[meta-xilinx] System.bit fpga.bin

[Edward Vidal]

Hello,
What is the difference between system.bit & fpga.bin?
Both of these have the basic devices I am assuming?

When you have system.bit that is used in BOOT.bin with the FSBL
bootimage.bif
the_ROM_image:
{
 [bootloader]/home/vidal/POKY/dora_build/poky/build/tmp/work/zedboard-poky-linux-gnueabi/u-boot-zynq/xilinx-zynq-r6/fsbl.elf
 /home/vidal/zedboard_bit_files/system.bit
 [load = 0x04000000, startup =
0x04000000]/home/vidal/POKY/dora_build/poky/build/tmp/work/zedboard-poky-linux-gnueabi/u-boot-zynq/xilinx-zynq-r6/git/u-boot.bin
}
In meta-topic you generate and fpga.bin which is using cf_adv7511_zed.
ls -la /usr/share/fpga.bin
-rw-r--r-- 1 root root 4045564 Feb  6 23:08 /usr/share/fpga.bin

I am thinking gets download with
via /dev/xdevcfg crw------- 1 root root 251, 0 Jan  1  1970 xdevcfg with
the script /etc/init.dfpga-image-load.sh
#!/bin/sh

BITFILE=/usr/share/fpga.bin

case "$1" in
  start)
    if [ ! -e /dev/xdevcfg ]; then
      mknod /dev/xdevcfg c 259 0
    fi
    if [ ! -e "${BITFILE}" ]; then
      echo "FPGA bitfile ${BITFILE} does not exist"
      exit 1
    fi
    cat "${BITFILE}" > /dev/xdevcfg
    result=`cat /sys/devices/amba.[0123]/f8007000.devcfg/prog_done`
    if [ $result -ne 1 ]; then
      echo "ERROR configuring FPGA, logic is not configured!"
      exit 1
    fi
    ;;
esac

Any an all help is appreciated.
Thanks
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