Trouble running verilator executable on self-generated code

[Benjamin Ou]

Following the instructions under Section 2.1.4, I'm able to successfully generate the default simulator-chipyard-RocketConfig executable, and the followup "make run-asm-tests" and "make run-bmark-tests" commends work fine.

I've also made a simple Hello World with the riscv64-unknown-elf-gcc compiler, and verified it works with spike - running "spike pk riscv-hello" produces:

>bbl loader
>Hello world!

However, if I try to run " ./simulator-chipyard-RocketConfig riscv_hello", I get this:

>This emulator compiled with JTAG Remote Bitbang client. To enable, use +jtag_rbb_enable=1.
>Listening on port 43133
>[UART] UART0 is here (stdin/stdout).
>warning: tohost and fromhost symbols not in ELF; can't communicate with target

On which it hangs forever. And if I try " ./simulator-chipyard-RocketConfig pk riscv_hello", I get:

>This emulator compiled with JTAG Remote Bitbang client. To enable, use +jtag_rbb_enable=1.
>Listening on port 35301
>[UART] UART0 is here (stdin/stdout).

Which is similar to what happens if I run the example binary at $RISCV/riscv64-unknown-elf/share/riscv-tests/isa/rv64ui-p-simple through the simulator executable, but instead of completing and exiting silently, the process hangs forever at the "[UART]" line.

[Alon Amid]

How are you compiling you hello world program? Seems like you are trying to run a baremetal program.

Have you followed this page of the documentation? https://chipyard.readthedocs.io/en/latest/Software/Baremetal.html

 

Alon

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[Benjamin Ou]

That worked perfectly. Thanks!