48a0b96a50
things over floppy size limits, I can exclude it for release builds or something like that. Most of the changes are to get the load_elf.c file into a seperate elf32_ or elf64_ namespace so that you can have two ELF loaders present at once. Note that for 64 bit kernels, it actually starts up the kernel already in 64 bit mode with paging enabled. This is really easy because we have a known minimum feature set. Of note is that for amd64, we have to pass in the bios int 15 0xe821 memory map because once in long mode, you absolutely cannot make VM86 calls. amd64 does not use 'struct bootinfo' at all. It is a pure loader metadata startup, just like sparc64 and powerpc. Much of the infrastructure to support this was adapted from sparc64.
120 lines
3.3 KiB
C
120 lines
3.3 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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* $FreeBSD$
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*/
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#include <stand.h>
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#include <bootstrap.h>
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#include "libi386/libi386.h"
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/*
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* We could use linker sets for some or all of these, but
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* then we would have to control what ended up linked into
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* the bootstrap. So it's easier to conditionalise things
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* here.
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*
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* XXX rename these arrays to be consistent and less namespace-hostile
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*
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* XXX as libi386 and biosboot merge, some of these can become linker sets.
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*/
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#if defined(LOADER_NFS_SUPPORT) && defined(LOADER_TFTP_SUPPORT)
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#error "Cannot have both tftp and nfs support yet."
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#endif
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/* Exported for libstand */
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struct devsw *devsw[] = {
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&bioscd,
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&biosdisk,
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#if defined(LOADER_NFS_SUPPORT) || defined(LOADER_TFTP_SUPPORT)
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&pxedisk,
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#endif
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NULL
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};
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struct fs_ops *file_system[] = {
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&ufs_fsops,
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&ext2fs_fsops,
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&dosfs_fsops,
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&cd9660_fsops,
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&splitfs_fsops,
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#ifdef LOADER_GZIP_SUPPORT
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&gzipfs_fsops,
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#endif
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#ifdef LOADER_BZIP2_SUPPORT
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&bzipfs_fsops,
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#endif
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#ifdef LOADER_NFS_SUPPORT
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&nfs_fsops,
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#endif
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#ifdef LOADER_TFTP_SUPPORT
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&tftp_fsops,
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#endif
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NULL
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};
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/* Exported for i386 only */
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/*
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* Sort formats so that those that can detect based on arguments
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* rather than reading the file go first.
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*/
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extern struct file_format i386_elf;
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extern struct file_format amd64_elf;
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struct file_format *file_formats[] = {
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&i386_elf,
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&amd64_elf,
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NULL
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};
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/*
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* Consoles
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*
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* We don't prototype these in libi386.h because they require
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* data structures from bootstrap.h as well.
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*/
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extern struct console vidconsole;
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extern struct console comconsole;
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extern struct console nullconsole;
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struct console *consoles[] = {
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&vidconsole,
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&comconsole,
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&nullconsole,
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NULL
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};
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extern struct pnphandler isapnphandler;
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extern struct pnphandler biospnphandler;
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extern struct pnphandler biospcihandler;
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struct pnphandler *pnphandlers[] = {
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&biospnphandler, /* should go first, as it may set isapnp_readport */
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&isapnphandler,
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&biospcihandler,
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NULL
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};
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