*** empty log message ***

13 files changed, 1314 insertions, 0 deletions

diff --git a/.cvsignore b/.cvsignore
new file mode 100644
index 0000000..0efe259
--- /dev/null
+++ b/.cvsignore
@@ -0,0 +1 @@
+monitor-get-edid
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..0b643ac
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,483 @@
+
+		  GNU LIBRARY GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1991 Free Software Foundation, Inc.
+                    675 Mass Ave, Cambridge, MA 02139, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the library GPL.  It is
+ numbered 2 because it goes with version 2 of the ordinary GPL.]
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
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+
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+That's all there is to it!
+
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..8e97468
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,84 @@
+PACKAGE = monitor-edid
+VERSION = 1.0
+FILES = $(shell ls | grep -v CVS | grep -vF .tar)
+
+ARCH	:= $(patsubst i%86,i386,$(shell uname -m))
+ARCH	:= $(patsubst sparc%,sparc,$(ARCH))
+ARCH	:= $(patsubst amd64,x86_64,$(ARCH))
+
+ifeq (i386,$(ARCH))
+HAS_VBE	= y
+endif
+ifeq (x86_64,$(ARCH))
+HAS_VBE = y
+endif
+ifeq (ia64,$(ARCH))
+HAS_VBE = y
+endif
+ifeq (ppc,$(ARCH))
+HAS_OPEN_FIRMWARE = y
+endif
+ifeq (ppc64,$(ARCH))
+HAS_OPEN_FIRMWARE = y
+endif
+
+HAS_VBE = y
+HAS_OPEN_FIRMWARE = y
+
+TARGETS	= monitor-get-edid
+
+CFLAGS = -O -Wall # -g -DDEBUG
+OBJS = monitor-get-edid.c
+
+ifeq (y,$(HAS_VBE))
+OBJS += vbe.o libint10.a libx86emu.a
+else
+ifeq (y,$(HAS_OPEN_FIRMWARE))
+OBJS += open_firmware.o minifind.o
+else
+$(error "can't access EDID since neither VBE nor open firmware supported")
+endif
+endif
+
+
+all: $(TARGETS)
+
+monitor-get-edid: $(OBJS)
+
+libx86emu.a: x86emu/*.c
+	$(MAKE) -C x86emu
+
+libint10.a: int10/*.c
+	$(MAKE) -C int10
+
+clean:
+	$(MAKE) -C int10 clean
+	$(MAKE) -C x86emu clean
+	$(RM) $(TARGETS) *.a *.o *~
+	rm -rf $(PACKAGE)-$(VERSION) $(PACKAGE)-$(VERSION).tar.bz2
+
+
+# rules to build a test rpm
+
+localsrpm: localdist
+	rpm -ts $(PACKAGE)-$(VERSION).tar.bz2
+
+localrpm: localdist buildrpm
+
+localdist: cleandist dir localcopy tar
+
+cleandist: clean
+
+dir:
+	mkdir $(PACKAGE)-$(VERSION)
+
+localcopy:
+	tar c $(FILES) | tar x -C $(PACKAGE)-$(VERSION)
+
+tar:
+	tar cvf $(PACKAGE)-$(VERSION).tar $(PACKAGE)-$(VERSION)
+	bzip2 -9vf $(PACKAGE)-$(VERSION).tar
+	rm -rf $(PACKAGE)-$(VERSION)
+
+buildrpm:
+	rpm -ta $(PACKAGE)-$(VERSION).tar.bz2
diff --git a/README b/README
new file mode 100644
index 0000000..c51e9d6
--- /dev/null
+++ b/README
@@ -0,0 +1,16 @@
+EDID (Extended Display Identification Data) is a VESA standard data format
+that contains information about a monitor and its capabilities.
+
+The information is stored in the monitor and is used to communicate with the
+system through a Display Data Channel (DDC), which sites between the monitor
+and the PC graphics adapter.
+
+Inspired from:
+- read-edid
+- RedHat kudzu ddcprobe
+- SuSE hwinfo
+
+int10 and x86emu support by Gwenole Beauchesne <gbeauchesne@mandrakesoft.com>
+(partly from Xorg code)
+
+re-organised by Pixel <pixel@mandrakesoft.com>
diff --git a/get-edid.h b/get-edid.h
new file mode 100644
index 0000000..34bad70
--- /dev/null
+++ b/get-edid.h
@@ -0,0 +1 @@
+int get_edid(char *edid);
diff --git a/minifind.c b/minifind.c
new file mode 100644
index 0000000..f483055
--- /dev/null
+++ b/minifind.c
@@ -0,0 +1,77 @@
+/* minifind.c -- simple find library
+ * 
+ * Copyright (c) 2002 Terra Soft Solutions, Inc.
+ * Written by Dan Burcaw <dburcaw@terrasoftsolutions.com>
+ *
+ * This software may be freely redistributed under the terms of the GNU
+ * library public license.
+ *
+ * You should have received a copy of the GNU Library Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "minifind.h"
+
+// insert a node at head of linked-list
+void insert_node(struct pathNode *n, char *path)
+{
+  	struct pathNode *new = (struct pathNode *) malloc(sizeof(struct pathNode));
+  	new->path = path;
+  	new->next = n->next;
+  	n->next = new;
+}
+
+// return input strip less last character
+char *stripLastChar(char *in)
+{
+	char *out = malloc(sizeof(char)*strlen(in));
+	snprintf(out, strlen(in) - 1, "%s", in);
+	return out; 
+}
+
+// do the work
+char *minifind(char *dir, char *search, struct findNode *list)
+{
+  	char *d = NULL;
+  	int n;
+  	struct dirent **namelist;
+  	struct stat buf;
+ 
+  	if (dir[strlen(dir)-1] == '/')
+	  	dir = stripLastChar(dir);
+
+	// check is there is an exact filematch to dir
+	// when search is not specified
+	if (search == NULL)
+	{
+		if (lstat(dir, &buf) == 0)
+			insert_node(list->result, dir);
+		return 0;
+	}
+
+  	n = scandir(dir, &namelist, 0, alphasort);
+  	if (n >= 0)
+  	{
+      		while (n--)
+      		{
+          		d = malloc(sizeof(char) * (strlen(dir) \
+						+ strlen(namelist[n]->d_name)+1));
+          		sprintf(d, "%s/%s", dir, namelist[n]->d_name);	 
+			if (strstr(namelist[n]->d_name, search))
+		      		insert_node(list->result, d);
+      
+          		if ((lstat(d, &buf) == 0) && S_ISDIR(buf.st_mode))
+          		{
+              			if (strcmp(namelist[n]->d_name, ".") && 
+                  			strcmp(namelist[n]->d_name, ".."))
+	          			d = minifind(d, search, list);
+          		}
+      			free(namelist[n]);
+      		}
+  		free(namelist);
+  		return d;
+  	}
+  	return 0;
+}
diff --git a/minifind.h b/minifind.h
new file mode 100644
index 0000000..4f72525
--- /dev/null
+++ b/minifind.h
@@ -0,0 +1,42 @@
+/* minifind.h
+ * 
+ * Copyright (c) 2002 Terra Soft Solutions, Inc.
+ * Written by Dan Burcaw <dburcaw@terrasoftsolutions.com>
+ * 
+ * This software may be freely redistributed under the terms of the GNU
+ * library public license.
+ *
+ * You should have received a copy of the GNU Library Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef MINIFIND_H
+#define MINIFIND_H
+
+#include <stdio.h>
+#include <string.h>
+#include <dirent.h>
+#include <malloc.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+struct pathNode
+{
+  char *path;
+  struct pathNode *next;
+};
+
+struct findNode
+{
+  struct pathNode *result;
+  struct pathNode *exclude;
+};
+
+void insert_node(struct pathNode *n, char *path);
+char *stripLastChar(char *in);
+char *minifind(char *dir, char *search, struct findNode *list);
+
+#endif /* MINIFIND_H */
diff --git a/monitor-edid b/monitor-edid
new file mode 100755
index 0000000..4e183b2
--- /dev/null
+++ b/monitor-edid
@@ -0,0 +1,2 @@
+#!/bin/sh
+monitor-get-edid | monitor-parse-edid "$@"
diff --git a/monitor-edid.spec b/monitor-edid.spec
new file mode 100644
index 0000000..978d2f5
--- /dev/null
+++ b/monitor-edid.spec
@@ -0,0 +1,40 @@
+%define name monitor-edid
+%define version 1.0
+%define release 1mdk
+
+Summary: Get monitor details
+Name: %{name}
+Version: %{version}
+Release: %{release}
+Source0: %{name}-%{version}.tar.bz2
+License: GPL
+Group: System/Configuration/Other
+Url: http://www.mandrakelinux.com/cgi-bin/cvsweb.cgi/soft/monitor-edid
+BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-buildroot
+
+%description
+This package will try to read the monitor details directly from the
+monitor.
+
+%prep
+%setup -q
+
+%build
+make
+
+%install
+rm -rf $RPM_BUILD_ROOT
+install -d $RPM_BUILD_ROOT%_sbindir
+install monitor-edid monitor-get-edid monitor-parse-edid $RPM_BUILD_ROOT%_sbindir
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%files
+%defattr(-,root,root)
+%doc README
+%_sbindir/*
+
+%changelog
+* Wed Feb 23 2005 Pixel <pixel@mandrakesoft.com> 1.0-1mdk
+- first package
diff --git a/monitor-get-edid.c b/monitor-get-edid.c
new file mode 100644
index 0000000..ed5b480
--- /dev/null
+++ b/monitor-get-edid.c
@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdarg.h>
+#include "get-edid.h"
+
+int main(void)
+{
+  char edid[256];
+  int size = get_edid(edid);
+
+  if (size) write(1, edid, size);
+
+  return size ? 0 : 1;
+}
diff --git a/monitor-parse-edid b/monitor-parse-edid
new file mode 100755
index 0000000..b4b377c
--- /dev/null
+++ b/monitor-parse-edid
@@ -0,0 +1,279 @@
+#!/usr/bin/perl
+
+my @edid_info = group_by2(
+    a8 => '_header',
+    a2  => 'manufacturer_name',
+
+    v => 'product_code',
+    V => 'serial_number',
+    C => 'week',
+    C => 'year',
+    C => 'edid_version',
+    C => 'edid_revision',
+    a => 'video_input_definition',
+
+    C => 'max_size_horizontal', # in cm
+    C => 'max_size_vertical', # in cm
+    C => 'gamma',
+    a => 'feature_support',
+    a10 => '_color_characteristics',
+    a3  => '_established_timings',
+    a16 => '_standard_timings',
+    a72 => 'monitor_details',
+
+    C => 'extension_flag',
+    C => 'checksum',
+);
+
+my %subfields = (
+    manufacturer_name => [ group_by2(
+	1 => '',
+	5 => '1',
+	5 => '2',
+	5 => '3',
+    ) ],
+
+    video_input_definition => [ group_by2(
+	1 => 'digital',
+	1 => 'separate_sync',
+	1 => 'composite_sync',
+	1 => 'sync_on_green',
+	2 => '',
+	2 => 'voltage_level',
+    ) ],
+
+    feature_support => [ group_by2(
+	1 => 'DPMS_standby',
+	1 => 'DPMS_suspend',
+	1 => 'DPMS_active_off',
+	1 => '',
+	1 => 'rgb',
+    ) ],
+
+    detailed_timing => [ group_by2(
+	8 => 'horizontal_active',
+	8 => 'horizontal_blanking',
+	4 => 'horizontal_active_hi',
+	4 => 'horizontal_blanking_hi',
+	8 => 'vertical_active',
+	8 => 'vertical_blanking',
+	4 => 'vertical_active_hi',
+	4 => 'vertical_blanking_hi',
+	8 => 'horizontal_sync_offset',
+	8 => 'horizontal_sync_pulse_width',
+	4 => 'vertical_sync_offset',
+	4 => 'vertical_sync_pulse_width',
+	2 => 'horizontal_sync_offset_hi',
+	2 => 'horizontal_sync_pulse_width_hi',
+	2 => 'vertical_sync_offset_hi',
+	2 => 'vertical_sync_pulse_width_hi',
+	8 => 'horizontal_image_size', # in mm
+	8 => 'vertical_image_size', # in mm
+	4 => 'horizontal_image_size_hi',
+	4 => 'vertical_image_size_hi',
+	8 => 'horizontal_border',
+	8 => 'vertical_border',
+
+	1 => 'interlaced',
+	2 => 'stereo',      
+	2 => 'digital_composite',
+	1 => 'horizontal_sync_positive',
+	1 => 'vertical_sync_positive',
+	1 => '',
+    ) ],
+
+    monitor_range => [ group_by2(
+	8 => 'vertical_min',
+	8 => 'vertical_max',
+	8 => 'horizontal_min',
+	8 => 'horizontal_max',
+	8 => 'pixel_clock_max',
+    ) ],
+);
+
+sub get_many_bits {
+    my ($s, $field_name) = @_;
+    my @bits = split('', unpack('B*', $s));
+    my %h;
+    foreach (@{$subfields{$field_name}}) {
+	my ($size, $field) = @$_;
+	my @l = ('0' x (8 - $size), splice(@bits, 0, $size));
+	$h{$field} = unpack("C", pack('B*', join('', @l))) if $field && $field !~ /^_/;
+    }
+    \%h;
+}
+
+sub check_parsed_edid {
+    my ($edid) = @_;
+
+    $edid->{manufacturer_name} ne '@@@' or return 'bad manufacturer_name';
+    $edid->{product_code} != 0 or return 'bad product_code';
+    $edid->{edid_version} != 0xff && $edid->{edid_revision} != 0xff or return 'bad edid_version';
+
+    if ($edid->{monitor_range}) {
+	$edid->{monitor_range}{horizontal_min} && 
+	  $edid->{monitor_range}{horizontal_min} <= $edid->{monitor_range}{horizontal_max} 
+	    or return 'bad HorizSync';
+	$edid->{monitor_range}{vertical_min} &&
+	  $edid->{monitor_range}{vertical_min} <= $edid->{monitor_range}{vertical_max} 
+	    or return 'bad VertRefresh';
+    }
+
+    '';
+}
+
+sub parse_edid {
+    my ($raw_edid) = @_;
+
+    my %edid;
+    my @vals = unpack(join('', map { $_->[0] } @edid_info), $raw_edid);
+    my $i;
+    foreach (@edid_info) {
+	my ($field, $v) = ($_->[1], $vals[$i++]);
+
+	if ($field eq 'year') {
+	    $v += 1990;
+	} elsif ($field eq 'manufacturer_name') {
+	    my $h = get_many_bits($v, 'manufacturer_name');
+	    $v = join('', map { chr(ord('A') + $h->{$_} - 1) } 1 .. 3);
+	} elsif ($field eq 'video_input_definition') {
+	    $v = get_many_bits($v, 'video_input_definition');
+	} elsif ($field eq 'feature_support') {
+	    $v = get_many_bits($v, 'feature_support');
+	} elsif ($field eq 'monitor_details') {
+	    while ($v) {
+		(my $pixel_clock, my $vv, $v) = unpack("v a16 a*", $v);
+
+		if ($pixel_clock) {
+		    # detailed timing
+		    my $h = get_many_bits($vv, 'detailed_timing');
+		    $h->{pixel_clock} = $pixel_clock / 100; # to have it in MHz
+
+		    my %detailed_timing_field_size = map { $_->[1], $_->[0] } @{$subfields{detailed_timing}};
+		    foreach my $field (keys %detailed_timing_field_size) {
+			$field =~ s/_hi$// or next;
+			my $hi = delete($h->{$field . '_hi'});
+			$h->{$field} += $hi << $detailed_timing_field_size{$field};
+		    }
+		    push @{$edid{detailed_timings}}, $h;
+		} else {
+		    (my $flag, $vv) = unpack("n x a*", $vv);
+
+		    if ($flag == 0xfd) {
+			# range
+			$edid{monitor_range} = get_many_bits($vv, 'monitor_range');
+			if ($edid{monitor_range}{pixel_clock_max} == 0xff) {
+			    delete $edid{monitor_range}{pixel_clock_max};
+			} else {
+			    $edid{monitor_range}{pixel_clock_max} *= 10; #- to have it in MHz
+			}
+		    } elsif ($flag == 0xfc) {
+			my $prev = $edid{monitor_name};
+			$edid{monitor_name} = ($prev ? "$prev " : '') . unpack('A13', $vv);
+		    } elsif ($flag == 0xfe) {
+			push @{$edid{monitor_text}}, unpack('A13', $vv);
+		    } elsif ($flag == 0xff) {
+			push @{$edid{serial_number2}}, unpack('A13', $vv);
+		    } else {
+			#warn "parse_edid: unknown flag $flag\n";
+		    }
+		}
+	    }
+	}
+
+	$edid{$field} = $v if $field && $field !~ /^_/;
+    }
+
+    $edid{EISA} = $edid{manufacturer_name} . sprintf('%x', $edid{product_code});
+
+    \%edid;
+}
+
+sub print_edid {
+    my ($edid) = @_;
+    my $diagonal_inches = sqrt(sqr($edid->{max_size_horizontal}) + 
+				 sqr($edid->{max_size_vertical})) / 2.54;
+
+    print "Name: $edid->{monitor_name}\n";
+    print "EISA ID: $edid->{EISA}\n";
+    printf "Screen size: %d cm x %d cm (%3.2f inches)\n", $edid->{max_size_horizontal}, $edid->{max_size_vertical}, $diagonal_inches * 1.08;
+    
+    print "Gamma: ", $edid->{gamma} / 100 + 1, "\n";
+    printf "%s signal\n", $edid->{video_input_definition}{digital} ? 'Digital' : 'Analog';
+
+    if ($edid->{monitor_range}) {
+	printf "Max video bandwidth: %u MHz\n", $edid->{monitor_range}{pixel_clock_max};
+	print "\n";
+	printf "\tHorizSync %u-%u\n", $edid->{monitor_range}{horizontal_min}, $edid->{monitor_range}{horizontal_max};
+	printf "\tVertRefresh %u-%u\n", $edid->{monitor_range}{vertical_min}, $edid->{monitor_range}{vertical_max};
+    }
+
+    foreach my $h (@{$edid->{detailed_timings}}) {
+	my $horizontal_total = $h->{horizontal_active} + $h->{horizontal_blanking};
+	my $vertical_total = $h->{vertical_active} + $h->{vertical_blanking};
+
+	print "\n";
+	printf qq(\t# %dx%d @ %.1f Hz, %.1f kHz hsync\n),
+	  $h->{horizontal_active}, $h->{vertical_active},
+	  $h->{pixel_clock} / $horizontal_total / $vertical_total * 1000 * 1000,
+	  $h->{pixel_clock} / $horizontal_total * 1000;
+	  
+	printf qq(\tModeLine "%dx%d" $h->{pixel_clock} %d %d %d %d %d %d %d %d\n),
+	  $h->{horizontal_active}, $h->{vertical_active},
+
+	  $h->{horizontal_active},
+	  $h->{horizontal_active} + $h->{horizontal_sync_offset}, 
+	  $h->{horizontal_active} + $h->{horizontal_sync_offset} + $h->{horizontal_sync_pulse_width},
+	  $h->{horizontal_total},
+
+	  $h->{vertical_active},
+	  $h->{vertical_active} + $h->{vertical_sync_offset}, 
+	  $h->{vertical_active} + $h->{vertical_sync_offset} + $h->{vertical_sync_pulse_width},
+	  $h->{vertical_total};
+    }
+}
+
+sub usage() {
+    die "usage: monitor-parse-edid [--perl] [<edid file>]\n";
+}
+
+use Getopt::Long;
+GetOptions(
+    'perl' => \ (my $raw_perl),
+) or usage();
+
+my $F;
+if (@ARGV == 0) {
+    $F = *STDIN;
+} elsif (@ARGV == 1) {
+    open($F, $ARGV[0]) or usage();
+} else {
+    usage();
+}
+
+my $raw_edid = join('', <$F>);
+
+length($raw_edid) == 128 || length($raw_edid) == 256 or die "parse-edid: bad edid length\n";
+
+my $edid = parse_edid($raw_edid);
+if (my $err = check_parsed_edid($edid)) {
+    die "$err\n";
+}
+
+if ($raw_perl) {
+    use Data::Dumper;
+    $Data::Dumper::Sortkeys = 1;
+    print Dumper($edid);
+} else {
+    print_edid($edid);
+}
+
+
+sub sqr { $_[0] * $_[0] }
+sub group_by2 {
+    my @l;
+    for (my $i = 0; $i < @_; $i += 2) {
+	push @l, [ $_[$i], $_[$i+1] ];
+    }
+    @l;
+}
diff --git a/open_firmware.c b/open_firmware.c
new file mode 100644
index 0000000..2170e70
--- /dev/null
+++ b/open_firmware.c
@@ -0,0 +1,55 @@
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <netinet/in.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <limits.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/fb.h>
+#include "get-edid.h"
+#include "minifind.h"
+
+int get_edid(char *edid)
+{
+	struct pathNode *n;
+	struct findNode *list;
+	FILE* edid_file = NULL;
+	char *path = NULL;
+
+	list = (struct findNode *) malloc(sizeof(struct findNode));
+        list->result = (struct pathNode *) malloc(sizeof(struct pathNode));
+        list->result->path = NULL;
+        list->result->next = list->result;
+
+	minifind("/proc/device-tree", "EDID", list);
+
+	for (n = list->result->next; n != list->result; n = n->next)
+	{
+		path = n->path;
+		break;
+	}
+
+	if (path)
+		edid_file = fopen(path, "rb");
+
+	if (edid_file)
+	{
+		int size = fread(edid, sizeof(unsigned char), 0x80, edid_file);
+		fclose(edid_file);
+		return size == 0x80 ? 0x80 : 0;
+	} else
+		return 0;
+
+#if 0
+	memcpy(&man, &ret->manufacturer_name, 2);
+	man = ntohs(man);
+	memcpy(&ret->manufacturer_name, &man, 2);
+
+	/* byteswap to match the contents of MonitorsDB */
+	ret->product_code = ((ret->product_code >> 8) & 0xff) | ((ret->product_code & 0xff) << 8);
+#endif
+}
diff --git a/vbe.c b/vbe.c
new file mode 100644
index 0000000..eb6c918
--- /dev/null
+++ b/vbe.c
@@ -0,0 +1,214 @@
+#include <sys/types.h>
+#if defined(__i386__) || defined(__x86_64__) || defined(__ia64__)
+#include <sys/io.h>
+#endif
+#include <sys/mman.h>
+#include <netinet/in.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <limits.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include "get-edid.h"
+#include "int10/vbios.h"
+
+#ifdef __i386__
+#define cpuemu 1
+#else
+#define cpuemu 0
+#endif
+
+#include <stdarg.h>
+
+/* used by libint10 */
+void log_err(char *format, ...)
+{
+  va_list args;
+  va_start(args, format);
+  vfprintf(stderr, format, args);
+  va_end(args);
+}
+
+#ifdef DEBUG
+/* Record returned by int 0x10, function 0x4f, subfunction 0x00. */
+struct vbe_info {
+  unsigned int version;
+  unsigned int oem_version;
+  unsigned int memory_size;
+  char *oem_name;
+  char *vendor_name;
+  char *product_name;
+  char *product_revision;
+  unsigned int modes;
+  unsigned int mode_list[0x100];
+};
+
+/*
+ * Create a 'canonical' version, i.e. no spaces at start and end.
+ *
+ * Note: removes chars >= 0x80 as well (due to (char *))! This
+ * is currently considered a feature.
+ */
+static char *canon_str(char *s, int len)
+{
+  char *m2, *m1, *m0 = malloc(len + 1);
+  int i;
+
+  for(m1 = m0, i = 0; i < len; i++) {
+    if(m1 == m0 && s[i] <= ' ') continue;
+    *m1++ = s[i];
+  }
+  *m1 = 0;
+  while(m1 > m0 && m1[-1] <= ' ') {
+    *--m1 = 0;
+  }
+
+  m2 = strdup(m0);
+  free(m0);
+
+  return m2;
+}
+
+static unsigned segofs2addr(unsigned char *segofs)
+{
+  return segofs[0] + (segofs[1] << 8) + (segofs[2] << 4)+ (segofs[3] << 12);
+}
+
+
+static unsigned get_data(unsigned char *buf, unsigned buf_size, unsigned addr)
+{
+  unsigned bufferaddr = 0x7e00;
+  unsigned len;
+
+  *buf = 0;
+  len = 0;
+
+  if(addr >= bufferaddr && addr < bufferaddr + 0x200) {
+    len = bufferaddr + 0x200 - addr;
+    if(len >= buf_size) len = buf_size - 1;
+    memcpy(buf, addr + (char *) 0, len);
+  }
+  else if(addr >= 0x0c0000 && addr < 0x100000) {
+    len = 0x100000 - addr;
+    if(len >= buf_size) len = buf_size - 1;
+    memcpy(buf, addr + (char *) 0, len);
+  }
+
+  buf[len] = 0;
+
+  return len;
+}
+#endif
+
+#define GET_WORD(ADDR, OFS) ((ADDR)[OFS] + ((ADDR)[(OFS) + 1] << 8))
+
+int vbe_check_vbe_info(void)
+{
+  int i;
+  unsigned char v[0x200];
+  int ax, bx, cx;
+
+  /* Setup registers for the interrupt call */
+  ax = 0x4f00;
+  bx = 0;
+  cx = 0;
+  memset(v, 0, sizeof(v));
+  strcpy(v, "VBE2");
+
+  /* Get VBE block */
+  i = CallInt10(&ax, &bx, &cx, v, sizeof(v), cpuemu) & 0xffff;
+  if (i != 0x4f) {
+#ifdef DEBUG
+    log_err("VBE: Error (0x4f00): 0x%04x\n", i);
+#endif
+    return 0;
+  }
+
+#ifdef DEBUG
+ {
+   int l, u;
+   unsigned char tmp[1024];
+   struct vbe_info vbe;
+
+   /* Parse VBE block */
+   vbe.version = GET_WORD(v, 0x04);
+   vbe.oem_version = GET_WORD(v, 0x14);
+   vbe.memory_size = GET_WORD(v, 0x12) << 16;
+   log_err("version = %u.%u, oem version = %u.%u\n",
+	   vbe.version >> 8, vbe.version & 0xff, vbe.oem_version >> 8, vbe.oem_version & 0xff);
+   log_err("memory = %uk\n", vbe.memory_size >> 10);
+
+   l = get_data(tmp, sizeof tmp, u = segofs2addr(v + 0x06));
+   vbe.oem_name = canon_str(tmp, l);
+   log_err("oem name [0x%05x] = \"%s\"\n", u, vbe.oem_name);
+
+   l = get_data(tmp, sizeof tmp, u = segofs2addr(v + 0x16));
+   vbe.vendor_name = canon_str(tmp, l);
+   log_err("vendor name [0x%05x] = \"%s\"\n", u, vbe.vendor_name);
+
+   l = get_data(tmp, sizeof tmp, u = segofs2addr(v + 0x1a));
+   vbe.product_name = canon_str(tmp, l);
+   log_err("product name [0x%05x] = \"%s\"\n", u, vbe.product_name);
+
+   l = get_data(tmp, sizeof tmp, u = segofs2addr(v + 0x1e));
+   vbe.product_revision = canon_str(tmp, l);
+   log_err("product revision [0x%05x] = \"%s\"\n", u, vbe.product_revision);
+
+   l = get_data(tmp, sizeof tmp, u = segofs2addr(v + 0x0e)) >> 1;
+   for(i = vbe.modes = 0; i < l && i < sizeof vbe.mode_list / sizeof *vbe.mode_list; i++) {
+     u = GET_WORD(tmp, 2 * i);
+     if(u != 0xffff)
+       vbe.mode_list[vbe.modes++] = u;
+     else
+       break;
+   }
+   log_err("%u video modes\n", vbe.modes);
+ }
+#endif
+  return 1;
+}
+
+/* Get EDID info. */
+int vbe_get_edid_info(char *edid)
+{
+  int i;
+  int ax, bx, cx;
+
+  /* Setup registers for the interrupt call */
+  ax = 0x4f15;
+  bx = 1;
+  cx = 0;
+
+  /* Get EDID block */
+  i = CallInt10(&ax, &bx, &cx, edid, 256, cpuemu) & 0xffff;
+  if (i != 0x4f) {
+#ifdef DEBUG
+    log_err("EDID: Error (0x4f15): 0x%04x\n", i);
+#endif
+    return 0;
+  }
+
+  return 1;
+}
+
+int get_edid(char *edid)
+{
+  int pci_config_type = 1; /* Determine PCI configuration type */
+  int ok;
+
+  /* Initialize Int10 */
+  ok = InitInt10(pci_config_type) == 0;
+
+  if (ok) {
+    ok = 
+      vbe_check_vbe_info() &&
+      vbe_get_edid_info(edid);
+
+    FreeInt10();
+  }
+
+  return ok ? 128 : 0;
+}