[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/bsp/lk/kernel/mutex.c b/src/bsp/lk/kernel/mutex.c
new file mode 100644
index 0000000..69b7f5d
--- /dev/null
+++ b/src/bsp/lk/kernel/mutex.c
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2008-2014 Travis Geiselbrecht
+ * Copyright (c) 2012-2012 Shantanu Gupta
+ *
+ * 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.
+ */
+
+/**
+ * @file
+ * @brief Mutex functions
+ *
+ * @defgroup mutex Mutex
+ * @{
+ */
+
+#include <kernel/mutex.h>
+#include <debug.h>
+#include <assert.h>
+#include <err.h>
+#include <kernel/thread.h>
+
+/**
+ * @brief Initialize a mutex_t
+ */
+void mutex_init(mutex_t *m)
+{
+ *m = (mutex_t)MUTEX_INITIAL_VALUE(*m);
+}
+
+/**
+ * @brief Destroy a mutex_t
+ *
+ * This function frees any resources that were allocated
+ * in mutex_init(). The mutex_t object itself is not freed.
+ */
+void mutex_destroy(mutex_t *m)
+{
+ DEBUG_ASSERT(m->magic == MUTEX_MAGIC);
+
+#if LK_DEBUGLEVEL > 0
+ if (unlikely(m->holder != 0 && get_current_thread() != m->holder))
+ panic("mutex_destroy: thread %p (%s) tried to release mutex %p it doesn't own. owned by %p (%s)\n",
+ get_current_thread(), get_current_thread()->name, m, m->holder, m->holder->name);
+#endif
+
+ THREAD_LOCK(state);
+ m->magic = 0;
+ m->count = 0;
+ wait_queue_destroy(&m->wait, true);
+ THREAD_UNLOCK(state);
+}
+
+/**
+ * @brief Mutex wait with timeout
+ *
+ * This function waits up to \a timeout ms for the mutex to become available.
+ * Timeout may be zero, in which case this function returns immediately if
+ * the mutex is not free.
+ *
+ * @return NO_ERROR on success, ERR_TIMED_OUT on timeout,
+ * other values on error
+ */
+status_t mutex_acquire_timeout(mutex_t *m, lk_time_t timeout)
+{
+ DEBUG_ASSERT(m->magic == MUTEX_MAGIC);
+
+#if LK_DEBUGLEVEL > 0
+ if (unlikely(get_current_thread() == m->holder))
+ panic("mutex_acquire_timeout: thread %p (%s) tried to acquire mutex %p it already owns.\n",
+ get_current_thread(), get_current_thread()->name, m);
+#endif
+
+ THREAD_LOCK(state);
+
+ status_t ret = NO_ERROR;
+ if (unlikely(++m->count > 1)) {
+ ret = wait_queue_block(&m->wait, timeout);
+ if (unlikely(ret < NO_ERROR)) {
+ /* if the acquisition timed out, back out the acquire and exit */
+ if (likely(ret == ERR_TIMED_OUT)) {
+ /*
+ * race: the mutex may have been destroyed after the timeout,
+ * but before we got scheduled again which makes messing with the
+ * count variable dangerous.
+ */
+ m->count--;
+ }
+ /* if there was a general error, it may have been destroyed out from
+ * underneath us, so just exit (which is really an invalid state anyway)
+ */
+ goto err;
+ }
+ }
+
+ m->holder = get_current_thread();
+
+err:
+ THREAD_UNLOCK(state);
+ return ret;
+}
+
+/**
+ * @brief Release mutex
+ */
+status_t mutex_release(mutex_t *m)
+{
+ DEBUG_ASSERT(m->magic == MUTEX_MAGIC);
+
+#if LK_DEBUGLEVEL > 0
+ if (unlikely(get_current_thread() != m->holder)) {
+ panic("mutex_release: thread %p (%s) tried to release mutex %p it doesn't own. owned by %p (%s)\n",
+ get_current_thread(), get_current_thread()->name, m, m->holder, m->holder ? m->holder->name : "none");
+ }
+#endif
+
+ THREAD_LOCK(state);
+
+ m->holder = 0;
+
+ if (unlikely(--m->count >= 1)) {
+ /* release a thread */
+ wait_queue_wake_one(&m->wait, true, NO_ERROR);
+ }
+
+ THREAD_UNLOCK(state);
+ return NO_ERROR;
+}
+