From e9bba61522a7650b0e4d9952bb3ece81d473a52c Mon Sep 17 00:00:00 2001 From: Kukjin Kim Date: Wed, 25 Jan 2012 15:35:57 +0900 Subject: [PATCH] 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 --- arch/arm/mach-exynos/platsmp.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c index 0f2035a1eb6e..36c3984aaa47 100644 --- a/arch/arm/mach-exynos/platsmp.c +++ b/arch/arm/mach-exynos/platsmp.c @@ -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 -- 2.34.1