No description
9be6b98b6f
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.
|
||
|---|---|---|
| boot/i386/pc | ||
| bus | ||
| commands | ||
| conf | ||
| disk | ||
| font | ||
| fs | ||
| hello | ||
| include | ||
| io | ||
| kern | ||
| loader | ||
| normal | ||
| partmap | ||
| term | ||
| util | ||
| video | ||
| .cvsignore | ||
| aclocal.m4 | ||
| AUTHORS | ||
| autogen.sh | ||
| ChangeLog | ||
| config.guess | ||
| config.h.in | ||
| config.sub | ||
| configure | ||
| configure.ac | ||
| COPYING | ||
| DISTLIST | ||
| gencmdlist.sh | ||
| gendistlist.sh | ||
| genfslist.sh | ||
| geninit.sh | ||
| geninitheader.sh | ||
| genkernsyms.sh.in | ||
| genmk.rb | ||
| genmoddep.awk | ||
| genmodsrc.sh | ||
| gensymlist.sh.in | ||
| INSTALL | ||
| install-sh | ||
| Makefile.in | ||
| mkinstalldirs | ||
| NEWS | ||
| README | ||
| stamp-h.in | ||
| THANKS | ||
| TODO | ||
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. For now, there is not much documentation yet. Please look at the GRUB Wiki <http://grub.enbug.org> for testing procedures.