Ross Thompson
2dc349ea6f
Fixed the wrong virtual address write into the dtlb.
2021-07-01 16:55:16 -05:00
Ross Thompson
88a18496cf
Got some stores working in virtual memory.
2021-07-01 12:49:09 -05:00
Ross Thompson
002c32d2ad
The icache ptw interlock is actually correct now. There needed to be a 1 cycle delay.
2021-06-30 17:02:36 -05:00
Ross Thompson
9ec624702d
Major rewrite of ptw to remove combo loop.
2021-06-30 16:25:03 -05:00
Ross Thompson
b2d8ba6742
The icache now correctly interlocks with the PTW on TLB miss.
2021-06-30 11:24:26 -05:00
Ross Thompson
dd84f2958e
Page table walker now walks the table.
...
Added interlock so the icache stalls.
Page table walker not walking correctly, goes to fault state.
2021-06-29 22:33:57 -05:00
Ross Thompson
bc9c944ba0
Don't use this branch walker still broken.
2021-06-28 17:26:11 -05:00
Ross Thompson
c02141697d
Fixed combo loop in between the page table walker and i/dtlb.
2021-06-24 13:47:10 -05:00
Kip Macsai-Goren
c8f80967a6
added a few very simple arbitrations in the lsuArb that pass regression. cleaned up a few unused signals. Added several comments and concerns to lsuarb so I can remember where my thoughts were at the end of the day.
2021-06-23 19:59:06 -04:00
Ross Thompson
9b8bcb8e57
Split the ReadDataW bus into two parts in preparation for the data cache. On the AHB side it is now HRDATAW and on the CPU to data cache side it is ReadDataW. lsu.sv now handles the connection between the two.
...
Also reorganized the inputs and outputs of lsu and pagetablewalker into connects between CPU, pagetablewalker, and AHB.
Finally add DisableTranslation to TLB as teh pagetablewalker will need to force no translation when active regardless of the state of SATP.
With Kip.
2021-06-23 16:43:22 -05:00
Kip Macsai-Goren
2c41da0275
Continued fixing fsm to work right with svmode
2021-06-22 13:29:49 -04:00
Kip Macsai-Goren
3e19eba20d
updated so svmode actually causes the right state tranitions. fsm now stuck in idle loop
2021-06-22 11:21:11 -04:00
David Harris
01d6ca1e2a
Fixed lint WIDTH errors
2021-06-09 20:58:20 -04:00
David Harris
d5ec797ba4
Refactored configuration files and renamed testbench-busybear to testbench-linux
2021-06-07 09:46:52 -04:00
Kip Macsai-Goren
5187574e8a
implemented Sv48.
2021-06-01 17:50:37 -04:00
Thomas Fleming
b9e099d53c
Fix comment
2021-05-14 08:06:07 -04:00
Thomas Fleming
e27bc1cbf7
Clean up MMU code
2021-05-14 07:12:32 -04:00
