Andrew Waterman
d31b26c342
Clean up handling of icache's io.cpu.npc signal
2015-05-18 18:22:48 -07:00
Christopher Celio
b09832f1b5
ICache now returns the "next PC" signal.
...
useful for other modules that need access to the fetch PC on the
cycle it is sent to the SRAM.
2015-05-07 04:53:05 -07:00
Henry Cook
a315fe93c1
simplify ClientMetadata.makeRelease
2015-04-20 10:46:24 -07:00
Henry Cook
3048f4785a
HeaderlessTileLinkIO -> ClientTileLinkIO
2015-04-17 16:56:53 -07:00
Henry Cook
49f1c0aa7b
moved ecc lib to uncore
2015-04-13 15:58:10 -07:00
Henry Cook
91e882e3f8
Use HeaderlessTileLinkIO
2015-04-13 15:58:10 -07:00
Christopher Celio
517d0d4b89
feedback on PR
2015-04-12 18:44:03 -07:00
Christopher Celio
4d6ebded02
Added assert to nbdcache
2015-04-11 02:58:34 -07:00
Christopher Celio
a564f08702
Rename dmem.sret signal to more accurate invalidate_lr
2015-04-11 02:26:33 -07:00
Christopher Celio
8fc2d38ca9
Removed unnecessary signal in CSRIO
2015-04-11 02:20:34 -07:00
Christopher Celio
2f88c5ca9d
Renamed PCR to CSR
2015-04-11 02:16:44 -07:00
Christopher Celio
11dbd4221a
Fixed front-end to support four-wide fetch.
2015-04-10 17:53:47 -07:00
Andrew Waterman
9ade0e41cc
Integrate divide/sqrt unit
2015-04-04 16:39:17 -07:00
Andrew Waterman
fe27b9b1b2
Support writing sstatus.fs even without an FPU
2015-04-04 15:20:18 -07:00
Andrew Waterman
bce62d5774
Update PTE format to reflect reserved bits
2015-04-04 15:19:15 -07:00
Andrew Waterman
d912ea265e
New virtual memory implementation (Sv39)
2015-03-27 16:20:59 -07:00
Andrew Waterman
faada5f110
Mask off LSBs of sepc/mepc/stvec
...
Therefore, they cannot generate misaligned instruction exceptions.
When a misaligned instruction exception does occur, mbadaddr
retains the misaligned PC bits, so no information is actually lost.
2015-03-25 00:20:58 -07:00
Andrew Waterman
543ac91cf2
Misaligned fetches can't happen at the I$ anymore
...
They are caught before the I$ ever sees them, so leverage that fact.
2015-03-24 23:55:43 -07:00
Andrew Waterman
90b31586ff
Misc. CSR fixes/improvements
...
- Support RV32 mstatus register
- Don't ignore mstatus.stie bit
- Support custom M-mode R/W CSRs for Raven chip
2015-03-24 23:50:18 -07:00
Andrew Waterman
822698b567
support disabling supervisor mode (via UseVM parameter)
2015-03-24 19:32:45 -07:00
Andrew Waterman
0332c1e7fe
Reduce latency of page table walks
...
A small cache in the PTW caches non-leaf PTEs, reducing latency and D$ misses.
2015-03-24 18:58:38 -07:00
Andrew Waterman
31d17cbf86
Hard-wire LSB of JALR to 0, as sent to BTB
2015-03-21 00:16:34 -07:00
Yunsup Lee
53617d6df5
fix long-standing dcache bug
...
have to initialize register, if it is used the same cycle it is begin written
2015-03-17 21:45:17 -07:00
Yunsup Lee
5b4653b621
fix rocc exception/s bit
2015-03-17 05:08:23 -07:00
Andrew Waterman
66388be1ce
Merge [shm]call into ecall, [shm]ret into eret
2015-03-17 02:24:41 -07:00
Andrew Waterman
2c875555a2
Separate exception return control from exception control
2015-03-17 00:14:32 -07:00
Andrew Waterman
e85c54cc4b
New privileged ISA implementation
2015-03-14 02:49:07 -07:00
Yunsup Lee
ebbd14254c
uncached port should be a HeaderlessUncachedTileLinkIO type
2015-03-13 02:12:23 -07:00
Henry Cook
51e4cd7616
Added UncachedTileLinkIO port to RocketTile, simplify arbitration
2015-03-12 16:30:04 -07:00
Yunsup Lee
ea018b3d84
stall rocket decode when not rocc ready
2015-03-11 22:33:03 -07:00
Colin Schmidt
e293d89035
fix decodelogic bug for bitwidths >= 64 s/1L/BigInt(1)/
2015-03-10 10:28:05 -07:00
Henry Cook
95aa295c39
Use HeaderlessTileLinkIO to cut down on unconnected port errors in VCS
2015-03-09 16:34:43 -07:00
Henry Cook
b36d751250
sret bugfix: bypass arbiter
2015-03-05 13:14:16 -08:00
Christopher Celio
06dea3790a
Removed sret from ptw; sret now comes thru io.cpu to dcache
2015-03-03 16:50:41 -08:00
Christopher Celio
5d07733057
Removed TLBPTWIO from the io.cpu bundle for icache/dcache
2015-03-03 16:40:39 -08:00
Henry Cook
1e0c16c557
new metadata api
2015-02-28 17:00:32 -08:00
Henry Cook
0b131173e6
WritebackUnit multibeat control logic bugfix
2015-02-16 10:59:57 -08:00
Henry Cook
aa46b8b72d
Slightly refactor TLBResp
2015-02-03 19:32:37 -08:00
Stephen Twigg
3d35ccd401
Explicitely convert results of Bits Muxes to UInt
...
Chisel updated to emit SInt result instead of UInt so this commit addresses this change.
2015-02-03 18:10:54 -08:00
Henry Cook
741e6b77ad
Rename some params, use refactored TileLink
2015-02-01 20:37:31 -08:00
Scott Beamer
00e074cdd9
fixes slight bug for non-power of 2 number of ras entries
2015-01-29 15:29:25 -08:00
Andrew Waterman
a98127c09e
Merge branch 'ss-frontend'
2015-01-04 20:26:38 -08:00
Andrew Waterman
b70f7683d3
Merge branch 'master' into ss-frontend
...
Conflicts:
src/main/scala/ctrl.scala
2015-01-04 19:59:18 -08:00
Andrew Waterman
87ad1a5703
More control cleanup
2015-01-04 19:46:01 -08:00
Andrew Waterman
2aee85cb11
Flush pipeline from MEM stage
...
This means we no longer have to rely on the instruction behind a serializing
instruction being valid, simplifying the control. But we have to be a
little more cautious when flusing the I$/ITLB/BTB.
2015-01-04 16:40:16 -08:00
Andrew Waterman
94b75c7cb1
Continue refactoring control
2015-01-04 15:32:05 -08:00
Andrew Waterman
6181de4cc9
Much refactor, so control
2015-01-03 13:34:38 -08:00
Henry Cook
1cb65d5ec1
%s/master/manager/g
2014-12-29 22:56:18 -08:00
Henry Cook
77e5e6b561
refill bug
2014-12-17 19:29:28 -08:00
Henry Cook
08dcf4c6ca
refactor cache params
2014-12-17 14:28:05 -08:00