1 files changed, 129 insertions, 0 deletions
diff --git a/plat/freescale/common/sci/ipc.c b/plat/freescale/common/sci/ipc.c
new file mode 100755
index 00000000..e1650d25
--- /dev/null
+++ b/plat/freescale/common/sci/ipc.c
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2017 NXP
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * 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.
+ *
+ * Neither the name of NXP 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.
+ */
+
+#include <sci/scfw.h>
+#include <sci/ipc.h>
+#include <sci/rpc.h>
+#include <stdlib.h>
+
+#include "mx8_mu.h"
+
+void sc_call_rpc(sc_ipc_t ipc, sc_rpc_msg_t *msg, bool no_resp)
+{
+	sc_ipc_write(ipc, msg);
+	if (!no_resp)
+		sc_ipc_read(ipc, msg);
+}
+
+sc_err_t sc_ipc_open(sc_ipc_t *ipc, sc_ipc_id_t id)
+{
+	uint32_t base = id;
+	uint32_t i;
+	
+	/* Get MU base associated with IPC channel */
+	if ((ipc == NULL) || (base == 0))
+		return SC_ERR_IPC;
+
+	/* Init MU */
+	MU_Init(base);
+
+	/* Enable all RX interrupts */
+	for (i = 0; i < MU_RR_COUNT; i++) {
+		MU_EnableRxFullInt(base, i);
+	}
+
+	/* Return MU address as handle */
+	*ipc = (sc_ipc_t) id;
+
+	return SC_ERR_NONE;
+}
+
+void sc_ipc_close(sc_ipc_t ipc)
+{
+	uint32_t base = ipc;
+
+	if (base != 0)
+		MU_Init(base);
+}
+
+void sc_ipc_read(sc_ipc_t ipc, void *data)
+{
+	uint32_t base = ipc;
+	sc_rpc_msg_t *msg = (sc_rpc_msg_t*) data;
+	uint8_t count = 0;
+
+	/* Check parms */
+	if ((base == 0) || (msg == NULL))
+		return;
+
+	/* Read first word */
+	MU_ReceiveMsg(base, 0, (uint32_t*) msg);   
+	count++;
+
+	/* Check size */
+	if (msg->size > SC_RPC_MAX_MSG) {
+		*((uint32_t*) msg) = 0;
+		return;
+	}
+	
+	/* Read remaining words */
+	while (count < msg->size) {
+		MU_ReceiveMsg(base, count % MU_RR_COUNT,
+			&(msg->DATA.d32[count - 1]));   
+		count++;
+	}
+}
+
+void sc_ipc_write(sc_ipc_t ipc, void *data)
+{
+	sc_rpc_msg_t *msg = (sc_rpc_msg_t*) data;
+	uint32_t base = ipc;
+	uint8_t count = 0;
+
+	/* Check parms */
+	if ((base == 0) || (msg == NULL))
+		return;
+
+	/* Check size */
+	if (msg->size > SC_RPC_MAX_MSG)
+		return;
+
+	/* Write first word */
+	MU_SendMessage(base, 0, *((uint32_t*) msg));   
+	count++;
+	
+	/* Write remaining words */
+	while (count < msg->size) {
+		MU_SendMessage(base, count % MU_TR_COUNT,
+			msg->DATA.d32[count - 1]);   
+		count++;
+	}
+}
+