ARM: shmobile: r8a7790 SMP prototype v5
Add SMP prototype support for r8a7790 by enabling
one cluster of either 4 x Cortex-A7 or 4 x Cortex-A15.
This patch only adds support for booting, at this point
no CPU Hotplug is included. In v5 both the big and the
LITTLE clusters are working with either architected timers
(in physical mode only for CA7) or CMT and broadcast timer.
On r8a7790 the MD6 pin control boot processor, and on the
Lager board SW8.7 can be used to select big or LITTLE.
In big boot mode the CPU cores will be configured as:
- CPU0, CPU1, CPU2, CPU3: enabled (CA15)
- CPU4, CPU5, CPU6, CPU7: disabled (CA7)
In LITTLE boot mode the CPU cores will be configured as:
- CPU0, CPU5, CPU6, CPU7: enabled (CA7)
- CPU1, CPU2, CPU3, CPU4: disabled (CA15)
Base addresses for RST and APMU are still hard coded
but DT will be used for them in future versions.
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
(cherry picked from commit 3c06875a3c994dc918b1a0e424fe404f3025c675)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Conflicts:
arch/arm/mach-shmobile/board-lager-reference.c
arch/arm/mach-shmobile/include/mach/r8a7790.h
7 files changed
