 SMP architecture. It's a dual core SOC with GIC used for interrupt handling and SCU for cache coherency. Signed-off-by: Santosh Shilimkar <[email protected]>
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