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[cfg] Add PMP parameters to ibex_config.yaml

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Also renames configs as part of this as they start to get unweildy if
all features get described in the config name.
This commit is contained in:
Greg Chadwick 2020-05-14 09:40:09 +01:00
parent 9bd3350bb3
commit 00b46d9abe
10 changed files with 201 additions and 82 deletions
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2
Makefile
View file

@ -1,4 +1,4 @@
IBEX_CONFIG ?= small-3cmult
IBEX_CONFIG ?= small
FUSESOC_CONFIG_OPTS = $(shell ./util/ibex_config.py $(IBEX_CONFIG) fusesoc_opts)

6
azure-pipelines.yml
View file

@ -154,6 +154,6 @@ jobs:
- template : ci/ibex-rtl-ci-steps.yml
parameters:
ibex_configs:
- small-3cmult
- experimental-maxperf-1cmult
- experimental-maxperf-bm-1cmult
- small
- experimental-maxperf-pmp
- experimental-maxperf-pmp-bm

41
dv/riscv_compliance/ibex_riscv_compliance.core
View file

@ -28,32 +28,60 @@ parameters:
datatype: int
paramtype: vlogparam
default: 1
description: Enable the M ISA extension (hardware multiply/divide)
description: "Enable the M ISA extension (hardware multiply/divide) [0/1]"
RV32E:
datatype: int
paramtype: vlogparam
default: 0
description: Enable the E ISA extension (reduced register set)
description: "Enable the E ISA extension (reduced register set) [0/1]"
RV32B:
datatype: int
paramtype: vlogparam
default: 0
description: Enable the B ISA extension (bit manipulation EXPERIMENTAL)
description: "Enable the B ISA extension (bit manipulation EXPERIMENTAL) [0/1]"
SRAM_INIT_FILE:
datatype: str
paramtype: vlogdefine
description: "Path to a vmem file to initialize the RAM with"
MultiplierImplementation:
datatype: str
paramtype: vlogparam
description: "Multiplier implementation. Valid values: fast, slow, single-cycle"
default: "fast"
BranchTargetALU:
datatype: int
paramtype: vlogparam
default: 0
description: Enables seperate branch target ALU (increasing branch performance EXPERIMENTAL)
description: "Enables seperate branch target ALU (increasing branch performance EXPERIMENTAL)"
WritebackStage:
datatype: int
paramtype: vlogparam
default: 0
description: Enables third pipeline stage (EXPERIMENTAL)
description: "Enables third pipeline stage (EXPERIMENTAL)"
PMPEnable:
datatype: int
default: 0
paramtype: vlogparam
description: "Enable PMP"
PMPGranularity:
datatype: int
default: 0
paramtype: vlogparam
description: "Granularity of NAPOT range, 0 = 4 byte, 1 = byte, 2 = 16 byte, 3 = 32 byte etc"
PMPNumRegions:
datatype: int
default: 0
paramtype: vlogparam
description: "Number of PMP regions"
targets:
sim:
@ -68,6 +96,9 @@ targets:
- MultiplierImplementation
- BranchTargetALU
- WritebackStage
- PMPEnable
- PMPGranularity
- PMPNumRegions
toplevel: ibex_riscv_compliance
tools:
verilator:

12
dv/riscv_compliance/rtl/ibex_riscv_compliance.sv
View file

@ -15,6 +15,9 @@ module ibex_riscv_compliance (
input IO_RST_N
);
parameter bit PMPEnable = 1'b0;
parameter int unsigned PMPGranularity = 0;
parameter int unsigned PMPNumRegions = 4;
parameter bit RV32E = 1'b0;
parameter bit RV32M = 1'b1;
parameter bit RV32B = 1'b0;
@ -105,14 +108,17 @@ module ibex_riscv_compliance (
);
ibex_core_tracing #(
.DmHaltAddr(32'h00000000),
.DmExceptionAddr(32'h00000000),
.PMPEnable (PMPEnable ),
.PMPGranularity (PMPGranularity ),
.PMPNumRegions (PMPNumRegions ),
.RV32E (RV32E ),
.RV32M (RV32M ),
.RV32B (RV32B ),
.MultiplierImplementation (MultiplierImplementation),
.BranchTargetALU (BranchTargetALU ),
.WritebackStage(WritebackStage)
.WritebackStage (WritebackStage ),
.DmHaltAddr (32'h00000000 ),
.DmExceptionAddr (32'h00000000 )
) u_core (
.clk_i (clk_sys ),
.rst_ni (rst_sys_n ),

39
examples/simple_system/ibex_simple_system.core
View file

@ -27,36 +27,60 @@ parameters:
datatype: int
paramtype: vlogparam
default: 1
description: Enable the M ISA extension (hardware multiply/divide) [0/1]
description: "Enable the M ISA extension (hardware multiply/divide) [0/1]"
RV32E:
datatype: int
paramtype: vlogparam
default: 0
description: Enable the E ISA extension (reduced register set) [0/1]
description: "Enable the E ISA extension (reduced register set) [0/1]"
RV32B:
datatype: int
paramtype: vlogparam
default: 0
description: Enable the B ISA extension (bit manipulation EXPERIMENTAL) [0/1]
description: "Enable the B ISA extension (bit manipulation EXPERIMENTAL) [0/1]"
SRAM_INIT_FILE:
datatype: str
paramtype: vlogdefine
description: Path to a vmem file to initialize the RAM with
description: "Path to a vmem file to initialize the RAM with"
MultiplierImplementation:
datatype: str
paramtype: vlogparam
description: "Multiplier implementation. Valid values: fast, slow, single-cycle"
default: "fast"
BranchTargetALU:
datatype: int
paramtype: vlogparam
default: 0
description: Enables seperate branch target ALU (increasing branch performance EXPERIMENTAL)
description: "Enables seperate branch target ALU (increasing branch performance EXPERIMENTAL)"
WritebackStage:
datatype: int
paramtype: vlogparam
default: 0
description: Enables third pipeline stage (EXPERIMENTAL)
description: "Enables third pipeline stage (EXPERIMENTAL)"
PMPEnable:
datatype: int
default: 0
paramtype: vlogparam
description: "Enable PMP"
PMPGranularity:
datatype: int
default: 0
paramtype: vlogparam
description: "Granularity of NAPOT range, 0 = 4 byte, 1 = byte, 2 = 16 byte, 3 = 32 byte etc"
PMPNumRegions:
datatype: int
default: 0
paramtype: vlogparam
description: "Number of PMP regions"
targets:
sim:
@ -71,6 +95,9 @@ targets:
- MultiplierImplementation
- BranchTargetALU
- WritebackStage
- PMPEnable
- PMPGranularity
- PMPNumRegions
- SRAM_INIT_FILE
toplevel: ibex_simple_system
tools:

12
examples/simple_system/rtl/ibex_simple_system.sv
View file

@ -19,6 +19,9 @@ module ibex_simple_system (
input IO_RST_N
);
parameter bit PMPEnable = 1'b0;
parameter int unsigned PMPGranularity = 0;
parameter int unsigned PMPNumRegions = 4;
parameter bit RV32E = 1'b0;
parameter bit RV32M = 1'b1;
parameter bit RV32B = 1'b0;
@ -138,15 +141,18 @@ module ibex_simple_system (
);
ibex_core_tracing #(
.PMPEnable ( PMPEnable ),
.PMPGranularity ( PMPGranularity ),
.PMPNumRegions ( PMPNumRegions ),
.MHPMCounterNum ( 29 ),
.DmHaltAddr ( 32'h00100000 ),
.DmExceptionAddr ( 32'h00100000 ),
.RV32E ( RV32E ),
.RV32M ( RV32M ),
.RV32B ( RV32B ),
.BranchTargetALU ( BranchTargetALU ),
.WritebackStage ( WritebackStage ),
.MultiplierImplementation ( MultiplierImplementation )
.MultiplierImplementation ( MultiplierImplementation ),
.DmHaltAddr ( 32'h00100000 ),
.DmExceptionAddr ( 32'h00100000 )
) u_core (
.clk_i (clk_sys),
.rst_ni (rst_sys_n),

19
ibex_configs.yaml
View file

@ -7,13 +7,16 @@
# Two-stage pipeline without additional branch target ALU and 3 cycle multiplier
# (4 cycles for mulh), resulting in 2 stall cycles for mul (3 for mulh)
small-3cmult:
small:
RV32E : 0
RV32M : 1
RV32B : 0
BranchTargetALU : 0
WritebackStage : 0
MultiplierImplementation : "fast"
PMPEnable : 0
PMPGranularity : 0
PMPNumRegions : 4
# ===============================
# * EXPERIMENTAL CONFIGURATIONS *
@ -21,20 +24,26 @@ small-3cmult:
# Three-stage pipeline with additional branch traget ALU and 1 cycle multiplier
# (2 cycles for mulh) so mul does not stall (mulh stall 1 cycles). This is the
# maximum performance configuration.
experimental-maxperf-1cmult:
# maximum performance configuration. PMP is enabled with 16 regions.
experimental-maxperf-pmp:
RV32E : 0
RV32M : 1
RV32B : 0
BranchTargetALU : 1
WritebackStage : 1
MultiplierImplementation : "single-cycle"
PMPEnable : 1
PMPGranularity : 0
PMPNumRegions : 16
# maxpref-1cmult config above with bitmanip extension
experimental-maxperf-bm-1cmult:
# experimental-maxperf-pmp config above with bitmanip extension
experimental-maxperf-pmp-bm:
RV32E : 0
RV32M : 1
RV32B : 1
BranchTargetALU : 1
WritebackStage : 1
MultiplierImplementation : "single-cycle"
PMPEnable : 1
PMPGranularity : 0
PMPNumRegions : 16

18
ibex_core.core
View file

@ -108,6 +108,24 @@ parameters:
paramtype: vlogparam
description: "Enables security hardening features (EXPERIMENTAL) [0/1]"
PMPEnable:
datatype: int
default: 0
paramtype: vlogparam
description: "Enable PMP"
PMPGranularity:
datatype: int
default: 0
paramtype: vlogparam
description: "Granularity of NAPOT range, 0 = 4 byte, 1 = byte, 2 = 16 byte, 3 = 32 byte etc"
PMPNumRegions:
datatype: int
default: 0
paramtype: vlogparam
description: "Number of PMP regions"
targets:
default:
filesets:

21
ibex_core_tracing.core
View file

@ -83,6 +83,24 @@ parameters:
paramtype: vlogparam
description: "Enables security hardening features (EXPERIMENTAL) [0/1]"
PMPEnable:
datatype: int
default: 0
paramtype: vlogparam
description: "Enable PMP"
PMPGranularity:
datatype: int
default: 0
paramtype: vlogparam
description: "Granularity of NAPOT range, 0 = 4 byte, 1 = byte, 2 = 16 byte, 3 = 32 byte etc"
PMPNumRegions:
datatype: int
default: 0
paramtype: vlogparam
description: "Number of PMP regions"
targets:
default:
filesets:
@ -108,6 +126,9 @@ targets:
- WritebackStage
- MultiplierImplementation
- SecureIbex
- PMPEnable
- PMPGranularity
- PMPNumRegions
default_tool: verilator
toplevel: ibex_core_tracing
tools:

1
lint/verilator_waiver.vlt
View file

@ -20,6 +20,7 @@ lint_off -rule WIDTH -file "*/rtl/ibex_core_tracing.sv" -match "*'RV32B'*"
lint_off -rule WIDTH -file "*/rtl/ibex_core_tracing.sv" -match "*'BranchTargetALU'*"
lint_off -rule WIDTH -file "*/rtl/ibex_core_tracing.sv" -match "*'WritebackStage'*"
lint_off -rule WIDTH -file "*/rtl/ibex_core_tracing.sv" -match "*'SecureIbex'*"
lint_off -rule WIDTH -file "*/rtl/ibex_core_tracing.sv" -match "*'PMPEnable'*"
// Filename 'ibex_register_file_ff' does not match MODULE name: ibex_register_file
// ibex_register_file_ff and ibex_register_file_latch provide two