1 files changed, 82 insertions, 0 deletions
diff --git a/plat/ti/k3/common/drivers/sec_proxy/sec_proxy.h b/plat/ti/k3/common/drivers/sec_proxy/sec_proxy.h
new file mode 100644
index 0000000..f4b0b4b
--- /dev/null
+++ b/plat/ti/k3/common/drivers/sec_proxy/sec_proxy.h
@@ -0,0 +1,82 @@
+/*
+ * 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 SEC_PROXY_H
+#define 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}()
+ * There are two schemes we use:
+ * * if K3_SEC_PROXY_LITE = 1, we just have two threads to talk
+ * * if K3_SEC_PROXY_LITE = 0, we have the full fledged
+ *   communication scheme available.
+ */
+enum k3_sec_proxy_chan_id {
+#if !K3_SEC_PROXY_LITE
+	SP_NOTIFY = 0,
+	SP_RESPONSE,
+	SP_HIGH_PRIORITY,
+	SP_LOW_PRIORITY,
+	SP_NOTIFY_RESP,
+#else
+	SP_RESPONSE = 8,
+	/*
+	 * Note: TISCI documentation indicates "low priority", but in reality
+	 * with a single thread, there is no low or high priority.. This usage
+	 * is more appropriate for TF-A since we can reduce the churn as a
+	 * result.
+	 */
+	SP_HIGH_PRIORITY,
+#endif /* K3_SEC_PROXY_LITE */
+};
+
+/**
+ * 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_clear_rx_thread(enum k3_sec_proxy_chan_id id);
+
+/**
+ * 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 /* SEC_PROXY_H */