projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| bee5f8de | 1 | /* |
| 030a8056 KB |
2 | * Copyright (c) 1990, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. | |
| bee5f8de MH |
4 | * |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * Van Jacobson of Lawrence Berkeley Laboratory. | |
| 7 | * | |
| 8 | * %sccs.include.redist.c% | |
| 9 | * | |
| 030a8056 | 10 | * @(#)sd_compat.c 8.1 (Berkeley) %G% |
| bee5f8de MH |
11 | */ |
| 12 | ||
| 13 | /* | |
| 14 | * Compatibility for SCSI disks without labels. | |
| 15 | */ | |
| 16 | #include "sd.h" | |
| 17 | #if NSD > 0 | |
| 18 | ||
| 19 | #include <sys/param.h> | |
| 20 | #include <sys/disklabel.h> | |
| 21 | #include <hp/dev/device.h> | |
| 22 | #include <hp300/dev/sdvar.h> | |
| 23 | ||
| 24 | /* | |
| 25 | * Since the SCSI standard tends to hide the disk structure, we define | |
| 26 | * partitions in terms of DEV_BSIZE blocks. The default partition table | |
| 27 | * (for an unlabeled disk) reserves 512K for a boot area, has an 8 meg | |
| 28 | * root (A) and 32 meg of swap (B). The rest of the space on the drive | |
| 29 | * goes in the G partition. As usual, the C partition covers the entire | |
| 30 | * disk (including the boot area). | |
| 31 | * | |
| 32 | * We also define the D, E, F and H partitions as an alternative to B and G. | |
| 33 | * D is 48Mb, starts after A and is intended for swapping. | |
| 34 | * E is 50Mb, starts after D and is intended for /usr. | |
| 35 | * F starts after E and is what ever is left. | |
| 36 | * H starts after D and is what ever is left (i.e. combo of E and F). | |
| 37 | */ | |
| 38 | struct partition sddefaultpart[] = { | |
| 39 | { 16384, 1024, 1024, FS_BSDFFS, 8 }, | |
| 40 | { 65536, 17408, 0, FS_SWAP, 0 }, | |
| 7677f574 | 41 | { 0, 0, 0, FS_BOOT, 0 }, |
| bee5f8de MH |
42 | { 98304, 17408, 0, FS_SWAP, 0 }, |
| 43 | { 102400, 115712, 1024, FS_BSDFFS, 8 }, | |
| 44 | { 0, 218112, 1024, FS_BSDFFS, 8 }, | |
| 45 | { 0, 82944, 1024, FS_BSDFFS, 8 }, | |
| 46 | { 0, 115712, 1024, FS_BSDFFS, 8 } | |
| 47 | }; | |
| 48 | int sdnumdefaultpart = sizeof(sddefaultpart)/sizeof(sddefaultpart[0]); | |
| 49 | ||
| 50 | extern struct sd_softc sd_softc[]; | |
| 51 | ||
| 52 | sdmakedisklabel(unit, lp) | |
| 53 | int unit; | |
| 54 | register struct disklabel *lp; | |
| 55 | { | |
| 56 | register struct sd_softc *sc = &sd_softc[unit]; | |
| 57 | register struct partition *pi, *dpi; | |
| 58 | register int dcount; | |
| 59 | ||
| 60 | lp->d_secperunit = sc->sc_blks; | |
| 61 | lp->d_rpm = 3600; | |
| 62 | lp->d_interleave = 1; | |
| 63 | if (sc->sc_flags & SDF_RMEDIA) | |
| 64 | lp->d_flags |= D_REMOVABLE; | |
| 65 | lp->d_npartitions = sdnumdefaultpart; | |
| 66 | ||
| 67 | pi = lp->d_partitions; | |
| 68 | dpi = sddefaultpart; | |
| 69 | dcount = sdnumdefaultpart; | |
| 70 | while (dcount-- > 0) | |
| 71 | *pi++ = *dpi++; | |
| 72 | ||
| 73 | pi = lp->d_partitions; | |
| 74 | ||
| 75 | /* | |
| 76 | * C gets everything | |
| 77 | */ | |
| 78 | pi[2].p_size = sc->sc_blks; | |
| 79 | /* | |
| 80 | * G gets from end of B to end of disk | |
| 81 | */ | |
| 82 | pi[6].p_size = sc->sc_blks - pi[6].p_offset; | |
| 83 | /* | |
| 84 | * H gets from end of D to end of disk | |
| 85 | */ | |
| 86 | pi[7].p_size = sc->sc_blks - pi[7].p_offset; | |
| 87 | /* | |
| 88 | * If disk is big enough, define E and F | |
| 89 | */ | |
| 90 | if (sc->sc_blks > pi[5].p_offset) | |
| 91 | pi[5].p_size = sc->sc_blks - pi[5].p_offset; | |
| 92 | else { | |
| 93 | pi[4].p_offset = pi[4].p_size = 0; | |
| 94 | pi[5].p_offset = pi[5].p_size = 0; | |
| 95 | } | |
| 96 | } | |
| 97 | #endif |