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authorNico Huber <nico.h@gmx.de>2019-01-01 22:28:47 +0100
committerPatrick Georgi <pgeorgi@google.com>2019-02-06 16:20:44 +0000
commit2bc892cf56acbce5d76f3a0c50908b44f8dc49a6 (patch)
tree07f0cec568d3505a70c2132d8ee1f68b5a5a71a4
parentb56797707541a596427d59558f5a147415ea844f (diff)
downloadcoreboot-2bc892cf56acbce5d76f3a0c50908b44f8dc49a6.tar.xz
libgfxinit: Add options to limit framebuffer size
Add maximum width and height options and set the default to 2560x1600 (WQXGA). The framebuffer will be scaled up to the displays' native resolutions. So this should help with tiny fonts on high-DPI displays. For laptops, reasonable defaults can be set at the mainboard level. Change-Id: I47fba063629260c3a2854caf7a73f1a1e933d063 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/30585 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
-rw-r--r--src/device/Kconfig16
-rw-r--r--src/drivers/intel/gma/hires_fb/gma.adb8
2 files changed, 22 insertions, 2 deletions
diff --git a/src/device/Kconfig b/src/device/Kconfig
index 85f1d65719..b90b15f6b3 100644
--- a/src/device/Kconfig
+++ b/src/device/Kconfig
@@ -445,6 +445,22 @@ config LINEAR_FRAMEBUFFER
def_bool y
depends on VBE_LINEAR_FRAMEBUFFER || GENERIC_LINEAR_FRAMEBUFFER
+config LINEAR_FRAMEBUFFER_MAX_WIDTH
+ int "Maximum width in pixels"
+ depends on LINEAR_FRAMEBUFFER && MAINBOARD_USE_LIBGFXINIT
+ default 2560
+ help
+ Set the maximum width of the framebuffer. This may help with
+ default fonts too tiny for high-resolution displays.
+
+config LINEAR_FRAMEBUFFER_MAX_HEIGHT
+ int "Maximum height in pixels"
+ depends on LINEAR_FRAMEBUFFER && MAINBOARD_USE_LIBGFXINIT
+ default 1600
+ help
+ Set the maximum height of the framebuffer. This may help with
+ default fonts too tiny for high-resolution displays.
+
endmenu # "Display"
config SMBUS_HAS_AUX_CHANNELS
diff --git a/src/drivers/intel/gma/hires_fb/gma.adb b/src/drivers/intel/gma/hires_fb/gma.adb
index bd141329bd..e3553ca3c0 100644
--- a/src/drivers/intel/gma/hires_fb/gma.adb
+++ b/src/drivers/intel/gma/hires_fb/gma.adb
@@ -1,3 +1,7 @@
+with CB.Config;
+
+use CB;
+
with HW.GFX;
with HW.GFX.Framebuffer_Filler;
with HW.GFX.GMA;
@@ -60,8 +64,8 @@ is
success : boolean;
- min_h : pos32 := pos32'last;
- min_v : pos32 := pos32'last;
+ min_h : pos32 := Config.LINEAR_FRAMEBUFFER_MAX_WIDTH;
+ min_v : pos32 := Config.LINEAR_FRAMEBUFFER_MAX_HEIGHT;
begin
lightup_ok := 0;