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author | msmith <msmith@FreeBSD.org> | 1998-08-21 03:17:42 +0000 |
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committer | msmith <msmith@FreeBSD.org> | 1998-08-21 03:17:42 +0000 |
commit | 8adeb775c43d4c2ae76cce40837a3953af6abc83 (patch) | |
tree | ec778e5f3903abe2dbb59959c0fd8398c99c145b /sys/boot/common/dev_net.c | |
parent | 335c4be5b17816baac6b70d4d0b3132925de858d (diff) | |
download | FreeBSD-src-8adeb775c43d4c2ae76cce40837a3953af6abc83.zip FreeBSD-src-8adeb775c43d4c2ae76cce40837a3953af6abc83.tar.gz |
This is the new unified bootstrap, sometimes known previously as the
'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.
Diffstat (limited to 'sys/boot/common/dev_net.c')
-rw-r--r-- | sys/boot/common/dev_net.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/sys/boot/common/dev_net.c b/sys/boot/common/dev_net.c new file mode 100644 index 0000000..81f77c8 --- /dev/null +++ b/sys/boot/common/dev_net.c @@ -0,0 +1,275 @@ +/* + * $Id$ + * From: $NetBSD: dev_net.c,v 1.12 1997/12/10 20:38:37 gwr Exp $ + */ + +/*- + * Copyright (c) 1997 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Gordon W. Ross. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * This module implements a "raw device" interface suitable for + * use by the stand-alone I/O library NFS code. This interface + * does not support any "block" access, and exists only for the + * purpose of initializing the network interface, getting boot + * parameters, and performing the NFS mount. + * + * At open time, this does: + * + * find interface - netif_open() + * RARP for IP address - rarp_getipaddress() + * RPC/bootparams - callrpc(d, RPC_BOOTPARAMS, ...) + * RPC/mountd - nfs_mount(sock, ip, path) + * + * the root file handle from mountd is saved in a global + * for use by the NFS open code (NFS/lookup). + */ + +#include <machine/stdarg.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <net/if.h> +#include <netinet/in.h> +#include <netinet/in_systm.h> + +#include <stand.h> +#include <net.h> +#include <netif.h> +#include <nfs.h> +#include <bootparam.h> + +#include "dev_net.h" +#include "bootstrap.h" + +int debug = 0; + +static int netdev_sock = -1; +static int netdev_opens; + +static int net_init(void); +static int net_open(struct open_file *, void *vdev); +static int net_close(struct open_file *); +static int net_ioctl(); +static int net_strategy(); + +static int net_getparams(int sock); + +struct devsw netdev = { + "net", + DEVT_NET, + net_init, + net_strategy, + net_open, + net_close, + noioctl +}; + +int +net_init(void) +{ + return 0; +} + +/* + * Called by devopen after it sets f->f_dev to our devsw entry. + * This opens the low-level device and sets f->f_devdata. + * This is declared with variable arguments... + */ +int +net_open(struct open_file *f, void *vdev) +{ + char *devname; /* Device part of file name (or NULL). */ + int error = 0; + + devname = vdev; + + /* On first open, do netif open, mount, etc. */ + if (netdev_opens == 0) { + /* Find network interface. */ + if (netdev_sock < 0) { + netdev_sock = netif_open(devname); + if (netdev_sock < 0) { + printf("net_open: netif_open() failed\n"); + return (ENXIO); + } + if (debug) + printf("net_open: netif_open() succeeded\n"); + } + if (rootip.s_addr == 0) { + /* Get root IP address, and path, etc. */ + error = net_getparams(netdev_sock); + if (error) { + /* getparams makes its own noise */ + netif_close(netdev_sock); + netdev_sock = -1; + return (error); + } + } + } + netdev_opens++; + f->f_devdata = &netdev_sock; + return (error); +} + +int +net_close(f) + struct open_file *f; +{ + +#ifdef NETIF_DEBUG + if (debug) + printf("net_close: opens=%d\n", netdev_opens); +#endif + + /* On last close, do netif close, etc. */ + f->f_devdata = NULL; + /* Extra close call? */ + if (netdev_opens <= 0) + return (0); + /* + * On SRM boots opening the device the first time takes ages + * I don't see the point of doing this every time you load a file + */ + /* netdev_opens--; */ + /* Not last close? */ + if (netdev_opens > 0) + return(0); + rootip.s_addr = 0; + if (netdev_sock >= 0) { + if (debug) + printf("net_close: calling netif_close()\n"); + netif_close(netdev_sock); + netdev_sock = -1; + } + return (0); +} + +int +net_ioctl() +{ + return EIO; +} + +int +net_strategy() +{ + return EIO; +} + +#define SUPPORT_BOOTP + +/* + * Get info for NFS boot: our IP address, our hostname, + * server IP address, and our root path on the server. + * There are two ways to do this: The old, Sun way, + * and the more modern, BOOTP way. (RFC951, RFC1048) + * + * The default is to use the Sun bootparams RPC + * (because that is what the kernel will do). + * MD code can make try_bootp initialied data, + * which will override this common definition. + */ +#ifdef SUPPORT_BOOTP +int try_bootp = 1; +int bootp(int sock); +#endif + +static int +net_getparams(sock) + int sock; +{ + char buf[MAXHOSTNAMELEN]; + n_long smask; + +#ifdef SUPPORT_BOOTP + /* + * Try to get boot info using BOOTP. If we succeed, then + * the server IP address, gateway, and root path will all + * be initialized. If any remain uninitialized, we will + * use RARP and RPC/bootparam (the Sun way) to get them. + */ + if (try_bootp) + bootp(sock); + if (myip.s_addr != 0) + return (0); + if (debug) + printf("net_open: BOOTP failed, trying RARP/RPC...\n"); +#endif + + /* + * Use RARP to get our IP address. This also sets our + * netmask to the "natural" default for our address. + */ + if (rarp_getipaddress(sock)) { + printf("net_open: RARP failed\n"); + return (EIO); + } + printf("net_open: client addr: %s\n", inet_ntoa(myip)); + + /* Get our hostname, server IP address, gateway. */ + if (bp_whoami(sock)) { + printf("net_open: bootparam/whoami RPC failed\n"); + return (EIO); + } + printf("net_open: client name: %s\n", hostname); + + /* + * Ignore the gateway from whoami (unreliable). + * Use the "gateway" parameter instead. + */ + smask = 0; + gateip.s_addr = 0; + if (bp_getfile(sock, "gateway", &gateip, buf) == 0) { + /* Got it! Parse the netmask. */ + smask = ip_convertaddr(buf); + } + if (smask) { + netmask = smask; + printf("net_open: subnet mask: %s\n", intoa(netmask)); + } + if (gateip.s_addr) + printf("net_open: net gateway: %s\n", inet_ntoa(gateip)); + + /* Get the root server and pathname. */ + if (bp_getfile(sock, "root", &rootip, rootpath)) { + printf("net_open: bootparam/getfile RPC failed\n"); + return (EIO); + } + + printf("net_open: server addr: %s\n", inet_ntoa(rootip)); + printf("net_open: server path: %s\n", rootpath); + + return (0); +} |