Optimised Rocket Lake startup as IGPU is unsupported

Changelog.md

@@ -3,6 +3,8 @@ WhateverGreen Changelog
 #### v1.4.9
 - Added per-GPU disabling API: inject `disable-gpu` to disable
 - Added per-GPU disabling kernel version specification: inject `disable-gpu-min` / `disable-gpu-max` to select kernel version to disable (inclusive range)
+- Added IGPU disabling API: inject `disable-gpu` to disable or use `-wegnoigpu` boot argument
+- Optimised Rocket Lake startup as IGPU is unsupported
 
 #### v1.4.8
 - Fixed debug messages from cursor manipulation with NVIDIA GPUs on macOS 11

README.md

@@ -43,7 +43,8 @@ Read [FAQs](https:/acidanthera/WhateverGreen/blob/master/Manual/) an
 - `-wegdbg` to enable debug printing (available in DEBUG binaries).
 - `-wegoff` to disable WhateverGreen.
 - `-wegbeta` to enable WhateverGreen on unsupported OS versions (11 and below are enabled by default).
-- `-wegnoegpu` to disable external GPU (or add `disable-external-gpu` property to IGPU).
+- `-wegnoegpu` to disable all external GPUs (or add `disable-gpu` property to each GFX0).
+- `-wegnoigpu` to disable internal GPU (or add `disable-gpu` property to IGPU)
 - `-radvesa` to disable ATI/AMD video acceleration completely.
 - `-rad24` to enforce 24-bit display mode.
 - `-raddvi` to enable DVI transmitter correction (required for 290X, 370, etc.).

WhateverGreen/kern_igfx.cpp

@@ -157,6 +157,9 @@ void IGFX::init() {
  modRPSControlPatch.available = true;
  modTypeCCheckDisabler.enabled = true;
  break;
+ case CPUInfo::CpuGeneration::RocketLake:
+ gPlatformGraphicsSupported = false;
+ break;
  default:
  SYSLOG("igfx", "found an unsupported processor 0x%X:0x%X, please report this!", family, model);
  break;
@@ -187,7 +190,9 @@ void IGFX::processKernel(KernelPatcher &patcher, DeviceInfo *info) {
 
  auto cpuGeneration = BaseDeviceInfo::get().cpuGeneration;
 
- if (info->videoBuiltin) {
+ if (info->videoBuiltin && !gPlatformGraphicsSupported) {
+ switchOffGraphics = switchOffFramebuffer = true;
+ } else if (info->videoBuiltin) {
  applyFramebufferPatch = loadPatchesFromDevice(info->videoBuiltin, info->reportedFramebufferId);
 
 #ifdef DEBUG

WhateverGreen/kern_igfx.hpp

@@ -200,6 +200,11 @@ class IGFX {
  */
  bool gPlatformListIsSNB {false};
 
+ /**
+ * IGPU support
+ */
+ bool gPlatformGraphicsSupported {true};
+
  /**
  * Private self instance for callbacks
  */