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.
156 lines
4.0 KiB
C
156 lines
4.0 KiB
C
/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id$
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*/
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#include <stand.h>
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#include <string.h>
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#include <sys/reboot.h>
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#include "bootstrap.h"
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char *command_errmsg;
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char command_errbuf[256]; /* XXX should have procedural interface for setting, size limit? */
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COMMAND_SET(help, "help", "detailed help", command_help);
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static int
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command_help(int argc, char *argv[])
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{
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char helppath[80]; /* XXX buffer size? */
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/* page the help text from our load path */
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sprintf(helppath, "%s/boot.help", getenv("loaddev"));
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printf("%s\n", helppath);
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if (pager_file(helppath) == -1)
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printf("Verbose help not available, use '?' to list commands\n");
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return(CMD_OK);
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}
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COMMAND_SET(commandlist, "?", "list commands", command_commandlist);
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static int
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command_commandlist(int argc, char *argv[])
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{
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struct bootblk_command **cmdp;
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int i;
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printf("Available commands:\n");
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cmdp = (struct bootblk_command **)Xcommand_set.ls_items;
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for (i = 0; i < Xcommand_set.ls_length; i++)
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if (cmdp[i]->c_name != NULL)
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printf(" %-15s %s\n", cmdp[i]->c_name, cmdp[i]->c_desc);
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return(CMD_OK);
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}
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/*
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* XXX set/show should become set/echo if we have variable
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* substitution happening.
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*/
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COMMAND_SET(show, "show", "show variable(s)", command_show);
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static int
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command_show(int argc, char *argv[])
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{
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struct env_var *ev;
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char *cp;
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if (argc < 2) {
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/*
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* With no arguments, print everything.
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*/
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pager_open();
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for (ev = environ; ev != NULL; ev = ev->ev_next) {
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pager_output(ev->ev_name);
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cp = getenv(ev->ev_name);
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if (cp != NULL) {
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pager_output("=");
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pager_output(cp);
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}
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pager_output("\n");
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}
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pager_close();
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} else {
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if ((cp = getenv(argv[1])) != NULL) {
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printf("%s\n", cp);
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} else {
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sprintf(command_errbuf, "variable '%s' not found", argv[1]);
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return(CMD_ERROR);
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}
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}
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return(CMD_OK);
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}
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COMMAND_SET(set, "set", "set a variable", command_set);
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static int
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command_set(int argc, char *argv[])
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{
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int err;
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if (argc != 2) {
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command_errmsg = "wrong number of arguments";
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return(CMD_ERROR);
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} else {
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if ((err = putenv(argv[1])) != 0) {
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command_errmsg = strerror(err);
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return(CMD_ERROR);
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}
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}
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return(CMD_OK);
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}
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COMMAND_SET(unset, "unset", "unset a variable", command_unset);
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static int
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command_unset(int argc, char *argv[])
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{
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int err;
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if (argc != 2) {
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command_errmsg = "wrong number of arguments";
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return(CMD_ERROR);
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} else {
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if ((err = unsetenv(argv[1])) != 0) {
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command_errmsg = strerror(err);
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return(CMD_ERROR);
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}
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}
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return(CMD_OK);
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}
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COMMAND_SET(panic, "panic", "test panic", command_panic);
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static int
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command_panic(int argc, char *argv[])
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{
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char *cp;
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cp = unargv(argc - 1, argv + 1);
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panic(cp);
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}
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