Ticket #6105: 0007-Retrieve-EDID-info.2.patch

src/system/boot/platform/openfirmware/Jamfile

@@ -2 +2 @@
 
 SubDirC++Flags -D_BOOT_MODE -fno-rtti ;
 
+UsePrivateHeaders [ FDirName graphics common ] ;
+
+SEARCH_SOURCE += [ FDirName $(HAIKU_TOP) src add-ons accelerants common ] ;
+
 local genericPlatformSources =
     text_menu.cpp
     video_blit.cpp
@@ -27 +31 @@
     openfirmware_devices.cpp
 
     $(genericPlatformSources)
+
+    # VESA/DDC EDID
+    decode_edid.c
+    dump_edid.c
+
     :
     : boot_platform_openfirmware_$(TARGET_ARCH).a
 ;

src/system/boot/platform/openfirmware/video.cpp

@@ -5 +5 @@
  */
 
 
+#include <edid.h>
+
 #include <boot/stage2.h>
 #include <boot/platform.h>
 #include <boot/platform/generic/video.h>
 #include <platform/openfirmware/openfirmware.h>
 
 
+//#define TRACE_VIDEO
+
+
 static int sScreen;
 
 
@@ -108 +113 @@
 {
     gKernelArgs.frame_buffer.enabled = 0;
 
+    int screen = of_finddevice("screen");
+    if (screen == OF_FAILED)
+        return B_NO_INIT;
+    edid1_raw edidRaw;
+    if (of_getprop(screen, "EDID", &edidRaw, sizeof(edidRaw)) != OF_FAILED) {
+        edid1_info info;
+        edid_decode(&info, &edidRaw);
+#ifdef TRACE_VIDEO
+        edid_dump(&info);
+#endif
+        gKernelArgs.edid_info = kernel_args_malloc(sizeof(edid1_info));
+        if (gKernelArgs.edid_info != NULL)
+            memcpy(gKernelArgs.edid_info, &info, sizeof(edid1_info));
+    }
+
     return B_OK;
 }