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264 Commits

Author SHA1 Message Date
Domenico Ottolia
65abe13f4f Cause an Illegal Instruction Exception when attempting to write readonly CSRs 2021-04-08 05:12:54 -04:00
Thomas Fleming
fc39535e4e Refactor TLB into multiple files 2021-04-08 03:24:10 -04:00
Thomas Fleming
c54aecde73 Provide attribution link for priority encoder 2021-04-08 03:05:06 -04:00
Thomas Fleming
303c2c4839 Implement support for superpages 2021-04-08 02:44:59 -04:00
bbracker
38017e6aae declare memread signal 2021-04-05 08:13:01 -04:00
bbracker
a4c3afb847 PLIC claim reg side effects now check for memread signal 2021-04-05 08:03:14 -04:00
bbracker
4a5aa5b202 plic subword access compliance 2021-04-04 23:10:33 -04:00
Katherine Parry
e6a7353847 Added missing files in FPU 2021-04-04 18:09:13 +00:00
bbracker
31c6b2d01f Yee hoo first draft of PLIC plus self-checking tests 2021-04-04 06:40:53 -04:00
Thomas Fleming
6b43381c38 Comment out fpu from hart until module exists 2021-04-03 22:34:11 -04:00
Thomas Fleming
dbd5a4320e Merge branch 'mmu' into main 
Conflicts:
	wally-pipelined/src/wally/wallypipelinedhart.sv
 2021-04-03 22:12:52 -04:00
Thomas Fleming
8dfec29f7e Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-04-03 22:09:50 -04:00
Thomas Fleming
1cbdaf1f05 Fix extraneous page fault stall 2021-04-03 21:28:24 -04:00
Katherine Parry
d7b1379ab8 Integrated FPU 2021-04-03 20:52:26 +00:00
Ross Thompson
d21006d048 Partial fix to the integer divide stall issue. 2021-04-02 15:32:15 -05:00
James E. Stine
362f6ea2e6 Minor cleanup 2021-04-02 08:20:44 -05:00
James E. Stine
cff08adc3a Added some updates to divider - still not working all the time. Still a bug with signals within muldiv - specificaly MultDivE being modified during Execute stage. Seems to be triggered by ahblite signal. 2021-04-02 06:27:37 -05:00
Thomas Fleming
bfb4b051c6 Merge branch 'main' into mmu 2021-04-01 16:29:39 -04:00
Thomas Fleming
350fe87119 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-04-01 16:24:06 -04:00
Thomas Fleming
fdb20ee1cf Implement sfence.vma and fix tlb writing 2021-04-01 15:55:05 -04:00
James E. Stine
0495195d68 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
77b8e27205 Disable 'always-on' virtual memory 2021-03-30 22:49:47 -04:00
Thomas Fleming
eca2427f94 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
7126ab7864 Complete basic page table walker 2021-03-30 22:19:27 -04:00
ushakya22
6b9ae41302 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-03-30 15:25:07 -04:00
Brett Mathis
162f2df880 FPU Pipeline completed - can begin integration 2021-03-25 13:29:03 -05:00
Thomas Fleming
e3900bd0fa Finish finite state machines for page table walker 2021-03-25 02:48:40 -04:00
Thomas Fleming
b5003b093a Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-03-25 02:35:21 -04:00
bbracker
a3788eb218 added 1 tick delay to dtim flops 2021-03-25 02:23:30 -04:00
bbracker
02e924e55a instrfaults not respecting stalls bugfix 2021-03-25 00:16:26 -04:00
bbracker
1e3f683a9d upgraded gpio bus interface 2021-03-25 00:15:02 -04:00
bbracker
e98dd420bc future work comment about suspicious-looking verilog in csri.sv 2021-03-25 00:10:44 -04:00
Thomas Fleming
b1d849c822 Add all PMP addr registers 2021-03-24 21:58:33 -04:00
Katherine Parry
18cb1f4873 fixed various bugs in the FMA 2021-03-24 21:51:17 +00:00
Katherine Parry
56dc8de009 fixed various bugs in the FMA 2021-03-24 01:35:32 +00:00
Teo Ene
ef3d2dda48 Added BOOTTIM to InstrAccessFaultF calculation in uncore/imem 2021-03-23 15:21:13 -05:00
Shreya Sanghai
1d6a2989ed PC counts branch instructions 2021-03-23 14:25:51 -04:00
bbracker
5efd5958e7 added delays to uart AHB signals 2021-03-22 15:40:29 -04:00
bbracker
11d4a8ab34 first pass at PLIC interface 2021-03-22 10:14:21 -04:00
Katherine Parry
f741ba7702 fixed various bugs in the FMA 2021-03-21 22:53:04 +00:00
Katherine Parry
e317e7511e messy FMA rewrite using section 7.5.4 in The Handbook of Floating-Point Arithmetic 2021-03-20 02:05:16 +00:00
bbracker
85363e941d AHB bugfixes and sim waveview refactoring 2021-03-18 18:25:12 -04:00
Shreya Sanghai
bbe0957df5 Merge branch 'gshare' into main 
Conflicts:
	wally-pipelined/regression/wave.do
 2021-03-18 17:25:48 -04:00
Ross Thompson
1091dd10c1 Switched to gshare from global history. 
Fixed a few minor bugs.
 2021-03-18 16:05:59 -05:00
Ross Thompson
8f4051543c Fixed minor bug with the size of gshare. 2021-03-18 16:00:09 -05:00
Shreya Sanghai
eb86bfc084 removed unnecesary PC registers in ifu 2021-03-18 16:31:21 -04:00
Thomas Fleming
8d484174a7 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-03-18 14:36:42 -04:00
Thomas Fleming
7f7597e667 Connect tlb, pagetablewalker, and memory 2021-03-18 14:35:46 -04:00
Noah Boorstin
bc1a0c6ee7 change ifndef to generate/if 2021-03-18 12:50:19 -04:00
Noah Boorstin
a2b0af460e everyone gets a bootram 2021-03-18 12:35:37 -04:00
Shreya Sanghai
36f0631203 added gshare and global history predictor 2021-03-16 17:03:01 -04:00
Shreya Sanghai
9eed875886 added global history branch predictor 2021-03-16 16:06:40 -04:00
Shreya Sanghai
08e9149e20 made performance counters count branch misprediction 2021-03-16 11:24:17 -04:00
Shreya Sanghai
74f1641c5a Merge branch 'counters' into main 
added a configurable number of performance counters
 2021-03-16 11:01:30 -04:00
bbracker
345254b5a3 slightly smarter dtim HREADY 2021-03-13 06:55:34 -05:00
bbracker
c5015e5809 imem rd2 adrbits bugfix 2021-03-13 00:10:41 -05:00
bbracker
f4fb546969 clint HREADY signal update 2021-03-12 20:23:55 -05:00
Ross Thompson
6ee97830f7 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-03-12 14:58:04 -06:00
Ross Thompson
7743d8edc3 Cleanup of the branch predictor flush and stall controls. 2021-03-12 14:57:53 -06:00
David Harris
865c103599 64-bit AMO debugged 2021-03-11 23:18:33 -05:00
Thomas Fleming
1294235837 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
42275e92ed Initial untested implementation of AMO instructions 2021-03-11 00:11:31 -05:00
Noah Boorstin
2c25e270a2 change flop in ahb controller to use normal flop module 2021-03-10 19:14:02 +00:00
David Harris
17c0f9629a WALLY-LRSC atomic test passing 2021-03-09 09:28:25 -05:00
David Harris
9c7da510fb Created atomic test vector and directories 2021-03-08 09:38:55 -05:00
Ross Thompson
87ed6d510c Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-03-05 15:27:22 -06:00
Ross Thompson
301166d062 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
be6ee84d87 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-03-05 15:46:51 -05:00
Noah Boorstin
86142e764a Merge branch 'main' into busybear 2021-03-05 20:27:19 +00:00
bbracker
850a2e9329 added a delay to sel signals 2021-03-05 15:07:34 -05:00
bbracker
77e2e357a7 more merging fixes 2021-03-05 14:36:07 -05:00
bbracker
ed4ff1ecd0 remove deprecated mem signals 2021-03-05 14:27:38 -05:00
bbracker
0f4a231543 first merge of ahb fix 2021-03-05 14:24:22 -05:00
Thomas Fleming
2e2eb5839f Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-03-05 13:35:44 -05:00
Thomas Fleming
8c97143be6 Place tlb parameters into constant header file 2021-03-05 13:35:24 -05:00
Thomas Fleming
7e11317a2d Export SATP_REGW from csrs to MMU modules 2021-03-05 01:22:53 -05:00
Noah Boorstin
f48af209c4 busybear: make CSRs only weird for us 2021-03-05 00:46:32 +00:00
Ross Thompson
a662aa487c Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-03-04 17:31:27 -06:00
Noah Boorstin
dfae278ffb busybear: make imperas tests work again 2021-03-04 22:44:49 +00:00
Katherine Parry
cfac6bf0c7 fixed various bugs 2021-03-04 22:20:39 +00:00
Katherine Parry
09564f1c77 fixed various bugs 2021-03-04 22:20:28 +00:00
Katherine Parry
a6bc39b5ad fixed various bugs 2021-03-04 22:20:23 +00:00
Katherine Parry
526e3f5996 fixed various bugs 2021-03-04 22:20:02 +00:00
Katherine Parry
1e906b36a0 fixed various bugs 2021-03-04 22:19:21 +00:00
Katherine Parry
3fb0f323b8 fixed various bugs 2021-03-04 22:18:47 +00:00
Katherine Parry
fdfc0dbf46 fixed various bugs 2021-03-04 22:18:19 +00:00
Thomas Fleming
3303a013ef Merge branch 'walker' into main 2021-03-04 15:27:03 -05:00
Noah Boorstin
735c6789ea busybear: comment out instraccessfaultf for imem for now 2021-03-04 20:26:41 +00:00
Noah Boorstin
827dfd774b Merge branch 'main' into busybear 
Conflicts:
	wally-pipelined/src/uncore/imem.sv
 2021-03-04 20:16:03 +00:00
Ross Thompson
66e84f3a2c 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
4d14c714a7 Fixed forwarding around the 2 bit predictor. 2021-03-04 13:01:41 -06:00
Shreya Sanghai
246dbd05e7 fixed bugs 2021-03-04 12:59:45 -05:00
Shreya Sanghai
f0ec365117 added performance counters 2021-03-04 11:42:52 -05:00
Ross Thompson
52d95d415f Converted to using the BTB to predict the instruction class. 2021-03-04 09:23:35 -06:00
Thomas Fleming
de3f2547f4 Install dtlb in dmem 2021-03-04 03:30:06 -05:00
Thomas Fleming
1df7151fb6 Install tlb into ifu 2021-03-04 03:11:34 -05:00
Thomas Fleming
2e409f2299 Merge branch 'tlb_toy' into main 2021-03-04 02:41:11 -05:00
Thomas Fleming
5f98c932bf Move tlb into mmu directory 2021-03-04 02:39:08 -05:00
Teo Ene
f060f6cb9d Fix to 32-bit option of commit babe6ce9db 2021-03-04 01:33:34 -06:00
Thomas Fleming
d9f396ee0e Merge branch 'main' into tlb_toy 2021-03-04 01:18:04 -05:00