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These are associated with the ethernet boot device but do not match its
uclass name, so handle them as special cases.
Provide a way to pass flags through with the bootdev so that we know
how to process it. The flags are checked by the bootmeths, to ensure that
only the selected bootmeth is used.
While these both use the network device, they work quite differently. It
is common to run only one of these, or to run PXE before DHCP. Provide
bootflow flags to control which methods are used. Check these in the two
bootmeths so that only the chosen one is used.
Signed-off-by: Simon Glass <sjg@chromium.org>
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With EFI booting the device tree is required but is not actually specified
in any way. The normal method is to use a fdtfile environment variable to
get the filename, then look for that file on the media.
Implement this in the bootmeth.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present this bootmeth only supports reading from a filesystem. Add
support for reading from a network also, using DHCP with autoload.
Signed-off-by: Simon Glass <sjg@chromium.org>
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These functions return 0 if the check passes, so the names are somewhat
confusing. Rename them.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Add a bootmeth driver which handles EFI boot, using EFI_LOADER.
In effect, this provides the same functionality as the 'bootefi' command
and shares the same code. But the interface into it is via a bootmeth,
so it does not require any special scripts, etc.
For now this requires the 'bootefi' command be enabled. Future work may
tidy this up so that it can be used without CONFIG_CMDLINE being enabled.
There was much discussion about whether this is needed, but it seems
that it is, at least for now.
Signed-off-by: Simon Glass <sjg@chromium.org>
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