Index: arch/ia32/include/boot/memmap.h
===================================================================
--- arch/ia32/include/boot/memmap.h	(revision d5d2a3ff84d6d7012c3225ebf93d3becc7bfeb68)
+++ arch/ia32/include/boot/memmap.h	(revision 299804694cf451bb0e9cafc7a5c0da0d9a9e4e74)
@@ -41,4 +41,7 @@
 #define MEMMAP_MEMORY_UNUSABLE	5 
 
-
+	 /* size of one entry */
+#define MEMMAP_E820_RECORD_SIZE 20 
+	/* maximum entries */
+#define MEMMAP_E820_MAX_RECORDS 32 
 #endif
Index: arch/ia32/src/boot/memmap.S
===================================================================
--- arch/ia32/src/boot/memmap.S	(revision d5d2a3ff84d6d7012c3225ebf93d3becc7bfeb68)
+++ arch/ia32/src/boot/memmap.S	(revision 299804694cf451bb0e9cafc7a5c0da0d9a9e4e74)
@@ -1,3 +1,29 @@
-
+/*
+ * Copyright (C) 2005 Josef Cejka
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
 
 
@@ -9,5 +35,55 @@
 .section K_TEXT_START
 
+
+E820_RECORD_SIZE = MEMMAP_E820_RECORD_SIZE
+E820_MAX_RECORDS = MEMMAP_E820_MAX_RECORDS
+E820_SMAP = 0x534d4150
+
+.global memmap_arch_init
+
+.code16
+.section K_TEXT_START
+
 memmap_arch_init:
-    
-    ret
+	
+e820begin:
+	xorl	%ebx,%ebx	#at first call must be ebx==0
+	
+	movw	$e820table,%di
+	movb	$E820_MAX_RECORDS,(e820counter)
+e820loop:	
+	movl	$E820_SMAP,%edx 	# constrol sequence "SMAP"
+	pushw	%ds
+	popw	%es		# e820 buffer address
+
+	movl	$0xe820,%eax		# service
+	movl	$E820_RECORD_SIZE,%ecx
+	int 	$0x15
+	jc		e820end	
+	
+	
+	cmpl	$E820_SMAP,%eax		# verifiing BIOS
+	jne		e820end
+	
+	movw	%di,%ax		# next record
+	addw	$E820_RECORD_SIZE,%ax
+	movw	%ax,%di
+		
+	decb	(e820counter)
+	jnz		e820loop
+	
+e820end:
+	
+	movb	(e820counter),%al	
+	negb	%al
+	addb	$32,%al
+	movb	%al,(e820counter) # store # of valid entries in e820counter
+	
+	ret
+
+
+e820counter:
+	.byte 0
+		 
+e820table:
+	.space  (32*E820_RECORD_SIZE),0 #prostor na 32 zaznamu delky E820_RECORD_SIZE