c2f9d95de5
'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.
108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
/* $Id$ */
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/*
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* Copyright (c) 1996
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* Matthias Drochner. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project
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* by Matthias Drochner.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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* alpha fully-qualified device descriptor
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*/
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struct alpha_devdesc
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{
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struct devsw *d_dev;
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int d_type;
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#define DEVT_NONE 0
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#define DEVT_DISK 1
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#define DEVT_NET 2
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union
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{
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struct
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{
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int unit;
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int slice;
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int partition;
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} srmdisk;
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struct
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{
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int unit; /* XXX net layer lives over these? */
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} netif;
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} d_kind;
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};
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extern int alpha_getdev(void **vdev, char *devspec, char **path);
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extern char *alpha_fmtdev(void *vdev);
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extern int alpha_setcurrdev(struct env_var *ev, int flags, void *value);
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#define MAXDEV 31 /* maximum number of distinct devices */
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typedef unsigned long physaddr_t;
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/* exported devices XXX rename? */
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extern struct devsw srmdisk;
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extern struct netif_driver srmnet;
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/* this is in startup code */
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extern void delay(int);
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extern void reboot(void);
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/*
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* alpha module loader
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*/
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#define MF_FORMATMASK 0xf
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#define MF_AOUT 0 /* not supported */
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#define MF_ELF 1
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struct alpha_module
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{
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char *m_name; /* module name */
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char *m_type; /* module type, eg 'kernel', 'pnptable', etc. */
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char *m_args; /* arguments for the module */
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int m_flags; /* 0xffff reserved for arch-specific use */
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struct alpha_module *m_next; /* next module */
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physaddr_t m_addr; /* load address */
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size_t m_size; /* module size */
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};
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struct alpha_format
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{
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int l_format;
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/* Load function must return EFTYPE if it can't handle the module supplied */
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int (* l_load)(char *filename, physaddr_t dest, struct alpha_module **result);
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int (* l_exec)(struct alpha_module *amp);
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};
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extern struct alpha_format *formats[]; /* supplied by consumer */
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extern struct alpha_format alpha_elf;
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extern int alpha_boot(void);
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extern int alpha_autoload(void);
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extern struct alpha_module *alpha_findmodule(char *name, char *type);
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