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520 Commits

Author SHA1 Message Date
Ross Thompson
fec40a1b75 fixed bug with icache miss spill fsm branch. 2021-05-25 14:26:22 -05:00
James E. Stine
bb5404e14a Update FPregfile to use more compact code and better structure for ease in reading 2021-05-25 13:21:59 -05:00
Ross Thompson
063e458ff0 Merge remote-tracking branch 'refs/remotes/origin/main' into main 2021-05-24 23:25:36 -05:00
Ross Thompson
16e037b8e9 Fixed bug in the two bit sat counter branch predictor. The SRAM needs to be read enabled by StallF. 2021-05-24 23:24:54 -05:00
James E. Stine
c4f3f2f783 Minor cosmetic elements on div.sv 2021-05-24 19:30:28 -05:00
James E. Stine
295263e122 Mod for DIV/REM instruction and update to div.sv unit 2021-05-24 19:29:13 -05:00
Ross Thompson
c5310e85c1 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-05-24 14:28:41 -05:00
Katherine Parry
90d5fdba04 FMV.X.D imperas test passes 2021-05-24 14:44:30 -04:00
Ross Thompson
65632cb7c9 Fixed minor bug in instruction class decoding. 2021-05-24 13:41:14 -05:00
Ross Thompson
72f77656a3 Fixed bug with instruction classification. The class decoder was incorretly labeling jalr acting as both jalr and jr (no link). 2021-05-24 12:37:16 -05:00
James E. Stine
6f38b7633c Update header for FPadd 2021-05-24 08:28:16 -05:00
Katherine Parry
70968a4ec3 FSD and FLD imperas tests pass 2021-05-23 18:33:14 -04:00
Katherine Parry
06af239e6c FMV.D.X imperas test passes 2021-05-20 22:17:59 -04:00
bbracker
bf6337f2f7 plic implementation optimizations 2021-05-19 18:10:48 +00:00
Katherine Parry
9464c9022d floating point infinite loop removed from imperas tests 2021-05-18 10:42:51 -04:00
James E. Stine
e808b06b82 Forgot initialization config for div - apologies 2021-05-17 17:12:27 -05:00
James E. Stine
5506efc115 Add 32/64-bit shifter for update to shifter block 2021-05-17 17:02:13 -05:00
James E. Stine
865b3ee219 Updates on Divide - pushed in working version of DIV64U for Divide and REmainder. Will do 32-bit version tomorrow as well as Signed version 2021-05-17 16:48:51 -05:00
Thomas Fleming
b9e099d53c Fix comment 2021-05-14 08:06:07 -04:00
Thomas Fleming
ea4e76938e Remove busy-mmu and fix missing signal 2021-05-14 07:14:20 -04:00
Thomas Fleming
e27bc1cbf7 Clean up MMU code 2021-05-14 07:12:32 -04:00
Thomas Fleming
1ec6ad14f6 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-05-04 15:22:21 -04:00
bbracker
8a7fc959eb small synthesis fixes 2021-05-04 15:21:01 -04:00
Thomas Fleming
19ac77d3fa Fix compiler warning in PMP checker 2021-05-04 15:18:08 -04:00
Ross Thompson
21acc45121 Fixed synthesis bug with icache valid bit. 2021-05-04 13:03:08 -05:00
Ross Thompson
52e4c49bbb Fixed icache pcmux control for handling miss spill miss. 2021-05-04 11:05:01 -05:00
Thomas Fleming
3a3c88f5b1 Fix bug in PMP checker 
Now we only enforce PMP regions if at least one is non-null
 2021-05-04 03:14:07 -04:00
Thomas Fleming
c9e5af30fa Disable PMP checker to fix test loops 
There is a bug in the PMP checker where S or U mode attempts to make a
memory access while no PMP registers are set. We currently treat this as
a failure, when this should instead be allowed.
 2021-05-04 01:56:05 -04:00
Thomas Fleming
ad40464557 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-05-03 23:15:39 -04:00
Domenico Ottolia
c0f054556c Fix bug with IllegalInstrFaultM not getting correct value 2021-05-03 22:48:03 -04:00
Thomas Fleming
0254ca7bf6 Adjust attributes in PMA checker 2021-05-03 21:58:32 -04:00
David Harris
afd6153044 Rolled back fflush on uart. Use -syncio in Modelsim command line instead. 2021-05-03 20:04:44 -04:00
David Harris
d07a7fd0f8 Flush uart print statements on \n 2021-05-03 19:51:51 -04:00
David Harris
93466a0b2a Flush uart print statements on \n 2021-05-03 19:41:37 -04:00
David Harris
58ce0fbbcc Flush uart print statements on \n 2021-05-03 19:37:45 -04:00
David Harris
b66c7b81de Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-05-03 19:29:01 -04:00
David Harris
233726e8d8 Flush uart print statements on \n 2021-05-03 19:25:28 -04:00
Ross Thompson
baf29454f1 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-05-03 16:57:36 -05:00
Ross Thompson
7f38056879 fixed subtle typo in icache fsm. Was messing up hit spill hit. 
I believe the mibench qsort benchmark runs after this icache fix.
 2021-05-03 16:55:36 -05:00
Domenico Ottolia
5ab86a690b Fix bug that caused stvec to get the wrong value 2021-05-03 17:54:57 -04:00
Thomas Fleming
ba1afec621 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-05-03 17:38:13 -04:00
Thomas Fleming
eda5a267ee Implement PMP checker and revise PMA checker 2021-05-03 17:37:42 -04:00
Thomas Fleming
8dce32fd22 Remove remnants of InstrReadC 2021-05-03 17:36:25 -04:00
Ross Thompson
e145670b15 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-05-03 14:53:54 -05:00
Ross Thompson
cdb602c9ce Removed combinational loops between icache and PMA checker. 2021-05-03 14:51:25 -05:00
Ross Thompson
19a93345b5 Reduced icache to 1 port memory. 2021-05-03 14:47:49 -05:00
Katherine Parry
ff5a809c26 fpu warnings fixed/commented 2021-05-03 19:17:09 +00:00
Thomas Fleming
cfe64e7c24 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 
Conflicts:
	wally-pipelined/src/ebu/ahblite.sv
 2021-05-03 14:02:19 -04:00
Ross Thompson
a54c231489 Eliminated extra register and fixed ports to icache. 
Still need to support physical tag check and write in icache memory.
Still need to reduce to 1 port SRAM in icache.
I would like to refactor the icache code.
 2021-05-03 12:04:54 -05:00
bbracker
c643372e1d merge conflict resolved -- Ross and I made the same fix 2021-05-03 10:10:42 -04:00
Ross Thompson
c0a4b7cb17 Fixed typo in ifu for bypassing branch predictor. 
Fixed missing signal name in local history predictor.
 2021-05-03 08:56:45 -05:00
David Harris
a37d9b5e8e Fixed lint error in div 2021-05-03 09:26:12 -04:00
bbracker
9bde239143 ifu lint fixes 2021-05-03 09:25:22 -04:00
bbracker
2368b58cc9 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-05-03 09:23:52 -04:00
Katherine Parry
db95151d8d fpu imperas tests run 2021-05-01 02:18:01 +00:00
bbracker
1fcd43e844 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-04-30 06:26:35 -04:00
bbracker
182bfdbb0e rv32 plic test and lint fixes 2021-04-30 06:26:31 -04:00
Domenico Ottolia
d03ca20dc9 Make vectored interrupt trap handling work, and add tests for mtvec with vectored interrupts 2021-04-29 20:42:14 -04:00
Thomas Fleming
6e5fc107d9 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-04-29 16:30:00 -04:00
ushakya22
9dfbfd5772 fix to pcm bug 2021-04-29 15:21:08 -04:00
Jarred Allen
8fd9cc679b Fix compile error in branch predictor 2021-04-29 14:36:56 -04:00
Shreya Sanghai
1e57c6bb92 fixed bug in gshare, global and local history BP 2021-04-29 06:14:32 -04:00
Thomas Fleming
5f2bccd88f Clean up PMA checker and begin PMP checker 2021-04-29 02:20:39 -04:00
Ross Thompson
72363f5c66 Added the ability to exclude branch predictor. 2021-04-26 14:27:42 -05:00
Ross Thompson
afbb100860 Fixed issue with not saving the first cache block read on a miss spill. 2021-04-26 12:57:34 -05:00
Ross Thompson
8e5409af66 Icache integrated! 
Merge branch 'icache-almost-working' into main
 2021-04-26 11:48:58 -05:00
bbracker
31a0387136 merge cleanup; mem init is broken 2021-04-26 08:00:17 -04:00
bbracker
ba94fa3436 it says I need to merge in order to pull 2021-04-26 07:46:24 -04:00
bbracker
1cc0dcc83f progress on bus and lrsc 2021-04-26 07:43:16 -04:00
Ross Thompson
6e803b724e Merge branch 'tests' into icache-almost-working 2021-04-25 21:25:36 -05:00
bbracker
86946266cf thomas fixed it before I did 2021-04-24 09:38:52 -04:00
bbracker
a3487a9e47 do script refactor 2021-04-24 09:32:09 -04:00
Thomas Fleming
288a6d82ce Fix HSIZE and HBURST signal widths in PMA checker 2021-04-23 20:11:43 -04:00
Ross Thompson
27ef10df07 almost working icache. 2021-04-23 16:47:23 -05:00
Ross Thompson
020fb65adf Fixed icache for 32 bit. 
Merge branch 'cache' into main
 2021-04-22 16:45:29 -05:00
Ross Thompson
c42399bdb5 Yes. The hack to not repeat the d memory operation fixed this issue. 2021-04-22 15:22:56 -05:00
Thomas Fleming
da76b80991 Write PCM to TVAL registers 2021-04-22 16:17:57 -04:00
Thomas Fleming
8fee3b3872 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-04-22 15:37:19 -04:00
Thomas Fleming
00ce24e67c Prepare to squash bad ahb accesses 2021-04-22 15:36:45 -04:00
Thomas Fleming
53c05d6a73 Clean up lint errors in fpu and muldiv 
booth.sv had an actual error where a signal was being assigned to too
many bits. muldiv has a lot of non blocking assignments, so I suppressed
those warnings so the linter output was readable.
 2021-04-22 15:36:03 -04:00
Domenico Ottolia
6b4d2e9634 Fix misa synthesis bug (for real now) 2021-04-22 15:35:20 -04:00
Thomas Fleming
38236e9172 Implement first pass at the PMA checker 2021-04-22 15:34:02 -04:00
Thomas Fleming
6d1a6694a8 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-04-22 13:20:12 -04:00
bbracker
74b35ac57a greatly improved PLIC register interface 2021-04-22 11:22:01 -04:00
Ross Thompson
d8ab7a5de2 Partially working icache. 
The current issue is a StallF is required to halt the icache from getting an updated PCF. However
if the dmemory is the reason for a stall it is possible for the icache stall to hold the d memory request continuously causing d memory to repeatedly read from memory.  This keeps StallF high and
the icache FSM is never allowed to complete.
 2021-04-22 10:20:36 -05:00
Thomas Fleming
00b3e36b30 Refactor tlb_ram to use flop primitives 2021-04-22 01:52:43 -04:00
Thomas Fleming
ef80176e2c Extend stall on leaf page lookups 2021-04-22 01:51:38 -04:00
Domenico Ottolia
fb8f244dab Fix misa bug 2021-04-22 00:59:07 -04:00
Thomas Fleming
e336fbd108 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 
Conflicts:
	wally-pipelined/src/ifu/ifu.sv
 2021-04-21 20:01:08 -04:00
Thomas Fleming
4bae666fa1 Implement virtual memory protection 2021-04-21 19:58:36 -04:00
Ross Thompson
7b3735fc25 Fixed for the instruction spills. 2021-04-21 16:47:05 -05:00
Teo Ene
ddc98e7d08 Fixed most relevant remaining synthesis compilation warnings with Ben 2021-04-21 16:06:27 -05:00
Ross Thompson
532c8771ba major progress. 
It's running the icache is imperas tests now.
Compressed does not work yet.
 2021-04-21 08:39:54 -05:00
Domenico Ottolia
bf86a809eb Add tests for sepc register 2021-04-20 23:50:53 -04:00
Ross Thompson
f3093ac612 Why was the linter messed up? 
There are a number of combo loops which need fixing outside the icache.  They may be fixed in main.
We get to instruction address 50 now!
 2021-04-20 22:06:12 -05:00
Ross Thompson
99424fb983 Progress on icache. Fixed some issues aligning the PC with instruction. Still broken. 2021-04-20 21:19:53 -05:00
Ross Thompson
251ece20fe Broken icache. Design is done. Time to debug. 2021-04-20 19:55:49 -05:00
Domenico Ottolia
0c307d2db1 Fix synthesis warnings for privileged unit (replace 'initial' settings) 2021-04-20 17:57:56 -04:00
Jarred Allen
850f728cc7 Merge branch 'main' into cache 2021-04-19 00:05:23 -04:00
Katherine Parry
d12eb0f4eb fixed synth bugs in fpu 2021-04-19 00:39:16 +00:00
Noah Boorstin
9bb1233433 neat verilog thing 2021-04-18 17:48:51 -04:00
Jarred Allen
aef57cab50 dcache lints 2021-04-15 21:13:56 -04:00
bbracker
290b3424e5 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-04-15 21:09:27 -04:00
bbracker
368c94d4ff working GPIO interrupt demo 2021-04-15 21:09:15 -04:00
Domenico Ottolia
9f13ee3f31 Add tests for scause and ucause 2021-04-15 19:41:25 -04:00
Domenico Ottolia
92bb38fa8c Add support for vectored interrupts 2021-04-15 19:13:42 -04:00
Teo Ene
2814579f30 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-04-15 15:29:09 -05:00
Teo Ene
374a93dae6 Quick fix to ahblite missing default statement done in class :) 2021-04-15 15:29:04 -05:00
Thomas Fleming
e780694ee0 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 
Conflicts:
	wally-pipelined/src/mmu/priority_encoder.sv
 2021-04-15 16:20:43 -04:00
Thomas Fleming
6dd7591ceb Change priority encoder to avoid extra assignment 2021-04-15 16:17:35 -04:00
Thomas Fleming
ff9f1e5e72 Connect tlb and icache properly 2021-04-15 14:48:39 -04:00
Teo Ene
ad86295fcf Temporary change to mmu/priority_encoder.sv 
Necessary to get synth working
Original HDL is still there, just commented out
 2021-04-15 13:37:12 -05:00
Katherine Parry
636e2de9df integraded the FMA into the FPU 2021-04-15 18:28:00 +00:00
Jarred Allen
81c02bda55 Merge branch 'main' into cache 2021-04-15 13:47:19 -04:00
Ross Thompson
87b716170c Merge branch 'bpfixes' into main 2021-04-15 09:06:21 -05:00
Shreya Sanghai
0369fc5d1e Cherry Pick merge of Shreya's localhistory predictor changes into main. 
fixed minor bugs in localHistory
 2021-04-15 09:04:36 -05:00
ShreyaSanghai
6d4042e479 added localHistoryPredictor 2021-04-15 08:58:22 -05:00
Shreya Sanghai
7e9a0602ea fixed bugs in global history to read latest GHRE 
Cherry pick Shreya's commits into main branch.
 2021-04-15 08:55:22 -05:00
bbracker
e69cc0d23a Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-04-15 09:06:03 -04:00
bbracker
51cdff3e9b csri lint improvement 2021-04-15 09:05:53 -04:00
Jarred Allen
3717699ad9 Add a comment to explain a detail 2021-04-14 23:14:59 -04:00
Thomas Fleming
3c49fd08f6 Remove imem from testbenches 2021-04-14 20:20:34 -04:00
Jarred Allen
892dfd5a9b More icache bugfixes 2021-04-14 19:03:33 -04:00
Jarred Allen
c1e2e58ebe Merge branch 'main' into cache 
Conflicts:
	wally-pipelined/src/cache/dmapped.sv
	wally-pipelined/src/cache/line.sv
	wally-pipelined/src/ifu/icache.sv
 2021-04-14 18:24:32 -04:00
bbracker
8f7ddcfdff rv64 interrupt servicing 2021-04-14 10:19:42 -04:00
Thomas Fleming
7d2d6823f1 Fix mmu lint errors 2021-04-13 19:19:58 -04:00
Thomas Fleming
0a9b208729 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-04-13 17:15:10 -04:00
Katherine Parry
ef011496a7 Various bugs fixed in FMA 2021-04-13 18:27:13 +00:00
Thomas Fleming
09c9c49541 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 
Conflicts:
	wally-pipelined/src/ebu/pagetablewalker.sv
 2021-04-13 13:42:03 -04:00
Thomas Fleming
6188f10732 Move InstrPageFault to fetch stage 2021-04-13 13:39:22 -04:00
Thomas Fleming
dc8a165806 Add lru algorithm to TLB 2021-04-13 13:37:24 -04:00
Teo Ene
1018a10625 Various code syntax changes to bring HDL to a synthesizable level 2021-04-13 11:27:12 -05:00
Jarred Allen
4ae1df1290 Merge branch 'main' into cache 2021-04-13 01:10:03 -04:00
Jarred Allen
fc8b8ad7aa A few more cache fixes 2021-04-13 01:07:40 -04:00
Ross Thompson
35f8b4f74f Fixed minor bug in muldiv which corrects the lint error. 2021-04-09 10:56:31 -05:00
Jarred Allen
d99b8f772e Merge from branch 'main' 2021-04-08 17:19:34 -04:00
Katherine Parry
f4cb92ae71 fixed FPU lint warnings 2021-04-08 18:03:21 +00:00
Katherine Parry
27cb94e7af fixed FPU lint warnings 2021-04-08 17:55:25 +00:00
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
Ross Thompson
4322694f7a Switch to use RV64IC for the benchmarks. 
Still not working correctly with the icache.

instr
addr   correct   got
 2021-04-07 19:12:43 -05:00
Ross Thompson
c91436d3b7 Merge branch 'icache_bp_bug' into tests 
Not sure this merge is right.
 2021-04-06 21:46:40 -05:00
Ross Thompson
98a04abe6c Merge remote-tracking branch 'refs/remotes/origin/tests' into tests 2021-04-06 21:20:55 -05:00
Jarred Allen
bd8f1eea3c Fix another bug in icache 2021-04-06 17:47:00 -04:00
Jarred Allen
3afc358974 Fix another bug in icache 2021-04-06 12:48:42 -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