[U-Boot-Users] Question on PCI runtime add-ons to Open Firmware blob

[L.Campora at Sirti.it]

Hi,
I'm quite new to Open firmware, and I apologize if my question sound silly 
or has been already answered.

My system is PowerPC-based (8641D) and has a 2-level PCI tree with a 
PCI-express switch in the middle, thus
with many subordinate busses.
Being it an embedded system, I was trying to write the complete DTS for 
describing the structure for Linux to boot
without having to patch the platform code.

Before doing so, I was asking myself whether u-boot offers a runtime 
mechanism for filling the blob with the complete snapshot
of the PCI bus structure as discovered by u-boot code before passing 
control to Linux.
(at the moment I tftp a pre-compiled blob that I'm trying to adapt 
starting from the MPC8641HPCN one, which in fact has no PCI-2-PCI
bridges in the middle).

Thanks in advance!

regards,

luigi

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Luigi Campora
Sirti S.p.A.
TR-SS  - R&D Sistemi di Segnalamento
Via Bombrini, 11/4
16149 Genova
tel:  +39 010 65948 36
fax:  +39 010 65948 22
cell: +39 335 7470015
Web: www.sirti.it
email: L.Campora at sirti.it
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