riscv/rocket-chip
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198 Commits

Author SHA1 Message Date
Andrew Waterman
0369b05deb move replays to writeback stage 2012-01-17 21:12:31 -08:00
Andrew Waterman
1c8f496811 fix fpga build 2012-01-13 20:04:11 -08:00
Andrew Waterman
addfe55735 add FPGA memory generator script 2012-01-13 18:19:08 -08:00
Andrew Waterman
acf3134e80 minor control logic cleanup 2012-01-12 14:19:18 -08:00
Andrew Waterman
4807d7222b use replay to handle I$ misses 
this eliminates a long path in the fetch stage
 2012-01-11 19:20:20 -08:00
Andrew Waterman
1a7bfd4350 remove icache req_rdy signal 2012-01-11 18:27:11 -08:00
Andrew Waterman
bcb55e581a remove host.start signal, use reset instead 2012-01-11 17:49:32 -08:00
Andrew Waterman
92dda102b6 slight control logic cleanup 2012-01-11 16:56:40 -08:00
Andrew Waterman
938b142d64 require writes to memory to be uninterrupted 2012-01-03 18:41:53 -08:00
Andrew Waterman
142dfc6e07 made tohost/fromhost 64 bits wide 2012-01-03 15:09:08 -08:00
Andrew Waterman
20aee36c96 move PCR writes to WB stage 2012-01-02 15:42:39 -08:00
Andrew Waterman
3045b33460 remove second RF write port 
load miss writebacks are treated like mul/div now.
 2012-01-02 02:51:30 -08:00
Andrew Waterman
ffe23a1ee8 fix WAW hazard handling 2012-01-02 00:25:11 -08:00
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