Xavi/cvw
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189 Commits

Author SHA1 Message Date
Kevin Kim
7651d41c90 reverted backing to working version 2023-03-07 00:29:58 -08:00
Kevin Kim
8c20d67659 reverted to working version 2023-03-07 00:28:07 -08:00
David Harris
4fd461e520 Fixed bug about rv64 shifts only using 6 bits of funct7 2023-03-06 13:10:51 -08:00
David Harris
94dd39795e Simplified decoder default to illegal instruction 2023-03-06 11:21:11 -08:00
David Harris
08f1ed8e53 More detailed decoding of load/store/branch/jump 2023-03-06 11:15:48 -08:00
David Harris
a01e0bd318 Improved decoding illegal instructions in controller 2023-03-06 11:02:42 -08:00
Kevin Kim
4a31ab1bc3 structural changes in cnt.sv 2023-03-06 06:44:15 -08:00
Kevin Kim
45697f050d formatting 2023-03-06 06:20:25 -08:00
Kevin Kim
c38a5d9151 formatting 
- reverted back to ALUResult signal in alu.sv
 2023-03-06 06:19:01 -08:00
Kevin Kim
474b69967a formatted files 2023-03-06 05:52:08 -08:00
Kevin Kim
288c7ad48c updated license header 2023-03-06 05:41:53 -08:00
Kevin Kim
cec1e89c78 bug fix 2023-03-05 15:20:48 -08:00
Kevin Kim
19beed7866 extend unit structural mux 2023-03-05 15:09:02 -08:00
Kevin Kim
7531bf1fd6 zbb result select mux structural 2023-03-05 14:57:30 -08:00
Kevin Kim
3656d42ac0 zbc input mux structural 2023-03-05 14:26:31 -08:00
Kevin Kim
869e812aa8 revA signals to cnt, zbb 2023-03-05 14:26:24 -08:00
Kevin Kim
0e6ea0ee60 ALU changes 
- added PreShiftAmt signal for shadd
- condinvB now muxes from B instead of mask
 2023-03-05 14:06:24 -08:00
Kevin Kim
3d5ee8d964 bug in bctrl 
- deleted the min/minu decoding for some reason.
 2023-03-04 23:56:33 -08:00
Kevin Kim
6ead150cb1 BSelect from OH encoding to Binary 2023-03-04 23:19:31 -08:00
Kevin Kim
4b1ee5a196 alu pre-shift 
-changed ALU pre shift logic to use a 2 bit shifter instead of mux
 2023-03-04 23:07:06 -08:00
Kevin Kim
b0f152de28 added python script 
-I've been using this python script to make quick changes to the bitmanip controller
 2023-03-04 22:54:32 -08:00
Kevin Kim
6295178073 removed rotate signal in datapath and instead packed into the new BALUControl Signal 
- BALUControl contains Rotate, Mask, PreShift signals to select from the respective generation muxes in the ALU
 2023-03-04 22:44:03 -08:00
Kevin Kim
b6dd855395 zbc result mux is now structural 2023-03-04 09:22:21 -08:00
Kevin Kim
6e52113208 Rotate signal now gets generated in bmu ctrl 2023-03-03 22:57:49 -08:00
Kevin Kim
18ab538a5e license comments 2023-03-03 21:52:34 -08:00
Kevin Kim
efce306aab removed redundant signals in controller 2023-03-03 21:52:25 -08:00
Kevin Kim
448e950eba b controller generates comparison signed flag and controller branch signed logic updated accordingly 2023-03-03 17:12:29 -08:00
Kevin Kim
0bb75132c6 sltD signal debug. Passes regression 2023-03-03 12:44:33 -08:00
Kevin Kim
d24f74dc4b sltD logic optimize 2023-03-03 12:35:40 -08:00
Kevin Kim
66b15b9163 Merge branch 'bctrlmigrate' of https://github.com/kipmacsaigoren/cvw into bctrlmigrate 2023-03-03 09:54:08 -08:00
Kevin Kim
0dee48fa5c
Merge branch 'openhwgroup:main' into bctrlmigrate 2023-03-03 09:53:59 -08:00
Kevin Kim
77c9114bcc removed outdated b-signals in controller 2023-03-03 08:45:42 -08:00
Kevin Kim
2b9a6aba91 comments to bctrl 2023-03-03 08:41:47 -08:00
Kevin Kim
11f165d1bb migrated B-subarith logic into b controller 2023-03-03 08:40:29 -08:00
Kevin Kim
b5a5f364e1 began subarith configurability optimization in controller 2023-03-03 08:27:11 -08:00
Ross Thompson
b19d51b6a2 Added fence counter. 2023-03-02 23:29:20 -06:00
Kevin Kim
f4b8968e12 bug fix, more elegant logic changes in controller 2023-03-02 16:00:56 -08:00
Kevin Kim
2a0c59d5a7 formatting 2023-03-02 15:28:43 -08:00
Kevin Kim
d0c486df54 removed main instruction decoder dependence on bmu controller 2023-03-02 15:28:33 -08:00
Kevin Kim
11a977ffe3 added bitmanip illegal instruction signal 2023-03-02 15:09:55 -08:00
Kevin Kim
b52208b539 zbc comments 2023-03-02 13:52:00 -08:00
Kevin Kim
2d7d143f6d formatted bmu decoder 2023-03-02 13:45:15 -08:00
Kevin Kim
1b222f91be moved ALUControlD into configurable block 2023-03-02 12:17:03 -08:00
Kevin Kim
1e1ecaafb1 moved SubArith and RegWriteE into configurable block 2023-03-02 12:15:57 -08:00
Kevin Kim
7dd4a2e975 added BRegWriteE signal 2023-03-02 12:15:22 -08:00
Kevin Kim
d40f3b2a1c rename shifternew to shifter 2023-03-02 11:45:32 -08:00
Kevin Kim
905373d53b zbc input select mux optimize 2023-03-02 11:43:05 -08:00
Kevin Kim
2bfbf051a5 zbc select mux optimization 2023-03-02 11:40:29 -08:00
Kevin Kim
44d40afca8 fixed controller lint, changed byte unit mux select name and input width 2023-03-02 11:36:12 -08:00
Kevin Kim
96995c5593 removed redundant zbs 2023-03-02 11:22:09 -08:00
Kip Macsai-Goren
9e52ede0cd Merge remote-tracking branch 'upstream/main' into bit-manip 2023-02-28 14:41:51 -08:00
Kevin Kim
036cad71c6 bitmanip decoder spits out regwrite, w64, and aluop signals [NEEDS DEBUG] 2023-02-28 12:09:35 -08:00
Kevin Kim
6835a635cc added BRegWrite, BW64, BALUOp signals to bctrl and controller 
-TODO: Main decode in bmuctrl must assert these 3 signals
 2023-02-28 11:54:10 -08:00
Kevin Kim
82059fba67 changed shifter source select signal name 2023-02-28 11:41:40 -08:00
Kevin Kim
30ef1ac9e3 rename result back to ALUResult in ALU 2023-02-28 07:27:34 -08:00
David Harris
5c8fee127b Added support for ZMMUL 2023-02-27 07:29:53 -08:00
Kevin Kim
c7050ada78 removed old shifter 2023-02-24 17:33:47 -08:00
Kevin Kim
b3180d7307 removed now-redundant zero-extend mux in alu 2023-02-24 17:14:12 -08:00
Kevin Kim
0fe1d3b9f3 took sign extension out of shifter 2023-02-24 17:09:56 -08:00
Kevin Kim
a856c5de96 optimized mux to shifter, passes rv32/64i 2023-02-24 12:09:34 -08:00
Kevin Kim
f0cf7c2c6a small optimization to condzext select 2023-02-23 21:57:28 -08:00
Kip Macsai-Goren
f8f89e692e Fixed lint errors on zero and pop count. All of regression passes 2023-02-22 20:25:51 -08:00
Kip Macsai-Goren
82611ba889 Manual attempt to merge with upstream changes 2023-02-22 19:42:30 -08:00
Kip Macsai-Goren
66833f15f2 Merge remote-tracking branch 'upstream/main' into main 2023-02-21 14:48:41 -08:00
Kevin Kim
bb252acfbe added individual zb tests in tests.vh and testbench 
- also minor alu/controller configurability changes
 2023-02-21 11:52:05 -08:00
David Harris
0b9fd8a4b3 Fixed Issue #106: fld rasies load access fault instead of illegal instruction. The IEU controller had considered all fp loads and stores to be legal regardless of whether the FPU is enabled or the type is supported. Merged illegal instruction detection from both units into the Decode stage, saving two bits of pipeline register as well. 2023-02-21 09:32:17 -08:00
Kevin Kim
2069d92f9e B DONE (for now) 
- datapath passes along comparator flag to alu
-  controllers and zbb handle min/max instructions
 2023-02-18 22:12:55 -08:00
Kevin Kim
888f4318bc controlleres and zbb handle byte instructions 2023-02-18 21:06:55 -08:00
Kevin Kim
27581f8d28 alu and controllers handle andn, orn, xnor 2023-02-18 20:57:07 -08:00
Kevin Kim
ba968ed95e added logic to handle sign/zero extend instructions 2023-02-18 20:32:40 -08:00
Kevin Kim
5c563bef43 fixed ctlzw bug in count unit 2023-02-18 20:12:30 -08:00
Kevin Kim
6d60268240 zbb handles count instructions 2023-02-18 20:12:17 -08:00
Kevin Kim
9760f0ccfd fixed bmuctrl decode bug 2023-02-18 20:11:50 -08:00
Kevin Kim
84ddb6fb54 updated comments in bmuctrl 2023-02-18 19:57:10 -08:00
Kevin Kim
bec2905ee5 rotate instructions now handled in ZBB unit 2023-02-18 19:56:54 -08:00
Kevin Kim
e47cc222a6 removed redundant decode logic in bmuctrl 2023-02-18 19:50:36 -08:00
Kevin Kim
9203b0cc2f began ZBB integration into ieu 2023-02-18 19:44:14 -08:00
Kevin Kim
7780cbd47a bmuctrl handles roriw 2023-02-18 16:26:16 -08:00
Kevin Kim
92c0d3a4ed configured shifter in alu 2023-02-17 21:58:49 -08:00
Kevin Kim
182b27dfc8 shifter bug fix 
- roli not passing unless I keep the MSB (instead of inverting) of truncated offset
 2023-02-17 21:58:26 -08:00
Kevin Kim
c353378da8 controller supports some rotates 2023-02-17 21:57:34 -08:00
Kevin Kim
4a52b57002 bmuctrl supports some rotates 2023-02-17 21:57:19 -08:00
Kevin Kim
50ec6baa07 added zero extend, pre-shift mux to ALU 2023-02-17 20:15:12 -08:00
Kevin Kim
e2d90a9422 more elegant ZBA logic in controller 2023-02-17 20:14:47 -08:00
Kevin Kim
cd92d6e5d1 bmuctrl handles .uw instructions 2023-02-17 20:14:13 -08:00
Kevin Kim
750882455f controller supports ZBA instructions 2023-02-17 16:44:16 -08:00
Kevin Kim
fcae58fcc7 removed Funct7 in Execute Stage 2023-02-17 16:12:09 -08:00
Kevin Kim
9bf11471aa bmuctrl checks for illegal zbs-style instructions 2023-02-17 12:54:08 -08:00
Kevin Kim
0bab3bec3d bctrl bug fix 
- bctrl decodes shift immediate instructions properly
 2023-02-17 11:16:29 -08:00
Kevin Kim
bb79b57cc1 alu bug fix 
- condmaskb piped in correctly instead of b
 2023-02-17 11:02:07 -08:00
Kevin Kim
ee3a520a1f alu looks at BSelect, added BSelect one hot signal 2023-02-17 09:51:49 -08:00
Kevin Kim
890c54bc0b added alu changes to previous commit 2023-02-17 08:22:13 -08:00
Kevin Kim
ec2421ead4 added BSelect Signal 
- BSelect [3:0] is a one hot encoding of if it's a ZBA_ZBB_ZBC_ZBS instruction
 2023-02-17 08:21:55 -08:00
Kevin Kim
81cb00aaee comments 2023-02-17 07:53:14 -08:00
Kevin Kim
505f3bf42f comments 2023-02-17 07:52:54 -08:00
Kevin Kim
256d362e0d comment formatting 2023-02-17 07:51:28 -08:00
Kevin Kim
9ab8183e80 alu handles ALU select instead of funct3 2023-02-17 07:51:10 -08:00
Kevin Kim
9128ac5409 added BMU controll 2023-02-17 07:50:59 -08:00
Kevin Kim
25c0811d3d Added ALUSelect signal into datapath, ieu, controller 2023-02-17 07:50:45 -08:00
David Harris
c3cc2f98d6 Reverted lab3 changes in dev branch 2023-02-16 18:10:05 -08:00