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245 Commits

Author SHA1 Message Date
Thomas Fleming
f9bf2fbc01 Implement sfence.vma and fix tlb writing 2021-04-01 15:55:05 -04:00
James E. Stine
59dee5580c Fixed some divide -still bug in AHB causing InstStall to deassert and next instruction to get into divide unit. Hope to fix soon. Divide seems to work if given enough time. 2021-04-01 12:30:37 -05:00
Thomas Fleming
9388a9f28a Disable 'always-on' virtual memory 2021-03-30 22:49:47 -04:00
Thomas Fleming
e3d548d452 Merge remote-tracking branch 'origin/main' into main 
Bring icache and MMU code together

Conflicts:
	wally-pipelined/src/ifu/ifu.sv
	wally-pipelined/testbench/testbench-imperas.sv
 2021-03-30 22:24:47 -04:00
Thomas Fleming
4b2765f8e2 Complete basic page table walker 2021-03-30 22:19:27 -04:00
ushakya22
ba01d57767 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-03-30 15:25:07 -04:00
Brett Mathis
aedc96cd04 FPU Pipeline completed - can begin integration 2021-03-25 13:29:03 -05:00
Thomas Fleming
89a2fe5741 Finish finite state machines for page table walker 2021-03-25 02:48:40 -04:00
Thomas Fleming
4f01aae844 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-03-25 02:35:21 -04:00
bbracker
d52c71086a added 1 tick delay to dtim flops 2021-03-25 02:23:30 -04:00
bbracker
5327dcfcc8 instrfaults not respecting stalls bugfix 2021-03-25 00:16:26 -04:00
bbracker
a8b7d7a248 upgraded gpio bus interface 2021-03-25 00:15:02 -04:00
bbracker
3e656fc035 future work comment about suspicious-looking verilog in csri.sv 2021-03-25 00:10:44 -04:00
Thomas Fleming
f2604797fb Add all PMP addr registers 2021-03-24 21:58:33 -04:00
Katherine Parry
123e63b440 fixed various bugs in the FMA 2021-03-24 21:51:17 +00:00
Katherine Parry
fb78dedae2 fixed various bugs in the FMA 2021-03-24 01:35:32 +00:00
Teo Ene
8556c07261 Added BOOTTIM to InstrAccessFaultF calculation in uncore/imem 2021-03-23 15:21:13 -05:00
Shreya Sanghai
09b90557f7 PC counts branch instructions 2021-03-23 14:25:51 -04:00
bbracker
c3a6d6bf42 added delays to uart AHB signals 2021-03-22 15:40:29 -04:00
bbracker
eea7e2e47e first pass at PLIC interface 2021-03-22 10:14:21 -04:00
Katherine Parry
9af0ad815c fixed various bugs in the FMA 2021-03-21 22:53:04 +00:00
Katherine Parry
fd381e60d7 messy FMA rewrite using section 7.5.4 in The Handbook of Floating-Point Arithmetic 2021-03-20 02:05:16 +00:00
bbracker
df51d9908d AHB bugfixes and sim waveview refactoring 2021-03-18 18:25:12 -04:00
Shreya Sanghai
dfc86539cc Merge branch 'gshare' into main 
Conflicts:
	wally-pipelined/regression/wave.do
 2021-03-18 17:25:48 -04:00
Ross Thompson
9386e6a524 Switched to gshare from global history. 
Fixed a few minor bugs.
 2021-03-18 16:05:59 -05:00
Ross Thompson
181a28e875 Fixed minor bug with the size of gshare. 2021-03-18 16:00:09 -05:00
Shreya Sanghai
f35d3b39c8 removed unnecesary PC registers in ifu 2021-03-18 16:31:21 -04:00
Thomas Fleming
859d242d81 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-03-18 14:36:42 -04:00
Thomas Fleming
062c4d40da Connect tlb, pagetablewalker, and memory 2021-03-18 14:35:46 -04:00
Noah Boorstin
847bf0b9a6 change ifndef to generate/if 2021-03-18 12:50:19 -04:00
Noah Boorstin
fa1407f6e3 everyone gets a bootram 2021-03-18 12:35:37 -04:00
Shreya Sanghai
d9b1e7d67f added gshare and global history predictor 2021-03-16 17:03:01 -04:00
Shreya Sanghai
a79e26f9d8 added global history branch predictor 2021-03-16 16:06:40 -04:00
Shreya Sanghai
23a7c8cd92 made performance counters count branch misprediction 2021-03-16 11:24:17 -04:00
Shreya Sanghai
518618ad38 Merge branch 'counters' into main 
added a configurable number of performance counters
 2021-03-16 11:01:30 -04:00
bbracker
63bfd79009 slightly smarter dtim HREADY 2021-03-13 06:55:34 -05:00
bbracker
12721837f0 imem rd2 adrbits bugfix 2021-03-13 00:10:41 -05:00
bbracker
0f49108ee6 clint HREADY signal update 2021-03-12 20:23:55 -05:00
Ross Thompson
ccaaa829ce Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-03-12 14:58:04 -06:00
Ross Thompson
0637874cac Cleanup of the branch predictor flush and stall controls. 2021-03-12 14:57:53 -06:00
David Harris
d4e84c58ed 64-bit AMO debugged 2021-03-11 23:18:33 -05:00
Thomas Fleming
e57b6cf18c Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 
Conflicts:
	wally-pipelined/src/ebu/ahblite.sv
 2021-03-11 00:15:58 -05:00
David Harris
fe4d288589 Initial untested implementation of AMO instructions 2021-03-11 00:11:31 -05:00
Noah Boorstin
2d1f63b590 change flop in ahb controller to use normal flop module 2021-03-10 19:14:02 +00:00
David Harris
bea8ac6d59 WALLY-LRSC atomic test passing 2021-03-09 09:28:25 -05:00
David Harris
52d4a04eb0 Created atomic test vector and directories 2021-03-08 09:38:55 -05:00
Ross Thompson
d6bc34121f Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-03-05 15:27:22 -06:00
Ross Thompson
9a93193d6a Oups. I forgot to update other do files with the commands to preload the branch predictor memories. 2021-03-05 15:23:53 -06:00
Thomas Fleming
ca2a65770c Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-03-05 15:46:51 -05:00
Noah Boorstin
f0a103687e Merge branch 'main' into busybear 2021-03-05 20:27:19 +00:00
bbracker
612f7a9ee4 added a delay to sel signals 2021-03-05 15:07:34 -05:00
bbracker
a1223ee13b more merging fixes 2021-03-05 14:36:07 -05:00
bbracker
2cd0f19129 remove deprecated mem signals 2021-03-05 14:27:38 -05:00
bbracker
62dd9e3075 first merge of ahb fix 2021-03-05 14:24:22 -05:00
Thomas Fleming
97e9baa316 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-03-05 13:35:44 -05:00
Thomas Fleming
85dcbee86b Place tlb parameters into constant header file 2021-03-05 13:35:24 -05:00
Thomas Fleming
e48dc38869 Export SATP_REGW from csrs to MMU modules 2021-03-05 01:22:53 -05:00
Noah Boorstin
0af002eb2f busybear: make CSRs only weird for us 2021-03-05 00:46:32 +00:00
Ross Thompson
a982ad7a9a Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-03-04 17:31:27 -06:00
Noah Boorstin
cfcd7d1518 busybear: make imperas tests work again 2021-03-04 22:44:49 +00:00
Katherine Parry
5374dca1b9 fixed various bugs 2021-03-04 22:20:39 +00:00
Katherine Parry
4591b25c86 fixed various bugs 2021-03-04 22:20:28 +00:00
Katherine Parry
6fa2bc8efe fixed various bugs 2021-03-04 22:20:23 +00:00
Katherine Parry
10b179399c fixed various bugs 2021-03-04 22:20:02 +00:00
Katherine Parry
8e3b74c772 fixed various bugs 2021-03-04 22:19:21 +00:00
Katherine Parry
4e6b35c8b2 fixed various bugs 2021-03-04 22:18:47 +00:00
Katherine Parry
3c86d0912a fixed various bugs 2021-03-04 22:18:19 +00:00
Thomas Fleming
38bd683f2d Merge branch 'walker' into main 2021-03-04 15:27:03 -05:00
Noah Boorstin
5c456e2d7f busybear: comment out instraccessfaultf for imem for now 2021-03-04 20:26:41 +00:00
Noah Boorstin
fde94f9057 Merge branch 'main' into busybear 
Conflicts:
	wally-pipelined/src/uncore/imem.sv
 2021-03-04 20:16:03 +00:00
Ross Thompson
619bbd9d83 Merge branch 'bp' into main 
Concerns:
1. I don't think the correct data buses are going to the multiplier.
2. I'm not sure the FlushF signal is correct.
 2021-03-04 13:35:46 -06:00
Ross Thompson
a8cd4f2b2e Fixed forwarding around the 2 bit predictor. 2021-03-04 13:01:41 -06:00
Shreya Sanghai
f95a1eadd9 fixed bugs 2021-03-04 12:59:45 -05:00
Shreya Sanghai
7cd8f1a592 added performance counters 2021-03-04 11:42:52 -05:00
Ross Thompson
d0223da2f7 Converted to using the BTB to predict the instruction class. 2021-03-04 09:23:35 -06:00
Thomas Fleming
8c410b6fbe Install dtlb in dmem 2021-03-04 03:30:06 -05:00
Thomas Fleming
1a2db17ee5 Install tlb into ifu 2021-03-04 03:11:34 -05:00
Thomas Fleming
ab6ae6d3f1 Merge branch 'tlb_toy' into main 2021-03-04 02:41:11 -05:00
Thomas Fleming
7a9f866120 Move tlb into mmu directory 2021-03-04 02:39:08 -05:00
Teo Ene
b15ef47d24 Fix to 32-bit option of commit 2d40898158 2021-03-04 01:33:34 -06:00
Thomas Fleming
d821a1dbfa Merge branch 'main' into tlb_toy 2021-03-04 01:18:04 -05:00
Thomas Fleming
c03b540956 Generalize tlb module 
- number of tlb entries is now parameterized
- tlb now supports rv64i
 2021-03-04 01:13:31 -05:00
Thomas Fleming
692d4152fa Begin hardware page table walker 2021-03-03 17:13:45 -05:00
Noah Boorstin
923489fe16 busybear: probably discovered bug in ahb code 2021-03-01 20:56:04 +00:00
Noah Boorstin
b3247eadd2 busybear: more adapting to new memory system 2021-03-01 18:50:42 +00:00
Noah Boorstin
f11b3108d8 busybear: fix bootram range 2021-03-01 17:45:21 +00:00
David Harris
23a1cf63b3 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-03-01 00:09:55 -05:00
David Harris
6f4e8b723e Initial (untested) implementation of lr and sc 2021-03-01 00:09:45 -05:00
Teo Ene
2d40898158 Properly implemented the fix from commit 5fee65231e 2021-02-28 22:22:04 -06:00
Noah Boorstin
a267115635 Merge branch 'main' into busybear 2021-02-28 20:45:08 +00:00
Noah Boorstin
17715085ba busybear: start preloading bootmem 2021-02-28 20:43:57 +00:00
Noah Boorstin
856a1079cc busybear: change sstatus, mstatus reset value 2021-02-28 16:19:03 +00:00
Noah Boorstin
2769b147cb busybear: add 2nd dtim for bootram 2021-02-28 16:08:54 +00:00
Noah Boorstin
969c094489 busybear: remove gpio, start adding 2nd ram 2021-02-28 06:02:40 +00:00
Noah Boorstin
0596d61a2a busybear: instantiate normal wallypipelinedsoc 2021-02-28 06:02:21 +00:00
Ross Thompson
6191fcb1af Shreya and I found a bug with the exeuction of JAL and JALR instructions. The link was only set in the writeback stage. Once the branch predictor started correctly predicting JAL(R)s the ALU and forwarding logic need to have the PCLinkE at the execution stage in case an instruction in the next two clocks need the data. 2021-02-26 20:12:27 -06:00
David Harris
73920282af Eliminated flushing pipeline on CSR reads 2021-02-26 17:00:07 -05:00
David Harris
0258901865 Cleaned out unused signals 2021-02-26 09:17:36 -05:00
kaveh pezeshki
e8b306bcba merged with main to integrate with AHB 2021-02-26 05:37:10 -08:00
David Harris
225102047a Clean up bus interface code 2021-02-26 01:03:47 -05:00