1 files changed, 96 insertions, 0 deletions
diff --git a/board/freescale/imx8mq_val/ddr/wait_ddrphy_training_complete.c b/board/freescale/imx8mq_val/ddr/wait_ddrphy_training_complete.c
new file mode 100644
index 0000000000..e44072280e
--- /dev/null
+++ b/board/freescale/imx8mq_val/ddr/wait_ddrphy_training_complete.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2017 NXP
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+static inline void poll_pmu_message_ready(void)
+{
+	unsigned int reg;
+
+	do {
+		reg = reg32_read(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+4*0xd0004);
+	} while (reg & 0x1);
+}
+
+static inline void ack_pmu_message_recieve(void)
+{
+	unsigned int reg;
+
+	reg32_write(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+4*0xd0031,0x0);
+
+	do {
+		reg = reg32_read(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+4*0xd0004);
+	} while (!(reg & 0x1));
+
+	reg32_write(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+4*0xd0031,0x1);
+}
+
+static inline unsigned int get_mail(void)
+{
+	unsigned int reg;
+
+	poll_pmu_message_ready();
+
+	reg = reg32_read(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+4*0xd0032);
+
+	ack_pmu_message_recieve();
+
+	return reg;
+}
+
+static inline unsigned int get_stream_message(void)
+{
+	unsigned int reg, reg2;
+
+	poll_pmu_message_ready();
+
+	reg = reg32_read(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+4*0xd0032);
+
+	reg2 = reg32_read(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+4*0xd0034);
+
+	reg2 = (reg2 << 16) | reg;
+
+	ack_pmu_message_recieve();
+
+	return reg2;
+}
+
+static inline void decode_major_message(unsigned int mail)
+{
+	ddr_printf("[PMU Major message = 0x%08x]\n", mail);
+}
+
+static inline void decode_streaming_message(void)
+{
+	unsigned int string_index, arg __maybe_unused;
+	int i = 0;
+
+	string_index = get_stream_message();
+	ddr_printf("	PMU String index = 0x%08x\n", string_index);
+	while (i < (string_index & 0xffff)){
+		arg = get_stream_message();
+		ddr_printf("	arg[%d] = 0x%08x\n", i, arg);
+		i++;
+	}
+
+	ddr_printf("\n");
+}
+
+int wait_ddrphy_training_complete(void)
+{
+	unsigned int mail;
+	while (1) {
+		mail = get_mail();
+		decode_major_message(mail);
+		if (mail == 0x08) {
+			decode_streaming_message();
+		} else if (mail == 0x07) {
+			printf("Training PASS\n");
+			return 0;
+		} else if (mail == 0xff) {
+			printf("Training FAILED\n");
+			return -1;
+		}
+	}
+}