Re: [coreboot] How to give control to bootable USB

[Zoran Stojsavljevic]

Hello Dhanasekar,

This, I guess, is not (entirely) correct:

menuentry "ONIE: Embed ONIE" --class gnu-linux --class onie {
  echo    "ONIE: Embedding ONIE ..."
  onie_entry_start
  *linux   /vmlinuz* $ONIE_CMDLINE_LINUX boot_reason=embed
install_url=file:///lib/onie/onie-updater
 * initrd  /initrd.xz*
  onie_entry_end

You should have something similar to the following:

menuentry "ONIE: Embed ONIE" --class gnu-linux --class onie {
  echo    "ONIE: Embedding ONIE ..."
  onie_entry_start
  set root='hdX,msdosY' ## hdX is your USB stick, Y partition, U R booting
from, U should find going to GRUB2 monitor (with > prompt)
  set isofile=/<dir path>/ONIE-live-XYZ.iso ## or whatever your ONIE...
.iso image is named
  loopback loop $isofile
  *linux  (loop)/live/vmlinuz* $ONIE_CMDLINE_LINUX boot_reason=embed
install_url=file:///lib/onie/onie-updater
  *initrd (loop)/live/initrd.xz*
  onie_entry_end

Please, investigate a bit more using google.com! And let us know if you did
solve the problem (post the final grub2 menyentry which works for you).

Hope this helps to the whole community. ;-)

Zoran

On Thu, Jun 15, 2017 at 2:33 PM, Dhanasekar Jaganathan <
[e-mail]> wrote:
> Hi Nico,
>
> Sorry, It is typo. I have tried with *configfile
> (usb0)/boot/grub/grub.cfg* only..
>
> with a new *boot/grub/grub.cfg*, I am getting following error,
>
> *error: file '/vmlinuz' not found.*
>
> *error: you need to load the kernel first. *
>
> FYR, I have attached  /boot/grub/grub.cfg(which is present in USB).
>
> Thanks,
> Dhanasekar
>
> On Thu, Jun 15, 2017 at 4:59 PM, Nico Huber  wrote:
> > On 15.06.2017 07:31, Dhanasekar Jaganathan wrote:
> > > Hi Nico/Taiidan,
> > >
> > > After entering "*syslinux_configfile (*", when I press *TAB, I* I am not
> > > seeing anything (nothing is coming)..
> > >
> > > So, I have tried this command *"syslinux_configfile
> > > (usb0)/boot/grub/grub.cfg" *and got the error (Kernel without label).
> >
> > Read what Taiidan wrote carefully:
> > > > > > also configfile (ahci0,msdos1)/grub2/grub.cfg to load a grub cfg
> >
> > For a grub.cfg, it's a plain *configfile* (not syslinux_configfile).
> >
> > Nico
> > > My USB ONIE installers has following files,
> > >
> > > */initrd.xz*
> > >
> > > */vmlinuz*
> > >
> > > */boot/boot.cat http://boot.cat*
> > >
> > > */boot/eltorito.img*
> > >
> > > */boot/grub/gurb.cfg*
> > >
> > > */boot/i386-PC/ *.mod (Lot of .mod files)*
> > >
> > > Thanks,
> > > Dhanasekar
> > >
> > > On Thu, Jun 15, 2017 at 5:01 AM, Nico Huber  wrote:
> > > > Hi Dhanasekar,
> > > >
> > > > On 14.06.2017 11:21, Dhanasekar Jaganathan wrote:
> > > > > Hi Taiidan,
> > > > >
> > > > > My USB ONIE installers don't have "isolinux/syslinux.cfg". It has
> > > > > "boot/grub/grub.cfg".
> > > > >
> > > > > When I try to run "syslinux_configfile (usb0)/boot/grub/grub.cfg" in
> >
> > GRUB
> > > > > command line, I am getting "*kernel without label*" error.
> > > > >
> > > > > Please provide your commands
> > > >
> > > > Taiidan already told you the correct command name (33 lines below). You
> > > > might have missed it ;)
> > > >
> > > > Nico
> > > > > Thanks,
> > > > > Dhanasekar
> > > > >
> > > > > On Wed, Jun 14, 2017 at 3:22 AM, [e-mail]
> > > >
> > > > wrote:
> > > > > > On 06/13/2017 10:22 AM, Dhanasekar Jaganathan wrote:
> > > > > >
> > > > > > Hi All,
> > > > > > >
> > > > > > > I am trying to install ONIE from USB which has ONIE installer.
> > > >
> > > > Actually, I
> > > > > > > am using GRUB2 as a payload.  If Coreboot display list of bootable
> > > > > > > device,I
> > > > > > > can select USB which will install a OS in the hard disk.  As I
> > > >
> > > > understood
> > > > > > > that Coreboot won't display list of available bootable device (not
> >
> > like
> > > > > > > vendor bios).I don't know how to give control to bootable USB or
> >
> > boot a
> > > > > > > bootable USB by coreboot. Can you please help me on this?.
> > > > > > >
> > > > > > >
> > > > > > > Thanks,
> > > > > > > Dhanasekar
> > > > > > >
> > > > > > Assuming you are booting a standard linux distro iso:
> > > > > > syslinux_configfile (*TAB* to see what is available
> > > > > >
> > > > > > then simply for instance syslinux_configfile (usb0,msdos1)/isolinux/
> > > >
> > > > syslinux.cfg
> > > > > > (or w/e)
> > > > > >
> > > > > > also configfile (ahci0,msdos1)/grub2/grub.cfg to load a grub cfg
> > > > > >
> > > > > > Ideally you would add a grub cfg to the coreboot image that does
> > > >
> > > > something
> > > > > > like load a config file from a specified local disk so that it is
> >
> > easy
> > > > to
> > > > > > update (ie: no re-flashing) instructions for that are on the wiki.
> > > > > >
> > > > > > SeaBIOS would provide the classic AMI style F12 selection menu, but I
> > > > > > don't like it due to how many times I have accidentally enabled
> >
> > option
> > > > rom
> > > > > > execution by forgetting to include the configuration file.