gma: Add Kaby Lake support
Including some weird Amber Lake Y parts that are treated like Kaby Lake
in Linux' i915.
Only differences to Skylake in the DDI output buffer tuning.
Change-Id: Ice05e07b016cebc7258a9790e38e079e63227a4b
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/libgfxinit/+/28763
Reviewed-by: Thomas Heijligen <src@posteo.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/common/hw-gfx-gma-config.ads.template b/common/hw-gfx-gma-config.ads.template
index 03b4e47..fc14a46 100644
--- a/common/hw-gfx-gma-config.ads.template
+++ b/common/hw-gfx-gma-config.ads.template
@@ -31,7 +31,7 @@
when Ironlake => Ivybridge,
when Haswell => Broadwell,
when Broxton => Broxton,
- when Skylake => Skylake);
+ when Skylake => Kabylake);
CPU_Var_Last : constant CPU_Variant :=
(case Gen is
when Haswell | Skylake => ULX,
@@ -114,6 +114,8 @@
CPU_Ivybridge : <ilkbool> := Gen_Ironlake and then CPU = Ivybridge;
CPU_Haswell : <hswbool> := Gen_Haswell and then CPU = Haswell;
CPU_Broadwell : <hswbool> := Gen_Haswell and then CPU = Broadwell;
+ CPU_Skylake : <sklbool> := Gen_Skylake and then CPU = Skylake;
+ CPU_Kabylake : <sklbool> := Gen_Skylake and then CPU = Kabylake;
Sandybridge_On : <ilkbool> :=
((Gen_Ironlake and then CPU >= Sandybridge) or Haswell_On);
@@ -205,6 +207,7 @@
Has_DDI_Buffer_Trans : <genbool> := Haswell_On and not Has_DDI_PHYs;
Has_Low_Voltage_Swing : <genbool> := Broxton_On;
Has_Iboost_Config : <genbool> := Skylake_On;
+ Use_KBL_DDI_Buf_Trans : <sklbool> := CPU_Kabylake;
Need_DP_Aux_Mutex : <genbool> := False; -- Skylake & (PSR | GTC)
@@ -257,7 +260,8 @@
----------------------------------------------------------------------------
- DDI_Buffer_Iboost : <hswsklvar> Natural := (if Is_ULX then 3 else 1);
+ DDI_Buffer_Iboost : <hswsklvar> Natural :=
+ (if Is_ULX or (CPU_Kabylake and Is_ULT) then 3 else 1);
Default_DDI_HDMI_Buffer_Translation : <hswvar> DDI_HDMI_Buf_Trans_Range :=
(if CPU_Haswell then 6
@@ -378,6 +382,20 @@
(Device_Id and 16#ffcf#) = 16#190b# or
(Device_Id and 16#ffcf#) = 16#190d#);
+ function Is_Kaby_Lake_Y (Device_Id : Word16) return Boolean is
+ ((Device_Id and 16#ffcf#) = 16#5905# or
+ (Device_Id and 16#ffcf#) = 16#590e#);
+ function Is_Kaby_Lake_Y_AML (Device_Id : Word16) return Boolean is
+ (Device_Id = 16#591c# or Device_Id = 16#87c0#);
+ function Is_Kaby_Lake_U (Device_Id : Word16) return Boolean is
+ ((Device_Id and 16#ffcd#) = 16#5901# or
+ (Device_Id and 16#ffce#) = 16#5906#);
+ function Is_Kaby_Lake (Device_Id : Word16) return Boolean is
+ ((Device_Id and 16#ffc7#) = 16#5902# or
+ (Device_Id and 16#ffcf#) = 16#5908# or
+ (Device_Id and 16#ffcf#) = 16#590b# or
+ (Device_Id and 16#ffcf#) = 16#590d#);
+
function Is_GPU (Device_Id : Word16; CPU : CPU_Type; CPU_Var : CPU_Variant)
return Boolean is
(case CPU is
@@ -398,7 +416,12 @@
when Skylake => (case CPU_Var is
when Normal => Is_Skylake (Device_Id),
when ULT => Is_Skylake_U (Device_Id),
- when ULX => Is_Skylake_Y (Device_Id)));
+ when ULX => Is_Skylake_Y (Device_Id)),
+ when Kabylake => (case CPU_Var is
+ when Normal => Is_Kaby_Lake (Device_Id),
+ when ULT => Is_Kaby_Lake_U (Device_Id),
+ when ULX => Is_Kaby_Lake_Y (Device_Id) or
+ Is_Kaby_Lake_Y_AML (Device_Id)));
function Compatible_GPU (Device_Id : Word16) return Boolean is
(Is_GPU (Device_Id, CPU, CPU_Var));