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arch/i386: Add multiboot support

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This commit is contained in:
Aaron Lindsay
2012-12-24 12:44:48 -05:00
parent 62755b8f38
commit b98aa76334
6 changed files with 287 additions and 9 deletions
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12
arch/i386/start.S
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@ -47,8 +47,8 @@
*/
.global start
start:
movl %eax, virt_to_phys(magic) /* Save off multiboot magic number */
movl %ebx, virt_to_phys(mbd) /* Save off multiboot data structure */
movl %eax, virt_to_phys(multiboot_magic)/* Save off multiboot magic number */
movl %ebx, virt_to_phys(multiboot_mbd) /* Save off multiboot data structure */
movl $virt_to_phys(init_page_dir), %eax /* load page directory base register */
movl %eax, %cr3
@ -134,10 +134,10 @@ init_page_dir:
.lcomm stack, STACK_SIZE /* reserve stack space on a doubleword boundary */
/* place to store multiboot header information */
.global mbd
.comm mbd, 4 /* we will use this in i386_main */
.global magic
.comm magic, 4 /* we will use this in i386_main */
.global multiboot_mbd
.comm multiboot_mbd, 4 /* we will use this in i386_main */
.global multiboot_magic
.comm multiboot_magic, 4 /* we will use this in i386_main */
/* TODO FIXME remove this - needs fix to dependencies first */
.global atags_ptr