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Commit Graph

54 Commits

Author SHA1 Message Date
Scott Johnson
9f0fda01b3 Fix Cadence Incisive compile warning
The SystemVerilog LRM (IEEE 1800-2012) clause 20.15.1 ($random
function) says: "The seed argument shall be an integral variable."

This fixes the following compile warning:

    rand_value = $random($urandom);
                       |
ncelab: *W,WRNOTL (/home/scottj/rocket-chip/vsrc/TestDriver.v,34|23): Argument to out parameter is not a legal lvalue.
2016-10-19 13:23:36 -07:00
Scott Johnson
dc4c375c7f Silence Verilog compile warning from Cadence Incisive 2016-10-17 15:44:24 -07:00
Andrew Waterman
7f429e8799 Simplify AsyncResetReg
No need for AsyncSetReg, as AsyncResetReg can be used exclusively with
inverted inputs.
2016-10-08 21:29:40 -07:00
Yunsup Lee
23c8b06d4a use $urandom as seed for $random 2016-10-03 17:56:30 -07:00
Yunsup Lee
5ff3d3d61c correctly initialize with seed 2016-10-02 17:31:32 -07:00
Megan Wachs
1e43512142 jtag: Actually apply the sticky bits 2016-09-29 13:49:34 -07:00
Megan Wachs
a4b81aebe0 jtag: Apply sticky bits for error and busy according to the current Debug Spec 2016-09-29 13:49:26 -07:00
Megan Wachs
45bd63fcc6 jtag: Prevent Debug RAM accesses from wrapping around, and bring the DTM closer to the Debug Spec 2016-09-29 13:49:14 -07:00
mwachs5
77a0f76289 Cleanup jtag dtm (#342)
* debug: Clean up Debug TransportModule synchronizer

With async reset async queues, I feel its safe/cleaner
to remove the one-off "AsyncMailbox verilog black-box
and use the common primitive.

I also added some comments about correct usage of this
block. Probably the 'TRST' signal should be renamed
to make it less confusing, as it requires some processing
of the real JTAG 'TRST' signal.
2016-09-26 11:10:27 -07:00
Howard Mao
cd96a66ba6 replace verilog clock divider with one written in Chisel 2016-09-22 11:32:29 -07:00
mwachs5
9acb352cf6 Correct Merge Conflitct -- clock, not clk (#327)
I think there was a merge conflict somewhere. This should be 'clock', not 'clk'
2016-09-21 20:02:01 -07:00
mwachs5
3a809b209f Allow Makefile override of RESET_DELAY (#322) 2016-09-21 18:28:30 -07:00
Andrew Waterman
8e63f4a1a5 Remove ClockToSignal and vice-versa
Clock.asUInt and Bool.asClock now suffice.
2016-09-21 16:17:14 -07:00
Andrew Waterman
2ab61f1a71 Chisel implicit clock is now named clock, not clk 2016-09-21 16:16:47 -07:00
Richard Xia
63f13ae7ce Merge remote-tracking branch 'origin/master' into rxia-testharness-refactor 2016-09-16 17:10:52 -07:00
mwachs5
a031686763 util: Do BlackBox Async Set/Reset Registers more properly (#305)
* util: Do Set/Reset Async Registers more properly

The way BlackBox "init" registers were coded before was
not really kosher verilog for most synthesis tools.
Also, the enable logic wasn't really pushed down into the flop.

This change is more explicit about set/reset flops,
again this is only a 'temporary' problem that would go away
with parameterizable blackboxes (or general async reset support).

* Tabs, not spaces, in Makefiles

* util: Fix typos in Async BB Reg Comments
2016-09-16 13:50:09 -07:00
Henry Cook
9e2b0aad65 Revert "allow MODEL to be something other than TestHarness"
This reverts commit bf253aaa97.
2016-09-15 11:53:05 -07:00
Howard Mao
bf253aaa97 allow MODEL to be something other than TestHarness 2016-09-14 20:51:56 -07:00
Megan Wachs
1308680f75 Add some async/clock utilities 2016-09-14 16:30:59 -07:00
Wesley W. Terpstra
acedd3688a tilelink2: unit test for the clock crossing 2016-09-13 18:33:56 -07:00
Colin Schmidt
a10d058e1a fix warnings in verilog source (#274) 2016-09-12 18:25:35 -07:00
Megan Wachs
fda4c2bd76 Add a way to create Async Reset Registers and a way to easily access them with TL2 2016-09-08 20:02:07 -07:00
Yunsup Lee
4a7972be31 connect testharness components via member functions (#236)
to prevent code duplication for new testbenches
2016-09-01 18:38:39 -07:00
Scott Johnson
96e2cefb34 Merge branch 'master' into HEAD 2016-08-22 11:37:30 -07:00
Scott Johnson
96a868d388 enable the TestDriver to be used in a SystemVerilog UVM-based testbench, which has its own way to manage end-of-simulation and does not like anyone else to call $finish 2016-08-19 17:14:54 -07:00
Scott Johnson
2d12f6689c make CLOCK_PERIOD actually be the clock period, instead of half of the clock period 2016-08-19 16:55:57 -07:00
Scott Johnson
4dbcc568dc reorder code to get rid of messy -1 2016-08-19 16:55:57 -07:00
Scott Johnson
f945acf712 rm race condition on trace_count 2016-08-19 16:55:57 -07:00
Megan Wachs
66a253a0db Remove unncessary file 2016-08-19 16:08:31 -07:00
Megan Wachs
3dd51ff734 This commit adds Logic & test support for JTAG implementation of Debug Transport Module.
- The DebugTransportModuleJtag is written in Verilog. It probably could be written in
  Chisel except for some negative edge clocking requirement.
- For real implementations, the AsyncDebugBusTo/From is insufficient. This commit
  includes cases where they are used, but because they are not reset asynchronously,
  a Verilog 'AsyncMailbox' is used when p(AsyncDebug) is false.
- This commit differs significantly from the earlier attempt. Now, the
  DTM and synchronizer is instantiated within Top, as it is a real piece of
  hardware (vs. test infrastructure).
-TestHarness takes a parameter vs. creating an entirely new TestHarness class.
It does not make sense to instantiate TestHarness when p(IncludeJtagDTM) is false,
and it would not make sense to insantiate some other TestHarness if p(IncludeJtagDTM)
is true.

To build Verilog which includes the JtagDTM within Top:

make CONFIG=WithJtagDTM_...

To test using gdb->OpenOCD->jtag_vpi->Verilog:

First, install openocd (included in this commit)

./bootstrap
./configure --prefix=$OPENOCD --enable-jtag-vpi
make
make install

Then to run a simulation:

On a 32-bit core:

$(ROCKETCHIP)/riscv-tools/riscv-tests/debug/gdbserver.py \
  --run ./simv-TestHarness-WithJtagDTM_... \
  --cmd="$OPENOCD/bin/openocd --s $OPENOCD/share/openocd/scripts/" \
  --freedom-e300-sim \
  SimpleRegisterTest.test_s0

On a 64-bit core:

$(ROCKETCHIP)/riscv-tools/riscv-tests/debug/gdbserver.py \
  --run ./simv-TestHarness-WithJtagDTM_... \
  --cmd="$OPENOCD/bin/openocd --s $OPENOCD/share/openocd/scripts/" \
  --freedom-u500-sim \
  SimpleRegisterTest.test_s0
2016-08-19 16:08:31 -07:00
Megan Wachs
dd4a50c452 Add JTAG DTM and test support in simulation
Initial cut

checkpoint which compiles and runs but there is some off-by-1 in the protocol

Debugging the clock crossing logic

checkpoint which works

Clean up the AsyncMailbox black box
2016-08-19 16:08:17 -07:00
Andrew Waterman
ed827678ac Write test harness in Chisel
This is an unavoidably invasive commit, because it affects the unit tests
(which formerly exited using stop()), the test harness Verilog generator
(since it is no longer necessary), and the DRAM model (since it is no
longer connected).  However, this should substantially reduce the effort
of building test harnesses in the future, since manual or semi-automatic
Verilog writing should no longer be necessary.  Furthermore, there is now
very little duplication of effort between the Verilator and VCS test
harnesses.

This commit removes support for DRAMsim, which is a bit of an unfortunate
consequence.  The main blocker is the lack of Verilog parameterization for
BlackBox.  It would be straightforward to revive DRAMsim once support for
that feature is added to Chisel and FIRRTL.  But that might not even be
necessary, as we move towards synthesizable DRAM models and FAME-1
transformations.
2016-08-15 23:27:27 -07:00
Andrew Waterman
87a4858aa6 Exit from testbench, not C code
Otherwise, we don't get coverage data from the simulator.
2016-06-23 20:54:07 -07:00
Andrew Waterman
30331fcaeb Remove HTIF; use debug module for testing in simulation 2016-06-23 00:32:05 -07:00
Howard Mao
9b9ddd0d54 get rid of leftover backup memory code 2016-06-22 16:06:41 -07:00
Howard Mao
82169e971e Dynamically compute number of L1 client channels
Until now, the number of L1 client channels was set statically in the
configuration. This static configuration also assumed the same number of
cached and uncached channels per tile. As we plan to move towards
heterogenous multicore systems, this restriction should be removed.

This commit changes the generator so that number of channels per tile
can be independently set (using cde.Parameters.alterPartial).
The OuterMemorySystem will dynamically compute the number of cached and
uncached channels by summing the number of each kind of channel per core.
2016-06-20 13:02:31 -07:00
Howard Mao
a809a1712a make sure clocks and reset signals get intialized properly 2016-06-08 15:38:39 -07:00
Howard Mao
f52fc655a5 remove zscale 2016-05-19 09:43:15 -07:00
Andrew Waterman
1f211b37df WIP on new memory map 2016-04-27 14:57:54 -07:00
Andrew Waterman
46d7dceb1e Disable printf/assert during reset 2016-04-01 18:18:08 -07:00
Palmer Dabbelt
a0f3189c74 Change MIF_DATA_BITS back to 64
It turns out the Chisel C++ backend can't emit correct initialization
code for a 128 bit wide NastiROM.  Rather than trying to fix Chisel, I'm
just going to hack up the backup memory port Verilog harness a bit more
to make it work.

Note that the backup memory port Verilog already couldn't take arbitrary
parameters for MIF_*, so it's not like we're losing any flexibility
here.
2016-02-27 11:43:44 -08:00
Palmer Dabbelt
7c0c48fac4 Resurrect the backup memory port
We need this to work for our chip, and it's not been tested in a long
time in upstream -- it didn't even used to build since the Nasti
conversion.  This makes a few changes:

 * Rather than calling the backup memory port parameters MEM_*, it calls
   them MIF_* (to match the MIT* paramater objects).  A new name was
   necessary because the Nasti stuff is now dumped as MEM_*, which has
   similar names but incompatible values.

 * p(MIFDataBits) was changed back to 128, as otherwise the backup
   memory port doesn't work (it only send half a TileLink transaction).
   64 also causes readmemh to bail out, but changing the elf2hex parameters
   works around that.

 * A configuration was added that enabled the backup memory port in the
   tester.  While this is kind of an awkward way to do it, I want to
   make sure I can start testing this regularly and this makes it easy to
   integrate.
2016-02-27 10:46:56 -08:00
Andrew Waterman
5195a5b891 Remove IPI network
This is now provided via MMIO.
2015-11-16 21:53:14 -08:00
Howard Mao
bbf14ddc01 use definitions in consts header whenever possible 2015-11-05 10:48:32 -08:00
Yunsup Lee
0d245741bc add multichannel NASTI support in Verilog testbench 2015-11-05 10:48:32 -08:00
Howard Mao
9dabcab9c2 Get rid of MemIO in Top and replace with AXI throughout 2015-11-05 10:48:32 -08:00
Yunsup Lee
a175afae73 make ZscaleChip work with new parameters framework 2015-10-25 10:24:39 -07:00
Howard Mao
4346111d2a fix remaining vsim harness typo 2015-10-19 20:20:14 -07:00
Yunsup Lee
e7802825c3 add Zscale testing 2015-07-17 12:02:02 -07:00
Henry Cook
d3ccec1044 Massive update containing several months of changes from the now-defunct private chip repo.
* Adds support for a L2 cache with directory bits for tracking L1 coherence (DefaultL2Config), and new metadata-based coherence API.
* Additional tests.
* New virtual memory implementation, priviliged architecture (1.7), custom CSRs, FDivSqrt unit
* Updated TileLink protocol, NASTI protocol SHIMs.
* Lays groundwork for multiple top-level memory channels, superscalar fetch.
* Bump all submodules.
2015-07-02 14:43:30 -07:00