ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/arm/common/mcpm_platsmp.c b/marvell/linux/arch/arm/common/mcpm_platsmp.c
new file mode 100644
index 0000000..3e172f4
--- /dev/null
+++ b/marvell/linux/arch/arm/common/mcpm_platsmp.c
@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * linux/arch/arm/mach-vexpress/mcpm_platsmp.c
+ *
+ * Created by: Nicolas Pitre, November 2012
+ * Copyright: (C) 2012-2013 Linaro Limited
+ *
+ * Code to handle secondary CPU bringup and hotplug for the cluster power API.
+ */
+
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/spinlock.h>
+
+#include <asm/mcpm.h>
+#include <asm/smp.h>
+#include <asm/smp_plat.h>
+
+static void cpu_to_pcpu(unsigned int cpu,
+ unsigned int *pcpu, unsigned int *pcluster)
+{
+ unsigned int mpidr;
+
+ mpidr = cpu_logical_map(cpu);
+ *pcpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);
+ *pcluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
+}
+
+static int mcpm_boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+ unsigned int pcpu, pcluster, ret;
+ extern void secondary_startup(void);
+
+ cpu_to_pcpu(cpu, &pcpu, &pcluster);
+
+ pr_debug("%s: logical CPU %d is physical CPU %d cluster %d\n",
+ __func__, cpu, pcpu, pcluster);
+
+ mcpm_set_entry_vector(pcpu, pcluster, NULL);
+ ret = mcpm_cpu_power_up(pcpu, pcluster);
+ if (ret)
+ return ret;
+ mcpm_set_entry_vector(pcpu, pcluster, secondary_startup);
+ arch_send_wakeup_ipi_mask(cpumask_of(cpu));
+ dsb_sev();
+ return 0;
+}
+
+static void mcpm_secondary_init(unsigned int cpu)
+{
+ mcpm_cpu_powered_up();
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+
+static int mcpm_cpu_kill(unsigned int cpu)
+{
+ unsigned int pcpu, pcluster;
+
+ cpu_to_pcpu(cpu, &pcpu, &pcluster);
+
+ return !mcpm_wait_for_cpu_powerdown(pcpu, pcluster);
+}
+
+static bool mcpm_cpu_can_disable(unsigned int cpu)
+{
+ /* We assume all CPUs may be shut down. */
+ return true;
+}
+
+static void mcpm_cpu_die(unsigned int cpu)
+{
+ unsigned int mpidr, pcpu, pcluster;
+ mpidr = read_cpuid_mpidr();
+ pcpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);
+ pcluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
+ mcpm_set_entry_vector(pcpu, pcluster, NULL);
+ mcpm_cpu_power_down();
+}
+
+#endif
+
+static const struct smp_operations mcpm_smp_ops __initconst = {
+ .smp_boot_secondary = mcpm_boot_secondary,
+ .smp_secondary_init = mcpm_secondary_init,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_kill = mcpm_cpu_kill,
+ .cpu_can_disable = mcpm_cpu_can_disable,
+ .cpu_die = mcpm_cpu_die,
+#endif
+};
+
+void __init mcpm_smp_set_ops(void)
+{
+ smp_set_ops(&mcpm_smp_ops);
+}