Video multiboot support.
* include/grub/multiboot.h (grub_multiboot_set_accepts_video):
New prototype.
* include/multiboot.h: Resynced with multiboot specification.
* include/multiboot2.h: Likewise.
* loader/i386/multiboot.c (UNSUPPORTED_FLAGS): Support video flags.
(grub_multiboot): Parse MULTIBOOT_VIDEO_MODE fields.
* loader/i386/multiboot_mbi.c (DEFAULT_VIDEO_MODE): New constant.
(HAS_VGA_TEXT): Likewise.
(accepts_video): New variable.
(grub_multiboot_set_accepts_video): New function.
(grub_multiboot_get_mbi_size): Account for video structures.
(set_video_mode): New function.
(retrieve_video_parameters): Likewise.
(grub_multiboot_make_mbi): Fill video fields.
For consistency with [multiboot]/docs/boot.S.
* include/multiboot.h (MULTIBOOT_MAGIC): Rename from this ...
(MULTIBOOT_HEADER_MAGIC): ... to this. Update all users.
(MULTIBOOT_MAGIC2): Rename from this ...
(MULTIBOOT_BOOTLOADER_MAGIC): ... to this. Update all users.
* include/grub/multiboot.h (struct grub_multiboot_header): Move
from here ...
* include/multiboot.h (struct multiboot_header): ... to here. Update
all users.
* include/grub/multiboot.h (struct grub_multiboot_info): Move
from here ...
* include/multiboot.h (struct multiboot_info): ... to here. Update
all users.
* include/grub/multiboot.h (struct grub_multiboot_mmap_entry): Move
from here ...
* include/multiboot.h (struct multiboot_mmap_entry): ... to here.
Update all users.
* include/grub/multiboot.h (struct grub_mod_list): Move
from here ...
* include/multiboot.h (struct multiboot_mod_list): ... to here.
Update all users.
* include/multiboot.h (MULTIBOOT_INFO_ALIGN): New macro.
* loader/i386/pc/multiboot.c (grub_multiboot): Include the MBI
in our relocation, instead of using it directly from heap. Also
use `MULTIBOOT_INFO_ALIGN' to ensure it is aligned.
for powerpc & i386-pc. This patch was more so started by Hollis
Blanchard getting multiboot 2 working for powerpc and I added to it
and cleaned it up.
One of the ideas with this patch is to keep everything under one
command for the user. So instead of having a "multiboot2" & "module2"
command, I created a proxy like mechanism so that you have only one
command for both multiboot 1 & 2 ... "multiboot". This is where
"loader/multiboot_loader.c" comes from. I could have integrated things
more but I figure the current approach will less likely break
anything.
So if your OS is multiboot 2 capable, the user would do the following
to load it up from a grub prompt:
grub> multiboot <location of kernel> <kernel args>
grub> module <some image> <multiboot tag> <image arguments>
grub> module <isome mage> <multiboot tag> <image arguments>
grub .....
The other thing that this patch does is it begins to make the
multiboot 1 code a bit more architecture agnostic so IF someone wanted
to implement it on another architecture they can.
A bit of file moving around and definition renaming is also apart of
this patch. I have also taken the time to make sure that it does not
break multiboot 1 loading on i386-pc. But mulitboot 2 may still need a
little more testing and work for i386-pc. Powerpc multiboot 2 has been
heavily tested and does work.
