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Merge branch 'main' of github.com:ross144/cvw

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This commit is contained in:
Ross Thompson 2023-07-07 13:25:00 -05:00
commit da499aafc0
34 changed files with 706 additions and 261 deletions
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52
.gitignore vendored
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@ -119,3 +119,55 @@ tests/coverage/*.elf
sim/*Cache.log sim/*Cache.log
sim/branch sim/branch
tests/fp/combined_IF_vectors/IF_vectors/*.tv tests/fp/combined_IF_vectors/IF_vectors/*.tv
/sim/branch-march14.tar.gz
/sim/gshareforward-no-class
/sim/lint-wally_32
/sim/lint-wally_32e
/sim/local16.txt
/sim/localhistory_m6k10_results_april24.txt
/sim/log.log
/sim/obj_dir/Vtestbench.cpp
/sim/obj_dir/Vtestbench.h
/sim/obj_dir/Vtestbench.mk
/sim/obj_dir/Vtestbench__ConstPool_0.cpp
/sim/obj_dir/Vtestbench__Syms.cpp
/sim/obj_dir/Vtestbench__Syms.h
/sim/obj_dir/Vtestbench___024root.h
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__0.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__0__Slow.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__1.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__10.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__11.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__1__Slow.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__2.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__2__Slow.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__3.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__3__Slow.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__4.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__4__Slow.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__5.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__5__Slow.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__6.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__7.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__8.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hed41eec4__9.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hfc24d085__0.cpp
/sim/obj_dir/Vtestbench___024root__DepSet_hfc24d085__0__Slow.cpp
/sim/obj_dir/Vtestbench___024root__Slow.cpp
/sim/obj_dir/Vtestbench___024unit.h
/sim/obj_dir/Vtestbench___024unit__DepSet_hf87c9ffd__0__Slow.cpp
/sim/obj_dir/Vtestbench___024unit__Slow.cpp
/sim/obj_dir/Vtestbench__verFiles.dat
/sim/obj_dir/Vtestbench_classes.mk
/sim/obj_dir/Vtestbench_tlbcam__Pz1_T20_K34_S9.h
/sim/obj_dir/Vtestbench_tlbcam__Pz1_T20_K34_S9__DepSet_h34d4af8f__0.cpp
/sim/obj_dir/Vtestbench_tlbcam__Pz1_T20_K34_S9__DepSet_h34d4af8f__0__Slow.cpp
/sim/obj_dir/Vtestbench_tlbcam__Pz1_T20_K34_S9__DepSet_h845a114e__0.cpp
/sim/obj_dir/Vtestbench_tlbcam__Pz1_T20_K34_S9__DepSet_h845a114e__0__Slow.cpp
/sim/obj_dir/Vtestbench_tlbcam__Pz1_T20_K34_S9__DepSet_h845a114e__1.cpp
/sim/obj_dir/Vtestbench_tlbcam__Pz1_T20_K34_S9__Slow.cpp
/sim/obj_dir/Vtestbench_tlbram__Pz1_T20.h
/sim/obj_dir/Vtestbench_tlbram__Pz1_T20__DepSet_h3df7cb71__0.cpp
/sim/obj_dir/Vtestbench_tlbram__Pz1_T20__DepSet_hab70f5b0__0.cpp
/sim/obj_dir/Vtestbench_tlbram__Pz1_T20__DepSet_hab70f5b0__0__Slow.cpp
/sim/obj_dir/Vtestbench_tlbram__Pz1_T20__Slow.cpp

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config/fpga/config.vh Normal file
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//////////////////////////////////////////
// wally-config.vh
//
// Written: David_Harris@hmc.edu 4 January 2021
// Modified:
//
// Purpose: Specify which features are configured
// Macros to determine which modes are supported based on MISA
//
// A component of the Wally configurable RISC-V project.
//
// Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
//
// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
//
// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file
// except in compliance with the License, or, at your option, the Apache License version 2.0. You
// may obtain a copy of the License at
//
// https://solderpad.org/licenses/SHL-2.1/
//
// Unless required by applicable law or agreed to in writing, any work distributed under the
// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
// either express or implied. See the License for the specific language governing permissions
// and limitations under the License.
////////////////////////////////////////////////////////////////////////////////////////////////
// include shared configuration
`include "BranchPredictorType.vh"
localparam FPGA = 1;
localparam QEMU = 0;
// RV32 or RV64: XLEN = 32 or 64
localparam XLEN = 32'd64;
// IEEE 754 compliance
localparam IEEE754 = 0;
// MISA RISC-V configuration per specification
localparam MISA = (32'h00000104 | 1 << 5 | 1 << 3 | 1 << 18 | 1 << 20 | 1 << 12 | 1 << 0);
localparam ZICSR_SUPPORTED = 1;
localparam ZIFENCEI_SUPPORTED = 1;
localparam COUNTERS = 12'd32;
localparam ZICNTR_SUPPORTED = 1;
localparam ZIHPM_SUPPORTED = 1;
localparam ZFH_SUPPORTED = 0;
localparam SSTC_SUPPORTED = 0;
localparam ZICBOM_SUPPORTED = 0;
localparam ZICBOZ_SUPPORTED = 0;
localparam ZICBOP_SUPPORTED = 0;
localparam SVPBMT_SUPPORTED = 0;
// LSU microarchitectural Features
localparam BUS_SUPPORTED = 1;
localparam DCACHE_SUPPORTED = 1;
localparam ICACHE_SUPPORTED = 1;
localparam VIRTMEM_SUPPORTED = 1;
localparam VECTORED_INTERRUPTS_SUPPORTED = 1;
localparam BIGENDIAN_SUPPORTED = 1;
// TLB configuration. Entries should be a power of 2
localparam ITLB_ENTRIES = 32'd32;
localparam DTLB_ENTRIES = 32'd32;
// Cache configuration. Sizes should be a power of two
// typical configuration 4 ways, 4096 bytes per way, 256 bit or more lines
localparam DCACHE_NUMWAYS = 32'd4;
localparam DCACHE_WAYSIZEINBYTES = 32'd4096;
localparam DCACHE_LINELENINBITS = 32'd512;
localparam ICACHE_NUMWAYS = 32'd4;
localparam ICACHE_WAYSIZEINBYTES = 32'd4096;
localparam ICACHE_LINELENINBITS = 32'd512;
// Integer Divider Configuration
// IDIV_BITSPERCYCLE must be 1, 2, or 4
localparam IDIV_BITSPERCYCLE = 32'd4;
localparam IDIV_ON_FPU = 1;
// Legal number of PMP entries are 0, 16, or 64
localparam PMP_ENTRIES = 32'd16;
// Address space
localparam logic [63:0] RESET_VECTOR = 64'h0000000000001000;
// Bus Interface width
localparam AHBW = 32'd64;
// WFI Timeout Wait
localparam WFI_TIMEOUT_BIT = 32'd16;
// Peripheral Physical Addresses
// Peripheral memory space extends from BASE to BASE+RANGE
// Range should be a thermometer code with 0's in the upper bits and 1s in the lower bits
// *** each of these is `PA_BITS wide. is this paramaterizable INSIDE the config file?
localparam DTIM_SUPPORTED = 1'b0;
localparam logic [63:0] DTIM_BASE = 64'h80000000;
localparam logic [63:0] DTIM_RANGE = 64'h00001FFF;
localparam IROM_SUPPORTED = 1'b0;
localparam logic [63:0] IROM_BASE = 64'h80000000;
localparam logic [63:0] IROM_RANGE = 64'h00001FFF;
localparam BOOTROM_SUPPORTED = 1'b1;
localparam logic [63:0] BOOTROM_BASE = 64'h00001000;
localparam logic [63:0] BOOTROM_RANGE = 64'h00000FFF;
localparam UNCORE_RAM_SUPPORTED = 1'b0;
localparam logic [63:0] UNCORE_RAM_BASE = 64'h80000000;
localparam logic [63:0] UNCORE_RAM_RANGE = 64'h7FFFFFFF;
localparam EXT_MEM_SUPPORTED = 1'b1;
localparam logic [63:0] EXT_MEM_BASE = 64'h80000000;
localparam logic [63:0] EXT_MEM_RANGE = 64'h07FFFFFF;
localparam CLINT_SUPPORTED = 1'b1;
localparam logic [63:0] CLINT_BASE = 64'h02000000;
localparam logic [63:0] CLINT_RANGE = 64'h0000FFFF;
localparam GPIO_SUPPORTED = 1'b1;
localparam logic [63:0] GPIO_BASE = 64'h10060000;
localparam logic [63:0] GPIO_RANGE = 64'h000000FF;
localparam UART_SUPPORTED = 1'b1;
localparam logic [63:0] UART_BASE = 64'h10000000;
localparam logic [63:0] UART_RANGE = 64'h00000007;
localparam PLIC_SUPPORTED = 1'b1;
localparam logic [63:0] PLIC_BASE = 64'h0C000000;
localparam logic [63:0] PLIC_RANGE = 64'h03FFFFFF;
localparam SDC_SUPPORTED = 1'b1;
localparam logic [63:0] SDC_BASE = 64'h00012100;
localparam logic [63:0] SDC_RANGE = 64'h0000001F;
// Test modes
// Tie GPIO outputs back to inputs
localparam GPIO_LOOPBACK_TEST = 0;
// Hardware configuration
localparam UART_PRESCALE = 32'd0;
// Interrupt configuration
localparam PLIC_NUM_SRC = 32'd53;
// comment out the following if >=32 sources
localparam PLIC_NUM_SRC_LT_32 = (PLIC_NUM_SRC < 32);
localparam PLIC_GPIO_ID = 32'd3;
localparam PLIC_UART_ID = 32'd10;
localparam BPRED_SUPPORTED = 1;
localparam BranchPredictorType BPRED_TYPE = BP_GSHARE; // BP_GSHARE_BASIC, BP_GLOBAL, BP_GLOBAL_BASIC, BP_TWOBIT
localparam BPRED_NUM_LHR = 32'd6;
localparam BPRED_SIZE = 32'd12;
localparam BTB_SIZE = 32'd10;
localparam SVADU_SUPPORTED = 1;
localparam ZMMUL_SUPPORTED = 0;
// FPU division architecture
localparam RADIX = 32'h4;
localparam DIVCOPIES = 32'h4;
// bit manipulation
localparam ZBA_SUPPORTED = 1;
localparam ZBB_SUPPORTED = 1;
localparam ZBC_SUPPORTED = 1;
localparam ZBS_SUPPORTED = 1;
// Memory synthesis configuration
localparam USE_SRAM = 0;
`include "test-shared.vh"

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fpga/constraints/vcu-small-debug.xdc Normal file
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create_debug_core u_ila_0 ila
set_property C_DATA_DEPTH 2048 [get_debug_cores u_ila_0]
set_property C_TRIGIN_EN false [get_debug_cores u_ila_0]
set_property C_TRIGOUT_EN false [get_debug_cores u_ila_0]
set_property C_ADV_TRIGGER false [get_debug_cores u_ila_0]
set_property C_INPUT_PIPE_STAGES 0 [get_debug_cores u_ila_0]
set_property C_EN_STRG_QUAL false [get_debug_cores u_ila_0]
set_property ALL_PROBE_SAME_MU true [get_debug_cores u_ila_0]
set_property ALL_PROBE_SAME_MU_CNT 1 [get_debug_cores u_ila_0]
startgroup
set_property C_EN_STRG_QUAL true [get_debug_cores u_ila_0 ]
set_property C_ADV_TRIGGER true [get_debug_cores u_ila_0 ]
set_property ALL_PROBE_SAME_MU true [get_debug_cores u_ila_0 ]
set_property ALL_PROBE_SAME_MU_CNT 4 [get_debug_cores u_ila_0 ]
endgroup
connect_debug_port u_ila_0/clk [get_nets [list xlnx_ddr4_c0/inst/u_ddr4_infrastructure/addn_ui_clkout1 ]]
set_property port_width 64 [get_debug_ports u_ila_0/probe0]
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe0]
connect_debug_port u_ila_0/probe0 [get_nets [list {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[0]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[1]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[2]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[3]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[4]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[5]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[6]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[7]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[8]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[9]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[10]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[11]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[12]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[13]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[14]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[15]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[16]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[17]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[18]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[19]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[20]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[21]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[22]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[23]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[24]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[25]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[26]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[27]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[28]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[29]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[30]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[31]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[32]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[33]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[34]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[35]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[36]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[37]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[38]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[39]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[40]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[41]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[42]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[43]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[44]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[45]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[46]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[47]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[48]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[49]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[50]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[51]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[52]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[53]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[54]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[55]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[56]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[57]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[58]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[59]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[60]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[61]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[62]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/PCM[63]} ]]
create_debug_port u_ila_0 probe
set_property port_width 1 [get_debug_ports u_ila_0/probe1]
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe1]
connect_debug_port u_ila_0/probe1 [get_nets [list wallypipelinedsocwrapper/wallypipelinedsoc/core/TrapM ]]
create_debug_port u_ila_0 probe
set_property port_width 1 [get_debug_ports u_ila_0/probe2]
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe2]
connect_debug_port u_ila_0/probe2 [get_nets [list wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrValidM ]]
create_debug_port u_ila_0 probe
set_property port_width 32 [get_debug_ports u_ila_0/probe3]
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe3]
connect_debug_port u_ila_0/probe3 [get_nets [list {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[0]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[1]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[2]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[3]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[4]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[5]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[6]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[7]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[8]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[9]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[10]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[11]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[12]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[13]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[14]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[15]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[16]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[17]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[18]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[19]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[20]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[21]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[22]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[23]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[24]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[25]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[26]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[27]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[28]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[29]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[30]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/InstrM[31]} ]]
create_debug_port u_ila_0 probe
set_property port_width 32 [get_debug_ports u_ila_0/probe4]
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe4]
connect_debug_port u_ila_0/probe4 [get_nets [list {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[0]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[1]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[2]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[3]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[4]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[5]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[6]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[7]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[8]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[9]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[10]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[11]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[12]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[13]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[14]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[15]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[16]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[17]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[18]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[19]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[20]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[21]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[22]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[23]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[24]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[25]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[26]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[27]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[28]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[29]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[30]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHADDR[31]} ]]
create_debug_port u_ila_0 probe
set_property port_width 1 [get_debug_ports u_ila_0/probe5]
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe5]
connect_debug_port u_ila_0/probe5 [get_nets [list wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHREADY ]]
create_debug_port u_ila_0 probe
set_property port_width 64 [get_debug_ports u_ila_0/probe6]
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe6]
connect_debug_port u_ila_0/probe6 [get_nets [list {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[0]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[1]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[2]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[3]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[4]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[5]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[6]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[7]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[8]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[9]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[10]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[11]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[12]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[13]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[14]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[15]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[16]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[17]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[18]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[19]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[20]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[21]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[22]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[23]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[24]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[25]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[26]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[27]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[28]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[29]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[30]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[31]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[32]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[33]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[34]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[35]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[36]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[37]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[38]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[39]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[40]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[41]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[42]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[43]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[44]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[45]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[46]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[47]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[48]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[49]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[50]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[51]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[52]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[53]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[54]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[55]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[56]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[57]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[58]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[59]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[60]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[61]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[62]} {wallypipelinedsocwrapper/wallypipelinedsoc/core/lsu/LSUHWDATA[63]} ]]

2
fpga/generator/wally.tcl
View File

@ -83,7 +83,7 @@ if {$board=="ArtyA7"} {
source ../constraints/small-debug.xdc source ../constraints/small-debug.xdc
} else { } else {
source ../constraints/debug4.xdc source ../constraints/vcu-small-debug.xdc
} }

2
fpga/src/wallypipelinedsocwrapper.sv
View File

@ -34,7 +34,7 @@ module wallypipelinedsocwrapper (
input logic reset_ext, // external asynchronous reset pin input logic reset_ext, // external asynchronous reset pin
output logic reset, // reset synchronized to clk to prevent races on release output logic reset, // reset synchronized to clk to prevent races on release
// AHB Interface // AHB Interface
input logic [P.AHBW-1:0] HRDATAEXT, input logic [64-1:0] HRDATAEXT,
input logic HREADYEXT, HRESPEXT, input logic HREADYEXT, HRESPEXT,
output logic HSELEXT, output logic HSELEXT,
// outputs to external memory, shared with uncore memory // outputs to external memory, shared with uncore memory

1
sim/wave-fpu.do
View File

@ -7,6 +7,7 @@ add wave -noupdate /testbenchfp/Y
add wave -noupdate /testbenchfp/Z add wave -noupdate /testbenchfp/Z
add wave -noupdate /testbenchfp/Res add wave -noupdate /testbenchfp/Res
add wave -noupdate /testbenchfp/Ans add wave -noupdate /testbenchfp/Ans
add wave -noupdate /testbenchfp/reset
add wave -noupdate /testbenchfp/DivStart add wave -noupdate /testbenchfp/DivStart
add wave -noupdate /testbenchfp/FDivBusyE add wave -noupdate /testbenchfp/FDivBusyE
add wave -noupdate /testbenchfp/CheckNow add wave -noupdate /testbenchfp/CheckNow

1
src/fpu/fdivsqrt/fdivsqrtfgen2.sv
View File

@ -38,7 +38,6 @@ module fdivsqrtfgen2 import cvw::*; #(parameter cvw_t P) (
assign FN = (UM << 1) | (C & ~(C << 2)); assign FN = (UM << 1) | (C & ~(C << 2));
assign FZ = '0; assign FZ = '0;
always_comb // Choose which adder input will be used always_comb // Choose which adder input will be used
if (up) F = FP; if (up) F = FP;
else if (uz) F = FZ; else if (uz) F = FZ;

2
src/fpu/fdivsqrt/fdivsqrtiter.sv
View File

@ -63,7 +63,7 @@ module fdivsqrtiter import cvw::*; #(parameter cvw_t P) (
// Otherwise, the divisor is retained and the residual and result // Otherwise, the divisor is retained and the residual and result
// are fed back for the next iteration. // are fed back for the next iteration.
// Residual WS/SC registers/initializaiton mux // Residual WS/SC registers/initialization mux
mux2 #(P.DIVb+4) wsmux(WS[P.DIVCOPIES], X, IFDivStartE, WSN); mux2 #(P.DIVb+4) wsmux(WS[P.DIVCOPIES], X, IFDivStartE, WSN);
mux2 #(P.DIVb+4) wcmux(WC[P.DIVCOPIES], '0, IFDivStartE, WCN); mux2 #(P.DIVb+4) wcmux(WC[P.DIVCOPIES], '0, IFDivStartE, WCN);
flopen #(P.DIVb+4) wsreg(clk, FDivBusyE, WSN, WS[0]); flopen #(P.DIVb+4) wsreg(clk, FDivBusyE, WSN, WS[0]);

179
src/ieu/controller.sv
View File

@ -32,6 +32,8 @@ module controller import cvw::*; #(parameter cvw_t P) (
// Decode stage control signals // Decode stage control signals
input logic StallD, FlushD, // Stall, flush Decode stage input logic StallD, FlushD, // Stall, flush Decode stage
input logic [31:0] InstrD, // Instruction in Decode stage input logic [31:0] InstrD, // Instruction in Decode stage
input logic [1:0] STATUS_FS, // is FPU enabled?
input logic [3:0] ENVCFG_CBE, // Cache block operation enables
output logic [2:0] ImmSrcD, // Type of immediate extension output logic [2:0] ImmSrcD, // Type of immediate extension
input logic IllegalIEUFPUInstrD, // Illegal IEU and FPU instruction input logic IllegalIEUFPUInstrD, // Illegal IEU and FPU instruction
output logic IllegalBaseInstrD, // Illegal I-type instruction, or illegal RV32 access to upper 16 registers output logic IllegalBaseInstrD, // Illegal I-type instruction, or illegal RV32 access to upper 16 registers
@ -60,6 +62,9 @@ module controller import cvw::*; #(parameter cvw_t P) (
output logic [2:0] BALUControlE, // ALU Control signals for B instructions in Execute Stage output logic [2:0] BALUControlE, // ALU Control signals for B instructions in Execute Stage
output logic BMUActiveE, // Bit manipulation instruction being executed output logic BMUActiveE, // Bit manipulation instruction being executed
output logic MDUActiveE, // Mul/Div instruction being executed output logic MDUActiveE, // Mul/Div instruction being executed
output logic [3:0] CMOpM, // 1: cbo.inval; 2: cbo.flush; 4: cbo.clean; 8: cbo.zero
output logic IFUPrefetchE, // instruction prefetch
output logic LSUPrefetchM, // data prefetch
// Memory stage control signals // Memory stage control signals
input logic StallM, FlushM, // Stall, flush Memory stage input logic StallM, FlushM, // Stall, flush Memory stage
@ -80,16 +85,18 @@ module controller import cvw::*; #(parameter cvw_t P) (
output logic StoreStallD // Store (memory write) causes stall output logic StoreStallD // Store (memory write) causes stall
); );
logic [6:0] OpD; // Opcode in Decode stage logic [6:0] OpD; // Opcode in Decode stage
logic [2:0] Funct3D; // Funct3 field in Decode stage logic [2:0] Funct3D; // Funct3 field in Decode stage
logic [6:0] Funct7D; // Funct7 field in Decode stage logic [6:0] Funct7D; // Funct7 field in Decode stage
logic [4:0] Rs1D; // Rs1 source register in Decode stage logic [4:0] Rs1D, Rs2D, RdD; // Rs1/2 source register / dest reg in Decode stage
`define CTRLW 23 `define CTRLW 24
// pipelined control signals // pipelined control signals
logic RegWriteD, RegWriteE; // RegWrite (register will be written) logic RegWriteD, RegWriteE; // RegWrite (register will be written)
logic [2:0] ResultSrcD, ResultSrcE, ResultSrcM; // Select which result to write back to register file logic [2:0] ResultSrcD, ResultSrcE, ResultSrcM; // Select which result to write back to register file
logic [2:0] PreImmSrcD; // Immediate source format (before amending for prefetches)
logic [1:0] MemRWD, MemRWE; // Store (write to memory) logic [1:0] MemRWD, MemRWE; // Store (write to memory)
logic ALUOpD; // 0 for address generation, 1 for all other operations (must use Funct3) logic ALUOpD; // 0 for address generation, 1 for all other operations (must use Funct3)
logic BaseW64D; // W64 for Base instructions specifically logic BaseW64D; // W64 for Base instructions specifically
@ -103,6 +110,7 @@ module controller import cvw::*; #(parameter cvw_t P) (
logic CSRReadD; // CSR read instruction logic CSRReadD; // CSR read instruction
logic [1:0] AtomicD; // Atomic (AMO) instruction logic [1:0] AtomicD; // Atomic (AMO) instruction
logic FenceXD; // Fence instruction logic FenceXD; // Fence instruction
logic CMOD; // Cache management instruction
logic InvalidateICacheD, FlushDCacheD;// Invalidate I$, flush D$ logic InvalidateICacheD, FlushDCacheD;// Invalidate I$, flush D$
logic CSRWriteD, CSRWriteE; // CSR write logic CSRWriteD, CSRWriteE; // CSR write
logic PrivilegedD, PrivilegedE; // Privileged instruction logic PrivilegedD, PrivilegedE; // Privileged instruction
@ -126,16 +134,27 @@ module controller import cvw::*; #(parameter cvw_t P) (
logic [2:0] ZBBSelectD; // ZBB Mux Select Signal logic [2:0] ZBBSelectD; // ZBB Mux Select Signal
logic IFunctD, RFunctD, MFunctD; // Detect I, R, and M-type RV32IM/Rv64IM instructions logic IFunctD, RFunctD, MFunctD; // Detect I, R, and M-type RV32IM/Rv64IM instructions
logic LFunctD, SFunctD, BFunctD; // Detect load, store, branch instructions logic LFunctD, SFunctD, BFunctD; // Detect load, store, branch instructions
logic JFunctD; // detect jalr instruction logic FLSFunctD; // Detect floating-point loads and stores
logic JRFunctD; // detect jalr instruction
logic FenceFunctD; // Detect fence instruction
logic CMOFunctD; // Detect CMO instruction
logic AFunctD, AMOFunctD; // Detect atomic instructions
logic RWFunctD, MWFunctD; // detect RW/MW instructions
logic PFunctD, CSRFunctD; // detect privileged / CSR instruction
logic FenceM; // Fence.I or sfence.VMA instruction in memory stage logic FenceM; // Fence.I or sfence.VMA instruction in memory stage
logic [2:0] ALUSelectD; // ALU Output selection mux control logic [2:0] ALUSelectD; // ALU Output selection mux control
logic IWValidFunct3D; // Detects if Funct3 is valid for IW instructions logic IWValidFunct3D; // Detects if Funct3 is valid for IW instructions
logic [3:0] CMOpD, CMOpE; // which CMO instruction 1: cbo.inval; 2: cbo.flush; 4: cbo.clean; 8: cbo.zero
logic IFUPrefetchD; // instruction prefetch
logic LSUPrefetchD, LSUPrefetchE; // data prefetch
// Extract fields // Extract fields
assign OpD = InstrD[6:0]; assign OpD = InstrD[6:0];
assign Funct3D = InstrD[14:12]; assign Funct3D = InstrD[14:12];
assign Funct7D = InstrD[31:25]; assign Funct7D = InstrD[31:25];
assign Rs1D = InstrD[19:15]; assign Rs1D = InstrD[19:15];
assign Rs2D = InstrD[24:20];
assign RdD = InstrD[11:7];
// Funct 7 checking // Funct 7 checking
// Be rigorous about detecting illegal instructions if CSRs or bit manipulation is supported // Be rigorous about detecting illegal instructions if CSRs or bit manipulation is supported
@ -156,70 +175,108 @@ module controller import cvw::*; #(parameter cvw_t P) (
assign MFunctD = (Funct7D == 7'b0000001) & (P.M_SUPPORTED | (P.ZMMUL_SUPPORTED & ~Funct3D[2])); // muldiv assign MFunctD = (Funct7D == 7'b0000001) & (P.M_SUPPORTED | (P.ZMMUL_SUPPORTED & ~Funct3D[2])); // muldiv
assign LFunctD = Funct3D == 3'b000 | Funct3D == 3'b001 | Funct3D == 3'b010 | Funct3D == 3'b100 | Funct3D == 3'b101 | assign LFunctD = Funct3D == 3'b000 | Funct3D == 3'b001 | Funct3D == 3'b010 | Funct3D == 3'b100 | Funct3D == 3'b101 |
((P.XLEN == 64) & (Funct3D == 3'b011 | Funct3D == 3'b110)); ((P.XLEN == 64) & (Funct3D == 3'b011 | Funct3D == 3'b110));
assign FLSFunctD = (STATUS_FS != 2'b00) & ((Funct3D == 3'b010 & P.F_SUPPORTED) | (Funct3D == 3'b011 & P.D_SUPPORTED) |
(Funct3D == 3'b100 & P.Q_SUPPORTED) | (Funct3D == 3'b001 & P.ZFH_SUPPORTED));
assign FenceFunctD = (Funct3D == 3'b000) | (P.ZIFENCEI_SUPPORTED & Funct3D == 3'b001);
assign CMOFunctD = (Funct3D == 3'b010 & RdD == 5'b0) &
((P.ZICBOZ_SUPPORTED & InstrD[31:20] == 12'd4 & ENVCFG_CBE[3]) |
(P.ZICBOM_SUPPORTED & ((InstrD[31:20] == 12'd0 & (ENVCFG_CBE[1:0] != 2'b00))) |
(InstrD[31:20] == 12'd1 | InstrD[31:20] == 12'd2) & ENVCFG_CBE[2]));
// *** need to get with enable bits such as MENVCFG_CBZE
assign AFunctD = (Funct3D == 3'b010) | (P.XLEN == 64 & Funct3D == 3'b011);
assign AMOFunctD = (InstrD[31:27] == 5'b00001) |
(InstrD[31:27] == 5'b00000) |
(InstrD[31:27] == 5'b00100) |
(InstrD[31:27] == 5'b01100) |
(InstrD[31:27] == 5'b01000) |
(InstrD[31:27] == 5'b10000) |
(InstrD[31:27] == 5'b10100) |
(InstrD[31:27] == 5'b11000) |
(InstrD[31:27] == 5'b11100);
assign RWFunctD = ((Funct3D == 3'b000 | Funct3D == 3'b001 | Funct3D == 3'b101) & Funct7ZeroD |
(Funct3D == 3'b000 | Funct3D == 3'b101) & Funct7b5D) & (P.XLEN == 64);
assign MWFunctD = MFunctD & (P.XLEN == 64) & ~(Funct3D == 3'b001 | Funct3D == 3'b010 | Funct3D == 3'b011);
assign SFunctD = Funct3D == 3'b000 | Funct3D == 3'b001 | Funct3D == 3'b010 | assign SFunctD = Funct3D == 3'b000 | Funct3D == 3'b001 | Funct3D == 3'b010 |
((P.XLEN == 64) & (Funct3D == 3'b011)); ((P.XLEN == 64) & (Funct3D == 3'b011));
assign BFunctD = (Funct3D[2:1] != 2'b01); // legal branches assign BFunctD = Funct3D[2:1] != 2'b01; // legal branches
assign JFunctD = (Funct3D == 3'b000); assign JRFunctD = Funct3D == 3'b000;
assign PFunctD = Funct3D == 3'b000 & Rs1D == 5'b0 & RdD == 5'b0;
assign CSRFunctD = Funct3D[1:0] != 2'b00;
assign IWValidFunct3D = Funct3D == 3'b000 | Funct3D == 3'b001 | Funct3D == 3'b101; assign IWValidFunct3D = Funct3D == 3'b000 | Funct3D == 3'b001 | Funct3D == 3'b101;
end else begin:legalcheck2 end else begin:legalcheck2
assign IFunctD = 1; // Don't bother to separate out shift decoding assign IFunctD = 1; // Don't bother to separate out shift decoding
assign RFunctD = ~Funct7D[0]; // Not a multiply assign RFunctD = ~Funct7D[0]; // Not a multiply
assign MFunctD = Funct7D[0] & (P.M_SUPPORTED | (P.ZMMUL_SUPPORTED & ~Funct3D[2])); // muldiv assign MFunctD = Funct7D[0] & (P.M_SUPPORTED | (P.ZMMUL_SUPPORTED & ~Funct3D[2])); // muldiv
assign LFunctD = 1; // don't bother to check Funct3 for loads assign LFunctD = 1; // don't bother to check Funct3 for loads
assign FLSFunctD = 1; // don't bother to check Func3 for floating-point loads/stores
assign FenceFunctD = 1; // don't bother to check fields for fences
assign CMOFunctD = 1; // don't bother to check fields for CMO instructions
assign AFunctD = 1; // don't bother to check fields for atomics
assign AMOFunctD = 1; // don't bother to check Funct7 for AMO operations
assign RWFunctD = 1; // don't bother to check fields for RW instructions
assign MWFunctD = 1; // don't bother to check fields for MW instructions
assign SFunctD = 1; // don't bother to check Funct3 for stores assign SFunctD = 1; // don't bother to check Funct3 for stores
assign BFunctD = 1; // don't bother to check Funct3 for branches assign BFunctD = 1; // don't bother to check Funct3 for branches
assign JFunctD = 1; // don't bother to check Funct3 for jumps assign JRFunctD = 1; // don't bother to check Funct3 for jalrs
assign PFunctD = 1; // don't bother to check fields for privileged instructions
assign CSRFunctD = 1; // don't bother to check Funct3 for CSR operations
assign IWValidFunct3D = 1; assign IWValidFunct3D = 1;
end end
// Main Instruction Decoder // Main Instruction Decoder
/* verilator lint_off CASEINCOMPLETE */ /* verilator lint_off CASEINCOMPLETE */
always_comb begin always_comb begin
ControlsD = `CTRLW'b0_000_00_00_000_0_0_0_0_0_0_0_0_0_00_1; // default: Illegal instruction ControlsD = `CTRLW'b0_000_00_00_000_0_0_0_0_0_0_0_0_0_00_0_1; // default: Illegal instruction
case(OpD) case(OpD)
// RegWrite_ImmSrc_ALUSrc_MemRW_ResultSrc_Branch_ALUOp_Jump_ALUResultSrc_W64_CSRRead_Privileged_Fence_MDU_Atomic_Illegal // RegWrite_ImmSrc_ALUSrc_MemRW_ResultSrc_Branch_ALUOp_Jump_ALUResultSrc_W64_CSRRead_Privileged_Fence_MDU_Atomic_CMO_Illegal
7'b0000011: if (LFunctD) 7'b0000011: if (LFunctD)
ControlsD = `CTRLW'b1_000_01_10_001_0_0_0_0_0_0_0_0_0_00_0; // loads ControlsD = `CTRLW'b1_000_01_10_001_0_0_0_0_0_0_0_0_0_00_0_0; // loads
7'b0000111: ControlsD = `CTRLW'b0_000_01_10_001_0_0_0_0_0_0_0_0_0_00_1; // flw - only legal if FP supported 7'b0000111: if (FLSFunctD)
7'b0001111: if (P.ZIFENCEI_SUPPORTED) ControlsD = `CTRLW'b0_000_01_10_001_0_0_0_0_0_0_0_0_0_00_0_1; // flw - only legal if FP supported
ControlsD = `CTRLW'b0_000_00_00_000_0_0_0_0_0_0_0_1_0_00_0; // fence 7'b0001111: if (FenceFunctD) begin
if (P.ZIFENCEI_SUPPORTED)
ControlsD = `CTRLW'b0_000_00_00_000_0_0_0_0_0_0_0_1_0_00_0_0; // fence
else else
ControlsD = `CTRLW'b0_000_00_00_000_0_0_0_0_0_0_0_0_0_00_0; // fence treated as nop ControlsD = `CTRLW'b0_000_00_00_000_0_0_0_0_0_0_0_0_0_00_0_0; // fence treated as nop
end else if (CMOFunctD) begin
ControlsD = `CTRLW'b0_000_00_00_000_0_0_0_0_0_0_0_0_0_00_1_0; // CMO Instruction
end
7'b0010011: if (IFunctD) 7'b0010011: if (IFunctD)
ControlsD = `CTRLW'b1_000_01_00_000_0_1_0_0_0_0_0_0_0_00_0; // I-type ALU ControlsD = `CTRLW'b1_000_01_00_000_0_1_0_0_0_0_0_0_0_00_0_0; // I-type ALU
7'b0010111: ControlsD = `CTRLW'b1_100_11_00_000_0_0_0_0_0_0_0_0_0_00_0; // auipc 7'b0010111: ControlsD = `CTRLW'b1_100_11_00_000_0_0_0_0_0_0_0_0_0_00_0_0; // auipc
7'b0011011: if (IFunctD & IWValidFunct3D & P.XLEN == 64) 7'b0011011: if (IFunctD & IWValidFunct3D & P.XLEN == 64)
ControlsD = `CTRLW'b1_000_01_00_000_0_1_0_0_1_0_0_0_0_00_0; // IW-type ALU for RV64i ControlsD = `CTRLW'b1_000_01_00_000_0_1_0_0_1_0_0_0_0_00_0_0; // IW-type ALU for RV64i
7'b0100011: if (SFunctD) 7'b0100011: if (SFunctD)
ControlsD = `CTRLW'b0_001_01_01_000_0_0_0_0_0_0_0_0_0_00_0; // stores ControlsD = `CTRLW'b0_001_01_01_000_0_0_0_0_0_0_0_0_0_00_0_0; // stores
7'b0100111: ControlsD = `CTRLW'b0_001_01_01_000_0_0_0_0_0_0_0_0_0_00_1; // fsw - only legal if FP supported 7'b0100111: if (FLSFunctD)
7'b0101111: if (P.A_SUPPORTED) begin ControlsD = `CTRLW'b0_001_01_01_000_0_0_0_0_0_0_0_0_0_00_0_1; // fsw - only legal if FP supported
if (InstrD[31:27] == 5'b00010) 7'b0101111: if (P.A_SUPPORTED & AFunctD) begin
ControlsD = `CTRLW'b1_000_00_10_001_0_0_0_0_0_0_0_0_0_01_0; // lr if (InstrD[31:27] == 5'b00010 & Rs2D == 5'b0)
ControlsD = `CTRLW'b1_000_00_10_001_0_0_0_0_0_0_0_0_0_01_0_0; // lr
else if (InstrD[31:27] == 5'b00011) else if (InstrD[31:27] == 5'b00011)
ControlsD = `CTRLW'b1_101_01_01_100_0_0_0_0_0_0_0_0_0_01_0; // sc ControlsD = `CTRLW'b1_101_01_01_100_0_0_0_0_0_0_0_0_0_01_0_0; // sc
else else if (AMOFunctD)
ControlsD = `CTRLW'b1_101_01_11_001_0_0_0_0_0_0_0_0_0_10_0; // amo ControlsD = `CTRLW'b1_101_01_11_001_0_0_0_0_0_0_0_0_0_10_0_0; // amo
end end
7'b0110011: if (RFunctD) 7'b0110011: if (RFunctD)
ControlsD = `CTRLW'b1_000_00_00_000_0_1_0_0_0_0_0_0_0_00_0; // R-type ControlsD = `CTRLW'b1_000_00_00_000_0_1_0_0_0_0_0_0_0_00_0_0; // R-type
else if (MFunctD) else if (MFunctD)
ControlsD = `CTRLW'b1_000_00_00_011_0_0_0_0_0_0_0_0_1_00_0; // Multiply/divide ControlsD = `CTRLW'b1_000_00_00_011_0_0_0_0_0_0_0_0_1_00_0_0; // Multiply/divide
7'b0110111: ControlsD = `CTRLW'b1_100_01_00_000_0_0_0_1_0_0_0_0_0_00_0; // lui 7'b0110111: ControlsD = `CTRLW'b1_100_01_00_000_0_0_0_1_0_0_0_0_0_00_0_0; // lui
7'b0111011: if (RFunctD & (P.XLEN == 64)) 7'b0111011: if (RWFunctD)
ControlsD = `CTRLW'b1_000_00_00_000_0_1_0_0_1_0_0_0_0_00_0; // R-type W instructions for RV64i ControlsD = `CTRLW'b1_000_00_00_000_0_1_0_0_1_0_0_0_0_00_0_0; // R-type W instructions for RV64i
else if (MFunctD & (P.XLEN == 64)) else if (MWFunctD)
ControlsD = `CTRLW'b1_000_00_00_011_0_0_0_0_1_0_0_0_1_00_0; // W-type Multiply/Divide ControlsD = `CTRLW'b1_000_00_00_011_0_0_0_0_1_0_0_0_1_00_0_0; // W-type Multiply/Divide
7'b1100011: if (BFunctD) 7'b1100011: if (BFunctD)
ControlsD = `CTRLW'b0_010_11_00_000_1_0_0_0_0_0_0_0_0_00_0; // branches ControlsD = `CTRLW'b0_010_11_00_000_1_0_0_0_0_0_0_0_0_00_0_0; // branches
7'b1100111: if (JFunctD) 7'b1100111: if (JRFunctD)
ControlsD = `CTRLW'b1_000_01_00_000_0_0_1_1_0_0_0_0_0_00_0; // jalr ControlsD = `CTRLW'b1_000_01_00_000_0_0_1_1_0_0_0_0_0_00_0_0; // jalr
7'b1101111: ControlsD = `CTRLW'b1_011_11_00_000_0_0_1_1_0_0_0_0_0_00_0; // jal 7'b1101111: ControlsD = `CTRLW'b1_011_11_00_000_0_0_1_1_0_0_0_0_0_00_0_0; // jal
7'b1110011: if (P.ZICSR_SUPPORTED) begin 7'b1110011: if (P.ZICSR_SUPPORTED) begin
if (Funct3D == 3'b000) if (PFunctD)
ControlsD = `CTRLW'b0_000_00_00_000_0_0_0_0_0_0_1_0_0_00_0; // privileged; decoded further in priveleged modules ControlsD = `CTRLW'b0_000_00_00_000_0_0_0_0_0_0_1_0_0_00_0_0; // privileged; decoded further in privdec modules
else else if (CSRFunctD)
ControlsD = `CTRLW'b1_000_00_00_010_0_0_0_0_0_1_0_0_0_00_0; // csrs ControlsD = `CTRLW'b1_000_00_00_010_0_0_0_0_0_1_0_0_0_00_0_0; // csrs
end end
endcase endcase
end end
@ -230,9 +287,9 @@ module controller import cvw::*; #(parameter cvw_t P) (
// On RV32E, can't write to upper 16 registers. Checking reads to upper 16 is more costly so disregard them. // On RV32E, can't write to upper 16 registers. Checking reads to upper 16 is more costly so disregard them.
assign IllegalERegAdrD = P.E_SUPPORTED & P.ZICSR_SUPPORTED & ControlsD[`CTRLW-1] & InstrD[11]; assign IllegalERegAdrD = P.E_SUPPORTED & P.ZICSR_SUPPORTED & ControlsD[`CTRLW-1] & InstrD[11];
//assign IllegalBaseInstrD = 1'b0; //assign IllegalBaseInstrD = 1'b0;
assign {BaseRegWriteD, ImmSrcD, ALUSrcAD, BaseALUSrcBD, MemRWD, assign {BaseRegWriteD, PreImmSrcD, ALUSrcAD, BaseALUSrcBD, MemRWD,
ResultSrcD, BranchD, ALUOpD, JumpD, ALUResultSrcD, BaseW64D, CSRReadD, ResultSrcD, BranchD, ALUOpD, JumpD, ALUResultSrcD, BaseW64D, CSRReadD,
PrivilegedD, FenceXD, MDUD, AtomicD, unused} = IllegalIEUFPUInstrD ? `CTRLW'b0 : ControlsD; PrivilegedD, FenceXD, MDUD, AtomicD, CMOD, unused} = IllegalIEUFPUInstrD ? `CTRLW'b0 : ControlsD;
assign CSRZeroSrcD = InstrD[14] ? (InstrD[19:15] == 0) : (Rs1D == 0); // Is a CSR instruction using zero as the source? assign CSRZeroSrcD = InstrD[14] ? (InstrD[19:15] == 0) : (Rs1D == 0); // Is a CSR instruction using zero as the source?
assign CSRWriteD = CSRReadD & !(CSRZeroSrcD & InstrD[13]); // Don't write if setting or clearing zeros assign CSRWriteD = CSRReadD & !(CSRZeroSrcD & InstrD[13]); // Don't write if setting or clearing zeros
@ -300,13 +357,41 @@ module controller import cvw::*; #(parameter cvw_t P) (
assign FlushDCacheD = 0; assign FlushDCacheD = 0;
end end
// Cache Management instructions
always_comb begin
CMOpD = 4'b0000; // default: not a cbo instruction
if ((P.ZICBOM_SUPPORTED | P.ZICBOZ_SUPPORTED) & CMOD) begin
CMOpD[3] = (InstrD[31:20] == 12'd4); // cbo.zero
CMOpD[2] = (InstrD[31:20] == 12'd2); // cbo.clean
CMOpD[1] = (InstrD[31:20] == 12'd1) | ((InstrD[31:20] == 12'd0) & (ENVCFG_CBE[1:0] == 2'b01)); // cbo.flush
CMOpD[0] = (InstrD[31:20] == 12'd0) & (ENVCFG_CBE[1:0] == 2'b11); // cbo.inval
end
end
// Prefetch Hints
always_comb begin
// default: not a prefetch hint
IFUPrefetchD = 1'b0;
LSUPrefetchD = 1'b0;
ImmSrcD = PreImmSrcD;
if (P.ZICBOP_SUPPORTED & (InstrD[14:0] == 15'b110_00000_0010011)) begin // ori with destiation x0 is hint for Prefetch
case (Rs2D) // which type of prefectch? Note: prefetch.r and .w are handled the same in Wally
5'b00000: IFUPrefetchD = 1'b1; // prefetch.i
5'b00001: LSUPrefetchD = 1'b1; // prefetch.r
5'b00011: LSUPrefetchD = 1'b1; // prefetch.w
// default: not a prefetch hint
endcase
if (IFUPrefetchD | LSUPrefetchD) ImmSrcD = 3'b001; // use S-type immediate format for prefetches
end
end
// Decode stage pipeline control register // Decode stage pipeline control register
flopenrc #(1) controlregD(clk, reset, FlushD, ~StallD, 1'b1, InstrValidD); flopenrc #(1) controlregD(clk, reset, FlushD, ~StallD, 1'b1, InstrValidD);
// Execute stage pipeline control register and logic // Execute stage pipeline control register and logic
flopenrc #(29) controlregE(clk, reset, FlushE, ~StallE, flopenrc #(35) controlregE(clk, reset, FlushE, ~StallE,
{ALUSelectD, RegWriteD, ResultSrcD, MemRWD, JumpD, BranchD, ALUSrcAD, ALUSrcBD, ALUResultSrcD, CSRReadD, CSRWriteD, PrivilegedD, Funct3D, W64D, SubArithD, MDUD, AtomicD, InvalidateICacheD, FlushDCacheD, FenceD, InstrValidD}, {ALUSelectD, RegWriteD, ResultSrcD, MemRWD, JumpD, BranchD, ALUSrcAD, ALUSrcBD, ALUResultSrcD, CSRReadD, CSRWriteD, PrivilegedD, Funct3D, W64D, SubArithD, MDUD, AtomicD, InvalidateICacheD, FlushDCacheD, FenceD, CMOpD, IFUPrefetchD, LSUPrefetchD, InstrValidD},
{ALUSelectE, IEURegWriteE, ResultSrcE, MemRWE, JumpE, BranchE, ALUSrcAE, ALUSrcBE, ALUResultSrcE, CSRReadE, CSRWriteE, PrivilegedE, Funct3E, W64E, SubArithE, MDUE, AtomicE, InvalidateICacheE, FlushDCacheE, FenceE, InstrValidE}); {ALUSelectE, IEURegWriteE, ResultSrcE, MemRWE, JumpE, BranchE, ALUSrcAE, ALUSrcBE, ALUResultSrcE, CSRReadE, CSRWriteE, PrivilegedE, Funct3E, W64E, SubArithE, MDUE, AtomicE, InvalidateICacheE, FlushDCacheE, FenceE, CMOpE, IFUPrefetchE, LSUPrefetchE, InstrValidE});
// Branch Logic // Branch Logic
// The comparator handles both signed and unsigned branches using BranchSignedE // The comparator handles both signed and unsigned branches using BranchSignedE
@ -325,9 +410,9 @@ module controller import cvw::*; #(parameter cvw_t P) (
assign IntDivE = MDUE & Funct3E[2]; // Integer division operation assign IntDivE = MDUE & Funct3E[2]; // Integer division operation
// Memory stage pipeline control register // Memory stage pipeline control register
flopenrc #(20) controlregM(clk, reset, FlushM, ~StallM, flopenrc #(25) controlregM(clk, reset, FlushM, ~StallM,
{RegWriteE, ResultSrcE, MemRWE, CSRReadE, CSRWriteE, PrivilegedE, Funct3E, FWriteIntE, AtomicE, InvalidateICacheE, FlushDCacheE, FenceE, InstrValidE, IntDivE}, {RegWriteE, ResultSrcE, MemRWE, CSRReadE, CSRWriteE, PrivilegedE, Funct3E, FWriteIntE, AtomicE, InvalidateICacheE, FlushDCacheE, FenceE, InstrValidE, IntDivE, CMOpE, LSUPrefetchE},
{RegWriteM, ResultSrcM, MemRWM, CSRReadM, CSRWriteM, PrivilegedM, Funct3M, FWriteIntM, AtomicM, InvalidateICacheM, FlushDCacheM, FenceM, InstrValidM, IntDivM}); {RegWriteM, ResultSrcM, MemRWM, CSRReadM, CSRWriteM, PrivilegedM, Funct3M, FWriteIntM, AtomicM, InvalidateICacheM, FlushDCacheM, FenceM, InstrValidM, IntDivM, CMOpM, LSUPrefetchM});
// Writeback stage pipeline control register // Writeback stage pipeline control register
flopenrc #(5) controlregW(clk, reset, FlushW, ~StallW, flopenrc #(5) controlregW(clk, reset, FlushW, ~StallW,

2
src/ieu/datapath.sv
View File

@ -98,7 +98,7 @@ module datapath import cvw::*; #(parameter cvw_t P) (
assign Rs2D = InstrD[24:20]; assign Rs2D = InstrD[24:20];
assign RdD = InstrD[11:7]; assign RdD = InstrD[11:7];
regfile #(P.XLEN, P.E_SUPPORTED) regf(clk, reset, RegWriteW, Rs1D, Rs2D, RdW, ResultW, R1D, R2D); regfile #(P.XLEN, P.E_SUPPORTED) regf(clk, reset, RegWriteW, Rs1D, Rs2D, RdW, ResultW, R1D, R2D);
extend #(P.XLEN, P.A_SUPPORTED) ext(.InstrD(InstrD[31:7]), .ImmSrcD, .ImmExtD); extend #(P) ext(.InstrD(InstrD[31:7]), .ImmSrcD, .ImmExtD);
// Execute stage pipeline register and logic // Execute stage pipeline register and logic
flopenrc #(P.XLEN) RD1EReg(clk, reset, FlushE, ~StallE, R1D, R1E); flopenrc #(P.XLEN) RD1EReg(clk, reset, FlushE, ~StallE, R1D, R1E);

21
src/ieu/extend.sv
View File

@ -27,28 +27,29 @@
// and limitations under the License. // and limitations under the License.
//////////////////////////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////////////////////////
module extend #(parameter XLEN, A_SUPPORTED) ( module extend import cvw::*; #(parameter cvw_t P) (
input logic [31:7] InstrD, // All instruction bits except opcode (lower 7 bits) input logic [31:7] InstrD, // All instruction bits except opcode (lower 7 bits)
input logic [2:0] ImmSrcD, // Select what kind of extension to perform input logic [2:0] ImmSrcD, // Select what kind of extension to perform
output logic [XLEN-1:0] ImmExtD); // Extended immediate output logic [P.XLEN-1:0] ImmExtD); // Extended immediate
localparam [XLEN-1:0] undefined = {(XLEN){1'bx}}; // could change to 0 after debug localparam [P.XLEN-1:0] undefined = {(P.XLEN){1'bx}}; // could change to 0 after debug
always_comb always_comb
case(ImmSrcD) case (ImmSrcD)
// I-type // I-type
3'b000: ImmExtD = {{(XLEN-12){InstrD[31]}}, InstrD[31:20]}; 3'b000: ImmExtD = {{(P.XLEN-12){InstrD[31]}}, InstrD[31:20]};
// S-type (stores) // S-type (stores)
3'b001: ImmExtD = {{(XLEN-12){InstrD[31]}}, InstrD[31:25], InstrD[11:7]}; 3'b001: ImmExtD = {{(P.XLEN-12){InstrD[31]}}, InstrD[31:25], InstrD[11:7]};
// B-type (branches) // B-type (branches)
3'b010: ImmExtD = {{(XLEN-12){InstrD[31]}}, InstrD[7], InstrD[30:25], InstrD[11:8], 1'b0}; 3'b010: ImmExtD = {{(P.XLEN-12){InstrD[31]}}, InstrD[7], InstrD[30:25], InstrD[11:8], 1'b0};
// J-type (jal) // J-type (jal)
3'b011: ImmExtD = {{(XLEN-20){InstrD[31]}}, InstrD[19:12], InstrD[20], InstrD[30:21], 1'b0}; 3'b011: ImmExtD = {{(P.XLEN-20){InstrD[31]}}, InstrD[19:12], InstrD[20], InstrD[30:21], 1'b0};
// U-type (lui, auipc) // U-type (lui, auipc)
3'b100: ImmExtD = {{(XLEN-31){InstrD[31]}}, InstrD[30:12], 12'b0}; 3'b100: ImmExtD = {{(P.XLEN-31){InstrD[31]}}, InstrD[30:12], 12'b0};
// Store Conditional: zero offset // Store Conditional: zero offset
3'b101: if (A_SUPPORTED) ImmExtD = 0; 3'b101: if (P.A_SUPPORTED) ImmExtD = 0;
else ImmExtD = undefined; else ImmExtD = undefined;
default: ImmExtD = undefined; // undefined default: ImmExtD = undefined; // undefined
endcase endcase
endmodule endmodule

9
src/ieu/ieu.sv
View File

@ -30,6 +30,8 @@ module ieu import cvw::*; #(parameter cvw_t P) (
input logic clk, reset, input logic clk, reset,
// Decode stage signals // Decode stage signals
input logic [31:0] InstrD, // Instruction input logic [31:0] InstrD, // Instruction
input logic [1:0] STATUS_FS, // is FPU enabled?
input logic [3:0] ENVCFG_CBE, // Cache block operation enables
input logic IllegalIEUFPUInstrD, // Illegal instruction input logic IllegalIEUFPUInstrD, // Illegal instruction
output logic IllegalBaseInstrD, // Illegal I-type instruction, or illegal RV32 access to upper 16 registers output logic IllegalBaseInstrD, // Illegal I-type instruction, or illegal RV32 access to upper 16 registers
// Execute stage signals // Execute stage signals
@ -43,6 +45,9 @@ module ieu import cvw::*; #(parameter cvw_t P) (
output logic [P.XLEN-1:0] ForwardedSrcAE, ForwardedSrcBE, // ALU src inputs before the mux choosing between them and PCE to put in srcA/B output logic [P.XLEN-1:0] ForwardedSrcAE, ForwardedSrcBE, // ALU src inputs before the mux choosing between them and PCE to put in srcA/B
output logic [4:0] RdE, // Destination register output logic [4:0] RdE, // Destination register
output logic MDUActiveE, // Mul/Div instruction being executed output logic MDUActiveE, // Mul/Div instruction being executed
output logic [3:0] CMOpM, // 1: cbo.inval; 2: cbo.flush; 4: cbo.clean; 8: cbo.zero
output logic IFUPrefetchE, // instruction prefetch
output logic LSUPrefetchM, // datata prefetch
// Memory stage signals // Memory stage signals
input logic SquashSCW, // Squash store conditional, from LSU input logic SquashSCW, // Squash store conditional, from LSU
output logic [1:0] MemRWM, // Read/write control goes to LSU output logic [1:0] MemRWM, // Read/write control goes to LSU
@ -97,11 +102,11 @@ module ieu import cvw::*; #(parameter cvw_t P) (
logic BMUActiveE; // Bit manipulation instruction being executed logic BMUActiveE; // Bit manipulation instruction being executed
controller #(P) c( controller #(P) c(
.clk, .reset, .StallD, .FlushD, .InstrD, .ImmSrcD, .clk, .reset, .StallD, .FlushD, .InstrD, .STATUS_FS, .ENVCFG_CBE, .ImmSrcD,
.IllegalIEUFPUInstrD, .IllegalBaseInstrD, .StallE, .FlushE, .FlagsE, .FWriteIntE, .IllegalIEUFPUInstrD, .IllegalBaseInstrD, .StallE, .FlushE, .FlagsE, .FWriteIntE,
.PCSrcE, .ALUSrcAE, .ALUSrcBE, .ALUResultSrcE, .ALUSelectE, .MemReadE, .CSRReadE, .PCSrcE, .ALUSrcAE, .ALUSrcBE, .ALUResultSrcE, .ALUSelectE, .MemReadE, .CSRReadE,
.Funct3E, .IntDivE, .MDUE, .W64E, .SubArithE, .BranchD, .BranchE, .JumpD, .JumpE, .SCE, .Funct3E, .IntDivE, .MDUE, .W64E, .SubArithE, .BranchD, .BranchE, .JumpD, .JumpE, .SCE,
.BranchSignedE, .BSelectE, .ZBBSelectE, .BALUControlE, .BMUActiveE, .MDUActiveE, .BranchSignedE, .BSelectE, .ZBBSelectE, .BALUControlE, .BMUActiveE, .MDUActiveE, .CMOpM, .IFUPrefetchE, .LSUPrefetchM,
.StallM, .FlushM, .MemRWM, .CSRReadM, .CSRWriteM, .PrivilegedM, .AtomicM, .Funct3M, .StallM, .FlushM, .MemRWM, .CSRReadM, .CSRWriteM, .PrivilegedM, .AtomicM, .Funct3M,
.RegWriteM, .FlushDCacheM, .InstrValidM, .InstrValidE, .InstrValidD, .FWriteIntM, .RegWriteM, .FlushDCacheM, .InstrValidM, .InstrValidE, .InstrValidD, .FWriteIntM,
.StallW, .FlushW, .RegWriteW, .IntDivW, .ResultSrcW, .CSRWriteFenceM, .InvalidateICacheM, .StoreStallD); .StallW, .FlushW, .RegWriteW, .IntDivW, .ResultSrcW, .CSRWriteFenceM, .InvalidateICacheM, .StoreStallD);

4
src/lsu/lsu.sv
View File

@ -39,6 +39,8 @@ module lsu import cvw::*; #(parameter cvw_t P) (
input logic [6:0] Funct7M, // Atomic memory operation function input logic [6:0] Funct7M, // Atomic memory operation function
input logic [1:0] AtomicM, // Atomic memory operation input logic [1:0] AtomicM, // Atomic memory operation
input logic FlushDCacheM, // Flush D cache to next level of memory input logic FlushDCacheM, // Flush D cache to next level of memory
input logic [3:0] CMOpM, // 1: cbo.inval; 2: cbo.flush; 4: cbo.clean; 8: cbo.zero
input logic LSUPrefetchM, // Prefetch
output logic CommittedM, // Delay interrupts while memory operation in flight output logic CommittedM, // Delay interrupts while memory operation in flight
output logic SquashSCW, // Store conditional failed disable write to GPR output logic SquashSCW, // Store conditional failed disable write to GPR
output logic DCacheMiss, // D cache miss for performance counters output logic DCacheMiss, // D cache miss for performance counters
@ -260,6 +262,8 @@ module lsu import cvw::*; #(parameter cvw_t P) (
assign CacheAtomicM = CacheableM & ~IgnoreRequestTLB & ~SelDTIM ? LSUAtomicM : '0; assign CacheAtomicM = CacheableM & ~IgnoreRequestTLB & ~SelDTIM ? LSUAtomicM : '0;
assign FlushDCache = FlushDCacheM & ~(IgnoreRequestTLB | SelHPTW); assign FlushDCache = FlushDCacheM & ~(IgnoreRequestTLB | SelHPTW);
// *** need RT to add support for CMOpM and LSUPrefetchM (DH 7/2/23)
// *** prefetch can just act as a read operation
cache #(.P(P), .PA_BITS(P.PA_BITS), .XLEN(P.XLEN), .LINELEN(P.DCACHE_LINELENINBITS), .NUMLINES(P.DCACHE_WAYSIZEINBYTES*8/LINELEN), cache #(.P(P), .PA_BITS(P.PA_BITS), .XLEN(P.XLEN), .LINELEN(P.DCACHE_LINELENINBITS), .NUMLINES(P.DCACHE_WAYSIZEINBYTES*8/LINELEN),
.NUMWAYS(P.DCACHE_NUMWAYS), .LOGBWPL(LLENLOGBWPL), .WORDLEN(P.LLEN), .MUXINTERVAL(P.LLEN), .READ_ONLY_CACHE(0)) dcache( .NUMWAYS(P.DCACHE_NUMWAYS), .LOGBWPL(LLENLOGBWPL), .WORDLEN(P.LLEN), .MUXINTERVAL(P.LLEN), .READ_ONLY_CACHE(0)) dcache(
.clk, .reset, .Stall(GatedStallW), .SelBusBeat, .FlushStage(FlushW), .CacheRW(CacheRWM), .CacheAtomic(CacheAtomicM), .clk, .reset, .Stall(GatedStallW), .SelBusBeat, .FlushStage(FlushW), .CacheRW(CacheRWM), .CacheAtomic(CacheAtomicM),

28
src/privileged/csr.sv
View File

@ -84,6 +84,7 @@ module csr import cvw::*; #(parameter cvw_t P) (
output var logic [7:0] PMPCFG_ARRAY_REGW[P.PMP_ENTRIES-1:0], output var logic [7:0] PMPCFG_ARRAY_REGW[P.PMP_ENTRIES-1:0],
output var logic [P.PA_BITS-3:0] PMPADDR_ARRAY_REGW[P.PMP_ENTRIES-1:0], output var logic [P.PA_BITS-3:0] PMPADDR_ARRAY_REGW[P.PMP_ENTRIES-1:0],
output logic [2:0] FRM_REGW, output logic [2:0] FRM_REGW,
output logic [3:0] ENVCFG_CBE,
// //
output logic [P.XLEN-1:0] CSRReadValW, // value read from CSR output logic [P.XLEN-1:0] CSRReadValW, // value read from CSR
output logic [P.XLEN-1:0] UnalignedPCNextF, // Next PC, accounting for traps and returns output logic [P.XLEN-1:0] UnalignedPCNextF, // Next PC, accounting for traps and returns
@ -123,7 +124,11 @@ module csr import cvw::*; #(parameter cvw_t P) (
logic [P.XLEN-1:0] TVecAlignedM; logic [P.XLEN-1:0] TVecAlignedM;
logic InstrValidNotFlushedM; logic InstrValidNotFlushedM;
logic STimerInt; logic STimerInt;
logic MENVCFG_STCE; logic [63:0] MENVCFG_REGW;
logic [P.XLEN-1:0] SENVCFG_REGW;
logic ENVCFG_STCE; // supervisor timer counter enable
logic ENVCFG_PBMTE; // page-based memory types enable
logic ENVCFG_FIOM; // fence implies io (presently not used)
// only valid unflushed instructions can access CSRs // only valid unflushed instructions can access CSRs
assign InstrValidNotFlushedM = InstrValidM & ~StallW & ~FlushW; assign InstrValidNotFlushedM = InstrValidM & ~StallW & ~FlushW;
@ -214,7 +219,7 @@ module csr import cvw::*; #(parameter cvw_t P) (
csri #(P) csri(.clk, .reset, csri #(P) csri(.clk, .reset,
.CSRMWriteM, .CSRSWriteM, .CSRWriteValM, .CSRAdrM, .CSRMWriteM, .CSRSWriteM, .CSRWriteValM, .CSRAdrM,
.MExtInt, .SExtInt, .MTimerInt, .STimerInt, .MSwInt, .MExtInt, .SExtInt, .MTimerInt, .STimerInt, .MSwInt,
.MIDELEG_REGW, .MENVCFG_STCE, .MIP_REGW, .MIE_REGW, .MIP_REGW_writeable); .MIDELEG_REGW, .ENVCFG_STCE, .MIP_REGW, .MIE_REGW, .MIP_REGW_writeable);
csrsr #(P) csrsr(.clk, .reset, .StallW, csrsr #(P) csrsr(.clk, .reset, .StallW,
.WriteMSTATUSM, .WriteMSTATUSHM, .WriteSSTATUSM, .WriteMSTATUSM, .WriteMSTATUSHM, .WriteSSTATUSM,
@ -233,10 +238,12 @@ module csr import cvw::*; #(parameter cvw_t P) (
.MEDELEG_REGW, .MIDELEG_REGW,.PMPCFG_ARRAY_REGW, .PMPADDR_ARRAY_REGW, .MEDELEG_REGW, .MIDELEG_REGW,.PMPCFG_ARRAY_REGW, .PMPADDR_ARRAY_REGW,
.MIP_REGW, .MIE_REGW, .WriteMSTATUSM, .WriteMSTATUSHM, .MIP_REGW, .MIE_REGW, .WriteMSTATUSM, .WriteMSTATUSHM,
.IllegalCSRMAccessM, .IllegalCSRMWriteReadonlyM, .IllegalCSRMAccessM, .IllegalCSRMWriteReadonlyM,
.MENVCFG_STCE); .MENVCFG_REGW);
if (P.S_SUPPORTED) begin:csrs if (P.S_SUPPORTED) begin:csrs
logic STCE;
assign STCE = P.SSTC_SUPPORTED & (PrivilegeModeW == P.M_MODE | (MCOUNTEREN_REGW[1] & ENVCFG_STCE));
csrs #(P) csrs(.clk, .reset, csrs #(P) csrs(.clk, .reset,
.CSRSWriteM, .STrapM, .CSRAdrM, .CSRSWriteM, .STrapM, .CSRAdrM,
.NextEPCM, .NextCauseM, .NextMtvalM, .SSTATUS_REGW, .NextEPCM, .NextCauseM, .NextMtvalM, .SSTATUS_REGW,
@ -244,8 +251,8 @@ module csr import cvw::*; #(parameter cvw_t P) (
.CSRWriteValM, .PrivilegeModeW, .CSRWriteValM, .PrivilegeModeW,
.CSRSReadValM, .STVEC_REGW, .SEPC_REGW, .CSRSReadValM, .STVEC_REGW, .SEPC_REGW,
.SCOUNTEREN_REGW, .SCOUNTEREN_REGW,
.SATP_REGW, .MIP_REGW, .MIE_REGW, .MIDELEG_REGW, .MTIME_CLINT, .MENVCFG_STCE, .SATP_REGW, .MIP_REGW, .MIE_REGW, .MIDELEG_REGW, .MTIME_CLINT, .STCE,
.WriteSSTATUSM, .IllegalCSRSAccessM, .STimerInt); .WriteSSTATUSM, .IllegalCSRSAccessM, .STimerInt, .SENVCFG_REGW);
end else begin end else begin
assign WriteSSTATUSM = 0; assign WriteSSTATUSM = 0;
assign CSRSReadValM = 0; assign CSRSReadValM = 0;
@ -282,6 +289,17 @@ module csr import cvw::*; #(parameter cvw_t P) (
assign IllegalCSRCAccessM = 1; // counters aren't enabled assign IllegalCSRCAccessM = 1; // counters aren't enabled
end end
// Broadcast appropriate environment configuration based on privilege mode
assign ENVCFG_STCE = MENVCFG_REGW[63]; // supervisor timer counter enable
assign ENVCFG_PBMTE = MENVCFG_REGW[62]; // page-based memory types enable
assign ENVCFG_CBE = (PrivilegeModeW == P.M_MODE) ? 4'b1111 :
(PrivilegeModeW == P.S_MODE | !P.S_SUPPORTED) ? MENVCFG_REGW[7:4] :
(MENVCFG_REGW[7:4] & SENVCFG_REGW[7:4]);
// FIOM presently doesn't do anything because Wally fences don't do anything
assign ENVCFG_FIOM = (PrivilegeModeW == P.M_MODE) ? 1'b1 :
(PrivilegeModeW == P.S_MODE | !P.S_SUPPORTED) ? MENVCFG_REGW[0] :
(MENVCFG_REGW[0] & SENVCFG_REGW[0]);
// merge CSR Reads // merge CSR Reads
assign CSRReadValM = CSRUReadValM | CSRSReadValM | CSRMReadValM | CSRCReadValM; assign CSRReadValM = CSRUReadValM | CSRSReadValM | CSRMReadValM | CSRCReadValM;
flopenrc #(P.XLEN) CSRValWReg(clk, reset, FlushW, ~StallW, CSRReadValM, CSRReadValW); flopenrc #(P.XLEN) CSRValWReg(clk, reset, FlushW, ~StallW, CSRReadValM, CSRReadValW);

4
src/privileged/csri.sv
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@ -34,7 +34,7 @@ module csri import cvw::*; #(parameter cvw_t P) (
input logic [11:0] CSRAdrM, input logic [11:0] CSRAdrM,
input logic MExtInt, SExtInt, MTimerInt, STimerInt, MSwInt, input logic MExtInt, SExtInt, MTimerInt, STimerInt, MSwInt,
input logic [11:0] MIDELEG_REGW, input logic [11:0] MIDELEG_REGW,
input logic MENVCFG_STCE, input logic ENVCFG_STCE,
output logic [11:0] MIP_REGW, MIE_REGW, output logic [11:0] MIP_REGW, MIE_REGW,
output logic [11:0] MIP_REGW_writeable // only SEIP, STIP, SSIP are actually writeable; the rest are hardwired to 0 output logic [11:0] MIP_REGW_writeable // only SEIP, STIP, SSIP are actually writeable; the rest are hardwired to 0
); );
@ -61,7 +61,7 @@ module csri import cvw::*; #(parameter cvw_t P) (
if (P.S_SUPPORTED) begin:mask if (P.S_SUPPORTED) begin:mask
if (P.SSTC_SUPPORTED) begin if (P.SSTC_SUPPORTED) begin
assign MIP_WRITE_MASK = 12'h202; // SEIP and SSIP are writable, but STIP is not writable when STIMECMP is implemented (see SSTC spec) assign MIP_WRITE_MASK = 12'h202; // SEIP and SSIP are writable, but STIP is not writable when STIMECMP is implemented (see SSTC spec)
assign STIP = MENVCFG_STCE ? STimerInt : MIP_REGW_writeable[5]; assign STIP = ENVCFG_STCE ? STimerInt : MIP_REGW_writeable[5];
end else begin end else begin
assign MIP_WRITE_MASK = 12'h222; // SEIP, STIP, SSIP are writeable in MIP (20210108-draft 3.1.9) assign MIP_WRITE_MASK = 12'h222; // SEIP, STIP, SSIP are writeable in MIP (20210108-draft 3.1.9)
assign STIP = MIP_REGW_writeable[5]; assign STIP = MIP_REGW_writeable[5];

12
src/privileged/csrm.sv
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@ -48,12 +48,11 @@ module csrm import cvw::*; #(parameter cvw_t P) (
output var logic [P.PA_BITS-3:0] PMPADDR_ARRAY_REGW [P.PMP_ENTRIES-1:0], output var logic [P.PA_BITS-3:0] PMPADDR_ARRAY_REGW [P.PMP_ENTRIES-1:0],
output logic WriteMSTATUSM, WriteMSTATUSHM, output logic WriteMSTATUSM, WriteMSTATUSHM,
output logic IllegalCSRMAccessM, IllegalCSRMWriteReadonlyM, output logic IllegalCSRMAccessM, IllegalCSRMWriteReadonlyM,
output logic MENVCFG_STCE output logic [63:0] MENVCFG_REGW
); );
logic [P.XLEN-1:0] MISA_REGW, MHARTID_REGW; logic [P.XLEN-1:0] MISA_REGW, MHARTID_REGW;
logic [P.XLEN-1:0] MSCRATCH_REGW, MTVAL_REGW, MCAUSE_REGW; logic [P.XLEN-1:0] MSCRATCH_REGW, MTVAL_REGW, MCAUSE_REGW;
logic [63:0] MENVCFG_REGW;
logic [P.XLEN-1:0] MENVCFGH_REGW; logic [P.XLEN-1:0] MENVCFGH_REGW;
logic [63:0] MENVCFG_PreWriteValM, MENVCFG_WriteValM; logic [63:0] MENVCFG_PreWriteValM, MENVCFG_WriteValM;
logic WriteMTVECM, WriteMEDELEGM, WriteMIDELEGM; logic WriteMTVECM, WriteMEDELEGM, WriteMIDELEGM;
@ -193,15 +192,6 @@ module csrm import cvw::*; #(parameter cvw_t P) (
assign MENVCFGH_REGW = MENVCFG_REGW[63:32]; assign MENVCFGH_REGW = MENVCFG_REGW[63:32];
end end
// Extract bit fields
assign MENVCFG_STCE = MENVCFG_REGW[63];
// Uncomment these other fields when they are defined
// assign MENVCFG_PBMTE = MENVCFG_REGW[62];
// assign MENVCFG_CBZE = MENVCFG_REGW[7];
// assign MENVCFG_CBCFE = MENVCFG_REGW[6];
// assign MENVCFG_CBIE = MENVCFG_REGW[5:4];
// assign MENVCFG_FIOM = MENVCFG_REGW[0];
// Read machine mode CSRs // Read machine mode CSRs
// verilator lint_off WIDTH // verilator lint_off WIDTH
logic [5:0] entry; logic [5:0] entry;

25
src/privileged/csrs.sv
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@ -44,10 +44,12 @@ module csrs import cvw::*; #(parameter cvw_t P) (
output logic [P.XLEN-1:0] SATP_REGW, output logic [P.XLEN-1:0] SATP_REGW,
input logic [11:0] MIP_REGW, MIE_REGW, MIDELEG_REGW, input logic [11:0] MIP_REGW, MIE_REGW, MIDELEG_REGW,
input logic [63:0] MTIME_CLINT, input logic [63:0] MTIME_CLINT,
input logic MENVCFG_STCE, input logic STCE,
output logic WriteSSTATUSM, output logic WriteSSTATUSM,
output logic IllegalCSRSAccessM, output logic IllegalCSRSAccessM,
output logic STimerInt output logic STimerInt,
output logic [P.XLEN-1:0] SENVCFG_REGW
); );
// Supervisor CSRs // Supervisor CSRs
@ -75,7 +77,6 @@ module csrs import cvw::*; #(parameter cvw_t P) (
logic WriteSENVCFGM; logic WriteSENVCFGM;
logic [P.XLEN-1:0] SSCRATCH_REGW, STVAL_REGW, SCAUSE_REGW; logic [P.XLEN-1:0] SSCRATCH_REGW, STVAL_REGW, SCAUSE_REGW;
logic [P.XLEN-1:0] SENVCFG_REGW;
logic [P.XLEN-1:0] SENVCFG_WriteValM; logic [P.XLEN-1:0] SENVCFG_WriteValM;
logic [63:0] STIMECMP_REGW; logic [63:0] STIMECMP_REGW;
@ -90,8 +91,8 @@ module csrs import cvw::*; #(parameter cvw_t P) (
assign WriteSATPM = CSRSWriteM & (CSRAdrM == SATP) & (PrivilegeModeW == P.M_MODE | ~STATUS_TVM); assign WriteSATPM = CSRSWriteM & (CSRAdrM == SATP) & (PrivilegeModeW == P.M_MODE | ~STATUS_TVM);
assign WriteSCOUNTERENM = CSRSWriteM & (CSRAdrM == SCOUNTEREN); assign WriteSCOUNTERENM = CSRSWriteM & (CSRAdrM == SCOUNTEREN);
assign WriteSENVCFGM = CSRSWriteM & (CSRAdrM == SENVCFG); assign WriteSENVCFGM = CSRSWriteM & (CSRAdrM == SENVCFG);
assign WriteSTIMECMPM = CSRSWriteM & (CSRAdrM == STIMECMP) & (PrivilegeModeW == P.M_MODE | (MCOUNTEREN_TM & MENVCFG_STCE)); assign WriteSTIMECMPM = CSRSWriteM & (CSRAdrM == STIMECMP) & STCE;
assign WriteSTIMECMPHM = CSRSWriteM & (CSRAdrM == STIMECMPH) & (PrivilegeModeW == P.M_MODE | (MCOUNTEREN_TM & MENVCFG_STCE)) & (P.XLEN == 32); assign WriteSTIMECMPHM = CSRSWriteM & (CSRAdrM == STIMECMPH) & STCE & (P.XLEN == 32);
// CSRs // CSRs
flopenr #(P.XLEN) STVECreg(clk, reset, WriteSTVECM, {CSRWriteValM[P.XLEN-1:2], 1'b0, CSRWriteValM[0]}, STVEC_REGW); flopenr #(P.XLEN) STVECreg(clk, reset, WriteSTVECM, {CSRWriteValM[P.XLEN-1:2], 1'b0, CSRWriteValM[0]}, STVEC_REGW);
@ -125,19 +126,11 @@ module csrs import cvw::*; #(parameter cvw_t P) (
CSRWriteValM[7] & P.ZICBOZ_SUPPORTED, CSRWriteValM[7] & P.ZICBOZ_SUPPORTED,
CSRWriteValM[6:4] & {3{P.ZICBOM_SUPPORTED}}, CSRWriteValM[6:4] & {3{P.ZICBOM_SUPPORTED}},
3'b0, 3'b0,
CSRWriteValM[0] & P.S_SUPPORTED & P.VIRTMEM_SUPPORTED CSRWriteValM[0] & P.VIRTMEM_SUPPORTED
}; };
flopenr #(P.XLEN) SENVCFGreg(clk, reset, WriteSENVCFGM, SENVCFG_WriteValM, SENVCFG_REGW); flopenr #(P.XLEN) SENVCFGreg(clk, reset, WriteSENVCFGM, SENVCFG_WriteValM, SENVCFG_REGW);
// Extract bit fields
// Uncomment these other fields when they are defined
// assign SENVCFG_PBMTE = SENVCFG_REGW[62];
// assign SENVCFG_CBZE = SENVCFG_REGW[7];
// assign SENVCFG_CBCFE = SENVCFG_REGW[6];
// assign SENVCFG_CBIE = SENVCFG_REGW[5:4];
// assign SENVCFG_FIOM = SENVCFG_REGW[0];
// CSR Reads // CSR Reads
always_comb begin:csrr always_comb begin:csrr
IllegalCSRSAccessM = 0; IllegalCSRSAccessM = 0;
@ -157,13 +150,13 @@ module csrs import cvw::*; #(parameter cvw_t P) (
end end
SCOUNTEREN:CSRSReadValM = {{(P.XLEN-32){1'b0}}, SCOUNTEREN_REGW}; SCOUNTEREN:CSRSReadValM = {{(P.XLEN-32){1'b0}}, SCOUNTEREN_REGW};
SENVCFG: CSRSReadValM = SENVCFG_REGW; SENVCFG: CSRSReadValM = SENVCFG_REGW;
STIMECMP: if (P.SSTC_SUPPORTED & (PrivilegeModeW == P.M_MODE | (MCOUNTEREN_TM && MENVCFG_STCE))) STIMECMP: if (STCE)
CSRSReadValM = STIMECMP_REGW[P.XLEN-1:0]; CSRSReadValM = STIMECMP_REGW[P.XLEN-1:0];
else begin else begin
CSRSReadValM = 0; CSRSReadValM = 0;
IllegalCSRSAccessM = 1; IllegalCSRSAccessM = 1;
end end
STIMECMPH: if (P.SSTC_SUPPORTED & (P.XLEN == 32) & (PrivilegeModeW == P.M_MODE | (MCOUNTEREN_TM && MENVCFG_STCE))) STIMECMPH: if (STCE)
CSRSReadValM[31:0] = STIMECMP_REGW[63:32]; CSRSReadValM[31:0] = STIMECMP_REGW[63:32];
else begin // not supported for RV64 else begin // not supported for RV64
CSRSReadValM = 0; CSRSReadValM = 0;

3
src/privileged/privileged.sv
View File

@ -82,6 +82,7 @@ module privileged import cvw::*; #(parameter cvw_t P) (
output var logic [7:0] PMPCFG_ARRAY_REGW[P.PMP_ENTRIES-1:0], // PMP configuration entries to MMU output var logic [7:0] PMPCFG_ARRAY_REGW[P.PMP_ENTRIES-1:0], // PMP configuration entries to MMU
output var logic [P.PA_BITS-3:0] PMPADDR_ARRAY_REGW [P.PMP_ENTRIES-1:0], // PMP address entries to MMU output var logic [P.PA_BITS-3:0] PMPADDR_ARRAY_REGW [P.PMP_ENTRIES-1:0], // PMP address entries to MMU
output logic [2:0] FRM_REGW, // FPU rounding mode output logic [2:0] FRM_REGW, // FPU rounding mode
output logic [3:0] ENVCFG_CBE, // Cache block operation enables
// PC logic output in privileged unit // PC logic output in privileged unit
output logic [P.XLEN-1:0] UnalignedPCNextF, // Next PC from trap/return PC logic output logic [P.XLEN-1:0] UnalignedPCNextF, // Next PC from trap/return PC logic
// control outputs // control outputs
@ -136,7 +137,7 @@ module privileged import cvw::*; #(parameter cvw_t P) (
.STATUS_MIE, .STATUS_SIE, .STATUS_MXR, .STATUS_SUM, .STATUS_MPRV, .STATUS_TW, .STATUS_FS, .STATUS_MIE, .STATUS_SIE, .STATUS_MXR, .STATUS_SUM, .STATUS_MPRV, .STATUS_TW, .STATUS_FS,
.MEDELEG_REGW, .MIP_REGW, .MIE_REGW, .MIDELEG_REGW, .MEDELEG_REGW, .MIP_REGW, .MIE_REGW, .MIDELEG_REGW,
.SATP_REGW, .PMPCFG_ARRAY_REGW, .PMPADDR_ARRAY_REGW, .SATP_REGW, .PMPCFG_ARRAY_REGW, .PMPADDR_ARRAY_REGW,
.SetFflagsM, .FRM_REGW, .SetFflagsM, .FRM_REGW, .ENVCFG_CBE,
.CSRReadValW,.UnalignedPCNextF, .IllegalCSRAccessM, .BigEndianM); .CSRReadValW,.UnalignedPCNextF, .IllegalCSRAccessM, .BigEndianM);
// pipeline early-arriving trap sources // pipeline early-arriving trap sources

106
src/uncore/plic_apb.sv
View File

@ -31,7 +31,6 @@
// and limitations under the License. // and limitations under the License.
//////////////////////////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////////////////////////
`define N P.PLIC_NUM_SRC
// number of interrupt sources // number of interrupt sources
// does not include source 0, which does not connect to anything according to spec // does not include source 0, which does not connect to anything according to spec
// up to 63 sources supported; in the future, allow up to 1023 sources // up to 63 sources supported; in the future, allow up to 1023 sources
@ -59,19 +58,20 @@ module plic_apb import cvw::*; #(parameter cvw_t P) (
logic [31:0] Din, Dout; logic [31:0] Din, Dout;
// context-independent signals // context-independent signals
logic [`N:1] requests; logic [P.PLIC_NUM_SRC:1] requests;
logic [`N:1][2:0] intPriority; logic [P.PLIC_NUM_SRC:1][2:0] intPriority;
logic [`N:1] intInProgress, intPending, nextIntPending; logic [P.PLIC_NUM_SRC:1] intInProgress, intPending, nextIntPending;
// context-dependent signals // context-dependent signals
logic [`C-1:0][2:0] intThreshold; logic [`C-1:0][2:0] intThreshold;
logic [`C-1:0][`N:1] intEn; logic [`C-1:0][P.PLIC_NUM_SRC:1] intEn;
logic [`C-1:0][5:0] intClaim; // ID's are 6 bits if we stay within 63 sources logic [`C-1:0][5:0] intClaim; // ID's are 6 bits if we stay within 63 sources
logic [`C-1:0][7:1][`N:1] irqMatrix; logic [`C-1:0][7:1][P.PLIC_NUM_SRC:1] irqMatrix;
logic [`C-1:0][7:1] priorities_with_irqs; logic [`C-1:0][7:1] priorities_with_irqs;
logic [`C-1:0][7:1] max_priority_with_irqs; logic [`C-1:0][7:1] max_priority_with_irqs;
logic [`C-1:0][`N:1] irqs_at_max_priority; logic [`C-1:0][P.PLIC_NUM_SRC:1] irqs_at_max_priority;
logic [`C-1:0][7:1] threshMask; logic [`C-1:0][7:1] threshMask;
logic [P.PLIC_NUM_SRC-1:0] One;
// ======= // =======
// AHB I/O // AHB I/O
@ -81,6 +81,7 @@ module plic_apb import cvw::*; #(parameter cvw_t P) (
assign memread = ~PWRITE & PSEL; // read at start of access phase. PENABLE hasn't set up before this assign memread = ~PWRITE & PSEL; // read at start of access phase. PENABLE hasn't set up before this
assign PREADY = 1'b1; // PLIC never takes >1 cycle to respond assign PREADY = 1'b1; // PLIC never takes >1 cycle to respond
assign entry = {PADDR[23:2],2'b0}; assign entry = {PADDR[23:2],2'b0};
assign One[P.PLIC_NUM_SRC-1:1] = '0; assign One[0] = 1'b1; // Vivado does not like this as a single assignment.
// account for subword read/write circuitry // account for subword read/write circuitry
// -- Note PLIC registers are 32 bits no matter what; access them with LW SW. // -- Note PLIC registers are 32 bits no matter what; access them with LW SW.
@ -92,66 +93,67 @@ module plic_apb import cvw::*; #(parameter cvw_t P) (
assign Din = PWDATA[31:0]; assign Din = PWDATA[31:0];
end end
if (P.PLIC_NUM_SRC_LT_32) `define PLIC_NUM_SRC_LT_32
// ================== // ==================
// Register Interface // Register Interface
// ================== // ==================
localparam PLIC_NUM_SRC_MIN_32 = P.PLIC_NUM_SRC < 32 ? P.PLIC_NUM_SRC : 31;
always @(posedge PCLK) begin always @(posedge PCLK) begin
// resetting // resetting
if (~PRESETn) begin if (~PRESETn) begin
intPriority <= #1 {`N{3'b0}}; intPriority <= #1 '0;
intEn <= #1 {2*`N{1'b0}}; intEn <= #1 '0;
intThreshold <= #1 {2{3'b0}}; intThreshold <= #1 '0;
intInProgress <= #1 {`N{1'b0}}; intInProgress <= #1 '0;
// writing // writing
end else begin end else begin
if (memwrite) if (memwrite)
casez(entry) casez(entry)
24'h0000??: intPriority[entry[7:2]] <= #1 Din[2:0]; 24'h0000??: intPriority[entry[7:2]] <= #1 Din[2:0];
`ifdef PLIC_NUM_SRC_LT_32 // eventually switch to a generate for loop so as to deprecate PLIC_NUM_SRC_LT_32 and allow up to 1023 sources 24'h002000: intEn[0][PLIC_NUM_SRC_MIN_32:1] <= #1 Din[PLIC_NUM_SRC_MIN_32:1];
24'h002000: intEn[0][`N:1] <= #1 Din[`N:1]; 24'h002080: intEn[1][PLIC_NUM_SRC_MIN_32:1] <= #1 Din[PLIC_NUM_SRC_MIN_32:1];
24'h002080: intEn[1][`N:1] <= #1 Din[`N:1];
`endif // verilator lint_off SELRANGE
`ifndef PLIC_NUM_SRC_LT_32 // *** RT: Long term we want to factor out these variable number of registers as a generate loop
24'h002000: intEn[0][31:1] <= #1 Din[31:1]; // I think this won't work as a case statement.
24'h002004: intEn[0][`N:32] <= #1 Din[31:0]; 24'h002004: if (P.PLIC_NUM_SRC >= 32) intEn[0][P.PLIC_NUM_SRC:32] <= #1 Din[P.PLIC_NUM_SRC-32:0];
24'h002080: intEn[1][31:1] <= #1 Din[31:1]; 24'h002084: if (P.PLIC_NUM_SRC >= 32) intEn[1][P.PLIC_NUM_SRC:32] <= #1 Din[P.PLIC_NUM_SRC-32:0];
24'h002084: intEn[1][`N:32] <= #1 Din[31:0]; // verilator lint_on SELRANGE
`endif
24'h200000: intThreshold[0] <= #1 Din[2:0]; 24'h200000: intThreshold[0] <= #1 Din[2:0];
24'h200004: intInProgress <= #1 intInProgress & ~({{`N-1{1'b0}}, 1'b1} << (Din[5:0]-1)); // lower "InProgress" to signify completion 24'h200004: intInProgress <= #1 intInProgress & ~(One << (Din[5:0]-1)); // lower "InProgress" to signify completion
24'h201000: intThreshold[1] <= #1 Din[2:0]; 24'h201000: intThreshold[1] <= #1 Din[2:0];
24'h201004: intInProgress <= #1 intInProgress & ~({{`N-1{1'b0}}, 1'b1} << (Din[5:0]-1)); // lower "InProgress" to signify completion 24'h201004: intInProgress <= #1 intInProgress & ~(One << (Din[5:0]-1)); // lower "InProgress" to signify completion
endcase endcase
// Read synchronously because a read can have side effect of changing intInProgress // Read synchronously because a read can have side effect of changing intInProgress
if (memread) begin if (memread) begin
casez(entry) casez(entry)
24'h000000: Dout <= #1 32'b0; // there is no intPriority[0] 24'h000000: Dout <= #1 32'b0; // there is no intPriority[0]
24'h0000??: Dout <= #1 {29'b0,intPriority[entry[7:2]]}; 24'h0000??: Dout <= #1 {29'b0,intPriority[entry[7:2]]};
`ifdef PLIC_NUM_SRC_LT_32 24'h001000: Dout <= #1 {{(31-PLIC_NUM_SRC_MIN_32){1'b0}},intPending[PLIC_NUM_SRC_MIN_32:1],1'b0};
24'h001000: Dout <= #1 {{(31-`N){1'b0}},intPending,1'b0}; 24'h002000: Dout <= #1 {{(31-PLIC_NUM_SRC_MIN_32){1'b0}},intEn[0][PLIC_NUM_SRC_MIN_32:1],1'b0};
24'h002000: Dout <= #1 {{(31-`N){1'b0}},intEn[0],1'b0};
24'h002080: Dout <= #1 {{(31-`N){1'b0}},intEn[1],1'b0}; // verilator lint_off SELRANGE
`endif // verilator lint_off WIDTHTRUNC
`ifndef PLIC_NUM_SRC_LT_32 24'h001004: if (P.PLIC_NUM_SRC >= 32) Dout <= #1 {{(63-P.PLIC_NUM_SRC){1'b0}},intPending[P.PLIC_NUM_SRC:32]};
24'h001000: Dout <= #1 {intPending[31:1],1'b0}; 24'h002004: if (P.PLIC_NUM_SRC >= 32) Dout <= #1 {{(63-P.PLIC_NUM_SRC){1'b0}},intEn[0][P.PLIC_NUM_SRC:32]};
24'h001004: Dout <= #1 {{(63-`N){1'b0}},intPending[`N:32]}; // verilator lint_on SELRANGE
24'h002000: Dout <= #1 {intEn[0][31:1],1'b0}; // verilator lint_on WIDTHTRUNC
24'h002004: Dout <= #1 {{(63-`N){1'b0}},intEn[0][`N:32]};
24'h002080: Dout <= #1 {intEn[0][31:1],1'b0}; 24'h002080: Dout <= #1 {{(31-PLIC_NUM_SRC_MIN_32){1'b0}},intEn[1][PLIC_NUM_SRC_MIN_32:1],1'b0};
24'h002084: Dout <= #1 {{(63-`N){1'b0}},intEn[1][`N:32]}; // verilator lint_off SELRANGE
`endif // verilator lint_off WIDTHTRUNC
24'h002084: if (P.PLIC_NUM_SRC >= 32) Dout <= #1 {{(63-P.PLIC_NUM_SRC){1'b0}},intEn[1][P.PLIC_NUM_SRC:32]};
// verilator lint_on SELRANGE
// verilator lint_on WIDTHTRUNC
24'h200000: Dout <= #1 {29'b0,intThreshold[0]}; 24'h200000: Dout <= #1 {29'b0,intThreshold[0]};
24'h200004: begin 24'h200004: begin
Dout <= #1 {26'b0,intClaim[0]}; Dout <= #1 {26'b0,intClaim[0]};
intInProgress <= #1 intInProgress | ({{`N-1{1'b0}}, 1'b1} << (intClaim[0]-1)); // claimed requests are currently in progress of being serviced until they are completed intInProgress <= #1 intInProgress | (One << (intClaim[0]-1)); // claimed requests are currently in progress of being serviced until they are completed
end end
24'h201000: Dout <= #1 {29'b0,intThreshold[1]}; 24'h201000: Dout <= #1 {29'b0,intThreshold[1]};
24'h201004: begin 24'h201004: begin
Dout <= #1 {26'b0,intClaim[1]}; Dout <= #1 {26'b0,intClaim[1]};
intInProgress <= #1 intInProgress | ({{`N-1{1'b0}}, 1'b1} << (intClaim[1]-1)); // claimed requests are currently in progress of being serviced until they are completed intInProgress <= #1 intInProgress | (One << (intClaim[1]-1)); // claimed requests are currently in progress of being serviced until they are completed
end end
default: Dout <= #1 32'h0; // invalid access default: Dout <= #1 32'h0; // invalid access
endcase endcase
@ -161,14 +163,14 @@ module plic_apb import cvw::*; #(parameter cvw_t P) (
// connect sources to requests // connect sources to requests
always_comb begin always_comb begin
requests = {`N{1'b0}}; requests = {P.PLIC_NUM_SRC{1'b0}};
if(P.PLIC_GPIO_ID != 0) requests[P.PLIC_GPIO_ID] = GPIOIntr; if(P.PLIC_GPIO_ID != 0) requests[P.PLIC_GPIO_ID] = GPIOIntr;
if(P.PLIC_UART_ID != 0) requests[P.PLIC_UART_ID] = UARTIntr; if(P.PLIC_UART_ID != 0) requests[P.PLIC_UART_ID] = UARTIntr;
end end
// pending interrupt request // pending interrupt request
assign nextIntPending = (intPending | requests) & ~intInProgress; assign nextIntPending = (intPending | requests) & ~intInProgress;
flopr #(`N) intPendingFlop(PCLK,~PRESETn,nextIntPending,intPending); flopr #(P.PLIC_NUM_SRC) intPendingFlop(PCLK,~PRESETn,nextIntPending,intPending);
// context-dependent signals // context-dependent signals
genvar ctx; genvar ctx;
@ -181,7 +183,7 @@ module plic_apb import cvw::*; #(parameter cvw_t P) (
// ("active" meaning it is enabled in context <ctx> and is pending) // ("active" meaning it is enabled in context <ctx> and is pending)
genvar src, pri; genvar src, pri;
for (pri=1; pri<=7; pri++) begin for (pri=1; pri<=7; pri++) begin
for (src=1; src<=`N; src++) begin for (src=1; src<=P.PLIC_NUM_SRC; src++) begin
assign irqMatrix[ctx][pri][src] = (intPriority[src]==pri) & intPending[src] & intEn[ctx][src]; assign irqMatrix[ctx][pri][src] = (intPriority[src]==pri) & intPending[src] & intEn[ctx][src];
end end
end end
@ -210,14 +212,14 @@ module plic_apb import cvw::*; #(parameter cvw_t P) (
// of the sources at the highest priority level that has active requests, // of the sources at the highest priority level that has active requests,
// which sources have active requests? // which sources have active requests?
assign irqs_at_max_priority[ctx][`N:1] = assign irqs_at_max_priority[ctx][P.PLIC_NUM_SRC:1] =
({`N{max_priority_with_irqs[ctx][7]}} & irqMatrix[ctx][7]) | ({P.PLIC_NUM_SRC{max_priority_with_irqs[ctx][7]}} & irqMatrix[ctx][7]) |
({`N{max_priority_with_irqs[ctx][6]}} & irqMatrix[ctx][6]) | ({P.PLIC_NUM_SRC{max_priority_with_irqs[ctx][6]}} & irqMatrix[ctx][6]) |
({`N{max_priority_with_irqs[ctx][5]}} & irqMatrix[ctx][5]) | ({P.PLIC_NUM_SRC{max_priority_with_irqs[ctx][5]}} & irqMatrix[ctx][5]) |
({`N{max_priority_with_irqs[ctx][4]}} & irqMatrix[ctx][4]) | ({P.PLIC_NUM_SRC{max_priority_with_irqs[ctx][4]}} & irqMatrix[ctx][4]) |
({`N{max_priority_with_irqs[ctx][3]}} & irqMatrix[ctx][3]) | ({P.PLIC_NUM_SRC{max_priority_with_irqs[ctx][3]}} & irqMatrix[ctx][3]) |
({`N{max_priority_with_irqs[ctx][2]}} & irqMatrix[ctx][2]) | ({P.PLIC_NUM_SRC{max_priority_with_irqs[ctx][2]}} & irqMatrix[ctx][2]) |
({`N{max_priority_with_irqs[ctx][1]}} & irqMatrix[ctx][1]); ({P.PLIC_NUM_SRC{max_priority_with_irqs[ctx][1]}} & irqMatrix[ctx][1]);
// of the sources at the highest priority level that has active requests, // of the sources at the highest priority level that has active requests,
// choose the source with the lowest source ID to be the most urgent // choose the source with the lowest source ID to be the most urgent
@ -225,7 +227,7 @@ module plic_apb import cvw::*; #(parameter cvw_t P) (
integer k; integer k;
always_comb begin always_comb begin
intClaim[ctx] = 6'b0; intClaim[ctx] = 6'b0;
for (k=`N; k>0; k--) begin for (k=P.PLIC_NUM_SRC; k>0; k--) begin
if (irqs_at_max_priority[ctx][k]) intClaim[ctx] = k[5:0]; if (irqs_at_max_priority[ctx][k]) intClaim[ctx] = k[5:0];
end end
end end

11
src/wally/wallypipelinedcore.sv
View File

@ -78,6 +78,9 @@ module wallypipelinedcore import cvw::*; #(parameter cvw_t P) (
logic LoadStallD, StoreStallD, MDUStallD, CSRRdStallD; logic LoadStallD, StoreStallD, MDUStallD, CSRRdStallD;
logic SquashSCW; logic SquashSCW;
logic MDUActiveE; // Mul/Div instruction being executed logic MDUActiveE; // Mul/Div instruction being executed
logic [3:0] ENVCFG_CBE; // Cache Block operation enables
logic [3:0] CMOpM; // 1: cbo.inval; 2: cbo.flush; 4: cbo.clean; 8: cbo.zero
logic IFUPrefetchE, LSUPrefetchM; // instruction / data prefetch hints
// floating point unit signals // floating point unit signals
logic [2:0] FRM_REGW; logic [2:0] FRM_REGW;
@ -188,10 +191,10 @@ module wallypipelinedcore import cvw::*; #(parameter cvw_t P) (
// integer execution unit: integer register file, datapath and controller // integer execution unit: integer register file, datapath and controller
ieu #(P) ieu(.clk, .reset, ieu #(P) ieu(.clk, .reset,
// Decode Stage interface // Decode Stage interface
.InstrD, .IllegalIEUFPUInstrD, .IllegalBaseInstrD, .InstrD, .STATUS_FS, .ENVCFG_CBE, .IllegalIEUFPUInstrD, .IllegalBaseInstrD,
// Execute Stage interface // Execute Stage interface
.PCE, .PCLinkE, .FWriteIntE, .FCvtIntE, .IEUAdrE, .IntDivE, .W64E, .PCE, .PCLinkE, .FWriteIntE, .FCvtIntE, .IEUAdrE, .IntDivE, .W64E,
.Funct3E, .ForwardedSrcAE, .ForwardedSrcBE, .MDUActiveE, .Funct3E, .ForwardedSrcAE, .ForwardedSrcBE, .MDUActiveE, .CMOpM, .IFUPrefetchE, .LSUPrefetchM,
// Memory stage interface // Memory stage interface
.SquashSCW, // from LSU .SquashSCW, // from LSU
.MemRWM, // read/write control goes to LSU .MemRWM, // read/write control goes to LSU
@ -215,7 +218,7 @@ module wallypipelinedcore import cvw::*; #(parameter cvw_t P) (
.MemRWM, .Funct3M, .Funct7M(InstrM[31:25]), .AtomicM, .MemRWM, .Funct3M, .Funct7M(InstrM[31:25]), .AtomicM,
.CommittedM, .DCacheMiss, .DCacheAccess, .SquashSCW, .CommittedM, .DCacheMiss, .DCacheAccess, .SquashSCW,
.FpLoadStoreM, .FWriteDataM, .IEUAdrE, .IEUAdrM, .WriteDataM, .FpLoadStoreM, .FWriteDataM, .IEUAdrE, .IEUAdrM, .WriteDataM,
.ReadDataW, .FlushDCacheM, .ReadDataW, .FlushDCacheM, .CMOpM, .LSUPrefetchM,
// connected to ahb (all stay the same) // connected to ahb (all stay the same)
.LSUHADDR, .HRDATA, .LSUHWDATA, .LSUHWSTRB, .LSUHSIZE, .LSUHADDR, .HRDATA, .LSUHWDATA, .LSUHWSTRB, .LSUHSIZE,
.LSUHBURST, .LSUHTRANS, .LSUHWRITE, .LSUHREADY, .LSUHBURST, .LSUHTRANS, .LSUHWRITE, .LSUHREADY,
@ -291,7 +294,7 @@ module wallypipelinedcore import cvw::*; #(parameter cvw_t P) (
.PrivilegeModeW, .SATP_REGW, .PrivilegeModeW, .SATP_REGW,
.STATUS_MXR, .STATUS_SUM, .STATUS_MPRV, .STATUS_MPP, .STATUS_FS, .STATUS_MXR, .STATUS_SUM, .STATUS_MPRV, .STATUS_MPP, .STATUS_FS,
.PMPCFG_ARRAY_REGW, .PMPADDR_ARRAY_REGW, .PMPCFG_ARRAY_REGW, .PMPADDR_ARRAY_REGW,
.FRM_REGW,.BreakpointFaultM, .EcallFaultM, .wfiM, .IntPendingM, .BigEndianM); .FRM_REGW, .ENVCFG_CBE, .BreakpointFaultM, .EcallFaultM, .wfiM, .IntPendingM, .BigEndianM);
end else begin end else begin
assign CSRReadValW = 0; assign CSRReadValW = 0;
assign UnalignedPCNextF = PC2NextF; assign UnalignedPCNextF = PC2NextF;

16
testbench/common/instrNameDecTB.sv
View File

@ -30,13 +30,14 @@ module instrNameDecTB(
logic [2:0] funct3; logic [2:0] funct3;
logic [6:0] funct7; logic [6:0] funct7;
logic [11:0] imm; logic [11:0] imm;
logic [4:0] rs2; logic [4:0] rs2, rd;
assign op = instr[6:0]; assign op = instr[6:0];
assign funct3 = instr[14:12]; assign funct3 = instr[14:12];
assign funct7 = instr[31:25]; assign funct7 = instr[31:25];
assign imm = instr[31:20]; assign imm = instr[31:20];
assign rs2 = instr[24:20]; assign rs2 = instr[24:20];
assign rd = instr[11:7];
// it would be nice to add the operands to the name // it would be nice to add the operands to the name
// create another variable called decoded // create another variable called decoded
@ -77,7 +78,10 @@ module instrNameDecTB(
else if (funct7[6:1] == 6'b010010) name = "BEXTI"; else if (funct7[6:1] == 6'b010010) name = "BEXTI";
else if (funct7 == 7'b0010100 & rs2 == 5'b00111) name = "ORC.B"; else if (funct7 == 7'b0010100 & rs2 == 5'b00111) name = "ORC.B";
else name = "ILLEGAL"; else name = "ILLEGAL";
10'b0010011_110: name = "ORI"; 10'b0010011_110: if (rd == 0 & rs2 == 0) name = "PREFETCH.I";
else if (rd == 0 & rs2 == 1) name = "PREFETCH.R";
else if (rd == 0 & rs2 == 3) name = "PREFETCH.W";
else name = "ORI";
10'b0010011_111: name = "ANDI"; 10'b0010011_111: name = "ANDI";
10'b0010111_???: name = "AUIPC"; 10'b0010111_???: name = "AUIPC";
10'b0100011_000: name = "SB"; 10'b0100011_000: name = "SB";
@ -215,7 +219,13 @@ module instrNameDecTB(
else if (funct7[6:2] == 5'b11000) name = "AMOMINU.D"; else if (funct7[6:2] == 5'b11000) name = "AMOMINU.D";
else if (funct7[6:2] == 5'b11100) name = "AMOMAXU.D"; else if (funct7[6:2] == 5'b11100) name = "AMOMAXU.D";
else name = "ILLEGAL"; else name = "ILLEGAL";
10'b0001111_???: name = "FENCE"; 10'b0001111_000: name = "FENCE";
10'b0001111_001: name = "FENCE.I";
10'b0001111_010: if (instr[31:20] == 12'd0) name = "CBO.INVAL";
else if (instr[31:20] == 12'd1) name = "CBO.CLEAN";
else if (instr[31:20] == 12'd2) name = "CBO.FLUSH";
else if (instr[31:20] == 12'd4) name = "CBO.ZERO";
else name = "ILLEGAL";
10'b1000011_???: name = "FMADD"; 10'b1000011_???: name = "FMADD";
10'b1000111_???: name = "FMSUB"; 10'b1000111_???: name = "FMSUB";
10'b1001011_???: name = "FNMSUB"; 10'b1001011_???: name = "FNMSUB";

45
testbench/common/ramxdetector.sv Normal file
View File

@ -0,0 +1,45 @@
///////////////////////////////////////////
// ramxdetector.sv
//
// Written: David_Harris@hmc.edu
// Modified: 2 July 2023
//
// Purpose: Detects if the processor is attempting to read unitialized RAM
//
// A component of the Wally configurable RISC-V project.
//
// Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
//
// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
//
// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file
// except in compliance with the License, or, at your option, the Apache License version 2.0. You
// may obtain a copy of the License at
//
// https://solderpad.org/licenses/SHL-2.1/
//
// Unless required by applicable law or agreed to in writing, any work distributed under the
// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
// either express or implied. See the License for the specific language governing permissions
// and limitations under the License.
////////////////////////////////////////////////////////////////////////////////////////////////
module ramxdetector #(parameter XLEN, LLEN) (
input logic clk,
input logic MemReadM,
input logic LSULoadAccessFaultM,
input logic [LLEN-1:0] ReadDataM,
input logic [XLEN-1:0] PCM,
input logic [31:0] InstrM,
input logic [XLEN-1:0] IEUAdrM,
input string InstrMName
);
always_ff @(posedge clk)
if (MemReadM & ~LSULoadAccessFaultM & (ReadDataM === 'bx)) begin
$display("WARNING: Attempting to read from unitialized RAM. Processor may go haywire if it uses x value. But this is normal in WALLY-mmu tests.");
$display(" PCM = %x InstrM = %x (%s), IEUAdrM = %x", PCM, InstrM, InstrMName, IEUAdrM);
//$stop;
end
endmodule

3
testbench/common/riscvassertions.sv
View File

@ -58,6 +58,9 @@ module riscvassertions import cvw::*; #(parameter cvw_t P);
assert ((P.ZMMUL_SUPPORTED == 0) || (P.M_SUPPORTED ==0)) else $error("At most one of ZMMUL_SUPPORTED and M_SUPPORTED can be enabled"); assert ((P.ZMMUL_SUPPORTED == 0) || (P.M_SUPPORTED ==0)) else $error("At most one of ZMMUL_SUPPORTED and M_SUPPORTED can be enabled");
assert ((P.ZICNTR_SUPPORTED == 0) || (P.ZICSR_SUPPORTED == 1)) else $error("ZICNTR_SUPPORTED requires ZICSR_SUPPORTED"); assert ((P.ZICNTR_SUPPORTED == 0) || (P.ZICSR_SUPPORTED == 1)) else $error("ZICNTR_SUPPORTED requires ZICSR_SUPPORTED");
assert ((P.ZIHPM_SUPPORTED == 0) || (P.ZICNTR_SUPPORTED == 1)) else $error("ZIPHM_SUPPORTED requires ZICNTR_SUPPORTED"); assert ((P.ZIHPM_SUPPORTED == 0) || (P.ZICNTR_SUPPORTED == 1)) else $error("ZIPHM_SUPPORTED requires ZICNTR_SUPPORTED");
assert ((P.ZICBOM_SUPPORTED == 0) || (P.DCACHE_SUPPORTED == 1)) else $error("ZICBOM required DCACHE_SUPPORTED");
assert ((P.ZICBOZ_SUPPORTED == 0) || (P.DCACHE_SUPPORTED == 1)) else $error("ZICBOZ required DCACHE_SUPPORTED");
assert ((P.ZICBOP_SUPPORTED == 0) || (P.DCACHE_SUPPORTED == 1)) else $error("ZICBOP required DCACHE_SUPPORTED");
end end
endmodule endmodule

7
testbench/testbench-fp.sv
View File

@ -121,6 +121,7 @@ module testbenchfp;
logic ResMatch; // Check if result match logic ResMatch; // Check if result match
logic FlagMatch; // Check if IEEE flags match logic FlagMatch; // Check if IEEE flags match
logic CheckNow; // Final check logic CheckNow; // Final check
logic FMAop; // Is this a FMA operation?
/////////////////////////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////////////////////////
@ -944,13 +945,15 @@ module testbenchfp;
assign ResMatch = ((Res === Ans) | NaNGood | (NaNGood === 1'bx)); assign ResMatch = ((Res === Ans) | NaNGood | (NaNGood === 1'bx));
assign FlagMatch = ((ResFlg === AnsFlg) | (AnsFlg === 5'bx)); assign FlagMatch = ((ResFlg === AnsFlg) | (AnsFlg === 5'bx));
assign divsqrtop = (OpCtrlVal == `SQRT_OPCTRL) | (OpCtrlVal == `DIV_OPCTRL); assign divsqrtop = (OpCtrlVal == `SQRT_OPCTRL) | (OpCtrlVal == `DIV_OPCTRL);
assign FMAop = (OpCtrlVal == `FMAUNIT);
assign DivDone = OldFDivBusyE & ~FDivBusyE; assign DivDone = OldFDivBusyE & ~FDivBusyE;
assign CheckNow = (DivDone | ~divsqrtop) & (UnitVal !== `CVTINTUNIT) & (UnitVal !== `CMPUNIT); // Maybe change OpCtrl but for now just look at TEST for fma test
assign CheckNow = ((DivDone | ~divsqrtop) | (TEST == "add" | TEST == "fma" | TEST == "sub")) & (UnitVal !== `CVTINTUNIT) & (UnitVal !== `CMPUNIT);
if (~(ResMatch & FlagMatch) & CheckNow) begin if (~(ResMatch & FlagMatch) & CheckNow) begin
errors += 1; errors += 1;
$display("\nError in %s", Tests[TestNum]);
$display("TestNum %d OpCtrl %d", TestNum, OpCtrl[TestNum]); $display("TestNum %d OpCtrl %d", TestNum, OpCtrl[TestNum]);
$display("Error in %s", Tests[TestNum]);
$display("inputs: %h %h %h\nSrcA: %h\n Res: %h %h\n Expected: %h %h", X, Y, Z, SrcA, Res, ResFlg, Ans, AnsFlg); $display("inputs: %h %h %h\nSrcA: %h\n Res: %h %h\n Expected: %h %h", X, Y, Z, SrcA, Res, ResFlg, Ans, AnsFlg);
$stop; $stop;
end end

24
testbench/testbench.sv
View File

@ -35,7 +35,7 @@ module testbench;
/* verilator lint_off WIDTHEXPAND */ /* verilator lint_off WIDTHEXPAND */
parameter DEBUG=0; parameter DEBUG=0;
parameter TEST="none"; parameter TEST="none";
parameter PrintHPMCounters=0; parameter PrintHPMCounters=1;
parameter BPRED_LOGGER=0; parameter BPRED_LOGGER=0;
parameter I_CACHE_ADDR_LOGGER=0; parameter I_CACHE_ADDR_LOGGER=0;
parameter D_CACHE_ADDR_LOGGER=0; parameter D_CACHE_ADDR_LOGGER=0;
@ -409,7 +409,20 @@ module testbench;
// Support logic // Support logic
//////////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////////
// Track names of instructions
string InstrFName, InstrDName, InstrEName, InstrMName, InstrWName;
logic [31:0] InstrW;
flopenr #(32) InstrWReg(clk, reset, ~dut.core.ieu.dp.StallW, dut.core.ifu.InstrM, InstrW);
instrTrackerTB it(clk, reset, dut.core.ieu.dp.FlushE,
dut.core.ifu.InstrRawF[31:0],
dut.core.ifu.InstrD, dut.core.ifu.InstrE,
dut.core.ifu.InstrM, InstrW,
InstrFName, InstrDName, InstrEName, InstrMName, InstrWName);
// watch for problems such as lockup, reading unitialized memory, bad configs
watchdog #(P.XLEN, 1000000) watchdog(.clk, .reset); // check if PCW is stuck watchdog #(P.XLEN, 1000000) watchdog(.clk, .reset); // check if PCW is stuck
ramxdetector #(P.XLEN, P.LLEN) ramxdetector(clk, dut.core.lsu.MemRWM[1], dut.core.lsu.LSULoadAccessFaultM, dut.core.lsu.ReadDataM,
dut.core.ifu.PCM, dut.core.ifu.InstrM, dut.core.lsu.IEUAdrM, InstrMName);
riscvassertions #(P) riscvassertions(); // check assertions for a legal configuration riscvassertions #(P) riscvassertions(); // check assertions for a legal configuration
loggers #(P, TEST, PrintHPMCounters, I_CACHE_ADDR_LOGGER, D_CACHE_ADDR_LOGGER, BPRED_LOGGER) loggers #(P, TEST, PrintHPMCounters, I_CACHE_ADDR_LOGGER, D_CACHE_ADDR_LOGGER, BPRED_LOGGER)
loggers (clk, reset, DCacheFlushStart, DCacheFlushDone, memfilename); loggers (clk, reset, DCacheFlushStart, DCacheFlushDone, memfilename);
@ -420,15 +433,6 @@ module testbench;
.clk(clk), .ProgramAddrMapFile(ProgramAddrMapFile), .ProgramLabelMapFile(ProgramLabelMapFile)); .clk(clk), .ProgramAddrMapFile(ProgramAddrMapFile), .ProgramLabelMapFile(ProgramLabelMapFile));
end end
// Track names of instructions
string InstrFName, InstrDName, InstrEName, InstrMName, InstrWName;
logic [31:0] InstrW;
flopenr #(32) InstrWReg(clk, reset, ~dut.core.ieu.dp.StallW, dut.core.ifu.InstrM, InstrW);
instrTrackerTB it(clk, reset, dut.core.ieu.dp.FlushE,
dut.core.ifu.InstrRawF[31:0],
dut.core.ifu.InstrD, dut.core.ifu.InstrE,
dut.core.ifu.InstrM, InstrW,
InstrFName, InstrDName, InstrEName, InstrMName, InstrWName);
// Termination condition // Termination condition
// terminate on a specific ECALL after li x3,1 for old Imperas tests, *** remove this when old imperas tests are removed // terminate on a specific ECALL after li x3,1 for old Imperas tests, *** remove this when old imperas tests are removed

4
testbench/tests.vh
View File

@ -2031,8 +2031,8 @@ string arch64zbs[] = '{
"rv32i_m/privilege/src/WALLY-mie-01.S", "rv32i_m/privilege/src/WALLY-mie-01.S",
"rv32i_m/privilege/src/WALLY-minfo-01.S", "rv32i_m/privilege/src/WALLY-minfo-01.S",
"rv32i_m/privilege/src/WALLY-misa-01.S", "rv32i_m/privilege/src/WALLY-misa-01.S",
// "rv32i_m/privilege/src/WALLY-mmu-sv32-01.S", // "rv32i_m/privilege/src/WALLY-mmu-sv32-01.S", // run this if SVADU_SUPPORTED = 0
"rv32i_m/privilege/src/WALLY-mmu-sv32-svadu-01.S", "rv32i_m/privilege/src/WALLY-mmu-sv32-svadu-01.S", // run this if SVADU_SUPPORTED = 1
"rv32i_m/privilege/src/WALLY-mtvec-01.S", "rv32i_m/privilege/src/WALLY-mtvec-01.S",
"rv32i_m/privilege/src/WALLY-pma-01.S", "rv32i_m/privilege/src/WALLY-pma-01.S",
"rv32i_m/privilege/src/WALLY-pmp-01.S", "rv32i_m/privilege/src/WALLY-pmp-01.S",