[U-Boot-Users] STX AMC8548 board

[Orpe, Rajendra]

Hi,
  I have found two ways to do that.Thought to reply in case anybody else
needs the info.
 
  1. Program ROWAR, ROWBAR and ROWTAR registers of MPC8548 for
attributes and the address locations along with the size of the ATMU
window through U-boot. Then try to read or write into the window
locations. This will generate the outbound packets on the rapidio
interface.
  This also needs the LAWAR and LAWBAR window setting to route the
traffic to RAPIDIO interface. The code for Rapidio window setting being
the "1100"
 
  2. Other way is to program the DMA controller registers and set MR[cs]
bit to 1. This happens only if the other SAR, DAR, SATR and DATR plus
BAR registers are correctly programmed. The details can be found in the
MPC8548 family reference manual.
 
thanks,
Rajendra

________________________________

From: Orpe, Rajendra 
Sent: Thursday, November 16, 2006 12:12 PM
To: u-boot-users at lists.sourceforge.net
Subject: STX AMC8548 board


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Hi,
  Anybody here is using AMC8548 board from STx.
  I am working on the board and the problem is that I don't know how
exactly can one see the RapidIO registers of the board?
  
  I saw the mapping for RapidIO board to be at C0000 location. But that
location does not show any valid data. I used command "md c0000" for
this.

  Does ccsr location play any part in this?
  I also tried using "md e00c0000" as ccsr location is e0000000.

  Or am I missing anything.
  I also want to know how exactly can one generate the RapidIO traffic.
I want to validate RapidIO controller on FPGA connected to AMC8548.

  Please help

Thanks,
Rajendra



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