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Follow along the way the linux builtin does it.
Signed-off-by: Brett Grandbois <brett.grandbois@opengear.com>
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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When the BLS support was added, the conclusion was that default indexes
didn't apply for BLS snippets. But for GRUB 2 the indexes refers to the
boot menu entries in memory, regardless of how these were generated.
Since in GRUB 2 is valid to set a default index even for menu entries
generated from BLS fragments, allow this to also be done in Petitboot.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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Instead of adding a boot option explicitly, just add it to the grub script
boot option list and increment the number of options. That way BLS entries
will be known by the grub script handler and can check if is a valid index.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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The BLS entries were sorted so that the latest entry was at the top in the
Petitboot UI, since it matches how menu entries are sorted in GRUB2 config
and the GRUB2 UI.
But in the Petitboot's UI, the latest entry is expected to be at the bottom
and the older one at the top. Sort the BLS entries to match what's expected.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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The default path to search for BootLoaderSpec configuration files is
/loader/entries but in some setups a different directory may be used.
So allow this to be chosen by using a blsdir GRUB environment variable.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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The BootLoaderSpec (BLS) defines a file format for boot configurations,
so bootloaders can parse these files and create their boot menu entries
by using the information provided by them [0].
This allow to configure the boot items as drop-in files in a directory
instead of having to parse and modify a bootloader configuration file.
The GRUB 2 bootloader provides a blscfg command that parses these files
and creates menu entries using this information. Add support for it.
[0]: https://www.freedesktop.org/wiki/Specifications/BootLoaderSpec/
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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