Multiple boot devices and/or paths may be specified, which are booted one
after another until success. When no boot device is specified altboot tries to boot from all disk devices with a valid NetBSD disklabel, starting with unit 0.
This commit is contained in:
phx
parent
8e0aa55040
commit
6bff4e7743
@ -1,6 +1,6 @@
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/// notes about altboot ///
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$NetBSD: README.altboot,v 1.10 2012/04/24 14:56:07 nisimura Exp $
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$NetBSD: README.altboot,v 1.11 2012/04/26 19:59:36 phx Exp $
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Altboot is a functional bridge to fill the gap between a NAS product
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custom bootloader and the NetBSD kernel startup environment. Altboot
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@ -61,11 +61,11 @@ that the original U-Boot/PPCboot still remains useful and altboot works
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as a functional extension for them.
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In case the firmware was crippled by the vendor so that it only boots
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Linux U-Boot images (D-Link), you can still use altboot by uploading
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altboot.img instead of the Linux kernel.
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Linux U-Boot images (D-Link, Synology 2007), you can still use altboot by
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overwriting the Linux kernel with altboot.img.
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Altboot passes the following bootinfo records to the NetBSD/sandpoint
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kernel.
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kernel:
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- processor clock tick value driving MPC8241/8245.
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- serial console selection.
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- booted kernel filename and which device it was fetched from.
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@ -104,7 +104,12 @@ restarts itself. Mainly useful for altboot testing.
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Multiple arguments may be specified at once, although not all combinations
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make sense. The format of an altboot command line is:
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[[<bootargs> ...] <devicename>:[<bootfile>]]
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[[<bootargs> ...] <devicename>:[<bootfile>] ...]
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Multiple boot devices and/or paths may be specified, which are booted one
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after another until success. When no boot device is specified altboot tries
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to boot from all disk devices with a valid NetBSD disklabel, starting with
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unit 0.
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The following device names are supported:
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- tftp boot from TFTP (address retrieved by DHCP)
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@ -1,4 +1,4 @@
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/* $NetBSD: dsk.c,v 1.15 2012/04/09 12:40:55 nisimura Exp $ */
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/* $NetBSD: dsk.c,v 1.16 2012/04/26 19:59:37 phx Exp $ */
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/*-
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* Copyright (c) 2010 The NetBSD Foundation, Inc.
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@ -83,7 +83,6 @@ static void issue48(struct dvata_chan *, int64_t, int);
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static void issue28(struct dvata_chan *, int64_t, int);
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static struct disk *lookup_disk(int);
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#define MAX_UNITS 8
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static struct disk ldisk[MAX_UNITS];
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int
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@ -462,7 +461,18 @@ static struct disk *
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lookup_disk(int unit)
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{
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return &ldisk[unit];
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return (unit >= 0 && unit < MAX_UNITS) ? &ldisk[unit] : NULL;
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}
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int
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dlabel_valid(int unit)
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{
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struct disk *dsk;
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dsk = lookup_disk(unit);
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if (dsk == NULL)
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return NULL;
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return dsk->dlabel != NULL;
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}
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int
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@ -487,10 +497,10 @@ dsk_open(struct open_file *f, ...)
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if ((d = lookup_disk(unit)) == NULL)
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return ENXIO;
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f->f_devdata = d;
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if ((dlp = d->dlabel) == NULL || part >= dlp->d_npartitions)
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return ENXIO;
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d->part = part;
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f->f_devdata = d;
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snprintf(bi_path.bootpath, sizeof(bi_path.bootpath), name);
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if (dlp->d_partitions[part].p_fstype == FS_BSDFFS) {
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@ -1,4 +1,4 @@
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/* $NetBSD: globals.h,v 1.18 2012/04/16 16:55:29 phx Exp $ */
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/* $NetBSD: globals.h,v 1.19 2012/04/26 19:59:37 phx Exp $ */
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#ifdef DEBUG
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#define DPRINTF(x) printf x
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@ -167,8 +167,23 @@ NIF_DECL(skg);
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NIF_DECL(stg);
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/* DSK support */
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int dskdv_init(void *);
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#define MAX_UNITS 4
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struct disk {
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char xname[8];
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void *dvops;
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unsigned unittag;
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uint16_t ident[128];
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uint64_t nsect;
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uint64_t first;
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void *dlabel;
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int part;
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void *fsops;
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int (*lba_read)(struct disk *, int64_t, int, void *);
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};
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int dskdv_init(void *);
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int dlabel_valid(int);
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int dsk_open(struct open_file *, ...);
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int dsk_close(struct open_file *);
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int dsk_strategy(void *, int, daddr_t, size_t, void *, size_t *);
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@ -230,19 +245,6 @@ struct dkdev_ata {
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char *iobuf;
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};
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struct disk {
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char xname[8];
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void *dvops;
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unsigned unittag;
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uint16_t ident[128];
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uint64_t nsect;
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uint64_t first;
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void *dlabel;
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int part;
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void *fsops;
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int (*lba_read)(struct disk *, int64_t, int, void *);
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};
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int spinwait_unbusy(struct dkdev_ata *, int, int, const char **);
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int perform_atareset(struct dkdev_ata *, int);
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void wakeup_drive(struct dkdev_ata *, int);
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@ -1,4 +1,4 @@
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/* $NetBSD: main.c,v 1.18 2012/04/16 16:55:29 phx Exp $ */
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/* $NetBSD: main.c,v 1.19 2012/04/26 19:59:37 phx Exp $ */
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/*-
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* Copyright (c) 2007 The NetBSD Foundation, Inc.
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@ -119,15 +119,14 @@ static void sat_test(void);
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void
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main(int argc, char *argv[], char *bootargs_start, char *bootargs_end)
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{
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struct brdprop *brdprop;
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unsigned long marks[MARK_MAX];
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struct brdprop *brdprop;
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char *new_argv[MAX_ARGS];
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ssize_t len;
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int n, i, fd, howto;
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char *bname;
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ssize_t len;
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int err, fd, howto, i, n;
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printf("\n");
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printf(">> %s altboot, revision %s\n", bootprog_name, bootprog_rev);
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printf("\n>> %s altboot, revision %s\n", bootprog_name, bootprog_rev);
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brdprop = brd_lookup(brdtype);
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printf(">> %s, cpu %u MHz, bus %u MHz, %dMB SDRAM\n", brdprop->verbose,
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@ -233,7 +232,7 @@ main(int argc, char *argv[], char *bootargs_start, char *bootargs_end)
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/* wait 2s for user to enter interactive mode */
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for (n = 200; n >= 0; n--) {
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if (n % 100 == 0)
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printf("Hit any key to enter interactive mode: %d\r",
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printf("\rHit any key to enter interactive mode: %d",
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n / 100);
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if (tstchar()) {
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#ifdef DEBUG
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@ -272,85 +271,112 @@ main(int argc, char *argv[], char *bootargs_start, char *bootargs_end)
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if (i >= sizeof(bootargs) / sizeof(bootargs[0]))
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break; /* break on first unknown string */
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}
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if (n >= argc)
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bname = BNAME_DEFAULT;
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else {
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bname = argv[n];
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if (check_bootname(bname) == 0) {
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printf("%s not a valid bootname\n", bname);
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goto loadfail;
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if (n >= argc) {
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/*
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* If no device name is given we construct a list of drives
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* which have valid disklabels.
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*/
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n = 0;
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argc = 0;
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argv = alloc(MAX_UNITS * (sizeof(char *) + sizeof("wdN:")));
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bname = (char *)(argv + MAX_UNITS);
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for (i = 0; i < MAX_UNITS; i++) {
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if (!dlabel_valid(i))
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continue;
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sprintf(bname, "wd%d:", i);
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argv[argc++] = bname;
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bname += sizeof("wdN:");
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}
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/* use default drive if no valid disklabel is found */
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if (argc == 0) {
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argc = 1;
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argv[0] = BNAME_DEFAULT;
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}
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}
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if ((fd = open(bname, 0)) < 0) {
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if (errno == ENOENT)
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printf("\"%s\" not found\n", bi_path.bootpath);
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goto loadfail;
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}
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printf("loading \"%s\" ", bi_path.bootpath);
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marks[MARK_START] = 0;
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while (n < argc) {
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bname = argv[n++];
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if (howto == -1) {
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/* load another altboot binary and replace ourselves */
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len = read(fd, (void *)0x100000, 0x1000000 - 0x100000);
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if (len == -1)
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goto loadfail;
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if (check_bootname(bname) == 0) {
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printf("%s not a valid bootname\n", bname);
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continue;
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}
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if ((fd = open(bname, 0)) < 0) {
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if (errno == ENOENT)
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printf("\"%s\" not found\n", bi_path.bootpath);
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continue;
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}
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printf("loading \"%s\" ", bi_path.bootpath);
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marks[MARK_START] = 0;
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if (howto == -1) {
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/* load another altboot binary and replace ourselves */
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len = read(fd, (void *)0x100000, 0x1000000 - 0x100000);
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if (len == -1)
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goto loadfail;
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close(fd);
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netif_shutdown_all();
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memcpy((void *)0xf0000, newaltboot,
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newaltboot_end - newaltboot);
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__syncicache((void *)0xf0000,
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newaltboot_end - newaltboot);
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printf("Restarting...\n");
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run((void *)1, argv, (void *)0x100000, (void *)len,
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(void *)0xf0000);
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}
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err = fdloadfile(fd, marks, LOAD_KERNEL);
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close(fd);
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if (err < 0)
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continue;
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printf("entry=%p, ssym=%p, esym=%p\n",
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(void *)marks[MARK_ENTRY],
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(void *)marks[MARK_SYM],
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(void *)marks[MARK_END]);
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bootinfo = (void *)0x4000;
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bi_init(bootinfo);
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bi_add(&bi_cons, BTINFO_CONSOLE, sizeof(bi_cons));
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bi_add(&bi_mem, BTINFO_MEMORY, sizeof(bi_mem));
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bi_add(&bi_clk, BTINFO_CLOCK, sizeof(bi_clk));
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bi_add(&bi_path, BTINFO_BOOTPATH, sizeof(bi_path));
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bi_add(&bi_rdev, BTINFO_ROOTDEVICE, sizeof(bi_rdev));
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bi_add(&bi_fam, BTINFO_PRODFAMILY, sizeof(bi_fam));
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if (brdtype == BRD_SYNOLOGY || brdtype == BRD_DLINKDSM) {
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/* need to pass this MAC address to kernel */
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bi_add(&bi_net, BTINFO_NET, sizeof(bi_net));
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}
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if (modules_enabled) {
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module_add(fsmod);
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if (fsmod2 != NULL && strcmp(fsmod, fsmod2) != 0)
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module_add(fsmod2);
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kmodloadp = marks[MARK_END];
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btinfo_modulelist = NULL;
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module_load(bname);
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if (btinfo_modulelist != NULL &&
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btinfo_modulelist->num > 0)
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bi_add(btinfo_modulelist, BTINFO_MODULELIST,
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btinfo_modulelist_size);
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}
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launchfixup();
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netif_shutdown_all();
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memcpy((void *)0xf0000, newaltboot,
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newaltboot_end - newaltboot);
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__syncicache((void *)0xf0000, newaltboot_end - newaltboot);
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printf("Restarting...\n");
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run((void *)1, argv, (void *)0x100000, (void *)len,
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(void *)0xf0000);
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} else if (fdloadfile(fd, marks, LOAD_KERNEL) < 0)
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goto loadfail;
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close(fd);
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__syncicache((void *)marks[MARK_ENTRY],
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(u_int)marks[MARK_SYM] - (u_int)marks[MARK_ENTRY]);
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printf("entry=%p, ssym=%p, esym=%p\n",
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(void *)marks[MARK_ENTRY],
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(void *)marks[MARK_SYM],
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(void *)marks[MARK_END]);
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run((void *)marks[MARK_SYM], (void *)marks[MARK_END],
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(void *)howto, bootinfo, (void *)marks[MARK_ENTRY]);
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bootinfo = (void *)0x4000;
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bi_init(bootinfo);
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bi_add(&bi_cons, BTINFO_CONSOLE, sizeof(bi_cons));
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bi_add(&bi_mem, BTINFO_MEMORY, sizeof(bi_mem));
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bi_add(&bi_clk, BTINFO_CLOCK, sizeof(bi_clk));
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bi_add(&bi_path, BTINFO_BOOTPATH, sizeof(bi_path));
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bi_add(&bi_rdev, BTINFO_ROOTDEVICE, sizeof(bi_rdev));
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bi_add(&bi_fam, BTINFO_PRODFAMILY, sizeof(bi_fam));
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if (brdtype == BRD_SYNOLOGY || brdtype == BRD_DLINKDSM) {
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/* need to set this MAC address in kernel driver later */
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bi_add(&bi_net, BTINFO_NET, sizeof(bi_net));
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/* should never come here */
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printf("exec returned. Restarting...\n");
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_rtt();
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}
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if (modules_enabled) {
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module_add(fsmod);
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if (fsmod2 != NULL && strcmp(fsmod, fsmod2) != 0)
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module_add(fsmod2);
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kmodloadp = marks[MARK_END];
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btinfo_modulelist = NULL;
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module_load(bname);
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if (btinfo_modulelist != NULL && btinfo_modulelist->num > 0)
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bi_add(btinfo_modulelist, BTINFO_MODULELIST,
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btinfo_modulelist_size);
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}
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launchfixup();
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netif_shutdown_all();
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__syncicache((void *)marks[MARK_ENTRY],
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(u_int)marks[MARK_SYM] - (u_int)marks[MARK_ENTRY]);
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run((void *)marks[MARK_SYM], (void *)marks[MARK_END],
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(void *)howto, bootinfo, (void *)marks[MARK_ENTRY]);
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/* should never come here */
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printf("exec returned. Restarting...\n");
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_rtt();
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loadfail:
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printf("load failed. Restarting...\n");
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_rtt();
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Block a user