1 files changed, 81 insertions, 0 deletions
diff --git a/plat/freescale/common/sci/mx8_mu.c b/plat/freescale/common/sci/mx8_mu.c
new file mode 100644
index 00000000..e983caef
--- /dev/null
+++ b/plat/freescale/common/sci/mx8_mu.c
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+/*
+ * 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 <mmio.h>
+#include "mx8_mu.h"
+
+void MU_EnableRxFullInt(uint32_t base, uint32_t index)
+{
+	uint32_t reg = mmio_read_32(base + MU_ACR_OFFSET1);
+
+	reg &= ~(MU_CR_GIRn_MASK1 | MU_CR_NMI_MASK1);
+	reg |= MU_CR_RIE0_MASK1 >> index;
+	mmio_write_32(base + MU_ACR_OFFSET1, reg);
+}
+
+void MU_EnableGeneralInt(uint32_t base, uint32_t index)
+{
+	uint32_t reg = mmio_read_32(base + MU_ACR_OFFSET1);
+
+	reg &= ~(MU_CR_GIRn_MASK1 | MU_CR_NMI_MASK1);
+	reg |= MU_CR_GIE0_MASK1 >> index;
+	mmio_write_32(base + MU_ACR_OFFSET1, reg);
+}
+
+void MU_SendMessage(uint32_t base, uint32_t regIndex, uint32_t msg)
+{
+	uint32_t mask = MU_SR_TE0_MASK1 >> regIndex;
+
+	/* Wait TX register to be empty. */
+	while (!(mmio_read_32(base + MU_ASR_OFFSET1) & mask))
+		;
+	mmio_write_32(base + MU_ATR0_OFFSET1 + (regIndex * 4), msg);
+}
+
+void MU_ReceiveMsg(uint32_t base, uint32_t regIndex, uint32_t *msg)
+{
+	uint32_t mask = MU_SR_RF0_MASK1 >> regIndex;
+
+	/* Wait RX register to be full. */
+	while (!(mmio_read_32(base + MU_ASR_OFFSET1) & mask))
+		;
+	*msg = mmio_read_32(base + MU_ARR0_OFFSET1 + (regIndex * 4));
+}
+
+void MU_Init(uint32_t base)
+{
+	uint32_t reg;
+
+	reg = mmio_read_32(base + MU_ACR_OFFSET1);
+	/* Clear GIEn, RIEn, TIEn, GIRn and ABFn. */
+	reg &= ~(MU_CR_GIEn_MASK1 | MU_CR_RIEn_MASK1 | MU_CR_TIEn_MASK1
+			| MU_CR_GIRn_MASK1 | MU_CR_Fn_MASK1);
+	mmio_write_32(base + MU_ACR_OFFSET1, reg);
+}