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src_Testbench/SoC/External_Control.bsv

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+// Copyright (c) 2016-2019 Bluespec, Inc. All Rights Reserved
+
+package External_Control;
+
+// ================================================================
+// This package defines control request and response types from an
+// external agent (usually GDB) to the SoC.
+
+// ================================================================
+// BSV library imports
+
+// None
+
+// ================================================================
+// External control requests
+
+typedef struct {
+   Bit #(8)     op;
+   Bit #(64)    arg1;
+   Bit #(64)    arg2;
+   } Control_Req
+   deriving (Bits, FShow);
+
+// ----------------
+// Reads and writes to the Debug Module
+
+Bit #(8) external_control_req_op_read_control_fabric  = 10;    // arg1: fabric_addr
+Bit #(8) external_control_req_op_write_control_fabric = 11;    // arg1: fabric_addr, arg2: data
+
+// ================================================================
+// External control responses
+
+typedef struct {
+   Bit #(8)     status;
+   Bit #(64)    result;
+   } Control_Rsp
+   deriving (Bits, FShow);
+
+Bit #(8) external_control_rsp_status_ok  = 0;
+Bit #(8) external_control_rsp_status_err = 1;
+
+// ================================================================
+
+endpackage