From: Rob Herring <rob.herring@xxxxxxxxxxx>
Cortex-A9 SCU based platforms use the same code for smp_init_cpus, so create
a common implementation for systems with an SCU.
Signed-off-by: Rob Herring <rob.herring@xxxxxxxxxxx>
---
arch/arm/include/asm/smp_scu.h | 1 +
arch/arm/kernel/smp_scu.c | 19 +++++++++++++++++++
2 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/arch/arm/include/asm/smp_scu.h b/arch/arm/include/asm/smp_scu.h
index 4eb6d00..6b03557 100644
--- a/arch/arm/include/asm/smp_scu.h
+++ b/arch/arm/include/asm/smp_scu.h
@@ -7,6 +7,7 @@
#ifndef __ASSEMBLER__
unsigned int scu_get_core_count(void __iomem *);
+void scu_init_cpus(void __iomem *);
void scu_enable(void __iomem *);
int scu_power_mode(void __iomem *, unsigned int);
#endif
diff --git a/arch/arm/kernel/smp_scu.c b/arch/arm/kernel/smp_scu.c
index a1e757c..e58b8c4 100644
--- a/arch/arm/kernel/smp_scu.c
+++ b/arch/arm/kernel/smp_scu.c
@@ -29,6 +29,25 @@ unsigned int __init scu_get_core_count(void __iomem *scu_base)
return (ncores & 0x03) + 1;
}
+void __init scu_init_cpus(void __iomem *scu_base)
+{
+ unsigned int i, ncores;
+
+ ncores = scu_get_core_count(scu_base);
+
+ /* sanity check */
+ if (ncores > NR_CPUS) {
+ printk(KERN_WARNING
+ "SCU: No. of cores (%d) greater than configured "
+ "maximum of %d - clipping\n",
+ ncores, NR_CPUS);
+ ncores = NR_CPUS;
+ }
+
+ for (i = 0; i < ncores; i++)
+ set_cpu_possible(i, true);
+}
+
/*
* Enable the SCU
*/
--
1.7.1
--
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