tree f9cc5d8554b56ed34e9a5d65875c479b369c5e9b
parent b238135bfc2c101797b30229c746870b46da8dee
author Eunchan Kim <eunchan@opentitan.org> 1596152260 -0700
committer Eunchan Kim <eunchan@opentitan.org> 1596472760 -0700
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[tlgen] Skeleton of Xbar being comportable IP

This commit is the first step to make Xbar being comportable IP.
`xbar.hjson.tpl` contains basic information of the xbar module's
input/output signals being represented as inter-module signal.

To not disrupt the generated process later, the tlgen `generate()`
function now returns a list of tuples. The tuple is a pair of path info
and its contents. Later, after generalizing all the generated IP's
generate function, we can make common IP management util that controls
all the IP generation.

Signed-off-by: Eunchan Kim <eunchan@opentitan.org>