rom_stream: The use of stream tags?

[Andrew Kohlsmith]

Can someone explain why the rom stream init function looks for "$TAG$" in 
memory?  It appears nowhere in a "regular" romimage (i.e. one with only an 
elfboot and the linuxbios image), other in the code that looks for the tag.

Regards,
Andrew

[steven james]

Greetings,

That sounds like the copy in the baremetal toolkit. I put it in there so
that multiple payloads can be detected and chosen at boot time. The tag
structure consists of one or more 16 byte segments starting with $TAG$ for
detection. The 1st block contains a count of additional blocks, and the
target's size, + 6 bytes for the name of the target. Additional blocks
contain the continuation of the name.

I set it up to start at offset 0 in the event that there are no tags for
backward compatability.

G'day,
sjames

On Mon, 25 Nov 2002, Andrew Kohlsmith wrote:
> Can someone explain why the rom stream init function looks for "$TAG$" in 
> memory?  It appears nowhere in a "regular" romimage (i.e. one with only an 
> elfboot and the linuxbios image), other in the code that looks for the tag.
>
> Regards,
> Andrew
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