boot_loader_openfirmware: Fetch EDID

Read the EDID from OF and pass it on to the kernel.

Last part of ticket #6105.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38307 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/boot/platform/openfirmware/Jamfile

@@ -2,6 +2,10 @@ SubDir HAIKU_TOP src system boot platform openfirmware ;
 
 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
@@ -27,6 +31,11 @@ KernelMergeObject boot_platform_openfirmware.o :
 	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

@@ -8,9 +8,13 @@
 #include <boot/platform.h>
 #include <boot/stage2.h>
 #include <boot/platform/generic/video.h>
+#include <edid.h>
 #include <platform/openfirmware/openfirmware.h>
 
 
+//#define TRACE_VIDEO
+
+
 static int sScreen;
 
 
@@ -111,6 +115,21 @@ platform_init_video(void)
 {
 	gKernelArgs.frame_buffer.enabled = false;
 
+	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;
 }