forked from lowRISC/ibex
-
Notifications
You must be signed in to change notification settings - Fork 0
/
ibex_configs.yaml
122 lines (112 loc) · 4.44 KB
/
ibex_configs.yaml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
# Copyright lowRISC contributors.
# Licensed under the Apache License, Version 2.0, see LICENSE for details.
# SPDX-License-Identifier: Apache-2.0
# Ibex configurations files, holds the parameter sets that are tested under CI.
# Each configuration must specify the same set of parameters
# 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:
RV32E : 0
RV32M : "ibex_pkg::RV32MFast"
RV32B : "ibex_pkg::RV32BNone"
RegFile : "ibex_pkg::RegFileFF"
BranchTargetALU : 0
WritebackStage : 0
ICache : 0
ICacheECC : 0
BranchPredictor : 0
PMPEnable : 0
PMPGranularity : 0
PMPNumRegions : 4
# ===============================
# * EXPERIMENTAL CONFIGURATIONS *
# ===============================
# 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:
RV32E : 0
RV32M : "ibex_pkg::RV32MSingleCycle"
RV32B : "ibex_pkg::RV32BNone"
RegFile : "ibex_pkg::RegFileFF"
BranchTargetALU : 1
WritebackStage : 1
ICache : 0
ICacheECC : 0
BranchPredictor : 0
PMPEnable : 0
PMPGranularity : 0
PMPNumRegions : 4
# experimental-maxperf config above plus PMP enabled with 16 regions.
experimental-maxperf-pmp:
RV32E : 0
RV32M : "ibex_pkg::RV32MSingleCycle"
RV32B : "ibex_pkg::RV32BNone"
RegFile : "ibex_pkg::RegFileFF"
BranchTargetALU : 1
WritebackStage : 1
ICache : 0
ICacheECC : 0
BranchPredictor : 0
PMPEnable : 1
PMPGranularity : 0
PMPNumRegions : 16
# experimental-maxperf-pmp config above with balanced bitmanip extension
experimental-maxperf-pmp-bmbalanced:
RV32E : 0
RV32M : "ibex_pkg::RV32MSingleCycle"
RV32B : "ibex_pkg::RV32BBalanced"
RegFile : "ibex_pkg::RegFileFF"
BranchTargetALU : 1
WritebackStage : 1
ICache : 0
ICacheECC : 0
BranchPredictor : 0
PMPEnable : 1
PMPGranularity : 0
PMPNumRegions : 16
# experimental-maxperf-pmp config above with full bitmanip extension
experimental-maxperf-pmp-bmfull:
RV32E : 0
RV32M : "ibex_pkg::RV32MSingleCycle"
RV32B : "ibex_pkg::RV32BFull"
RegFile : "ibex_pkg::RegFileFF"
BranchTargetALU : 1
WritebackStage : 1
ICache : 0
ICacheECC : 0
BranchPredictor : 0
PMPEnable : 1
PMPGranularity : 0
PMPNumRegions : 16
# experimental-maxperf-pmp-bmfull config above with icache enabled
experimental-maxperf-pmp-bmfull-icache:
RV32E : 0
RV32M : "ibex_pkg::RV32MSingleCycle"
RV32B : "ibex_pkg::RV32BFull"
RegFile : "ibex_pkg::RegFileFF"
BranchTargetALU : 1
WritebackStage : 1
ICache : 1
ICacheECC : 1
BranchPredictor : 0
PMPEnable : 1
PMPGranularity : 0
PMPNumRegions : 16
# experimental-maxperf with branch predictor switched on. This exists to allow
# easy use of Ibex with the branch predictor in particular for CI runs. The
# branch predictor will be enabled in all the 'maxperf' configs after further
# development.
experimental-branch-predictor:
RV32E : 0
RV32M : "ibex_pkg::RV32MSingleCycle"
RV32B : "ibex_pkg::RV32BNone"
RegFile : "ibex_pkg::RegFileFF"
BranchTargetALU : 1
WritebackStage : 1
ICache : 0
ICacheECC : 0
BranchPredictor : 1
PMPEnable : 0
PMPGranularity : 0
PMPNumRegions : 4