[PATCH v9 03/12] ARM: EXYNOS: remove secondary startup initialization from smp_prepare_cpus

Pankaj Dubey pankaj.dubey at samsung.com
Thu Mar 30 06:16:57 PDT 2017


We are taking care of setting secondary cpu boot address in
exynos_boot_secondary just before sending ipi to secondary CPUs,
so we can safely remove this setting from smp_prepare_cpus.

Signed-off-by: Pankaj Dubey <pankaj.dubey at samsung.com>
---
 arch/arm/mach-exynos/platsmp.c | 26 --------------------------
 1 file changed, 26 deletions(-)

diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
index 5a03bff..cb6d199 100644
--- a/arch/arm/mach-exynos/platsmp.c
+++ b/arch/arm/mach-exynos/platsmp.c
@@ -387,38 +387,12 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle)
 
 static void __init exynos_smp_prepare_cpus(unsigned int max_cpus)
 {
-	int i;
-
 	exynos_sysram_init();
 
 	exynos_set_delayed_reset_assertion(true);
 
 	if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9)
 		scu_enable(scu_base_addr());
-
-	/*
-	 * Write the address of secondary startup into the
-	 * system-wide flags register. The boot monitor waits
-	 * until it receives a soft interrupt, and then the
-	 * secondary CPU branches to this address.
-	 *
-	 * Try using firmware operation first and fall back to
-	 * boot register if it fails.
-	 */
-	for (i = 1; i < max_cpus; ++i) {
-		unsigned long boot_addr;
-		u32 mpidr;
-		u32 core_id;
-		int ret;
-
-		mpidr = cpu_logical_map(i);
-		core_id = MPIDR_AFFINITY_LEVEL(mpidr, 0);
-		boot_addr = __pa_symbol(exynos4_secondary_startup);
-
-		ret = exynos_set_boot_addr(core_id, boot_addr);
-		if (ret)
-			break;
-	}
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
-- 
2.7.4




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