riscv/rocket-chip
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481 Commits 1 Branch 0 Tags 13 MiB
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104 Commits

Author SHA1 Message Date
Andrew Waterman
27ddff1adb simplify and improve multiplier 2012-10-16 02:24:37 -07:00
Huy Vo
0a97d6ab4d type casting 2012-07-18 13:03:35 -07:00
Andrew Waterman
4e44ed7400 allow back pressure on IPI requests 2012-07-17 22:55:40 -07:00
Huy Vo
fd95159837 INPUT/OUTPUT orderring swapped 2012-07-12 18:16:57 -07:00
Huy Vo
7408c9ab69 removing wires 2012-05-24 10:42:39 -07:00
Henry Cook
622a801bb1 Refactored cpu/cache interface to use nested bundles 2012-05-02 11:54:28 -07:00
Andrew Waterman
7f254d9670 refine FP bugfixes 2012-04-01 14:52:33 -07:00
Huy Vo
c7c35322c2 two bug fixes to fpu 2012-03-31 22:23:51 -07:00
Yunsup Lee
a70f0414fa fix a workaroundable bug 2012-03-26 20:51:54 -07:00
Andrew Waterman
86d56ff67b refactor cpu/i$/d$ into Tile (rather than Top) 2012-03-24 16:57:28 -07:00
Andrew Waterman
54fa6f660d new supervisor mode 2012-03-24 13:03:31 -07:00
Yunsup Lee
aaed0241af get rid of vxcptwait 2012-03-21 15:09:04 -07:00
Andrew Waterman
a47eeb9571 retime D$ bypass into beginning of EX stage 2012-03-16 18:35:54 -07:00
Yunsup Lee
b19d783fbd add vector irq handler 2012-03-14 14:15:28 -07:00
Yunsup Lee
040d62f372 refactored vector exception handling interface 2012-03-13 23:45:34 -07:00
Yunsup Lee
b100544b25 datapath to read out vector state 2012-03-13 23:45:34 -07:00
Yunsup Lee
a1b30282dd major refactoring on vector exception interface 2012-03-09 01:09:22 -08:00
Yunsup Lee
d4ec7ff4d9 refined vector exception interface 2012-03-03 16:11:54 -08:00
Yunsup Lee
e28a551368 refactor code related to vector exceptions 
- revisied interfaces
- new instructions
 2012-03-03 15:15:00 -08:00
Yunsup Lee
1054cec087 add vec countq interface 2012-03-02 00:43:32 -08:00
Yunsup Lee
8678b3d70c clean up ioDecoupled/ioPipe interface 2012-03-01 20:48:46 -08:00
Yunsup Lee
bfd0ae125e upgrade to new rocket/vu memory interface, fix amo nack bug in hellacache 2012-02-26 23:46:51 -08:00
Andrew Waterman
e12b9eae93 remove ext_mem interface 
hindsight is 20/20
 2012-02-26 18:53:39 -08:00
Andrew Waterman
2d04664a98 simplify cpu-cache interface 2012-02-26 18:26:29 -08:00
Yunsup Lee
94ba32bbd3 change package name and sbt project name to rocket 2012-02-25 17:09:26 -08:00
Yunsup Lee
946e0c6e4e add vector exception infrastructure 2012-02-25 16:37:56 -08:00
Yunsup Lee
3839e3a318 massive refactoring of vector constants 2012-02-25 15:55:36 -08:00
Yunsup Lee
a1600d95db fix bug related to waddr and wdata in wb stage 
for the instructions which don't use waddr/wdata for writeback, the contents were getting overwritten by the ll ops
it manifested itself after cp imul were sharing the alu with the vu
 2012-02-25 12:21:10 -08:00
Andrew Waterman
4121fb178c clean up mul/div interface; use VU mul if HAVE_VEC 2012-02-24 19:22:35 -08:00
Andrew Waterman
f939088be1 move datapath control signals into control unit 
because that's where control signals go
 2012-02-23 16:52:52 -08:00
Andrew Waterman
cfd79c731b add resp_type to ext_mem interface 2012-02-21 17:42:00 -08:00
Andrew Waterman
7034c9be65 new htif protocol and implementation 
You must update your fesvr and isasim!
 2012-02-19 23:15:45 -08:00
Yunsup Lee
32bdf5098a refactor vector control logic & datapath in the rocket core 2012-02-15 13:30:22 -08:00
Yunsup Lee
6bdf9dc513 hwacha integration: now it compiles correctly! 2012-02-14 23:34:57 -08:00
Andrew Waterman
069037ff3a add FP recoding 2012-02-12 23:31:50 -08:00
Andrew Waterman
08b6517a23 add FP ops mftx, mxtf, mtfsr, mffsr 2012-02-12 20:12:53 -08:00
Andrew Waterman
9bb1558a34 WIP on FPU 2012-02-12 04:36:01 -08:00
Andrew Waterman
50a283d311 move store data generation into EX stage 
doing so removes it from the critical path of FP store unrecoding.
 2012-02-12 01:35:55 -08:00
Andrew Waterman
725190d0ee update to new chisel 2012-02-11 17:20:33 -08:00
Andrew Waterman
f8b937d590 fix 32-bit divider bug 
thanks, torture!

also, tidied up the code a bit.
 2012-02-09 03:47:59 -08:00
Yunsup Lee
f47d888feb vvcfgivl and vsetvl works 2012-02-09 02:35:21 -08:00
Andrew Waterman
92493ad153 fix mul/div kill bug 
occasionally, an in-progress multiply or divide could be
erroneously killed, tying up the register forever.
 2012-02-09 02:26:03 -08:00
Andrew Waterman
128ec567ed make BTB fully associative; don't use it for JALR 
JALR created a long path from the ALU in execute stage
to an address comparator to the next-PC mux.  the benfit
was close to nil, anyway.
 2012-02-09 01:34:00 -08:00
Yunsup Lee
fcc8081c4d hook up the vector command queue 2012-02-09 01:28:16 -08:00
Andrew Waterman
8b6b0f5367 add external memory request interface for vec unit 2012-02-08 22:30:45 -08:00
Yunsup Lee
9285a52f25 initial vu integration 2012-02-08 21:43:45 -08:00
Andrew Waterman
b3f6f9a5fd fix BTB misprediction check for negative addresses 
also index BTB with PC, not PC+4
 2012-02-08 15:05:28 -08:00
Andrew Waterman
e9da2cf66a improve id/ex datapath 
move operand selection into decode stage; simplify bypassing
 2012-02-08 06:47:26 -08:00
Andrew Waterman
d471a8b2da arbitrate for LLFU writebacks in MEM stage 2012-02-08 04:21:05 -08:00
Andrew Waterman
5403d069e9 add fp loads/stores 2012-02-07 23:54:25 -08:00