Matthew Naylor
b734beec06
Update build instructions
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The emulator now requires an ELF file even when running ground tests.
(The ELF contains the tohost and fromhost addresses for communication
with the FESVR.)
2016-05-26 14:42:26 +01:00
Andrew Waterman
a2b9d337b6
No need for full-throughput queues in NastiErrorSlave
2016-05-26 01:03:40 -07:00
Andrew Waterman
2ece3e6102
Use Mem for ReorderQueue data
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This might improve FPGA QoR.
2016-05-26 01:02:56 -07:00
Andrew Waterman
ddfa30e215
Work around zero-width wire limitations
2016-05-26 00:48:54 -07:00
Andrew Waterman
0c50bfcfb3
Work around more zero-width wire cases
2016-05-25 21:47:48 -07:00
Andrew Waterman
22568de5f3
Work around another zero-width wire limitation
2016-05-25 21:42:02 -07:00
Andrew Waterman
e2755a0f0a
Work around zero-width wire limitation in HTIF
2016-05-25 20:39:53 -07:00
Andrew Waterman
3e238adc67
rtc: fix acquire message type check
2016-05-25 20:37:48 -07:00
Andrew Waterman
40f38dde63
Work around lack of zero-width wires in D$
2016-05-25 19:44:31 -07:00
Wesley W. Terpstra
976d4d3184
ahb: AHB parameters should match TileLink parameters by default
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Closes #116
2016-05-25 18:01:25 -07:00
Andrew Waterman
ec0d178010
Support M-mode-only implementations
2016-05-25 15:40:53 -07:00
Andrew Waterman
00ea9a7d82
Remove most of mstatus when user mode isn't supported
2016-05-25 15:37:32 -07:00
Andrew Waterman
5442b89664
Remove unnecessary muxes in RV32 MulDiv
2016-05-25 14:27:02 -07:00
Andrew Waterman
9aa724706e
Don't include RV64 instructions in RV32 decode table
2016-05-25 14:26:45 -07:00
Wesley W. Terpstra
7f1792cba3
ahb: backport bridge to chisel2
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Closes #47
2016-05-25 13:40:24 -07:00
Andrew Waterman
da105a5944
Don't allow travis to recurse through submodules
2016-05-25 13:27:49 -07:00
Wesley W. Terpstra
1c8745dfd2
ahb: backport to chisel2
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Merges #16
2016-05-25 12:11:26 -07:00
Wesley W. Terpstra
da566e7d6a
build: use local sbt when building firrtl
2016-05-25 11:48:03 -07:00
Andrew Waterman
e82c080c3c
Add blocking D$
2016-05-25 11:09:50 -07:00
Andrew Waterman
a8462d3cfc
bump chisel
2016-05-25 11:09:50 -07:00
Matthew Naylor
213bb26367
Drive invalidate_lr signal
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The DCache input for invalidating LR reservations was dangling. Now
we wire it to false.
2016-05-25 13:27:12 +01:00
Donggyu
a9599302bd
fix cloneType in nasti.scala ( #14 )
2016-05-24 17:10:17 -07:00
Andrew Waterman
5bc78aba99
Merge pull request #15 from terpstra/ahb
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Ahb
2016-05-24 17:06:03 -07:00
Andrew Waterman
c49cb10c74
Merge pull request #42 from terpstra/ahb
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Ahb
2016-05-24 17:02:15 -07:00
Andrew Waterman
4605b616c1
Fix bug in D$ AMO/storegen logic
2016-05-24 16:26:07 -07:00
Andrew Waterman
88cc91db75
Ignore way_en in MetadataArray for direct-mapped caches
2016-05-24 15:47:09 -07:00
Andrew Waterman
5dac7b818d
Support set associativity in blocking D$
2016-05-24 15:45:52 -07:00
Andrew Waterman
e0addb5723
Support uncached AMOs in blocking D$
2016-05-24 15:45:35 -07:00
Andrew Waterman
f14d87e327
Support larger I$ sets when VM is disabled
2016-05-24 15:44:59 -07:00
Andrew Waterman
3b35c7470e
Add uncached support to blocking D$
2016-05-24 15:05:41 -07:00
Andrew Waterman
42f079ce57
JAL requires DW_XPR
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This has been benign so far because of how the logic minimization worked.
2016-05-24 15:05:41 -07:00
Andrew Waterman
b92c73e361
Add LR/SC to blocking D$
2016-05-24 15:05:41 -07:00
Andrew Waterman
0d93d1a1a0
Clean up pending store logic a bit
2016-05-24 15:05:41 -07:00
Andrew Waterman
0b8de578d4
Add additional D$ store buffering to prevent structural hazards
2016-05-24 15:05:41 -07:00
Andrew Waterman
354cb2d5ec
Don't stall I$ response when resolving a branch misprediction
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This avoids a fetch bubble.
Not clear if this is the best way to do it. Perhaps this change should
instead be made to Frontend (i.e., ignore resp.ready when req.valid is
high), but that might exacerbate a critical path.
2016-05-24 15:05:41 -07:00
Andrew Waterman
d7790ac6a4
WIP on blocking D$
2016-05-24 15:05:41 -07:00
Andrew Waterman
335e2c8a1e
Support disabling atomics extension
2016-05-24 15:05:41 -07:00
Andrew Waterman
765b90f6a4
Stall on D$ lockups less conservatively
2016-05-24 15:05:41 -07:00
Andrew Waterman
a3061047e3
Instantiate blocking D$ when NMSHRS=0
2016-05-24 15:05:41 -07:00
Andrew Waterman
80482890fd
Don't rely on tag value for nacks
2016-05-24 15:05:41 -07:00
Wesley W. Terpstra
e19c5e5d2c
IOMSHR: support atomic operations
2016-05-24 15:00:50 -07:00
Wesley W. Terpstra
a012341d96
ahb: TileLink => AHB bridge, including atomics and bursts
2016-05-24 14:58:27 -07:00
Wesley W. Terpstra
ace9362d81
ahb: amoalu does not need so many parameters! (i want to reuse it)
2016-05-24 14:58:27 -07:00
Wesley W. Terpstra
b921bae107
ahb: eliminate trait abused for constants
2016-05-24 14:20:45 -07:00
Wesley W. Terpstra
200c69c106
ahb: support hmastlock acquistion of crossbar
2016-05-24 14:20:45 -07:00
Wesley W. Terpstra
e1e8eda419
ahb: add a test SRAM
2016-05-24 14:20:42 -07:00
Wesley W. Terpstra
1db40687c6
ahb: eliminate now-unnecesary non-standard hreadyin
2016-05-24 14:14:22 -07:00
Wesley W. Terpstra
15cad8414d
ahb: put signals in the order they appear in signal traces in the spec
2016-05-24 14:14:22 -07:00
Wesley W. Terpstra
f30f8d9f79
ahb: reduce obsolete degenerate cases of a crossbar
2016-05-24 14:14:22 -07:00
Wesley W. Terpstra
0368b6db6b
ahb: replace defective crossbar with a functional one
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The previous crossbar had the following bugs:
1. a bursting master could be preempted
the AHB-lite spec requires a slave receive the entire burst
2. a waited master could be replaced
the AHB-lite spec requires haddr/etc to remain unchanged
3. hmastlock did no ensure exclusive access
atomic operations could be pre-empted
2016-05-24 14:14:22 -07:00