Commit c21af444 authored by Magnus Damm's avatar Magnus Damm Committed by Simon Horman

ARM: shmobile: smp: Add function to prioritize DT SMP

Add a function to check if other DT based method is available, and
if so return false to not hook up smp_ops from the machine vector.

This results in that DT-based SMP support has priority over older
C-based smp_ops code, and in case DT-based SMP support code does not
exist in the DTB then the old smp_ops code will still work as-is.
Signed-off-by: default avatarMagnus Damm <damm+renesas@opensource.se>
Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: default avatarSimon Horman <horms+renesas@verge.net.au>
parent 5f3bca0d
...@@ -10,6 +10,7 @@ extern void shmobile_smp_sleep(void); ...@@ -10,6 +10,7 @@ extern void shmobile_smp_sleep(void);
extern void shmobile_smp_hook(unsigned int cpu, unsigned long fn, extern void shmobile_smp_hook(unsigned int cpu, unsigned long fn,
unsigned long arg); unsigned long arg);
extern bool shmobile_smp_cpu_can_disable(unsigned int cpu); extern bool shmobile_smp_cpu_can_disable(unsigned int cpu);
extern bool shmobile_smp_init_fallback_ops(void);
extern void shmobile_boot_scu(void); extern void shmobile_boot_scu(void);
extern void shmobile_smp_scu_prepare_cpus(phys_addr_t scu_base_phys, extern void shmobile_smp_scu_prepare_cpus(phys_addr_t scu_base_phys,
unsigned int max_cpus); unsigned int max_cpus);
......
...@@ -36,3 +36,9 @@ bool shmobile_smp_cpu_can_disable(unsigned int cpu) ...@@ -36,3 +36,9 @@ bool shmobile_smp_cpu_can_disable(unsigned int cpu)
return true; /* Hotplug of any CPU is supported */ return true; /* Hotplug of any CPU is supported */
} }
#endif #endif
bool __init shmobile_smp_init_fallback_ops(void)
{
/* fallback on PSCI/smp_ops if no other DT based method is detected */
return platform_can_secondary_boot() ? true : false;
}
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