diff --git a/sys/arch/arm/arm/disksubr.c b/sys/arch/arm/arm/disksubr.c new file mode 100644 index 000000000000..fb1fa734a175 --- /dev/null +++ b/sys/arch/arm/arm/disksubr.c @@ -0,0 +1,439 @@ +/* $NetBSD: disksubr.c,v 1.1 2001/03/04 05:06:51 matt Exp $ */ + +/* + * Copyright (c) 1998 Christopher G. Demetriou. All rights reserved. + * + * 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 Christopher G. Demetriou + * for the NetBSD Project. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + */ + +/* + * Copyright (c) 1982, 1986, 1988 Regents of the University of California. + * Copyright (c) 1995 Mark Brinicombe + * All rights reserved. + * + * 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 University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. + * + * from: @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91 + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * Attempt to read a disk label from a device + * using the indicated stategy routine. + * The label must be partly set up before this: + * secpercyl, secsize and anything required for a block i/o read + * operation in the driver's strategy/start routines + * must be filled in before calling us. + * + * If dos partition table requested, attempt to load it and + * find disklabel inside a DOS partition. Also, if bad block + * table needed, attempt to extract it as well. Return buffer + * for use in signalling errors if requested. + * + * Returns null on success and an error string on failure. + */ + +char * +readdisklabel(dev, strat, lp, osdep) + dev_t dev; + void (*strat) __P((struct buf *)); + struct disklabel *lp; + struct cpu_disklabel *osdep; +{ + struct buf *bp; + struct disklabel *dlp; + char *msg = NULL; + int cyl, netbsdpartoff, i; + +/* printf("Reading disclabel for %04x\n", dev);*/ + + /* minimal requirements for archtypal disk label */ + + if (lp->d_secsize == 0) + lp->d_secsize = DEV_BSIZE; + + if (lp->d_secperunit == 0) + lp->d_secperunit = 0x1fffffff; + + lp->d_npartitions = MAXPARTITIONS; + for (i = 0; i < MAXPARTITIONS; i++) { + if (i == RAW_PART) continue; + lp->d_partitions[i].p_offset = 0; + lp->d_partitions[i].p_fstype = FS_UNUSED; + lp->d_partitions[i].p_size = 0; + } + + if (lp->d_partitions[RAW_PART].p_size == 0) { + lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; + lp->d_partitions[RAW_PART].p_offset = 0; + lp->d_partitions[RAW_PART].p_size = 0x1fffffff; + } + + /* obtain buffer to probe drive with */ + + bp = geteblk((int)lp->d_secsize); + + /* request no partition relocation by driver on I/O operations */ + + bp->b_dev = dev; + + /* do netbsd partitions in the process of getting disklabel? */ + + netbsdpartoff = 0; + cyl = LABELSECTOR / lp->d_secpercyl; + + if (osdep) { + if (filecore_label_read(dev, strat,lp, osdep, &msg, &cyl, + &netbsdpartoff) || + mbr_label_read(dev, strat, lp, osdep, &msg, &cyl, + &netbsdpartoff)) { + if (msg != NULL) + goto done; + } else { + /* + * We didn't find anything we like; NetBSD native. + * netbsdpartoff and cyl should be unchanged. + */ + KASSERT(netbsdpartoff == 0); + KASSERT(cyl == (LABELSECTOR / lp->d_secpercyl)); + } + } + + /* next, dig out disk label */ + +/* printf("Reading disklabel addr=%08x\n", netbsdpartoff * DEV_BSIZE);*/ + + bp->b_blkno = netbsdpartoff + LABELSECTOR; + bp->b_cylinder = bp->b_blkno / lp->d_secpercyl; + bp->b_bcount = lp->d_secsize; + bp->b_flags |= B_READ; + (*strat)(bp); + + /* if successful, locate disk label within block and validate */ + + if (biowait(bp)) { + msg = "disk label I/O error"; + goto done; + } + for (dlp = (struct disklabel *)bp->b_data; + dlp <= (struct disklabel *)(bp->b_data + lp->d_secsize - sizeof(*dlp)); + dlp = (struct disklabel *)((char *)dlp + sizeof(long))) { + if (dlp->d_magic != DISKMAGIC || dlp->d_magic2 != DISKMAGIC) { + if (msg == NULL) + msg = "no disk label"; + } else if (dlp->d_npartitions > MAXPARTITIONS || + dkcksum(dlp) != 0) + msg = "disk label corrupted"; + else { + *lp = *dlp; + msg = NULL; + break; + } + } + + if (msg) + goto done; + + /* obtain bad sector table if requested and present */ + if (osdep && (lp->d_flags & D_BADSECT)) { + struct dkbad *bdp = &osdep->bad; + struct dkbad *db; + + i = 0; + do { + /* read a bad sector table */ + bp->b_flags &= ~(B_DONE); + bp->b_flags |= B_READ; + bp->b_blkno = lp->d_secperunit - lp->d_nsectors + i; + if (lp->d_secsize > DEV_BSIZE) + bp->b_blkno *= lp->d_secsize / DEV_BSIZE; + else + bp->b_blkno /= DEV_BSIZE / lp->d_secsize; + bp->b_bcount = lp->d_secsize; + bp->b_cylinder = lp->d_ncylinders - 1; + (*strat)(bp); + + /* if successful, validate, otherwise try another */ + if (biowait(bp)) { + msg = "bad sector table I/O error"; + } else { + db = (struct dkbad *)(bp->b_data); +#define DKBAD_MAGIC 0x4321 + if (db->bt_mbz == 0 + && db->bt_flag == DKBAD_MAGIC) { + msg = NULL; + *bdp = *db; + break; + } else + msg = "bad sector table corrupted"; + } + } while ((bp->b_flags & B_ERROR) && (i += 2) < 10 && + i < lp->d_nsectors); + } + +done: + brelse(bp); + return (msg); +} + + +/* + * Check new disk label for sensibility + * before setting it. + */ + +int +setdisklabel(olp, nlp, openmask, osdep) + struct disklabel *olp; + struct disklabel *nlp; + u_long openmask; + struct cpu_disklabel *osdep; +{ + int i; + struct partition *opp, *npp; + + /* sanity clause */ + + if (nlp->d_secpercyl == 0 || nlp->d_secsize == 0 + || (nlp->d_secsize % DEV_BSIZE) != 0) + return(EINVAL); + + /* special case to allow disklabel to be invalidated */ + + if (nlp->d_magic == 0xffffffff) { + *olp = *nlp; + return (0); + } + + if (nlp->d_magic != DISKMAGIC || nlp->d_magic2 != DISKMAGIC + || dkcksum(nlp) != 0) + return (EINVAL); + + /* XXX missing check if other acorn/dos partitions will be overwritten */ + + while (openmask != 0) { + i = ffs(openmask) - 1; + openmask &= ~(1 << i); + if (nlp->d_npartitions <= i) + return (EBUSY); + opp = &olp->d_partitions[i]; + npp = &nlp->d_partitions[i]; + if (npp->p_offset != opp->p_offset || npp->p_size < opp->p_size) + return (EBUSY); + /* + * Copy internally-set partition information + * if new label doesn't include it. XXX + */ + if (npp->p_fstype == FS_UNUSED && opp->p_fstype != FS_UNUSED) { + npp->p_fstype = opp->p_fstype; + npp->p_fsize = opp->p_fsize; + npp->p_frag = opp->p_frag; + npp->p_cpg = opp->p_cpg; + } + } + + nlp->d_checksum = 0; + nlp->d_checksum = dkcksum(nlp); + *olp = *nlp; + return (0); +} + + +/* + * Write disk label back to device after modification. + */ + +int +writedisklabel(dev, strat, lp, osdep) + dev_t dev; + void (*strat) __P((struct buf *)); + struct disklabel *lp; + struct cpu_disklabel *osdep; +{ + struct buf *bp; + struct disklabel *dlp; + int cyl, netbsdpartoff; + int error = 0, rv; + + /* get a buffer and initialize it */ + + bp = geteblk((int)lp->d_secsize); + bp->b_dev = dev; + + /* do netbsd partitions in the process of getting disklabel? */ + + netbsdpartoff = 0; + cyl = LABELSECTOR / lp->d_secpercyl; + + if (osdep) { + if ((rv = filecore_label_locate(dev, strat,lp, osdep, &cyl, + &netbsdpartoff)) != 0|| + (rv = mbr_label_locate(dev, strat, lp, osdep, &cyl, + &netbsdpartoff)) != 0) { + if (rv < 0) { + error = -rv; + goto done; + } + } else { + /* + * We didn't find anything we like; NetBSD native. + * netbsdpartoff and cyl should be unchanged. + */ + KASSERT(netbsdpartoff == 0); + KASSERT(cyl == (LABELSECTOR / lp->d_secpercyl)); + } + } + +/* writelabel: */ + +/* printf("writedisklabel: Reading disklabel addr=%08x\n", + netbsdpartoff * DEV_BSIZE);*/ + + /* next, dig out disk label */ + + bp->b_blkno = netbsdpartoff + LABELSECTOR; + bp->b_cylinder = cyl; + bp->b_bcount = lp->d_secsize; + bp->b_flags &= ~(B_DONE); + bp->b_flags |= B_READ; + (*strat)(bp); + + /* if successful, locate disk label within block and validate */ + + if ((error = biowait(bp))) + goto done; + for (dlp = (struct disklabel *)bp->b_data; + dlp <= (struct disklabel *)(bp->b_data + lp->d_secsize - sizeof(*dlp)); + dlp = (struct disklabel *)((char *)dlp + sizeof(long))) { + if (dlp->d_magic == DISKMAGIC && dlp->d_magic2 == DISKMAGIC && + dkcksum(dlp) == 0) { + *dlp = *lp; + bp->b_flags &= ~(B_READ|B_DONE); + bp->b_flags |= B_WRITE; + (*strat)(bp); + error = biowait(bp); + goto done; + } + } + + error = ESRCH; + +done: + brelse(bp); + return (error); +} + + +/* + * Determine the size of the transfer, and make sure it is + * within the boundaries of the partition. Adjust transfer + * if needed, and signal errors or early completion. + */ +int +bounds_check_with_label(bp, lp, wlabel) + struct buf *bp; + struct disklabel *lp; + int wlabel; +{ + struct partition *p = lp->d_partitions + DISKPART(bp->b_dev); + int labelsector = lp->d_partitions[0].p_offset + LABELSECTOR; + int sz; + + sz = howmany(bp->b_bcount, lp->d_secsize); + + if (bp->b_blkno + sz > p->p_size) { + sz = p->p_size - bp->b_blkno; + if (sz == 0) { + /* If exactly at end of disk, return EOF. */ + bp->b_resid = bp->b_bcount; + goto done; + } + if (sz < 0) { + /* If past end of disk, return EINVAL. */ + bp->b_error = EINVAL; + goto bad; + } + /* Otherwise, truncate request. */ + bp->b_bcount = sz << DEV_BSHIFT; + } + + /* Overwriting disk label? */ + if (bp->b_blkno + p->p_offset <= labelsector && +#if LABELSECTOR != 0 + bp->b_blkno + p->p_offset + sz > labelsector && +#endif + (bp->b_flags & B_READ) == 0 && !wlabel) { + bp->b_error = EROFS; + goto bad; + } + + /* calculate cylinder for disksort to order transfers with */ + bp->b_cylinder = (bp->b_blkno + p->p_offset) / + (lp->d_secsize / DEV_BSIZE) / lp->d_secpercyl; + return (1); + +bad: + bp->b_flags |= B_ERROR; +done: + return (0); +} + +/* End of disksubr.c */ diff --git a/sys/arch/arm/arm/disksubr_acorn.c b/sys/arch/arm/arm/disksubr_acorn.c new file mode 100644 index 000000000000..b0222bf6900c --- /dev/null +++ b/sys/arch/arm/arm/disksubr_acorn.c @@ -0,0 +1,358 @@ +/* $NetBSD: disksubr_acorn.c,v 1.1 2001/03/04 05:06:51 matt Exp $ */ + +/* + * Copyright (c) 1998 Christopher G. Demetriou. All rights reserved. + * + * 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 Christopher G. Demetriou + * for the NetBSD Project. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + */ + +/* + * Copyright (c) 1982, 1986, 1988 Regents of the University of California. + * Copyright (c) 1995 Mark Brinicombe + * All rights reserved. + * + * 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 University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. + * + * from: @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91 + */ + +#include +#include +#include +#include + +static int filecore_checksum __P((u_char *)); + +/* + * static int filecore_checksum(u_char *bootblock) + * + * Calculates the filecore boot block checksum. This is used to validate + * a filecore boot block on the disk. If a boot block is validated then + * it is used to locate the partition table. If the boot block is not + * validated, it is assumed that the whole disk is NetBSD. + * + * The basic algorithm is: + * + * for (each byte in block, excluding checksum) { + * sum += byte; + * if (sum > 255) + * sum -= 255; + * } + * + * That's equivalent to summing all of the bytes in the block + * (excluding the checksum byte, of course), then calculating the + * checksum as "cksum = sum - ((sum - 1) / 255) * 255)". That + * expression may or may not yield a faster checksum function, + * but it's easier to reason about. + * + * Note that if you have a block filled with bytes of a single + * value "X" (regardless of that value!) and calculate the cksum + * of the block (excluding the checksum byte), you will _always_ + * end up with a checksum of X. (Do the math; that can be derived + * from the checksum calculation function!) That means that + * blocks which contain bytes which all have the same value will + * always checksum properly. That's a _very_ unlikely occurence + * (probably impossible, actually) for a valid filecore boot block, + * so we treat such blocks as invalid. + */ +static int +filecore_checksum(bootblock) + u_char *bootblock; +{ + u_char byte0, accum_diff; + u_int sum; + int i; + + sum = 0; + accum_diff = 0; + byte0 = bootblock[0]; + + /* + * Sum the contents of the block, keeping track of whether + * or not all bytes are the same. If 'accum_diff' ends up + * being zero, all of the bytes are, in fact, the same. + */ + for (i = 0; i < 511; ++i) { + sum += bootblock[i]; + accum_diff |= bootblock[i] ^ byte0; + } + + /* + * Check to see if the checksum byte is the same as the + * rest of the bytes, too. (Note that if all of the bytes + * are the same except the checksum, a checksum compare + * won't succeed, but that's not our problem.) + */ + accum_diff |= bootblock[i] ^ byte0; + + /* All bytes in block are the same; call it invalid. */ + if (accum_diff == 0) + return (-1); + + return (sum - ((sum - 1) / 255) * 255); +} + + +int +filecore_label_read(dev, strat, lp, osdep, msgp, cylp, netbsd_label_offp) + dev_t dev; + void (*strat) __P((struct buf *)); + struct disklabel *lp; + struct cpu_disklabel *osdep; + char **msgp; + int *cylp, *netbsd_label_offp; +{ + struct filecore_bootblock *bb; + int heads; + int sectors; + int rv = 1; + int cyl, netbsdpartoff; + struct buf *bp; + +#ifdef __GNUC__ + netbsdpartoff = 0; /* XXX -Wuninitialized */ +#endif + + /* get a buffer and initialize it */ + bp = geteblk((int)lp->d_secsize); + bp->b_dev = dev; + + /* read the Acorn filecore boot block */ + + bp->b_blkno = FILECORE_BOOT_SECTOR; + bp->b_bcount = lp->d_secsize; + bp->b_flags |= B_READ; + bp->b_cylinder = bp->b_blkno / lp->d_secpercyl; + (*strat)(bp); + + /* + * if successful, validate boot block and + * locate partition table + */ + + if (biowait(bp)) { + *msgp = "filecore boot block I/O error"; + goto out; + } + + bb = (struct filecore_bootblock *)bp->b_data; + + /* Validate boot block */ + + if (bb->checksum != filecore_checksum((u_char *)bb)) { + /* + * Invalid boot block so lets assume the + * entire disc is NetBSD + */ + rv = 0; + goto out; + } + + /* Get some information from the boot block */ + + cyl = bb->partition_cyl_low + (bb->partition_cyl_high << 8); + + heads = bb->heads; + sectors = bb->secspertrack; + + /* Do we have a NETBSD partition table ? */ + + if (bb->partition_type == PARTITION_FORMAT_RISCBSD) { +/* printf("heads = %d nsectors = %d\n", heads, sectors);*/ + netbsdpartoff = cyl * heads * sectors; + } else if (bb->partition_type == PARTITION_FORMAT_RISCIX) { + struct riscix_partition_table *rpt; + int loop; + + /* + * We have a RISCiX partition table :-( groan + * + * Read the RISCiX partition table and see if + * there is a NetBSD partition + */ + + bp->b_blkno = cyl * heads * sectors; +/* printf("Found RiscIX partition table @ %08x\n", + bp->b_blkno);*/ + bp->b_cylinder = bp->b_blkno / lp->d_secpercyl; + bp->b_bcount = lp->d_secsize; + bp->b_flags &= ~(B_DONE); + bp->b_flags |= B_READ; + (*strat)(bp); + + /* + * if successful, locate disk label within block + * and validate + */ + + if (biowait(bp)) { + *msgp = "disk label I/O error"; + goto out; + } + + rpt = (struct riscix_partition_table *)bp->b_data; +/* for (loop = 0; loop < NRISCIX_PARTITIONS; ++loop) + printf("p%d: %16s %08x %08x %08x\n", loop, + rpt->partitions[loop].rp_name, + rpt->partitions[loop].rp_start, + rpt->partitions[loop].rp_length, + rpt->partitions[loop].rp_type); +*/ + for (loop = 0; loop < NRISCIX_PARTITIONS; ++loop) { + if (strcmp(rpt->partitions[loop].rp_name, + "RiscBSD") == 0 || + strcmp(rpt->partitions[loop].rp_name, + "NetBSD") == 0 || + strcmp(rpt->partitions[loop].rp_name, + "Empty:") == 0) { + netbsdpartoff = + rpt->partitions[loop].rp_start; + break; + } + } + if (loop == NRISCIX_PARTITIONS) { + *msgp = "NetBSD partition identifier string not found."; + goto out; + } + } else { + *msgp = "Invalid partition format"; + goto out; + } + + *cylp = cyl; + *netbsd_label_offp = netbsdpartoff; + *msgp = NULL; +out: + brelse(bp); + return (rv); +} + + +int +filecore_label_locate(dev, strat, lp, osdep, cylp, netbsd_label_offp) + dev_t dev; + void (*strat) __P((struct buf *)); + struct disklabel *lp; + struct cpu_disklabel *osdep; + int *cylp, *netbsd_label_offp; +{ + struct filecore_bootblock *bb; + int heads; + int sectors; + int rv; + int cyl, netbsdpartoff; + struct buf *bp; + + /* get a buffer and initialize it */ + bp = geteblk((int)lp->d_secsize); + bp->b_dev = dev; + + /* read the filecore boot block */ + +/* printf("writedisklabel: Reading boot block\n");*/ + + bp->b_blkno = FILECORE_BOOT_SECTOR; + bp->b_bcount = lp->d_secsize; + bp->b_flags |= B_READ; + bp->b_cylinder = bp->b_blkno / lp->d_secpercyl; + (*strat)(bp); + + /* + * if successful, validate boot block and locate + * partition table + */ + + if ((rv = biowait(bp)) != 0) { + rv = -rv; + goto out; + } + + bb = (struct filecore_bootblock *)bp->b_data; + rv = 1; + + /* Validate boot block */ + + if (bb->checksum != filecore_checksum((u_char *)bb)) { + /* + * Invalid boot block so lets assume the + * entire disc is NetBSD + */ + +/* printf("writedisklabel: Invalid filecore boot block (incorrect checksum)\n");*/ + rv = 0; + goto out; + } + + /* Do we have a NetBSD partition ? */ + + if (bb->partition_type != PARTITION_FORMAT_RISCBSD) { + printf("writedisklabel: Invalid partition format\n"); + rv = -1; + goto out; + } + + cyl = bb->partition_cyl_low + (bb->partition_cyl_high << 8); + + heads = bb->heads; + sectors = bb->secspertrack; + + /*printf("heads = %d nsectors = %d\n", heads, sectors);*/ + + netbsdpartoff = cyl * heads * sectors; + + *cylp = cyl; + *netbsd_label_offp = netbsdpartoff; +out: + brelse(bp); + return (rv); +} diff --git a/sys/arch/arm/arm/disksubr_mbr.c b/sys/arch/arm/arm/disksubr_mbr.c new file mode 100644 index 000000000000..c1ecf5b8a0f1 --- /dev/null +++ b/sys/arch/arm/arm/disksubr_mbr.c @@ -0,0 +1,276 @@ +/* $NetBSD: disksubr_mbr.c,v 1.1 2001/03/04 05:06:51 matt Exp $ */ + +/* + * Copyright (c) 1998 Christopher G. Demetriou. All rights reserved. + * + * 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 Christopher G. Demetriou + * for the NetBSD Project. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + */ + +/* + * Copyright (c) 1982, 1986, 1988 Regents of the University of California. + * All rights reserved. + * + * 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 University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. + * + * @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91 + */ + +/* + * From i386 disklabel.c rev 1.29, with cleanups and modifications to + * make it easier to use on the arm32 and to use as MI code (not quite + * clean enough, yet). + */ + +#include +#include +#include +#include + +#include "opt_mbr.h" + +#define MBRSIGOFS 0x1fe +static char mbrsig[2] = {0x55, 0xaa}; + +int fat_types[] = { + MBR_PTYPE_FAT12, MBR_PTYPE_FAT16S, + MBR_PTYPE_FAT16B, MBR_PTYPE_FAT32, + MBR_PTYPE_FAT32L, MBR_PTYPE_FAT16L, + -1 +}; + +int +mbr_label_read(dev, strat, lp, osdep, msgp, cylp, netbsd_label_offp) + dev_t dev; + void (*strat) __P((struct buf *)); + struct disklabel *lp; + struct cpu_disklabel *osdep; + char **msgp; + int *cylp, *netbsd_label_offp; +{ + struct mbr_partition *mbrp; + struct partition *pp; + int cyl, mbrpartoff, i, *ip; + struct buf *bp; + int rv = 1; + + /* get a buffer and initialize it */ + bp = geteblk((int)lp->d_secsize); + bp->b_dev = dev; + + /* In case nothing sets them */ + mbrpartoff = 0; + cyl = LABELSECTOR / lp->d_secpercyl; + + mbrp = osdep->mbrparts; + + /* read master boot record */ + bp->b_blkno = MBR_BBSECTOR; + bp->b_bcount = lp->d_secsize; + bp->b_flags |= B_READ; + bp->b_cylinder = MBR_BBSECTOR / lp->d_secpercyl; + (*strat)(bp); + + /* if successful, wander through dos partition table */ + if (biowait(bp)) { + *msgp = "dos partition I/O error"; + goto out; + } else { + struct mbr_partition *ourmbrp = NULL; + + /* XXX "there has to be a better check than this." */ + if (bcmp(bp->b_data + MBRSIGOFS, mbrsig, sizeof(mbrsig))) { + rv = 0; + goto out; + } + + /* XXX how do we check veracity/bounds of this? */ + bcopy(bp->b_data + MBR_PARTOFF, mbrp, + NMBRPART * sizeof(*mbrp)); + + /* look for NetBSD partition */ + ourmbrp = NULL; + for (i = 0; !ourmbrp && i < NMBRPART; i++) { + if (mbrp[i].mbrp_typ == MBR_PTYPE_NETBSD) + ourmbrp = &mbrp[i]; + } +#ifdef COMPAT_386BSD_MBRPART + /* didn't find it -- look for 386BSD partition */ + for (i = 0; !ourmbrp && i < NMBRPART; i++) { + if (mbrp[i].mbrp_typ == MBR_PTYPE_386BSD) { + printf("WARNING: old BSD partition ID!\n"); + ourmbrp = &mbrp[i]; + break; + } + } +#endif + for (i = 0; i < NMBRPART; i++, mbrp++) { + + strncpy(lp->d_packname, "fictitious-MBR", + sizeof lp->d_packname); + + /* Install in partition e, f, g, or h. */ + pp = &lp->d_partitions['e' - 'a' + i]; + pp->p_offset = mbrp->mbrp_start; + pp->p_size = mbrp->mbrp_size; + for (ip = fat_types; *ip != -1; ip++) { + if (mbrp->mbrp_typ == *ip) + pp->p_fstype = FS_MSDOS; + } + if (mbrp->mbrp_typ == MBR_PTYPE_LNXEXT2) + pp->p_fstype = FS_EX2FS; + + /* is this ours? */ + if (mbrp == ourmbrp) { + /* need sector address for SCSI/IDE, + cylinder for ESDI/ST506/RLL */ + mbrpartoff = mbrp->mbrp_start; + cyl = MBR_PCYL(mbrp->mbrp_scyl, mbrp->mbrp_ssect); + +#ifdef __i386__ /* XXX? */ + /* update disklabel with details */ + lp->d_partitions[2].p_size = + mbrp->mbrp_size; + lp->d_partitions[2].p_offset = + mbrp->mbrp_start; + lp->d_ntracks = mbrp->mbrp_ehd + 1; + lp->d_nsectors = MBR_PSECT(mbrp->mbrp_esect); + lp->d_secpercyl = + lp->d_ntracks * lp->d_nsectors; +#endif + } + } + lp->d_npartitions = 'e' - 'a' + i; + } + + *cylp = cyl; + *netbsd_label_offp = mbrpartoff; + *msgp = NULL; +out: + brelse(bp); + return (rv); +} + +int +mbr_label_locate(dev, strat, lp, osdep, cylp, netbsd_label_offp) + dev_t dev; + void (*strat) __P((struct buf *)); + struct disklabel *lp; + struct cpu_disklabel *osdep; + int *cylp, *netbsd_label_offp; +{ + struct mbr_partition *mbrp; + int cyl, mbrpartoff, i; + struct mbr_partition *ourmbrp = NULL; + struct buf *bp; + int rv = 1; + + /* get a buffer and initialize it */ + bp = geteblk((int)lp->d_secsize); + bp->b_dev = dev; + + /* do MBR partitions in the process of getting disklabel? */ + mbrpartoff = 0; + cyl = LABELSECTOR / lp->d_secpercyl; + + mbrp = osdep->mbrparts; + + /* read master boot record */ + bp->b_blkno = MBR_BBSECTOR; + bp->b_bcount = lp->d_secsize; + bp->b_flags |= B_READ; + bp->b_cylinder = MBR_BBSECTOR / lp->d_secpercyl; + (*strat)(bp); + + if ((rv = biowait(bp)) != 0) { + rv = -rv; + goto out; + } + + if (bcmp(bp->b_data + MBRSIGOFS, mbrsig, sizeof(mbrsig))) { + rv = 0; + goto out; + } + + /* XXX how do we check veracity/bounds of this? */ + bcopy(bp->b_data + MBR_PARTOFF, mbrp, NMBRPART * sizeof(*mbrp)); + + /* look for NetBSD partition */ + ourmbrp = NULL; + for (i = 0; !ourmbrp && i < NMBRPART; i++) { + if (mbrp[i].mbrp_typ == MBR_PTYPE_NETBSD) + ourmbrp = &mbrp[i]; + } +#ifdef COMPAT_386BSD_MBRPART + /* didn't find it -- look for 386BSD partition */ + for (i = 0; !ourmbrp && i < NMBRPART; i++) { + if (mbrp[i].mbrp_typ == MBR_PTYPE_386BSD) { + printf("WARNING: old BSD partition ID!\n"); + ourmbrp = &mbrp[i]; + } + } +#endif + if (!ourmbrp) { + rv = 0; /* XXX allow easy clobber? */ + goto out; + } + + /* need sector address for SCSI/IDE, cylinder for ESDI/ST506/RLL */ + mbrpartoff = ourmbrp->mbrp_start; + cyl = MBR_PCYL(ourmbrp->mbrp_scyl, ourmbrp->mbrp_ssect); + + *cylp = cyl; + *netbsd_label_offp = mbrpartoff; +out: + brelse(bp); + return (rv); +}