Commit Graph

16 Commits

Author SHA1 Message Date
Rodney W. Grimes
9949ebf656 1. BOOTSEG and BOOTSTACK are now set from the Makefile, the boot code has
been relocated to run in the 64k segment at 0x10000 with the stack at
    the top of this segment.  This corrects the problems machines with 512K
    base memory had booting.

2.  startprog routing rewritten to convert the BOOTSEG ss to a KERNELSEG
    ss, this eliminated the last of the >512K memory references.  Additional
    cleanup in here included a better way to copy the arguments to the
    kernel stack.

3.  Elimination of argv and esym cruft saved a few bytes.

4.  Only need to truncate the head.a_entry to a meg boundary once intead
    of every time we used it!  [Saving more bytes].

5.  Addition of version 1 bootinfo structure support.  These boot blocks
    pass the kernel name in to the kernel now.

6.  Removed historical comments about MACH argv stuff, as it is useless now.
1994-10-06 09:41:05 +00:00
Paul Richards
b95ed23990 Fixed bootblocks to work with FreeBSD 2.0
1) Fixed up some header locations
2) Replaced list of boot files with /kernel
3) Changed disklabel use in Makefile to conform to 4.4
4) Added size command in Makefile to get close estimate of bootblock
   sizes. Total size of text and data must be below 64K, slightly
   overestimated since a.out header subsequently gets stripped.
5) Various buffer sizes are set to 8192 bytes in sys.c. In 4.4 MAXBSIZE
   is set to 64K which is too big for the bootblocks to deal with.

Submitted by:	Paul Richards
1994-08-21 17:47:26 +00:00
Adam David
3f9e73d24f Changed delay mechanism to rely more on I/O spinning. If spinning on the
like this is bad news, it will have to be revised.
Shortened some verbose messages for when the kernel is loaded below 640k.
Updated version number.
1994-06-16 03:53:29 +00:00
Rodney W. Grimes
f2009cbfdb Touch the $Revision$ string to cause a cvs revision update of the boot
code (ie, should now print Revision 1.13).
1994-06-14 07:31:42 +00:00
Andrey A. Chernov
03afa5ecd8 Make bootblocks fit into 7168 limit 1994-05-30 05:23:53 +00:00
Martin Renters
0eb0343191 Change switch statement to two if statements. This saves 208 bytes in
the object file which is enough to bring the size down to the point
where the bootstrap fits into 15 sectors.
1994-05-01 03:53:29 +00:00
Poul-Henning Kamp
13042d1278 Adding bootoption '-r' which is "use compiled in root". This allows me to
boot from a floppy and have root on wd2 for instance.
1994-04-20 22:06:24 +00:00
Rodney W. Grimes
9ad564373e Bump boot block revision to 1.9 by a dummy edit on disk.c and:
>From: bde@kralizec.zeta.org.au (Bruce Evans)
Subject: cache botch in bootstrap
Date: Sun, 20 Feb 94 18:14:35 +1100
The cache in the bootstrap loader didn't allow for the device changing.

This caused surprisingly little trouble - the cache is only for a single
track (or part of a track), and the first access to a new device is
always for an early sector, so there is no problem unless the last access
to the old device was for an early sector.  I saw the problem on a system
with BSD on wd1 and no label on wd0.  Everything worked if the the device
name wd(1,a) was specified before the default of wd(0,a) was tried, but
when the default was tried, it failed on the first sector because there
was no label, and then the first sector on wd0 was always used instead
of the first sector on wd1, so there was apparently no label on wd1
either.

Bruce
1994-02-22 22:59:40 +00:00
Rodney W. Grimes
dd05fde699 Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, some
minor cleanup.  Added $Id$ to files that did not have any version info, etc
1993-10-16 19:17:18 +00:00
Rodney W. Grimes
6de3bf82d0 Dont just mask the Megabyte, we need all the bits below too,
and ELIMITNATE THE 28K BOGOUSITY.
1993-10-15 12:33:03 +00:00
Rodney W. Grimes
64e154d67b Fixed the options hd(1,... to be more accurate (removed word options it
now reads:

printf("use hd(1,a)/386bsd to boot sd0 when wd0 is also installed\n");

I know the person wanted more explination, but there is little room in
the boot blocks for verbose text!
1993-10-11 02:43:42 +00:00
Christoph Robitschko
950d93597c Changed the "Insert filesystem floppy" prompt to give the user a choice in
which drive he wants the root file system (A or B).
1993-10-09 08:31:39 +00:00
Rodney W. Grimes
bb9b7f49b4 Remove the ``loader overlaps bss, kernel must bzero'' printf since that
is so often reported as an error condition when it is not.  We print the
size of things so for those who want to know if this happened they can
figure it out from the size information that is printed.
1993-10-08 20:19:23 +00:00
Rodney W. Grimes
6d36c167f4 Changed header from 386BSD BOOT to FreeBSD BOOT. 1993-07-16 13:06:08 +00:00
Charlie Root
f7710986e2 New boot blocks, from Bruce Evans, and NetBSD fixes. Allows kernel to
be loaded above 1MB.  Same boot code for floppies now.  Speed improvements.
etc etc etc. (I don't have much history on this, but then have been tested)
1993-07-13 18:15:32 +00:00
Rodney W. Grimes
5b81b6b301 Initial import, 0.1 + pk 0.2.4-B1 1993-06-12 14:58:17 +00:00