video: Add commands to list and change fonts

Add a new 'font' command which allows the fonts to be listed as well as
selecting a different font and size.

Allow the test to run on sandbox, where multiple font/size combinations
are supported, as well as sandbox_flattree, where they are not.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 52 insertions, 0 deletions

diff --git a/doc/usage/cmd/font.rst b/doc/usage/cmd/font.rst
new file mode 100644
index 00000000000..6fb08232703
--- /dev/null
+++ b/doc/usage/cmd/font.rst
@@ -0,0 +1,52 @@
+.. SPDX-License-Identifier: GPL-2.0+:
+
+font command
+============
+
+Synopis
+-------
+
+::
+
+    font list
+    font select <name> [<size>]
+    font size <size>
+
+
+Description
+-----------
+
+The *font* command allows selection of the font to use on the video console.
+This is available when the Truetype console is in use. This is the case when
+`CONFIG_CONSOLE_TRUETYPE` is enabled.
+
+
+font list
+~~~~~~~~~
+
+This lists the available fonts, using the name of the font file in the build.
+
+
+font select
+~~~~~~~~~~~
+
+This selects a new font and optionally changes the size.
+
+
+font size
+~~~~~~~~~
+
+This changes the font size only.
+
+
+Examples
+--------
+
+::
+
+    => font list
+    nimbus_sans_l_regular
+    cantoraone_regular
+    => font size 40
+    => font select cantoraone_regular 20
+    =>