first shot of legacybios emulation.

does not work yet.. sorry :-(


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1119 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

util/extensions/legacybios/arch/x86/boot.S

@@ -0,0 +1,39 @@
+/* boot.S 
+ * assembler bootstrap
+ *
+ * Copyright (C) 2003 Stefan Reinauer
+ *
+ * See the file "COPYING" for further information about
+ * the copyright and warranty status of this work.
+ */
+
+#define ASM 1
+#include <multiboot.h>
+
+	.text
+
+	.code32
+	.globl	start, _start
+
+	/* unused */
+start:
+_start:
+	/* Initialize stack pointer.  */
+	movl	$(stack + STACK_SIZE), %esp
+
+	/* Reset EFLAGS.  */
+	pushl	$0
+	popf
+
+	/* parameter 2  */
+	pushl	%ebx
+	/* parameter 1  */
+	pushl	%eax
+
+	/* jump to C main function...  */
+	call	EXT_C(cmain)
+
+loop:	hlt
+	jmp	loop
+
+	.comm	stack, STACK_SIZE /* stack area.  */