Merge pull request #1514 from glneo/for-upstream-psci

K3 PSCI Support

plat/ti/k3/board/generic/include/board_def.h

@@ -32,4 +32,7 @@
 #define PLAT_MAX_OFF_STATE		U(2)
 #define PLAT_MAX_RET_STATE		U(1)
 
+#define PLAT_PROC_START_ID		32
+#define PLAT_PROC_DEVICE_START_ID	202
+
 #endif /* BOARD_DEF_H */

plat/ti/k3/common/drivers/sec_proxy/sec_proxy.c

+/*
+ * Texas Instruments K3 Secure Proxy Driver
+ *   Based on Linux and U-Boot implementation
+ *
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch_helpers.h>
+#include <debug.h>
+#include <errno.h>
+#include <mmio.h>
+#include <platform_def.h>
+#include <stdlib.h>
+#include <utils.h>
+#include <utils_def.h>
+
+#include "sec_proxy.h"
+
+/* SEC PROXY RT THREAD STATUS */
+#define RT_THREAD_STATUS			(0x0)
+#define RT_THREAD_STATUS_ERROR_SHIFT		(31)
+#define RT_THREAD_STATUS_ERROR_MASK		BIT(31)
+#define RT_THREAD_STATUS_CUR_CNT_SHIFT		(0)
+#define RT_THREAD_STATUS_CUR_CNT_MASK		GENMASK(7, 0)
+
+/* SEC PROXY SCFG THREAD CTRL */
+#define SCFG_THREAD_CTRL			(0x1000)
+#define SCFG_THREAD_CTRL_DIR_SHIFT		(31)
+#define SCFG_THREAD_CTRL_DIR_MASK		BIT(31)
+
+#define SEC_PROXY_THREAD(base, x)		((base) + (0x1000 * (x)))
+#define THREAD_IS_RX				(1)
+#define THREAD_IS_TX				(0)
+
+/**
+ * struct k3_sec_proxy_desc - Description of secure proxy integration
+ * @timeout_us:		Timeout for communication (in Microseconds)
+ * @max_msg_size:	Message size in bytes
+ * @data_start_offset:	Offset of the First data register of the thread
+ * @data_end_offset:	Offset of the Last data register of the thread
+ */
+struct k3_sec_proxy_desc {
+	uint32_t timeout_us;
+	uint16_t max_msg_size;
+	uint16_t data_start_offset;
+	uint16_t data_end_offset;
+};
+
+/**
+ * struct k3_sec_proxy_thread - Description of a secure proxy Thread
+ * @id:		Thread ID
+ * @data:	Thread Data path region for target
+ * @scfg:	Secure Config Region for Thread
+ * @rt:		RealTime Region for Thread
+ */
+struct k3_sec_proxy_thread {
+	uint32_t id;
+	uintptr_t data;
+	uintptr_t scfg;
+	uintptr_t rt;
+};
+
+/**
+ * struct k3_sec_proxy_mbox - Description of a Secure Proxy Instance
+ * @desc:	Description of the SoC integration
+ * @chans:	Array for valid thread instances
+ */
+struct k3_sec_proxy_mbox {
+	const struct k3_sec_proxy_desc desc;
+	struct k3_sec_proxy_thread threads[];
+};
+
+/*
+ * Thread ID #0: DMSC notify
+ * Thread ID #1: DMSC request response
+ * Thread ID #2: DMSC request high priority
+ * Thread ID #3: DMSC request low priority
+ * Thread ID #4: DMSC notify response
+ */
+#define SP_THREAD(_x) \
+	[_x] = { \
+		.id = _x, \
+		.data = SEC_PROXY_THREAD(SEC_PROXY_DATA_BASE, _x), \
+		.scfg = SEC_PROXY_THREAD(SEC_PROXY_SCFG_BASE, _x), \
+		.rt = SEC_PROXY_THREAD(SEC_PROXY_RT_BASE, _x), \
+	}
+
+static struct k3_sec_proxy_mbox spm = {
+	.desc = {
+		.timeout_us = SEC_PROXY_TIMEOUT_US,
+		.max_msg_size = SEC_PROXY_MAX_MESSAGE_SIZE,
+		.data_start_offset = 0x4,
+		.data_end_offset = 0x3C,
+	},
+	.threads = {
+		SP_THREAD(SP_NOTIFY),
+		SP_THREAD(SP_RESPONSE),
+		SP_THREAD(SP_HIGH_PRIORITY),
+		SP_THREAD(SP_LOW_PRIORITY),
+		SP_THREAD(SP_NOTIFY_RESP),
+	},
+};
+
+/**
+ * struct sec_msg_hdr - Message header for secure messages and responses
+ * @checksum:	CRC of message for integrity checking
+ */
+union sec_msg_hdr {
+	struct {
+		uint16_t checksum;
+		uint16_t reserved;
+	} __packed;
+	uint32_t data;
+};
+
+/**
+ * k3_sec_proxy_verify_thread() - Verify thread status before
+ *				  sending/receiving data
+ * @spt: Pointer to Secure Proxy thread description
+ * @dir: Direction of the thread
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+static inline int k3_sec_proxy_verify_thread(struct k3_sec_proxy_thread *spt,
+					     uint32_t dir)
+{
+	/* Check for any errors already available */
+	if (mmio_read_32(spt->rt + RT_THREAD_STATUS) &
+	    RT_THREAD_STATUS_ERROR_MASK) {
+		ERROR("Thread %d is corrupted, cannot send data\n", spt->id);
+		return -EINVAL;
+	}
+
+	/* Make sure thread is configured for right direction */
+	if ((mmio_read_32(spt->scfg + SCFG_THREAD_CTRL) & SCFG_THREAD_CTRL_DIR_MASK)
+	    != (dir << SCFG_THREAD_CTRL_DIR_SHIFT)) {
+		if (dir)
+			ERROR("Trying to receive data on tx Thread %d\n",
+			      spt->id);
+		else
+			ERROR("Trying to send data on rx Thread %d\n",
+			      spt->id);
+		return -EINVAL;
+	}
+
+	/* Check the message queue before sending/receiving data */
+	uint32_t tick_start = (uint32_t)read_cntpct_el0();
+	uint32_t ticks_per_us = SYS_COUNTER_FREQ_IN_TICKS / 1000000;
+	while (!(mmio_read_32(spt->rt + RT_THREAD_STATUS) & RT_THREAD_STATUS_CUR_CNT_MASK)) {
+		VERBOSE("Waiting for thread %d to clear\n", spt->id);
+		if (((uint32_t)read_cntpct_el0() - tick_start) >
+		    (spm.desc.timeout_us * ticks_per_us)) {
+			ERROR("Timeout waiting for thread %d to clear\n", spt->id);
+			return -ETIMEDOUT;
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * k3_sec_proxy_send() - Send data over a Secure Proxy thread
+ * @id: Channel Identifier
+ * @msg: Pointer to k3_sec_proxy_msg
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int k3_sec_proxy_send(enum k3_sec_proxy_chan_id id, const struct k3_sec_proxy_msg *msg)
+{
+	struct k3_sec_proxy_thread *spt = &spm.threads[id];
+	union sec_msg_hdr secure_header;
+	int num_words, trail_bytes, i, ret;
+	uintptr_t data_reg;
+
+	ret = k3_sec_proxy_verify_thread(spt, THREAD_IS_TX);
+	if (ret) {
+		ERROR("Thread %d verification failed (%d)\n", spt->id, ret);
+		return ret;
+	}
+
+	/* Check the message size */
+	if (msg->len + sizeof(secure_header) > spm.desc.max_msg_size) {
+		ERROR("Thread %d message length %lu > max msg size\n",
+		      spt->id, msg->len);
+		return -EINVAL;
+	}
+
+	/* TODO: Calculate checksum */
+	secure_header.checksum = 0;
+
+	/* Send the secure header */
+	data_reg = spm.desc.data_start_offset;
+	mmio_write_32(spt->data + data_reg, secure_header.data);
+	data_reg += sizeof(uint32_t);
+
+	/* Send whole words */
+	num_words = msg->len / sizeof(uint32_t);
+	for (i = 0; i < num_words; i++) {
+		mmio_write_32(spt->data + data_reg, ((uint32_t *)msg->buf)[i]);
+		data_reg += sizeof(uint32_t);
+	}
+
+	/* Send remaining bytes */
+	trail_bytes = msg->len % sizeof(uint32_t);
+	if (trail_bytes) {
+		uint32_t data_trail = 0;
+
+		i = msg->len - trail_bytes;
+		while (trail_bytes--) {
+			data_trail <<= 8;
+			data_trail |= msg->buf[i++];
+		}
+
+		mmio_write_32(spt->data + data_reg, data_trail);
+		data_reg += sizeof(uint32_t);
+	}
+	/*
+	 * 'data_reg' indicates next register to write. If we did not already
+	 * write on tx complete reg(last reg), we must do so for transmit
+	 */
+	if (data_reg <= spm.desc.data_end_offset)
+		mmio_write_32(spt->data + spm.desc.data_end_offset, 0);
+
+	VERBOSE("Message successfully sent on thread %ud\n", id);
+
+	return 0;
+}
+
+/**
+ * k3_sec_proxy_recv() - Receive data from a Secure Proxy thread
+ * @id: Channel Identifier
+ * @msg: Pointer to k3_sec_proxy_msg
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int k3_sec_proxy_recv(uint32_t id, struct k3_sec_proxy_msg *msg)
+{
+	struct k3_sec_proxy_thread *spt = &spm.threads[id];
+	union sec_msg_hdr secure_header;
+	uintptr_t data_reg;
+	int num_words, trail_bytes, i, ret;
+
+	ret = k3_sec_proxy_verify_thread(spt, THREAD_IS_RX);
+	if (ret) {
+		ERROR("Thread %d verification failed (%d)\n", spt->id, ret);
+		return ret;
+	}
+
+	/* Read secure header */
+	data_reg = spm.desc.data_start_offset;
+	secure_header.data = mmio_read_32(spt->data + data_reg);
+	data_reg += sizeof(uint32_t);
+
+	/* Read whole words */
+	num_words = msg->len / sizeof(uint32_t);
+	for (i = 0; i < num_words; i++) {
+		((uint32_t *)msg->buf)[i] = mmio_read_32(spt->data + data_reg);
+		data_reg += sizeof(uint32_t);
+	}
+
+	/* Read remaining bytes */
+	trail_bytes = msg->len % sizeof(uint32_t);
+	if (trail_bytes) {
+		uint32_t data_trail = mmio_read_32(spt->data + data_reg);
+		data_reg += sizeof(uint32_t);
+
+		i = msg->len - trail_bytes;
+		while (trail_bytes--) {
+			msg->buf[i] = data_trail & 0xff;
+			data_trail >>= 8;
+		}
+	}
+
+	/*
+	 * 'data_reg' indicates next register to read. If we did not already
+	 * read on rx complete reg(last reg), we must do so for receive
+	 */
+	if (data_reg <= spm.desc.data_end_offset)
+		mmio_read_32(spt->data + spm.desc.data_end_offset);
+
+	/* TODO: Verify checksum */
+	(void)secure_header.checksum;
+
+	VERBOSE("Message successfully received from thread %ud\n", id);
+
+	return 0;
+}

plat/ti/k3/common/drivers/sec_proxy/sec_proxy.h

+/*
+ * Texas Instruments K3 Secure Proxy Driver
+ *   Based on Linux and U-Boot implementation
+ *
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef K3_SEC_PROXY_H
+#define K3_SEC_PROXY_H
+
+#include <stdint.h>
+
+/**
+ * enum k3_sec_proxy_chan_id - Secure Proxy thread IDs
+ *
+ * These the available IDs used in k3_sec_proxy_{send,recv}()
+ */
+enum k3_sec_proxy_chan_id {
+	SP_NOTIFY = 0,
+	SP_RESPONSE,
+	SP_HIGH_PRIORITY,
+	SP_LOW_PRIORITY,
+	SP_NOTIFY_RESP,
+};
+
+/**
+ * struct k3_sec_proxy_msg - Secure proxy message structure
+ * @len: Length of data in the Buffer
+ * @buf: Buffer pointer
+ *
+ * This is the structure for data used in k3_sec_proxy_{send,recv}()
+ */
+struct k3_sec_proxy_msg {
+	size_t len;
+	uint8_t *buf;
+};
+
+/**
+ * k3_sec_proxy_send() - Send data over a Secure Proxy thread
+ * @id: Channel Identifier
+ * @msg: Pointer to k3_sec_proxy_msg
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int k3_sec_proxy_send(enum k3_sec_proxy_chan_id id, const struct k3_sec_proxy_msg *msg);
+
+/**
+ * k3_sec_proxy_recv() - Receive data from a Secure Proxy thread
+ * @id: Channel Identifier
+ * @msg: Pointer to k3_sec_proxy_msg
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int k3_sec_proxy_recv(enum k3_sec_proxy_chan_id id, struct k3_sec_proxy_msg *msg);
+
+#endif /* K3_SEC_PROXY_H */

plat/ti/k3/common/drivers/ti_sci/ti_sci.c

+/*
+ * Texas Instruments System Control Interface Driver
+ *   Based on Linux and U-Boot implementation
+ *
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <debug.h>
+#include <errno.h>
+#include <platform_def.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+
+#include <sec_proxy.h>
+
+#include "ti_sci_protocol.h"
+#include "ti_sci.h"
+
+/**
+ * struct ti_sci_desc - Description of SoC integration
+ * @host_id:		Host identifier representing the compute entity
+ * @max_msg_size:	Maximum size of data per message that can be handled
+ */
+struct ti_sci_desc {
+	uint8_t host_id;
+	int max_msg_size;
+};
+
+/**
+ * struct ti_sci_info - Structure representing a TI SCI instance
+ * @desc:	SoC description for this instance
+ * @seq:	Seq id used for verification for tx and rx message
+ */
+struct ti_sci_info {
+	const struct ti_sci_desc desc;
+	uint8_t seq;
+};
+
+static struct ti_sci_info info = {
+	.desc = {
+		.host_id = TI_SCI_HOST_ID,
+		.max_msg_size = TI_SCI_MAX_MESSAGE_SIZE,
+	},
+	.seq = 0x0a,
+};
+
+/**
+ * struct ti_sci_xfer - Structure representing a message flow
+ * @tx_message:	Transmit message
+ * @rx_message:	Receive message
+ */
+struct ti_sci_xfer {
+	struct k3_sec_proxy_msg tx_message;
+	struct k3_sec_proxy_msg rx_message;
+};
+
+/**
+ * ti_sci_setup_one_xfer() - Setup one message type
+ *
+ * @msg_type:	Message type
+ * @msg_flags:	Flag to set for the message
+ * @tx_buf:	Buffer to be sent to mailbox channel
+ * @tx_message_size: transmit message size
+ * @rx_buf:	Buffer to be received from mailbox channel
+ * @rx_message_size: receive message size
+ *
+ * Helper function which is used by various command functions that are
+ * exposed to clients of this driver for allocating a message traffic event.
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+static int ti_sci_setup_one_xfer(uint16_t msg_type, uint32_t msg_flags,
+				 void *tx_buf,
+				 size_t tx_message_size,
+				 void *rx_buf,
+				 size_t rx_message_size,
+				 struct ti_sci_xfer *xfer)
+{
+	struct ti_sci_msg_hdr *hdr;
+
+	/* Ensure we have sane transfer sizes */
+	if (rx_message_size > info.desc.max_msg_size ||
+	    tx_message_size > info.desc.max_msg_size ||
+	    rx_message_size < sizeof(*hdr) ||
+	    tx_message_size < sizeof(*hdr))
+		return -ERANGE;
+
+	info.seq++;
+
+	hdr = (struct ti_sci_msg_hdr *)tx_buf;
+	hdr->seq = info.seq;
+	hdr->type = msg_type;
+	hdr->host = info.desc.host_id;
+	hdr->flags = msg_flags;
+
+	xfer->tx_message.buf = tx_buf;
+	xfer->tx_message.len = tx_message_size;
+
+	xfer->rx_message.buf = rx_buf;
+	xfer->rx_message.len = rx_message_size;
+
+	return 0;
+}
+
+/**
+ * ti_sci_get_response() - Receive response from mailbox channel
+ *
+ * @xfer:	Transfer to initiate and wait for response
+ * @chan:	Channel to receive the response
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+static inline int ti_sci_get_response(struct ti_sci_xfer *xfer,
+				      enum k3_sec_proxy_chan_id chan)
+{
+	struct k3_sec_proxy_msg *msg = &xfer->rx_message;
+	struct ti_sci_msg_hdr *hdr;
+	int ret;
+
+	/* Receive the response */
+	ret = k3_sec_proxy_recv(chan, msg);
+	if (ret) {
+		ERROR("Message receive failed (%d)\n", ret);
+		return ret;
+	}
+
+	/* msg is updated by Secure Proxy driver */
+	hdr = (struct ti_sci_msg_hdr *)msg->buf;
+
+	/* Sanity check for message response */
+	if (hdr->seq != info.seq) {
+		ERROR("Message for %d is not expected\n", hdr->seq);
+		return -EINVAL;
+	}
+
+	if (msg->len > info.desc.max_msg_size) {
+		ERROR("Unable to handle %lu xfer (max %d)\n",
+		      msg->len, info.desc.max_msg_size);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/**
+ * ti_sci_do_xfer() - Do one transfer
+ *
+ * @xfer:	Transfer to initiate and wait for response
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+static inline int ti_sci_do_xfer(struct ti_sci_xfer *xfer)
+{
+	struct k3_sec_proxy_msg *msg = &xfer->tx_message;
+	int ret;
+
+	/* Send the message */
+	ret = k3_sec_proxy_send(SP_HIGH_PRIORITY, msg);
+	if (ret) {
+		ERROR("Message sending failed (%d)\n", ret);
+		return ret;
+	}
+
+	ret = ti_sci_get_response(xfer, SP_RESPONSE);
+	if (ret) {
+		ERROR("Failed to get response (%d)\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+/**
+ * ti_sci_get_revision() - Get the revision of the SCI entity
+ *
+ * Updates the SCI information in the internal data structure.
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_get_revision(struct ti_sci_msg_resp_version *rev_info)
+{
+	struct ti_sci_msg_hdr hdr;
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_VERSION, 0x0,
+				    &hdr, sizeof(hdr),
+				    rev_info, sizeof(*rev_info),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+/**
+ * ti_sci_is_response_ack() - Generic ACK/NACK message check
+ *
+ * @r:	pointer to response buffer
+ *
+ * Return: true if the response was an ACK, else returns false
+ */
+static inline bool ti_sci_is_response_ack(void *r)
+{
+	struct ti_sci_msg_hdr *hdr = r;
+
+	return hdr->flags & TI_SCI_FLAG_RESP_GENERIC_ACK ? true : false;
+}
+
+/**
+ * ti_sci_device_set_state() - Set device state
+ *
+ * @id:		Device identifier
+ * @flags:	flags to setup for the device
+ * @state:	State to move the device to
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_device_set_state(uint32_t id, uint32_t flags, uint8_t state)
+{
+	struct ti_sci_msg_req_set_device_state req;
+	struct ti_sci_msg_hdr resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_DEVICE_STATE,
+				    flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.id = id;
+	req.state = state;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
+ * ti_sci_device_get_state() - Get device state
+ *
+ * @id:		Device Identifier
+ * @clcnt:	Pointer to Context Loss Count
+ * @resets:	pointer to resets
+ * @p_state:	pointer to p_state
+ * @c_state:	pointer to c_state
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_device_get_state(uint32_t id,  uint32_t *clcnt,  uint32_t *resets,
+			    uint8_t *p_state,  uint8_t *c_state)
+{
+	struct ti_sci_msg_req_get_device_state req;
+	struct ti_sci_msg_resp_get_device_state resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	if (!clcnt && !resets && !p_state && !c_state)
+		return -EINVAL;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_DEVICE_STATE, 0,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.id = id;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	if (clcnt)
+		*clcnt = resp.context_loss_count;
+	if (resets)
+		*resets = resp.resets;
+	if (p_state)
+		*p_state = resp.programmed_state;
+	if (c_state)
+		*c_state = resp.current_state;
+
+	return 0;
+}
+
+/**
+ * ti_sci_device_get() - Request for device managed by TISCI
+ *
+ * @id:		Device Identifier
+ *
+ * Request for the device - NOTE: the client MUST maintain integrity of
+ * usage count by balancing get_device with put_device. No refcounting is
+ * managed by driver for that purpose.
+ *
+ * NOTE: The request is for exclusive access for the processor.
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_device_get(uint32_t id)
+{
+	return ti_sci_device_set_state(id,
+				       MSG_FLAG_DEVICE_EXCLUSIVE,
+				       MSG_DEVICE_SW_STATE_ON);
+}
+
+/**
+ * ti_sci_device_idle() - Idle a device managed by TISCI
+ *
+ * @id:		Device Identifier
+ *
+ * Request for the device - NOTE: the client MUST maintain integrity of
+ * usage count by balancing get_device with put_device. No refcounting is
+ * managed by driver for that purpose.
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_device_idle(uint32_t id)
+{
+	return ti_sci_device_set_state(id,
+				       MSG_FLAG_DEVICE_EXCLUSIVE,
+				       MSG_DEVICE_SW_STATE_RETENTION);
+}
+
+/**
+ * ti_sci_device_put() - Release a device managed by TISCI
+ *
+ * @id:		Device Identifier
+ *
+ * Request for the device - NOTE: the client MUST maintain integrity of
+ * usage count by balancing get_device with put_device. No refcounting is
+ * managed by driver for that purpose.
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_device_put(uint32_t id)
+{
+	return ti_sci_device_set_state(id, 0, MSG_DEVICE_SW_STATE_AUTO_OFF);
+}
+
+/**
+ * ti_sci_device_is_valid() - Is the device valid
+ *
+ * @id:		Device Identifier
+ *
+ * Return: 0 if all goes well and the device ID is valid, else return
+ *         appropriate error
+ */
+int ti_sci_device_is_valid(uint32_t id)
+{
+	uint8_t unused;
+
+	/* check the device state which will also tell us if the ID is valid */
+	return ti_sci_device_get_state(id, NULL, NULL, NULL, &unused);
+}
+
+/**
+ * ti_sci_device_get_clcnt() - Get context loss counter
+ *
+ * @id:		Device Identifier
+ * @count:	Pointer to Context Loss counter to populate
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_device_get_clcnt(uint32_t id, uint32_t *count)
+{
+	return ti_sci_device_get_state(id, count, NULL, NULL, NULL);
+}
+
+/**
+ * ti_sci_device_is_idle() - Check if the device is requested to be idle
+ *
+ * @id:		Device Identifier
+ * @r_state:	true if requested to be idle
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_device_is_idle(uint32_t id, bool *r_state)
+{
+	int ret;
+	uint8_t state;
+
+	if (!r_state)
+		return -EINVAL;
+
+	ret = ti_sci_device_get_state(id, NULL, NULL, &state, NULL);
+	if (ret)
+		return ret;
+
+	*r_state = (state == MSG_DEVICE_SW_STATE_RETENTION);
+
+	return 0;
+}
+
+/**
+ * ti_sci_device_is_stop() - Check if the device is requested to be stopped
+ *
+ * @id:		Device Identifier
+ * @r_state:	true if requested to be stopped
+ * @curr_state:	true if currently stopped
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_device_is_stop(uint32_t id, bool *r_state,  bool *curr_state)
+{
+	int ret;
+	uint8_t p_state, c_state;
+
+	if (!r_state && !curr_state)
+		return -EINVAL;
+
+	ret = ti_sci_device_get_state(id, NULL, NULL, &p_state, &c_state);
+	if (ret)
+		return ret;
+
+	if (r_state)
+		*r_state = (p_state == MSG_DEVICE_SW_STATE_AUTO_OFF);
+	if (curr_state)
+		*curr_state = (c_state == MSG_DEVICE_HW_STATE_OFF);
+
+	return 0;
+}
+
+/**
+ * ti_sci_device_is_on() - Check if the device is requested to be ON
+ *
+ * @id:		Device Identifier
+ * @r_state:	true if requested to be ON
+ * @curr_state:	true if currently ON and active
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_device_is_on(uint32_t id, bool *r_state,  bool *curr_state)
+{
+	int ret;
+	uint8_t p_state, c_state;
+
+	if (!r_state && !curr_state)
+		return -EINVAL;
+
+	ret =
+	    ti_sci_device_get_state(id, NULL, NULL, &p_state, &c_state);
+	if (ret)
+		return ret;
+
+	if (r_state)
+		*r_state = (p_state == MSG_DEVICE_SW_STATE_ON);
+	if (curr_state)
+		*curr_state = (c_state == MSG_DEVICE_HW_STATE_ON);
+
+	return 0;
+}
+
+/**
+ * ti_sci_device_is_trans() - Check if the device is currently transitioning
+ *
+ * @id:		Device Identifier
+ * @curr_state:	true if currently transitioning
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_device_is_trans(uint32_t id, bool *curr_state)
+{
+	int ret;
+	uint8_t state;
+
+	if (!curr_state)
+		return -EINVAL;
+
+	ret = ti_sci_device_get_state(id, NULL, NULL, NULL, &state);
+	if (ret)
+		return ret;
+
+	*curr_state = (state == MSG_DEVICE_HW_STATE_TRANS);
+
+	return 0;
+}
+
+/**
+ * ti_sci_device_set_resets() - Set resets for device managed by TISCI
+ *
+ * @id:			Device Identifier
+ * @reset_state:	Device specific reset bit field
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_device_set_resets(uint32_t id, uint32_t reset_state)
+{
+	struct ti_sci_msg_req_set_device_resets req;
+	struct ti_sci_msg_hdr resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_DEVICE_RESETS,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.id = id;
+	req.resets = reset_state;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
+ * ti_sci_device_get_resets() - Get reset state for device managed by TISCI
+ *
+ * @id:			Device Identifier
+ * @reset_state:	Pointer to reset state to populate
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_device_get_resets(uint32_t id, uint32_t *reset_state)
+{
+	return ti_sci_device_get_state(id, NULL, reset_state, NULL, NULL);
+}
+
+/**
+ * ti_sci_clock_set_state() - Set clock state helper
+ *
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request,
+ *		Each device has its own set of clock inputs, This indexes
+ *		which clock input to modify
+ * @flags:	Header flags as needed
+ * @state:	State to request for the clock
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_set_state(uint32_t dev_id, uint8_t clk_id,
+			   uint32_t flags, uint8_t state)
+{
+	struct ti_sci_msg_req_set_clock_state req;
+	struct ti_sci_msg_hdr resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_CLOCK_STATE,
+				    flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.dev_id = dev_id;
+	req.clk_id = clk_id;
+	req.request_state = state;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
+ * ti_sci_clock_get_state() - Get clock state helper
+ *
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @programmed_state:	State requested for clock to move to
+ * @current_state:	State that the clock is currently in
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_get_state(uint32_t dev_id, uint8_t clk_id,
+			   uint8_t *programmed_state,
+			   uint8_t *current_state)
+{
+	struct ti_sci_msg_req_get_clock_state req;
+	struct ti_sci_msg_resp_get_clock_state resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	if (!programmed_state && !current_state)
+		return -EINVAL;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_CLOCK_STATE,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.dev_id = dev_id;
+	req.clk_id = clk_id;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	if (programmed_state)
+		*programmed_state = resp.programmed_state;
+	if (current_state)
+		*current_state = resp.current_state;
+
+	return 0;
+}
+
+/**
+ * ti_sci_clock_get() - Get control of a clock from TI SCI
+
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @needs_ssc: 'true' iff Spread Spectrum clock is desired
+ * @can_change_freq: 'true' iff frequency change is desired
+ * @enable_input_term: 'true' iff input termination is desired
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_get(uint32_t dev_id, uint8_t clk_id,
+		     bool needs_ssc, bool can_change_freq,
+		     bool enable_input_term)
+{
+	uint32_t flags = 0;
+
+	flags |= needs_ssc ? MSG_FLAG_CLOCK_ALLOW_SSC : 0;
+	flags |= can_change_freq ? MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE : 0;
+	flags |= enable_input_term ? MSG_FLAG_CLOCK_INPUT_TERM : 0;
+
+	return ti_sci_clock_set_state(dev_id, clk_id, flags,
+				      MSG_CLOCK_SW_STATE_REQ);
+}
+
+/**
+ * ti_sci_clock_idle() - Idle a clock which is in our control
+
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ *
+ * NOTE: This clock must have been requested by get_clock previously.
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_idle(uint32_t dev_id, uint8_t clk_id)
+{
+	return ti_sci_clock_set_state(dev_id, clk_id, 0,
+				      MSG_CLOCK_SW_STATE_UNREQ);
+}
+
+/**
+ * ti_sci_clock_put() - Release a clock from our control
+ *
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ *
+ * NOTE: This clock must have been requested by get_clock previously.
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_put(uint32_t dev_id, uint8_t clk_id)
+{
+	return ti_sci_clock_set_state(dev_id, clk_id, 0,
+				      MSG_CLOCK_SW_STATE_AUTO);
+}
+
+/**
+ * ti_sci_clock_is_auto() - Is the clock being auto managed
+ *
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @req_state: state indicating if the clock is auto managed
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_is_auto(uint32_t dev_id, uint8_t clk_id, bool *req_state)
+{
+	uint8_t state = 0;
+	int ret;
+
+	if (!req_state)
+		return -EINVAL;
+
+	ret = ti_sci_clock_get_state(dev_id, clk_id, &state, NULL);
+	if (ret)
+		return ret;
+
+	*req_state = (state == MSG_CLOCK_SW_STATE_AUTO);
+
+	return 0;
+}
+
+/**
+ * ti_sci_clock_is_on() - Is the clock ON
+ *
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @req_state: state indicating if the clock is managed by us and enabled
+ * @curr_state: state indicating if the clock is ready for operation
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_is_on(uint32_t dev_id, uint8_t clk_id,
+		       bool *req_state, bool *curr_state)
+{
+	uint8_t c_state = 0, r_state = 0;
+	int ret;
+
+	if (!req_state && !curr_state)
+		return -EINVAL;
+
+	ret = ti_sci_clock_get_state(dev_id, clk_id, &r_state, &c_state);
+	if (ret)
+		return ret;
+
+	if (req_state)
+		*req_state = (r_state == MSG_CLOCK_SW_STATE_REQ);
+	if (curr_state)
+		*curr_state = (c_state == MSG_CLOCK_HW_STATE_READY);
+
+	return 0;
+}
+
+/**
+ * ti_sci_clock_is_off() - Is the clock OFF
+ *
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @req_state: state indicating if the clock is managed by us and disabled
+ * @curr_state: state indicating if the clock is NOT ready for operation
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_is_off(uint32_t dev_id, uint8_t clk_id,
+			bool *req_state, bool *curr_state)
+{
+	uint8_t c_state = 0, r_state = 0;
+	int ret;
+
+	if (!req_state && !curr_state)
+		return -EINVAL;
+
+	ret = ti_sci_clock_get_state(dev_id, clk_id, &r_state, &c_state);
+	if (ret)
+		return ret;
+
+	if (req_state)
+		*req_state = (r_state == MSG_CLOCK_SW_STATE_UNREQ);
+	if (curr_state)
+		*curr_state = (c_state == MSG_CLOCK_HW_STATE_NOT_READY);
+
+	return 0;
+}
+
+/**
+ * ti_sci_clock_set_parent() - Set the clock source of a specific device clock
+ *
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @parent_id:	Parent clock identifier to set
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_set_parent(uint32_t dev_id, uint8_t clk_id, uint8_t parent_id)
+{
+	struct ti_sci_msg_req_set_clock_parent req;
+	struct ti_sci_msg_hdr resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_CLOCK_PARENT,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.dev_id = dev_id;
+	req.clk_id = clk_id;
+	req.parent_id = parent_id;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
+ * ti_sci_clock_get_parent() - Get current parent clock source
+ *
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @parent_id:	Current clock parent
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_get_parent(uint32_t dev_id, uint8_t clk_id, uint8_t *parent_id)
+{
+	struct ti_sci_msg_req_get_clock_parent req;
+	struct ti_sci_msg_resp_get_clock_parent resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_CLOCK_PARENT,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.dev_id = dev_id;
+	req.clk_id = clk_id;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	*parent_id = resp.parent_id;
+
+	return 0;
+}
+
+/**
+ * ti_sci_clock_get_num_parents() - Get num parents of the current clk source
+ *
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @num_parents: Returns he number of parents to the current clock.
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_get_num_parents(uint32_t dev_id, uint8_t clk_id,
+				 uint8_t *num_parents)
+{
+	struct ti_sci_msg_req_get_clock_num_parents req;
+	struct ti_sci_msg_resp_get_clock_num_parents resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_NUM_CLOCK_PARENTS,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.dev_id = dev_id;
+	req.clk_id = clk_id;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	*num_parents = resp.num_parents;
+
+	return 0;
+}
+
+/**
+ * ti_sci_clock_get_match_freq() - Find a good match for frequency
+ *
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @min_freq:	The minimum allowable frequency in Hz. This is the minimum
+ *		allowable programmed frequency and does not account for clock
+ *		tolerances and jitter.
+ * @target_freq: The target clock frequency in Hz. A frequency will be
+ *		processed as close to this target frequency as possible.
+ * @max_freq:	The maximum allowable frequency in Hz. This is the maximum
+ *		allowable programmed frequency and does not account for clock
+ *		tolerances and jitter.
+ * @match_freq:	Frequency match in Hz response.
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_get_match_freq(uint32_t dev_id, uint8_t clk_id,
+				uint64_t min_freq, uint64_t target_freq,
+				uint64_t max_freq, uint64_t *match_freq)
+{
+	struct ti_sci_msg_req_query_clock_freq req;
+	struct ti_sci_msg_resp_query_clock_freq resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_QUERY_CLOCK_FREQ,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.dev_id = dev_id;
+	req.clk_id = clk_id;
+	req.min_freq_hz = min_freq;
+	req.target_freq_hz = target_freq;
+	req.max_freq_hz = max_freq;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	*match_freq = resp.freq_hz;
+
+	return 0;
+}
+
+/**
+ * ti_sci_clock_set_freq() - Set a frequency for clock
+ *
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @min_freq:	The minimum allowable frequency in Hz. This is the minimum
+ *		allowable programmed frequency and does not account for clock
+ *		tolerances and jitter.
+ * @target_freq: The target clock frequency in Hz. A frequency will be
+ *		processed as close to this target frequency as possible.
+ * @max_freq:	The maximum allowable frequency in Hz. This is the maximum
+ *		allowable programmed frequency and does not account for clock
+ *		tolerances and jitter.
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_set_freq(uint32_t dev_id, uint8_t clk_id, uint64_t min_freq,
+			  uint64_t target_freq, uint64_t max_freq)
+{
+	struct ti_sci_msg_req_set_clock_freq req;
+	struct ti_sci_msg_hdr resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_CLOCK_FREQ,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+	req.dev_id = dev_id;
+	req.clk_id = clk_id;
+	req.min_freq_hz = min_freq;
+	req.target_freq_hz = target_freq;
+	req.max_freq_hz = max_freq;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
+ * ti_sci_clock_get_freq() - Get current frequency
+ *
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @freq:	Currently frequency in Hz
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_clock_get_freq(uint32_t dev_id, uint8_t clk_id, uint64_t *freq)
+{
+	struct ti_sci_msg_req_get_clock_freq req;
+	struct ti_sci_msg_resp_get_clock_freq resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_CLOCK_FREQ,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.dev_id = dev_id;
+	req.clk_id = clk_id;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	*freq = resp.freq_hz;
+
+	return 0;
+}
+
+/**
+ * ti_sci_core_reboot() - Command to request system reset
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_core_reboot(void)
+{
+	struct ti_sci_msg_req_reboot req;
+	struct ti_sci_msg_hdr resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SYS_RESET,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
+ * ti_sci_proc_request() - Request a physical processor control
+ *
+ * @proc_id:	Processor ID this request is for
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_proc_request(uint8_t proc_id)
+{
+	struct ti_sci_msg_req_proc_request req;
+	struct ti_sci_msg_hdr resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_REQUEST,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.processor_id = proc_id;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
+ * ti_sci_proc_release() - Release a physical processor control
+ *
+ * @proc_id:	Processor ID this request is for
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_proc_release(uint8_t proc_id)
+{
+	struct ti_sci_msg_req_proc_release req;
+	struct ti_sci_msg_hdr resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_RELEASE,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.processor_id = proc_id;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
+ * ti_sci_proc_handover() - Handover a physical processor control to a host in
+ *                          the processor's access control list.
+ *
+ * @proc_id:	Processor ID this request is for
+ * @host_id:	Host ID to get the control of the processor
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_proc_handover(uint8_t proc_id, uint8_t host_id)
+{
+	struct ti_sci_msg_req_proc_handover req;
+	struct ti_sci_msg_hdr resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_HANDOVER,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.processor_id = proc_id;
+	req.host_id = host_id;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
+ * ti_sci_proc_set_boot_cfg() - Set the processor boot configuration flags
+ *
+ * @proc_id:		Processor ID this request is for
+ * @config_flags_set:	Configuration flags to be set
+ * @config_flags_clear:	Configuration flags to be cleared
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_proc_set_boot_cfg(uint8_t proc_id, uint64_t bootvector,
+			     uint32_t config_flags_set,
+			     uint32_t config_flags_clear)
+{
+	struct ti_sci_msg_req_set_proc_boot_config req;
+	struct ti_sci_msg_hdr resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TISCI_MSG_SET_PROC_BOOT_CONFIG,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.processor_id = proc_id;
+	req.bootvector_low = bootvector & TISCI_ADDR_LOW_MASK;
+	req.bootvector_high = (bootvector & TISCI_ADDR_HIGH_MASK) >>
+				TISCI_ADDR_HIGH_SHIFT;
+	req.config_flags_set = config_flags_set;
+	req.config_flags_clear = config_flags_clear;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
+ * ti_sci_proc_set_boot_ctrl() - Set the processor boot control flags
+ *
+ * @proc_id:			Processor ID this request is for
+ * @control_flags_set:		Control flags to be set
+ * @control_flags_clear:	Control flags to be cleared
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_proc_set_boot_ctrl(uint8_t proc_id, uint32_t control_flags_set,
+			      uint32_t control_flags_clear)
+{
+	struct ti_sci_msg_req_set_proc_boot_ctrl req;
+	struct ti_sci_msg_hdr resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TISCI_MSG_SET_PROC_BOOT_CTRL,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.processor_id = proc_id;
+	req.control_flags_set = control_flags_set;
+	req.control_flags_clear = control_flags_clear;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
+ * ti_sci_proc_auth_boot_image() - Authenticate and load image and then set the
+ *                                 processor configuration flags
+ *
+ * @proc_id:	Processor ID this request is for
+ * @cert_addr:	Memory address at which payload image certificate is located
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_proc_auth_boot_image(uint8_t proc_id, uint64_t cert_addr)
+{
+	struct ti_sci_msg_req_proc_auth_boot_image req;
+	struct ti_sci_msg_hdr resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_AUTH_BOOT_IMIAGE,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.processor_id = proc_id;
+	req.cert_addr_low = cert_addr & TISCI_ADDR_LOW_MASK;
+	req.cert_addr_high = (cert_addr & TISCI_ADDR_HIGH_MASK) >>
+				TISCI_ADDR_HIGH_SHIFT;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
+ * ti_sci_proc_get_boot_status() - Get the processor boot status
+ *
+ * @proc_id:	Processor ID this request is for
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_proc_get_boot_status(uint8_t proc_id, uint64_t *bv,
+				uint32_t *cfg_flags,
+				uint32_t *ctrl_flags,
+				uint32_t *sts_flags)
+{
+	struct ti_sci_msg_req_get_proc_boot_status req;
+	struct ti_sci_msg_resp_get_proc_boot_status resp;
+
+	struct ti_sci_xfer xfer;
+	int ret;
+
+	ret = ti_sci_setup_one_xfer(TISCI_MSG_GET_PROC_BOOT_STATUS,
+				    TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				    &req, sizeof(req),
+				    &resp, sizeof(resp),
+				    &xfer);
+	if (ret) {
+		ERROR("Message alloc failed (%d)\n", ret);
+		return ret;
+	}
+
+	req.processor_id = proc_id;
+
+	ret = ti_sci_do_xfer(&xfer);
+	if (ret) {
+		ERROR("Transfer send failed (%d)\n", ret);
+		return ret;
+	}
+
+	if (!ti_sci_is_response_ack(&resp))
+		return -ENODEV;
+
+	*bv = (resp.bootvector_low & TISCI_ADDR_LOW_MASK) |
+	      (((uint64_t)resp.bootvector_high << TISCI_ADDR_HIGH_SHIFT) &
+	       TISCI_ADDR_HIGH_MASK);
+	*cfg_flags = resp.config_flags;
+	*ctrl_flags = resp.control_flags;
+	*sts_flags = resp.status_flags;
+
+	return 0;
+}
+
+/**
+ * ti_sci_init() - Basic initialization
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_init(void)
+{
+	struct ti_sci_msg_resp_version rev_info;
+	int ret;
+
+	ret = ti_sci_get_revision(&rev_info);
+	if (ret) {
+		ERROR("Unable to communicate with control firmware (%d)\n", ret);
+		return ret;
+	}
+
+	INFO("SYSFW ABI: %d.%d (firmware rev 0x%04x '%s')\n",
+	     rev_info.abi_major, rev_info.abi_minor,
+	     rev_info.firmware_revision,
+	     rev_info.firmware_description);
+
+	return 0;
+}

plat/ti/k3/common/drivers/ti_sci/ti_sci.h

+/*
+ * Texas Instruments System Control Interface API
+ *   Based on Linux and U-Boot implementation
+ *
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __TI_SCI_H
+#define __TI_SCI_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+/**
+ * Device control operations
+ *
+ * - ti_sci_device_set_state - Set device state helper
+ *              @flags: flags to setup for the device
+ *              @state: State to move the device to
+ * - ti_sci_device_get_state - Get device state helper
+ *              @clcnt: Pointer to Context Loss Count
+ *              @resets: pointer to resets
+ *              @p_state: pointer to p_state
+ *              @c_state: pointer to c_state
+ * - ti_sci_device_get - command to request for device managed by TISCI
+ * - ti_sci_device_idle - Command to idle a device managed by TISCI
+ * - ti_sci_device_put - command to release a device managed by TISCI
+ * - ti_sci_device_is_valid - Is the device valid
+ * - ti_sci_device_get_clcnt - Get context loss counter
+ *              @count: Pointer to Context Loss counter to populate
+ * - ti_sci_device_is_idle - Check if the device is requested to be idle
+ *              @r_state: true if requested to be idle
+ * - ti_sci_device_is_stop - Check if the device is requested to be stopped
+ *              @r_state: true if requested to be stopped
+ *              @curr_state: true if currently stopped.
+ * - ti_sci_device_is_on - Check if the device is requested to be ON
+ *              @r_state: true if requested to be ON
+ *              @curr_state: true if currently ON and active
+ * - ti_sci_device_is_trans - Check if the device is currently transitioning
+ *              @curr_state: true if currently transitioning.
+ * - ti_sci_device_set_resets - Command to set resets for
+ *                              device managed by TISCI
+ *              @reset_state: Device specific reset bit field
+ * - ti_sci_device_get_resets - Get reset state for device managed by TISCI
+ *              @reset_state: Pointer to reset state to populate
+ *
+ * NOTE: for all these functions, the following are generic in nature:
+ * @id:		Device Identifier
+ * Returns 0 for successful request, else returns corresponding error message.
+ *
+ * Request for the device - NOTE: the client MUST maintain integrity of
+ * usage count by balancing get_device with put_device. No refcounting is
+ * managed by driver for that purpose.
+ */
+int ti_sci_device_set_state(uint32_t id, uint32_t flags, uint8_t state);
+int ti_sci_device_get_state(uint32_t id,  uint32_t *clcnt,  uint32_t *resets,
+			    uint8_t *p_state,  uint8_t *c_state);
+int ti_sci_device_get(uint32_t id);
+int ti_sci_device_idle(uint32_t id);
+int ti_sci_device_put(uint32_t id);
+int ti_sci_device_is_valid(uint32_t id);
+int ti_sci_device_get_clcnt(uint32_t id, uint32_t *count);
+int ti_sci_device_is_idle(uint32_t id, bool *r_state);
+int ti_sci_device_is_stop(uint32_t id, bool *r_state,  bool *curr_state);
+int ti_sci_device_is_on(uint32_t id, bool *r_state,  bool *curr_state);
+int ti_sci_device_is_trans(uint32_t id, bool *curr_state);
+int ti_sci_device_set_resets(uint32_t id, uint32_t reset_state);
+int ti_sci_device_get_resets(uint32_t id, uint32_t *reset_state);
+
+/**
+ * Clock control operations
+ *
+ * - ti_sci_clock_set_state - Set clock state helper
+ *              @flags: Header flags as needed
+ *              @state: State to request for the clock.
+ * - ti_sci_clock_get_state - Get clock state helper
+ *              @programmed_state: State requested for clock to move to
+ *              @current_state: State that the clock is currently in
+ * - ti_sci_clock_get - Get control of a clock from TI SCI
+ *              @needs_ssc: 'true' iff Spread Spectrum clock is desired
+ *              @can_change_freq: 'true' iff frequency change is desired
+ *              @enable_input_term: 'true' iff input termination is desired
+ * - ti_sci_clock_idle - Idle a clock which is in our control
+ * - ti_sci_clock_put - Release a clock from our control
+ * - ti_sci_clock_is_auto - Is the clock being auto managed
+ *              @req_state: state indicating if the clock is auto managed
+ * - ti_sci_clock_is_on - Is the clock ON
+ *              @req_state: state indicating if the clock is managed by us and enabled
+ *              @curr_state: state indicating if the clock is ready for operation
+ * - ti_sci_clock_is_off - Is the clock OFF
+ *              @req_state: state indicating if the clock is managed by us and disabled
+ *              @curr_state: state indicating if the clock is NOT ready for operation
+ * - ti_sci_clock_set_parent - Set the clock source of a specific device clock
+ *              @parent_id: Parent clock identifier to set
+ * - ti_sci_clock_get_parent - Get current parent clock source
+ *              @parent_id: Current clock parent
+ * - ti_sci_clock_get_num_parents - Get num parents of the current clk source
+ *              @num_parents: Returns he number of parents to the current clock.
+ * - ti_sci_clock_get_match_freq - Find a good match for frequency
+ *              @match_freq: Frequency match in Hz response.
+ * - ti_sci_clock_set_freq - Set a frequency for clock
+ * - ti_sci_clock_get_freq - Get current frequency
+ *              @freq: Currently frequency in Hz
+ *
+ * NOTE: for all these functions, the following are generic in nature:
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has its own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @min_freq:	The minimum allowable frequency in Hz. This is the minimum
+ *		allowable programmed frequency and does not account for clock
+ *		tolerances and jitter.
+ * @target_freq: The target clock frequency in Hz. A frequency will be
+ *		processed as close to this target frequency as possible.
+ * @max_freq:	The maximum allowable frequency in Hz. This is the maximum
+ *		allowable programmed frequency and does not account for clock
+ *		tolerances and jitter.
+ * Returns 0 for successful request, else returns corresponding error message.
+ *
+ * Request for the clock - NOTE: the client MUST maintain integrity of
+ * usage count by balancing get_clock with put_clock. No refcounting is
+ * managed by driver for that purpose.
+ */
+int ti_sci_clock_set_state(uint32_t dev_id, uint8_t clk_id,
+			   uint32_t flags, uint8_t state);
+int ti_sci_clock_get_state(uint32_t dev_id, uint8_t clk_id,
+			   uint8_t *programmed_state, uint8_t *current_state);
+int ti_sci_clock_get(uint32_t dev_id, uint8_t clk_id,
+		     bool needs_ssc, bool can_change_freq,
+		     bool enable_input_term);
+int ti_sci_clock_idle(uint32_t dev_id, uint8_t clk_id);
+int ti_sci_clock_put(uint32_t dev_id, uint8_t clk_id);
+int ti_sci_clock_is_auto(uint32_t dev_id, uint8_t clk_id,
+			 bool *req_state);
+int ti_sci_clock_is_on(uint32_t dev_id, uint8_t clk_id,
+		       bool *req_state, bool *curr_state);
+int ti_sci_clock_is_off(uint32_t dev_id, uint8_t clk_id,
+			bool *req_state, bool *curr_state);
+int ti_sci_clock_set_parent(uint32_t dev_id, uint8_t clk_id,
+			    uint8_t parent_id);
+int ti_sci_clock_get_parent(uint32_t dev_id, uint8_t clk_id,
+			    uint8_t *parent_id);
+int ti_sci_clock_get_num_parents(uint32_t dev_id, uint8_t clk_id,
+				 uint8_t *num_parents);
+int ti_sci_clock_get_match_freq(uint32_t dev_id, uint8_t clk_id,
+				uint64_t min_freq, uint64_t target_freq,
+				uint64_t max_freq, uint64_t *match_freq);
+int ti_sci_clock_set_freq(uint32_t dev_id, uint8_t clk_id,
+			  uint64_t min_freq, uint64_t target_freq,
+			  uint64_t max_freq);
+int ti_sci_clock_get_freq(uint32_t dev_id, uint8_t clk_id, uint64_t *freq);
+
+/**
+ * Core control operations
+ *
+ * - ti_sci_core_reboot() - Command to request system reset
+ *
+ * Return: 0 if all went well, else returns appropriate error value.
+ */
+int ti_sci_core_reboot(void);
+
+/**
+ * Processor control operations
+ *
+ * - ti_sci_proc_request - Command to request a physical processor control
+ * - ti_sci_proc_release - Command to release a physical processor control
+ * - ti_sci_proc_handover - Command to handover a physical processor control to
+ *                          a host in the processor's access control list.
+ *              @host_id: Host ID to get the control of the processor
+ * - ti_sci_proc_set_boot_cfg - Command to set the processor boot configuration flags
+ *              @config_flags_set: Configuration flags to be set
+ *              @config_flags_clear: Configuration flags to be cleared.
+ * - ti_sci_proc_set_boot_ctrl - Command to set the processor boot control flags
+ *              @control_flags_set: Control flags to be set
+ *              @control_flags_clear: Control flags to be cleared
+ * - ti_sci_proc_auth_boot_image - Command to authenticate and load the image
+ *                                 and then set the processor configuration flags.
+ *              @cert_addr: Memory address at which payload image certificate is located.
+ * - ti_sci_proc_get_boot_status - Command to get the processor boot status
+ *
+ * NOTE: for all these functions, the following are generic in nature:
+ * @proc_id:	Processor ID
+ * Returns 0 for successful request, else returns corresponding error message.
+ */
+int ti_sci_proc_request(uint8_t proc_id);
+int ti_sci_proc_release(uint8_t proc_id);
+int ti_sci_proc_handover(uint8_t proc_id, uint8_t host_id);
+int ti_sci_proc_set_boot_cfg(uint8_t proc_id, uint64_t bootvector,
+			     uint32_t config_flags_set,
+			     uint32_t config_flags_clear);
+int ti_sci_proc_set_boot_ctrl(uint8_t proc_id, uint32_t control_flags_set,
+			      uint32_t control_flags_clear);
+int ti_sci_proc_auth_boot_image(uint8_t proc_id, uint64_t cert_addr);
+int ti_sci_proc_get_boot_status(uint8_t proc_id, uint64_t *bv,
+				uint32_t *cfg_flags,
+				uint32_t *ctrl_flags,
+				uint32_t *sts_flags);
+
+/**
+ * ti_sci_init() - Basic initialization
+ *
+ * Return: 0 if all goes good, else appropriate error message.
+ */
+int ti_sci_init(void);
+
+#endif	/* __TI_SCI_H */

plat/ti/k3/common/drivers/ti_sci/ti_sci_protocol.h

+/*
+ * Texas Instruments System Control Interface (TISCI) Protocol
+ *
+ * Communication protocol with TI SCI hardware
+ * The system works in a message response protocol
+ * See: http://processors.wiki.ti.com/index.php/TISCI for details
+ *
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __TI_SCI_PROTOCOL_H
+#define __TI_SCI_PROTOCOL_H
+
+#include <stdint.h>
+
+/* Generic Messages */
+#define TI_SCI_MSG_ENABLE_WDT		0x0000
+#define TI_SCI_MSG_WAKE_RESET		0x0001
+#define TI_SCI_MSG_VERSION		0x0002
+#define TI_SCI_MSG_WAKE_REASON		0x0003
+#define TI_SCI_MSG_GOODBYE		0x0004
+#define TI_SCI_MSG_SYS_RESET		0x0005
+
+/* Device requests */
+#define TI_SCI_MSG_SET_DEVICE_STATE	0x0200
+#define TI_SCI_MSG_GET_DEVICE_STATE	0x0201
+#define TI_SCI_MSG_SET_DEVICE_RESETS	0x0202
+
+/* Clock requests */
+#define TI_SCI_MSG_SET_CLOCK_STATE	0x0100
+#define TI_SCI_MSG_GET_CLOCK_STATE	0x0101
+#define TI_SCI_MSG_SET_CLOCK_PARENT	0x0102
+#define TI_SCI_MSG_GET_CLOCK_PARENT	0x0103
+#define TI_SCI_MSG_GET_NUM_CLOCK_PARENTS 0x0104
+#define TI_SCI_MSG_SET_CLOCK_FREQ	0x010c
+#define TI_SCI_MSG_QUERY_CLOCK_FREQ	0x010d
+#define TI_SCI_MSG_GET_CLOCK_FREQ	0x010e
+
+/* Processor Control Messages */
+#define TISCI_MSG_PROC_REQUEST		0xc000
+#define TISCI_MSG_PROC_RELEASE		0xc001
+#define TISCI_MSG_PROC_HANDOVER		0xc005
+#define TISCI_MSG_SET_PROC_BOOT_CONFIG	0xc100
+#define TISCI_MSG_SET_PROC_BOOT_CTRL	0xc101
+#define TISCI_MSG_PROC_AUTH_BOOT_IMIAGE	0xc120
+#define TISCI_MSG_GET_PROC_BOOT_STATUS	0xc400
+
+/**
+ * struct ti_sci_msg_hdr - Generic Message Header for All messages and responses
+ * @type:	Type of messages: One of TI_SCI_MSG* values
+ * @host:	Host of the message
+ * @seq:	Message identifier indicating a transfer sequence
+ * @flags:	Flag for the message
+ */
+struct ti_sci_msg_hdr {
+	uint16_t type;
+	uint8_t host;
+	uint8_t seq;
+#define TI_SCI_MSG_FLAG(val)			(1 << (val))
+#define TI_SCI_FLAG_REQ_GENERIC_NORESPONSE	0x0
+#define TI_SCI_FLAG_REQ_ACK_ON_RECEIVED		TI_SCI_MSG_FLAG(0)
+#define TI_SCI_FLAG_REQ_ACK_ON_PROCESSED	TI_SCI_MSG_FLAG(1)
+#define TI_SCI_FLAG_RESP_GENERIC_NACK		0x0
+#define TI_SCI_FLAG_RESP_GENERIC_ACK		TI_SCI_MSG_FLAG(1)
+	/* Additional Flags */
+	uint32_t flags;
+} __packed;
+
+/**
+ * struct ti_sci_msg_resp_version - Response for a message
+ * @hdr:		Generic header
+ * @firmware_description: String describing the firmware
+ * @firmware_revision:	Firmware revision
+ * @abi_major:		Major version of the ABI that firmware supports
+ * @abi_minor:		Minor version of the ABI that firmware supports
+ *
+ * In general, ABI version changes follow the rule that minor version increments
+ * are backward compatible. Major revision changes in ABI may not be
+ * backward compatible.
+ *
+ * Response to a generic message with message type TI_SCI_MSG_VERSION
+ */
+struct ti_sci_msg_resp_version {
+	struct ti_sci_msg_hdr hdr;
+#define FIRMWARE_DESCRIPTION_LENGTH 32
+	char firmware_description[FIRMWARE_DESCRIPTION_LENGTH];
+	uint16_t firmware_revision;
+	uint8_t abi_major;
+	uint8_t abi_minor;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_reboot - Reboot the SoC
+ * @hdr:	Generic Header
+ *
+ * Request type is TI_SCI_MSG_SYS_RESET, responded with a generic
+ * ACK/NACK message.
+ */
+struct ti_sci_msg_req_reboot {
+	struct ti_sci_msg_hdr hdr;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_set_device_state - Set the desired state of the device
+ * @hdr:		Generic header
+ * @id:	Indicates which device to modify
+ * @reserved: Reserved space in message, must be 0 for backward compatibility
+ * @state: The desired state of the device.
+ *
+ * Certain flags can also be set to alter the device state:
+ * + MSG_FLAG_DEVICE_WAKE_ENABLED - Configure the device to be a wake source.
+ * The meaning of this flag will vary slightly from device to device and from
+ * SoC to SoC but it generally allows the device to wake the SoC out of deep
+ * suspend states.
+ * + MSG_FLAG_DEVICE_RESET_ISO - Enable reset isolation for this device.
+ * + MSG_FLAG_DEVICE_EXCLUSIVE - Claim this device exclusively. When passed
+ * with STATE_RETENTION or STATE_ON, it will claim the device exclusively.
+ * If another host already has this device set to STATE_RETENTION or STATE_ON,
+ * the message will fail. Once successful, other hosts attempting to set
+ * STATE_RETENTION or STATE_ON will fail.
+ *
+ * Request type is TI_SCI_MSG_SET_DEVICE_STATE, responded with a generic
+ * ACK/NACK message.
+ */
+struct ti_sci_msg_req_set_device_state {
+	/* Additional hdr->flags options */
+#define MSG_FLAG_DEVICE_WAKE_ENABLED	TI_SCI_MSG_FLAG(8)
+#define MSG_FLAG_DEVICE_RESET_ISO	TI_SCI_MSG_FLAG(9)
+#define MSG_FLAG_DEVICE_EXCLUSIVE	TI_SCI_MSG_FLAG(10)
+	struct ti_sci_msg_hdr hdr;
+	uint32_t id;
+	uint32_t reserved;
+
+#define MSG_DEVICE_SW_STATE_AUTO_OFF	0
+#define MSG_DEVICE_SW_STATE_RETENTION	1
+#define MSG_DEVICE_SW_STATE_ON		2
+	uint8_t state;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_get_device_state - Request to get device.
+ * @hdr:		Generic header
+ * @id:		Device Identifier
+ *
+ * Request type is TI_SCI_MSG_GET_DEVICE_STATE, responded device state
+ * information
+ */
+struct ti_sci_msg_req_get_device_state {
+	struct ti_sci_msg_hdr hdr;
+	uint32_t id;
+} __packed;
+
+/**
+ * struct ti_sci_msg_resp_get_device_state - Response to get device request.
+ * @hdr:		Generic header
+ * @context_loss_count: Indicates how many times the device has lost context. A
+ *	driver can use this monotonic counter to determine if the device has
+ *	lost context since the last time this message was exchanged.
+ * @resets: Programmed state of the reset lines.
+ * @programmed_state:	The state as programmed by set_device.
+ *			- Uses the MSG_DEVICE_SW_* macros
+ * @current_state:	The actual state of the hardware.
+ *
+ * Response to request TI_SCI_MSG_GET_DEVICE_STATE.
+ */
+struct ti_sci_msg_resp_get_device_state {
+	struct ti_sci_msg_hdr hdr;
+	uint32_t context_loss_count;
+	uint32_t resets;
+	uint8_t programmed_state;
+#define MSG_DEVICE_HW_STATE_OFF		0
+#define MSG_DEVICE_HW_STATE_ON		1
+#define MSG_DEVICE_HW_STATE_TRANS	2
+	uint8_t current_state;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_set_device_resets - Set the desired resets
+ *				configuration of the device
+ * @hdr:		Generic header
+ * @id:	Indicates which device to modify
+ * @resets: A bit field of resets for the device. The meaning, behavior,
+ *	and usage of the reset flags are device specific. 0 for a bit
+ *	indicates releasing the reset represented by that bit while 1
+ *	indicates keeping it held.
+ *
+ * Request type is TI_SCI_MSG_SET_DEVICE_RESETS, responded with a generic
+ * ACK/NACK message.
+ */
+struct ti_sci_msg_req_set_device_resets {
+	struct ti_sci_msg_hdr hdr;
+	uint32_t id;
+	uint32_t resets;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_set_clock_state - Request to setup a Clock state
+ * @hdr:	Generic Header, Certain flags can be set specific to the clocks:
+ *		MSG_FLAG_CLOCK_ALLOW_SSC: Allow this clock to be modified
+ *		via spread spectrum clocking.
+ *		MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE: Allow this clock's
+ *		frequency to be changed while it is running so long as it
+ *		is within the min/max limits.
+ *		MSG_FLAG_CLOCK_INPUT_TERM: Enable input termination, this
+ *		is only applicable to clock inputs on the SoC pseudo-device.
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has it's own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @request_state: Request the state for the clock to be set to.
+ *		MSG_CLOCK_SW_STATE_UNREQ: The IP does not require this clock,
+ *		it can be disabled, regardless of the state of the device
+ *		MSG_CLOCK_SW_STATE_AUTO: Allow the System Controller to
+ *		automatically manage the state of this clock. If the device
+ *		is enabled, then the clock is enabled. If the device is set
+ *		to off or retention, then the clock is internally set as not
+ *		being required by the device.(default)
+ *		MSG_CLOCK_SW_STATE_REQ:  Configure the clock to be enabled,
+ *		regardless of the state of the device.
+ *
+ * Normally, all required clocks are managed by TISCI entity, this is used
+ * only for specific control *IF* required. Auto managed state is
+ * MSG_CLOCK_SW_STATE_AUTO, in other states, TISCI entity assume remote
+ * will explicitly control.
+ *
+ * Request type is TI_SCI_MSG_SET_CLOCK_STATE, response is a generic
+ * ACK or NACK message.
+ */
+struct ti_sci_msg_req_set_clock_state {
+	/* Additional hdr->flags options */
+#define MSG_FLAG_CLOCK_ALLOW_SSC		TI_SCI_MSG_FLAG(8)
+#define MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE	TI_SCI_MSG_FLAG(9)
+#define MSG_FLAG_CLOCK_INPUT_TERM		TI_SCI_MSG_FLAG(10)
+	struct ti_sci_msg_hdr hdr;
+	uint32_t dev_id;
+	uint8_t clk_id;
+#define MSG_CLOCK_SW_STATE_UNREQ	0
+#define MSG_CLOCK_SW_STATE_AUTO		1
+#define MSG_CLOCK_SW_STATE_REQ		2
+	uint8_t request_state;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_get_clock_state - Request for clock state
+ * @hdr:	Generic Header
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has it's own set of clock inputs. This indexes
+ *		which clock input to get state of.
+ *
+ * Request type is TI_SCI_MSG_GET_CLOCK_STATE, response is state
+ * of the clock
+ */
+struct ti_sci_msg_req_get_clock_state {
+	struct ti_sci_msg_hdr hdr;
+	uint32_t dev_id;
+	uint8_t clk_id;
+} __packed;
+
+/**
+ * struct ti_sci_msg_resp_get_clock_state - Response to get clock state
+ * @hdr:	Generic Header
+ * @programmed_state: Any programmed state of the clock. This is one of
+ *		MSG_CLOCK_SW_STATE* values.
+ * @current_state: Current state of the clock. This is one of:
+ *		MSG_CLOCK_HW_STATE_NOT_READY: Clock is not ready
+ *		MSG_CLOCK_HW_STATE_READY: Clock is ready
+ *
+ * Response to TI_SCI_MSG_GET_CLOCK_STATE.
+ */
+struct ti_sci_msg_resp_get_clock_state {
+	struct ti_sci_msg_hdr hdr;
+	uint8_t programmed_state;
+#define MSG_CLOCK_HW_STATE_NOT_READY	0
+#define MSG_CLOCK_HW_STATE_READY	1
+	uint8_t current_state;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_set_clock_parent - Set the clock parent
+ * @hdr:	Generic Header
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has it's own set of clock inputs. This indexes
+ *		which clock input to modify.
+ * @parent_id:	The new clock parent is selectable by an index via this
+ *		parameter.
+ *
+ * Request type is TI_SCI_MSG_SET_CLOCK_PARENT, response is generic
+ * ACK / NACK message.
+ */
+struct ti_sci_msg_req_set_clock_parent {
+	struct ti_sci_msg_hdr hdr;
+	uint32_t dev_id;
+	uint8_t clk_id;
+	uint8_t parent_id;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_get_clock_parent - Get the clock parent
+ * @hdr:	Generic Header
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *		Each device has it's own set of clock inputs. This indexes
+ *		which clock input to get the parent for.
+ *
+ * Request type is TI_SCI_MSG_GET_CLOCK_PARENT, response is parent information
+ */
+struct ti_sci_msg_req_get_clock_parent {
+	struct ti_sci_msg_hdr hdr;
+	uint32_t dev_id;
+	uint8_t clk_id;
+} __packed;
+
+/**
+ * struct ti_sci_msg_resp_get_clock_parent - Response with clock parent
+ * @hdr:	Generic Header
+ * @parent_id:	The current clock parent
+ *
+ * Response to TI_SCI_MSG_GET_CLOCK_PARENT.
+ */
+struct ti_sci_msg_resp_get_clock_parent {
+	struct ti_sci_msg_hdr hdr;
+	uint8_t parent_id;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_get_clock_num_parents - Request to get clock parents
+ * @hdr:	Generic header
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *
+ * This request provides information about how many clock parent options
+ * are available for a given clock to a device. This is typically used
+ * for input clocks.
+ *
+ * Request type is TI_SCI_MSG_GET_NUM_CLOCK_PARENTS, response is appropriate
+ * message, or NACK in case of inability to satisfy request.
+ */
+struct ti_sci_msg_req_get_clock_num_parents {
+	struct ti_sci_msg_hdr hdr;
+	uint32_t dev_id;
+	uint8_t clk_id;
+} __packed;
+
+/**
+ * struct ti_sci_msg_resp_get_clock_num_parents - Response for get clk parents
+ * @hdr:		Generic header
+ * @num_parents:	Number of clock parents
+ *
+ * Response to TI_SCI_MSG_GET_NUM_CLOCK_PARENTS
+ */
+struct ti_sci_msg_resp_get_clock_num_parents {
+	struct ti_sci_msg_hdr hdr;
+	uint8_t num_parents;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_query_clock_freq - Request to query a frequency
+ * @hdr:	Generic Header
+ * @dev_id:	Device identifier this request is for
+ * @min_freq_hz: The minimum allowable frequency in Hz. This is the minimum
+ *		allowable programmed frequency and does not account for clock
+ *		tolerances and jitter.
+ * @target_freq_hz: The target clock frequency. A frequency will be found
+ *		as close to this target frequency as possible.
+ * @max_freq_hz: The maximum allowable frequency in Hz. This is the maximum
+ *		allowable programmed frequency and does not account for clock
+ *		tolerances and jitter.
+ * @clk_id:	Clock identifier for the device for this request.
+ *
+ * NOTE: Normally clock frequency management is automatically done by TISCI
+ * entity. In case of specific requests, TISCI evaluates capability to achieve
+ * requested frequency within provided range and responds with
+ * result message.
+ *
+ * Request type is TI_SCI_MSG_QUERY_CLOCK_FREQ, response is appropriate message,
+ * or NACK in case of inability to satisfy request.
+ */
+struct ti_sci_msg_req_query_clock_freq {
+	struct ti_sci_msg_hdr hdr;
+	uint32_t dev_id;
+	uint64_t min_freq_hz;
+	uint64_t target_freq_hz;
+	uint64_t max_freq_hz;
+	uint8_t clk_id;
+} __packed;
+
+/**
+ * struct ti_sci_msg_resp_query_clock_freq - Response to a clock frequency query
+ * @hdr:	Generic Header
+ * @freq_hz:	Frequency that is the best match in Hz.
+ *
+ * Response to request type TI_SCI_MSG_QUERY_CLOCK_FREQ. NOTE: if the request
+ * cannot be satisfied, the message will be of type NACK.
+ */
+struct ti_sci_msg_resp_query_clock_freq {
+	struct ti_sci_msg_hdr hdr;
+	uint64_t freq_hz;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_set_clock_freq - Request to setup a clock frequency
+ * @hdr:	Generic Header
+ * @dev_id:	Device identifier this request is for
+ * @min_freq_hz: The minimum allowable frequency in Hz. This is the minimum
+ *		allowable programmed frequency and does not account for clock
+ *		tolerances and jitter.
+ * @target_freq_hz: The target clock frequency. The clock will be programmed
+ *		at a rate as close to this target frequency as possible.
+ * @max_freq_hz: The maximum allowable frequency in Hz. This is the maximum
+ *		allowable programmed frequency and does not account for clock
+ *		tolerances and jitter.
+ * @clk_id:	Clock identifier for the device for this request.
+ *
+ * NOTE: Normally clock frequency management is automatically done by TISCI
+ * entity. In case of specific requests, TISCI evaluates capability to achieve
+ * requested range and responds with success/failure message.
+ *
+ * This sets the desired frequency for a clock within an allowable
+ * range. This message will fail on an enabled clock unless
+ * MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE is set for the clock. Additionally,
+ * if other clocks have their frequency modified due to this message,
+ * they also must have the MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE or be disabled.
+ *
+ * Calling set frequency on a clock input to the SoC pseudo-device will
+ * inform the PMMC of that clock's frequency. Setting a frequency of
+ * zero will indicate the clock is disabled.
+ *
+ * Calling set frequency on clock outputs from the SoC pseudo-device will
+ * function similarly to setting the clock frequency on a device.
+ *
+ * Request type is TI_SCI_MSG_SET_CLOCK_FREQ, response is a generic ACK/NACK
+ * message.
+ */
+struct ti_sci_msg_req_set_clock_freq {
+	struct ti_sci_msg_hdr hdr;
+	uint32_t dev_id;
+	uint64_t min_freq_hz;
+	uint64_t target_freq_hz;
+	uint64_t max_freq_hz;
+	uint8_t clk_id;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_get_clock_freq - Request to get the clock frequency
+ * @hdr:	Generic Header
+ * @dev_id:	Device identifier this request is for
+ * @clk_id:	Clock identifier for the device for this request.
+ *
+ * NOTE: Normally clock frequency management is automatically done by TISCI
+ * entity. In some cases, clock frequencies are configured by host.
+ *
+ * Request type is TI_SCI_MSG_GET_CLOCK_FREQ, responded with clock frequency
+ * that the clock is currently at.
+ */
+struct ti_sci_msg_req_get_clock_freq {
+	struct ti_sci_msg_hdr hdr;
+	uint32_t dev_id;
+	uint8_t clk_id;
+} __packed;
+
+/**
+ * struct ti_sci_msg_resp_get_clock_freq - Response of clock frequency request
+ * @hdr:	Generic Header
+ * @freq_hz:	Frequency that the clock is currently on, in Hz.
+ *
+ * Response to request type TI_SCI_MSG_GET_CLOCK_FREQ.
+ */
+struct ti_sci_msg_resp_get_clock_freq {
+	struct ti_sci_msg_hdr hdr;
+	uint64_t freq_hz;
+} __packed;
+
+#define TISCI_ADDR_LOW_MASK		0x00000000ffffffff
+#define TISCI_ADDR_HIGH_MASK		0xffffffff00000000
+#define TISCI_ADDR_HIGH_SHIFT		32
+
+/**
+ * struct ti_sci_msg_req_proc_request - Request a processor
+ *
+ * @hdr:		Generic Header
+ * @processor_id:	ID of processor
+ *
+ * Request type is TISCI_MSG_PROC_REQUEST, response is a generic ACK/NACK
+ * message.
+ */
+struct ti_sci_msg_req_proc_request {
+	struct ti_sci_msg_hdr hdr;
+	uint8_t processor_id;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_proc_release - Release a processor
+ *
+ * @hdr:		Generic Header
+ * @processor_id:	ID of processor
+ *
+ * Request type is TISCI_MSG_PROC_RELEASE, response is a generic ACK/NACK
+ * message.
+ */
+struct ti_sci_msg_req_proc_release {
+	struct ti_sci_msg_hdr hdr;
+	uint8_t processor_id;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_proc_handover - Handover a processor to a host
+ *
+ * @hdr:		Generic Header
+ * @processor_id:	ID of processor
+ * @host_id:		New Host we want to give control to
+ *
+ * Request type is TISCI_MSG_PROC_HANDOVER, response is a generic ACK/NACK
+ * message.
+ */
+struct ti_sci_msg_req_proc_handover {
+	struct ti_sci_msg_hdr hdr;
+	uint8_t processor_id;
+	uint8_t host_id;
+} __packed;
+
+/* A53 Config Flags */
+#define PROC_BOOT_CFG_FLAG_ARMV8_DBG_EN         0x00000001
+#define PROC_BOOT_CFG_FLAG_ARMV8_DBG_NIDEN      0x00000002
+#define PROC_BOOT_CFG_FLAG_ARMV8_DBG_SPIDEN     0x00000004
+#define PROC_BOOT_CFG_FLAG_ARMV8_DBG_SPNIDEN    0x00000008
+#define PROC_BOOT_CFG_FLAG_ARMV8_AARCH32        0x00000100
+
+/* R5 Config Flags */
+#define PROC_BOOT_CFG_FLAG_R5_DBG_EN            0x00000001
+#define PROC_BOOT_CFG_FLAG_R5_DBG_NIDEN         0x00000002
+#define PROC_BOOT_CFG_FLAG_R5_LOCKSTEP          0x00000100
+#define PROC_BOOT_CFG_FLAG_R5_TEINIT            0x00000200
+#define PROC_BOOT_CFG_FLAG_R5_NMFI_EN           0x00000400
+#define PROC_BOOT_CFG_FLAG_R5_TCM_RSTBASE       0x00000800
+#define PROC_BOOT_CFG_FLAG_R5_BTCM_EN           0x00001000
+#define PROC_BOOT_CFG_FLAG_R5_ATCM_EN           0x00002000
+
+/**
+ * struct ti_sci_msg_req_set_proc_boot_config - Set Processor boot configuration
+ * @hdr:		Generic Header
+ * @processor_id:	ID of processor
+ * @bootvector_low:	Lower 32bit (Little Endian) of boot vector
+ * @bootvector_high:	Higher 32bit (Little Endian) of boot vector
+ * @config_flags_set:	Optional Processor specific Config Flags to set.
+ *			Setting a bit here implies required bit sets to 1.
+ * @config_flags_clear:	Optional Processor specific Config Flags to clear.
+ *			Setting a bit here implies required bit gets cleared.
+ *
+ * Request type is TISCI_MSG_SET_PROC_BOOT_CONFIG, response is a generic
+ * ACK/NACK message.
+ */
+struct ti_sci_msg_req_set_proc_boot_config {
+	struct ti_sci_msg_hdr hdr;
+	uint8_t processor_id;
+	uint32_t bootvector_low;
+	uint32_t bootvector_high;
+	uint32_t config_flags_set;
+	uint32_t config_flags_clear;
+} __packed;
+
+/* R5 Control Flags */
+#define PROC_BOOT_CTRL_FLAG_R5_CORE_HALT                0x00000001
+
+/**
+ * struct ti_sci_msg_req_set_proc_boot_ctrl - Set Processor boot control flags
+ * @hdr:		Generic Header
+ * @processor_id:	ID of processor
+ * @config_flags_set:	Optional Processor specific Config Flags to set.
+ *			Setting a bit here implies required bit sets to 1.
+ * @config_flags_clear:	Optional Processor specific Config Flags to clear.
+ *			Setting a bit here implies required bit gets cleared.
+ *
+ * Request type is TISCI_MSG_SET_PROC_BOOT_CTRL, response is a generic ACK/NACK
+ * message.
+ */
+struct ti_sci_msg_req_set_proc_boot_ctrl {
+	struct ti_sci_msg_hdr hdr;
+	uint8_t processor_id;
+	uint32_t control_flags_set;
+	uint32_t control_flags_clear;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_proc_auth_start_image - Authenticate and start image
+ * @hdr:		Generic Header
+ * @processor_id:	ID of processor
+ * @cert_addr_low:	Lower 32bit (Little Endian) of certificate
+ * @cert_addr_high:	Higher 32bit (Little Endian) of certificate
+ *
+ * Request type is TISCI_MSG_PROC_AUTH_BOOT_IMAGE, response is a generic
+ * ACK/NACK message.
+ */
+struct ti_sci_msg_req_proc_auth_boot_image {
+	struct ti_sci_msg_hdr hdr;
+	uint8_t processor_id;
+	uint32_t cert_addr_low;
+	uint32_t cert_addr_high;
+} __packed;
+
+/**
+ * struct ti_sci_msg_req_get_proc_boot_status - Get processor boot status
+ * @hdr:		Generic Header
+ * @processor_id:	ID of processor
+ *
+ * Request type is TISCI_MSG_GET_PROC_BOOT_STATUS, response is appropriate
+ * message, or NACK in case of inability to satisfy request.
+ */
+struct ti_sci_msg_req_get_proc_boot_status {
+	struct ti_sci_msg_hdr hdr;
+	uint8_t processor_id;
+} __packed;
+
+/* ARMv8 Status Flags */
+#define PROC_BOOT_STATUS_FLAG_ARMV8_WFE			0x00000001
+#define PROC_BOOT_STATUS_FLAG_ARMV8_WFI			0x00000002
+
+/* R5 Status Flags */
+#define PROC_BOOT_STATUS_FLAG_R5_WFE			0x00000001
+#define PROC_BOOT_STATUS_FLAG_R5_WFI			0x00000002
+#define PROC_BOOT_STATUS_FLAG_R5_CLK_GATED		0x00000004
+#define PROC_BOOT_STATUS_FLAG_R5_LOCKSTEP_PERMITTED	0x00000100
+
+/**
+ * \brief Processor Status Response
+ * struct ti_sci_msg_resp_get_proc_boot_status - Processor boot status response
+ * @hdr:		Generic Header
+ * @processor_id:	ID of processor
+ * @bootvector_low:	Lower 32bit (Little Endian) of boot vector
+ * @bootvector_high:	Higher 32bit (Little Endian) of boot vector
+ * @config_flags:	Optional Processor specific Config Flags set.
+ * @control_flags:	Optional Processor specific Control Flags.
+ * @status_flags:	Optional Processor specific Status Flags set.
+ *
+ * Response to TISCI_MSG_GET_PROC_BOOT_STATUS.
+ */
+struct ti_sci_msg_resp_get_proc_boot_status {
+	struct ti_sci_msg_hdr hdr;
+	uint8_t processor_id;
+	uint32_t bootvector_low;
+	uint32_t bootvector_high;
+	uint32_t config_flags;
+	uint32_t control_flags;
+	uint32_t status_flags;
+} __packed;
+
+#endif /* __TI_SCI_PROTOCOL_H */

plat/ti/k3/common/k3_bl31_setup.c

@@ -14,6 +14,7 @@
 #include <platform_def.h>
 #include <k3_gicv3.h>
 #include <string.h>
+#include <ti_sci.h>
 
 /* Table of regions to map using the MMU */
 const mmap_region_t plat_arm_mmap[] = {
@@ -21,6 +22,9 @@ const mmap_region_t plat_arm_mmap[] = {
 	MAP_REGION_FLAT(K3_USART_BASE_ADDRESS, K3_USART_SIZE, MT_DEVICE | MT_RW | MT_SECURE),
 	MAP_REGION_FLAT(K3_GICD_BASE, K3_GICD_SIZE, MT_DEVICE | MT_RW | MT_SECURE),
 	MAP_REGION_FLAT(K3_GICR_BASE, K3_GICR_SIZE, MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(SEC_PROXY_RT_BASE, SEC_PROXY_RT_SIZE, MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(SEC_PROXY_SCFG_BASE, SEC_PROXY_SCFG_SIZE, MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(SEC_PROXY_DATA_BASE, SEC_PROXY_DATA_SIZE, MT_DEVICE | MT_RW | MT_SECURE),
 	{ /* sentinel */ }
 };
 
@@ -118,6 +122,8 @@ void bl31_platform_setup(void)
 {
 	k3_gic_driver_init(K3_GICD_BASE, K3_GICR_BASE);
 	k3_gic_init();
+
+	ti_sci_init();
 }
 
 void platform_mem_init(void)

plat/ti/k3/common/k3_psci.c

@@ -9,8 +9,11 @@
 #include <debug.h>
 #include <k3_gicv3.h>
 #include <psci.h>
+#include <platform.h>
 #include <stdbool.h>
 
+#include <ti_sci.h>
+
 #define STUB() ERROR("stub %s called\n", __func__)
 
 uintptr_t k3_sec_entrypoint;
@@ -33,9 +36,40 @@ static void k3_cpu_standby(plat_local_state_t cpu_state)
 
 static int k3_pwr_domain_on(u_register_t mpidr)
 {
-	sev();
-
-	/* TODO: Indicate to System firmware about powering up */
+	int core_id, proc, device, ret;
+
+	core_id = plat_core_pos_by_mpidr(mpidr);
+	if (core_id < 0) {
+		ERROR("Could not get target core id: %d\n", core_id);
+		return PSCI_E_INTERN_FAIL;
+	}
+
+	proc = PLAT_PROC_START_ID + core_id;
+	device = PLAT_PROC_DEVICE_START_ID + core_id;
+
+	ret = ti_sci_proc_request(proc);
+	if (ret) {
+		ERROR("Request for processor failed: %d\n", ret);
+		return PSCI_E_INTERN_FAIL;
+	}
+
+	ret = ti_sci_proc_set_boot_cfg(proc, k3_sec_entrypoint, 0, 0);
+	if (ret) {
+		ERROR("Request to set core boot address failed: %d\n", ret);
+		return PSCI_E_INTERN_FAIL;
+	}
+
+	ret = ti_sci_device_get(device);
+	if (ret) {
+		ERROR("Request to start core failed: %d\n", ret);
+		return PSCI_E_INTERN_FAIL;
+	}
+
+	ret = ti_sci_proc_release(proc);
+	if (ret) {
+		/* this is not fatal */
+		WARN("Could not release processor control: %d\n", ret);
+	}
 
 	return PSCI_E_SUCCESS;
 }
@@ -58,8 +92,8 @@ void k3_pwr_domain_on_finish(const psci_power_state_t *target_state)
 
 static void __dead2 k3_system_reset(void)
 {
-	/* TODO: Indicate to System firmware about system reset */
-	STUB();
+	/* Send the system reset request to system firmware */
+	ti_sci_core_reboot();
 
 	while (true)
 		wfi();

plat/ti/k3/common/plat_common.mk

@@ -36,6 +36,8 @@ PLAT_INCLUDES		+=	\
 				-I${PLAT_PATH}/include			\
 				-Iinclude/plat/arm/common/		\
 				-Iinclude/plat/arm/common/aarch64/	\
+				-I${PLAT_PATH}/common/drivers/sec_proxy	\
+				-I${PLAT_PATH}/common/drivers/ti_sci	\
 
 K3_CONSOLE_SOURCES	+=	\
 				drivers/console/aarch64/console.S	\
@@ -53,6 +55,12 @@ K3_PSCI_SOURCES		+=	\
 				plat/common/plat_psci_common.c		\
 				${PLAT_PATH}/common/k3_psci.c		\
 
+K3_SEC_PROXY_SOURCES	+=	\
+				${PLAT_PATH}/common/drivers/sec_proxy/sec_proxy.c \
+
+K3_TI_SCI_SOURCES	+=	\
+				${PLAT_PATH}/common/drivers/ti_sci/ti_sci.c \
+
 PLAT_BL_COMMON_SOURCES	+=	\
 				plat/arm/common/arm_common.c		\
 				lib/cpus/aarch64/cortex_a53.S		\
@@ -65,3 +73,5 @@ BL31_SOURCES		+=	\
 				${PLAT_PATH}/common/k3_topology.c	\
 				${K3_GIC_SOURCES}			\
 				${K3_PSCI_SOURCES}			\
+				${K3_SEC_PROXY_SOURCES}			\
+				${K3_TI_SCI_SOURCES}			\

plat/ti/k3/include/platform_def.h

@@ -106,7 +106,7 @@
  * runtime memory used, choose the smallest value needed to register the
  * required regions for each BL stage.
  */
-#define MAX_MMAP_REGIONS	8
+#define MAX_MMAP_REGIONS	11
 
 /*
  * Defines the total size of the address space in bytes. For example, for a 32
@@ -193,4 +193,17 @@
 #define K3_GICR_BASE  0x01880000
 #define K3_GICR_SIZE  0x100000
 
+#define SEC_PROXY_DATA_BASE	0x32C00000
+#define SEC_PROXY_DATA_SIZE	0x80000
+#define SEC_PROXY_SCFG_BASE	0x32800000
+#define SEC_PROXY_SCFG_SIZE	0x80000
+#define SEC_PROXY_RT_BASE	0x32400000
+#define SEC_PROXY_RT_SIZE	0x80000
+
+#define SEC_PROXY_TIMEOUT_US		1000000
+#define SEC_PROXY_MAX_MESSAGE_SIZE	56
+
+#define TI_SCI_HOST_ID			10
+#define TI_SCI_MAX_MESSAGE_SIZE		52
+
 #endif /* __PLATFORM_DEF_H__ */