Messages in this thread |  | | From | Gregory CLEMENT <> | Subject | [PATCH 0/4] Hot plug support for Armada 38x | Date | Thu, 23 Oct 2014 20:14:26 +0200 |
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Hi,
This patch set adds the hot plug and also kexec support for the Armada 38x Socs.
The first patch was done in order to have the same code between Armada XP and the Cortex A9 based mvebu SoCs. In order to ensure the the backward compatibility for the device tree, it is only a preliminary work for it.
The second patch moves the SCU power up sequence in a dedicated assembly function. It was done in order to reuse it in the 3rd patch.
The third patch fixes the secondary startup for the cortex A9 mvebu SoC. Indeed, the initial code was written with the assumption the SCU will be always power on, which is not only true especially in the kexec case.
These 2 patches may worth to be pushed to the stable kernel.
Then the last patch adds the CPU hotplug support for Armada 38x. I tested the hotplug using the /sys/devices/system/cpu/cpu1/online virtual file. I also tested the kexec feature and managed to switch to a new kernel using kexec.
Thanks,
Gregory
Gregory CLEMENT (4): ARM: mvebu: Clean-up the Armada XP support ARM: mvebu: Move SCU power up in a function ARM: mvebu: Fix secondary startup for Cortex A9 SoC ARM: mvebu: Implement CPU hotplug support for Armada 38x
arch/arm/mach-mvebu/armada-370-xp.h | 6 ----- arch/arm/mach-mvebu/board-v7.c | 4 +++ arch/arm/mach-mvebu/coherency.c | 1 - arch/arm/mach-mvebu/cpu-reset.c | 1 - arch/arm/mach-mvebu/headsmp-a9.S | 1 + arch/arm/mach-mvebu/platsmp-a9.c | 53 +++++++++++++++++++++++++++++++++++-- arch/arm/mach-mvebu/platsmp.c | 2 ++ arch/arm/mach-mvebu/pmsu.c | 3 +-- arch/arm/mach-mvebu/pmsu.h | 2 ++ arch/arm/mach-mvebu/pmsu_ll.S | 20 +++++++++----- 10 files changed, 74 insertions(+), 19 deletions(-)
-- 1.9.1
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