David Harris
b3bded9e6c
Added more pipeline stage suffixes to divider
2021-10-02 22:54:01 -04:00
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.
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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
6a9fa2fae3
Fixed bugs I introduced to the icache.
2021-08-27 15:00:40 -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
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.
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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
e141a00934
Cleaned up the linux testbench by removing old code and signals.
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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
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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.
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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
