* grub-core/loader/multiboot_mbi2.c (grub_multiboot_load): Declare new tags as supported. (acpiv2_size): New function. (grub_multiboot_get_mbi_size): Take new tags into account. (grub_multiboot_make_mbi): Add new tags. * include/grub/multiboot.h (GRUB_MACHINE_HAS_ACPI): New definition.