- 30 1月, 2015 1 次提交
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The following patch adds coupled cpuidle support for Exynos4210 to an existing cpuidle-exynos driver. As a result it enables AFTR mode to be used by default on Exynos4210 without the need to hot unplug CPU1 first. The patch is heavily based on earlier cpuidle-exynos4210 driver from Daniel Lezcano: http://www.spinics.net/lists/linux-samsung-soc/msg28134.html Changes from Daniel's code include: - porting code to current kernels - fixing it to work on my setup (by using S5P_INFORM register instead of S5P_VA_SYSRAM one on Revison 1.1 and retrying poking CPU1 out of the BOOT ROM if necessary) - fixing rare lockup caused by waiting for CPU1 to get stuck in the BOOT ROM (CPU hotplug code in arch/arm/mach-exynos/platsmp.c doesn't require this and works fine) - moving Exynos specific code to arch/arm/mach-exynos/pm.c - using cpu_boot_reg_base() helper instead of BOOT_VECTOR macro - using exynos_cpu_*() helpers instead of accessing registers directly - using arch_send_wakeup_ipi_mask() instead of dsb_sev() (this matches CPU hotplug code in arch/arm/mach-exynos/platsmp.c) - integrating separate exynos4210-cpuidle driver into existing exynos-cpuidle one Cc: Colin Cross <ccross@google.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org> Acked-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NKukjin Kim <kgene@kernel.org>
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- 21 11月, 2014 1 次提交
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由 Abhilash Kesavan 提交于
Use the MCPM layer to handle core suspend/resume on Exynos5420. Also, restore the entry address setup code post-resume. Signed-off-by: NAbhilash Kesavan <a.kesavan@samsung.com> Acked-by: NNicolas Pitre <nico@linaro.org> Reviewed-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk> Tested-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 20 10月, 2014 4 次提交
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由 Krzysztof Kozlowski 提交于
Without software reset the secondary CPU does not power up and exynos_boot_secondary() ends with pen_release equal to 1. This can be observed in dmesg: CPU1: failed to come online Brought up 1 CPUs SMP: Total of 1 processors activated. CPU: All CPU(s) started in SVC mode. When booting the secondary CPU on Exynos3250 execute also software reset for core 1. Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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由 Krzysztof Kozlowski 提交于
On Exynos4 USE_DELAYED_RESET_ASSERTION must be set in ARM_COREx_OPTION register during CPU power down. This is the proper way of powering down CPU on Exynos4. Additionally on Exynos4212 without this the CPU clock down feature won't work after powering down some CPU and the online CPUs will work at full frequency chosen by CPUfreq governor. Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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由 Krzysztof Kozlowski 提交于
The __ref annotation for exynos_cpu_die() is not needed because the function does not reference any __init/__exit symbol or call. Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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由 Krzysztof Kozlowski 提交于
Cleanup a little the SMP/hotplug code for Exynos by: 1. Moving completely all functions from hotplug.c into the platsmp.c; 2. Deleting the hotplug.c file. After recent cleanups (e.g. 75ad2ab2 "ARM: EXYNOS: use v7_exit_coherency_flush macro for cache disabling") there was only CPU power down related code in hotplug.c file. Rationale behind the code movement and benefits: 1. The file platsmp.c is the only user of code located in hotplug.c. Keeping code in hotplug.c required declaring exynos_cpu_die() in common.h. Such dependencies and mentioned exynos_cpu_die() declaration can be removed. 2. In next patches exynos_set_delayed_reset_assertion() will be introduced. This function will be called by: - cpu_leave_power (hotplug.c), - platform_do_lowpower (hotplug.c), - exynos_boot_secondary (platsmp.c). Merging hotplug.c into platsmp.c leads to simpler and cleaner code with less dependencies between files. The commit only moves code around with one additional observable change: the hotplug.c was compiled with custom CFLAGS (-march=armv7-a). These CFLAGS are not necessary any more. Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 14 9月, 2014 1 次提交
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由 Krzysztof Kozlowski 提交于
Commit b3205dea ("ARM: EXYNOS: Map SYSRAM through generic DT bindings") introduced local variable boot_reg where boot address from cpu_boot_reg() call is stored. Re-use it instead calling cpu_boot_reg() again. Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: NSachin Kamat <sachin.kamat@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 23 7月, 2014 1 次提交
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由 Pankaj Dubey 提交于
Under "arm/mach-exynos" many files are using PMU register offsets. Since we have added support for accessing PMU base address via DT, now we can remove PMU mapping from exynosX_iodesc. Let's convert all these access using iomapped address. This will help us in removing static mapping of PMU base address as well as help in reducing dependency over machine header files. Thus helping for migration of PMU implementation from machine to driver folder which can be reused for ARM64 based SoC. Also as we have removed static mappings from "regs-pmu.h" it does not need map.h anymore. But "platsmp.c" needed this and till now it got included indirectly. So lets move header inclusion of "mach/map.h" from "regs-pmu.h" to "platsmp.c". Signed-off-by: NPankaj Dubey <pankaj.dubey@samsung.com> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 20 7月, 2014 1 次提交
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由 Krzysztof Kozlowski 提交于
Fix building of exynos_defconfig with disabled PM_SLEEP: CONFIG_PM_SLEEP=n CONFIG_PM_SLEEP_SMP=n CONFIG_SUSPEND=n by moving functions for power up/down of CPU and cluster to platsmp.c The build error messages: arch/arm/mach-exynos/built-in.o: In function `exynos_boot_secondary': arch/arm/mach-exynos/platsmp.c:111: undefined reference to `exynos_cpu_power_state' arch/arm/mach-exynos/platsmp.c:112: undefined reference to `exynos_cpu_power_up' arch/arm/mach-exynos/platsmp.c:116: undefined reference to `exynos_cpu_power_state' make: *** [vmlinux] Error 1 Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com>, Signed-off-by: NKukjin Kim <kgene.kim@samsung.com> Signed-off-by: NOlof Johansson <olof@lixom.net>
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- 19 7月, 2014 1 次提交
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由 Tomasz Figa 提交于
When CPU topology is specified in device tree, cpu_logical_map() does not return core ID anymore, but rather full MPIDR value. This breaks existing calculation of PMU register offsets on Exynos SoCs. This patch fixes the problem by adjusting the code to use only core ID bits of the value returned by cpu_logical_map() to allow CPU topology to be specified in device tree on Exynos SoCs. Signed-off-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com> Signed-off-by: NOlof Johansson <olof@lixom.net>
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- 18 7月, 2014 1 次提交
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由 Russell King 提交于
Ensure that platform maintainers check the CPU part number in the right manner: the CPU part number is meaningless without also checking the CPU implement(e|o)r (choose your preferred spelling!) Provide an interface which returns both the implementer and part number together, and update the definitions to include the implementer. Mark the old function as being deprecated... indeed, using the old function with the definitions will now always evaluate as false, so people must update their un-merged code to the new function. While this could be avoided by adding new definitions, we'd also have to create new names for them which would be awkward. Acked-by: NNicolas Pitre <nico@linaro.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 15 7月, 2014 1 次提交
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由 Pankaj Dubey 提交于
Many files under "arm/mach-exynos" are having file path in file comment section which is invalid now. So for better code maintainability let's remove them. Signed-off-by: NPankaj Dubey <pankaj.dubey@samsung.com> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 17 6月, 2014 1 次提交
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由 Olof Johansson 提交于
This solves a problem with building with CONFIG_SMP=n due to missing sysram_base_addr (or sysram_ns_base_addr) variables. The new setup method is more awkward than I'd like for it to be, but it can't be done in init_early() since ioremap is not yet available, but it needs to happen before SMP. Reported-by: NRussell King <linux@arm.linux.org.uk> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: NOlof Johansson <olof@lixom.net> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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- 31 5月, 2014 1 次提交
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由 Arun Kumar K 提交于
Exynos5800 is an octa core SoC which is based on the 5420 platform. This patch adds the basic support for it in the mach-exynos. Signed-off-by: NArun Kumar K <arun.kk@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 26 5月, 2014 2 次提交
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由 Daniel Lezcano 提交于
A look at the code reveals use of S5P_VA_SYSRAM macro, in case of certain SoC revisions, which is not valid any longer, after SYSRAM started to be mapped dynamically. The new dynamic mapping is stored in sysram_base_addr variable, which is declared static in platsmp.c This fix makes sysram_base_addr non-static, declared it in common.h and used in pm.c instead of S5P_VA_SYSRAM. Suggested-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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由 Sachin Kamat 提交于
Exynos specific macros and declarations have been moved to mach-exynos. Inclusion of plat/cpu.h is no more necessary. Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 16 5月, 2014 1 次提交
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由 Leela Krishna Amudala 提交于
Use generic exynos cpu power control functions to power up/down and to know the status of the cpu in platsmp and hotplug code. Signed-off-by: NLeela Krishna Amudala <leela.krishna@linaro.org> Signed-off-by: NAbhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 15 5月, 2014 1 次提交
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由 Sachin Kamat 提交于
Instead of hardcoding the SYSRAM details for each SoC, pass this information through device tree (DT) and make the code SoC agnostic. Generic DT SRAM bindings are used for achieving this. Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org> Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NHeiko Stuebner <heiko@sntech.de> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 21 3月, 2014 1 次提交
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由 Sachin Kamat 提交于
This is a dummy placeholder file. Delete it. Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 19 12月, 2013 2 次提交
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由 Kukjin Kim 提交于
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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由 Kukjin Kim 提交于
This moves regs-pmu.h file into mach-exynos directory. Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 12 12月, 2013 1 次提交
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由 Nicolas Pitre 提交于
We have a handy macro to replace open coded __cpuc_flush_dcache_area(() and outer_clean_range() sequences. Let's use it. No functional change. Signed-off-by: NNicolas Pitre <nico@linaro.org> Signed-off-by: NOlof Johansson <olof@lixom.net>
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- 15 7月, 2013 1 次提交
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由 Paul Gortmaker 提交于
The __cpuinit type of throwaway sections might have made sense some time ago when RAM was more constrained, but now the savings do not offset the cost and complications. For example, the fix in commit 5e427ec2 ("x86: Fix bit corruption at CPU resume time") is a good example of the nasty type of bugs that can be created with improper use of the various __init prefixes. After a discussion on LKML[1] it was decided that cpuinit should go the way of devinit and be phased out. Once all the users are gone, we can then finally remove the macros themselves from linux/init.h. Note that some harmless section mismatch warnings may result, since notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c) and are flagged as __cpuinit -- so if we remove the __cpuinit from the arch specific callers, we will also get section mismatch warnings. As an intermediate step, we intend to turn the linux/init.h cpuinit related content into no-ops as early as possible, since that will get rid of these warnings. In any case, they are temporary and harmless. This removes all the ARM uses of the __cpuinit macros from C code, and all __CPUINIT from assembly code. It also had two ".previous" section statements that were paired off against __CPUINIT (aka .section ".cpuinit.text") that also get removed here. [1] https://lkml.org/lkml/2013/5/20/589 Cc: Russell King <linux@arm.linux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
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- 19 6月, 2013 3 次提交
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由 Chander Kashyap 提交于
The location at which the boot address is specified for secondary CPUs of EXYNOS5420 is SYSRAM base + 4. Update the cpu_boot_reg function accordingly. Signed-off-by: NChander Kashyap <chander.kashyap@linaro.org> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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由 Chander Kashyap 提交于
Instead of having to specify the number for CPUs in EXYNOS5250 in platsmp.c file, let the number of CPUs be determined by having this information listed in EXYNOS5250 device tree file. Signed-off-by: NChander Kashyap <chander.kashyap@linaro.org> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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由 Leela Krishna Amudala 提交于
This patch reads the cpuid part number and if it matches with cortex-A9, calls scu_enable() Signed-off-by: NLeela Krishna Amudala <l.krishna@samsung.com> Reviewed-by: NDoug Anderson <dianders@chromium.org> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 09 4月, 2013 1 次提交
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由 Tomasz Figa 提交于
Boards using secure firmware must use different CPU boot registers and call secure firmware to boot the CPU. Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 27 3月, 2013 1 次提交
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由 Catalin Marinas 提交于
All the calls to gic_secondary_init() pass 0 as the first argument. Since this function is called on each CPU when starting, it can be done in a platform-independent way via a CPU notifier registered by the GIC code. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NStephen Warren <swarren@nvidia.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: NRob Herring <rob.herring@calxeda.com> Acked-by: NSimon Horman <horms+renesas@verge.net.au> Tested-by: NSimon Horman <horms+renesas@verge.net.au> Acked-by: NSrinidhi Kasagar <srinidhi.kasagar@stericsson.com> Tested-by: NDinh Nguyen <dinguyen@altera.com> Acked-by: NNicolas Pitre <nico@linaro.org> Tested-by: NMarc Zyngier <marc.zyngier@arm.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: David Brown <davidb@codeaurora.org> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Shiraz Hashim <shiraz.hashim@st.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Barry Song <baohua.song@csr.com>
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- 13 1月, 2013 1 次提交
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由 Rob Herring 提交于
Now that we have GIC moved to drivers/irqchip and all GIC DT init for platforms using irqchip_init, move gic.h and update the remaining includes. Signed-off-by: NRob Herring <rob.herring@calxeda.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Russell King <linux@arm.linux.org.uk> Cc: Anton Vorontsov <avorontsov@mvista.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: David Brown <davidb@codeaurora.org> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Viresh Kumar <viresh.linux@gmail.com> Cc: Shiraz Hashim <shiraz.hashim@st.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Samuel Ortiz <sameo@linux.intel.com>
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- 11 1月, 2013 1 次提交
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由 Rob Herring 提交于
In preparation of moving gic code to drivers/irqchip, remove the direct platform dependencies on gic_raise_softirq. Move the setup of smp_cross_call into the gic code and use arch_send_wakeup_ipi_mask function to trigger wake-up IPIs. Signed-off-by: NRob Herring <rob.herring@calxeda.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: David Brown <davidb@codeaurora.org> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Acked-by: NTony Lindgren <tony@atomide.com> Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Magnus Damm <magnus.damm@gmail.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Cc: Shiraz Hashim <shiraz.hashim@st.com> Acked-by: NStephen Warren <swarren@nvidia.com> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Linus Walleij <linus.walleij@linaro.org> Acked-by: NOlof Johansson <olof@lixom.net>
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- 19 12月, 2012 1 次提交
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由 Kukjin Kim 提交于
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 28 11月, 2012 1 次提交
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由 Tomasz Figa 提交于
Exynos4412 uses different information register for each core. This patch adjusts the bring-up code to take that into account. Signed-off-by: NTomasz Figa <t.figa@samsung.com> Reviewed-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 14 9月, 2012 2 次提交
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由 Marc Zyngier 提交于
Almost each SMP platform defines pen_release to manage booting secondary CPUs. This of course clashes with the single zImage effort. Add the pen_release definition to the ARM SMP code, and remove all others. This should only be used by platforms which lack any kind of CPU power management... Reported-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NNicolas Pitre <nico@linaro.org> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Marc Zyngier 提交于
Convert Exynos4 to use struct smp_operations to provide its SMP and CPU hotplug operations. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NNicolas Pitre <nico@linaro.org> Tested-by: NKyungmin Park <kyungmin.park@samsung.com> Acked-by: NKyungmin Park <kyungmin.park@samsung.com> Acked-by: NKukjin Kim <kgene.kim@samsung.com> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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- 11 8月, 2012 1 次提交
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由 Stephen Boyd 提交于
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org> Acked-by: NKukjin Kim <kgene.kim@samsung.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 14 3月, 2012 1 次提交
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由 Kukjin Kim 提交于
The EXYNOS5250 has two Cortex-A15 cores and there's no need to call scu_enable() in platform_smp_prepare_cpus() because Cortex-A15 has no regarding scu register which can be used for getting number of cores. Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 23 1月, 2012 1 次提交
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由 Will Deacon 提交于
It turns out that the logical CPU mapping is useful even when !CONFIG_SMP for manipulation of devices like interrupt and power controllers when running a UP kernel on a CPU other than 0. This can happen when kexecing a UP image from an SMP kernel. In the future, multi-cluster systems running AMP configurations will require something similar for mapping cluster IDs, so it makes sense to decouple this logic in preparation for this support. Acked-by: NYang Bai <hamo.by@gmail.com> Acked-by: NMarc Zyngier <marc.zyngier@arm.com> Reported-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 16 1月, 2012 1 次提交
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由 Rob Herring 提交于
BSYM macro is only needed for assembly files and its usage in c files is wrong, so remove it. The linker will correctly set bit 0 for Thumb2 kernels. Signed-off-by: NRob Herring <rob.herring@calxeda.com> Cc: Dave Martin <dave.martin@linaro.org> Cc: Kukjin Kim <kgene.kim@samsung.com>
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- 16 11月, 2011 1 次提交
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由 Marc Zyngier 提交于
The GIC support code is heavily using the fact that hardware implementations are exposing banked registers. Unfortunately, it looks like at least one GIC implementation (EXYNOS) offers both the distributor and the CPU interfaces at different addresses, depending on the CPU. This problem is solved by allowing the distributor and CPU interface addresses to be per-cpu variables for the platforms that require it. The EXYNOS code is updated not to mess with the GIC internals while handling interrupts, and struct gic_chip_data is back to being private. The DT binding for the gic is updated to allow an optional "cpu-offset" value, which is used to compute the various base addresses. Finally, a new config option (GIC_NON_BANKED) is used to control this feature, so the overhead is only present on kernels compiled with support for EXYNOS. Tested on Origen (EXYNOS4) and Panda (OMAP4). Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: NRob Herring <rob.herring@calxeda.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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- 06 11月, 2011 1 次提交
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由 Kukjin Kim 提交于
The arch/arm/mach-exynos4 directory (CONFIG_ARCH_EXYNOS4) has made for plaforms based on EXYNOS4 SoCs. But since upcoming Samsung's SoCs such as EXYNOS5 (ARM Cortex A15) can reuse most codes in current mach-exynos4, one mach-exynos directory will be used for them. This patch changes to CONFIG_ARCH_EXYNOS (arch/arm/mach-exynos) but keeps original CONFIG_ARCH_EXYNOS4 in mach-exynos/Kconfig to avoid changing in driver side. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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