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94 Commits

Author SHA1 Message Date
James E. Stine
2eeb12c674 Updates to muldiv.sv for 32-bit div/rem 2021-06-01 15:31:07 -04:00
Ross Thompson
ab509614bb Changed to bp config to use gshare. 2021-06-01 12:14:58 -05:00
Ross Thompson
857f59ab5c Now have global history working correctly. 2021-06-01 10:57:43 -05:00
Ross Thompson
8a035104ac It's a bit sloppy, but the global history predictor is working correctly now. 
There were two major bugs with the predictor.
First the update mechanism was completely wrong.  The PHT is updated with the GHR that was used to lookup the prediction.  PHT[GHR] = Sat2(PHT[GHR], branch outcome).
Second the GHR needs to be updated speculatively as the branch is predicted.  This is important so that back to back branches' GHRs are not the same.  The must be different to avoid aliasing.  Speculation of the GHR update allows them to be different.  On mis prediction the GHR must be reverted.
This implementation is a bit sloppy with names and now the GHR recovery is performed.  Updates to follow.
 2021-05-27 23:06:28 -05:00
James E. Stine
c89d3e01bb Update to rv64icfd wally-config to run through FP tests 2021-05-21 09:22:17 -05:00
Katherine Parry
06af239e6c FMV.D.X imperas test passes 2021-05-20 22:17:59 -04:00
James E. Stine
44dc665fc5 Mod to config to properly add FP stuff - for icfd test. Should not change regression test through Imperas as just mod to testbench (add tests64d/tests64f but remove from MISA) 2021-05-18 13:48:44 -05:00
Katherine Parry
9464c9022d floating point infinite loop removed from imperas tests 2021-05-18 10:42:51 -04:00
Elizabeth Hedenberg
170f072b52 pushing coremark to main branch 2021-05-11 21:33:39 -04:00
Shriya Nadgauda
c5a306426a finishing merge conflict changes 2021-05-03 22:15:05 -04:00
Shriya Nadgauda
b7159652f6 merge conflict fixes 2021-05-03 22:12:30 -04:00
Shriya Nadgauda
968994c04a updated pipeline tests 2021-05-03 22:07:36 -04:00
Elizabeth Hedenberg
2d1d929485 coremark print statment 2021-05-03 19:35:08 -04:00
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
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
Ross Thompson
818c0abc89 Fixed memory size in configs for rv32ic and rv64ic. 
Removed warning on call to $fscanf.
 2021-04-29 17:36:46 -05:00
Ross Thompson
72363f5c66 Added the ability to exclude branch predictor. 2021-04-26 14:27:42 -05:00
Ross Thompson
8e5409af66 Icache integrated! 
Merge branch 'icache-almost-working' into main
 2021-04-26 11:48:58 -05:00
Ross Thompson
6e803b724e Merge branch 'tests' into icache-almost-working 2021-04-25 21:25:36 -05:00
bbracker
a3487a9e47 do script refactor 2021-04-24 09:32:09 -04:00
bbracker
74b35ac57a greatly improved PLIC register interface 2021-04-22 11:22:01 -04:00
Noah Boorstin
3f0ead9d4e yay buildroot passes a decent amount of tests now 
gets through the first 15k instructions, that's good enough for now
also slight change to string parsing in busybear testbench
 2021-04-19 03:26:08 -04:00
Noah Boorstin
6954e6df4c buildroot: sim is now running! 
yes it only gets through 5 instructions right now. Yes that's my fault.
 2021-04-17 14:44:32 -04:00
Noah Boorstin
4f97e9e761 start to add buildroot testbench 
This still uses testbench-busybear.sv
I think it might be time to finally rename nearly 'busybear' thing to 'linux'
 2021-04-16 23:27:29 -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
92bb38fa8c Add support for vectored interrupts 2021-04-15 19:13:42 -04:00
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
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
Thomas Fleming
303c2c4839 Implement support for superpages 2021-04-08 02:44:59 -04:00
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
Ross Thompson
bff2d61a1f Steps to getting branch predictor benchmarks running. 2021-04-06 21:20:51 -05:00
bbracker
31c6b2d01f Yee hoo first draft of PLIC plus self-checking tests 2021-04-04 06:40:53 -04:00
Thomas Fleming
350fe87119 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-04-01 16:24:06 -04:00
Shreya Sanghai
df149d1be7 fixed minor bugs in localHistory 2021-04-01 13:40:08 -04:00
Shreya Sanghai
b544526766 fixed bugs in global history to read latest GHRE 2021-03-31 21:56:14 -04:00
Teo Ene
7c364a26e9 Updated MISA in coremark_bare config file 2021-03-31 20:39:02 -05:00
Ross Thompson
a64a37d702 Merge of main with the new icache and the branch predictor. I believe there is a bug in the icache with unaligned memory access. The second part of the access is incorrectly relying on the PCF being the address of the next two bytes of the instruction. However this is not always the case as the branch predictor can get the wrong target address. The icache needs to generate the +2 address internally. 2021-03-30 23:18:20 -05:00
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
Teo Ene
385ce9a8f9 Added BPTYPE to coremark_bare config 2021-03-24 16:38:29 -05:00
Ross Thompson
6a050219d4 updated the branch predictor config. 2021-03-23 13:54:59 -05:00
Ross Thompson
2b0f7cdd42 Temporary exe2memfile0.pl script to support starting addresses of 0. 2021-03-23 13:54:59 -05:00
Ross Thompson
e1842c8da6 Broken commit. Trying to get exe2memfile.pl to work correctly with non 0x8000_0000 starting addresses. 2021-03-23 13:54:59 -05:00
Noah Boorstin
77dd0b4504 busybear: allow overwriting read values 2021-03-22 17:28:44 -04:00
bbracker
11d4a8ab34 first pass at PLIC interface 2021-03-22 10:14:21 -04:00
Shreya Sanghai
bbe0957df5 Merge branch 'gshare' into main 
Conflicts:
	wally-pipelined/regression/wave.do
 2021-03-18 17:25:48 -04:00