#
8d17004e |
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31-Aug-2023 |
Geert Uytterhoeven <geert+renesas@glider.be> |
ARM: shmobile: r8a7779: Reserve boot area when SMP is enabled CPU core bringup on R-Car H1 uses the ARM Reset Vector Address Register (AVECR) to specify the base address and size of the boot area of the System CPU. With this enabled, when the System CPU accesses a physical address in the range from zero up to the configured size, the top address bits are replaced by those specified in the AVECR register. Hence any device residing in this low part of physical address space cannot be accessed, Prevent conflicts by reserving this memory region using request_mem_region(). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/924961188abdf2adb52167edb7ed848a6efcca39.1693409184.git.geert+renesas@glider.be
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#
d4a617c9 |
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17-Nov-2020 |
Geert Uytterhoeven <geert+renesas@glider.be> |
ARM: shmobile: Stop using __raw_*() I/O accessors There is no reason to keep on using the __raw_{read,write}l() I/O accessors in Renesas ARM platform code. Switch to using the plain {read,write}l() I/O accessors, to have a chance that this works on big-endian. Suggested-by: Arnd Bergmann <arnd@kernel.org> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Link: https://lore.kernel.org/r/20201117142447.2205664-1-geert+renesas@glider.be
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#
617ff9e6 |
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17-Nov-2020 |
Geert Uytterhoeven <geert+renesas@glider.be> |
ARM: shmobile: r8a7779: Use ioremap() to map SMP registers Replace using the legacy IOMEM() macro to map the ARM Reset Vector Address Register (AVECR) by ioremap(). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20201117103022.2136527-4-geert+renesas@glider.be
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#
8fc0d470 |
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06-Jul-2018 |
Arnd Bergmann <arnd@arndb.de> |
ARM: shmobile: r8a7779: hide unused r8a7779_platform_cpu_kill After the cleanup in r8a7779_smp_prepare_cpus(), the only remaining caller of r8a7779_platform_cpu_kill() is in an ifdef, which leads to a build warning without CONFIG_HOTPLUG_CPU: arch/arm/mach-shmobile/smp-r8a7779.c:26:12: error: 'r8a7779_platform_cpu_kill' defined but not used [-Werror=unused-function] This moves the function inside of that #ifdef to avoid the warning. Fixes: 62f55ce683e3 ("ARM: shmobile: r8a7779: Stop powering down secondary CPUs during early boot") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
c44e182e |
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13-Jun-2018 |
Wolfram Sang <wsa+renesas@sang-engineering.com> |
ARM: shmobile: convert to SPDX identifier Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
16acd53b |
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30-May-2018 |
Geert Uytterhoeven <geert+renesas@glider.be> |
ARM: shmobile: r8a7779: Remove explicit SYSC config and init If the R-Car H1 system controller is described in DT, the rcar-sysc driver configures SYSCIER and SYSCIMR based on the SoC-specific power area definitions in r8a7779-sysc. The platform code still passed this information to the rcar-sysc driver, for compatibility with old DTBs predating commit b2df3aa487395a1b ("ARM: dts: r8a7779: Add SYSC PM Domains") in v4.7. The time has come to drop backwards compatibility, and delegate everything to the DT enabled rcar-sysc driver. After stopping powering down secondary CPUs during early boot, there is no longer a need to force an early initialization of the rcar-sysc driver. It will be initialized in time for secondary CPU bringup by its early_initcall(). Hence all explicit SYSC configuration and initialization can be removed from the R-Car H1 platform code. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
9d65c891 |
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30-May-2018 |
Geert Uytterhoeven <geert+renesas@glider.be> |
ARM: shmobile: r8a7779: Use rcar_sysc_power_{down,up}_cpu() The r8a7779 SMP code calls rcar_sysc_power_{down,up}() to control power to the SYSC power areas containing CPUs. This requires passing full CPU power area parameter blocks. Migrate the code to call the new rcar_sysc_power_{down,up}_cpu() helpers, which just take a CPU index, and use the SYSC power area definitions from the r8a7779-sysc driver. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
62f55ce6 |
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30-May-2018 |
Geert Uytterhoeven <geert+renesas@glider.be> |
ARM: shmobile: r8a7779: Stop powering down secondary CPUs during early boot At .smp_prepare_cpus() time, CPUs 1-3 are still powered down: - The bootloader doesn't enable CPUs 1-3, - Non-boot CPUs are disabled by kexec before starting the new kernel. Hence there is no need to try to power them down again, as it will fail silently with -EIO anyway. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
be32bcbb |
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20-Apr-2016 |
Geert Uytterhoeven <geert+renesas@glider.be> |
soc: renesas: Move pm-rcar to drivers/soc/renesas/rcar-sysc Move the pm-rcar driver from arch/arm/mach-shmobile/ to drivers/soc/renesas/, and its header file to include/linux/soc/renesas/, so it can be shared between arm32 (R-Car H1 and Gen2) and arm64 (R-Car Gen3). Rename it to rcar-sysc as it's really a driver for the R-Car System Controller (SYSC). Kill the intermediate PM_RCAR config symbol, as it's not user configurable anymore, and to prepare for SoC-specific make rules. Add the missing #include <linux/types.h> to rcar-sysc.h, which was exposed by different include order. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
8701d808 |
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28-Jan-2016 |
Geert Uytterhoeven <geert+renesas@glider.be> |
ARM: shmobile: Consolidate SCU mapping code Currently the SCU registers are mapped in SoC-specific code, using different methods, all involving the static mapping set up from machine_desc.map_io(): - On emev2, a static (non-identity) mapping is used, with ioremap(). As the static mapping uses the MT_DEVICE type, ioremap() reuses it, and the returned virtual address is suitable for passing to shmobile_smp_hook(), - On sh73a0 and r8a7779, a static identity mapping is used, with the legacy IOMEM() macro. As the static mapping uses the MT_DEVICE_NONSHARED type, replacing IOMEM() by ioremap() would create a new mapping, whose virtual address cannot be passed to shmobile_smp_hook(). Move the mapping of the SCU registers from SoC-specific code to common code, always using ioremap(). To work in the absence of a static mapping, this requires passing the physical SCU base address to shmobile_smp_hook(). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
b1568d80 |
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28-Jan-2016 |
Geert Uytterhoeven <geert+renesas@glider.be> |
ARM: shmobile: r8a7779: Remove remainings of removed SCU boot setup code Commit 0ca2894b5a900709 ("ARM: shmobile: Use shared SCU SMP boot code on r8a7779") obsoleted the r8a7779-specific SCU boot code, but forgot to remove the setup of shmobile_boot_fn and shmobile_boot_arg, which is overwritten by shmobile_smp_scu_prepare_cpus(). Note that shmobile_scu_base wasn't initialized at that point yet anyway. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
cdef6b0b |
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28-Jan-2016 |
Geert Uytterhoeven <geert+renesas@glider.be> |
ARM: shmobile: r8a7779: Remove remainings of removed SCU boot setup code Commit 0ca2894b5a900709 ("ARM: shmobile: Use shared SCU SMP boot code on r8a7779") obsoleted the r8a7779-specific SCU boot code, but forgot to remove the setup of shmobile_boot_fn and shmobile_boot_arg, which is overwritten by shmobile_smp_scu_prepare_cpus(). Note that shmobile_scu_base wasn't initialized at that point yet anyway. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
75305275 |
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14-Nov-2015 |
Masahiro Yamada <yamada.masahiro@socionext.com> |
ARM: use const and __initconst for smp_operations These smp_operations structures are not over-written, so add "const" qualifier and replace __initdata with __initconst. Also, add "static" where it is possible. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Moritz Fischer <moritz.fischer@ettus.com> Acked-by: Stephen Boyd <sboyd@codeaurora.org> # qcom part Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Wei Xu <xuwei5@hisilicon.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Shawn Guo <shawnguo@kernel.org> Acked-by: Matthias Brugger <matthias.bgg@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Liviu Dudau <Liviu.Dudau@arm.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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#
c99cd90d |
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16-Jul-2015 |
Magnus Damm <damm+renesas@opensource.se> |
ARM: shmobile: r8a7779: Remove legacy SoC code Now when the Marzen legacy board code is gone this patch removes the unused r8a7779 legacy SoC code. Signed-off-by: Magnus Damm <damm+renesas@opensource.se> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
5afcd90f |
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04-Jun-2015 |
Geert Uytterhoeven <geert+renesas@glider.be> |
ARM: shmobile: r8a7779: Make struct rcar_sysc_ch const Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
fd9454ab |
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13-Feb-2015 |
Stephen Boyd <sboyd@codeaurora.org> |
ARM: shmobile: r8a7779: Remove redundant cpu_disable implementation By default only the non-boot CPUs can be hotplugged if the smp_operations structure doesn't have the cpu_disable function pointer set. r8a7779_cpu_disable() implements the same logic, only non-boot CPUs can be hotplugged, so it's redundant to override the default behavior. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Magnus Damm <damm+renesas@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
1dc13eee |
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16-Dec-2014 |
Magnus Damm <damm+renesas@opensource.se> |
ARM: shmobile: r8a7779: No TWD setup in C for Multiplatform Skip the TWD setup in C for r8a7779 Multiplatform. We should use DTS for the TWD device anyway. Signed-off-by: Magnus Damm <damm+renesas@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
335204df |
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26-Oct-2014 |
Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> |
ARM: shmobile: Remove FSF address from copyright headers The information is already included in the COPYING file in the kernel sources root directory, we don't want to modify all source files when the FSF will move to a new address, and I'm tired of seeing the related checkpatch.pl warnings. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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#
1b55353c |
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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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#
585c09df |
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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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#
fd44aa5e |
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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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#
a6557eb7 |
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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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#
deb4928e |
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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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#
e9e7c4fb |
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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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#
0ca2894b |
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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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#
afad2010 |
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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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#
8bd26e3a |
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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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#
af642310 |
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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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#
c0114709 |
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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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#
fd0865c3 |
|
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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#
8bbcd729 |
|
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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#
bbf2627c |
|
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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#
abf88136 |
|
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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#
4c822845 |
|
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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#
3b94afa3 |
|
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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#
0ae56a95 |
|
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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#
520f7bd7 |
|
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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872b5983 |
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12-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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cdc7594e |
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24-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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a62580e5 |
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08-Sep-2011 |
Marc Zyngier <maz@kernel.org> |
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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b759bd11 |
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09-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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a2a47ca3 |
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09-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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4200b16d |
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10-Jan-2012 |
Marc Zyngier <maz@kernel.org> |
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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eb50439b |
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19-Jan-2012 |
Will Deacon <will@kernel.org> |
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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f40aaf6d |
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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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