NetBSD

History

pk e8880dceb9 Follow prototype changes in libsa.		1994-12-11 15:18:34 +00:00
..
Makefile	support obj directory	1994-11-25 23:09:34 +00:00
README	copyright/Id cleanup	1994-11-20 20:51:32 +00:00
boot.c	Follow prototype changes in libsa.	1994-12-11 15:18:34 +00:00
bootxx.c	copyright/Id cleanup	1994-11-20 20:51:32 +00:00
defs.h	copyright/Id cleanup	1994-11-20 20:51:32 +00:00
filesystem.c	copyright/Id cleanup	1994-11-20 20:51:32 +00:00
fixhdr.c	copyright/Id cleanup	1994-11-20 20:51:32 +00:00
installboot.c	copyright/Id cleanup	1994-11-20 20:51:32 +00:00
promdev.c	Follow prototype changes in libsa.	1994-12-11 15:18:34 +00:00
srt0.S	copyright/Id cleanup	1994-11-20 20:51:32 +00:00
version.c	copyright/Id cleanup	1994-11-20 20:51:32 +00:00

README

/*	$NetBSD: README,v 1.4 1994/11/20 20:54:50 deraadt Exp $ */

The sparc bootblocks are split into two parts: a small 1st-level program that
gets written right after the superblock in a partition (and is hence limited
in size to SBSIZE - DEV_BSIZE bytes), and a 2nd-level program that resides
in the filesystem proper.

The 1st-level program is loaded into memory by the PROM. It loads the second
stage program from a set of filesystem block numbers that are hard-coded
into it by the `installboot' program. The prototype code for the 1st-level
bootblocks are in `bootxx'.

The 2nd-level program (`boot') is normally installed in the root directory
as `/boot'. It uses the device drivers in the PROM and the stand-alone
filesystem code in `libsa.a' to locate and load the kernel.

Use the following command to install the 1st-level bootblocks in the
root filesystem (on `sd0a') using the file `/boot' as the second level
boot program:

	installboot /boot bootxx /dev/rsd0a