David Harris
c316bff15a
subword read and csrc lint cleanup
2021-10-23 09:29:15 -07:00
David Harris
28d8f6d5cf
FMA and CSRC lint cleanup
2021-10-23 09:20:24 -07:00
David Harris
e2e950ac0f
Cleaned up LINT erors
2021-10-23 06:28:49 -07:00
David Harris
3bc985d230
Changed some flops to settable
2021-10-18 17:05:29 -07:00
David Harris
0516ee768b
replaced flopenl with flopenr when clearing to 0
2021-10-18 16:53:18 -07:00
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
bbracker
bb84354a47
fixed bug where M mode was sensitive to S mode traps
2021-09-07 19:14:39 -04:00
Ross Thompson
0cc47f3daf
Modified the preformance counter's InstRet to include ECALL and EBREAK by changing the hazard logic so these instructions don't self flush the W stage.
2021-08-23 15:46:17 -05:00
Ross Thompson
c31b7b4dc5
Wally previously was overcounting retired instructions when they were flushed.
...
InstrValidM was used to control when the counter was updated. However this is
not suppress the counter when the instruction is flushed in the M stage.
2021-08-23 12:24:03 -05:00
Ross Thompson
2825074114
Confirmed David's changes to the interrupt code.
...
When a timer interrupt occurs it should be routed to the machine interrupt
pending MTIP even if MIDELEG[5] = 1 when the current privilege mode is
Machine. This is true for all the interrupts. The interrupt should not be
masked even though it is delegated to a lower privilege. Since the CPU
is currently in machine mode the interrupt must be taken if MIE.
Additionally added a new qemu script which pipes together all the parsing and
post processing scripts to produce the singular all.txt trace without the
massivie intermediate files.
2021-08-22 21:36:31 -05:00
David Harris
4677b4bb38
possible interrupt code
2021-08-22 17:02:40 -04:00
Ross Thompson
55fda4de62
Switched ExceptionM to dcache to be just exceptions.
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Added test bench logic to hold forces until the W stage is unstalled.
2021-08-13 15:53:50 -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
Kip Macsai-Goren
c69a5dc8a6
fixed issue with tlbflush remaining high during a stalled sfence instruction
2021-07-21 17:43:36 -04:00
Ross Thompson
365485bd8b
Added performance counters for dcache access and dcache miss.
2021-07-19 22:12:20 -05:00
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
David Harris
a67292b5f3
trap.sv comment cleanup
2021-07-17 16:01:07 -04:00
David Harris
c1c3249709
trap.sv cleanup
2021-07-17 15:57:10 -04:00
David Harris
e182cac9bc
hptw: Removed NonBusTrapM from LSU
2021-07-17 15:24:26 -04:00
David Harris
2f81e4c70d
hptw: Removed NonBusTrapM from LSU
2021-07-17 15:22:24 -04:00
Ross Thompson
fa26aec588
Merge branch 'main' into dcache
2021-07-15 11:55:20 -05:00
Ross Thompson
f4295ff097
Separated interruptM into PendingInterruptM and InterruptM. The d cache now takes in both exceptions and PendingInterrupts.
...
This solves the committedM issue.
2021-07-14 15:00:33 -05:00
Katherine Parry
ca19b2e215
Fixed writting MStatus FS bits
2021-07-13 13:22:04 -04:00
Katherine Parry
efdec72df1
Fixed writting MStatus FS bits
2021-07-13 13:20:30 -04:00
David Harris
b5dddec858
Fixed InstrValid from W to M stage for CSR performance counters
2021-07-13 13:19:13 -04:00
David Harris
5c2f774c35
Simplified tlbmixer mux to and-or
2021-07-08 23:34:24 -04:00
David Harris
74b6d13195
Fixed missing stall in InstrRet counter
2021-07-08 20:08:04 -04:00
David Harris
032c38b7e7
MMU produces page fault when upper bits aren't equal. Renamed input to MMU to be 'Address' and moved translation mux into MMU out of TLB
2021-07-06 15:29:42 -04:00
Ross Thompson
412691df2d
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
2021-07-06 13:45:20 -05:00
Ross Thompson
3345ed7ff4
Merged several of the load/store/instruction access faults inside the mmu.
...
Still need to figure out what is wrong with the generation of load page fault when dtlb hit.
2021-07-06 13:43:53 -05:00
Abe
8854532a79
Disabled MCOUNTINHIBIT to enable csr counters (changed to 32'h0 on line 140)
2021-07-06 12:37:58 -04:00
David Harris
f805aea236
Implemented TSR, TW, TVM, MXR status bits
2021-07-06 01:32:05 -04:00
David Harris
8b23162d6d
Fixed adrdecs to use Access signals for TIMs
2021-07-05 23:42:58 -04:00
David Harris
6bac566bb7
Added support for TVM flag in CSRS and to disabl TLB when MEM_VIRTMEM = 0
2021-07-05 20:35:31 -04:00
David Harris
b23192cf1b
Gave names to for loops in generate blocks for ease of reference
2021-07-04 18:52:16 -04:00
David Harris
7e22ae973e
Fixed MPRV and MXR checks in TLB
2021-07-04 13:20:29 -04:00
David Harris
67e191c6f3
Added support for PMP lock bits in csrm and repartitioned design to pass around 8-bit PMPCFG entries
2021-07-04 11:39:59 -04:00
David Harris
0bd18ff662
Fixed PMPCFG read faults
2021-07-02 17:08:13 -04:00
David Harris
c85e0df1ff
Optimized PMP checker logic and added support for configurable number of PMP registers
2021-07-02 11:04:13 -04:00
bbracker
2155a4e485
Revert "fixed forwarding"
...
This reverts commit 86e369df52
2021-06-24 17:39:37 -04:00
bbracker
86e369df52
fixed forwarding
2021-06-24 11:20:21 -04:00
David Harris
1ec90a5e1f
Reversed [0:...] with [...:0] in bus widths across the project
2021-06-21 01:17:08 -04:00
David Harris
d2ec04564b
Cleaned up fcsr code and added _SUPPORTED to optionally disable peripherals
2021-06-20 22:59:04 -04:00
bbracker
23f479d225
remove OVP_CSR_CONFIG because it is an alias of BUSYBEAR
2021-06-20 22:38:25 -04:00
bbracker
83a0a37f8e
make xCOUNTEREN what buildroot expects it to be
2021-06-20 09:22:31 -04:00
David Harris
336936cc39
Cleaned up name of MTIME register in CSRC
2021-06-18 07:53:49 -04:00
bbracker
2bee4eabab
added MTIME and MTIMECMP as read-only CSRs; this likely is not the final version
2021-06-17 12:09:10 -04:00
bbracker
b65adbea63
enable TIME CSR for 32 bit mode as well
2021-06-17 11:34:16 -04:00
bbracker
5a661a7392
provide time and timeh CSRs based on CLINT's counter
2021-06-17 08:38:30 -04:00
