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ARM: EXYNOS: add support get_core_count() for EXYNOS5250

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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>
This commit is contained in:
Kukjin Kim 2012-01-25 15:35:57 +09:00
parent 330c90a54c
commit e9bba61522
1 changed files with 6 additions and 3 deletions
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9
arch/arm/mach-exynos/platsmp.c
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@ -166,7 +166,10 @@ void __init smp_init_cpus(void)
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 smp_init_cpus(void)
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