mirror of https://github.com/YosysHQ/icestorm.git
9abf7d8468
icenvcm will write a bitstream into an iCE40 device with one-time-programmable non-volatile configuration memory (NVCM) and optionally set the security lock bits to prevent read out. This is a dangerous operation and can result in bricked devices. Since it is OTP, you must be sure that your design is good enough to permanently burn into the chip. It is still possible to use the iceprog -S to reconfigure the SRAM, although the FPGA will no longer boot from an attached SPI flash. Note that the NVCM requires a 2.5V power supply, which the Lattice devboard (and many other third party boards) do not include. A schematic is included for a ZIF programming jig to burn the chips before they are soldered to their final boards. Signed-off-by: Trammell Hudson <hudson@trmm.net> Co-authored-by: Matt Mets <matt@blinkinlabs.com> Co-authored-by: Peter Lawrence <12226419+majbthrd@users.noreply.github.com> |
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| docs | ||
| examples | ||
| icebox | ||
| icebram | ||
| icecompr | ||
| icefuzz | ||
| icemulti | ||
| icenvcm | ||
| icepack | ||
| icepll | ||
| iceprog | ||
| icetime | ||
| .gitignore | ||
| COPYING | ||
| CodeOfConduct | ||
| Makefile | ||
| README | ||
| config.mk | ||
README
Project IceStorm aims at documenting the bitstream format of Lattice iCE40 FPGAs and providing simple tools for analyzing and creating bitstream files. See http://www.clifford.at/icestorm/ for more information. Most of Project IceStorm is licensed under the ISC license: # Permission to use, copy, modify, and/or distribute this software for any # purpose with or without fee is hereby granted, provided that the above # copyright notice and this permission notice appear in all copies. # # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.