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Author SHA1 Message Date
okuji
9be6b98b6f 2008-02-03 Yoshinori K. Okuji <okuji@enbug.org> 
Add support for having a grub directory in a different drive. This
    is still only the data handling part.

    * kern/i386/pc/startup.S (multiboot_trampoline): Set %dh to 0xFF.
    (codestart): Save %dh in GRUB_ROOT_DRIVE.
    (grub_root_drive): New variable.

    * kern/i386/pc/init.c (make_install_device): Use GRUB_ROOT_DRIVE
    instead of GRUB_BOOT_DRIVE to construct a device name. Set
    GRUB_ROOT_DRIVE to GRUB_BOOT_DRIVE if it is 0xFF, otherwise use it
    as it was.

    * include/grub/i386/pc/kernel.h (grub_root_drive): New prototype.

    * include/grub/i386/pc/boot.h (GRUB_BOOT_MACHINE_ROOT_DRIVE): New
    macro.
    (GRUB_BOOT_MACHINE_DRIVE_CHECK): Set to 0x4f.

    * boot/i386/pc/pxeboot.S (_start): Set %dh to 0xFF. For now, this
    is bogus, because PXE booting does not specify any drive
    correctly.

    * boot/i386/pc/lnxboot.S (reg_edx): Set the second byte to 0xFF. I
    am not sure if this is really correct.

    * boot/i386/pc/cdboot.S: Set %dh to 0xFF, because the root drive
    is always identical to the boot drive when booting from a CD.

    * boot/i386/pc/boot.S (MOV_MEM_TO_AL): Removed. Not needed any
    longer.
    (root_drive): New variable.
    (real_start): Unconditionally set %dh to ROOT_DRIVE.
    (setup_sectors): Push %dx right after popping it, because %dh will
    be modified later.
    (copy_buffer): Restore %dx.
 2008-02-03 18:56:08 +00:00
bean
70bc2ef25c 2008-01-29 Bean <bean123ch@gmail.com> 
* boot/i386/pc/lnxboot.S (data_start): Code cleanup.
        (real_code_2): Code cleanup and change comment style.
        (move_memory): Avoid using 32-bit address mode.
 2008-01-29 10:59:56 +00:00
robertmh
84be7599f6 2007-12-15 Bean <bean123ch@gmail.com> 
* conf/i386-pc.rmk (pkgdata_IMAGES): Add lnxboot.img.
	(lnxboot_img_SOURCES): New variable.
	(lnxboot_img_ASFLAGS): Likewise.
	(lnxboot_img_LDFLAGS): Likewise.

	* boot/i386/pc/lnxboot.S: New file.
 2007-12-15 10:42:17 +00:00