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Marek Szyprowski 587603bf49 ARM: 8847/1: pm: fix HYP/SVC mode mismatch when MCPM is used

[ Upstream commit ca70ea43f8 ]

MCPM does a soft reset of the CPUs and uses common cpu_resume() routine to
perform low-level platform initialization. This results in a try to install
HYP stubs for the second time for each CPU and results in false HYP/SVC
mode mismatch detection. The HYP stubs are already installed at the
beginning of the kernel initialization on the boot CPU (head.S) or in the
secondary_startup() for other CPUs. To fix this issue MCPM code should use
a cpu_resume() routine without HYP stubs installation.

This change fixes HYP/SVC mode mismatch on Samsung Exynos5422-based Odroid
XU3/XU4/HC1 boards.

Fixes: 3721924c81 ("ARM: 8081/1: MCPM: provide infrastructure to allow for MCPM loopback")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-01-29 10:24:18 +01:00

bL_switcher_dummy_if.c

ARM: 8743/1: bL_switcher: add MODULE_LICENSE tag

2018-02-25 11:05:44 +01:00

bL_switcher.c

arm/bL_switcher: Kill tick suspend hackery

2015-04-01 14:23:00 +02:00

dmabounce.c

dma-mapping: use unsigned long for dma_attrs

2016-08-04 08:50:07 -04:00

firmware.c

ARM: Add interface for registering and calling firmware-specific operations