gma: Validate maximum scalable width
Change-Id: Iba8199a2451e1976ac8aa0f8632d0846fc0caeb4
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/17261
Tested-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/common/hw-gfx-gma-config.ads.template b/common/hw-gfx-gma-config.ads.template
index 1ba66a2..7a83e77 100644
--- a/common/hw-gfx-gma-config.ads.template
+++ b/common/hw-gfx-gma-config.ads.template
@@ -228,4 +228,22 @@
24_000_000),
when Skylake => 24_000_000);
+ ----------------------------------------------------------------------------
+
+ -- Maximum source width with enabled scaler. This only accounts
+ -- for simple 1:1 pipe:scaler mappings.
+
+ type Width_Per_Pipe is array (Config_Index) of Width_Type;
+
+ Maximum_Scalable_Width : constant Width_Per_Pipe :=
+ (case CPU is
+ when Ironlake..Haswell =>
+ (Primary => 4096,
+ Secondary => 2048,
+ Tertiary => 2048),
+ when Broadwell..Skylake =>
+ (Primary => 4096,
+ Secondary => 4096,
+ Tertiary => 4096));
+
end HW.GFX.GMA.Config;