76ceb3c6ee
boundaries. For good measure, align all other objects to cache lines boundaries. Use the new arch_loadseg I/F to keep track of kernel text and data so that we can wire as much of it as is possible. It is the responsibility of the kernel to link critical (read IVT related) code and data at the front of the respective segment so that it's covered by TRs before the kernel has a chance to add more translations. Use a better way of determining whether we're loading a legacy kernel or not. We can't check for the presence of the PBVM page table, because we may have unloaded that kernel and loaded an older (legacy) kernel after that. Simply use the latest load address for it.
122 lines
3.6 KiB
C
122 lines
3.6 KiB
C
/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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* Copyright (c) 1998,2000 Doug Rabson <dfr@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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stand.h>
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#include <string.h>
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#include <setjmp.h>
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#include <machine/fpu.h>
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#include <libia64.h>
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#include "libski.h"
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extern char bootprog_name[];
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extern char bootprog_rev[];
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extern char bootprog_date[];
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extern char bootprog_maker[];
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struct devdesc currdev; /* our current device */
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struct arch_switch archsw; /* MI/MD interface boundary */
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void
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ski_main(void)
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{
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static char malloc[512*1024];
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int i;
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/*
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* initialise the heap as early as possible. Once this is done,
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* alloc() is usable. The stack is buried inside us, so this is
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* safe.
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*/
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setheap((void *)malloc, (void *)(malloc + 512*1024));
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/*
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* XXX Chicken-and-egg problem; we want to have console output
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* early, but some console attributes may depend on reading from
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* eg. the boot device, which we can't do yet. We can use
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* printf() etc. once this is done.
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*/
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cons_probe();
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/*
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* March through the device switch probing for things.
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*/
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for (i = 0; devsw[i] != NULL; i++)
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if (devsw[i]->dv_init != NULL)
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(devsw[i]->dv_init)();
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printf("\n");
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printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
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printf("(%s, %s)\n", bootprog_maker, bootprog_date);
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#if 0
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printf("Memory: %ld k\n", memsize() / 1024);
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#endif
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/* XXX presumes that biosdisk is first in devsw */
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currdev.d_dev = devsw[0];
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currdev.d_type = currdev.d_dev->dv_type;
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currdev.d_unit = 0;
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#if 0
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/* Create arc-specific variables */
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bootfile = GetEnvironmentVariable(ARCENV_BOOTFILE);
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if (bootfile)
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setenv("bootfile", bootfile, 1);
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#endif
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env_setenv("currdev", EV_VOLATILE, ia64_fmtdev(&currdev),
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ia64_setcurrdev, env_nounset);
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env_setenv("loaddev", EV_VOLATILE, ia64_fmtdev(&currdev), env_noset,
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env_nounset);
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setenv("LINES", "24", 1); /* optional */
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archsw.arch_autoload = ia64_autoload;
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archsw.arch_copyin = ia64_copyin;
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archsw.arch_copyout = ia64_copyout;
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archsw.arch_getdev = ia64_getdev;
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archsw.arch_loadaddr = ia64_loadaddr;
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archsw.arch_loadseg = ia64_loadseg;
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archsw.arch_readin = ia64_readin;
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interact(); /* doesn't return */
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exit(0);
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}
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COMMAND_SET(quit, "quit", "exit the loader", command_quit);
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static int
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command_quit(int argc, char *argv[])
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{
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exit(0);
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return (CMD_OK);
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}
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