1b55353c9214788b0d0797a5fd4585af1557a12c |
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20-Jun-2014 |
Geert Uytterhoeven <geert+renesas@glider.be> |
ARM: shmobile: Move r8a7779.h Change location of r8a7779.h so it can be included as "r8a7779.h" instead of the old style <mach/r8a7779.h> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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585c09df3738d4f72cee36eb0b975351fd9a339a |
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17-Jun-2014 |
Magnus Damm <damm+renesas@opensource.se> |
ARM: shmobile: Move pm-rcar.h, cleanup r8a7779 case Change location of pm-rcar.h so it can be used as #include "pm-rcar.h" instead of the old style #include <mach/pm-rcar.h>. Also clean up the r8a7779 case to move some unused header file cruft into a C file. Signed-off-by: Magnus Damm <damm+renesas@opensource.se> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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fd44aa5e570d1d8c7d361dcbf94c2b8cd25cfe92 |
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17-Jun-2014 |
Magnus Damm <damm+renesas@opensource.se> |
ARM: shmobile: Move common.h Change location for common.h so it can be used as #include "common.h" instead of the old style #include <mach/common.h>. Signed-off-by: Magnus Damm <damm+renesas@opensource.se> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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a6557eb795edcf7832b5278a11842c4ca302f4af |
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15-Jan-2014 |
Magnus Damm <damm@opensource.se> |
ARM: shmobile: Break out R-Car SYSC PM code Break out the R-Car SYSC power management code from the r8a7779 SoC code. With this new shared R-Car SYSC code base it is possible to hook in Generation 2 SoCs as well. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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deb4928ea39c5eeef1c9f4562b5cee71f06a31ad |
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14-Sep-2013 |
Magnus Damm <damm@opensource.se> |
ARM: shmobile: Let r8a7779 rely on SCU CPU notifier Now when CPU notifiers are used for SCU boot vector setup shmobile_smp_scu_boot_secondary() is no longer needed. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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e9e7c4fbf468e205387b21463dddacfe44da2d9a |
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31-Jul-2013 |
Magnus Damm <damm@opensource.se> |
ARM: shmobile: Use shared SCU CPU Hotplug code on r8a7779 Update the r8a7779 specific CPU Hotplug code to make use of the recently introduced shared SCU functions. The r8a7779 power domain hardware requires special power down handling at ->kill() time. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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0ca2894b5a9007091ad1a4d82b9f3132d4dd9410 |
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31-Jul-2013 |
Magnus Damm <damm@opensource.se> |
ARM: shmobile: Use shared SCU SMP boot code on r8a7779 Use shared SCU code on r8a7779 for SMP boot. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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afad20105a58c06407ad9ad85c1cd9ca79d99e00 |
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24-Jul-2013 |
Simon Horman <horms+renesas@verge.net.au> |
ARM: shmobile: r8a7779: Rely on DT for SMP CPU info Remove r8a7779 specific ->smp_init_cpus() callback and instead of relying on shmobile_smp_init_cpus() simply use DT for CPU core information. Based on work for the sh73a0 by Magnus Damm. Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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8bd26e3a7e49af2697449bbcb7187a39dc85d672 |
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17-Jun-2013 |
Paul Gortmaker <paul.gortmaker@windriver.com> |
arm: delete __cpuinit/__CPUINIT usage from all ARM users 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 5e427ec2d0 ("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: Paul Gortmaker <paul.gortmaker@windriver.com>
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af642310aaa491df6dabcca96bdf0d1b8465a834 |
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10-Jun-2013 |
Magnus Damm <damm@opensource.se> |
ARM: shmobile: r8a7779 SMP with SCU boot fn and args Let r8a7779 make use of shmobile_boot_fn and shmobile_boot_arg together with shmobile_boot_scu and the SCU base address. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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c0114709ed85a5693eb74acdfa03d94f7f12e5b8 |
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14-Jan-2013 |
Catalin Marinas <catalin.marinas@arm.com> |
irqchip: gic: Perform the gic_secondary_init() call via CPU notifier 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: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Simon Horman <horms+renesas@verge.net.au> Tested-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Tested-by: Dinh Nguyen <dinguyen@altera.com> Acked-by: Nicolas Pitre <nico@linaro.org> Tested-by: Marc 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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fd0865c3f7054d9068007fd280681cb4ea7929a1 |
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18-Feb-2013 |
Magnus Damm <damm@opensource.se> |
ARM: shmobile: Rearrange r8a7779 cpu hotplug code Update the r8a7779 SMP code and CPU Hotplug in particular to follow the same style as sh73a0. This means dropping __maybe_unused for #ifdef CONFIG_HOTPLUG_CPU. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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8bbcd729d219ca7cdc06ad3b0dea161c4c41b807 |
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18-Feb-2013 |
Magnus Damm <damm@opensource.se> |
ARM: shmobile: Update r8a7779 to use scu_power_mode() Update the SMP code for R8A7779 to make use of the shared SCU function scu_power_mode() together with the early setup code in shmobile_secondary_vector_scu. With this patch in place the secondary CPUs modify the SCU setting during early boot instead of letting other CPUs deal with the coherency setting before boot. In other words, we used to setup coherency before boot in r8a7779_boot_secondary() but that bit is now instead handled by the code in shmobile_secondary_vector_scu. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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bbf2627c77355ee07cb589904efaf814cfc223d1 |
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18-Feb-2013 |
Magnus Damm <damm@opensource.se> |
ARM: shmobile: Update r8a7779 to check SCU for hotplug Update the r8a7779 CPU Hotplug code to use SCU PSR to wait for the target CPU core. Previously the shared code in hotplug.c was used to let cpu_kill() wait for cpu_die(). With this change in place the r8a7779 SMP code does not depend on hotplug.c anymore. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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abf88136f73da52162d7e70bd1d8d4294c08bf1e |
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18-Feb-2013 |
Magnus Damm <damm@opensource.se> |
ARM: shmobile: Use R8A7779_SCU_BASE with TWD Rework the IOMEM() usage for the SCU base address in the case of r8a7779. Adjusts the TWD to use R8A7779_SCU_BASE. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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4c8228455d1008136d748e6973dd72578bab4697 |
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13-Feb-2013 |
Magnus Damm <damm@opensource.se> |
ARM: shmobile: Common shmobile_scu_base in headsmp-scu.S Update the code in headsmp-scu.S to use a global shmobile_scu_base variable both for convenient SCU base address storage and for the early SCU setup code in shmobile_secondary_vector_scu. With this patch applied r8a7779, sh73a0 and EMEV2 all make use of the global shmobile_scu_base variable. However only sh73a0 makes use of the SCU bring up code in shmobile_secondary_vector_scu. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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3b94afa38350ad5b592df5b6539a20a253e04b53 |
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13-Feb-2013 |
Magnus Damm <damm@opensource.se> |
ARM: shmobile: Kill off r8a7779 scu_base_addr() function Replace scu_base_addr() with a static shmobile_scu_base variable and introduce R8A7779_SCU_BASE. Later in the series the shmobile_scu_base variable will be made into a global variable so this is preparation only. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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0ae56a951de0efbf36a51de5b2e91db10425c771 |
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12-Feb-2013 |
Magnus Damm <damm@opensource.se> |
ARM: shmobile: Remove r8a7779_get_core_count() Reduce the number of lines of code in smp-r8a7779.c by getting rid of the r8a7779_get_core_count() function. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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520f7bd73354f003a9a59937b28e4903d985c420 |
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27-Dec-2012 |
Rob Herring <rob.herring@calxeda.com> |
irqchip: Move ARM gic.h to include/linux/irqchip/arm-gic.h 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: Rob 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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872b59832d920ba7398b7cf81b5d8fc9088f8259 |
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13-Nov-2012 |
Simon Horman <horms@verge.net.au> |
Revert "ARM: shmobile: r8a7779: Replace modify_scu_cpu_psr with scu_power_mode" This reverts commit cdc7594e5c5f7509a86b205edeedc58d72dd3999. The code changes the flags of the wrong cpus - which breaks the whole bootup of secondary CPUs. Cc: Bastian Hecht <hechtb@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au>
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cdc7594e5c5f7509a86b205edeedc58d72dd3999 |
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25-Oct-2012 |
Bastian Hecht <hechtb@googlemail.com> |
ARM: shmobile: r8a7779: Replace modify_scu_cpu_psr with scu_power_mode We can remove the extra code of modify_scu_cpu_psr() and use the cleaner generic ARM helper scu_power_mode(). As every CPU only deals with its own power register and scu_power_mode() operates with 8-bit accesses, we save the locking overhead too. Signed-off-by: Bastian Hecht <hechtb@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au>
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a62580e58065dc00430b16ced6e7a00837b8323f |
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08-Sep-2011 |
Marc Zyngier <marc.zyngier@arm.com> |
ARM: SoC: convert shmobile SMP to SMP operations Convert shmobile SMP platforms to use struct smp_operations to provide their SMP and CPU hotplug operations. Cc: Paul Mundt <lethal@linux-sh.org> Cc: Magnus Damm <magnus.damm@gmail.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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b759bd114e27fbb940fb44fd16552e8f4acd831e |
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10-May-2012 |
Magnus Damm <damm@opensource.se> |
ARM / mach-shmobile: r8a7779 SMP TWD boot regression fix Fix SMP TWD boot regression on r8a7779 based platforms caused by: 4200b16 ARM: shmobile: convert to twd_local_timer_register() interface After the merge of the above commit it has been impossible to boot r8a7779 based SoCs with SMP enabled and CONFIG_HAVE_ARM_TWD=y. The kernel crashes at smp_init_cpus() timing which is before the console has been initialized, so to the user this looks like a kernel lock up without any particular error message. This patch fixes the regression on r8a7779 by moving the TWD registration code from smp_init_cpus() to sys_timer->init() time. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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a2a47ca36642e3995e982957bc42678cf11ca6ac |
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10-Mar-2012 |
Rob Herring <rob.herring@calxeda.com> |
ARM: __io abuse cleanup Several platforms incorrectly use __io() for casting to 'void __iomem *'. This converts all of those uses to use the common IOMEM macro. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: linux-sh@vger.kernel.org Acked-by: Arnd Bergmann <arnd@arndb.de>
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4200b16d58cd34ff8e1616d8ed77417f8fc44864 |
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10-Jan-2012 |
Marc Zyngier <marc.zyngier@arm.com> |
ARM: shmobile: convert to twd_local_timer_register() interface Add support for the new smp_twd runtime registration interface to the shmobile platforms, and remove the old compile-time support. Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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eb50439b92b6298bf209a982f295ba9c0f7cb30b |
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20-Jan-2012 |
Will Deacon <will.deacon@arm.com> |
ARM: 7293/1: logical_cpu_map: decouple CPU mapping from SMP 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: Yang Bai <hamo.by@gmail.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Reported-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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f40aaf6da14a4043d6361e0c7d74ada18e866059 |
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10-Jan-2012 |
Magnus Damm <damm@opensource.se> |
ARM: mach-shmobile: r8a7779 SMP support V3 This patch contains r8a7779 SMP support V3 - now including CPU hotplug offine and online support. The r8a7779 power domain code is tied together with SMP glue code which allows us to control the power domains via CPU hotplug. At this point the kernel boots with the 4 Cortex-A9 cores in SMP mode and all CPU cores except CPU0 can be hotplugged. The code in platsmp.c is quite far from pretty, but it is kept like that intentionally to avoid creating layers of code that will go away in the near future anyway. The code needs to be updated when some per-SoC handling code will be added to the ARM architecture, see the following patch for more information: "[RFC PATCH 0/3] Per SoC descriptor" Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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