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#ifdef CONFIG_FB

#define MULTIBOOT_LOADER_MAGIC  0x2BADB002

#define MBINFO_BIT_CMDLINE      2

#define MBINFO_OFFSET_CMDLINE   16

	# copy real mode VESA initialization code

	mov $vesa_init, %esi

	mov $VESA_INIT_SEGMENT << 4, %edi

	mov $e_vesa_init - vesa_init, %ecx

	rep movsb

	# check for GRUB command line

	mov grub_eax, %eax

	cmp $MULTIBOOT_LOADER_MAGIC, %eax

	jne no_cmdline

	mov grub_ebx, %ebx

	mov (%ebx), %eax

	bt $MBINFO_BIT_CMDLINE, %eax

	jnc no_cmdline

	# skip the kernel path in command line

	mov MBINFO_OFFSET_CMDLINE(%ebx), %esi

	skip_loop:

		lodsb

		cmp $0, %al

		je no_cmdline

		cmp $' ', %al

		je skip_loop_done

		jmp skip_loop

	skip_loop_done:

	space_loop:

		mov (%esi), %al

		cmp $0, %al

		je no_cmdline

		cmp $' ', %al

		jne space_loop_done

		inc %esi

		jmp space_loop

	space_loop_done:

	# copy at most 23 characters from command line

	mov $VESA_INIT_SEGMENT << 4, %edi

	add $default_mode - vesa_init, %edi

	mov $23, %ecx

	cmd_loop:

		lodsb

		stosb

		cmp $0, %al

		je cmd_loop_done

		loop cmd_loop

	cmd_loop_done:

	# zero termination

	xor %eax, %eax

	stosb

	no_cmdline:

	# jump to the real mode

	mov $VESA_INIT_SEGMENT << 4, %edi

	jmpl *%edi

	vesa_meeting_point:

		# returned back to protected mode

		mov %esi, KA2PA(vesa_ph_addr)

		mov %di, KA2PA(vesa_height)

		shr $16, %edi

		mov %di, KA2PA(vesa_width)

		mov %bx, KA2PA(vesa_scanline)

		shr $16, %ebx

		mov %bx, KA2PA(vesa_bpp)

#endif