Initial commit: OpenHarmony-v4.0-ReleaseOpenHarmony-v4.0-Release

1 files changed, 79 insertions, 0 deletions

diff --git a/arch/mips/kernel/smp-up.c b/arch/mips/kernel/smp-up.c
new file mode 100644
index 000000000..525d3196f
--- /dev/null
+++ b/arch/mips/kernel/smp-up.c
@@ -0,0 +1,79 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006, 07 by Ralf Baechle (ralf@linux-mips.org)
+ *
+ * Symmetric Uniprocessor (TM) Support
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+/*
+ * Send inter-processor interrupt
+ */
+static void up_send_ipi_single(int cpu, unsigned int action)
+{
+        panic(KERN_ERR "%s called", __func__);
+}
+
+static inline void up_send_ipi_mask(const struct cpumask *mask,
+                                    unsigned int action)
+{
+        panic(KERN_ERR "%s called", __func__);
+}
+
+/*
+ *  After we've done initial boot, this function is called to allow the
+ *  board code to clean up state, if needed
+ */
+static void up_init_secondary(void)
+{
+}
+
+static void up_smp_finish(void)
+{
+}
+
+/*
+ * Firmware CPU startup hook
+ */
+static int up_boot_secondary(int cpu, struct task_struct *idle)
+{
+        return 0;
+}
+
+static void __init up_smp_setup(void)
+{
+}
+
+static void __init up_prepare_cpus(unsigned int max_cpus)
+{
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+static int up_cpu_disable(void)
+{
+        return -ENOSYS;
+}
+
+static void up_cpu_die(unsigned int cpu)
+{
+        BUG();
+}
+#endif
+
+const struct plat_smp_ops up_smp_ops = {
+        .send_ipi_single        = up_send_ipi_single,
+        .send_ipi_mask          = up_send_ipi_mask,
+        .init_secondary         = up_init_secondary,
+        .smp_finish             = up_smp_finish,
+        .boot_secondary         = up_boot_secondary,
+        .smp_setup              = up_smp_setup,
+        .prepare_cpus           = up_prepare_cpus,
+#ifdef CONFIG_HOTPLUG_CPU
+        .cpu_disable            = up_cpu_disable,
+        .cpu_die                = up_cpu_die,
+#endif
+};