[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/bsp/lk/kernel/mp.c b/src/bsp/lk/kernel/mp.c
new file mode 100644
index 0000000..3b800c2
--- /dev/null
+++ b/src/bsp/lk/kernel/mp.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2014 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <kernel/mp.h>
+
+#include <stdlib.h>
+#include <debug.h>
+#include <assert.h>
+#include <trace.h>
+#include <arch/mp.h>
+#include <kernel/spinlock.h>
+
+#define LOCAL_TRACE 0
+
+#if WITH_SMP
+/* a global state structure, aligned on cpu cache line to minimize aliasing */
+struct mp_state mp __CPU_ALIGN;
+
+void mp_init(void)
+{
+}
+
+void mp_reschedule(mp_cpu_mask_t target, uint flags)
+{
+ uint local_cpu = arch_curr_cpu_num();
+
+ LTRACEF("local %d, target 0x%x\n", local_cpu, target);
+
+ /* mask out cpus that are not active and the local cpu */
+ target &= mp.active_cpus;
+
+ /* mask out cpus that are currently running realtime code */
+ if ((flags & MP_RESCHEDULE_FLAG_REALTIME) == 0) {
+ target &= ~mp.realtime_cpus;
+ }
+ target &= ~(1U << local_cpu);
+
+ LTRACEF("local %d, post mask target now 0x%x\n", local_cpu, target);
+
+ arch_mp_send_ipi(target, MP_IPI_RESCHEDULE);
+}
+
+void mp_set_curr_cpu_active(bool active)
+{
+ if (active)
+ atomic_or((volatile int *)&mp.active_cpus, 1U << arch_curr_cpu_num());
+ else
+ atomic_and((volatile int *)&mp.active_cpus, ~(1U << arch_curr_cpu_num()));
+}
+
+enum handler_return mp_mbx_reschedule_irq(void)
+{
+ uint cpu = arch_curr_cpu_num();
+
+ LTRACEF("cpu %u\n", cpu);
+
+ THREAD_STATS_INC(reschedule_ipis);
+
+ return (mp.active_cpus & (1U << cpu)) ? INT_RESCHEDULE : INT_NO_RESCHEDULE;
+}
+#endif
+
+// vim: set noexpandtab:
+