Hi,
On 09-11-16 11:21, Chen-Yu Tsai wrote:
Hi everyone,
This series adds basic PSCI support for the A80 to enable SMP on the
first cluster. This at least allows people to use more than one core.
The term "basic" is used because the series does not add support for
multi-cluster cache and power management.
The PSCI code is based on existing code for all the single cluster
SoCs, and the kernel patches for MCPM SMP I did some time ago.
Unfortunately only SMP works at this time. The last patch does not
actually work. While the system is indeed booted non-secure, tested
by trying to write to secure SRAM and the results not sticking, reads
from the GIC CPU interface shows that it's still returning the secure
copy of registers, and since we use a secure monitor FIQ to do core
power down, the FIQ gets passed to the kernel. The patch is included
so people with in-depth ARM knowledge could probably help work out
what is wrong.
Cools stuff, when I find some time I will review and merge
patches 1-9 to sunxi-next.
First a question though, do you see any chance that merging this might
get in the way of enabling support for both clusters in the future?
Since the interface between u-boot and the kernel here is well defined
(and outside our control) I guess in the worst case, we would need to
revert some bits of this series from u-boot if they turn out to be non
suitable, right?
Regards,
Hans
Regards
ChenYu
Chen-Yu Tsai (10):
ARM: PSCI: Set ARMV7_PSCI_NR_CPUS default to 8 for sun9i/A80
sunxi: Add CCI-400 and CPUCFG registers base address for sun9i/A80
sunxi: Add base address of secure SRAM B for sun9i/A80
sunxi: Use secure SRAM B for secure RAM for sun9i/A80
sunxi: Add PRCM register definition for sun9i/A80
sunxi: Add CPUCFG register definitions for sun9i/A80
sunxi: Add support for TZPC on sun9i/A80
sunxi: Add basic PSCI implementation for A80
sunxi: Enable PSCI on sun9i/A80
sunxi: Add PSCI core power off support for A80's first cluster
arch/arm/cpu/armv7/Kconfig | 1 +
arch/arm/cpu/armv7/sunxi/Makefile | 5 +
arch/arm/cpu/armv7/sunxi/psci-mcpm.c | 322 +++++++++++++++++++++++++
arch/arm/cpu/armv7/sunxi/tzpc.c | 6 +
arch/arm/include/asm/arch-sunxi/cpu_sun9i.h | 5 +
arch/arm/include/asm/arch-sunxi/cpucfg_sun9i.h | 51 ++++
arch/arm/include/asm/arch-sunxi/prcm_sun9i.h | 55 +++++
arch/arm/include/asm/arch-sunxi/tzpc.h | 4 +
arch/arm/mach-sunxi/board.c | 3 +-
board/sunxi/Kconfig | 4 +
include/configs/sun9i.h | 4 +
11 files changed, 459 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/cpu/armv7/sunxi/psci-mcpm.c
create mode 100644 arch/arm/include/asm/arch-sunxi/cpucfg_sun9i.h
create mode 100644 arch/arm/include/asm/arch-sunxi/prcm_sun9i.h
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