ARM: EXYNOS: add support get_core_count() for EXYNOS5250
The EXYNOS5250 has two Cortex-A15 cores and there's no
need to call scu_enable() in platform_smp_prepare_cpus()
because Cortex-A15 has no regarding scu register which
can be used for getting number of cores.
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
index 0f2035a..36c3984 100644
--- a/arch/arm/mach-exynos/platsmp.c
+++ b/arch/arm/mach-exynos/platsmp.c
@@ -166,7 +166,10 @@
void __iomem *scu_base = scu_base_addr();
unsigned int i, ncores;
- ncores = scu_base ? scu_get_core_count(scu_base) : 1;
+ if (soc_is_exynos5250())
+ ncores = 2;
+ else
+ ncores = scu_base ? scu_get_core_count(scu_base) : 1;
/* sanity check */
if (ncores > nr_cpu_ids) {
@@ -183,8 +186,8 @@
void __init platform_smp_prepare_cpus(unsigned int max_cpus)
{
-
- scu_enable(scu_base_addr());
+ if (!soc_is_exynos5250())
+ scu_enable(scu_base_addr());
/*
* Write the address of secondary startup into the