You may be looking for one of the following pre-built PDFs:

• Latest draft or stable
• Latest release

sudo apt-get install git make python3 python3-sympy graphviz texlive-full
make

There are two other interesting make targets:

1. make debug_defines.h creates a C header file containing constants for addresses and fields of all the registers and abstract commands.
2. make chisel creates scala files for DM registers and abstract commands with the same information.

There are various ways to contribute to this spec. You can use a combination of them to get your idea across. Please note that pull requests will only be reviewed/accepted from RISC-V Foundation members.

1. Make a PR. This is the best way to deal with minor typos and edits.
2. File an issue with something that you want to know or see.
3. Discuss higher-level questions or ideas on the riscv-debug-group mailing list: https://groups.google.com/a/groups.riscv.org/forum/#!forum/debug

Additional information can be found at https://github.com/riscv/debug-taskgroup