Hi,
I am using slave serial mode with a Spartan 3E FPGA on the PMC440 board.
Please see board/esd/pmc440/fpga.c.
I have no problem. May I ask how you created the .bit file?
You should not use a 'prom' file. prom files can have a swapped bit order.
Matthias
On Wednesday 26 March 2008 11:24, Tales Toledo wrote:
> Hi,
>
> does anybody have a CRC problem programming Xilinx Spartan3 in slave
> serial mode?
> I'm using u-boot-1.3.0 with Matthias suggested changes in bit swapping
> and always get the same error.
> The .bit is ok since it was programmed using JTAG and works fine.
> The command sequence and u-boot debug messages are below for reference.
> Any suggestion is appreciated.
>
> Thx,
> TT
>
> => tftp 100000 fpganew.bit
> Using FEC ETHERNET device
> TFTP from server 192.168.1.100; our IP address is 192.168.1.1
> Filename 'fpganew.bit'.
> Load address: 0x100000
> Loading: #########
> done
> Bytes transferred = 131034 (1ffda hex)
> => fpga loadb 0 100000 ${filesize}
> do_fpga: fpga_data = 0x100000
> do_fpga: device = 0
> design filename = "fpga_top.ncd"
> part number = "3s200tq144"
> date = "2008/ 3/25"
> time = "16:37:58"
> bytes in bitstream = 130952
> fpga_get_desc: found fpga descriptor #0 @ 0x01ffad04
> Spartan3_load: Launching Slave Serial Load
> Spartan3_ss_load: start with interface functions @ 0x01ff8c00
> Spartan3_ss_load: Function Table:
> ptr: 0x01bb6a90
> struct: 0x01ff8c00
> pgm: 0x01febf80
> init: 0x01fec000
> clk: 0x01fec0e8
> wr: 0x01fec118
> done: 0x01fec070
>
> Loading FPGA Device 0...
> fpga_pre_fn:111: FPGA pre-configuration
> fpga_pgm_fn:122: FPGA PROGRAM asserted
> fpga_init_fn:145: INIT check... low
> fpga_pgm_fn:122: FPGA PROGRAM deasserted
> fpga_init_fn:145: INIT check... high
> ........................................fpga_init_fn:145: INIT check... high
> fpga_init_fn:145: INIT check... low
> ** CRC error during FPGA load.
> bytecount=130938, bsize=130952
>
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