feat(imx8ulp): add i.MX8ULP basic support

Add the basic support for i.MX8ULP.

The i.MX 8ULP family of processors features NXP’s advanced
implementation of the dual Arm Cortex-A35 cores alongside
an Arm Cortex-M33. This combined architecture enables the
device to run a rich operating system (such as Linux) on
the Cortex-A35 core and an RTOS (such as FreeRTOS) on the
Cortex-M33 core. It also includes a Cadence Tensilica Fusion
DSP for low-power audio and a HiFi4 DSP for advanced audio
and machine learning applications.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: I12df622b95960bcdf7da52e4c66470a700690e36
diff --git a/plat/imx/imx8ulp/include/scmi.h b/plat/imx/imx8ulp/include/scmi.h
new file mode 100644
index 0000000..03e16f5
--- /dev/null
+++ b/plat/imx/imx8ulp/include/scmi.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2021-2024 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef IMX8_SCMI_H
+#define IMX8_SCMI_H
+
+#include <stdint.h>
+
+#define SCMI_SHMEM_CHANNEL_ERROR	BIT_32(1)
+#define SCMI_SHMEM_CHANNEL_FREE		BIT_32(0)
+
+#define SCMI_SHMEM_FLAG_INTR_ENABLED	BIT_32(0)
+
+enum scmi_std_protocol {
+	SCMI_PROTOCOL_BASE = 0x10,
+	SCMI_PROTOCOL_POWER_DOMAIN = 0x11,
+	SCMI_PROTOCOL_SYS_POWER = 0x12,
+	SCMI_PROTOCOL_PERF_DOMAIN = 0x13,
+	SCMI_PROTOCOL_CLK = 0x14,
+	SCMI_PROTOCOL_SENSOR = 0x15,
+	SCMI_PROTOCOL_RESET_DOMAIN = 0x16,
+};
+
+#define MSG_ID(m)	((m) & 0xff)
+#define MSG_TYPE(m)	(((m) >> 8) & 0x3)
+#define MSG_PRO_ID(m)	(((m) >> 10) & 0xff)
+#define MSG_TOKEN(m)	(((m) >> 18) & 0x3ff)
+
+enum {
+	SCMI_POWER_DOMAIN_PROTOCOL	= 0x11,
+	SCMI_SYS_PWR_DOMAIN_PROTOCOL	= 0x12,
+	SCMI_PER_DOMAIN_PROTOCOL	= 0x13,
+	SCMI_CLK_DOMAIN_PROTOCOL	= 0x14,
+	SCMI_SENSOR_PROTOCOL		= 0x15,
+};
+
+#define PROTOCOL_VERSION			0
+#define PROTOCOL_ATTRIBUTES			1
+#define PROTOCOL_MESSAGE_ATTRIBUTES		2
+#define BASE_DISCOVER_VENDOR			3
+#define BASE_DISCOVER_SUB_VENDOR		4
+#define BASE_DISCOVER_IMPLEMENTATION_VERSION	5
+#define BASE_DISCOVER_LIST_PROTOCOLS		6
+#define BASE_DISCOVER_AGENT			7
+#define BASE_NOTIFY_ERRORS			8
+#define BASE_SET_DEVICE_PERMISSIONS		9
+#define BASE_SET_PROTOCOL_PERMISSIONS		0xA
+#define BASE_RESET_AGENT_CONFIGURATION		0xB
+
+enum {
+	SCMI_RET_SUCCESS = 0,
+	SCMI_RET_NOT_SUPPORTED = -1,
+	SCMI_RET_INVALID_PARAMETERS = -2,
+	SCMI_RET_DENIED = -3,
+	SCMI_RET_NOT_FOUND = -4,
+	SCMI_RET_OUT_OF_RANGE = -5,
+	SCMI_RET_BUSY = -6,
+	SCMI_RET_COMMS_ERROR = -7,
+	SCMI_RET_GENERIC_ERROR = -8,
+	SCMI_RET_HARDWARE_ERROR = -9,
+	SCMI_RET_PROTOCOL_ERROR = -10,
+};
+
+#define POWER_DOMAIN_ATTRIBUTES			3
+#define POWER_DOMAIN_SUPPORT_NOTIFICATION	BIT(31)
+#define POWER_DOMAIN_SUPPORT_ASYNCHRONOUS	BIT(30)
+#define POWER_DOMAIN_SUPPORT_SYNCHRONOUS	BIT(29)
+
+#define POWER_STATE_SET			4
+#define POWER_STATE_GET			5
+#define POWER_STATE_NOTIFY		6
+#define	POWER_STATE_CHANGE_REQUESTED_NOTIFY	7
+
+int scmi_power_domain_handler(uint32_t msg_id, void *shmem);
+
+#define PERFORMANCE_DOMAIN_ATTRIBUTES		3
+#define PERFORMANCE_DESCRIBE_LEVELS		4
+#define PERFORMANCE_LIMITS_SET			5
+#define PERFORMANCE_LIMITS_GET			6
+#define PERFORMANCE_LEVEL_SET			7
+#define PERFORMANCE_LEVEL_GET			8
+#define PERFORMANCE_NOTIFY_LIMITS		9
+#define PERFORMANCE_NOTIFY_LEVEL		0xA
+#define PERFORMANCE_DESCRIBE_FAST_CHANNEL	0xB
+
+int scmi_perf_domain_handler(uint32_t msg_id, void *shmem);
+
+#define SENSOR_DESCRIPTION_GET			0x003
+#define SENSOR_CONFIG_SET			0x004
+#define SENSOR_TRIP_POINT_SET			0x005
+#define SENSOR_READING_GET			0x006
+
+int scmi_sensor_handler(uint32_t msg_id, void *shmem);
+
+#define SMC_SHMEM_BASE	0x2201f000
+
+#endif /* IMX8_SCMI_H */