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README.md

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 # cubolibre
 
-Cubo Libre
-
-Free software, open source hardware, secure computer.
+Cubo Libre
+
+Free software, open source hardware, secure computer.
+
+# Overview
+
+Cubo Libre is a Free Software, Open Source Hardware,
+secure computer currently under development.
+
+
+To have a secure computer, no part may be a "black box".
+All software and hardware needs to be libre, so it can
+be subject to audit and review.
+
+
+Where any component falls short of being libre, it will
+be documented and considered a critical bug.
+
+
+To have a secure system, you need to have:
+
+* Secure hardware.
+
+* Secure firmware.
+
+* Secure operating systems.
+
+* Secure applications.
+
+
+At present, nearly every computer system in the world fails
+on all four counts above.
+
+
+# Implementation
+To achieve the above goals, best-of-class Free Software and
+Open Source Hardware will be used. There is a paucity of
+hardware at present, so best-of-class least-worst-component will
+be used until a suitable replacement is found. Free Software /
+Open Source Hardware will be prioritized over all other features.
+
+
+The system will be designed to be secure from RF eavesdropping.
+
+
+* Mini cluster workstation/server system.
+
+* RISC-V Architecture for main systems.
+
+* OpenBSD and GNU/Linux based operating systems.
+
+* Strong emphasis on only libre firmware. Meticulous search for exceptions.
+
+* Application vertical targeting secure blockchain computing.
+
+
+# Hardware
+
+See the `cubolibre-bom.ods` spreadsheet for hardware details.
+
+
+## Main components
+
+* 5x+ SiFive HiFive Unmatched RISC-V motherboards.
+
+* Trellisboard FPGA PCBA.
+
+* 12U RF/EMI secure cabinet.
+
+* 2U rackmount cases.
+
+* GPDI (General-Purpose Differential Interface) digital video out.
+
+* RF/EMI secure keyboard, mouse, monitor.
+
+* USB hardware firewalls.
+
+* NVMe storage, clustered.
+
+* 10G fiber out.
+
+* Secure power in/out.
+
+* External hardware time sync (GPS).
+
+* Audio diodes for mic/speaker.
+
+* Physical lockdown.
+
+## Hardware Repositories
+
+Source file `git` repositories:
+
+* Cubo Libre Free Software, Open Source Hardware, secure computer.
+https://code.forksand.com/forksand/cubolibre
+
+
+* USB Hardware Firewall clone
+https://code.forksand.com/forksand/usb-firewall
+
+* Trellisboard
+https://code.forksand.com/forksand/fs-TrellisBoard
+
+* WASD Libre Open Source Hardware keyboard controller.
+https://code.forksand.com/forksand/wasd-libre
+
+Mirrors will be made of all upstream hardware used.
+
+
+# Software
+
+Overview of main software components. Acceptable licenses will follow
+the Free Software Foundation's (FSF) list.
+
+* https://www.gnu.org/licenses/license-list.html
+
+Mirrors will be made of all upstream software used.
+
+
+## Software Repositories
+
+Source file repositories:
+
+* https://code.forksand.com/forksand/cubolibre
+
+* https://code.forksand.com/forksand/
+
+* https://www.debian.org
+
+* https://www.openbsd.org
+
+
+# Prototype
+Status.
+
+* Bill of Materials (BOM) draft underway.
+
+* Some components ordered.
+
+* Component quoting underway.
+
+* Prototype development is using the Microchip Icicle Kit RISC-V
+ASIC and FPGA development board.
+
+* Trellisboards have been manufactured and tested. A+. Need
+component updates for supply chain.
+
+* SiFive motherboard is "expected" to ship in March (2021).
+
+* USB Hardware firewall clone manufactured.
+
+* Design of new USB hardware firewall underway in KiCAD.
+