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PXA255 - Xscale - Peripheral access question
- From: Nirmal Prasad <prasad_nirmal at yahoo dot com>
- To: ecos-discuss at sources dot redhat dot com
- Date: Sun, 2 Jan 2005 09:22:38 -0800 (PST)
- Subject: [ECOS] PXA255 - Xscale - Peripheral access question
Hello,
I am using an xscale module that has redboot on it and
I am trying to interface a peripheral at address
0x34000000 [Socket 1 reserved space]. The registers
are supposed to be in this space.
When I do a x -b 0x34000000 -l 512 it returns 0x00's.
Do I need to setup any kind of mapping for access to
the socket 0,socket 1 address space?
I have led's on pce1,pce2 lines and nothing happens to
them so it looks like cpu is not changing those lines.
I've tried with longer -l <> to see if the blink is
too short but nothing happens. I don't have a logic
analyzer so would need some way of debugging this.
Any pointers??
Thanks
Nirmal
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