+ }
+
+ rx_msg = kzalloc(ELE_PING_RSP_SZ << 2, GFP_KERNEL);
+ if (!rx_msg) {
+ ret = -ENOMEM;
+ return ret;
+ }
+
+ ret = plat_fill_cmd_msg_hdr(priv,
+ (struct se_msg_hdr *)&tx_msg->header,
+ ELE_PING_REQ, ELE_PING_REQ_SZ,
+ true);
+ if (ret) {
+ dev_err(dev, "Error: plat_fill_cmd_msg_hdr failed.\n");
+ goto exit;
+ }
+
+ priv->rx_msg = rx_msg;
+ ret = imx_ele_msg_send_rcv(priv, tx_msg);
+ if (ret)
+ goto exit;
+
+ ret = validate_rsp_hdr(priv,
+ priv->rx_msg->header,
+ ELE_PING_REQ,
+ ELE_PING_RSP_SZ,
+ true);
+ if (ret)
+ goto exit;
+
+ status = RES_STATUS(priv->rx_msg->data[0]);
+ if (status != priv->success_tag) {
+ dev_err(dev, "Command Id[%d], Response Failure = 0x%x",
+ ELE_PING_REQ, status);
+ ret = -1;
+ }
+exit:
+ return ret;
+}
+
+int ele_service_swap(struct device *dev,
+ phys_addr_t addr,
+ u32 addr_size, u16 flag)
+{
+ struct se_if_priv *priv = dev_get_drvdata(dev);
+ struct se_api_msg *tx_msg __free(kfree);
+ struct se_api_msg *rx_msg __free(kfree);
+ u32 status;
+ int ret;
+
+ tx_msg = kzalloc(ELE_SERVICE_SWAP_REQ_MSG_SZ << 2, GFP_KERNEL);
+ if (!tx_msg) {
+ ret = -ENOMEM;
+ return ret;
+ }
+
+ rx_msg = kzalloc(ELE_SERVICE_SWAP_RSP_MSG_SZ << 2, GFP_KERNEL);
+ if (!rx_msg) {
+ ret = -ENOMEM;
+ return ret;
+ }
+
+ ret = plat_fill_cmd_msg_hdr(priv,
+ (struct se_msg_hdr *)&tx_msg->header,
+ ELE_SERVICE_SWAP_REQ,
+ ELE_SERVICE_SWAP_REQ_MSG_SZ,
+ true);
+ if (ret)
+ goto exit;
+
+ tx_msg->data[0] = flag;
+ tx_msg->data[1] = addr_size;
+ tx_msg->data[2] = ELE_NONE_VAL;
+ tx_msg->data[3] = lower_32_bits(addr);
+ tx_msg->data[4] = plat_add_msg_crc((uint32_t *)&tx_msg[0],
+ ELE_SERVICE_SWAP_REQ_MSG_SZ);
+ priv->rx_msg = rx_msg;
+ ret = imx_ele_msg_send_rcv(priv, tx_msg);
+ if (ret < 0)
+ goto exit;
+
+ ret = validate_rsp_hdr(priv,
+ priv->rx_msg->header,
+ ELE_SERVICE_SWAP_REQ,
+ ELE_SERVICE_SWAP_RSP_MSG_SZ,
+ true);
+ if (ret)
+ goto exit;
+
+ status = RES_STATUS(priv->rx_msg->data[0]);
+ if (status != priv->success_tag) {
+ dev_err(dev, "Command Id[%d], Response Failure = 0x%x",
+ ELE_SERVICE_SWAP_REQ, status);
+ ret = -1;
+ } else {
+ if (flag == ELE_IMEM_EXPORT)
+ ret = priv->rx_msg->data[1];
+ else
+ ret = 0;
+ }
+exit:
+
+ return ret;
+}
+
+int ele_fw_authenticate(struct device *dev, phys_addr_t addr)
+{
+ struct se_if_priv *priv = dev_get_drvdata(dev);
+ struct se_api_msg *tx_msg __free(kfree);
+ struct se_api_msg *rx_msg __free(kfree);
+ u32 status;
+ int ret;
+
+ tx_msg = kzalloc(ELE_FW_AUTH_REQ_SZ << 2, GFP_KERNEL);
+ if (!tx_msg) {
+ ret = -ENOMEM;
+ return ret;
+ }
+
+ rx_msg = kzalloc(ELE_FW_AUTH_RSP_MSG_SZ << 2, GFP_KERNEL);
+ if (!rx_msg) {
+ ret = -ENOMEM;
+ return ret;
+ }
+ ret = plat_fill_cmd_msg_hdr(priv,
+ (struct se_msg_hdr *)&tx_msg->header,
+ ELE_FW_AUTH_REQ,
+ ELE_FW_AUTH_REQ_SZ,
+ true);
+ if (ret)
+ goto exit;
+
+ tx_msg->data[0] = addr;
+ tx_msg->data[1] = 0x0;
+ tx_msg->data[2] = addr;
+
+ priv->rx_msg = rx_msg;
+ ret = imx_ele_msg_send_rcv(priv, tx_msg);
+ if (ret < 0)
+ goto exit;
+
+ ret = validate_rsp_hdr(priv,
+ priv->rx_msg->header,
+ ELE_FW_AUTH_REQ,
+ ELE_FW_AUTH_RSP_MSG_SZ,
+ true);
+ if (ret)
+ goto exit;
+
+ status = RES_STATUS(priv->rx_msg->data[0]);
+ if (status != priv->success_tag) {
+ dev_err(dev, "Command Id[%d], Response Failure = 0x%x",
+ ELE_FW_AUTH_REQ, status);
+ ret = -1;
+ }
+exit:
+
+ return ret;
+}
diff --git a/drivers/firmware/imx/ele_base_msg.h b/drivers/firmware/imx/ele_base_msg.h
new file mode 100644
index 000000000000..3b3d2bf04a84
--- /dev/null
+++ b/drivers/firmware/imx/ele_base_msg.h
@@ -0,0 +1,70 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2024 NXP
+ *
+ * Header file for the EdgeLock Enclave Base API(s).
+ */
+
+#ifndef ELE_BASE_MSG_H
+#define ELE_BASE_MSG_H
+
+#include <linux/device.h>
+#include <linux/types.h>
+
+#define WORD_SZ 4
+#define ELE_NONE_VAL 0x0
+
+#define ELE_SUCCESS_IND 0xD6
+
+#define ELE_GET_INFO_REQ 0xDA
+#define ELE_GET_INFO_REQ_MSG_SZ 0x10
+#define ELE_GET_INFO_RSP_MSG_SZ 0x08
+
+#define ELE_GET_INFO_BUFF_SZ 0x100
+#define ELE_GET_INFO_READ_SZ 0xA0
+
+#define DEFAULT_IMX_SOC_VER 0xA0
+#define SOC_VER_MASK 0xFFFF0000
+#define SOC_ID_MASK 0x0000FFFF
+struct soc_info {
+ u32 imem_state;
+ u8 major_ver;
+ u8 minor_ver;
+ u16 soc_id;
+ u16 soc_rev;
+ u64 serial_num;
+};
+
+#define GET_INFO_SOC_INFO_WORD_OFFSET 1
+#define GET_INFO_UUID_WORD_OFFSET 3
+#define GET_INFO_SL_NUM_MSB_WORD_OFF \
+ (GET_INFO_UUID_WORD_OFFSET + 3)
+#define GET_INFO_SL_NUM_LSB_WORD_OFF \
+ (GET_INFO_UUID_WORD_OFFSET + 0)
+
+#define ELE_PING_REQ 0x01
+#define ELE_PING_REQ_SZ 0x04
+#define ELE_PING_RSP_SZ 0x08
+
+#define ELE_SERVICE_SWAP_REQ 0xDF
+#define ELE_SERVICE_SWAP_REQ_MSG_SZ 0x18
+#define ELE_SERVICE_SWAP_RSP_MSG_SZ 0x0C
+#define ELE_IMEM_SIZE 0x10000
+#define ELE_IMEM_STATE_OK 0xCA
+#define ELE_IMEM_STATE_BAD 0xFE
+#define ELE_IMEM_STATE_WORD 0x27
+#define ELE_IMEM_STATE_MASK 0x00ff0000
+#define ELE_IMEM_EXPORT 0x1
+#define ELE_IMEM_IMPORT 0x2
+
+#define ELE_FW_AUTH_REQ 0x02
+#define ELE_FW_AUTH_REQ_SZ 0x10
+#define ELE_FW_AUTH_RSP_MSG_SZ 0x08
+
+int ele_get_info(struct device *dev, struct soc_info *s_info);
+int ele_ping(struct device *dev);
+int ele_service_swap(struct device *dev,
+ phys_addr_t addr,
+ u32 addr_size, u16 flag);
+int ele_fw_authenticate(struct device *dev, phys_addr_t addr);
+#endif
diff --git a/drivers/firmware/imx/ele_common.c b/drivers/firmware/imx/ele_common.c
new file mode 100644
index 000000000000..dcf7f9034653
--- /dev/null
+++ b/drivers/firmware/imx/ele_common.c
@@ -0,0 +1,341 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2024 NXP
+ */
+
+#include "ele_base_msg.h"
+#include "ele_common.h"
+
+u32 plat_add_msg_crc(u32 *msg, u32 msg_len)
+{
+ u32 nb_words = msg_len / (u32)sizeof(u32);
+ u32 crc = 0;
+ u32 i;
+
+ for (i = 0; i < nb_words - 1; i++)
+ crc ^= *(msg + i);
+
+ return crc;
+}
+
+int imx_ele_msg_rcv(struct se_if_priv *priv)
+{
+ u32 wait;
+ int err;
+
+ wait = msecs_to_jiffies(1000);
+ if (!wait_for_completion_timeout(&priv->done, wait)) {
+ dev_err(priv->dev,
+ "Error: wait_for_completion timed out.\n");
+ err = -ETIMEDOUT;
+ }
+
+ mutex_unlock(&priv->se_if_cmd_lock);
+ priv->no_dev_ctx_used = false;
+
+ return err;
+}
+
+int imx_ele_msg_send(struct se_if_priv *priv, void *mssg)
+{
+ bool is_cmd_lock_tobe_taken = false;
+ int err;
+
+ if (!priv->waiting_rsp_dev || priv->no_dev_ctx_used) {
+ is_cmd_lock_tobe_taken = true;
+ mutex_lock(&priv->se_if_cmd_lock);
+ }
+ scoped_guard(mutex, &priv->se_if_lock);
+
+ err = mbox_send_message(priv->tx_chan, mssg);
+ if (err < 0) {
+ dev_err(priv->dev, "Error: mbox_send_message failure.\n");
+ if (is_cmd_lock_tobe_taken)
+ mutex_unlock(&priv->se_if_cmd_lock);
+ return err;
+ }
+ err = 0;
+
+ return err;
+}
+
+int imx_ele_msg_send_rcv(struct se_if_priv *priv, void *mssg)
+{
+ int err;
+
+ priv->no_dev_ctx_used = true;
+ err = imx_ele_msg_send(priv, mssg);
+ if (err)
+ goto exit;
+
+ err = imx_ele_msg_rcv(priv);
+
+exit:
+ return err;
+}
+
+int imx_ele_miscdev_msg_rcv(struct se_if_device_ctx *dev_ctx)
+{
+ struct se_msg_hdr header = {0};
+ int err;
+
+ err = wait_event_interruptible(dev_ctx->wq, dev_ctx->pending_hdr != 0);
+ if (err)
+ dev_err(dev_ctx->dev,
+ "%s: Err[0x%x]:Interrupted by signal.\n",
+ dev_ctx->miscdev.name, err);
+
+ header = *((struct se_msg_hdr *) (&dev_ctx->temp_resp[0]));
+
+ if (header.tag == dev_ctx->priv->rsp_tag)
+ mutex_unlock(&dev_ctx->priv->se_if_cmd_lock);
+
+ return err;
+}
+
+int imx_ele_miscdev_msg_send(struct se_if_device_ctx *dev_ctx,
+ void *tx_msg, int tx_msg_sz)
+{
+ struct se_if_priv *priv = dev_ctx->priv;
+ struct se_msg_hdr header = {0};
+ int err;
+
+ header = *((struct se_msg_hdr *) tx_msg);
+
+ /*
+ * Check that the size passed as argument matches the size
+ * carried in the message.
+ */
+ err = header.size << 2;
+
+ if (err != tx_msg_sz) {
+ err = -EINVAL;
+ dev_err(priv->dev,
+ "%s: User buffer too small\n",
+ dev_ctx->miscdev.name);
+ goto exit;
+ }
+ /* Check the message is valid according to tags */
+ if (header.tag == priv->cmd_tag)
+ priv->waiting_rsp_dev = dev_ctx;
+ else if (header.tag == priv->rsp_tag) {
+ /* Check the device context can send the command */
+ if (dev_ctx != priv->cmd_receiver_dev) {
+ dev_err(priv->dev,
+ "%s: Channel not configured to send resp to FW.",
+ dev_ctx->miscdev.name);
+ err = -EPERM;
+ goto exit;
+ }
+ } else {
+ dev_err(priv->dev,
+ "%s: The message does not have a valid TAG\n",
+ dev_ctx->miscdev.name);
+ err = -EINVAL;
+ goto exit;
+ }
+ err = imx_ele_msg_send(priv, tx_msg);
+exit:
+ return err;
+}
+
+/*
+ * Callback called by mailbox FW, when data is received.
+ */
+void se_if_rx_callback(struct mbox_client *mbox_cl, void *msg)
+{
+ struct device *dev = mbox_cl->dev;
+ struct se_if_device_ctx *dev_ctx;
+ struct se_api_msg *rx_msg;
+ bool is_response = false;
+ struct se_if_priv *priv;
+ struct se_msg_hdr header;
+
+ priv = dev_get_drvdata(dev);
+ if (!priv) {
+ dev_err(dev, "SE-MU Priv data is NULL;");
+ return;
+ }
+
+ /* The function can be called with NULL msg */
+ if (!msg) {
+ dev_err(dev, "Message is invalid\n");
+ return;
+ }
+
+ header.tag = ((u8 *)msg)[TAG_OFFSET];
+ header.command = ((u8 *)msg)[CMD_OFFSET];
+ header.size = ((u8 *)msg)[SZ_OFFSET];
+ header.ver = ((u8 *)msg)[VER_OFFSET];
+
+ /* Incoming command: wake up the receiver if any. */
+ if (header.tag == priv->cmd_tag) {
+ dev_dbg(dev, "Selecting cmd receiver\n");
+ dev_ctx = priv->cmd_receiver_dev;
+ } else if (header.tag == priv->rsp_tag) {
+ if (priv->waiting_rsp_dev) {
+ dev_dbg(dev, "Selecting rsp waiter\n");
+ dev_ctx = priv->waiting_rsp_dev;
+ is_response = true;
+ } else {
+ /*
+ * Reading the EdgeLock Enclave response
+ * to the command, sent by other
+ * linux kernel services.
+ */
+ spin_lock(&priv->lock);
+ memcpy(&priv->rx_msg, msg, header.size << 2);
+
+ complete(&priv->done);
+ spin_unlock(&priv->lock);
+ return;
+ }
+ } else {
+ dev_err(dev, "Failed to select a device for message: %.8x\n",
+ *((u32 *) &header));
+ return;
+ }
+ /* Init reception */
+ rx_msg = kzalloc(header.size << 2, GFP_KERNEL);
+ if (rx_msg)
+ memcpy(rx_msg, msg, header.size << 2);
+
+ dev_ctx->temp_resp = (u32 *)rx_msg;
+ dev_ctx->temp_resp_size = header.size;
+
+ /* Allow user to read */
+ dev_ctx->pending_hdr = 1;
+ wake_up_interruptible(&dev_ctx->wq);
+
+ if (is_response)
+ priv->waiting_rsp_dev = NULL;
+}
+
+int validate_rsp_hdr(struct se_if_priv *priv, u32 header,
+ uint8_t msg_id, uint8_t sz, bool is_base_api)
+{
+ int ret = -EINVAL;
+ u32 size;
+ u32 cmd;
+ u32 tag;
+ u32 ver;
+
+ tag = MSG_TAG(header);
+ cmd = MSG_COMMAND(header);
+ size = MSG_SIZE(header);
+ ver = MSG_VER(header);
+
+ do {
+ if (tag != priv->rsp_tag) {
+ dev_err(priv->dev,
+ "MSG[0x%x] Hdr: Resp tag mismatch. (0x%x != 0x%x)",
+ msg_id, tag, priv->rsp_tag);
+ break;
+ }
+
+ if (cmd != msg_id) {
+ dev_err(priv->dev,
+ "MSG Header: Cmd id mismatch. (0x%x != 0x%x)",
+ cmd, msg_id);
+ break;
+ }
+
+ if (size != (sz >> 2)) {
+ dev_err(priv->dev,
+ "MSG[0x%x] Hdr: Cmd size mismatch. (0x%x != 0x%x)",
+ msg_id, size, (sz >> 2));
+ break;
+ }
+
+ if (is_base_api && (ver != priv->base_api_ver)) {
+ dev_err(priv->dev,
+ "MSG[0x%x] Hdr: Base API Vers mismatch. (0x%x != 0x%x)",
+ msg_id, ver, priv->base_api_ver);
+ break;
+ } else if (!is_base_api && ver != priv->fw_api_ver) {
+ dev_err(priv->dev,
+ "MSG[0x%x] Hdr: FW API Vers mismatch. (0x%x != 0x%x)",
+ msg_id, ver, priv->fw_api_ver);
+ break;
+ }
+
+ ret = 0;
+
+ } while (false);
+
+ return ret;
+}
+
+int se_save_imem_state(struct device *dev)
+{
+ struct se_if_priv *priv = dev_get_drvdata(dev);
+ int ret;
+
+ /* EXPORT command will save encrypted IMEM to given address,
+ * so later in resume, IMEM can be restored from the given
+ * address.
+ *
+ * Size must be at least 64 kB.
+ */
+ ret = ele_service_swap(dev,
+ priv->imem.phyaddr,
+ ELE_IMEM_SIZE,
+ ELE_IMEM_EXPORT);
+ if (ret < 0)
+ dev_err(dev, "Failed to export IMEM\n");
+ else
+ dev_info(dev,
+ "Exported %d bytes of encrypted IMEM\n",
+ ret);
+
+ return ret;
+}
+
+int se_restore_imem_state(struct device *dev)
+{
+ struct se_if_priv *priv = dev_get_drvdata(dev);
+ struct soc_info s_info;
+ int ret;
+
+ /* get info from ELE */
+ ret = ele_get_info(dev, &s_info);
+ if (ret) {
+ dev_err(dev, "Failed to get info from ELE.\n");
+ return ret;
+ }
+
+ /* Get IMEM state, if 0xFE then import IMEM */
+ if (s_info.imem_state == ELE_IMEM_STATE_BAD) {
+ /* IMPORT command will restore IMEM from the given
+ * address, here size is the actual size returned by ELE
+ * during the export operation
+ */
+ ret = ele_service_swap(dev,
+ priv->imem.phyaddr,
+ priv->imem.size,
+ ELE_IMEM_IMPORT);
+ if (ret) {
+ dev_err(dev, "Failed to import IMEM\n");
+ goto exit;
+ }
+ } else
+ goto exit;
+
+ /* After importing IMEM, check if IMEM state is equal to 0xCA
+ * to ensure IMEM is fully loaded and
+ * ELE functionality can be used.
+ */
+ ret = ele_get_info(dev, &s_info);
+ if (ret) {
+ dev_err(dev, "Failed to get info from ELE.\n");
+ goto exit;
+ }
+
+ if (s_info.imem_state == ELE_IMEM_STATE_OK)
+ dev_info(dev, "Successfully restored IMEM\n");
+ else
+ dev_err(dev, "Failed to restore IMEM\n");
+
+exit:
+ return ret;
+}
diff --git a/drivers/firmware/imx/ele_common.h b/drivers/firmware/imx/ele_common.h
new file mode 100644
index 000000000000..6e3a2114bb56
--- /dev/null
+++ b/drivers/firmware/imx/ele_common.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2024 NXP
+ */
+
+
+#ifndef __ELE_COMMON_H__
+#define __ELE_COMMON_H__
+
+#include "se_ctrl.h"
+
+#define IMX_ELE_FW_DIR "imx/ele/"
+
+uint32_t plat_add_msg_crc(uint32_t *msg, uint32_t msg_len);
+int imx_ele_miscdev_msg_rcv(struct se_if_device_ctx *priv);
+int imx_ele_miscdev_msg_send(struct se_if_device_ctx *dev_ctx,
+ void *tx_msg, int tx_msg_sz);
+int imx_ele_msg_rcv(struct se_if_priv *priv);
+int imx_ele_msg_send(struct se_if_priv *priv, void *mssg);
+int imx_ele_msg_send_rcv(struct se_if_priv *priv, void *mssg);
+void se_if_rx_callback(struct mbox_client *mbox_cl, void *msg);
+int validate_rsp_hdr(struct se_if_priv *priv, unsigned int header,
+ u8 msg_id, u8 sz, bool is_base_api);
+
+/* Fill a command message header with a given command ID and length in bytes. */
+static inline int plat_fill_cmd_msg_hdr(struct se_if_priv *priv,
+ struct se_msg_hdr *hdr,
+ u8 cmd,
+ u32 len,
+ bool is_base_api)
+{
+ hdr->tag = priv->cmd_tag;
+ hdr->ver = (is_base_api) ? priv->base_api_ver : priv->fw_api_ver;
+ hdr->command = cmd;
+ hdr->size = len >> 2;
+
+ return 0;
+}
+
+int se_save_imem_state(struct device *dev);
+int se_restore_imem_state(struct device *dev);
+
+#endif /*__ELE_COMMON_H__ */
diff --git a/drivers/firmware/imx/se_ctrl.c b/drivers/firmware/imx/se_ctrl.c
new file mode 100644
index 000000000000..11c5eaa7353f
--- /dev/null
+++ b/drivers/firmware/imx/se_ctrl.c
@@ -0,0 +1,1339 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2024 NXP
+ */
+
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/dev_printk.h>
+#include <linux/dma-mapping.h>
+#include <linux/errno.h>
+#include <linux/export.h>
+#include <linux/firmware.h>
+#include <linux/firmware/imx/se_api.h>
+#include <linux/genalloc.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/miscdevice.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/of_reserved_mem.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/sys_soc.h>
+#include <uapi/linux/se_ioctl.h>
+
+#include "ele_base_msg.h"
+#include "ele_common.h"
+#include "se_ctrl.h"
+
+#define RESERVED_DMA_POOL BIT(1)
+
+struct imx_se_node_info {
+ u8 se_if_id;
+ u8 se_if_did;
+ u8 max_dev_ctx;
+ u8 cmd_tag;
+ u8 rsp_tag;
+ u8 success_tag;
+ u8 base_api_ver;
+ u8 fw_api_ver;
+ u8 *se_name;
+ u8 *mbox_tx_name;
+ u8 *mbox_rx_name;
+ u8 *pool_name;
+ u8 *fw_name_in_rfs;
+ bool soc_register;
+ bool reserved_dma_ranges;
+ bool imem_mgmt;
+};
+
+struct imx_se_node_info_list {
+ u8 num_mu;
+ u16 soc_id;
+ u16 soc_rev;
+ struct imx_se_node_info info[];
+};
+
+static const struct imx_se_node_info_list imx8ulp_info = {
+ .num_mu = 1,
+ .soc_id = SOC_ID_OF_IMX8ULP,
+ .info = {
+ {
+ .se_if_id = 2,
+ .se_if_did = 7,
+ .max_dev_ctx = 4,
+ .cmd_tag = 0x17,
+ .rsp_tag = 0xe1,
+ .success_tag = 0xd6,
+ .base_api_ver = MESSAGING_VERSION_6,
+ .fw_api_ver = MESSAGING_VERSION_7,
+ .se_name = "hsm1",
+ .mbox_tx_name = "tx",
+ .mbox_rx_name = "rx",
+ .pool_name = "sram",
+ .fw_name_in_rfs = IMX_ELE_FW_DIR\
+ "mx8ulpa2ext-ahab-container.img",
+ .soc_register = true,
+ .reserved_dma_ranges = true,
+ .imem_mgmt = true,
+ },
+ },
+};
+
+static const struct imx_se_node_info_list imx93_info = {
+ .num_mu = 1,
+ .soc_id = SOC_ID_OF_IMX93,
+ .info = {
+ {
+ .se_if_id = 2,
+ .se_if_did = 3,
+ .max_dev_ctx = 4,
+ .cmd_tag = 0x17,
+ .rsp_tag = 0xe1,
+ .success_tag = 0xd6,
+ .base_api_ver = MESSAGING_VERSION_6,
+ .fw_api_ver = MESSAGING_VERSION_7,
+ .se_name = "hsm1",
+ .mbox_tx_name = "tx",
+ .mbox_rx_name = "rx",
+ .reserved_dma_ranges = true,
+ .imem_mgmt = true,
+ .soc_register = true,
+ },
+ },
+};
+
+static const struct of_device_id se_match[] = {
+ { .compatible = "fsl,imx8ulp-ele", .data = (void *)&imx8ulp_info},
+ { .compatible = "fsl,imx93-ele", .data = (void *)&imx93_info},
+ {},
+};
+
+static struct imx_se_node_info
+ *get_imx_se_node_info(struct imx_se_node_info_list *info_list,
+ const u32 idx)
+{
+ if (idx < 0 || idx > info_list->num_mu)
+ return NULL;
+
+ return &info_list->info[idx];
+}
+
+void *get_phy_buf_mem_pool(struct device *dev,
+ u8 *mem_pool_name,
+ dma_addr_t *buf,
+ u32 size)
+{
+ struct device_node *of_node = dev->of_node;
+ struct gen_pool *mem_pool;
+
+ mem_pool = of_gen_pool_get(of_node, mem_pool_name, 0);
+ if (!mem_pool) {
+ dev_err(dev,
+ "Unable to get sram pool = %s\n",
+ mem_pool_name);
+ return 0;
+ }
+
+ return gen_pool_dma_alloc(mem_pool, size, buf);
+}
+
+void free_phybuf_mem_pool(struct device *dev,
+ u8 *mem_pool_name,
+ u32 *buf,
+ u32 size)
+{
+ struct device_node *of_node = dev->of_node;
+ struct gen_pool *mem_pool;
+
+ mem_pool = of_gen_pool_get(of_node, mem_pool_name, 0);
+ if (!mem_pool)
+ dev_err(dev,
+ "%s: Failed: Unable to get sram pool.\n",
+ __func__);
+
+ gen_pool_free(mem_pool, (u64)buf, size);
+}
+
+static int imx_fetch_soc_info(struct device *dev)
+{
+ struct se_if_priv *priv = dev_get_drvdata(dev);
+ struct imx_se_node_info_list *info_list;
+ const struct imx_se_node_info *info;
+ struct soc_device_attribute *attr;
+ struct soc_device *sdev;
+ struct soc_info s_info;
+ int err = 0;
+
+ info = priv->info;
+ info_list = (struct imx_se_node_info_list *)
+ device_get_match_data(dev->parent);
+ if (info_list->soc_rev)
+ return err;
+
+ err = ele_get_info(dev, &s_info);
+ if (err)
+ s_info.major_ver = DEFAULT_IMX_SOC_VER;
+
+ info_list->soc_rev = s_info.soc_rev;
+
+ if (!info->soc_register)
+ return 0;
+
+ attr = devm_kzalloc(dev, sizeof(*attr), GFP_KERNEL);
+ if (!attr)
+ return -ENOMEM;
+
+ if (s_info.minor_ver)
+ attr->revision = devm_kasprintf(dev, GFP_KERNEL, "%x.%x",
+ s_info.major_ver,
+ s_info.minor_ver);
+ else
+ attr->revision = devm_kasprintf(dev, GFP_KERNEL, "%x",
+ s_info.major_ver);
+
+ switch (s_info.soc_id) {
+ case SOC_ID_OF_IMX8ULP:
+ attr->soc_id = devm_kasprintf(dev, GFP_KERNEL,
+ "i.MX8ULP");
+ break;
+ case SOC_ID_OF_IMX93:
+ attr->soc_id = devm_kasprintf(dev, GFP_KERNEL,
+ "i.MX93");
+ break;
+ }
+
+ err = of_property_read_string(of_root, "model",
+ &attr->machine);
+ if (err) {
+ devm_kfree(dev, attr);
+ return -EINVAL;
+ }
+ attr->family = devm_kasprintf(dev, GFP_KERNEL, "Freescale i.MX");
+
+ attr->serial_number
+ = devm_kasprintf(dev, GFP_KERNEL, "%016llX", s_info.serial_num);
+
+ sdev = soc_device_register(attr);
+ if (IS_ERR(sdev)) {
+ devm_kfree(dev, attr->soc_id);
+ devm_kfree(dev, attr->serial_number);
+ devm_kfree(dev, attr->revision);
+ devm_kfree(dev, attr->family);
+ devm_kfree(dev, attr->machine);
+ devm_kfree(dev, attr);
+ return PTR_ERR(sdev);
+ }
+
+ return 0;
+}
+
+/*
+ * File operations for user-space
+ */
+
+/* Write a message to the MU. */
+static ssize_t se_if_fops_write(struct file *fp, const char __user *buf,
+ size_t size, loff_t *ppos)
+{
+ struct se_api_msg *tx_msg __free(kfree);
+ struct se_if_device_ctx *dev_ctx;
+ struct se_if_priv *priv;
+ int err;
+
+ dev_ctx = container_of(fp->private_data,
+ struct se_if_device_ctx,
+ miscdev);
+ priv = dev_ctx->priv;
+ dev_dbg(priv->dev,
+ "%s: write from buf (%p)%zu, ppos=%lld\n",
+ dev_ctx->miscdev.name,
+ buf, size, ((ppos) ? *ppos : 0));
+
+ if (down_interruptible(&dev_ctx->fops_lock))
+ return -EBUSY;
+
+ if (dev_ctx->status != MU_OPENED) {
+ err = -EINVAL;
+ goto exit;
+ }
+
+ if (size < SE_MU_HDR_SZ) {
+ dev_err(priv->dev,
+ "%s: User buffer too small(%zu < %d)\n",
+ dev_ctx->miscdev.name,
+ size, SE_MU_HDR_SZ);
+ err = -ENOSPC;
+ goto exit;
+ }
+
+ tx_msg = memdup_user((void __user *)ppos, size);
+ if (!tx_msg) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ /* Copy data to buffer */
+ if (copy_from_user(tx_msg, buf, size)) {
+ err = -EFAULT;
+ dev_err(priv->dev,
+ "%s: Fail copy message from user\n",
+ dev_ctx->miscdev.name);
+ goto exit;
+ }
+
+ print_hex_dump_debug("from user ", DUMP_PREFIX_OFFSET, 4, 4,
+ tx_msg, size, false);
+
+ err = imx_ele_miscdev_msg_send(dev_ctx, tx_msg, size);
+
+exit:
+ up(&dev_ctx->fops_lock);
+ return err;
+}
+
+/*
+ * Read a message from the MU.
+ * Blocking until a message is available.
+ */
+static ssize_t se_if_fops_read(struct file *fp, char __user *buf,
+ size_t size, loff_t *ppos)
+{
+ struct se_if_device_ctx *dev_ctx;
+ struct se_buf_desc *b_desc;
+ struct se_if_priv *priv;
+ u32 size_to_copy;
+ int err;
+
+ dev_ctx = container_of(fp->private_data,
+ struct se_if_device_ctx,
+ miscdev);
+ priv = dev_ctx->priv;
+ dev_dbg(priv->dev,
+ "%s: read to buf %p(%zu), ppos=%lld\n",
+ dev_ctx->miscdev.name,
+ buf, size, ((ppos) ? *ppos : 0));
+
+ if (down_interruptible(&dev_ctx->fops_lock))
+ return -EBUSY;
+
+ if (dev_ctx->status != MU_OPENED) {
+ err = -EINVAL;
+ goto exit;
+ }
+
+ err = imx_ele_miscdev_msg_rcv(dev_ctx);
+ if (err)
+ goto exit;
+
+ /* Buffer containing the message from FW, is
+ * allocated in callback function.
+ * Check if buffer allocation failed.
+ */
+ if (!dev_ctx->temp_resp) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ dev_dbg(priv->dev,
+ "%s: %s %s\n",
+ dev_ctx->miscdev.name,
+ __func__,
+ "message received, start transmit to user");
+
+ /*
+ * Check that the size passed as argument is larger than
+ * the one carried in the message.
+ */
+ size_to_copy = dev_ctx->temp_resp_size << 2;
+ if (size_to_copy > size) {
+ dev_dbg(priv->dev,
+ "%s: User buffer too small (%zu < %d)\n",
+ dev_ctx->miscdev.name,
+ size, size_to_copy);
+ size_to_copy = size;
+ }
+
+ /*
+ * We may need to copy the output data to user before
+ * delivering the completion message.
+ */
+ while (!list_empty(&dev_ctx->pending_out)) {
+ b_desc = list_first_entry_or_null(&dev_ctx->pending_out,
+ struct se_buf_desc,
+ link);
+ if (!b_desc)
+ continue;
+
+ if (b_desc->usr_buf_ptr && b_desc->shared_buf_ptr) {
+
+ dev_dbg(priv->dev,
+ "%s: Copy output data to user\n",
+ dev_ctx->miscdev.name);
+ if (copy_to_user(b_desc->usr_buf_ptr,
+ b_desc->shared_buf_ptr,
+ b_desc->size)) {
+ dev_err(priv->dev,
+ "%s: Failure copying output data to user.",
+ dev_ctx->miscdev.name);
+ err = -EFAULT;
+ goto exit;
+ }
+ }
+
+ if (b_desc->shared_buf_ptr)
+ memset(b_desc->shared_buf_ptr, 0, b_desc->size);
+
+ __list_del_entry(&b_desc->link);
+ kfree(b_desc);
+ }
+
+ /* Copy data from the buffer */
+ print_hex_dump_debug("to user ", DUMP_PREFIX_OFFSET, 4, 4,
+ dev_ctx->temp_resp, size_to_copy, false);
+ if (copy_to_user(buf, dev_ctx->temp_resp, size_to_copy)) {
+ dev_err(priv->dev,
+ "%s: Failed to copy to user\n",
+ dev_ctx->miscdev.name);
+ err = -EFAULT;
+ goto exit;
+ }
+
+ err = size_to_copy;
+ kfree(dev_ctx->temp_resp);
+
+ /* free memory allocated on the shared buffers. */
+ dev_ctx->secure_mem.pos = 0;
+ dev_ctx->non_secure_mem.pos = 0;
+
+ dev_ctx->pending_hdr = 0;
+
+exit:
+ /*
+ * Clean the used Shared Memory space,
+ * whether its Input Data copied from user buffers, or
+ * Data received from FW.
+ */
+ while (!list_empty(&dev_ctx->pending_in) ||
+ !list_empty(&dev_ctx->pending_out)) {
+ if (!list_empty(&dev_ctx->pending_in))
+ b_desc = list_first_entry_or_null(&dev_ctx->pending_in,
+ struct se_buf_desc,
+ link);
+ else
+ b_desc = list_first_entry_or_null(&dev_ctx->pending_out,
+ struct se_buf_desc,
+ link);
+
+ if (!b_desc)
+ continue;
+
+ if (b_desc->shared_buf_ptr)
+ memset(b_desc->shared_buf_ptr, 0, b_desc->size);
+
+ __list_del_entry(&b_desc->link);
+ kfree(b_desc);
+ }
+
+ up(&dev_ctx->fops_lock);
+ return err;
+}
+
+/* Give access to EdgeLock Enclave, to the memory we want to share */
+static int se_if_setup_se_mem_access(struct se_if_device_ctx *dev_ctx,
+ u64 addr, u32 len)
+{
+ /* Assuming EdgeLock Enclave has access to all the memory regions */
+ int ret = 0;
+
+ if (ret) {
+ dev_err(dev_ctx->priv->dev,
+ "%s: Fail find memreg\n", dev_ctx->miscdev.name);
+ goto exit;
+ }
+
+ if (ret) {
+ dev_err(dev_ctx->priv->dev,
+ "%s: Fail set permission for resource\n",
+ dev_ctx->miscdev.name);
+ goto exit;
+ }
+
+exit:
+ return ret;
+}
+
+static int se_ioctl_get_mu_info(struct se_if_device_ctx *dev_ctx,
+ u64 arg)
+{
+ struct se_if_priv *priv = dev_get_drvdata(dev_ctx->dev);
+ struct imx_se_node_info *if_node_info;
+ struct se_ioctl_get_if_info info;
+ int err = 0;
+
+ if_node_info = (struct imx_se_node_info *)priv->info;
+
+ info.se_if_id = if_node_info->se_if_id;
+ info.interrupt_idx = 0;
+ info.tz = 0;
+ info.did = if_node_info->se_if_did;
+ info.cmd_tag = if_node_info->cmd_tag;
+ info.rsp_tag = if_node_info->rsp_tag;
+ info.success_tag = if_node_info->success_tag;
+ info.base_api_ver = if_node_info->base_api_ver;
+ info.fw_api_ver = if_node_info->fw_api_ver;
+
+ dev_dbg(priv->dev,
+ "%s: info [se_if_id: %d, irq_idx: %d, tz: 0x%x, did: 0x%x]\n",
+ dev_ctx->miscdev.name,
+ info.se_if_id, info.interrupt_idx, info.tz, info.did);
+
+ if (copy_to_user((u8 *)arg, &info, sizeof(info))) {
+ dev_err(dev_ctx->priv->dev,
+ "%s: Failed to copy mu info to user\n",
+ dev_ctx->miscdev.name);
+ err = -EFAULT;
+ goto exit;
+ }
+
+exit:
+ return err;
+}
+
+/*
+ * Copy a buffer of data to/from the user and return the address to use in
+ * messages
+ */
+static int se_ioctl_setup_iobuf_handler(struct se_if_device_ctx *dev_ctx,
+ u64 arg)
+{
+ struct se_ioctl_setup_iobuf io = {0};
+ struct se_shared_mem *shared_mem;
+ struct se_buf_desc *b_desc;
+ int err = 0;
+ u32 pos;
+
+ if (copy_from_user(&io, (u8 *)arg, sizeof(io))) {
+ dev_err(dev_ctx->priv->dev,
+ "%s: Failed copy iobuf config from user\n",
+ dev_ctx->miscdev.name);
+ err = -EFAULT;
+ goto exit;
+ }
+
+ dev_dbg(dev_ctx->priv->dev,
+ "%s: io [buf: %p(%d) flag: %x]\n",
+ dev_ctx->miscdev.name,
+ io.user_buf, io.length, io.flags);
+
+ if (io.length == 0 || !io.user_buf) {
+ /*
+ * Accept NULL pointers since some buffers are optional
+ * in FW commands. In this case we should return 0 as
+ * pointer to be embedded into the message.
+ * Skip all data copy part of code below.
+ */
+ io.ele_addr = 0;
+ goto copy;
+ }
+
+ /* Select the shared memory to be used for this buffer. */
+ if (io.flags & SE_MU_IO_FLAGS_USE_SEC_MEM) {
+ /* App requires to use secure memory for this buffer.*/
+ dev_err(dev_ctx->priv->dev,
+ "%s: Failed allocate SEC MEM memory\n",
+ dev_ctx->miscdev.name);
+ err = -EFAULT;
+ goto exit;
+ } else {
+ /* No specific requirement for this buffer. */
+ shared_mem = &dev_ctx->non_secure_mem;
+ }
+
+ /* Check there is enough space in the shared memory. */
+ if (shared_mem->size < shared_mem->pos
+ || io.length >= shared_mem->size - shared_mem->pos) {
+ dev_err(dev_ctx->priv->dev,
+ "%s: Not enough space in shared memory\n",
+ dev_ctx->miscdev.name);
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ /* Allocate space in shared memory. 8 bytes aligned. */
+ pos = shared_mem->pos;
+ shared_mem->pos += round_up(io.length, 8u);
+ io.ele_addr = (u64)shared_mem->dma_addr + pos;
+
+ if ((io.flags & SE_MU_IO_FLAGS_USE_SEC_MEM) &&
+ !(io.flags & SE_MU_IO_FLAGS_USE_SHORT_ADDR)) {
+ /*Add base address to get full address.*/
+ dev_err(dev_ctx->priv->dev,
+ "%s: Failed allocate SEC MEM memory\n",
+ dev_ctx->miscdev.name);
+ err = -EFAULT;
+ goto exit;
+ }
+
+ memset(shared_mem->ptr + pos, 0, io.length);
+ if ((io.flags & SE_IO_BUF_FLAGS_IS_INPUT) ||
+ (io.flags & SE_IO_BUF_FLAGS_IS_IN_OUT)) {
+ /*
+ * buffer is input:
+ * copy data from user space to this allocated buffer.
+ */
+ if (copy_from_user(shared_mem->ptr + pos, io.user_buf,
+ io.length)) {
+ dev_err(dev_ctx->priv->dev,
+ "%s: Failed copy data to shared memory\n",
+ dev_ctx->miscdev.name);
+ err = -EFAULT;
+ goto exit;
+ }
+ }
+
+ b_desc = kzalloc(sizeof(*b_desc), GFP_KERNEL);
+ if (!b_desc) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+copy:
+ /* Provide the EdgeLock Enclave address to user space only if success.*/
+ if (copy_to_user((u8 *)arg, &io, sizeof(io))) {
+ dev_err(dev_ctx->priv->dev,
+ "%s: Failed to copy iobuff setup to user\n",
+ dev_ctx->miscdev.name);
+ kfree(b_desc);
+ err = -EFAULT;
+ goto exit;
+ }
+
+ if (b_desc) {
+ b_desc->shared_buf_ptr = shared_mem->ptr + pos;
+ b_desc->usr_buf_ptr = io.user_buf;
+ b_desc->size = io.length;
+
+ if (io.flags & SE_IO_BUF_FLAGS_IS_INPUT) {
+ /*
+ * buffer is input:
+ * add an entry in the "pending input buffers" list so
+ * that copied data can be cleaned from shared memory
+ * later.
+ */
+ list_add_tail(&b_desc->link, &dev_ctx->pending_in);
+ } else {
+ /*
+ * buffer is output:
+ * add an entry in the "pending out buffers" list so data
+ * can be copied to user space when receiving Secure-Enclave
+ * response.
+ */
+ list_add_tail(&b_desc->link, &dev_ctx->pending_out);
+ }
+ }
+
+exit:
+ return err;
+}
+
+/* IOCTL to provide SoC information */
+static int se_ioctl_get_soc_info_handler(struct se_if_device_ctx *dev_ctx,
+ u64 arg)
+{
+ struct imx_se_node_info_list *info_list;
+ struct se_ioctl_get_soc_info soc_info;
+ int err = -EINVAL;
+
+ info_list = (struct imx_se_node_info_list *)
+ device_get_match_data(dev_ctx->priv->dev->parent);
+ if (!info_list)
+ goto exit;
+
+ soc_info.soc_id = info_list->soc_id;
+ soc_info.soc_rev = info_list->soc_rev;
+
+ err = (int)copy_to_user((u8 *)arg, (u8 *)(&soc_info), sizeof(soc_info));
+ if (err) {
+ dev_err(dev_ctx->priv->dev,
+ "%s: Failed to copy soc info to user\n",
+ dev_ctx->miscdev.name);
+ err = -EFAULT;
+ goto exit;
+ }
+
+exit:
+ return err;
+}
+
+/* Open a character device. */
+static int se_if_fops_open(struct inode *nd, struct file *fp)
+{
+ struct se_if_device_ctx *dev_ctx = container_of(fp->private_data,
+ struct se_if_device_ctx,
+ miscdev);
+ int err;
+
+ /* Avoid race if opened at the same time */
+ if (down_trylock(&dev_ctx->fops_lock))
+ return -EBUSY;
+
+ /* Authorize only 1 instance. */
+ if (dev_ctx->status != MU_FREE) {
+ err = -EBUSY;
+ goto exit;
+ }
+
+ /*
+ * Allocate some memory for data exchanges with S40x.
+ * This will be used for data not requiring secure memory.
+ */
+ dev_ctx->non_secure_mem.ptr = dmam_alloc_coherent(dev_ctx->dev,
+ MAX_DATA_SIZE_PER_USER,
+ &dev_ctx->non_secure_mem.dma_addr,
+ GFP_KERNEL);
+ if (!dev_ctx->non_secure_mem.ptr) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ err = se_if_setup_se_mem_access(dev_ctx,
+ dev_ctx->non_secure_mem.dma_addr,
+ MAX_DATA_SIZE_PER_USER);
+ if (err) {
+ err = -EPERM;
+ dev_err(dev_ctx->priv->dev,
+ "%s: Failed to share access to shared memory\n",
+ dev_ctx->miscdev.name);
+ goto free_coherent;
+ }
+
+ dev_ctx->non_secure_mem.size = MAX_DATA_SIZE_PER_USER;
+ dev_ctx->non_secure_mem.pos = 0;
+ dev_ctx->status = MU_OPENED;
+
+ dev_ctx->pending_hdr = 0;
+
+ goto exit;
+
+free_coherent:
+ dmam_free_coherent(dev_ctx->priv->dev, MAX_DATA_SIZE_PER_USER,
+ dev_ctx->non_secure_mem.ptr,
+ dev_ctx->non_secure_mem.dma_addr);
+
+exit:
+ up(&dev_ctx->fops_lock);
+ return err;
+}
+
+/* Close a character device. */
+static int se_if_fops_close(struct inode *nd, struct file *fp)
+{
+ struct se_if_device_ctx *dev_ctx = container_of(fp->private_data,
+ struct se_if_device_ctx,
+ miscdev);
+ struct se_if_priv *priv = dev_ctx->priv;
+ struct se_buf_desc *b_desc;
+
+ /* Avoid race if closed at the same time */
+ if (down_trylock(&dev_ctx->fops_lock))
+ return -EBUSY;
+
+ /* The device context has not been opened */
+ if (dev_ctx->status != MU_OPENED)
+ goto exit;
+
+ /* check if this device was registered as command receiver. */
+ if (priv->cmd_receiver_dev == dev_ctx)
+ priv->cmd_receiver_dev = NULL;
+
+ /* check if this device was registered as waiting response. */
+ if (priv->waiting_rsp_dev == dev_ctx) {
+ priv->waiting_rsp_dev = NULL;
+ mutex_unlock(&priv->se_if_cmd_lock);
+ }
+
+ /* Unmap secure memory shared buffer. */
+ if (dev_ctx->secure_mem.ptr)
+ devm_iounmap(dev_ctx->dev, dev_ctx->secure_mem.ptr);
+
+ dev_ctx->secure_mem.ptr = NULL;
+ dev_ctx->secure_mem.dma_addr = 0;
+ dev_ctx->secure_mem.size = 0;
+ dev_ctx->secure_mem.pos = 0;
+
+ /* Free non-secure shared buffer. */
+ dmam_free_coherent(dev_ctx->priv->dev, MAX_DATA_SIZE_PER_USER,
+ dev_ctx->non_secure_mem.ptr,
+ dev_ctx->non_secure_mem.dma_addr);
+
+ dev_ctx->non_secure_mem.ptr = NULL;
+ dev_ctx->non_secure_mem.dma_addr = 0;
+ dev_ctx->non_secure_mem.size = 0;
+ dev_ctx->non_secure_mem.pos = 0;
+
+ while (!list_empty(&dev_ctx->pending_in) ||
+ !list_empty(&dev_ctx->pending_out)) {
+ if (!list_empty(&dev_ctx->pending_in))
+ b_desc = list_first_entry_or_null(&dev_ctx->pending_in,
+ struct se_buf_desc,
+ link);
+ else
+ b_desc = list_first_entry_or_null(&dev_ctx->pending_out,
+ struct se_buf_desc,
+ link);
+
+ if (!b_desc)
+ continue;
+
+ if (b_desc->shared_buf_ptr)
+ memset(b_desc->shared_buf_ptr, 0, b_desc->size);
+
+ __list_del_entry(&b_desc->link);
+ devm_kfree(dev_ctx->dev, b_desc);
+ }
+
+ dev_ctx->status = MU_FREE;
+
+exit:
+ up(&dev_ctx->fops_lock);
+ return 0;
+}
+
+/* IOCTL entry point of a character device */
+static long se_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
+//static long se_ioctl(struct file *fp, u32 cmd, u64 arg)
+{
+ struct se_if_device_ctx *dev_ctx = container_of(fp->private_data,
+ struct se_if_device_ctx,
+ miscdev);
+ struct se_if_priv *se_if_priv = dev_ctx->priv;
+ int err = -EINVAL;
+
+ /* Prevent race during change of device context */
+ if (down_interruptible(&dev_ctx->fops_lock))
+ return -EBUSY;
+
+ switch (cmd) {
+ case SE_IOCTL_ENABLE_CMD_RCV:
+ if (!se_if_priv->cmd_receiver_dev) {
+ se_if_priv->cmd_receiver_dev = dev_ctx;
+ err = 0;
+ }
+ break;
+ case SE_IOCTL_GET_MU_INFO:
+ err = se_ioctl_get_mu_info(dev_ctx, arg);
+ break;
+ case SE_IOCTL_SETUP_IOBUF:
+ err = se_ioctl_setup_iobuf_handler(dev_ctx, arg);
+ break;
+ case SE_IOCTL_GET_SOC_INFO:
+ err = se_ioctl_get_soc_info_handler(dev_ctx, arg);
+ break;
+
+ default:
+ err = -EINVAL;
+ dev_dbg(se_if_priv->dev,
+ "%s: IOCTL %.8x not supported\n",
+ dev_ctx->miscdev.name,
+ cmd);
+ }
+
+ up(&dev_ctx->fops_lock);
+ return (long)err;
+}
+
+/* Char driver setup */
+static const struct file_operations se_if_fops = {
+ .open = se_if_fops_open,
+ .owner = THIS_MODULE,
+ .release = se_if_fops_close,
+ .unlocked_ioctl = se_ioctl,
+ .read = se_if_fops_read,
+ .write = se_if_fops_write,
+};
+
+/* interface for managed res to free a mailbox channel */
+static void if_mbox_free_channel(void *mbox_chan)
+{
+ mbox_free_channel(mbox_chan);
+}
+
+/* interface for managed res to unregister a character device */
+static void if_misc_deregister(void *miscdevice)
+{
+ misc_deregister(miscdevice);
+}
+
+static int se_if_request_channel(struct device *dev,
+ struct mbox_chan **chan,
+ struct mbox_client *cl,
+ const u8 *name)
+{
+ struct mbox_chan *t_chan;
+ int ret = 0;
+
+ t_chan = mbox_request_channel_byname(cl, name);
+ if (IS_ERR(t_chan)) {
+ ret = PTR_ERR(t_chan);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev,
+ "Failed to request chan %s ret %d\n", name,
+ ret);
+ goto exit;
+ }
+
+ ret = devm_add_action(dev, if_mbox_free_channel, t_chan);
+ if (ret) {
+ dev_err(dev, "failed to add devm removal of mbox %s\n", name);
+ goto exit;
+ }
+
+ *chan = t_chan;
+
+exit:
+ return ret;
+}
+
+static int se_probe_if_cleanup(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct se_if_priv *priv;
+ int ret = 0;
+ int i;
+
+ priv = dev_get_drvdata(dev);
+ if (!priv) {
+ ret = 0;
+ dev_dbg(dev, "SE-MU Priv data is NULL;");
+ return ret;
+ }
+
+ if (priv->tx_chan)
+ mbox_free_channel(priv->tx_chan);
+ if (priv->rx_chan)
+ mbox_free_channel(priv->rx_chan);
+
+ /* free the buffer in se remove, previously allocated
+ * in se probe to store encrypted IMEM
+ */
+ if (priv->imem.buf) {
+ dmam_free_coherent(dev,
+ ELE_IMEM_SIZE,
+ priv->imem.buf,
+ priv->imem.phyaddr);
+ priv->imem.buf = NULL;
+ }
+
+ if (priv->ctxs) {
+ for (i = 0; i < priv->max_dev_ctx; i++) {
+ if (priv->ctxs[i]) {
+ devm_remove_action(dev,
+ if_misc_deregister,
+ &priv->ctxs[i]->miscdev);
+ misc_deregister(&priv->ctxs[i]->miscdev);
+ devm_kfree(dev, priv->ctxs[i]);
+ }
+ }
+ devm_kfree(dev, priv->ctxs);
+ }
+
+ if (priv->flags & RESERVED_DMA_POOL) {
+ of_reserved_mem_device_release(dev);
+ priv->flags &= (~RESERVED_DMA_POOL);
+ }
+
+ devm_kfree(dev, priv);
+ of_node_put(dev->of_node);
+ of_platform_device_destroy(dev, NULL);
+
+ return ret;
+}
+
+static int se_probe_cleanup(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *if_dn;
+
+ /* Enumerate se-interface device nodes. */
+ for_each_child_of_node(dev->of_node, if_dn) {
+ struct platform_device *if_pdev
+ = of_find_device_by_node(if_dn);
+ if (se_probe_if_cleanup(if_pdev))
+ dev_err(dev,
+ "Failed to clean-up child node probe.\n");
+ }
+
+ return 0;
+}
+
+static int init_device_context(struct device *dev)
+{
+ const struct imx_se_node_info *info;
+ struct se_if_device_ctx *dev_ctx;
+ struct se_if_priv *priv;
+ u8 *devname;
+ int ret = 0;
+ int i;
+
+ priv = dev_get_drvdata(dev);
+
+ if (!priv) {
+ ret = -EINVAL;
+ dev_err(dev, "Invalid SE-MU Priv data");
+ return ret;
+ }
+ info = priv->info;
+
+ priv->ctxs = devm_kzalloc(dev, sizeof(dev_ctx) * priv->max_dev_ctx,
+ GFP_KERNEL);
+
+ if (!priv->ctxs) {
+ ret = -ENOMEM;
+ return ret;
+ }
+
+ /* Create users */
+ for (i = 0; i < priv->max_dev_ctx; i++) {
+ dev_ctx = devm_kzalloc(dev, sizeof(*dev_ctx), GFP_KERNEL);
+ if (!dev_ctx) {
+ ret = -ENOMEM;
+ return ret;
+ }
+
+ dev_ctx->dev = dev;
+ dev_ctx->status = MU_FREE;
+ dev_ctx->priv = priv;
+
+ priv->ctxs[i] = dev_ctx;
+
+ /* Default value invalid for an header. */
+ init_waitqueue_head(&dev_ctx->wq);
+
+ INIT_LIST_HEAD(&dev_ctx->pending_out);
+ INIT_LIST_HEAD(&dev_ctx->pending_in);
+ sema_init(&dev_ctx->fops_lock, 1);
+
+ devname = devm_kasprintf(dev, GFP_KERNEL, "%s_ch%d",
+ info->se_name, i);
+ if (!devname) {
+ ret = -ENOMEM;
+ return ret;
+ }
+
+ dev_ctx->miscdev.name = devname;
+ dev_ctx->miscdev.minor = MISC_DYNAMIC_MINOR;
+ dev_ctx->miscdev.fops = &se_if_fops;
+ dev_ctx->miscdev.parent = dev;
+ ret = misc_register(&dev_ctx->miscdev);
+ if (ret) {
+ dev_err(dev, "failed to register misc device %d\n",
+ ret);
+ return ret;
+ }
+
+ ret = devm_add_action(dev, if_misc_deregister,
+ &dev_ctx->miscdev);
+ if (ret) {
+ dev_err(dev,
+ "failed[%d] to add action to the misc-dev\n",
+ ret);
+ return ret;
+ }
+ }
+
+ return ret;
+}
+
+static void se_load_firmware(const struct firmware *fw, void *context)
+{
+ struct se_if_priv *priv = (struct se_if_priv *) context;
+ const struct imx_se_node_info *info = priv->info;
+ const u8 *se_fw_name = info->fw_name_in_rfs;
+ phys_addr_t se_fw_phyaddr;
+ u8 *se_fw_buf;
+
+ if (!fw) {
+ if (priv->fw_fail > MAX_FW_LOAD_RETRIES)
+ dev_dbg(priv->dev,
+ "External FW not found, using ROM FW.\n");
+ else {
+ /*add a bit delay to wait for firmware priv released */
+ msleep(20);
+
+ /* Load firmware one more time if timeout */
+ request_firmware_nowait(THIS_MODULE,
+ FW_ACTION_UEVENT, info->fw_name_in_rfs,
+ priv->dev, GFP_KERNEL, priv,
+ se_load_firmware);
+ priv->fw_fail++;
+ dev_dbg(priv->dev, "Value of retries = 0x%x.\n",
+ priv->fw_fail);
+ }
+
+ return;
+ }
+
+ /* allocate buffer to store the SE FW */
+ se_fw_buf = dmam_alloc_coherent(priv->dev, fw->size,
+ &se_fw_phyaddr,
+ GFP_KERNEL);
+ if (!se_fw_buf) {
+ dev_err(priv->dev, "Failed to alloc SE fw buffer memory\n");
+ goto exit;
+ }
+
+ memcpy(se_fw_buf, fw->data, fw->size);
+
+ if (ele_fw_authenticate(priv->dev, se_fw_phyaddr))
+ dev_err(priv->dev,
+ "Failed to authenticate & load SE firmware %s.\n",
+ se_fw_name);
+
+exit:
+ dmam_free_coherent(priv->dev,
+ fw->size,
+ se_fw_buf,
+ se_fw_phyaddr);
+
+ release_firmware(fw);
+}
+
+static int se_if_probe(struct platform_device *pdev)
+{
+ struct imx_se_node_info_list *info_list;
+ struct device *dev = &pdev->dev;
+ struct imx_se_node_info *info;
+ struct se_if_priv *priv;
+ u32 idx;
+ int ret;
+
+ if (of_property_read_u32(dev->of_node, "reg", &idx)) {
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ info_list = (struct imx_se_node_info_list *)
+ device_get_match_data(dev->parent);
+ info = get_imx_se_node_info(info_list, idx);
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ ret = -ENOMEM;
+ goto exit;
+ }
+
+ dev_set_drvdata(dev, priv);
+
+ /* Mailbox client configuration */
+ priv->se_mb_cl.dev = dev;
+ priv->se_mb_cl.tx_block = false;
+ priv->se_mb_cl.knows_txdone = true;
+ priv->se_mb_cl.rx_callback = se_if_rx_callback;
+
+ ret = se_if_request_channel(dev, &priv->tx_chan,
+ &priv->se_mb_cl, info->mbox_tx_name);
+ if (ret) {
+ if (ret == -EPROBE_DEFER)
+ dev_err(dev, "Mailbox tx channel, is not ready.\n");
+ else
+ dev_err(dev, "Failed to request tx channel\n");
+
+ goto exit;
+ }
+
+ ret = se_if_request_channel(dev, &priv->rx_chan,
+ &priv->se_mb_cl, info->mbox_rx_name);
+ if (ret) {
+ if (ret == -EPROBE_DEFER)
+ dev_err(dev, "Mailbox rx channel, is not ready.\n");
+ else
+ dev_dbg(dev, "Failed to request rx channel\n");
+
+ goto exit;
+ }
+
+ priv->dev = dev;
+ priv->info = info;
+
+ /* Initialize the mutex. */
+ mutex_init(&priv->se_if_lock);
+ mutex_init(&priv->se_if_cmd_lock);
+
+ priv->cmd_receiver_dev = NULL;
+ priv->waiting_rsp_dev = NULL;
+ priv->max_dev_ctx = info->max_dev_ctx;
+ priv->cmd_tag = info->cmd_tag;
+ priv->rsp_tag = info->rsp_tag;
+ priv->mem_pool_name = info->pool_name;
+ priv->success_tag = info->success_tag;
+ priv->base_api_ver = info->base_api_ver;
+ priv->fw_api_ver = info->fw_api_ver;
+
+ init_completion(&priv->done);
+ spin_lock_init(&priv->lock);
+
+ if (info->reserved_dma_ranges) {
+ ret = of_reserved_mem_device_init(dev);
+ if (ret) {
+ dev_err(dev,
+ "failed to init reserved memory region %d\n",
+ ret);
+ priv->flags &= (~RESERVED_DMA_POOL);
+ goto exit;
+ }
+ priv->flags |= RESERVED_DMA_POOL;
+ }
+
+ if (info->fw_name_in_rfs) {
+ ret = request_firmware_nowait(THIS_MODULE,
+ FW_ACTION_UEVENT,
+ info->fw_name_in_rfs,
+ dev, GFP_KERNEL, priv,
+ se_load_firmware);
+ if (ret)
+ dev_warn(dev, "Failed to get firmware [%s].\n",
+ info->fw_name_in_rfs);
+ }
+
+ ret = imx_fetch_soc_info(dev);
+ if (ret) {
+ dev_err(dev,
+ "failed[%d] to fetch SoC Info\n", ret);
+ goto exit;
+ }
+
+ if (info->imem_mgmt) {
+ /* allocate buffer where SE store encrypted IMEM */
+ priv->imem.buf = dmam_alloc_coherent(dev, ELE_IMEM_SIZE,
+ &priv->imem.phyaddr,
+ GFP_KERNEL);
+ if (!priv->imem.buf) {
+ dev_err(dev,
+ "dmam-alloc-failed: To store encr-IMEM.\n");
+ ret = -ENOMEM;
+ goto exit;
+ }
+ }
+
+ if (info->max_dev_ctx) {
+ ret = init_device_context(dev);
+ if (ret) {
+ dev_err(dev,
+ "Failed[0x%x] to create device contexts.\n",
+ ret);
+ goto exit;
+ }
+ }
+
+ dev_info(dev, "i.MX secure-enclave: %s interface to firmware, configured.\n",
+ info->se_name);
+ return devm_of_platform_populate(dev);
+
+exit:
+ /* if execution control reaches here, if probe fails.
+ * hence doing the cleanup
+ */
+ if (se_probe_if_cleanup(pdev))
+ dev_err(dev,
+ "Failed to clean-up the child node probe.\n");
+
+ return ret;
+}
+
+static int se_probe(struct platform_device *pdev)
+{
+ struct device_node *enum_dev_node;
+ struct device *dev = &pdev->dev;
+ int enum_count;
+ int ret;
+
+ enum_count = of_get_child_count(dev->of_node);
+ if (!enum_count) {
+ ret = -EINVAL;
+ dev_err(dev, "Zero Tx/Rx path MU nodes.\n");
+ return ret;
+ }
+
+ for_each_child_of_node(dev->of_node, enum_dev_node) {
+ struct platform_device *enum_plat_dev __maybe_unused;
+
+ if (!of_device_is_available(enum_dev_node))
+ continue;
+
+ enum_plat_dev = of_platform_device_create(enum_dev_node,
+ NULL,
+ dev);
+ if (!enum_plat_dev) {
+ ret = -EINVAL;
+ of_node_put(enum_dev_node);
+ dev_err(dev,
+ "Failed to create enumerated platform device.");
+ break;
+ }
+
+ ret = se_if_probe(enum_plat_dev);
+ }
+ return ret;
+}
+
+static int se_remove(struct platform_device *pdev)
+{
+ if (se_probe_cleanup(pdev))
+ dev_err(&pdev->dev,
+ "i.MX Secure Enclave is not cleanly un-probed.");
+
+ return 0;
+}
+
+static int se_suspend(struct device *dev)
+{
+ struct se_if_priv *priv = dev_get_drvdata(dev);
+ const struct imx_se_node_info *info
+ = priv->info;
+
+ if (info && info->imem_mgmt)
+ priv->imem.size = se_save_imem_state(dev);
+
+ return 0;
+}
+
+static int se_resume(struct device *dev)
+{
+ struct se_if_priv *priv = dev_get_drvdata(dev);
+ const struct imx_se_node_info *info
+ = priv->info;
+ int i;
+
+ for (i = 0; i < priv->max_dev_ctx; i++)
+ wake_up_interruptible(&priv->ctxs[i]->wq);
+
+ if (info && info->imem_mgmt)
+ se_restore_imem_state(dev);
+
+ return 0;
+}
+
+static const struct dev_pm_ops se_pm = {
+ RUNTIME_PM_OPS(se_suspend, se_resume, NULL)
+};
+
+static struct platform_driver se_driver = {
+ .driver = {
+ .name = "fsl-se-fw",
+ .of_match_table = se_match,
+ .pm = &se_pm,
+ },
+ .probe = se_probe,
+ .remove = se_remove,
+};
+MODULE_DEVICE_TABLE(of, se_match);
+
+module_platform_driver(se_driver);
+
+MODULE_AUTHOR("Pankaj Gupta <pankaj.gupta@xxxxxxx>");
+MODULE_DESCRIPTION("iMX Secure Enclave Driver.");
+MODULE_LICENSE("GPL");
diff --git a/drivers/firmware/imx/se_ctrl.h b/drivers/firmware/imx/se_ctrl.h
new file mode 100644
index 000000000000..76e1ce77c52f
--- /dev/null
+++ b/drivers/firmware/imx/se_ctrl.h
@@ -0,0 +1,151 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2024 NXP
+ */
+
+#ifndef SE_MU_H
+#define SE_MU_H
+
+#include <linux/miscdevice.h>
+#include <linux/semaphore.h>
+#include <linux/mailbox_client.h>
+
+#define MAX_FW_LOAD_RETRIES 50
+
+#define MSG_TAG(x) (((x) & 0xff000000) >> 24)
+#define MSG_COMMAND(x) (((x) & 0x00ff0000) >> 16)
+#define MSG_SIZE(x) (((x) & 0x0000ff00) >> 8)
+#define MSG_VER(x) ((x) & 0x000000ff)
+#define RES_STATUS(x) ((x) & 0x000000ff)
+#define MAX_DATA_SIZE_PER_USER (65 * 1024)
+#define S4_DEFAULT_MUAP_INDEX (2)
+#define S4_MUAP_DEFAULT_MAX_USERS (4)
+#define MESSAGING_VERSION_6 0x6
+#define MESSAGING_VERSION_7 0x7
+
+#define DEFAULT_MESSAGING_TAG_COMMAND (0x17u)
+#define DEFAULT_MESSAGING_TAG_RESPONSE (0xe1u)
+
+#define SE_MU_IO_FLAGS_USE_SEC_MEM (0x02u)
+#define SE_MU_IO_FLAGS_USE_SHORT_ADDR (0x04u)
+
+struct se_imem_buf {
+ u8 *buf;
+ phys_addr_t phyaddr;
+ u32 size;
+};
+
+struct se_buf_desc {
+ u8 *shared_buf_ptr;
+ u8 *usr_buf_ptr;
+ u32 size;
+ struct list_head link;
+};
+
+/* Status of a char device */
+enum se_if_dev_ctx_status_t {
+ MU_FREE,
+ MU_OPENED
+};
+
+struct se_shared_mem {
+ dma_addr_t dma_addr;
+ u32 size;
+ u32 pos;
+ u8 *ptr;
+};
+
+/* Private struct for each char device instance. */
+struct se_if_device_ctx {
+ struct device *dev;
+ struct se_if_priv *priv;
+ struct miscdevice miscdev;
+
+ enum se_if_dev_ctx_status_t status;
+ wait_queue_head_t wq;
+ struct semaphore fops_lock;
+
+ u32 pending_hdr;
+ struct list_head pending_in;
+ struct list_head pending_out;
+
+ struct se_shared_mem secure_mem;
+ struct se_shared_mem non_secure_mem;
+
+ u32 *temp_resp;
+ u32 temp_resp_size;
+ struct notifier_block se_notify;
+};
+
+/* Header of the messages exchange with the EdgeLock Enclave */
+struct se_msg_hdr {
+ u8 ver;
+ u8 size;
+ u8 command;
+ u8 tag;
+} __packed;
+
+#define SE_MU_HDR_SZ 4
+#define TAG_OFFSET (SE_MU_HDR_SZ - 1)
+#define CMD_OFFSET (SE_MU_HDR_SZ - 2)
+#define SZ_OFFSET (SE_MU_HDR_SZ - 3)
+#define VER_OFFSET (SE_MU_HDR_SZ - 4)
+
+struct se_api_msg {
+ u32 header; /* u8 Tag; u8 Command; u8 Size; u8 Ver; */
+ u32 *data;
+};
+
+struct se_if_priv {
+ struct se_if_device_ctx *cmd_receiver_dev;
+ struct se_if_device_ctx *waiting_rsp_dev;
+ bool no_dev_ctx_used;
+ /*
+ * prevent parallel access to the se interface registers
+ * e.g. a user trying to send a command while the other one is
+ * sending a response.
+ */
+ struct mutex se_if_lock;
+ /*
+ * prevent a command to be sent on the se interface while another one is
+ * still processing. (response to a command is allowed)
+ */
+ struct mutex se_if_cmd_lock;
+ struct device *dev;
+ u8 *mem_pool_name;
+ u8 cmd_tag;
+ u8 rsp_tag;
+ u8 success_tag;
+ u8 base_api_ver;
+ u8 fw_api_ver;
+ u32 fw_fail;
+ const void *info;
+
+ struct mbox_client se_mb_cl;
+ struct mbox_chan *tx_chan, *rx_chan;
+ struct se_api_msg *rx_msg;
+ struct completion done;
+ spinlock_t lock;
+ /*
+ * Flag to retain the state of initialization done at
+ * the time of se-mu probe.
+ */
+ uint32_t flags;
+ u8 max_dev_ctx;
+ struct se_if_device_ctx **ctxs;
+ struct se_imem_buf imem;
+};
+
+void *get_phy_buf_mem_pool(struct device *dev,
+ u8 *mem_pool_name,
+ dma_addr_t *buf,
+ u32 size);
+phys_addr_t get_phy_buf_mem_pool1(struct device *dev,
+ u8 *mem_pool_name,
+ u32 **buf,
+ u32 size);
+void free_phybuf_mem_pool(struct device *dev,
+ u8 *mem_pool_name,
+ u32 *buf,
+ u32 size);
+#endif
diff --git a/include/linux/firmware/imx/se_api.h b/include/linux/firmware/imx/se_api.h
new file mode 100644
index 000000000000..c47f84906837
--- /dev/null
+++ b/include/linux/firmware/imx/se_api.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2024 NXP
+ */
+
+#ifndef __SE_API_H__
+#define __SE_API_H__
+
+#include <linux/types.h>
+
+#define SOC_ID_OF_IMX8ULP 0x084D
+#define SOC_ID_OF_IMX93 0x9300
+
+#endif /* __SE_API_H__ */
diff --git a/include/uapi/linux/se_ioctl.h b/include/uapi/linux/se_ioctl.h
new file mode 100644
index 000000000000..f68a36e9da2c
--- /dev/null
+++ b/include/uapi/linux/se_ioctl.h
@@ -0,0 +1,88 @@
+/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause*/
+/*
+ * Copyright 2024 NXP
+ */
+
+#ifndef SE_IOCTL_H
+#define SE_IOCTL_H
+
+/* IOCTL definitions. */
+
+struct se_ioctl_setup_iobuf {
+ u8 *user_buf;
+ u32 length;
+ u32 flags;
+ u64 ele_addr;
+};
+
+struct se_ioctl_shared_mem_cfg {
+ u32 base_offset;
+ u32 size;
+};
+
+struct se_ioctl_get_if_info {
+ u8 se_if_id;
+ u8 interrupt_idx;
+ u8 tz;
+ u8 did;
+ u8 cmd_tag;
+ u8 rsp_tag;
+ u8 success_tag;
+ u8 base_api_ver;
+ u8 fw_api_ver;
+};
+
+struct se_ioctl_signed_message {
+ u8 *message;
+ u32 msg_size;
+ u32 error_code;
+};
+
+struct se_ioctl_get_soc_info {
+ u16 soc_id;
+ u16 soc_rev;
+};
+
+/* IO Buffer Flags */
+#define SE_IO_BUF_FLAGS_IS_OUTPUT (0x00u)
+#define SE_IO_BUF_FLAGS_IS_INPUT (0x01u)
+#define SE_IO_BUF_FLAGS_USE_SEC_MEM (0x02u)
+#define SE_IO_BUF_FLAGS_USE_SHORT_ADDR (0x04u)
+#define SE_IO_BUF_FLAGS_IS_IN_OUT (0x10u)
+
+/* IOCTLS */
+#define SE_IOCTL 0x0A /* like MISC_MAJOR. */
+
+/*
+ * ioctl to designated the current fd as logical-reciever.
+ * This is ioctl is send when the nvm-daemon, a slave to the
+ * firmware is started by the user.
+ */
+#define SE_IOCTL_ENABLE_CMD_RCV _IO(SE_IOCTL, 0x01)
+
+/*
+ * ioctl to get the buffer allocated from the memory, which is shared
+ * between kernel and FW.
+ * Post allocation, the kernel tagged the allocated memory with:
+ * Output
+ * Input
+ * Input-Output
+ * Short address
+ * Secure-memory
+ */
+#define SE_IOCTL_SETUP_IOBUF _IOWR(SE_IOCTL, 0x03, \
+ struct se_ioctl_setup_iobuf)
+
+/*
+ * ioctl to get the mu information, that is used to exchange message
+ * with FW, from user-spaced.
+ */
+#define SE_IOCTL_GET_MU_INFO _IOR(SE_IOCTL, 0x04, \
+ struct se_ioctl_get_if_info)
+/*
+ * ioctl to get SoC Info from user-space.
+ */
+#define SE_IOCTL_GET_SOC_INFO _IOR(SE_IOCTL, 0x06, \
+ struct se_ioctl_get_soc_info)
+
+#endif
--
2.34.1
