Commit Graph

10 Commits

Author SHA1 Message Date
Doug Rabson
46b9a4ff52 Don't call prom_open() multiple times. This confuses some versions of SRM
and makes it impossible to boot from floppy and CD on some AlphaServer
platforms.

Detective work by: Michael Richards <michael@fastmail.ca>
2001-04-05 10:28:52 +00:00
Daniel C. Sobral
fbc9fa5059 Pass unit number to bcache_strategy(), so that the cache can be
flushed if the unit changes. Compute the absolute offset before
bcache_strategy() instead of after.

The actual fix is sligthly different for the one in the PR.

PR:		17098
Submitted by:	John Hood <jhood@sitaranetworks.com>
2000-03-15 01:53:34 +00:00
Poul-Henning Kamp
7d5961670c Remove BAD144 support, it has already been disabled for some time. 1999-12-08 09:33:00 +00:00
Doug Rabson
5ed53bbd66 Allow this driver to open disks with no labels (CDROMS don't). 1999-10-12 20:04:46 +00:00
Doug Rabson
74b128bad6 * Fix a stack of warnings.
* Make it possible to type a filename to boot1 so that it is possible to
  recover from fatally broken versions of /boot/loader.
* Make a start at a CD boot program (not yet functional).
1999-09-01 09:11:14 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Mike Smith
631746a171 Include "bootstrap.h" to get a definition for bcache_devdata.
Submitted by:	jkh
1998-11-03 23:44:49 +00:00
Mike Smith
af1f6e0673 Implement a simple LRU block cache. By default this is initialised to 16k,
and will bypass transfers for more than 8k.  Blocks are invalidated after
2 seconds, so removable media should not confuse the cache.

The 8k threshold is a compromise; all UFS transfers performed by
libstand are 8k or less, so large file reads thrash the cache.
However many filesystem metadata operations are also performed using
8k blocks, so using a lower threshold gives poor performance.

Those of you with an eye for cache algorithms are welcome to tell me
how badly this one sucks; you can start with the 'bcachestats' command
which will print the contents of the cache and access statistics.
1998-11-02 23:28:11 +00:00
Doug Rabson
06feb69276 * Extend the memory available for the heap from 256k to 512k.
* Embed the stack into the bss section for loader and netboot.  This
  is required for netboot since otherwise the stack would be inside our
  heap.
* Install loader and netboot in /boot by default.
* Fix getbootfile so that it searches for a ',' instead of a ';'
  when terminating the filename.
1998-10-31 17:12:32 +00:00
Mike Smith
c2f9d95de5 This is the new unified bootstrap, sometimes known previously as the
'three-stage' bootstrap.
There are a number of caveats with the code in its current state:
 - The i386 bootstrap only supports booting from a floppy.
 - The kernel and kld do not yet know how to deal with the extended
   information and module summary passed in.
 - PnP-based autodetection and demand loading of modules is not implemented.
 - i386 ELF kernel loading is not ready yet.
 - The i386 bootstrap is loaded via an ugly blockmap.

On the alpha, both net- and disk-booting (SRM console machines only) is
supported.  No blockmaps are used by this code.

Obtained from:	Parts from the NetBSD/i386 standalone bootstrap.
1998-08-21 03:17:42 +00:00