Hi Stefan,
1. I used the 0x1c0002000 offset because I was referring to the first reply
that I received. Now, I used the address 0x1c0002000 and tried to read from it.
I retrieved 0x0f01c087. May I know what does this mean? How does this data
relate to Board ID?
2. Referring back to "Embedded Planet 440xC" document, I tried to activate the
USER_LED0/USER_LED1 (with new address 0x1c0000000 + 0x2 offset) by setting it
to 0. But didn't see the led turned on. Did some experiments and tried
0x1c0000000 without offset, sent 0, and found that USER_LED0 (CR3) and
USER_LED1 (CR4) are activated! This got me confused. May I know why is this so?
Could you please refer me to some documents?
Thanks for all the assistance.
Regards,
dell
Stefan Roese <[EMAIL PROTECTED]> wrote: On Thursday 29 November 2007, Dell
Query wrote:
> I see. No wonder I couldn't get more information on BCSR. I should contact
> sequoia to get the proper details like the correct addresses.
>
> I already used ioremap64(), remapping 0x1c0002000. I got a hex value for
> the Board ID but could figure out what it means. So I tried the
> USER_LED0/USER_LED1 (base address+0x2), to see if I could turn on/off the
> user LEDS, but still no luck. I think I am accessing the wrong addresses so
> I need to verify it with them.
Why do think you need the offset 0x2000? I just tested on my Sequoia under
U-Boot and "see" the CPLD at address 0xc000.0000:
=> md.b c0000000 20
c0000000: 0f 00 c0 07 00 80 00 80 00 20 00 00 00 00 00 00 ......... ......
c0000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
So you should map not 0x1.c000.2000 but 0x1.c000.0000 under Linux. Please let
me know if this works.
Best regards,
Stefan
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