Commit graph

3 commits

Author SHA1 Message Date
Magnus Damm
1229835ccb ARM: mach-shmobile: Flush caches in platform_cpu_die()
Add cache flushing code to the SH-Mobile specific CPU hotplug
implementation. While at it, add a cpu mask to make sure the
cache flushing code is finished in platform_cpu_die() before
letting the SoC-specific code in shmobile_platform_cpu_kill()
proceed with turning off power.

Without this code CPU hotplug offline fails when cache is
enabled on Cortex-A9 based SoCs.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-09 10:37:29 +09:00
Magnus Damm
8b30679699 ARM: mach-shmobile: Allow SoC specific CPU kill code
Add the function shmobile_platform_kill_cpu() to allow
SoC specific code to tie in their CPU shutdown code.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-09 10:37:24 +09:00
Magnus Damm
1c51ed4fb9 ARM: mach-shmobile: SMP base support
Add SMP base support for R-Mobile / SH-Mobile processors.

This patch contains all base code to support CONFIG_SMP
regardless of ARCH_SHMOBILE processor type. Both local timer
and CPU hotplug are supported, but no processor specific
code is included.

At this point only the default behavior is in place, so
a single core will always be used even though CONFIG_SMP
is enabled on multicore systems.

The SMP Kconfig entry for arch/arm/Kconfig is excluded from
this patch to simplify merging.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-12-14 18:15:44 +09:00