riscv/rocket-chip
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2279 Commits

Author SHA1 Message Date
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