[LEDE-DEV] [RFC] sysupgrade image format

[Alexander Couzens]

Hi,

I'm posting the results of a small group who talked about the
sysupgrade image format at the battlemesh in Porto.

sysupgrade
##########
 * don't limit our format by vendor image limitations
 * should contain meta information
 * meta data like compatible boards, lede version, ..
 * meta data gets appended as Trailer to be compatible
 * trailer got automatic removed by jffs2 format on first-boot
 * meta data is a tar ball (compressed)

sysupgrade.img := image + meta + trailer

Trailer
#######
 * 8 byte version field (of the trailer) + additional unknown
   informations
 * 4 byte length of the metadata
 * x byte crypto signature
-- 
Alexander Couzens

mail: lynxis at fe80.eu
jabber: lynxis at fe80.eu
mobile: +4915123277221
gpg: 390D CF78 8BF9 AA50 4F8F  F1E2 C29E 9DA6 A0DF 8604
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