FreeBSD/Linux Kernel Cross Reference
sys/i386/boot/kzipboot/

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Name	Size	Last modified (GMT)	Description
Parent directory		2023-01-29 20:54:29
Makefile	692 bytes	2023-01-29 20:54:29
README	1295 bytes	2023-01-29 20:54:29
boot.c	2693 bytes	2023-01-29 20:54:29
gzip.h	2765 bytes	2023-01-29 20:54:29
head.S	302 bytes	2023-01-29 20:54:29
malloc.c	2172 bytes	2023-01-29 20:54:29
misc.c	4687 bytes	2023-01-29 20:54:29
tail.S	283 bytes	2023-01-29 20:54:29
unzip.c	4715 bytes	2023-01-29 20:54:29

    1 /* Beware: mostly obsolete info */
    2 
    3 This is the first (alpha) release of kernel packer/unpacker
    4 for FreeBSD.  It is based on xBoot from Linux, but
    5 hardly rewritten.
    6 
    7 It assumes that:
    8 1) The kernel should be loaded at 0x100000 phys address.
    9 2) The CS selector is equal to 8, which is OK for all
   10    current secondary boot programs.
   11 
   12 Run "make install" to install it.  It will place
   13 "kzip" shell script into /usr/sbin, and several files
   14 into /usr/libexec/kzip directory.
   15 
   16 Then try to zip your kernel, for example:
   17 
   18         % kzip /kernel
   19         System size is 462848
   20         Compressed size 247027
   21 
   22 It will create file /kernel.kz:
   23 
   24         % ls -l /kernel /kernel.kz
   25         -rwxr-xr-x    1 root       497297 Oct  8 12:41 /386bsd
   26         -rwxrwxr-x    1 root       262144 Oct  8 13:37 /386bsd.kz
   27 
   28 Then rename /kernel.kz to /kernel and reboot.
   29 
   30         % mv /kernel /o3kernel
   31         % mv /kernel.kz /kernel
   32         % sync
   33         % reboot
   34 
   35 During booting, you will see the message:
   36 
   37         Uncompressing kernel...done
   38         Booting the kernel
   39 
   40 The packed kernel should load and run.
   41 
   42 The main problem with packed kernel is the lack of symbol table,
   43 so all commands that require it, will not run.
   44 Among them: ps, savecore, *stat, etc.
   45 
   46 Packed kernels are good for install and fixit floppies.
   47 
   48 Serge Vakulenko, <vak@zebub.msk.su>
   49 Opdated for FreeBSD 2.1 by Gary Jennejohn 12FEB95

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FreeBSD/Linux Kernel Cross Reference sys/i386/boot/kzipboot/

FreeBSD/Linux Kernel Cross Reference
sys/i386/boot/kzipboot/