Drivemap fixes

	* commands/i386/pc/drivemap.c (grub_get_root_biosnumber_drivemap):
	new function
	(grub_get_root_biosnumber_saved): new variable
	(GRUB_MOD_INIT): register grub_get_root_biosnumber_drivemap
	(GRUB_MOD_FINI): unregister grub_get_root_biosnumber_drivemap
	* commands/i386/pc/drivemap_int13h.S (grub_drivemap_handler): restore 
	%dx after the call if necessary
	* conf/common.rmk (pkglib_MODULES): remove boot.mod
	(boot_mod_SOURCES): remove
	(boot_mod_CFLAGS): remove
	(boot_mod_LDFLAGS): remove
	* conf/i386-coreboot.rmk (pkglib_MODULES): add boot.mod
	(boot_mod_SOURCES): new variable
	(boot_mod_CFLAGS): likewise
	(boot_mod_LDFLAGS): likewise
	* conf/i386-efi.rmk: likewise
	* conf/i386-ieee1275.rmk: likewise
	* conf/i386-pc.rmk: likewise
	* conf/powerpc-ieee1275.rmk: likewise
	* conf/sparc64-ieee1275.rmk: likewise
	* conf/x86_64-efi.rmk: likewise
	* include/grub/i386/pc/biosnum.h: new file
	* lib/i386/pc/biosnum.c: likewise
	* loader/i386/bsd.c (grub_bsd_get_device): use grub_get_root_biosnumber
	* loader/i386/multiboot.c (grub_multiboot_get_bootdev): likewise
	* loader/i386/pc/chainloader.c (grub_chainloader_cmd): likewise
	

	* util/sparc64/ieee1275/grub-setup.c: New file.
	* util/sparc64/ieee1275/grub-ofpathname.c: New file.
	* util/sparc64/ieee1275/grub-mkimage.c: New file.
	* util/sparc64/ieee1275/grub-install.in: New file.
	* util/ieee1275/ofpath.c: New file.
	* util/ieee1275/devicemap.c: New file.
	* util/devicemap.c: New file.
	* util/deviceiter.c: New file.
	* kern/sparc64/ieee1275/init.c: New file.
	* include/grub/util/ofpath.h: New file.
	* include/grub/util/deviceiter.h: New file.
	* util/grub-mkdevicemap.c: Include deviceiter.h.
	Implement using grub_util_emit_devicemap_entry and
	grub_util_iterate_devices.
	* conf/i386-corebook.rmk: Build util/deviceiter.c and
	util/devicemap.c into grub-mkdevicemap
	* conf/i386-efi.rmk: Likewise.
	* conf/i386-ieee1275.rmk: Likewise.
	* conf/i386-pc.rmk: Likewise.
	* conf/powerpc-ieee1275.rmk: Likewise.
	* conf/sparc64-ieee1275.rmk: Add rules to build boot block
	images and installation utilities.  Build kernel as image
	instead of as elf binary.  Use common rules as much as possible.

	* include/grub/sparc64/ieee1275/memory.h: Likewise.
	* include/grub/sparc64/kernel.h: Likewise.
	* loader/sparc64/ieee1275/linux.c: Likewise.

        Fix i386-ieee1275 build.

        * include/grub/i386/ieee1275/loader.h (grub_multiboot2_real_boot):
        Remove declaration.

	* Makefile.in (RMKFILES): Add missing arch i386-ieee1275 and
	i386-linuxbios.

	* commands/hexdump.c (grub_cmd_hexdump): Support dumping of device,
	change the buffer size to 4096 for cdrom device.

	* conf/i386-ieee1275.rmk (pkglib_MODULES): Add _linux.mod, linux.mod
	and nand.mod.
	(_linux_mod_SOURCES): New variable.
	(_linux_mod_CFLAGS): Likewise.
	(_linux_mod_LDFLAGS): Likewise.
	(linux_mod_SOURCES): Likewise.
	(linux_mod_CFLAGS): Likewise.
	(linux_mod_LDFLAGS): Likewise.
	(nand_mod_SOURCES): Likewise.
	(nand_mod_CFLAGS): Likewise.
	(nand_mod_LDFLAGS): Likewise.

	* disk/ieee1275/ofdisk.c (grub_ofdisk_open): Return
	GRUB_ERR_UNKNOWN_DEVICE instead of GRUB_ERR_BAD_DEVICE if no device
	type property. (nand device in olpc don't have this property)

	* include/grub/disk.h (grub_disk_dev_id): New macro
	GRUB_DISK_DEVICE_NAND_ID.

	* include/grub/i386/ieee1275/loader.h (grub_rescue_cmd_linux): New
	function prototype.
	(grub_rescue_cmd_initrd): Likewise.

	* include/grub/i386/linux.h (GRUB_LINUX_OFW_SIGNATURE): New macro.
	(linux_kernel_params): Add new member ofw_signature, ofw_num_items,
	ofw_cif_handler and ofw_idt, adjust padding number.

	* include/grub/i386/pc/memory.h (grub_upper_mem): Export it if
	GRUB_MACHINE_IEEE1275 is defined.

	* include/grub/ieee1275/ieee1275.h (grub_available_iterate):
	Use NESTED_FUNC_ATTR attribute on the hook parameter.

	* kern/powerpc/ieee1275/init.c (grub_claim_heap): Use NESTED_FUNC_ATTR
	on nested function heap_init.
	(grub_upper_mem): New variable for i386-ieee1275.
	(grub_get_extended_memory): New function for i386-ieee1275.
	(grub_machine_init): Call grub_get_extended_memory for i386-ieee1275.

	* kern/powerpc/ieee1275/openfw.c (grub_available_iterate): Use
	NESTED_FUNC_ATTR on the hook parameter. Don't quit if no device type
	property.

	* loader/i386/ieee1275/linux.c: New file.

	* loader/i386/ieee1275/linux_normal.c: New file.

	* disk/ieee1275/nand.c: New file.

        * include/grub/i386/ieee1275/loader.h: Include `<grub/types.h>',
        `<grub/symbol.h>' and `<grub/multiboot.h>'.
        (grub_multiboot2_real_boot): New function prototype.

        * include/grub/i386/pc/memory.h: Include `<grub/machine/machine.h>'.
        [!GRUB_MACHINE_IEEE1275] (grub_lower_mem, grub_upper_mem): Disable.

        * kern/i386/ieee1275/init.c (grub_os_area_addr)
        (grub_os_area_size, grub_lower_mem, grub_upper_mem): Remove variables.

        * conf/i386-ieee1275.rmk (kernel_elf_SOURCES): Add `machine/loader.h'
        and `machine/memory.h'.
        (pkglib_MODULES): Add `multiboot.mod' and `_multiboot.mod'.
        (_multiboot_mod_SOURCES): New variable.
        (_multiboot_mod_CFLAGS): Likewise.
        (_multiboot_mod_LDFLAGS): Likewise.
        (multiboot_mod_SOURCES): Likewise.
        (multiboot_mod_CFLAGS): Likewise.
        (multiboot_mod_LDFLAGS): Likewise.

        * include/grub/i386/ieee1275/loader.h: New file.

        * include/grub/i386/ieee1275/machine.h: Likewise.

        * include/grub/i386/ieee1275/memory.h: Likewise.

        * include/grub/i386/pc/init.h (grub_os_area_addr): Remove (redundant)
        variable declaration.
        (grub_os_area_size): Likewise.

        * kern/i386/ieee1275/init.c (grub_os_area_addr, grub_os_area_size)
        (grub_lower_mem, grub_upper_mem): New variables.
        (grub_stop_floppy): New function (just to make
        grub_multiboot2_real_boot() happy).

        * kern/i386/ieee1275/startup.S: Include `<grub/machine/memory.h>',
        `<grub/cpu/linux.h>', `<multiboot.h>' and `<multiboot2.h>'.
        (grub_stop): New function.
        Include `"../realmode.S"' and `"../loader.S"'.

        * loader/multiboot_loader.c: Include `<grub/machine/machine.h>'.
        Replace `__i386__' #ifdefs with `GRUB_MACHINE_PCBIOS'.

        * loader/powerpc/ieee1275/multiboot2.c (grub_mb2_arch_boot): On i386,
        rely on grub_multiboot2_real_boot() for final boot.

	* configure.ac: Add `i386-linuxbios' to the list of supported targets.

	* conf/i386-linuxbios.rmk: New file.

	* kern/i386/pc/hardware.c: Likewise.
	* term/i386/pc/at_keyboard.c: Likewise.
	* term/i386/pc/vga_text.c: Likewise.

	* include/grub/i386/linuxbios/boot.h: Likewise.
	* include/grub/i386/linuxbios/console.h: Likewise.
	* include/grub/i386/linuxbios/init.h: Likewise.
	* include/grub/i386/linuxbios/kernel.h: Likewise.
	* include/grub/i386/linuxbios/loader.h: Likewise.
	* include/grub/i386/linuxbios/memory.h: Likewise.
	* include/grub/i386/linuxbios/serial.h: Likewise.
	* include/grub/i386/linuxbios/time.h: Likewise.

	* kern/i386/linuxbios/init.c: Likewise.
	* kern/i386/linuxbios/startup.S: Likewise.
	* kern/i386/linuxbios/table.c: Likewise.