doc: add note on -b argument to flash-write tools

077dab43 · Tjeerd J. Pinkert · Grzegorz Daniluk · 9fc08cfa · 077dab43
Commit 077dab43 authored Nov 28, 2016 by Tjeerd J. Pinkert Committed by Grzegorz Daniluk Nov 28, 2016
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--- a/doc/wrpc.in
+++ b/doc/wrpc.in
@@ -443,6 +443,13 @@ $ sudo tools/flash-write -b 0x20 -c 0x0 0 1507712 < \
     <your_location>/sdbfs-flash.bin
 @end example

+@b{Note:} The @code{-b} parameter takes the PCI bus address of the SPEC. This
+can be found either in the list of the PCI devices installed in the system
+(@code{lspci}) or in the kernel messages (@code{dmesg}) when inserting the
+spec.ko module. See the example below on loading the FPGA code. We see that the
+second number in the colon/dotted notation provides the argument in the example
+above.
+
 @b{Note:} Please refer to @ref{Writing @sc{sdbfs} image in standalone configuration}
 for instructions on how to write the @sc{sdbfs} image to a standalone @sc{spec}
 or custom hardware.