1 files changed, 115 insertions, 0 deletions
diff --git a/middleware/multicore/open-amp/porting/imx7d_m4/platform.c b/middleware/multicore/open-amp/porting/imx7d_m4/platform.c
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+++ b/middleware/multicore/open-amp/porting/imx7d_m4/platform.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2015, Freescale Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of Mentor Graphics Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**************************************************************************
+ * FILE NAME
+ *
+ *       platform.c
+ *
+ * DESCRIPTION
+ *
+ *       This file is the Implementation of IPC hardware layer interface
+ *       for Freescale i.MX7 Dual platform.
+ *
+ **************************************************************************/
+
+#include "device_imx.h"
+#include "platform.h"
+#include "plat_porting.h"
+#include "mu_imx.h"
+
+extern void freertos_env_isr(int vector);
+
+// uint32_t channel_id;
+/*--------------------------- Globals ---------------------------------- */
+
+struct hil_platform_ops proc_ops = {
+    .enable_interrupt	= _enable_interrupt,
+    .notify             = _notify,
+    .boot_cpu           = _boot_cpu,
+    .shutdown_cpu       = _shutdown_cpu,
+};
+
+void rpmsg_handler(void)
+{
+    uint32_t msg, channel;
+
+    if (MU_TryReceiveMsg(MU0_B, MU_RPMSG_CHANNEL, &msg) == kStatus_MU_Success) {
+        channel = msg >> 16;
+        freertos_env_isr(channel);
+    }
+
+    return;
+}
+
+int _enable_interrupt(struct proc_vring *vring_hw) {        /*enable_interrupt*/
+    /* Register ISR*/
+    env_register_isr(vring_hw->intr_info.vect_id, vring_hw, platform_isr);
+
+    /*
+     * Prepare the MU Hardware, enable channel 1 interrupt
+     */
+    MU_EnableRxFullInt(MU0_B, MU_RPMSG_CHANNEL);
+
+    return 0;
+}
+
+void _notify(int cpu_id, struct proc_intr *intr_info)
+{
+    /*
+     * As Linux suggests, use MU->Data Channle 1 as communication channel
+     */
+    uint32_t msg = (intr_info->vect_id) << 16;
+    MU_SendMsg(MU0_B, MU_RPMSG_CHANNEL, msg);
+}
+
+
+int _boot_cpu(int cpu_id, unsigned int load_addr)
+{
+    return 0;
+}
+
+void _shutdown_cpu(int cpu_id)
+{
+}
+
+void platform_isr(int vect_id, void *data)
+{
+    hil_isr(((struct proc_vring *) data));
+}
+
+void platform_interrupt_enable()
+{
+    NVIC_EnableIRQ(MU_INT_M4_IRQn);
+}
+
+void platform_interrupt_disable()
+{
+    NVIC_DisableIRQ(MU_INT_M4_IRQn);
+}