New subject: SPD binaries in coreboot

23 Oct 2015


      Aaron Durbin wrote:
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I guess JEDEC does have a structured format. Maybe it's XML or JSON. :)
I don't believe JEDEC has a format. And the one thing missing here is
that there is no standard way of distributing these files. In fact,
I've mainly seen spreadsheets as a form of distribution from the
memory manufacturers.
Nod, then we would be creating the format.
...
The issue is that spds are for dimms while soldered down dram aren't
dimms. The spds provide the illusion of an actual dimm to the memory
training code which needs specific values. And because of this those
files need to be edited at times because of errors.
Right, "accidental review" as these data sets pass by humans in the
review process is a good reason for a text-based format. Editing,
well, whether I edit a hex dump or use hexedit to edit a binary
really doesn't make a big difference - in which case I strongly
favor requiring developers who make edits to have more tooling,
over requiring new tooling at build time.
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FWIW, LPDDR has the ability to be queried on the command bus so
these constructs should go away over time.
Old boards stay in the tree.
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Fixing structure is more important IMO and shouldn't need to block on that.
What's the specific structural gripe you have? The snippet of
duplicated Makefile code?
Code and data in mainboard directories for components which are not
the mainboard.
//Peter

Re: [coreboot] SPD binaries in coreboot