Use the new machine-independent setroot().
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thorpej
parent
aea810c379
commit
16d4fd0ac8
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@ -1,4 +1,4 @@
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/* $NetBSD: autoconf.c,v 1.45 1996/12/23 09:15:39 veego Exp $ */
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/* $NetBSD: autoconf.c,v 1.46 1997/01/31 01:43:37 thorpej Exp $ */
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/*
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* Copyright (c) 1994 Christian E. Hopps
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@ -33,27 +33,41 @@
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#include <sys/systm.h>
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#include <sys/reboot.h>
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#include <sys/conf.h>
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#include <sys/buf.h>
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#include <sys/device.h>
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#include <sys/disklabel.h>
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#include <sys/disk.h>
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#include <machine/cpu.h>
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#include <amiga/amiga/cfdev.h>
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#include <amiga/amiga/device.h>
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#include <amiga/amiga/custom.h>
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void setroot __P((void));
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void swapconf __P((void));
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void findroot __P((struct device **, int *));
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void mbattach __P((struct device *, struct device *, void *));
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int mbprint __P((void *, const char *));
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int mbmatch __P((struct device *, struct cfdata *, void *));
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int cold; /* 1 if still booting */
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#include <sys/kernel.h>
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struct devnametobdevmaj amiga_nam2blk[] = {
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{ "fd", 2 },
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{ "sd", 4 },
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{ "cd", 7 },
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#ifdef notyet
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{ "md", XXX },
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#endif
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{ NULL, 0 },
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};
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/*
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* called at boot time, configure all devices on system
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*/
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void
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configure()
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{
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struct device *booted_device;
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int booted_partition;
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int s;
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/*
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* this is the real thing baby (i.e. not console init)
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@ -91,27 +105,18 @@ configure()
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printf("survived interrupt enable\n");
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#endif
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#ifdef GENERIC
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if ((boothowto & RB_ASKNAME) == 0) {
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setroot();
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findroot(&booted_device, &booted_partition);
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#ifdef DEBUG_KERNEL_START
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printf("survived findroot()\n");
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#endif
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setroot(booted_device, booted_partition, amiga_nam2blk);
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#ifdef DEBUG_KERNEL_START
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printf("survived setroot()\n");
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#endif
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}
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setconf();
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#ifdef DEBUG_KERNEL_START
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printf("survived setconf()\n");
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#endif
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#else
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setroot();
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#ifdef DEBUG_KERNEL_START
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printf("survived setroot()\n");
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#endif
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#endif
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#ifdef DEBUG_KERNEL_START
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printf("survived root device search\n");
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#endif
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swapconf();
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dumpconf();
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if (dumplo < 0)
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dumplo = 0;
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#ifdef DEBUG_KERNEL_START
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printf("survived swap device search\n");
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#endif
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@ -287,96 +292,103 @@ mbprint(auxp, pnp)
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return(UNCONF);
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}
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void
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swapconf()
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{
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struct swdevt *swp;
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u_int maj;
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int nb;
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/*
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* The system will assign the "booted device" indicator (and thus
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* rootdev if rootspec is wildcarded) to the first partition 'a'
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* in preference of boot. However, it does walk unit backwards
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* to remain compatible with the old Amiga method of picking the
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* last root found.
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*/
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#include <sys/fcntl.h> /* XXXX and all that uses it */
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#include <sys/proc.h> /* XXXX and all that uses it */
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for (swp = swdevt; swp->sw_dev > 0; swp++) {
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maj = major(swp->sw_dev);
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#include "fd.h"
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#include "sd.h"
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#include "cd.h"
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if (maj > nblkdev)
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break;
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#if NFD > 0
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extern struct cfdriver fd_cd;
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#endif
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#if NSD > 0
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extern struct cfdriver sd_cd;
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#endif
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#if NCD > 0
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extern struct cfdriver cd_cd;
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#endif
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if (bdevsw[maj].d_psize) {
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nb = bdevsw[maj].d_psize(swp->sw_dev);
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if (nb > 0 &&
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(swp->sw_nblks == 0 || swp->sw_nblks > nb))
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swp->sw_nblks = nb;
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else
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swp->sw_nblks = 0;
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}
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swp->sw_nblks = ctod(dtoc(swp->sw_nblks));
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}
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dumpconf();
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if (dumplo < 0)
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dumplo = 0;
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}
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#define DOSWAP /* change swdevt and dumpdev */
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u_long bootdev = 0; /* should be dev_t, but not until 32 bits */
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static char devname[][2] = {
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{ 0 ,0 },
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{ 0 ,0 },
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{ 'f' ,'d' }, /* 2 = fd */
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{ 0 ,0 },
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{ 's' ,'d' } /* 4 = sd -- new SCSI system */
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struct cfdriver *genericconf[] = {
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#if NFD > 0
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&fd_cd,
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#endif
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#if NSD > 0
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&sd_cd,
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#endif
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#if NCD > 0
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&cd_cd,
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#endif
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NULL,
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};
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void
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setroot()
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findroot(devpp, partp)
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struct device **devpp;
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int *partp;
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{
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int majdev, mindev, unit, part, adaptor;
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dev_t temp = 0;
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dev_t orootdev;
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struct swdevt *swp;
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struct disk *dkp;
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struct partition *pp;
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struct device **devs;
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int i, maj, unit;
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if (boothowto & RB_DFLTROOT ||
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(bootdev & B_MAGICMASK) != (u_long)B_DEVMAGIC)
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return;
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majdev = (bootdev >> B_TYPESHIFT) & B_TYPEMASK;
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if (majdev > sizeof(devname) / sizeof(devname[0]))
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return;
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adaptor = (bootdev >> B_ADAPTORSHIFT) & B_ADAPTORMASK;
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part = (bootdev >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
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unit = (bootdev >> B_UNITSHIFT) & B_UNITMASK;
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orootdev = rootdev;
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rootdev = MAKEDISKDEV(majdev, unit, part);
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/*
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* If the original rootdev is the same as the one
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* just calculated, don't need to adjust the swap configuration.
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* Default to "not found".
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*/
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if (rootdev == orootdev)
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return;
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printf("changing root device to %c%c%d%c\n",
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devname[majdev][0], devname[majdev][1],
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unit, part + 'a');
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#ifdef DOSWAP
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mindev = DISKUNIT(rootdev);
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for (swp = swdevt; swp->sw_dev; swp++) {
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if (majdev == major(swp->sw_dev) &&
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mindev == DISKUNIT(swp->sw_dev)) {
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temp = swdevt[0].sw_dev;
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swdevt[0].sw_dev = swp->sw_dev;
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swp->sw_dev = temp;
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*devpp = NULL;
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/* always partition 'a' */
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*partp = 0;
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for (i = 0; genericconf[i] != NULL; i++) {
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for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
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if (genericconf[i]->cd_devs[unit] == NULL)
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continue;
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/*
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* Find the disk structure corresponding to the
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* current device.
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*/
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devs = (struct device **)genericconf[i]->cd_devs;
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if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
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continue;
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if (dkp->dk_driver == NULL ||
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dkp->dk_driver->d_strategy == NULL)
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continue;
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for (maj = 0; maj < nblkdev; maj++)
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if (bdevsw[maj].d_strategy ==
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dkp->dk_driver->d_strategy)
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break;
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}
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}
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if (swp->sw_dev == 0)
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return;
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/*
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* If dumpdev was the same as the old primary swap
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* device, move it to the new primary swap device.
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*/
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if (temp == dumpdev)
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dumpdev = swdevt[0].sw_dev;
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#ifdef DIAGNOSTIC
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if (maj >= nblkdev)
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panic("findroot: impossible");
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#endif
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}
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/* Open disk; forces read of disklabel. */
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if ((*bdevsw[maj].d_open)(MAKEDISKDEV(maj,
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unit, 0), FREAD|FNONBLOCK, 0, &proc0))
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continue;
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(void)(*bdevsw[maj].d_open)(MAKEDISKDEV(maj,
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unit, 0), FREAD|FNONBLOCK, 0, &proc0);
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pp = &dkp->dk_label->d_partitions[0];
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if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
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*devpp = devs[unit];
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*partp = 0;
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return;
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}
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}
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}
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}
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/*
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* Try to determine, of this machine is an A3000, which has a builtin
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