Drop down Apple Partition Map code that has been in use by some
ppc developers for a while. OK'd by: phk
This commit is contained in:
Peter Grehan
parent
148f84cf1e
commit
485d645e63
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=111277
@ -1,5 +1,6 @@
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/*-
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* Copyright (c) 2002 Poul-Henning Kamp
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*
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* Copyright (c) 2002 Peter Grehan.
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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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@ -10,9 +11,6 @@
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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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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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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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@ -29,155 +27,240 @@
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* $FreeBSD$
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*/
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/*
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* GEOM module for Apple Partition Maps
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* As described in 'Inside Macintosh Vol 3: About the SCSI Manager -
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* The Structure of Block Devices"
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*/
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#include <sys/param.h>
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#ifndef _KERNEL
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <sys/param.h>
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#include <stdlib.h>
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#include <err.h>
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#else
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/conf.h>
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#include <sys/bio.h>
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#include <sys/malloc.h>
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#include <sys/bio.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#endif
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#include <sys/sbuf.h>
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#include <geom/geom.h>
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#include <geom/geom_slice.h>
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#include <machine/endian.h>
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#define APPLE_CLASS_NAME "APPLE"
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struct g_apple_softc {
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int nheads;
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int nsects;
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int nalt;
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#define NAPMPART 16 /* Max partitions */
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struct apm_partition {
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char am_sig[2];
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u_int32_t am_mapcnt;
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u_int32_t am_start;
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u_int32_t am_partcnt;
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char am_name[32];
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char am_type[32];
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};
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struct g_apple_softc {
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u_int16_t dd_bsiz;
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u_int32_t dd_blkcnt;
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u_int16_t dd_drvrcnt;
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u_int32_t am_mapcnt0;
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struct apm_partition apmpart[NAPMPART];
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};
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static void
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g_dec_drvrdesc(u_char *ptr, struct g_apple_softc *sc)
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{
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sc->dd_bsiz = g_dec_be2(ptr + 2);
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sc->dd_blkcnt = g_dec_be4(ptr + 4);
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sc->dd_drvrcnt = g_dec_be4(ptr + 16);
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}
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static void
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g_dec_apple_partition(u_char *ptr, struct apm_partition *d)
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{
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d->am_sig[0] = ptr[0];
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d->am_sig[1] = ptr[1];
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d->am_mapcnt = g_dec_be4(ptr + 4);
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d->am_start = g_dec_be4(ptr + 8);
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d->am_partcnt = g_dec_be4(ptr + 12);
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memcpy(d->am_name, ptr + 16, 32);
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memcpy(d->am_type, ptr + 48, 32);
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}
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static int
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g_apple_start(struct bio *bp)
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{
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struct g_provider *pp;
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struct g_geom *gp;
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struct g_apple_softc *ms;
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struct g_apm_softc *mp;
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struct g_slicer *gsp;
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gp = bp->bio_to->geom;
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pp = bp->bio_to;
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gp = pp->geom;
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gsp = gp->softc;
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ms = gsp->softc;
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mp = gsp->softc;
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if (bp->bio_cmd == BIO_GETATTR) {
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if (g_handleattr_off_t(bp, "APM::offset",
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gsp->slices[pp->index].offset))
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return (1);
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}
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return (0);
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}
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static void
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g_apple_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp __unused, struct g_provider *pp)
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g_apple_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
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struct g_consumer *cp __unused, struct g_provider *pp)
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{
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struct g_apple_softc *mp;
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struct g_slicer *gsp;
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struct g_apple_softc *ms;
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gsp = gp->softc;
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ms = gsp->softc;
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mp = gsp->softc;
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g_slice_dumpconf(sb, indent, gp, cp, pp);
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if (indent == NULL) {
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sbuf_printf(sb, " sc %u hd %u alt %u",
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ms->nsects, ms->nheads, ms->nalt);
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if (pp != NULL) {
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if (indent == NULL)
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sbuf_printf(sb, " n %s ty %s",
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mp->apmpart[pp->index].am_name,
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mp->apmpart[pp->index].am_type);
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else {
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sbuf_printf(sb, "%s<name>%s</name>\n", indent,
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mp->apmpart[pp->index].am_name);
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sbuf_printf(sb, "%s<type>%s</type>\n", indent,
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mp->apmpart[pp->index].am_type);
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}
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}
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}
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#if 0
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static void
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g_apple_print()
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{
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/* XXX */
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}
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#endif
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static struct g_geom *
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g_apple_taste(struct g_class *mp, struct g_provider *pp, int flags)
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g_apple_taste(struct g_class *mp, struct g_provider *pp, int insist)
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{
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struct g_geom *gp;
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struct g_consumer *cp;
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int error, i;
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u_char *buf;
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int error, i, npart;
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struct g_apple_softc *ms;
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u_int sectorsize, pssize;
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off_t mediasize, o;
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struct g_slicer *gsp;
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struct apm_partition *apm;
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u_int sectorsize;
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u_char *buf;
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g_trace(G_T_TOPOLOGY, "g_apple_taste(%s,%s)", mp->name, pp->name);
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g_trace(G_T_TOPOLOGY, "apple_taste(%s,%s)", mp->name, pp->name);
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g_topology_assert();
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if (flags == G_TF_NORMAL &&
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!strcmp(pp->geom->class->name, APPLE_CLASS_NAME))
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return (NULL);
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gp = g_slice_new(mp, 8, pp, &cp, &ms, sizeof *ms, g_apple_start);
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gp = g_slice_new(mp, NAPMPART, pp, &cp, &ms, sizeof *ms, g_apple_start);
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if (gp == NULL)
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return (NULL);
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gsp = gp->softc;
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g_topology_unlock();
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gp->dumpconf = g_apple_dumpconf;
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npart = 0;
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while (1) { /* a trick to allow us to use break */
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if (gp->rank != 2 && flags == G_TF_NORMAL)
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if (gp->rank != 2 && insist == 0)
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break;
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sectorsize = cp->provider->sectorsize;
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if (sectorsize < 512)
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if (sectorsize != 512)
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break;
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gsp->frontstuff = 16 * sectorsize;
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mediasize = cp->provider->mediasize;
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/*
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* Reserve the driver record. XXX Should the partition
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* map be included ?
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*/
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gsp->frontstuff = sectorsize;
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buf = g_read_data(cp, 0, sectorsize, &error);
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if (buf == NULL || error != 0)
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break;
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/* The second last short is a magic number */
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if (g_dec_be2(buf + 0) != 0x4552)
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/*
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* Test for the sector 0 driver record signature, and
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* validate sector and disk size
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*/
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if (buf[0] != 'E' && buf[1] != 'R') {
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g_free(buf);
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break;
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g_hexdump(buf, 26);
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pssize = g_dec_be2(buf + 2);
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printf("sbSig: 0x%04x\n", g_dec_be2(buf + 0));
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printf("sbBlksize: %u\n", g_dec_be2(buf + 2));
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printf("sbBlkCount: %u\n", g_dec_be4(buf + 4));
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printf("sbDevType: %u\n", g_dec_be2(buf + 8));
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printf("sbDevId: %u\n", g_dec_be2(buf + 10));
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printf("sbData: %u\n", g_dec_be4(buf + 12));
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printf("sbDrvCount: %u\n", g_dec_be2(buf + 16));
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printf("ddBlock: %u\n", g_dec_be4(buf + 18));
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printf("ddSize: %u\n", g_dec_be2(buf + 22));
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printf("ddType: %u\n", g_dec_be2(buf + 24));
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}
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g_dec_drvrdesc(buf, ms);
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g_free(buf);
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i = 0;
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for (o = sectorsize; ; o += sectorsize) {
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buf = g_read_data(cp, o, sectorsize, &error);
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if (buf == NULL || error != 0)
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break;
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if (g_dec_be2(buf + 0) != 0x504d)
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break;
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g_hexdump(buf, 136);
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printf("pmSig: 0x%04x\n", g_dec_be2(buf + 0));
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printf("pmSigPad: 0x%04x\n", g_dec_be2(buf + 2));
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printf("pmMapBlkCnt: %u\n", g_dec_be4(buf + 4));
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printf("pmPyPartStart: %u\n", g_dec_be4(buf + 8));
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printf("pmPartBlkCnt: %u\n", g_dec_be4(buf + 12));
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printf("pmPartName:\n");
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g_hexdump(buf + 16, 32);
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printf("pmPartType:\n");
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g_hexdump(buf + 48, 32);
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printf("pmLgDataStart: %u\n", g_dec_be4(buf + 80));
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printf("pmDataCnt: %u\n", g_dec_be4(buf + 84));
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printf("pmPartStatus: 0x%x\n", g_dec_be4(buf + 88));
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printf("pmLgBootStart: %u\n", g_dec_be4(buf + 92));
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printf("pmBootSize: %u\n", g_dec_be4(buf + 96));
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printf("pmBootAddr: %u\n", g_dec_be4(buf + 100));
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printf("pmBootAddr2: %u\n", g_dec_be4(buf + 104));
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printf("pmBootEntry: %u\n", g_dec_be4(buf + 108));
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printf("pmBootEntry2: %u\n", g_dec_be4(buf + 112));
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printf("pmBootCksum: %u\n", g_dec_be4(buf + 116));
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printf("pmProcessor:\n");
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g_hexdump(buf + 120, 16);
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if (ms->dd_bsiz != 512) {
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break;
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}
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/*
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* Read in the first partition map
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*/
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buf = g_read_data(cp, sectorsize, sectorsize, &error);
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if (buf == NULL || error != 0)
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break;
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/*
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* Decode the first partition: it's another indication of
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* validity, as well as giving the size of the partition
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* map
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*/
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apm = &ms->apmpart[0];
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g_dec_apple_partition(buf, apm);
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g_free(buf);
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if (apm->am_sig[0] != 'P' || apm->am_sig[1] != 'M')
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break;
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ms->am_mapcnt0 = apm->am_mapcnt;
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buf = g_read_data(cp, 2 * sectorsize,
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(NAPMPART - 1) * sectorsize, &error);
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if (buf == NULL || error != 0)
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break;
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for (i = 1; i < NAPMPART; i++) {
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g_dec_apple_partition(buf + ((i - 1) * sectorsize),
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&ms->apmpart[i]);
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}
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npart = 0;
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for (i = 0; i < NAPMPART; i++) {
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apm = &ms->apmpart[i];
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/*
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* Validate partition sig and global mapcount
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*/
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if (apm->am_sig[0] != 'P' ||
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apm->am_sig[1] != 'M')
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continue;
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if (apm->am_mapcnt != ms->am_mapcnt0)
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continue;
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if (bootverbose) {
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printf("APM Slice %d (%s/%s) on %s:\n",
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i + 1, apm->am_name, apm->am_type,
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gp->name);
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/* g_apple_print(i, dp + i); */
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}
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npart++;
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g_topology_lock();
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g_slice_config(gp, i, G_SLICE_CONFIG_SET,
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(off_t)g_dec_be4(buf + 8) * pssize,
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(off_t)g_dec_be4(buf + 12) * pssize,
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(off_t)apm->am_start << 9ULL,
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(off_t)apm->am_partcnt << 9ULL,
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sectorsize,
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"%sp%d", pp->name, i);
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i++;
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"%ss%d", gp->name, i + 1);
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g_topology_unlock();
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}
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break;
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}
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g_topology_lock();
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g_access_rel(cp, -1, 0, 0);
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@ -188,7 +271,8 @@ g_apple_taste(struct g_class *mp, struct g_provider *pp, int flags)
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return (gp);
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}
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static struct g_class g_apple_class = {
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static struct g_class g_apple_class = {
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APPLE_CLASS_NAME,
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g_apple_taste,
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NULL,
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