little endian page mapping on PQ3
Hi all,
Looking at PQ3 documentation, it looks like there is a way to select on a page basis if we would like to map one particular page in BIG or LITTLE endian.
This is a very nice feature when you need to exchange some data between a PC and a PQ3 target.
I am wondering if someone have already tryed this PQ3 feature ? I guess this would require some kind of hook in the kernel ...
Any clue ?
Thanks - Jose
Hi, Jose!
Quoted 7 lines · Jose Almeida
Hi all,
Looking at PQ3 documentation, it looks like there is a way to select on a page basis if we would like to map one particular page in BIG or LITTLE endian.
This is a very nice feature when you need to exchange some data between a PC and a PQ3 target.
I would be interested, however cannot spend time right now to work on that subject.
Quoted 2 lines
I am wondering if someone have already tryed this PQ3 feature ? I guess this would require some kind of hook in the kernel ...
Just some random bits I found in the web:
http://developer.apple.com/documentation/Hardware/DeviceManagers/pci_srvcs/pci_cards_drivers/PCI_BOOK.250.html
The Interesting part is:
"Thus, the address swizzle is completely transparent to software."
So, I would just try to setup some memory mapping and turn on little endian mode to access that area... MMMV. Just a guess.
Regards,
Signature · 10 lines
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