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Warner Losh 52379d36a9 Create helper functions for parsing boot args.
boot_parse_arg		to parse a single arg
boot_parse_cmdline	to parse a command line string
boot_parse_args		to parse all the args in a vector
boot_howto_to_env	Convert howto bits to env vars
boot_env_to_howto	Return howto mask mased on what's set in the environment.

All these routines return an int that's the bitmask of the args
translated to RB_* flags. As a special case, the 'S' flag sets the
comconsole_speed env var. Any arg that looks like a=b will set the env
key 'a' to value 'b'. If =b is omitted, 'a' is set to '1'.  This
should help us reduce the number of redundant copies of these routines
in the tree.  It should also give a more uniform experience between
platforms.

Also, invent a new flag RB_PROBE that's set when 'P' is parsed.  On
x86 + BIOS, this means 'probe for the keyboard, and if it's not there
set both RB_MULTIPLE and RB_SERIAL (which means show the output on
both video and serial consoles, but make serial primary).  Others it
may be some similar concept of probing, but it's loader dependent
what, exactly, it means.

These routines are suitable for /boot/loader and/or the kernel,
though they may not be suitable for the tightly hand-rolled-for-space
environments like boot2.

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D16205
2018-07-13 16:43:05 +00:00
bin Stop building intermediate .o files. 2018-06-27 21:36:49 +00:00
cddl The IP, TCP, and UDP provider report IP addresses as strings. 2018-06-18 18:35:29 +00:00
contrib Pull in r336008 from upstream clang trunk: 2018-07-12 19:02:59 +00:00
crypto Merge upstream patch to unbreak tunnel forwarding. 2018-05-16 14:04:39 +00:00
etc Create an aarch64 subdir under man4, now that we have aarch64 manpages. 2018-07-08 01:29:48 +00:00
gnu Teach binutils that arm64 is a 64bit architecture. This is needed to cross 2018-07-06 11:50:59 +00:00
include Add a missed chunk r335939. 2018-07-08 15:48:47 +00:00
kerberos5 Remove redundant space. 2018-07-10 00:26:13 +00:00
lib Fix an obvious 'is odd' check. 2018-07-12 16:19:17 +00:00
libexec This exposes ZFS user and group quotas via the normal 2018-07-05 22:56:13 +00:00
release Simplify using bsd.endian.mk and have it provide CAP_MKDB_ENDIAN, since it is 2018-06-28 13:48:59 +00:00
rescue Avoid referencing private lib names directly. 2017-11-10 07:53:02 +00:00
sbin Detect and handle invalid number of FATs 2018-07-13 02:02:16 +00:00
secure Upgrade to OpenSSH 7.7p1. 2018-05-11 13:22:43 +00:00
share Actually build and install the spigen.4 manpage. 2018-07-11 23:59:04 +00:00
stand Create helper functions for parsing boot args. 2018-07-13 16:43:05 +00:00
sys Create helper functions for parsing boot args. 2018-07-13 16:43:05 +00:00
targets Normalize the g(eom,cache,part,...) build. 2018-06-25 19:55:15 +00:00
tests Export a breakpoint() function to userland for arm and arm64. 2018-07-06 23:49:17 +00:00
tools Make generated scripts executable. 2018-07-13 16:37:42 +00:00
usr.bin Remove bits of the old NUMA. 2018-07-10 22:00:20 +00:00
usr.sbin kern_environment: Give the static environment a chance to disable MD env 2018-07-12 02:51:50 +00:00
.arcconfig callsign isn't required anymore 2016-09-29 06:19:45 +00:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.gitattributes .git*: add gitattributes and gitignore 2017-12-25 21:07:54 +00:00
.gitignore Ignore _.universe-toolchain file. 2018-07-01 13:50:37 +00:00
COPYRIGHT Remove 'All Rights Reserved' from the collection copyright and templates. 2018-05-09 02:02:49 +00:00
LOCKS LOCKS: update current locks 2018-06-09 03:08:04 +00:00
MAINTAINERS Pass on bhyve kernel module maintenance to 2018-06-10 04:25:19 +00:00
Makefile tinderbox: If the clang lookup fails fallback to the old default behavior. 2018-06-28 18:22:20 +00:00
Makefile.inc1 Fix parsing of create-kernel-packages 2018-07-10 21:20:49 +00:00
Makefile.libcompat Don't change directory owner to root when building with -DNO_ROOT 2018-06-29 21:15:26 +00:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc Remove bits of the old NUMA. 2018-07-10 22:00:20 +00:00
README README: add generic notes about GENERIC and NOTES 2018-06-17 19:44:24 +00:00
README.md README: add generic notes about GENERIC and NOTES 2018-06-17 19:44:24 +00:00
UPDATING kern_environment: Give the static environment a chance to disable MD env 2018-07-12 02:51:50 +00:00

FreeBSD Source:

This is the top level of the FreeBSD source directory. This file was last revised on: FreeBSD

FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.

For copyright information, please see the file COPYRIGHT in this directory. Additional copyright information also exists for some sources in this tree - please see the specific source directories for more information.

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.

Source Roadmap:

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
		for additional information.

tools		Utilities for regression testing and miscellaneous tasks.

usr.bin		User commands.

usr.sbin	System administration commands.

For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see:

https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/current-stable.html