CheriBSD extends FreeBSD/BERI to implement memory protection and software compartmentalization features supported by the CHERI ISA. FreeBSD/BERI is a port of the open-source FreeBSD operating system that extends support for the Bluespec Extensible RISC implementation (BERI). To build and run CheriBSD we recommend using the cheribuild script.
The CheriBSD web page can be found here: http://www.cl.cam.ac.uk/research/security/ctsrd/cheri/cheribsd.html
The Qemu-CHERI web page may also be useful: http://www.cl.cam.ac.uk/research/security/ctsrd/cheri/cheri-qemu.html
More information about BERI and CHERI can be found on http://beri-cpu.org, http://cheri-cpu.org, in the following Technical Reports:
Capability Hardware Enhanced RISC Instructions: CHERI Instruction-Set Architecture https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-927.pdf
Capability Hardware Enhanced RISC Instructions: CHERI Programmer's Guide (outdated, new version coming soon) http://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-877.pdf
Bluespec Extensible RISC Implementation: BERI Hardware reference http://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-868.pdf
Bluespec Extensible RISC Implementation: BERI Software reference http://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-869.pdf
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The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7), config(8), https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html, and https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information, including setting make(1) variables.
bin System/user commands.
cddl Various commands and libraries under the Common Development
and Distribution License.
contrib Packages contributed by 3rd parties.
crypto Cryptography stuff (see crypto/README).
etc Template files for /etc.
gnu Various commands and libraries under the GNU Public License.
Please see gnu/COPYING* for more information.
include System include files.
kerberos5 Kerberos5 (Heimdal) package.
lib System libraries.
libexec System daemons.
release Release building Makefile & associated tools.
rescue Build system for statically linked /rescue utilities.
sbin System commands.
secure Cryptographic libraries and commands.
share Shared resources.
stand Boot loader sources.
sys Kernel sources.
sys/<arch>/conf Kernel configuration files. GENERIC is the configuration
used in release builds. NOTES contains documentation of
all possible entries.
tests Regression tests which can be run by Kyua. See tests/README
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tools Utilities for regression testing and miscellaneous tasks.
usr.bin User commands.
usr.sbin System administration commands.
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https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/current-stable.html