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authorSudeep Holla <sudeep.holla@arm.com>2017-05-18 17:09:59 +0100
committerRussell King <rmk+kernel@armlinux.org.uk>2017-05-23 17:26:08 +0100
commit29226b198bb26f8e23985d011a9301cee5550da8 (patch)
treea00024811353b58d2c1959851a9e090f3c18bfe3 /arch/arm/common
parent2ea659a9ef488125eb46da6eb571de5eae5c43f6 (diff)
downloadlinux-29226b198bb26f8e23985d011a9301cee5550da8.tar.bz2
ARM: 8675/1: MCPM: ensure not to enter __hyp_soft_restart from loopback and cpu_power_down
Commit 9da5ac236de6 ("ARM: soft-reboot into same mode that we entered the kernel") added support to enter the new kernel in the same processor mode as the previous one when we soft-reboot from one kernel into another by pass a flag to cpu_reset() so it knows what to do exactly. However it missed to make similar changes in MCPM code. Due to the missing flag, the CPUs enter HYP mode which is not supported with MCPM. MCPM works only in secure mode as it manages CCI. This patch aligns the cpu_reset call in MCPM with other changes in the above mentioned commit by making phys_reset_t to follow the prototype of cpu_reset(). Fixes: 9da5ac236de6 ("ARM: soft-reboot into same mode that we entered the kernel") Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/common')
-rw-r--r--arch/arm/common/mcpm_entry.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm/common/mcpm_entry.c b/arch/arm/common/mcpm_entry.c
index cf062472e07b..2b913f17d50f 100644
--- a/arch/arm/common/mcpm_entry.c
+++ b/arch/arm/common/mcpm_entry.c
@@ -235,7 +235,7 @@ int mcpm_cpu_power_up(unsigned int cpu, unsigned int cluster)
return ret;
}
-typedef void (*phys_reset_t)(unsigned long);
+typedef typeof(cpu_reset) phys_reset_t;
void mcpm_cpu_power_down(void)
{
@@ -300,7 +300,7 @@ void mcpm_cpu_power_down(void)
* on the CPU.
*/
phys_reset = (phys_reset_t)(unsigned long)__pa_symbol(cpu_reset);
- phys_reset(__pa_symbol(mcpm_entry_point));
+ phys_reset(__pa_symbol(mcpm_entry_point), false);
/* should never get here */
BUG();
@@ -389,7 +389,7 @@ static int __init nocache_trampoline(unsigned long _arg)
__mcpm_cpu_down(cpu, cluster);
phys_reset = (phys_reset_t)(unsigned long)__pa_symbol(cpu_reset);
- phys_reset(__pa_symbol(mcpm_entry_point));
+ phys_reset(__pa_symbol(mcpm_entry_point), false);
BUG();
}