68d3bd484e
When DEBUG_WEDGE is defined, expose the last committed and next in the reorder buffer PC and corresponding instruction via DMI registers, since even when the core is wedged and we can't read GPRs etc we can still interact with the debug module itself. Hopefully this proves useful for debugging wedges.
148 lines
4.4 KiB
Plaintext
148 lines
4.4 KiB
Plaintext
// Copyright (c) 2016-2020 Bluespec, Inc. All Rights Reserved
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//
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//-
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// RVFI_DII + CHERI modifications:
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// Copyright (c) 2020 Alexandre Joannou
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// Copyright (c) 2020 Peter Rugg
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// Copyright (c) 2020 Jonathan Woodruff
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// All rights reserved.
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//
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// This software was developed by SRI International and the University of
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// Cambridge Computer Laboratory (Department of Computer Science and
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// Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
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// DARPA SSITH research programme.
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//
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// This work was supported by NCSC programme grant 4212611/RFA 15971 ("SafeBet").
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//-
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package Proc_IFC;
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// ================================================================
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// BSV library imports
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import Vector :: *;
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import GetPut :: *;
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import ClientServer :: *;
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// ================================================================
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// Project imports
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import ISA_Decls :: *;
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import AXI4 :: *;
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import Fabric_Defs :: *;
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import SoC_Map :: *;
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`ifdef INCLUDE_GDB_CONTROL
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import DM_CPU_Req_Rsp :: *;
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`endif
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`ifdef INCLUDE_TANDEM_VERIF
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import ProcTypes :: *;
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import Trace_Data2 :: *;
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`endif
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`ifdef RVFI_DII
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import Types :: *;
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`endif
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`ifdef DEBUG_WEDGE
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import CHERICap :: *;
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import CHERICC_Fat :: *;
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`endif
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// ================================================================
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// CPU interface
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// Note: this Proc_IFC is similar, but not identical to CPU_IFC for Piccolo and Flute
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// Specifically, it removes interfaces for software and timer,
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// because the RISCY-OOO mkProc contains those elements.
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interface Proc_IFC;
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// ----------------
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// Start the cores running
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// Use toHostAddr = 0 if not monitoring tohost
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method Action start (Bool running, Addr startpc, Addr tohostAddr, Addr fromhostAddr);
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// ----------------
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// SoC fabric connections
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// Fabric master interface for memory (from LLC)
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interface AXI4_Master_Synth #(Wd_MId, Wd_Addr, Wd_Data,
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Wd_AW_User, Wd_W_User, Wd_B_User,
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Wd_AR_User, Wd_R_User) master0;
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// Fabric master interface for IO (from MMIOPlatform)
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interface AXI4_Master #(Wd_MId_2x3, Wd_Addr, Wd_Data,
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Wd_AW_User, Wd_W_User, Wd_B_User,
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Wd_AR_User, Wd_R_User) master1;
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// ----------------
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// External interrupts
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(* always_ready, always_enabled *)
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method Action m_external_interrupt_req (Bool set_not_clear);
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(* always_ready, always_enabled *)
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method Action s_external_interrupt_req (Bool set_not_clear);
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// ----------------
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// Non-maskable interrupt
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(* always_ready, always_enabled *)
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method Action non_maskable_interrupt_req (Bool set_not_clear);
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// ----------------
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// Set core's verbosity
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method Action set_verbosity (Bit #(4) verbosity);
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// ----------------
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// Coherent port into LLC (used by Debug Module, DMA engines, ... to read/write memory)
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interface AXI4_Slave_Synth #(Wd_SId_2x3, Wd_Addr, Wd_Data,
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Wd_AW_User, Wd_W_User, Wd_B_User,
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Wd_AR_User, Wd_R_User) debug_module_mem_server;
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`ifdef RVFI_DII
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interface Toooba_RVFI_DII_Server rvfi_dii_server;
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`endif
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// ----------------
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// Optional interface to Debug Module
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`ifdef INCLUDE_GDB_CONTROL
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interface Server #(Bool, Bool) hart0_run_halt_server;
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interface Server #(DM_CPU_Req #(5, XLEN), DM_CPU_Rsp #(XLEN)) hart0_gpr_mem_server;
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`ifdef ISA_F
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interface Server #(DM_CPU_Req #(5, FLEN), DM_CPU_Rsp #(FLEN)) hart0_fpr_mem_server;
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`endif
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interface Server #(DM_CPU_Req #(12, XLEN), DM_CPU_Rsp #(XLEN)) hart0_csr_mem_server;
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// Non-standard
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interface Put #(Bit #(4)) hart0_put_other_req;
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`endif
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`ifdef INCLUDE_TANDEM_VERIF
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// Note: this is a SupSize vector of streams of Trace_Data2 structs,
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// each of which has a serialnum field. Each of the SupSize
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// streams has serialnums in increasing order. Each serialnum
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// appears exactly once in exactly one of the streams. Thus, the
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// channels can easily be merged into a single program-order stream.
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interface Vector #(SupSize, Get #(Trace_Data2)) v_to_TV;
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`endif
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`ifdef DEBUG_WEDGE
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(* always_enabled *)
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method Tuple2#(CapMem, Bit#(32)) hart0_last_inst;
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(* always_enabled *)
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method Tuple2#(CapMem, Bit#(32)) hart0_next_inst;
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`endif
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endinterface
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// ================================================================
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endpackage
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