Andrew Waterman
eb657dd250
reduce superfluous replays
...
we only replay after a cache miss if we mis-scheduled the use of a load.
2012-01-01 21:28:38 -08:00
Andrew Waterman
efc623cc36
validate BTB address and use BTB for J/JAL/JR/JALR
...
even if we weren't using the BTB for JR/JALR, we'd need to
flush the BTB on FENCE.I and on context switches, but
validating its result suffices instead.
2012-01-01 17:04:14 -08:00
Andrew Waterman
2f8fcebea0
remove datapath register resets resets
2012-01-01 16:09:40 -08:00
Andrew Waterman
f9160c53cf
fixes for correct verilog generation
2011-12-29 23:46:21 -08:00
Andrew Waterman
1028ff7d9b
fix multiplier bug
2011-12-29 23:45:09 -08:00
Andrew Waterman
d65e1a2eee
vlsi verilog compiles now but doesn't simulate
2011-12-20 22:08:27 -08:00
Andrew Waterman
38ea10a5f4
parameterized multiplier unrolling
2011-12-20 04:18:28 -08:00
Andrew Waterman
733fc8e65e
booth multiplier
2011-12-20 03:49:07 -08:00
Andrew Waterman
b5a8b6dc73
fix divider for RV32
2011-12-19 16:57:53 -08:00
Andrew Waterman
bcceb08373
add dummy mul_rdy signal
2011-12-17 07:30:47 -08:00
Andrew Waterman
96c78829b4
improve ALU and fix revealed emulator bug
2011-12-17 07:20:32 -08:00
Andrew Waterman
82700cad72
fix multiplier for rv32
2011-12-17 07:20:00 -08:00
Andrew Waterman
a8d0cd95e6
hellacache now works
2011-12-17 03:26:11 -08:00
Andrew Waterman
56c4f44c2a
hellacache returns!
...
but AMOs are unimplemented.
2011-12-12 06:49:39 -08:00
Yunsup Lee
0ea2704b80
new mftx instruction format
2011-12-12 03:23:12 -08:00
Andrew Waterman
8308345364
work in progress on hellacache
2011-12-10 07:01:47 -08:00
Andrew Waterman
ce201559f3
Support cache->cpu nacks one cycle after request
2011-12-10 00:42:09 -08:00
Andrew Waterman
c01e1f1cef
Don't replay from EX stage.
...
EX replays are now handled from MEM. We may move them to WB.
2011-12-09 19:42:58 -08:00
Andrew Waterman
218f63e66e
code cleanup/parameterization
2011-12-09 00:42:43 -08:00
Andrew Waterman
a87ad06780
Automatically infer rocketCAM address width
2011-12-06 02:05:40 -08:00
Rimas Avizienis
fa784d1d7d
made setReadLatency argument a parameter defined in consts.scala
2011-12-05 00:33:17 -08:00
Rimas Avizienis
ff95cacb55
icache/dcache tag+data arrays now implemented using Mem4()
...
however there seems to be a bug - readLatency needs to be set to 0
for C model to work, and 1 for Verilog model.
2011-12-04 01:18:38 -08:00
Rimas Avizienis
e894b79870
caches now use Mem4() memories for tag+data arrays
2011-12-03 19:41:15 -08:00
Rimas Avizienis
c580180b66
tweaks to cache/SRAM interface for TSMC65 SRAMs
2011-12-02 02:01:08 -08:00
Rimas Avizienis
e70b41241c
changed branch addr generation to get it off critical path
2011-12-02 01:56:17 -08:00
Rimas Avizienis
cf1965493b
renamed SRAM modules to match TSMC65 MC generated SRAMs
2011-12-01 13:14:33 -08:00
Rimas Avizienis
da2fdf4f85
fixed console i/o
2011-11-30 22:51:59 -08:00
Rimas Avizienis
b2894671f6
Merge branch 'master' of github.com:ucb-bar/riscv-rocket
2011-11-30 21:55:13 -08:00
Rimas Avizienis
bc44572d99
bugfixes due to new hcl jar file
2011-11-30 21:54:55 -08:00
Andrew Waterman
8f3927fdfa
queue data type is now templated
2011-11-30 18:08:26 -08:00
Rimas Avizienis
11f0e3daf4
more cleanup
2011-11-18 00:17:30 -08:00
Rimas Avizienis
c42d8149b7
moved PCR writeback to end of MEM stage, cleanup of dcache/dpath/ctrl
2011-11-17 23:50:45 -08:00
Rimas Avizienis
5a322ff00c
fixed dtlb bug (swapped r/w permissions), added fake mtfsr/mffsr/fld/fst instructions
2011-11-17 11:17:37 -08:00
Rimas Avizienis
80b4253318
fixed dcache amo bug, cleaned up testharness, added RDTIME instruction
2011-11-16 02:04:28 -08:00
Rimas Avizienis
886857fa47
writes of PC weren't being sign extended
2011-11-15 18:07:36 -08:00
Rimas Avizienis
fc0f20643a
cleanup
2011-11-15 18:06:41 -08:00
Rimas Avizienis
ae98956e6b
more amo fixes, added more options to testharness to control debug messages
2011-11-15 02:43:51 -08:00
Rimas Avizienis
82a636ff55
AMOADD, AMOAND, AMOOR, AMOSWAP working
2011-11-15 00:51:45 -08:00
Rimas Avizienis
48cec01710
updated riscv-bmarks and riscv-tests to build with new toolchain
2011-11-15 00:11:22 -08:00
Rimas Avizienis
db87924fbf
made eret instruction take an illegal inst exception when ET is set
2011-11-14 14:35:10 -08:00
Rimas Avizienis
cd6e463320
added ei and di instructions
2011-11-14 13:48:49 -08:00
Rimas Avizienis
b791010bb1
flush.i invalidates I$ & ITLB, writing PTBR invalidates both TLBs
2011-11-14 04:13:13 -08:00
Rimas Avizienis
890bfa7c48
added IPIs and timer interrupts
2011-11-14 03:24:02 -08:00
Rimas Avizienis
5b29765917
synced up with supervisor mode state in latest ISA simulator
2011-11-14 01:37:20 -08:00
Rimas Avizienis
9d3471a569
more cache fixes, more test harness debug output
2011-11-13 23:32:18 -08:00
Rimas Avizienis
67c7e7e28f
cache/tlb bugfixes, increased memory size to 256meg
2011-11-13 13:06:35 -08:00
Rimas Avizienis
29d44b8bc5
fixed typo that broke illegal instruction exception
2011-11-13 01:17:33 -08:00
Rimas Avizienis
7b3c34a341
regenerated instruction encodings using parse-opcodes
2011-11-13 00:59:02 -08:00
Rimas Avizienis
44419511b7
timer interrupt fixes
2011-11-13 00:32:08 -08:00
Rimas Avizienis
345f950eff
added timer interrupt support
2011-11-13 00:27:57 -08:00
