arm64: reorganise smp_enable_ops

[firefly-linux-kernel-4.4.55.git] / arch / arm64 / kernel / cpu_ops.c

diff --git a/arch/arm64/kernel/cpu_ops.c b/arch/arm64/kernel/cpu_ops.c
new file mode 100644 (file)
index 0000000..e2652aa
--- /dev/null
+++ b/arch/arm64/kernel/cpu_ops.c
@@ -0,0 +1,47 @@
+/*
+ * CPU kernel entry/exit control
+ *
+ * Copyright (C) 2013 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <asm/cpu_ops.h>
+#include <linux/string.h>
+
+extern const struct cpu_operations smp_spin_table_ops;
+extern const struct cpu_operations cpu_psci_ops;
+
+const struct cpu_operations *cpu_ops[NR_CPUS];
+
+static const struct cpu_operations *supported_cpu_ops[] __initconst = {
+#ifdef CONFIG_SMP
+       &smp_spin_table_ops,
+       &cpu_psci_ops,
+#endif
+       NULL,
+};
+
+const struct cpu_operations * __init cpu_get_ops(const char *name)
+{
+       const struct cpu_operations **ops = supported_cpu_ops;
+
+       while (*ops) {
+               if (!strcmp(name, (*ops)->name))
+                       return *ops;
+
+               ops++;
+       }
+
+       return NULL;
+}