riscv/rocket-chip
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2357 Commits

Author SHA1 Message Date
Henry Cook
ad823ef43c subsystem: pbus crossing type 2018-02-23 13:52:18 -08:00
Henry Cook
5725e17969 subsystem: even more general coupler methods 2018-02-23 13:52:12 -08:00
Jacob Chang
87eed645d8
Fix JTAG cover description (#1248) 2018-02-23 12:13:31 -08:00
Henry Cook
5b1d72c776 subsystem: expose HasTiles Parameters 2018-02-22 23:46:08 -08:00
Henry Cook
099bbec666 subsystem: more buswrapper coupling methods 2018-02-22 23:45:21 -08:00
Bipul Talukdar
2e548c9ad2 Added functional covers 2018-02-22 23:20:12 -08:00
Andrew Waterman
aad75f2285 Implement misa.C proposal 
This proposal hasn't been adopted yet, but anything is better than the
current implementation, where clearing misa.C when the PC is misaligned
is effectively undefined.
 2018-02-22 15:12:19 -08:00
Andrew Waterman
c1ee31d133 Fix debug trigger point for stores 
In Rocket, debug triggers are supposed to happen before a store
occurs, rather than after.  Previously, we reported the exception
on the store's PC, but the store occurred anyway.  This probably
hasn't been problematic in practice because most stores are
idempotent.
 2018-02-22 14:56:57 -08:00
Henry Cook
78883d13e8 subsystem: add TLIdentity.gen and make wrappers more flexible 2018-02-21 18:22:06 -08:00
Henry Cook
eaa908d44f subsystem: more buswrapper methods 2018-02-21 14:52:59 -08:00
Henry Cook
e237f72539 subsystem: XSubsystemModule => XSubsystemModuleImp 2018-02-21 14:52:59 -08:00
Henry Cook
1af02f754e groundtest: fix filename 2018-02-21 14:52:59 -08:00
Henry Cook
030c6f0206 subsystem: bus wrappers now in BaseSubsystem 2018-02-21 14:52:59 -08:00
Henry Cook
b617e26c13 util: augment String and use to name couplers 2018-02-21 14:43:47 -08:00
Henry Cook
a6d3965491 tilelink: bus wrapper scopes called 'couplers' 2018-02-21 14:43:47 -08:00
Henry Cook
57edd7facf subsystem: streamline toTile and fromTile attachment 2018-02-21 14:43:47 -08:00
Wesley W. Terpstra
ef3addee7b diplomacy: put full module + instance path into graphml Description 2018-02-21 14:43:47 -08:00
Henry Cook
62aee56807 diplomacy: base instance names on ValName and module names on className 2018-02-21 14:43:47 -08:00
Henry Cook
3f436a7612 subsystem: new bus attachment api 2018-02-21 14:43:47 -08:00
Henry Cook
8462ea3d5b coreplex => subsystem 2018-02-21 14:42:24 -08:00
Andrew Waterman
8998a97ea1 Preserve WithRV32 behavior: FLEN = 32 2018-02-20 18:28:47 -08:00
Andrew Waterman
1dc1e2c099 support testing RV32D configs 2018-02-20 16:16:39 -08:00
Andrew Waterman
d4fb7ad6a2 DefaultRV32Config should provide fdiv/fsqrt 
This is a holdover from before we had built the functional unit.
 2018-02-20 16:16:39 -08:00
Andrew Waterman
b487448961 Add FPUParams.fLen option, decoupled from xLen 2018-02-20 16:16:39 -08:00
Andrew Waterman
5e35015651 Minor Rocket fixes to support fLen != xLen 2018-02-20 16:16:39 -08:00
Andrew Waterman
bd29184e11 debug: get beatBytes from pbus, not XLen 2018-02-20 16:16:39 -08:00
Andrew Waterman
62f9b84439 plic: get beatBytes from pbus, not XLen 2018-02-20 16:16:39 -08:00
Andrew Waterman
52e22a1dd8 clint: get beatBytes from pbus, not XLen 2018-02-20 16:16:39 -08:00
Andrew Waterman
1bac2cbdf8 Give Rocket priority over DTIM TL port 
The TL port can easily starve the processor, even at only 20% utilization,
because of a bad interaction with the pipeline.  Giving the processor
static priority is OK in practice, since <50% of instructions are loads
and stores in typical workloads.  Even if it executes 100% loads and stores,
it must eventually encounter an I$ miss, taken branch, or exception, so
even malicious code can't permanently starve the TL port.
 2018-02-20 11:23:10 -08:00
Megan Wachs
5affd3bec2 RegFieldDesc: fix the output produced for undescribed registers 2018-02-16 10:24:12 -08:00
Megan Wachs
cf7cd03d64
Merge pull request #1239 from freechipsproject/reduce_debug_flags 
Reduce Debug Module "flags"
 2018-02-16 08:53:41 -08:00
Megan Wachs
d72abb7a12
Debug: revert change to how flags are named 2018-02-15 21:49:32 -08:00
Wesley W. Terpstra
dcfbdabe60 CacheCork: better document edge conditions 2018-02-15 19:14:30 -08:00
Wesley W. Terpstra
ecd069dca4 tilelink: allow FIFO caches 
Probably not a smart thing to build, but not illegal!
 2018-02-15 19:09:37 -08:00
Wesley W. Terpstra
acecc407a5 HellaCache: we do NOT really support probe below the block size! 
If we did, you would somehow have to retain ownership of the
unprobed parts of the block, in case they happened to be dirty.
 2018-02-15 19:08:43 -08:00
Megan Wachs
c34b940d9a
ElaborationArtefacts: revert unintentional change 2018-02-15 14:23:54 -08:00
Megan Wachs
e0c3b22d61
RegFieldDesc: same string used to insert/compare 2018-02-15 14:23:27 -08:00
Megan Wachs
b95f68447f RegFieldDesc: Prevent different RegField JSONS from overwriting eachother. 2018-02-15 14:01:47 -08:00
Megan Wachs
64d3731e45 RegFieldDesc: don't put characters into names that need to be sanitized 2018-02-15 13:25:06 -08:00
Megan Wachs
197699b93a Debug: don't need to fully populate flags array 2018-02-15 13:23:51 -08:00
Wesley W. Terpstra
fa412246b3 Error: don't be an exception wrt. caching 
Prior to this PR, the error device was allowed to be cached by
multiple actors despite never probing any of them. This is a
pretty unusual set of properties that has caused us trouble
several times now in the past.

Let's instead put the Error device into one of two very well
established categories: a straight-up MMIO device or a tracked
memory region.
 2018-02-14 23:02:55 -08:00
Megan Wachs
de91672e9a RegFieldDesc: simplify the output RegFieldDesc JSON to just a list of reg fields 2018-02-12 08:32:52 -08:00
Megan Wachs
7bf0121f07 PLIC: correct some descriptions 2018-02-12 08:31:29 -08:00
Megan Wachs
08acbe1a29 RegFieldDesc: Clean up both descriptions and JSON presentations 2018-02-11 23:57:57 -08:00
Megan Wachs
5ab4204e8a RegField: the JSON will just leave things out of type None 2018-02-11 22:51:36 -08:00
Megan Wachs
3b44f380d8 TLRegMapper: emit a JSON file describing the register fields 2018-02-11 22:51:36 -08:00
Megan Wachs
256f8ffc6b Clint: Annotate regmap with RegFieldDesc 2018-02-11 21:33:09 -08:00
Megan Wachs
718c88a8f9 PLIC: Annotate regmap with RegFieldDescs 2018-02-11 21:05:17 -08:00
Megan Wachs
13b120fb01 Debug: Annotate regmaps with RegFieldDescs 2018-02-10 20:11:24 -08:00
Megan Wachs
7abf6e1c8a RegMapper: Update cover props to use new RegFieldDesc objects 2018-02-10 13:17:38 -08:00
Megan Wachs
4ab1585a78 Register Field: Add a more verbose description object 
Add versions of the RegField functions to take it in, and
update Example device to use it.
 2018-02-10 13:17:18 -08:00
Henry Cook
fe277cf6f0
Merge branch 'master' into auto-plusargs 2018-02-06 18:38:44 -08:00
Andrew Waterman
9f6d586e8c
Add PLIC covers (#1229) 
* Add another FPU hazard cover

* Add some PLIC covers
 2018-02-06 17:33:33 -08:00
Andrew Waterman
efc6c9cbd3 Let user of CSRFile decide when to set tval 
I also renamed badaddr to tval (the correct name).
 2018-02-06 14:05:03 -08:00
Andrew Waterman
a59fc3bdaa Teach MulDiv to do either mul-only or div-only by setting unroll=0 2018-02-06 14:03:17 -08:00
Andrew Waterman
69441930b5 Rationalize ALU function encoding 
MULHSU and MULHU should match their ISA funct3 encodings to slightly
reduce HW cost.
 2018-02-06 14:00:37 -08:00
solomatnikov
5294523551
Keep io.cpu.s1_data for visibility (#1218) 2018-01-31 14:31:42 -08:00
Henry Cook
7dad486707 util: updates to internal Generator API 2018-01-30 15:19:37 -08:00
Henry Cook
bd50a1a4bc config: remove deprecated Parameters.root 2018-01-30 11:52:44 -08:00
Henry Cook
46751bedeb config: MapParameters are back in style 2018-01-30 11:52:44 -08:00
Jacob Chang
f4853c4f63
Add cover properties to Core CSRs (#1212) 2018-01-30 00:01:19 -08:00
Andrew Waterman
b5ff853e86
Sign-extend the depc CSR (#1209) 2018-01-26 12:07:33 -08:00
Andrew Waterman
8d8e4e1399
Merge pull request #1196 from freechipsproject/interrupt-cover 
Cover all exceptions and interrupts
 2018-01-25 18:06:13 -08:00
Andrew Waterman
d2399b6d0e Cover all exceptions and interrupts 2018-01-25 16:14:56 -08:00
Jacob Chang
a749326deb
Add cover points to registers (#1208) 2018-01-24 21:37:24 -08:00
Andrew Waterman
7a0252fdfc Add some covers for FPU structural hazards 2018-01-23 16:32:03 -08:00
Andrew Waterman
a2ca82f92c Add VM covers 2018-01-23 16:13:35 -08:00
Wesley W. Terpstra
c32150b994
ResetCatchAndSync: work also in the context of a RawModule (#1202) 2018-01-19 19:45:52 -08:00
Wesley W. Terpstra
f6f5606f8e
diplomacy: run user instantiate() method after nodes are initialized (#1198) 2018-01-18 14:57:47 -08:00
Henry Cook
5cc1411e14
Merge pull request #1199 from freechipsproject/require-messages 
rocket: add address to tlb permissions require msgs
 2018-01-18 14:53:25 -08:00
Jack Koenig
bf5dd6dac3
Replace Parameters in cover with globally setable implementation (#1200) 
This change is made in anticipation of a proper coverage library
 2018-01-18 14:45:36 -08:00
Henry Cook
24c1235500 rocket: add address to tlb permissions require msgs 2018-01-18 10:31:51 -08:00
Wesley W. Terpstra
5854fb5f7c
SourceShrinker improvements (#1197) 
* SourceShrinker: preserve FIFO guarantees of slaves

* tilelink: document that Releases can use TtoT, BtoB, and NtoN

TtoT is needed for write-through caches.
 2018-01-17 18:02:19 -08:00
Megan Wachs
338e453a91
JTAG: Use new withClock way of overriding clocks (#1072) 
* JTAG: Use new withClock way of overriding clocks

the override clock way is deprecated

* JTAG: use withClock instead of override clock

* JTAG:  extend Module for ClockedCounter

* JTAG: Don't use deprecated clock constructs

* JTAG: Remove another override_clock

* Rename "NegativeEdgeLatch"

because it's not a latch, it's just a register on the negative edge of the clock.

* Use the appropriately named NegEdgeReg

* JTAG: Rename another NegativeEdgeLatch
 2018-01-17 13:59:05 -08:00
Schuyler Eldridge
355d3b15e8 Merge 'origin/master' into auto-plusargs 2018-01-16 15:45:53 -05:00
Jacob Chang
80ca018e3a
Add cover points for BusErrorUnit (#1193) 2018-01-15 18:00:29 -08:00
Schuyler Eldridge
04af785a5f Emit plusArgs for unit tests 
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@gmail.com>
 2018-01-15 17:54:40 -05:00
Schuyler Eldridge
09c1d034fa Explicitly name PlusArg serializers as *_cHeader 
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@gmail.com>
 2018-01-15 17:00:12 -05:00
Schuyler Eldridge
cfd49f87c1 Use longname for ElaborationArtefact emission 
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@gmail.com>
 2018-01-15 16:55:13 -05:00
Schuyler Eldridge
e52d52ae99 Link PlusArg to emulator command line options 
- adds a mutable singleton (PlusArgArtefacts) to store information
  about Rocket PlusArgs
- adds methods to PlusArgArtefacts to emit C snippets that are
  consumed by emulator.cc for correct argument parsing and help text
  generation
- emits snippets in $(CONFIG).plusArgs via BaseCoreplex-set
  ElaborationArtefacts
- modify emulator/Makefrag-verilator to include $(CONFIG).plusArgs
- cleanup help text (docstring) for existing PlusArgs

Signed-off-by: Schuyler Eldridge <schuyler.eldridge@gmail.com>
 2018-01-15 14:32:55 -05:00
Megan Wachs
5fe0bb0d6a Merge remote-tracking branch 'origin/master' into refactored_rbb 2018-01-09 21:34:14 -08:00
Henry Cook
f5211765e9
Merge pull request #1177 from freechipsproject/dont-touch-2 
Make more use of chisel3.experimental.DontTouch
 2018-01-09 15:13:55 -08:00
pentin-as
c152962642 Dual-port RAM replaced with single-port RAM for tag_array in HellaCache (#1181) 
In accordance with https://github.com/freechipsproject/chisel3/issues/752
 2018-01-09 13:06:43 -08:00
Henry Cook
15c54b1c5a tile: intSinkNode belongs in HasExternalInterrupts 2018-01-08 19:38:10 -08:00
Henry Cook
11e5b620f8 tile: disable more monitors on slave port 2018-01-08 18:42:25 -08:00
Henry Cook
5075a93e6c util: dontTouch work-around for zero width aggregates 2018-01-08 15:58:28 -08:00
Albert Huntington
7fc8337cdb
Merge pull request #1180 from freechipsproject/addrwregdesc 
Allow rwReg to pass name and description to RegField for documentation.
 2018-01-08 09:44:44 -08:00
Megan Wachs
a530646d15 Merge remote-tracking branch 'origin/master' into refactored_rbb 2018-01-08 09:11:27 -08:00
Henry Cook
4fd4ae38e3
Merge pull request #1176 from freechipsproject/fix-tl-port 
Fix TL MMIO port
 2018-01-05 20:37:44 -08:00
Megan Wachs
e6661a6982 Debug regressions: use a plusarg to enable remote bitbang. 2018-01-05 17:08:21 -08:00
Albert Huntington
8425086f98 Allow rwReg to pass name and description to RegField for documentation. 2018-01-05 16:59:58 -08:00
Megan Wachs
4449dd0baa Debug regressions: Add necessary config scripts 2018-01-05 16:03:59 -08:00
Megan Wachs
e82328336e Add in a SimJTAG to connect to OpenOCD's remote-bitbang interface. 
This is simpler than JTAGVPI and is supported better by Verilor.
It is also the same thing Spike uses.
 2018-01-05 16:02:52 -08:00
Henry Cook
b77b93b0b4 util: dontTouchPortsExcept 2018-01-05 14:06:00 -08:00
Andrew Waterman
000cde2f8a Make ErrorDevice UNCACHEABLE instead of UNCACHED 
...even though it still supports Acquire.  This avoids needing to flush
the D$ on FENCE.I because of the presence of the ErrorDevice.
 2018-01-05 14:00:42 -08:00
Andrew Waterman
ad0b9a0b1b Reduce cases in which FENCE.I must flush D$ 
Memory regions that are uncacheable or have get/put effects should not
reside in the D$, so there is no need to flush them.
 2018-01-05 13:58:14 -08:00
Henry Cook
4853d1355f rocket: dontTouch HellaCache.io.cpu.resp 2018-01-05 12:50:24 -08:00
Henry Cook
847efde385 coreplex: dontTouch the tile_inputs wire 2018-01-05 12:47:41 -08:00
Wesley W. Terpstra
f749e986cf coreplex: fix TL MMIO port example 2018-01-05 12:29:47 +01:00
Andrew Waterman
206892899f
Merge pull request #1171 from freechipsproject/fix-msb-check 
Enforce physical-address canonicalization
 2018-01-03 12:06:18 -08:00