4b91bf7948
of the boot0.S code, with a number of compile-time selectable options, the most interesting one being the ability to select PXE booting. The code is completely compatible with the previous one, and with the boot0cfg program. Even the actual code is largely unmodified, with only minor rearrangements or fixes to make room for the new features. The behaviour of the standard build differs from the previous version in the following, minor things: + 'noupdate' is the default, which means the code does not write back the selection to disk. You can enable the feature at runtime with boot0cfg, or changing the flags in the Makefile. + a drive number of 0x00 (floppy, or USB in floppy emulation) is now accepted as valid. Previously, it was overridden with 0x80, meaning that the partition table coming from the media was used to access sectors on a possibly different media. You can revert to the previous mode building with -DCHECK_DRIVE, and you can always use the 'setdrv' option in boot0cfg + certain FAT or NTFS partitions are listed as WIN instead of DOS. + the 'bel' character on a bad selection is replaced by a '#' to make it clear that the system is not hang even if the machine does not have a speaker. This can be reverted back at compile time, or at runtime with an upcoming boot0cfg option. Additional features are available as compile time options, and may be become the default if deemed useful. In particular: + INT18/PXE boot (make -DPXE) This option enables booting through INT 18h (which on certain BIOSes can be hooked to PXE) by pressing F6. There is unfortunately no room to print the additional menu option. Also, to make room for the code, the 'Default: ' string is changed to 'Boot: ' + print current drive number (make -DTEST) Prints a line indicating the current drive number. This is useful to figure out what is going on for machines/bioses which remap drives in sometimes surprising ways. + disable numeric keys in console mode (make -DONLY_F_KEYS) Not really a significant option, but it is needed to make room for the -DTEST mode. + disable floppy support (make -DCHECK_DRIVE) Revert to the old behaviour of only accepting 0x80 and above as valid drive numbers. MFC after: 6 weeks
This is the top level of the FreeBSD source directory. This file was last revised on: $FreeBSD$ 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, the most commonly used one being ``world'', which rebuilds and installs everything in the FreeBSD system from the source tree except the kernel, the kernel-modules and the contents of /etc. The ``world'' target should only be used in cases where the source tree has not changed from the currently running version. See: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html for more information, including setting make(1) variables. The ``buildkernel'' and ``installkernel'' targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags. Building a kernel is a somewhat more involved process, documentation for which can be found at: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html And in the config(8) man page. Note: If you want to build and install the kernel with the ``buildkernel'' and ``installkernel'' targets, you might need to build world before. More information is available in the handbook. The sample kernel configuration files reside in the sys/<arch>/conf sub-directory (assuming that you've installed the kernel sources), the file named GENERIC being the one used to build your initial installation kernel. The file NOTES contains entries and documentation for all possible devices, not just those commonly used. It is the successor of the ancient LINT file, but in contrast to LINT, it is not buildable as a kernel but a pure reference and documentation file. Source Roadmap: --------------- bin System/user commands. contrib Packages contributed by 3rd parties. crypto Cryptography stuff (see crypto/README). etc Template files for /etc. games Amusements. 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. sys Kernel sources. 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: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html