Changeset f944715 in mainline

Timestamp:

2005-09-01T09:02:53Z (19 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

c842f04

Parents:

dbe9ff0

Message:

IA-32 GRUB support (alpha)

Location:

arch/ia32

Files:

• include/boot/boot.h (added)
• src/boot/boot.S (modified) (2 diffs)

arch/ia32/src/boot/boot.S

@@ -26 +26 @@
 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
+
+#include <arch/boot/boot.h>
 
 .section K_TEXT_START
@@ -55 +57 @@
         movl %eax,%cr0                  # switch to protected mode
         jmpl $8,$meeting_point
+
+.code32
+.align 4
+multiboot_header:
+        .long MULTIBOOT_HEADER_MAGIC
+        .long MULTIBOOT_HEADER_FLAGS
+        .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)        # checksum
+        .long multiboot_header
+        .long unmapped_ktext_start
+        .long 0
+        .long 0
+        .long multiboot_image_start
+        
+multiboot_image_start:
+        movl $0x7c00, %esp              # initialize stack pointer
+        
+        lgdt gdtr
+        lidt idtr
+
 meeting_point:
-.code32
-
         movw $16,%ax
         movw %ax,%es