Update README.md

README.md

@@ -12,6 +12,152 @@ Second, the backlight control doesn't work when cold boot directly into Mac OS,
 
 No clue how to fix this. Please help if you have any ideas!
 
+May be we can look into this function in AMDRadeonX6000Framebuffer.kext for more information
+
+```
+__int64 __fastcall AmdDalServices::initialize(AmdDalServices *this, unsigned __int8 a2, __int64 a3)
+{
+  unsigned int (__fastcall *v3)(_QWORD, const char *, int *, signed __int64); // rax
+  AmdDalServices *v4; // r12
+  __int64 v5; // rax
+  __int64 v6; // rax
+  __int64 v7; // rdx
+  __int64 v8; // rdi
+  AmdDalDmcubService *v9; // rax
+  __int64 v10; // rdi
+  __int64 v11; // rax
+  __int64 v12; // rbx
+  __int64 v13; // rsi
+  unsigned int v14; // ebx
+  unsigned int v15; // eax
+  unsigned int v16; // ebx
+  AmdDalPsrService *v17; // rax
+  const char *v18; // rsi
+  const char *v19; // rdi
+  AmdDalServices *v21; // [rsp+0h] [rbp-40h]
+  __int64 v22; // [rsp+8h] [rbp-38h]
+  __int64 v23; // [rsp+10h] [rbp-30h]
+  int v24; // [rsp+1Ch] [rbp-24h]
+
+  v24 = 0;
+  v3 = (unsigned int (__fastcall *)(_QWORD, const char *, int *, signed __int64))*((_QWORD *)this + 83);
+  if ( !v3 )
+  {
+    kprintf("ASSERT FAILED : %s.\n", "nullptr != m_cgsDevice.services.getProperty", a3);
+    kprintf(
+      "ASSERT LOCATION : %s :: %s:%u .\n",
+      "virtual IOReturn AmdDalServices::initialize(DalConfigOptions)",
+      "/Volumes/Code/p4/GoldenG/OpenGL/GLBuild/AmdRadeonLibraries/src/Latest/DalLibrary/falcon_dm/Source/AmdDalServices.cpp");
+    return (unsigned int)-536870212;
+  }
+  v4 = this;
+  if ( v3(*((_QWORD *)this + 78), "DalClamshellClosedState", &v24, 4LL) )
+    *((_BYTE *)this + 534) |= v24 == 1;
+  v5 = dc_create((__int64)this + 408);
+  *((_QWORD *)this + 72) = v5;
+  if ( !v5 )
+  {
+    v18 = "xxx:xxx:xxx";
+    if ( *((_QWORD *)this + 73) )
+      v18 = (char *)this + 608;
+    v19 = "[%s][DAL] %s() !!! FAILED - dc_create() returned NULL.\n";
+LABEL_27:
+    kprintf(v19, v18, "initialize");
+    return (unsigned int)-536870212;
+  }
+  v6 = AmdDalServices::initDcCallbacks(this);
+  AmdDalServices::initDcDebugProperties(this, v6, v7);
+  v8 = *((_QWORD *)this + 72);
+  if ( *(_BYTE *)(v8 + 85) )
+  {
+    v21 = (AmdDalServices *)((char *)v4 + 584);
+    v22 = v8;
+    v23 = (a2 >> 2) & 1;
+    v9 = (AmdDalDmcubService *)AmdDalDmcubService::createDmcubService(&v21);
+    *((_QWORD *)v4 + 12) = v9;
+    if ( v9 )
+    {
+      AmdDalDmcubService::initializeDmcubServices(v9);
+      AmdDalDmcubService::initializeHardware(*((AmdDalDmcubService **)v4 + 12));
+      if ( !(unsigned __int8)AmdDalDmcubService::isHardwareSupported(*((AmdDalDmcubService **)v4 + 12)) )
+      {
+        v10 = *((_QWORD *)v4 + 12);
+        if ( v10 )
+        {
+          (*(void (**)(void))(*(_QWORD *)v10 + 8LL))();
+          *((_QWORD *)v4 + 12) = 0LL;
+        }
+      }
+      v8 = *((_QWORD *)v4 + 72);
+      goto LABEL_11;
+    }
+    v18 = "xxx:xxx:xxx";
+    if ( *((_QWORD *)v4 + 73) )
+      v18 = (char *)v4 + 608;
+    v19 = "[%s][DAL] %s() !!! FAILED - createDmcubService returned NULL.\n";
+    goto LABEL_27;
+  }
+LABEL_11:
+  dc_hardware_init(v8);
+  *((_BYTE *)v4 + 849) = 1;
+  LODWORD(v21) = 0;
+  v11 = mod_color_create(*((_QWORD *)v4 + 72), &v21);
+  *((_QWORD *)v4 + 107) = v11;
+  v21 = 0LL;
+  LOBYTE(v21) = 0;
+  v22 = *((_QWORD *)v4 + 72);
+  v23 = v11;
+  if ( *(_DWORD *)(v22 + 28) )
+  {
+    LOBYTE(v12) = 0;
+    do
+    {
+      LOBYTE(v21) = v12;
+      v12 = (unsigned __int8)v12;
+      *((_QWORD *)v4 + v12 + 14) = AmdDalDisplay::createDisplay(&v21);
+      LOBYTE(v12) = v12 + 1;
+    }
+    while ( *(_DWORD *)(*((_QWORD *)v4 + 72) + 28LL) > (unsigned int)(unsigned __int8)v12 );
+  }
+  AmdDalDmLogger::SetLogMask(1LL, 0xFFFFFFFFLL);
+  AmdDalDmLogger::SetLogMask(2LL, 0xFFFFFFFFLL);
+  v13 = *((_QWORD *)v4 + 72);
+  if ( *(_DWORD *)(v13 + 28) )
+  {
+    v14 = 0;
+    do
+    {
+      v15 = dc_get_link_id_at_index(v13, v14);
+      *((_QWORD *)v4 + (unsigned __int8)v14 + 6) = AmdDalMstService::createMstManager(
+                                                     (char *)v4 + 584,
+                                                     *((_QWORD *)v4 + 72),
+                                                     *(_QWORD *)(*((_QWORD *)v4 + 72) + 8LL * (unsigned __int8)v14 + 848),
+                                                     4LL,
+                                                     (v15 >> 8) & 0xF);
+      v14 = (unsigned __int8)(v14 + 1);
+      v13 = *((_QWORD *)v4 + 72);
+    }
+    while ( *(_DWORD *)(v13 + 28) > v14 );
+  }
+  AmdDalI2cService::initialize(*((_QWORD *)v4 + 4));
+  AmdDalAuxI2cService::initialize(*((_QWORD *)v4 + 5), *((_QWORD *)v4 + 72), v4);
+  v16 = 0;
+  if ( *((_BYTE *)v4 + 400) & 4 )
+  {
+    v21 = (AmdDalServices *)((char *)v4 + 584);
+    v22 = *((_QWORD *)v4 + 72);
+    v17 = (AmdDalPsrService *)AmdDalPsrService::createPsrService(&v21);
+    *((_QWORD *)v4 + 13) = v17;
+    if ( v17 )
+    {
+      AmdDalPsrService::initializePsrServices(v17);
+      AmdDalPsrService::initializeHardware(*((AmdDalPsrService **)v4 + 13));
+    }
+  }
+  return v16;
+}
+```
+
 # Related issue
 
 * https://bugzilla.kernel.org/show_bug.cgi?id=203905