From dc51af59a4630d73add1ceadfdbc8bd780a2850f Mon Sep 17 00:00:00 2001
From: Michael Brown <mcb30@etherboot.org>
Date: Thu, 11 Jan 2007 18:41:15 +0000
Subject: [PATCH] Capable of starting a multiboot kernel (albeit without the
 multiboot information table yet).

---
 src/arch/i386/image/multiboot.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/arch/i386/image/multiboot.c b/src/arch/i386/image/multiboot.c
index cbab6a5c..cfe4589a 100644
--- a/src/arch/i386/image/multiboot.c
+++ b/src/arch/i386/image/multiboot.c
@@ -74,8 +74,21 @@ struct multiboot_header_info {
  * @v image		ELF file
  * @ret rc		Return status code
  */
-static int multiboot_execute ( struct image *image __unused ) {
-	return -ENOTSUP;
+static int multiboot_execute ( struct image *image ) {
+	struct multiboot_info mbinfo;
+
+	/* Populate multiboot information structure */
+	memset ( &mbinfo, 0, sizeof ( mbinfo ) );
+	
+
+	/* Jump to OS with flat physical addressing */
+	__asm__ ( PHYS_CODE ( "call *%%edi\n\t" )
+		  : : "a" ( MULTIBOOT_BOOTLOADER_MAGIC ),
+		      "b" ( virt_to_phys ( &mbinfo ) ),
+		      "D" ( image->entry )
+		  : "ecx", "edx", "esi", "ebp" );
+
+	return -ECANCELED;
 }
 
 /**