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## -----------------------------------------------------------------------
##
## Copyright 2011 H. Peter Anvin - All Rights Reserved
##
## Permission is hereby granted, free of charge, to any person
## obtaining a copy of this software and associated documentation
## files (the "Software"), to deal in the Software without
## restriction, including without limitation the rights to use,
## copy, modify, merge, publish, distribute, sublicense, and/or
## sell copies of the Software, and to permit persons to whom
## the Software is furnished to do so, subject to the following
## conditions:
##
## The above copyright notice and this permission notice shall
## be included in all copies or substantial portions of the Software.
##
## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
## EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
## OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
## NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
## HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
## WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
## FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
## OTHER DEALINGS IN THE SOFTWARE.
##
## -----------------------------------------------------------------------
This is a combination of a FPGA design and a Tcl program to read and
write the flash part on a Terasic DE1/Altera Cyclone II Starter Kit
FPGA development board.
It should be fairly trivial to port to other boards using parallel
NOR flash with Altera FPGAs; porting to other vendors will require
porting to their specific JTAG solution.
Currently this only supports one file and writing from the start of
the flash; this I hope to fix in the near future:
Usage:
# First upload the FPGA design
quartus_pgm -m JTAG -p 'p;de1flash.sof'
# Second, execute either of these commands
quartus_stp -t de1flash.tcl read filename [length]
quartus_stp -t de1flash.tcl write filename [length]
quartus_stp -t de1flash.tcl eraseall
Note that it is NOT necessary to erase before writing; the utility
will automatically erase any sectors that are being written.
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