README: Add uart to fusesoc instructions

The SoC defaults to using the uart16550 so provide instructions on how
to fetch that library when seetting up fusesoc.

Also remove the text about a working directory; fusesoc doesn't need
one.

Signed-off-by: Joel Stanley <joel@jms.id.au>

diff --git a/README.md b/README.md
index d5ed253fe024886f1c8843bd65e6aefcea9f3187..63a93fe48812383b011f5b26cc1def7efe54a897 100644 (file)
--- a/README.md
+++ b/README.md
@@ -103,14 +103,8 @@ sudo dnf install fusesoc
 
 ```
 fusesoc init
-```
-
-- Create a working directory and point FuseSoC at microwatt:
-
-```
-mkdir microwatt-fusesoc
-cd microwatt-fusesoc
-fusesoc library add microwatt /path/to/microwatt/
+fusesoc fetch uart16550
+fusesoc library add microwatt /path/to/microwatt
 ```
 
 - Build using FuseSoC. For hello world (Replace nexys_video with your FPGA board such as --target=arty_a7-100):