[OE-core] [PATCH] wic: isoimage-isohybrid: implement grubefi menu logic

[Ioan-Adrian Ratiu]

Hello Ed,

I've looked a little at the wic rewrites in master and they're really really awesome!

Just to verify if I understood correctly: Now if I want custom menus in grub I
can specify them directly in a custom .cfg supplied in the wks by the "configfile"
bootloader option, so there's no need anymore for that "--menu" option + all the
ugly string parsing code from my previous patch.

Is this correct?

Thank you,
Ioan

On Tue, 19 Apr 2016 13:15:36 +0300
Ed Bartosh <ed.bartosh at linux.intel.com> wrote:

> Hi Ioan-Adrian,
> 
> It's my fault as I've rewritten ks parser and missed --menu implementation.
> Let me know if you need my help with this.
> 
> It would be great if you also add test case for this feature to wic oe-selftest suite.
> 
> Regards,
> Ed
> 
> On Tue, Apr 19, 2016 at 03:17:56PM +0300, Ioan-Adrian Ratiu wrote:
> > Hello Ed,
> > 
> > I've tested it on Jethro. Sorry about this. I'll look at the changes in wic's kickstart and redo/resubmit.
> > 
> > Thank you,
> > Ioan
> > 
> > On Mon, 18 Apr 2016 16:24:11 +0300
> > Ed Bartosh <ed.bartosh at linux.intel.com> wrote:
> >   
> > > Hi Ioan-Adrian,
> > > 
> > > Did you test if this patch works on master?
> > > From the first look I'd say it will not work as --menu bootloader
> > > option is not implemented there.
> > > 
> > > On Mon, Apr 18, 2016 at 03:46:22PM +0300, Ioan-Adrian Ratiu wrote:  
> > > > Right now isoimage-isohybrid creates a single boot menu entry "boot"
> > > > and passes it the arguments supplied with "--append". There is logic
> > > > for creating custom grub menus, but it is sadly not used. "boot" is
> > > > hardcoded.
> > > > 
> > > > This change makes isoimage use the wic bootloader "--menu" argument to
> > > > create its menus. The syntax used for menu specification was chosen so
> > > > it does not conflict with the kernel parameter syntax (you can pass
> > > > custom kernel arguments from the generated grub menu entries, like for
> > > > example silent booting, thread affinity etc.).
> > > > 
> > > > The "--menu" argument syntax is as following. The argument supplies a
> > > > collection of menu entry names and kernel parameters. Menu name entries
> > > > can contain any ASCII character except | or : which are separators.
> > > > Kernel parameters obey the syntax defined by the kernel documentation.
> > > > | is the menu separator and : is the separator between the menu names
> > > > and parameters.
> > > > 
> > > > Example for use in wks files:
> > > >   --menu "Menu Name:firstarg,secondard|Menu Name 2:anotherarg,otherarg"
> > > > 
> > > > Signed-off-by: Ioan-Adrian Ratiu <adrian.ratiu at ni.com>
> > > > ---
> > > >  .../lib/wic/plugins/source/isoimage-isohybrid.py   | 35 ++++++++++++++++------
> > > >  1 file changed, 26 insertions(+), 9 deletions(-)
> > > > 
> > > > diff --git a/scripts/lib/wic/plugins/source/isoimage-isohybrid.py b/scripts/lib/wic/plugins/source/isoimage-isohybrid.py
> > > > index bc99283..4b0b035 100644
> > > > --- a/scripts/lib/wic/plugins/source/isoimage-isohybrid.py
> > > > +++ b/scripts/lib/wic/plugins/source/isoimage-isohybrid.py
> > > > @@ -101,23 +101,40 @@ class IsoImagePlugin(SourcePlugin):
> > > >              splashline = ""
> > > >  
> > > >          bootloader = creator.ks.bootloader
> > > > +        kernel = "/bzImage"
> > > > +        default_options = bootloader.append
> > > > +        default_menu_to_boot = "Default boot"
> > > > +        grub_menus = ""
> > > > +
> > > > +        # menu separators are '|', custom boot args separated by ':', ex.
> > > > +        # --menu "Menu Name:firstarg,secondard|Menu Name 2:anotherarg,otherarg"
> > > > +        for menu in bootloader.menus.split('|'):
> > > > +            menu_list = menu.split(":")
> > > > +            menu_name = menu_list[0]
> > > > +            grub_menu_options = ""
> > > > +
> > > > +            if (len(menu_list) > 1):
> > > > +                menu_params = menu_list[1]
> > > > +                for param in menu_params.split(','):
> > > > +                    if param.lower() == "default":
> > > > +                        default_menu_to_boot = menu_name
> > > > +                    else: grub_menu_options += " " + param
> > > > +
> > > > +            grub_menus += "menuentry '%s' {\n" % menu_name
> > > > +            grub_menus += "linux %s rootwait %s %s\n" % \
> > > > +                (kernel, default_options, grub_menu_options)
> > > > +            grub_menus += "initrd /initrd \n"
> > > > +            grub_menus += "}\n"
> > > >  
> > > >          grubefi_conf = ""
> > > >          grubefi_conf += "serial --unit=0 --speed=115200 --word=8 "
> > > >          grubefi_conf += "--parity=no --stop=1\n"
> > > > -        grubefi_conf += "default=boot\n"
> > > > +        grubefi_conf += "default=%s\n" % default_menu_to_boot
> > > >          grubefi_conf += "timeout=%s\n" % (bootloader.timeout or 10)
> > > >          grubefi_conf += "\n"
> > > >          grubefi_conf += "search --set=root --label %s " % part.label
> > > >          grubefi_conf += "\n"
> > > > -        grubefi_conf += "menuentry 'boot'{\n"
> > > > -
> > > > -        kernel = "/bzImage"
> > > > -
> > > > -        grubefi_conf += "linux %s rootwait %s\n" \
> > > > -            % (kernel, bootloader.append)
> > > > -        grubefi_conf += "initrd /initrd \n"
> > > > -        grubefi_conf += "}\n"
> > > > +        grubefi_conf += grub_menus
> > > >  
> > > >          if splashline:
> > > >              grubefi_conf += "%s\n" % splashline    
> > > 
> > > --
> > > Regards,
> > > Ed  
> >   
>