bbracker
13763b002a
switch linux graphical sim over to Ross's waves
2021-10-24 18:39:23 -07:00
bbracker
c0a7b12f94
or actually needed to reduce expectations of buildroot
2021-10-24 06:59:34 -07:00
bbracker
d3969bb1ba
increase regression's expectations of buildroot
2021-10-24 06:50:22 -07:00
bbracker
e0b6566cbd
buildroot do scripts now compile flops
2021-10-23 23:14:59 -07:00
bbracker
de6a52f6eb
Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main
2021-10-23 13:17:37 -07:00
bbracker
3c0b0987d2
add option for regression to do a partial execution of buildroot
2021-10-23 13:17:30 -07:00
David Harris
200eb453fb
wrapping up lint cleanup; many unused signals removed
2021-10-23 12:15:14 -07:00
David Harris
ac1b1bfbb6
update scripts for handling src/*/* subdirectories
2021-10-23 08:54:29 -07:00
David Harris
e2e950ac0f
Cleaned up LINT erors
2021-10-23 06:28:49 -07:00
David Harris
3249d65209
Added -lint flag to vsim. Cleaned some lint errors. Moved lint-wally to regression directory for convenience.
2021-10-23 06:15:26 -07:00
Ross Thompson
de4ea16d32
Merge branch 'main' into fpga
2021-10-20 16:24:55 -05:00
Ross Thompson
d11136c406
Fixed bug with the external memory region selection.
...
Updated bios program to copy just 127MB to dram.
2021-10-19 11:23:23 -05:00
James E. Stine
1dba57dce7
Update to fpdivsqrt to go on posedge as it should. Also an update to
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individual regression test for TestFloat (still needs some tweaking)
2021-10-13 17:14:42 -05:00
bbracker
4abc6fc915
change infrastructure to expect only 6.3 million from buildroot
2021-10-12 10:41:15 -07:00
Ross Thompson
f6c6cb9ed2
Merge branch 'main' into fpga
2021-10-11 18:17:58 -05:00
Ross Thompson
bfe633d087
Partially working sd card reader.
2021-10-11 10:23:45 -05:00
David Harris
4139f27d10
Divider FSM simplification
2021-10-10 22:24:14 -07:00
David Harris
75c17dc372
Major reorganization of regression and simulation and testbenches
2021-10-10 15:07:51 -07:00
bbracker
13352eccda
Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main
2021-10-10 13:12:44 -07:00
bbracker
161767cddd
make regression expect what buildroot is actually able to reach
2021-10-10 13:12:36 -07:00
David Harris
c2bb0324c6
Removed negedge flops from divider
2021-10-10 10:41:13 -07:00
bbracker
55f6584e62
update wave-do
2021-10-07 19:16:52 -04:00
James E. Stine
199ce88b39
Add generic wave command file
2021-10-06 13:17:49 -05:00
James E. Stine
93668b5185
Update to testbench for FP stuff
2021-10-06 13:16:38 -05:00
Ross Thompson
047bbcf3d7
updated fpga wavefile.
2021-10-03 12:14:22 -05:00
Ross Thompson
e9135f1fd5
Added fpga wave file.
2021-10-03 11:56:11 -05:00
David Harris
78eba19a1f
Replacing XE and DE with SrcAE and SrcBE in divider
2021-10-03 11:11:53 -04:00
David Harris
c690a863b5
Added suffixes to more divider signals
2021-10-03 00:32:58 -04:00
David Harris
b3bded9e6c
Added more pipeline stage suffixes to divider
2021-10-02 22:54:01 -04:00
David Harris
f913305993
Partial divider cleanup
2021-10-02 20:55:37 -04:00
David Harris
4926ae343a
Divider code cleanup
2021-10-02 10:13:49 -04:00
David Harris
852eb24731
Moved negating divider otuput to M stage
2021-10-02 10:03:02 -04:00
Ross Thompson
fca9b9e593
Movied tristate to test bench level.
2021-09-30 11:27:42 -05:00
Ross Thompson
cefbcd1b0c
Partially sd card read on fpga.
2021-09-30 11:23:09 -05:00
David Harris
42d573be57
SRT Division unsigned passing Imperas tests
2021-09-30 12:17:24 -04:00
Ross Thompson
7ca801113e
Added debugging directives to system verilog.
2021-09-27 13:57:46 -05:00
Ross Thompson
c917f14b6b
Almost done writting driver for flash card reader.
2021-09-25 19:05:07 -05:00
Ross Thompson
69674f272a
We now have a rough sdc read routine.
2021-09-25 17:51:38 -05:00
Ross Thompson
23425c8d71
Write of the SDC address register is correct. The command register is not yet working.
...
The root problem is the command register needs to be reset at the end of the SDC transaction.
2021-09-24 18:48:11 -05:00
Ross Thompson
86524a5f64
Now have software interacting with the initialization and settting the address register.
2021-09-24 18:30:26 -05:00
Ross Thompson
44196af61a
Have program which checks for sdc init and issues read, but read done is
...
not correctly being read back by the software. The error is in how the
sdc indicates busy.
2021-09-24 15:53:38 -05:00
Ross Thompson
80e37d2291
Added SDC defines to each config mode.
...
Added sd_top which is the sd card reader.
2021-09-24 12:24:30 -05:00
Ross Thompson
c644e940c2
Updated Imperas test bench to work with the SDC reader.
2021-09-24 11:22:54 -05:00
Ross Thompson
221dbe92b2
Fixed the amo on dcache miss cpu stall issue.
2021-09-17 22:15:03 -05:00
Ross Thompson
e16c27225b
Finished adding the d cache flush. Required ensuring the write data, address, and size are
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correct when transmitting to AHBLite interface.
2021-09-17 13:03:04 -05:00
Ross Thompson
0b1e59d075
Updated Dcache to fully support flush. This appears to work.
...
Updated PCNextF so it points to the correct PC after icache invalidate.
Build root crashes with PCW mismatch and invalid register writes.
2021-09-17 10:25:21 -05:00
Ross Thompson
615fd41e7b
Added states and all control and data path logic to support d cache flush. This is currently untested; however the existing regresss test passes.
2021-09-16 18:32:29 -05:00
Ross Thompson
cae350abb7
Added invalidate to icache.
2021-09-16 16:15:54 -05:00
bbracker
a158558b83
Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main
2021-09-15 17:31:11 -04:00
bbracker
ff5379fd95
fix regression
2021-09-15 17:30:59 -04:00
David Harris
9ae25b0cea
Added Zfencei support in instruction decoder and configurations. Also added riscv-arch-test 32-bit tests to regression.
2021-09-15 13:14:00 -04:00
David Harris
9fa048980d
Fixed MTVAL contents during breakpoint. Now all riscv-arch-test vectors pass in rv32 and rv64
2021-09-13 12:40:40 -04:00
David Harris
7be1160a48
Cleaned up wally-arch test scripts
2021-09-13 00:02:32 -04:00
David Harris
12bd351edf
Lint cleaning, riscv-arch-test testing
2021-09-09 11:05:12 -04:00
David Harris
9480f8efdb
Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main
2021-09-08 16:00:12 -04:00
David Harris
118cb7fb87
Added testbench-arch for riscv-arch-test suite
2021-09-08 15:59:40 -04:00
Ross Thompson
6550f38af9
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
2021-09-08 12:47:03 -05:00
Ross Thompson
a15d6c1c96
Slight modification to wave file.
2021-09-08 10:40:46 -05:00
bbracker
bb84354a47
fixed bug where M mode was sensitive to S mode traps
2021-09-07 19:14:39 -04:00
bbracker
da9a366d20
No longer forcing CSRReadValM because that can feedback to corrupt some CSRs
2021-09-06 22:59:54 -04:00
Ross Thompson
05455f8392
Changed name of memory in icache.
2021-09-06 20:54:52 -05:00
bbracker
c463f177e9
restore functionality of being able to turn on waves at a certain instruction count; restore linux-waves.do because wave.do seems to be in disrepair
2021-09-04 19:45:04 -04:00
Ross Thompson
2968623f9a
Partial multiway set associative icache.
2021-08-30 10:49:24 -05:00
Ross Thompson
6a9fa2fae3
Fixed bugs I introduced to the icache.
2021-08-27 15:00:40 -05:00
Ross Thompson
96cbd8e785
Modified icache to no longer need StallF in the PCMux logic. Instead this is handled in the icachefsm.
...
One downside is it increases the icache complexity. However it also fixes an untested bug. If a region
was uncacheable it would have been possible for the request to be made multiple times. Now that is
not possible. Additionally spills were oscillating between the spill hit states without this change.
The impact was 'benign' as the final spilled instruction always had the correct upper 16 bits.
2021-08-27 11:03:36 -05:00
Ross Thompson
d6ff89b7e6
Swapped out the icachemem for cacheway. cacheway is modified to optionally support dirty bits.
2021-08-26 15:43:02 -05:00
Ross Thompson
e4bbd3bbc7
Converted the icache type from logic to state type.
2021-08-26 10:41:42 -05:00
Ross Thompson
0530047f53
Moved dcache fsm to separate module.
2021-08-25 21:37:10 -05:00
Ross Thompson
d23b860c96
Moved LRU and storage for the LRU into a single module. Also found a subtle bug with the update address used to write the cache's memory.
...
This was correct for the LRU but incorrect for the data, tag, valid, and dirty storage.
2021-08-25 21:09:42 -05:00
Ross Thompson
e9a1dc90f6
Removed generate around the dcache memories.
2021-08-25 13:27:26 -05:00
Ross Thompson
983524e81b
Updated linux test bench documenation and scripts.
2021-08-25 10:54:47 -05:00
Ross Thompson
fe378f2692
Added function tracking to linux test bench.
2021-08-24 11:08:46 -05:00
Ross Thompson
ddbc659d7b
Fixed bug with coremark do file. When I moved the testbench to have a common set of files i forgot to remove the old path reference to function_radix.sv in wally-coremark_bare.do.
2021-08-19 10:33:11 -05:00
Ross Thompson
6c57002d0e
Added logic to linux test bench to not stop simulation on csr write faults.
2021-08-15 11:13:32 -05:00
Ross Thompson
af2c6fd6ff
Updated linux-wave.do to have cursors at the timer interrupt problem.
2021-08-13 17:29:37 -05:00
Ross Thompson
55fda4de62
Switched ExceptionM to dcache to be just exceptions.
...
Added test bench logic to hold forces until the W stage is unstalled.
2021-08-13 15:53:50 -05:00
Ross Thompson
e141a00934
Cleaned up the linux testbench by removing old code and signals.
...
Added back in the csr checking logic.
Added code to force timer, external, and software interrupts by using the expected
values from qemu's (m/s)cause registers.
Still need to prevent wally's timer interrupt.
2021-08-13 14:39:05 -05:00
Ross Thompson
cce0571925
Fixed another bug with the atomic instrucitons implemention in the dcache.
2021-08-08 22:50:31 -05:00
Ross Thompson
d3be04b7de
Fixed another bug with AMO. If the CPU stalled as an AMO was finishing, the write to the
...
cache's SRAM would occur. Then in the next cycle the SRAM would be reread while stalled
providing the new update dated rather than the correct older value.
2021-08-08 11:42:10 -05:00
Ross Thompson
fc7016eea6
Fixed the AMO dcache bug. The subword write needs to occur before the AMO logic.
...
Fixed logic for trace update in the M and W stages. The M stage should not update if there
is an instruction fault.
2021-08-08 00:28:18 -05:00
Ross Thompson
0bfbcef8ab
Now past the CLINT issues.
2021-08-06 16:16:39 -05:00
Ross Thompson
9be10cdc8b
Partial conversion of the linux trace checking to read in the file in the Memory Stage so it is possible to overwrite registers, memory, and interrupts.
2021-08-06 16:06:50 -05:00
Ross Thompson
c749d08542
fixed the read timer issue but we still have problems with interrupts and i/o devices.
2021-08-06 10:16:06 -05:00
Ross Thompson
e166cc84ee
Patched up changes for wally-pipelined.do and wally-buildroot.do to support moved common testbench files.
2021-07-30 14:24:50 -05:00
Ross Thompson
74fba4bb06
Moved the test bench modules to a common directory.
2021-07-30 14:16:14 -05:00
Ross Thompson
3e916da36e
Removed the hardware page table walker fault state from the icache so that the icache will only unstall CPU for 1 cycle.
...
In the dcache we added a register to save the load read data in the event an itlb miss occurs concurrently with
the load in the memory stage. Under this situation we need to record the load ReadDataM into a temporary register,
SavedReadDataM. At this time the CPU is stall; however the walker is going to change the address in the dcache
which destroys this data. When leaving the PTW_READY state via a walker instruction fault or ITLB write we select
this SavedReadDataM so that the CPU can capture it.
2021-07-22 19:42:19 -05:00
Ross Thompson
551e3491af
Moved the ReadDataW register into the datapath.
...
The StallW from the hazard unit controls this.
Previously it was in the dcache and controlled by both the HPTW and hazard unit.
This caused an issue when the CPU expected the data to stay constant while
stalled, but the HPTW was causing the data to be modified.
2021-07-22 14:52:03 -05:00
Ross Thompson
3dd89a7e62
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
2021-07-22 10:38:24 -05:00
Ross Thompson
25a8920a69
Tested all numbers of ways for dcache 1, 2, 4, and 8.
2021-07-22 10:38:07 -05:00
bbracker
d3059dd04c
fix UART RX FIFO bug where tail pointer can overtake head pointer
2021-07-22 02:09:41 -04:00
bbracker
57a2917997
make address translator signals visible in waveview
2021-07-21 20:07:49 -04:00
Ross Thompson
313bc5255c
Improved address bus names and usages in the walker, dcache, and tlbs.
...
Merge branch 'walkerEnhance' into main
2021-07-21 14:55:09 -05:00
Ross Thompson
e0990535e1
Fixed remaining bugs in 2 way set associative dcache.
2021-07-21 10:35:23 -05:00
Ross Thompson
14e949d6e3
Partially working 2 way set associative d cache.
2021-07-20 17:51:42 -05:00
bbracker
1aeef4e7d1
remove busybear from regression because it is not keeping up with buildroot's changes to testbench-linux
2021-07-19 16:22:05 -04:00
bbracker
cd469035be
make testbench check the same CSRs that QEMU logs; change CLINT to reset MTIMECMP to -1 so that we don't instantly get a timer interrupt upon reset
2021-07-19 15:13:03 -04:00
Ross Thompson
9f76e1d64d
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
2021-07-19 12:32:35 -05:00
Ross Thompson
b61dad4b83
Fixed a complex bug in the dcache, where back to back loads would lose data on the load before a stall occurred. The solution was to modify the logic for SelAdrM in the dcache so that a stall would cause the SRAM to reread the address in the Memory stage rather than Execution stage. This also required updating the ReadDataWEn control so it is always enabled on ~StallW.
2021-07-19 12:32:16 -05:00
bbracker
f31a0ded75
change buildroot expectations to match reality
2021-07-19 13:20:53 -04:00
Ross Thompson
4d53b9002f
Broken.
...
Possible change to walker, dcache, tlb addressing.
Improves the naming of address signals.
But has a problem when the walker finishes the dcache does not get the correct
address on the cycle the DTLB is updated. This leads to incorrect index
selection in the dcache.
2021-07-19 10:33:27 -05:00
