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* base-files: add a hint in sysupgrade that shows what to do when the image ↵Felix Fietkau2016-12-041-0/+3
| | | | | | metadata check fails Signed-off-by: Felix Fietkau <nbd@nbd.name>
* base-files: validate metadata of sysupgrade imagesFelix Fietkau2016-11-191-0/+40
Use fwtool to extract it, only require metadata to be present if the platform sysupgrade script sets REQUIRE_IMAGE_METADATA=1 Image metadata is in JSON format and contains a list of supported devices, along with version information that could be displayed by a UI later before the actual upgrade happens. Signed-off-by: Felix Fietkau <nbd@nbd.name>