Error after bumping rocket-chip to a little bit newer

[yintianyu]

In order to fit sifve-inclusivecache, I bumped rocket-chip newer to bcb3d0a

However, when I build, it prompted that:

[error] /home/yinty/code/freedom/freedom/src/main/scala/unleashed/DevKitFPGADesign.scala:68:10: not found: type HasPeripheryMaskROMSlave
[error]     with HasPeripheryMaskROMSlave
[error]          ^
[error] one error found
[error] (Compile / compileIncremental) Compilation failed
[error] Total time: 8 s, completed Oct 31, 2019, 10:38:55 PM
common.mk:48: recipe for target '/home/yinty/code/freedom/freedom/builds/vc707-u500devkit/sifive.freedom.unleashed.DevKitU500FPGADesign_WithDevKit50MHz.fir' failed
make: *** [/home/yinty/code/freedom/freedom/builds/vc707-u500devkit/sifive.freedom.unleashed.DevKitU500FPGADesign_WithDevKit50MHz.fir] Error 1

I find out that MaskROM has helper object attach instead of trait since #1698

Then I deleted that line, and another error surfaces:

[error] (run-main-0) java.lang.IllegalArgumentException: requirement failed: in_xbar.node (A nexus node with parent 'in_xbar/pbus/topMod/topDesign/top' at  (PeripheryBus.scala:36:29)) has 1 required outputs and no possible inputs
[error] java.lang.IllegalArgumentException: requirement failed: in_xbar.node (A nexus node with parent 'in_xbar/pbus/topMod/topDesign/top' at  (PeripheryBus.scala:36:29)) has 1 required outputs and no possible inputs
[error]     at scala.Predef$.require(Predef.scala:277)
[error]     at freechips.rocketchip.diplomacy.MixedNexusNode.resolveStar(Nodes.scala:513)
[error]     at freechips.rocketchip.diplomacy.MixedNode.liftedTree1$1(Nodes.scala:275)
[error]     at freechips.rocketchip.diplomacy.MixedNode.x$29$lzycompute(Nodes.scala:260)
[error]     at freechips.rocketchip.diplomacy.MixedNode.x$29(Nodes.scala:259)
...

How can I fix this?

[erikdanie]

See my branch here where I am attempting to do the same thing. Specifically the diff in /src/main/scala/everywhere/e300artydevkit/System.scala

https://github.com/sifive/freedom/tree/bump-stuff

[yintianyu]

@erikdanie I have just switch to your branch besides every submodule. After modifying several import lines(as well as other lines maybe), I could finally generate verilog.

However, when generating mcs, it failed as followed:

ERROR: [Synth 8-439] module 'AnalogToUInt' not found [/home/yinty/code/freedom/freedom-bump/builds/vc707-u500devkit/sifive.freedom.unleashed.DevKitU500FPGADesign_WithDevKit50MHz.v:283823]
    Parameter WIDTH bound to: 32'sb00000000000000000000000000000001 
ERROR: [Synth 8-285] failed synthesizing module 'VC707BaseShell' [/home/yinty/code/freedom/freedom-bump/builds/vc707-u500devkit/sifive.freedom.unleashed.DevKitU500FPGADesign_WithDevKit50MHz.v:283675

I find AnalogToUInt ( along with UIntToAnalog ) in fpga-shells/src/main/scala/shell/Util.scala where it is a BlackBox module.

So where can I find these modules, are they Xilinx IPs? How can I use them when synthesizing?

[erikdanie]

You need to edit the makefile to have VSRCS variable point to that path

[yintianyu]

Actually I don't know which path or file to be added to VSRCS since I cannot find a verilog module named AnalogToUInt in any vsrc folder. I even suspect that it isn't a verilog module.

[erikdanie]

Ah I see, these were never open-sourced, though they are really simple, and there's no reason they shouldn't be. The reason I hadn't done it yet is that IOBUF is preferred to AnalogToUInt and UIntToAnalog, but I hadnt gotten around to replacing them yet. (https://github.com/sifive/fpga-shells/blob/master/src/main/scala/ip/xilinx/Unisim.scala#L235)

Here is the code if you care to use it though:

module AnalogToUInt (a, b);

parameter WIDTH = 1;

inout [WIDTH-1:0] a; output [WIDTH-1:0] b;

assign b = a;

endmodule

module UIntToAnalog (a, b, b_en);

parameter WIDTH = 1;

inout [WIDTH-1:0] a; input [WIDTH-1:0] b; input b_en;

wire [31:0] z32;

assign z32 = 32'hZZZZZZZZ;

assign a = b_en ? b : z32[WIDTH-1:0];

endmodule

[yintianyu]

That works! Thank you very much.

This issue should be closed now.

BTW, can you help me with #144 ?