Site-wide canonicals and rel=alternate tags possible?

We have just launched a separate mobile vs desktop site (not my choice, but I get to fix the snafu that it caused, of course).

I’m curious if Yoast can handle sitewide rel=canonical tags for the mobile site that link back to the main site and if it’s also possible to do site-wide rel=alternate tags to point to the mobile site.

I realize you can do this on a page by page basis for canonicals, but I really don’t want to go through 500+ pages to set this up and I don’t see any options for rel=alternate.

Does Yoast/Yoast Premium have a solution for this or is there an alternative aside from hard coding this into the site?

I appreciate your help.