grub2 EFI boot loader internal/external booting

[bean123]

Still have to check your suggestions above.

-------------

grub32 (#405 above) tried on MacBook21 (intel945 video).
Not good here.

I can boot into desktop gui, no xorg fbdev, with or without loadbios bios.bin (checked and has data).
getting simlar results either way, but logs differ in detail (attached).

(Using - linux /vmlinuz root=/dev/da3 )

I don't understand, you can boot into desktop, no fbdev, then what's wrong ?

The log file seems all right, without loadbios, it shows "Bad VBT signature", which is expected.

grub32 - I now get the "Can't find frame buffer address".
for
linux /vmlinuz root=/dev/da3 video=efifb
and using fbdev, and blacklist, expecting console video
Something broke?

Previous version 2021 has no problems with video=efifb and xorg fbdev to give console video and gui on fbdev.

The new version go back to use pci to detect fb, but the method should be more successful than before, perhaps you can use refit shell to check the pci information.

[bean123]

Hi pxwpxw,

Please try this one. Use video=efifb or video=vesafb option, it will print extra information on screen.

[pxwpxw]

I don't understand, you can boot into desktop, no fbdev, then what's wrong ?

Just noting that the MacBook21 does not need bios.bin to get the desktop graphics.

The new version go back to use pci to detect fb, but the method should be more successful than before, perhaps you can use refit shell to check the pci information.

Coming up.

[pxwpxw]

Hi pxwpxw,

Please try this one. Use video=efifb or video=vesafb option, it will print extra information on screen.

Pictures attached, also from the efi shell pci for MBP41, IMAC81 and MB21, hope you can read them.
MBP41 = C: 1:0,0 B:0xd0000004
IMAC81 = C: 1:0,0 B:0xd0520004

All suffering from the 'Can't find frame buffer address' when asked to use video=efifb

[bean123]

Pictures attached, also from the efi shell pci for MBP41, IMAC81 and MB21, hope you can read them.
MBP41 = C: 1:0,0 B:0xd0000004
IMAC81 = C: 1:0,0 B:0xd0520004

All suffering from the 'Can't find frame buffer address' when asked to use video=efifb

oh, I found a small bug, try this one.

[pxwpxw]

oh, I found a small bug, try this one.

grub64.efi on MBP41 video=efifb

C: 1:0,0 B:0xc000000c

Can't find frame buffer addres.

Trying grub32 on MB21 now

EDIT:

grub32.efi (415) on MacBook21 using video=efifb
Can't find frame buffer address

No C:... and B:... on that one.

[pushken]

Dear all,

I'm trying to run Xen Dom0 kernel on my Xserve.

As I see I need Grub's entry like this

menuentry "Xen 3.3 unstable -i386
{ search --set /boot/xen-3.3.gz
multiboot /boot/xen-3.3.gz
module /boot/vmlinuz-2.6.29-rc8-tip root=LABEL=/ ro console=tty0
module /boot/initrd-2.6.29-rc8-tip.img
}

I just downloaded from svn latest grub2 and tried to build it.
Checked out revision 2032.

# cd grub2
# ./configure --with-platform=efi --target=i386
# make
# ./grub-mkimage -d . -o grub.efi apple appleldr boot cat chain configfile cpio date ext2 echo fat gpt help hexdump hfs hfsplus iso9660 linux ls normal pc reboot reiserfs scsi search sleep xfs multiboot module


I got error message
# grub-mkimage: error: cannot stat ./multiboot.mod

Help me. Tell me please how to enable multiboot module support in grub2?

Thank you in advance.

[pxwpxw]

Dear all,

I'm trying to run Xen Dom0 kernel on my Xserve.

As I see I need Grub's entry like this

menuentry "Xen 3.3 unstable -i386
{ search --set /boot/xen-3.3.gz
multiboot /boot/xen-3.3.gz
module /boot/vmlinuz-2.6.29-rc8-tip root=LABEL=/ ro console=tty0
module /boot/initrd-2.6.29-rc8-tip.img
}

I just downloaded from svn latest grub2 and tried to build it.
Checked out revision 2032.

# cd grub2
# ./configure --with-platform=efi --target=i386
# make
# ./grub-mkimage -d . -o grub.efi apple appleldr boot cat chain configfile cpio date ext2 echo fat gpt help hexdump hfs hfsplus iso9660 linux ls normal pc reboot reiserfs scsi search sleep xfs multiboot module


I got error message
# grub-mkimage: error: cannot stat ./multiboot.mod

Help me. Tell me please how to enable multiboot module support in grub2?

Thank you in advance.

Assuming you have to have grub.efi to boot on the Xserve.

I dont know if it is possible to compile multiboot module for platform=efi.
We have only been using gnu/linux debian/ubuntu kernels here.

You might get a quicker answer on the grub-dev list,

[bean123]

grub64.efi on MBP41 video=efifb

C: 1:0,0 B:0xc000000c

Can't find frame buffer addres.

Trying grub32 on MB21 now

EDIT:

grub32.efi (415) on MacBook21 using video=efifb
Can't find frame buffer address

No C:... and B:... on that one.

Please try this one.

[bean123]

Dear all,

I'm trying to run Xen Dom0 kernel on my Xserve.

As I see I need Grub's entry like this

menuentry "Xen 3.3 unstable -i386
{ search --set /boot/xen-3.3.gz
multiboot /boot/xen-3.3.gz
module /boot/vmlinuz-2.6.29-rc8-tip root=LABEL=/ ro console=tty0
module /boot/initrd-2.6.29-rc8-tip.img
}

I just downloaded from svn latest grub2 and tried to build it.
Checked out revision 2032.

# cd grub2
# ./configure --with-platform=efi --target=i386
# make
# ./grub-mkimage -d . -o grub.efi apple appleldr boot cat chain configfile cpio date ext2 echo fat gpt help hexdump hfs hfsplus iso9660 linux ls normal pc reboot reiserfs scsi search sleep xfs multiboot module


I got error message
# grub-mkimage: error: cannot stat ./multiboot.mod

Help me. Tell me please how to enable multiboot module support in grub2?

Thank you in advance.

Currently, multiboot loader is not supported for efi platform, but it shouldn't be too difficult to add one, although whether it'd work for xen is another matter.