video: Add a console driver that uses TrueType fonts
The existing 8x16 font is adequate for most purposes. It is small and fast.
However for boot screens where information must be presented to the user,
the console font is not ideal. Common requirements are larger and
better-looking fonts.
This console driver can use TrueType fonts built into U-Boot, and render
them at any size. This can be used in scripts to place text as needed on
the display.
This driver is not really designed to operate with the command line. Much
of U-Boot expects a fixed-width font. But to keep things working correctly,
rudimentary support for the console is provided. The main missing feature is
support for command-line editing.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index d91b06b..fbc5d7c 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -67,6 +67,30 @@
struct video_priv: 0=unrotated, 1=90 degrees clockwise, 2=180
degrees, 3=270 degrees.
+config CONSOLE_TRUETYPE
+ bool "Support a console that uses TrueType fonts"
+ depends on DM_VIDEO
+ help
+ TrueTrype fonts can provide outline-drawing capability rather than
+ needing to provide a bitmap for each font and size that is needed.
+ With this option you can adjust the text size and use a variety of
+ fonts. Note that this is noticeably slower than with normal console.
+
+config CONSOLE_TRUETYPE_SIZE
+ int "TrueType font size"
+ depends on CONSOLE_TRUETYPE
+ default 18
+ help
+ This sets the font size for the console. The size is measured in
+ pixels and is the nominal height of a character. Note that fonts
+ are commonly measured in 'points', being 1/72 inch (about 3.52mm).
+ However that measurement depends on the size of your display and
+ there is no standard display density. At present there is not a
+ method to select the display's physical size, which would allow
+ U-Boot to calculate the correct font size.
+
+source "drivers/video/fonts/Kconfig"
+
config VIDEO_VESA
bool "Enable VESA video driver support"
default n