RE: [partial-reconfig] ICAP programming.

[kw@xxxxxxxxxx]

Hi there,

You should definitely consider using the read-back function of ICAP for
debugging. do multiple configuration register readback to figure out if
the last loaded bit stream is partial. by checking CRC etc. Use RS232 for
sending the data to display.

LN, I sent you an e-mail earlier, but it's been bounced back. I will just
tell you again, that you do not need to reverse (bit swap) bit stream. you
should find a way to store your partial bitstream file in your memory as
char or integer array, and load it into ICAP.

That BRAM is a buffer, so everytime you load a bitstream, you load a small
part of your bitstream into that buffer, and when the buffer is full, you
load the buffer content into ICAP, and continue with the next iteration.

I'm currently out of office, so i cann't be more specific on my code. I
suggest that you study the HWICAP library function calls in more detail
and open a bitfile with a hex editor to really understand what's really
going on.


BR
KW

> Hello LN,
>
> I don¡¯t think there's any modification needed to be done with the partial
> bitstream. See this
> http://www.itee.uq.edu.au/~listarch/partial-reconfig/archive/2005/03/msg00027.html
>
> In fact, I have problems with ICAP too. After I initialize ICAP, I get
> nothing feedback. Can you share some experience how to establish the ICAP?
> My code doesn¡¯t work. Anything wrong?
>
>    XStatus Status;
>    XHwIcap *InstancePtr;
>    Xuint32 Idcode;
>
>    xil_printf(" icap self test ");
>
>    Status = XHwIcap_Initialize(InstancePtr, XPAR_OPB_HWICAP_0_DEVICE_ID,
> XHI_READ_DEVICEID_FROM_ICAP);
>    Idcode = XHwIcap_GetConfigReg(InstancePtr, XHI_IDCODE);
>    xil_printf("IDCODE is 0x%08x \n\n\r", Idcode);
>
> Regards,
> Robin
>
> -----Original Message-----
> From: owner-partial-reconfig@xxxxxxxxxxxxxx
> [mailto:owner-partial-reconfig@xxxxxxxxxxxxxx] On Behalf Of Lakshmi
> Narasimhan. S
> Sent: ÐÇÆÚÁù, 29 Ê®ÔÂ, 2005 0:13
> To: partial-reconfig@xxxxxxxxxxxxxx
> Subject: [partial-reconfig] ICAP programming.
>
> Hello team:
> I have a few questions about using ICAP for self reconfiguration.
>
> I got a system built successfully that does partial reconfiguration,
> if I were to send the bitfiles via JTAG port.
>
> Now I would to extend this to do self-reconfiguration.
> I have put the partial bitfile onto the FLASH and able to
> read the file from the central processor. These bitfiles
> are partial bitfiles.
>
> Onboard ICAP is working, I was able to read the IDCODE from the
> ICAP successfully.
>
> Now to my questions.
>
>    I tried dumping the contents of the bitfiles directly onto the
>    ICAP. No processing, just read them from FLASH and write onto ICAP.
>    I see no difference, infact the system hangs!!!
>
> So, is there some processing that needs to be done onto the  partial
> bitstream before sending it off to ICAP?
>
> Any inputs, snippets of code or references to design which does it
> would be greatly appreciated.
>
> Thanks
> LN
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