I am working hard at building coreboot with grub2 payload. Now I
can build a grub2 payload as follow:
1: Download the lastest grub2 source code.
2: ./autogen.sh
./configure --with-platform=coreboot
make
3: Use grub-mkimage to generate a "payload.elf", detail:
./grub-mkimage -d . -O i386-coreboot -o
../coreboot-v4/payload.elf --prefix='/boot/grub2'
memdisk cpio -m ../memdisk.tar
Accoding the coreboot website(http://www.coreboot.org/Talk:GRUB2),
memdisk is a virtual disk
in grub image and it is suggested that grub.cfg is contained in
a memdisk image. So I made
folders boot/grub2 in my work folder and add a new grub.cfg and
some modules(such as
memdisk.mod cpio.mod ...) into the boot/grub2, then tar
boot/grub2 to memdisk.tar(according
to the website tar can be used to build a memdisk image).
Problems:
1: I don't know wether grub2 can found my grub.cfg ,if I set "
--prefix='/boot/grub2' " ?
On the coreboot website,a sample is --prefix='(ata0)/boot/grub2'.
I think the ata0 is hard disk.
but I use the memdisk image, what should I do ?
2: I want my grub.cfg in memdisk to load the grub.cfg from my
hard disk. Because I have install the
ubuntu11.04 on my hard disk, a grub.cfg file should be in
the /boot/grub. So my grub.cfg just like
this:
search -f -s /boot/grub/grub.cfg
configfile /boot/grub/grub.cfg
Is this practicable?
3: I want the gurb can boot into the grub-shell, how to ?
BRs,
Rock.C