Index: stable/10/sys/boot/i386/zfsboot/zfsboot.c =================================================================== --- stable/10/sys/boot/i386/zfsboot/zfsboot.c (revision 294479) +++ stable/10/sys/boot/i386/zfsboot/zfsboot.c (revision 294480) @@ -1,836 +1,836 @@ /*- * Copyright (c) 1998 Robert Nordier * All rights reserved. * * Redistribution and use in source and binary forms are freely * permitted provided that the above copyright notice and this * paragraph and the following disclaimer are duplicated in all * such forms. * * This software is provided "AS IS" and without any express or * implied warranties, including, without limitation, the implied * warranties of merchantability and fitness for a particular * purpose. */ #include __FBSDID("$FreeBSD$"); #include #include #include #ifdef GPT #include #endif #include #include #include #include #include #include #include #include #include #include "lib.h" #include "rbx.h" #include "drv.h" #include "util.h" #include "cons.h" #include "bootargs.h" #include "libzfs.h" #define PATH_DOTCONFIG "/boot.config" #define PATH_CONFIG "/boot/config" #define PATH_BOOT3 "/boot/zfsloader" #define PATH_KERNEL "/boot/kernel/kernel" #define ARGS 0x900 #define NOPT 14 #define NDEV 3 #define BIOS_NUMDRIVES 0x475 #define DRV_HARD 0x80 #define DRV_MASK 0x7f #define TYPE_AD 0 #define TYPE_DA 1 #define TYPE_MAXHARD TYPE_DA #define TYPE_FD 2 extern uint32_t _end; #ifdef GPT static const uuid_t freebsd_zfs_uuid = GPT_ENT_TYPE_FREEBSD_ZFS; #endif static const char optstr[NOPT] = "DhaCcdgmnpqrsv"; /* Also 'P', 'S' */ static const unsigned char flags[NOPT] = { RBX_DUAL, RBX_SERIAL, RBX_ASKNAME, RBX_CDROM, RBX_CONFIG, RBX_KDB, RBX_GDB, RBX_MUTE, RBX_NOINTR, RBX_PAUSE, RBX_QUIET, RBX_DFLTROOT, RBX_SINGLE, RBX_VERBOSE }; uint32_t opts; static const char *const dev_nm[NDEV] = {"ad", "da", "fd"}; static const unsigned char dev_maj[NDEV] = {30, 4, 2}; static char cmd[512]; static char cmddup[512]; static char kname[1024]; static char rootname[256]; static int comspeed = SIOSPD; static struct bootinfo bootinfo; static uint32_t bootdev; static struct zfs_boot_args zfsargs; static struct zfsmount zfsmount; vm_offset_t high_heap_base; uint32_t bios_basemem, bios_extmem, high_heap_size; static struct bios_smap smap; /* * The minimum amount of memory to reserve in bios_extmem for the heap. */ #define HEAP_MIN (3 * 1024 * 1024) static char *heap_next; static char *heap_end; /* Buffers that must not span a 64k boundary. */ #define READ_BUF_SIZE 8192 struct dmadat { char rdbuf[READ_BUF_SIZE]; /* for reading large things */ char secbuf[READ_BUF_SIZE]; /* for MBR/disklabel */ }; static struct dmadat *dmadat; void exit(int); static void load(void); static int parse(void); static void bios_getmem(void); static void * malloc(size_t n) { char *p = heap_next; if (p + n > heap_end) { printf("malloc failure\n"); for (;;) ; return 0; } heap_next += n; return p; } static char * strdup(const char *s) { char *p = malloc(strlen(s) + 1); strcpy(p, s); return p; } #include "zfsimpl.c" /* * Read from a dnode (which must be from a ZPL filesystem). */ static int zfs_read(spa_t *spa, const dnode_phys_t *dnode, off_t *offp, void *start, size_t size) { const znode_phys_t *zp = (const znode_phys_t *) dnode->dn_bonus; size_t n; int rc; n = size; if (*offp + n > zp->zp_size) n = zp->zp_size - *offp; rc = dnode_read(spa, dnode, *offp, start, n); if (rc) return (-1); *offp += n; return (n); } /* * Current ZFS pool */ static spa_t *spa; static spa_t *primary_spa; static vdev_t *primary_vdev; /* * A wrapper for dskread that doesn't have to worry about whether the * buffer pointer crosses a 64k boundary. */ static int vdev_read(vdev_t *vdev, void *priv, off_t off, void *buf, size_t bytes) { char *p; daddr_t lba; unsigned int nb; struct dsk *dsk = (struct dsk *) priv; if ((off & (DEV_BSIZE - 1)) || (bytes & (DEV_BSIZE - 1))) return -1; p = buf; lba = off / DEV_BSIZE; lba += dsk->start; while (bytes > 0) { nb = bytes / DEV_BSIZE; if (nb > READ_BUF_SIZE / DEV_BSIZE) nb = READ_BUF_SIZE / DEV_BSIZE; if (drvread(dsk, dmadat->rdbuf, lba, nb)) return -1; memcpy(p, dmadat->rdbuf, nb * DEV_BSIZE); p += nb * DEV_BSIZE; lba += nb; bytes -= nb * DEV_BSIZE; } return 0; } static int xfsread(const dnode_phys_t *dnode, off_t *offp, void *buf, size_t nbyte) { if ((size_t)zfs_read(spa, dnode, offp, buf, nbyte) != nbyte) { printf("Invalid format\n"); return -1; } return 0; } static void bios_getmem(void) { uint64_t size; /* Parse system memory map */ v86.ebx = 0; do { v86.ctl = V86_FLAGS; v86.addr = 0x15; /* int 0x15 function 0xe820*/ v86.eax = 0xe820; v86.ecx = sizeof(struct bios_smap); v86.edx = SMAP_SIG; v86.es = VTOPSEG(&smap); v86.edi = VTOPOFF(&smap); v86int(); - if ((v86.efl & 1) || (v86.eax != SMAP_SIG)) + if (V86_CY(v86.efl) || (v86.eax != SMAP_SIG)) break; /* look for a low-memory segment that's large enough */ if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base == 0) && (smap.length >= (512 * 1024))) bios_basemem = smap.length; /* look for the first segment in 'extended' memory */ if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base == 0x100000)) { bios_extmem = smap.length; } /* * Look for the largest segment in 'extended' memory beyond * 1MB but below 4GB. */ if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base > 0x100000) && (smap.base < 0x100000000ull)) { size = smap.length; /* * If this segment crosses the 4GB boundary, truncate it. */ if (smap.base + size > 0x100000000ull) size = 0x100000000ull - smap.base; if (size > high_heap_size) { high_heap_size = size; high_heap_base = smap.base; } } } while (v86.ebx != 0); /* Fall back to the old compatibility function for base memory */ if (bios_basemem == 0) { v86.ctl = 0; v86.addr = 0x12; /* int 0x12 */ v86int(); bios_basemem = (v86.eax & 0xffff) * 1024; } /* Fall back through several compatibility functions for extended memory */ if (bios_extmem == 0) { v86.ctl = V86_FLAGS; v86.addr = 0x15; /* int 0x15 function 0xe801*/ v86.eax = 0xe801; v86int(); - if (!(v86.efl & 1)) { + if (!V86_CY(v86.efl)) { bios_extmem = ((v86.ecx & 0xffff) + ((v86.edx & 0xffff) * 64)) * 1024; } } if (bios_extmem == 0) { v86.ctl = 0; v86.addr = 0x15; /* int 0x15 function 0x88*/ v86.eax = 0x8800; v86int(); bios_extmem = (v86.eax & 0xffff) * 1024; } /* * If we have extended memory and did not find a suitable heap * region in the SMAP, use the last 3MB of 'extended' memory as a * high heap candidate. */ if (bios_extmem >= HEAP_MIN && high_heap_size < HEAP_MIN) { high_heap_size = HEAP_MIN; high_heap_base = bios_extmem + 0x100000 - HEAP_MIN; } } /* * Try to detect a device supported by the legacy int13 BIOS */ static int int13probe(int drive) { v86.ctl = V86_FLAGS; v86.addr = 0x13; v86.eax = 0x800; v86.edx = drive; v86int(); - if (!(v86.efl & 0x1) && /* carry clear */ + if (!V86_CY(v86.efl) && /* carry clear */ ((v86.edx & 0xff) != (drive & DRV_MASK))) { /* unit # OK */ if ((v86.ecx & 0x3f) == 0) { /* absurd sector size */ return(0); /* skip device */ } return (1); } return(0); } /* * We call this when we find a ZFS vdev - ZFS consumes the dsk * structure so we must make a new one. */ static struct dsk * copy_dsk(struct dsk *dsk) { struct dsk *newdsk; newdsk = malloc(sizeof(struct dsk)); *newdsk = *dsk; return (newdsk); } static void probe_drive(struct dsk *dsk) { #ifdef GPT struct gpt_hdr hdr; struct gpt_ent *ent; daddr_t slba, elba; unsigned part, entries_per_sec; #endif struct dos_partition *dp; char *sec; unsigned i; /* * If we find a vdev on the whole disk, stop here. Otherwise dig * out the partition table and probe each slice/partition * in turn for a vdev. */ if (vdev_probe(vdev_read, dsk, NULL) == 0) return; sec = dmadat->secbuf; dsk->start = 0; #ifdef GPT /* * First check for GPT. */ if (drvread(dsk, sec, 1, 1)) { return; } memcpy(&hdr, sec, sizeof(hdr)); if (memcmp(hdr.hdr_sig, GPT_HDR_SIG, sizeof(hdr.hdr_sig)) != 0 || hdr.hdr_lba_self != 1 || hdr.hdr_revision < 0x00010000 || hdr.hdr_entsz < sizeof(*ent) || DEV_BSIZE % hdr.hdr_entsz != 0) { goto trymbr; } /* * Probe all GPT partitions for the presense of ZFS pools. We * return the spa_t for the first we find (if requested). This * will have the effect of booting from the first pool on the * disk. */ entries_per_sec = DEV_BSIZE / hdr.hdr_entsz; slba = hdr.hdr_lba_table; elba = slba + hdr.hdr_entries / entries_per_sec; while (slba < elba) { dsk->start = 0; if (drvread(dsk, sec, slba, 1)) return; for (part = 0; part < entries_per_sec; part++) { ent = (struct gpt_ent *)(sec + part * hdr.hdr_entsz); if (memcmp(&ent->ent_type, &freebsd_zfs_uuid, sizeof(uuid_t)) == 0) { dsk->start = ent->ent_lba_start; if (vdev_probe(vdev_read, dsk, NULL) == 0) { /* * This slice had a vdev. We need a new dsk * structure now since the vdev now owns this one. */ dsk = copy_dsk(dsk); } } } slba++; } return; trymbr: #endif if (drvread(dsk, sec, DOSBBSECTOR, 1)) return; dp = (void *)(sec + DOSPARTOFF); for (i = 0; i < NDOSPART; i++) { if (!dp[i].dp_typ) continue; dsk->start = dp[i].dp_start; if (vdev_probe(vdev_read, dsk, NULL) == 0) { /* * This slice had a vdev. We need a new dsk structure now * since the vdev now owns this one. */ dsk = copy_dsk(dsk); } } } int main(void) { int autoboot, i; dnode_phys_t dn; off_t off; struct dsk *dsk; dmadat = (void *)(roundup2(__base + (int32_t)&_end, 0x10000) - __base); bios_getmem(); if (high_heap_size > 0) { heap_end = PTOV(high_heap_base + high_heap_size); heap_next = PTOV(high_heap_base); } else { heap_next = (char *) dmadat + sizeof(*dmadat); heap_end = (char *) PTOV(bios_basemem); } dsk = malloc(sizeof(struct dsk)); dsk->drive = *(uint8_t *)PTOV(ARGS); dsk->type = dsk->drive & DRV_HARD ? TYPE_AD : TYPE_FD; dsk->unit = dsk->drive & DRV_MASK; dsk->slice = *(uint8_t *)PTOV(ARGS + 1) + 1; dsk->part = 0; dsk->start = 0; dsk->init = 0; bootinfo.bi_version = BOOTINFO_VERSION; bootinfo.bi_size = sizeof(bootinfo); bootinfo.bi_basemem = bios_basemem / 1024; bootinfo.bi_extmem = bios_extmem / 1024; bootinfo.bi_memsizes_valid++; bootinfo.bi_bios_dev = dsk->drive; bootdev = MAKEBOOTDEV(dev_maj[dsk->type], dsk->slice, dsk->unit, dsk->part), /* Process configuration file */ autoboot = 1; zfs_init(); /* * Probe the boot drive first - we will try to boot from whatever * pool we find on that drive. */ probe_drive(dsk); /* * Probe the rest of the drives that the bios knows about. This * will find any other available pools and it may fill in missing * vdevs for the boot pool. */ #ifndef VIRTUALBOX for (i = 0; i < *(unsigned char *)PTOV(BIOS_NUMDRIVES); i++) #else for (i = 0; i < MAXBDDEV; i++) #endif { if ((i | DRV_HARD) == *(uint8_t *)PTOV(ARGS)) continue; if (!int13probe(i | DRV_HARD)) break; dsk = malloc(sizeof(struct dsk)); dsk->drive = i | DRV_HARD; dsk->type = dsk->drive & TYPE_AD; dsk->unit = i; dsk->slice = 0; dsk->part = 0; dsk->start = 0; dsk->init = 0; probe_drive(dsk); } /* * The first discovered pool, if any, is the pool. */ spa = spa_get_primary(); if (!spa) { printf("%s: No ZFS pools located, can't boot\n", BOOTPROG); for (;;) ; } primary_spa = spa; primary_vdev = spa_get_primary_vdev(spa); if (zfs_spa_init(spa) != 0 || zfs_mount(spa, 0, &zfsmount) != 0) { printf("%s: failed to mount default pool %s\n", BOOTPROG, spa->spa_name); autoboot = 0; } else if (zfs_lookup(&zfsmount, PATH_CONFIG, &dn) == 0 || zfs_lookup(&zfsmount, PATH_DOTCONFIG, &dn) == 0) { off = 0; zfs_read(spa, &dn, &off, cmd, sizeof(cmd)); } if (*cmd) { /* * Note that parse() is destructive to cmd[] and we also want * to honor RBX_QUIET option that could be present in cmd[]. */ memcpy(cmddup, cmd, sizeof(cmd)); if (parse()) autoboot = 0; if (!OPT_CHECK(RBX_QUIET)) printf("%s: %s\n", PATH_CONFIG, cmddup); /* Do not process this command twice */ *cmd = 0; } /* * Try to exec stage 3 boot loader. If interrupted by a keypress, * or in case of failure, try to load a kernel directly instead. */ if (autoboot && !*kname) { memcpy(kname, PATH_BOOT3, sizeof(PATH_BOOT3)); if (!keyhit(3)) { load(); memcpy(kname, PATH_KERNEL, sizeof(PATH_KERNEL)); } } /* Present the user with the boot2 prompt. */ for (;;) { if (!autoboot || !OPT_CHECK(RBX_QUIET)) { printf("\nFreeBSD/x86 boot\n"); if (zfs_rlookup(spa, zfsmount.rootobj, rootname) != 0) printf("Default: %s/<0x%llx>:%s\n" "boot: ", spa->spa_name, zfsmount.rootobj, kname); else if (rootname[0] != '\0') printf("Default: %s/%s:%s\n" "boot: ", spa->spa_name, rootname, kname); else printf("Default: %s:%s\n" "boot: ", spa->spa_name, kname); } if (ioctrl & IO_SERIAL) sio_flush(); if (!autoboot || keyhit(5)) getstr(cmd, sizeof(cmd)); else if (!autoboot || !OPT_CHECK(RBX_QUIET)) putchar('\n'); autoboot = 0; if (parse()) putchar('\a'); else load(); } } /* XXX - Needed for btxld to link the boot2 binary; do not remove. */ void exit(int x) { } static void load(void) { union { struct exec ex; Elf32_Ehdr eh; } hdr; static Elf32_Phdr ep[2]; static Elf32_Shdr es[2]; caddr_t p; dnode_phys_t dn; off_t off; uint32_t addr, x; int fmt, i, j; if (zfs_lookup(&zfsmount, kname, &dn)) { printf("\nCan't find %s\n", kname); return; } off = 0; if (xfsread(&dn, &off, &hdr, sizeof(hdr))) return; if (N_GETMAGIC(hdr.ex) == ZMAGIC) fmt = 0; else if (IS_ELF(hdr.eh)) fmt = 1; else { printf("Invalid %s\n", "format"); return; } if (fmt == 0) { addr = hdr.ex.a_entry & 0xffffff; p = PTOV(addr); off = PAGE_SIZE; if (xfsread(&dn, &off, p, hdr.ex.a_text)) return; p += roundup2(hdr.ex.a_text, PAGE_SIZE); if (xfsread(&dn, &off, p, hdr.ex.a_data)) return; p += hdr.ex.a_data + roundup2(hdr.ex.a_bss, PAGE_SIZE); bootinfo.bi_symtab = VTOP(p); memcpy(p, &hdr.ex.a_syms, sizeof(hdr.ex.a_syms)); p += sizeof(hdr.ex.a_syms); if (hdr.ex.a_syms) { if (xfsread(&dn, &off, p, hdr.ex.a_syms)) return; p += hdr.ex.a_syms; if (xfsread(&dn, &off, p, sizeof(int))) return; x = *(uint32_t *)p; p += sizeof(int); x -= sizeof(int); if (xfsread(&dn, &off, p, x)) return; p += x; } } else { off = hdr.eh.e_phoff; for (j = i = 0; i < hdr.eh.e_phnum && j < 2; i++) { if (xfsread(&dn, &off, ep + j, sizeof(ep[0]))) return; if (ep[j].p_type == PT_LOAD) j++; } for (i = 0; i < 2; i++) { p = PTOV(ep[i].p_paddr & 0xffffff); off = ep[i].p_offset; if (xfsread(&dn, &off, p, ep[i].p_filesz)) return; } p += roundup2(ep[1].p_memsz, PAGE_SIZE); bootinfo.bi_symtab = VTOP(p); if (hdr.eh.e_shnum == hdr.eh.e_shstrndx + 3) { off = hdr.eh.e_shoff + sizeof(es[0]) * (hdr.eh.e_shstrndx + 1); if (xfsread(&dn, &off, &es, sizeof(es))) return; for (i = 0; i < 2; i++) { memcpy(p, &es[i].sh_size, sizeof(es[i].sh_size)); p += sizeof(es[i].sh_size); off = es[i].sh_offset; if (xfsread(&dn, &off, p, es[i].sh_size)) return; p += es[i].sh_size; } } addr = hdr.eh.e_entry & 0xffffff; } bootinfo.bi_esymtab = VTOP(p); bootinfo.bi_kernelname = VTOP(kname); zfsargs.size = sizeof(zfsargs); zfsargs.pool = zfsmount.spa->spa_guid; zfsargs.root = zfsmount.rootobj; zfsargs.primary_pool = primary_spa->spa_guid; if (primary_vdev != NULL) zfsargs.primary_vdev = primary_vdev->v_guid; else printf("failed to detect primary vdev\n"); __exec((caddr_t)addr, RB_BOOTINFO | (opts & RBX_MASK), bootdev, KARGS_FLAGS_ZFS | KARGS_FLAGS_EXTARG, (uint32_t) spa->spa_guid, (uint32_t) (spa->spa_guid >> 32), VTOP(&bootinfo), zfsargs); } static int zfs_mount_ds(char *dsname) { uint64_t newroot; spa_t *newspa; char *q; q = strchr(dsname, '/'); if (q) *q++ = '\0'; newspa = spa_find_by_name(dsname); if (newspa == NULL) { printf("\nCan't find ZFS pool %s\n", dsname); return -1; } if (zfs_spa_init(newspa)) return -1; newroot = 0; if (q) { if (zfs_lookup_dataset(newspa, q, &newroot)) { printf("\nCan't find dataset %s in ZFS pool %s\n", q, newspa->spa_name); return -1; } } if (zfs_mount(newspa, newroot, &zfsmount)) { printf("\nCan't mount ZFS dataset\n"); return -1; } spa = newspa; return (0); } static int parse(void) { char *arg = cmd; char *ep, *p, *q; const char *cp; int c, i, j; while ((c = *arg++)) { if (c == ' ' || c == '\t' || c == '\n') continue; for (p = arg; *p && *p != '\n' && *p != ' ' && *p != '\t'; p++); ep = p; if (*p) *p++ = 0; if (c == '-') { while ((c = *arg++)) { if (c == 'P') { if (*(uint8_t *)PTOV(0x496) & 0x10) { cp = "yes"; } else { opts |= OPT_SET(RBX_DUAL) | OPT_SET(RBX_SERIAL); cp = "no"; } printf("Keyboard: %s\n", cp); continue; } else if (c == 'S') { j = 0; while ((unsigned int)(i = *arg++ - '0') <= 9) j = j * 10 + i; if (j > 0 && i == -'0') { comspeed = j; break; } /* Fall through to error below ('S' not in optstr[]). */ } for (i = 0; c != optstr[i]; i++) if (i == NOPT - 1) return -1; opts ^= OPT_SET(flags[i]); } ioctrl = OPT_CHECK(RBX_DUAL) ? (IO_SERIAL|IO_KEYBOARD) : OPT_CHECK(RBX_SERIAL) ? IO_SERIAL : IO_KEYBOARD; if (ioctrl & IO_SERIAL) { if (sio_init(115200 / comspeed) != 0) ioctrl &= ~IO_SERIAL; } } if (c == '?') { dnode_phys_t dn; if (zfs_lookup(&zfsmount, arg, &dn) == 0) { zap_list(spa, &dn); } return -1; } else { arg--; /* * Report pool status if the comment is 'status'. Lets * hope no-one wants to load /status as a kernel. */ if (!strcmp(arg, "status")) { spa_all_status(); return -1; } /* * If there is "zfs:" prefix simply ignore it. */ if (strncmp(arg, "zfs:", 4) == 0) arg += 4; /* * If there is a colon, switch pools. */ q = strchr(arg, ':'); if (q) { *q++ = '\0'; if (zfs_mount_ds(arg) != 0) return -1; arg = q; } if ((i = ep - arg)) { if ((size_t)i >= sizeof(kname)) return -1; memcpy(kname, arg, i + 1); } } arg = p; } return 0; } Index: stable/10/sys/boot/pc98/boot2/boot2.c =================================================================== --- stable/10/sys/boot/pc98/boot2/boot2.c (revision 294479) +++ stable/10/sys/boot/pc98/boot2/boot2.c (revision 294480) @@ -1,834 +1,834 @@ /*- * Copyright (c) 2008-2009 TAKAHASHI Yoshihiro * Copyright (c) 1998 Robert Nordier * All rights reserved. * * Redistribution and use in source and binary forms are freely * permitted provided that the above copyright notice and this * paragraph and the following disclaimer are duplicated in all * such forms. * * This software is provided "AS IS" and without any express or * implied warranties, including, without limitation, the implied * warranties of merchantability and fitness for a particular * purpose. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include "boot2.h" #include "lib.h" /* Define to 0 to omit serial support */ #ifndef SERIAL #define SERIAL 0 #endif #define IO_KEYBOARD 1 #define IO_SERIAL 2 #if SERIAL #define DO_KBD (ioctrl & IO_KEYBOARD) #define DO_SIO (ioctrl & IO_SERIAL) #else #define DO_KBD (1) #define DO_SIO (0) #endif #define SECOND 1 /* Circa that many ticks in a second. */ #define RBX_ASKNAME 0x0 /* -a */ #define RBX_SINGLE 0x1 /* -s */ /* 0x2 is reserved for log2(RB_NOSYNC). */ /* 0x3 is reserved for log2(RB_HALT). */ /* 0x4 is reserved for log2(RB_INITNAME). */ #define RBX_DFLTROOT 0x5 /* -r */ #define RBX_KDB 0x6 /* -d */ /* 0x7 is reserved for log2(RB_RDONLY). */ /* 0x8 is reserved for log2(RB_DUMP). */ /* 0x9 is reserved for log2(RB_MINIROOT). */ #define RBX_CONFIG 0xa /* -c */ #define RBX_VERBOSE 0xb /* -v */ #define RBX_SERIAL 0xc /* -h */ #define RBX_CDROM 0xd /* -C */ /* 0xe is reserved for log2(RB_POWEROFF). */ #define RBX_GDB 0xf /* -g */ #define RBX_MUTE 0x10 /* -m */ /* 0x11 is reserved for log2(RB_SELFTEST). */ /* 0x12 is reserved for boot programs. */ /* 0x13 is reserved for boot programs. */ #define RBX_PAUSE 0x14 /* -p */ #define RBX_QUIET 0x15 /* -q */ #define RBX_NOINTR 0x1c /* -n */ /* 0x1d is reserved for log2(RB_MULTIPLE) and is just misnamed here. */ #define RBX_DUAL 0x1d /* -D */ /* 0x1f is reserved for log2(RB_BOOTINFO). */ /* pass: -a, -s, -r, -d, -c, -v, -h, -C, -g, -m, -p, -D */ #define RBX_MASK (OPT_SET(RBX_ASKNAME) | OPT_SET(RBX_SINGLE) | \ OPT_SET(RBX_DFLTROOT) | OPT_SET(RBX_KDB ) | \ OPT_SET(RBX_CONFIG) | OPT_SET(RBX_VERBOSE) | \ OPT_SET(RBX_SERIAL) | OPT_SET(RBX_CDROM) | \ OPT_SET(RBX_GDB ) | OPT_SET(RBX_MUTE) | \ OPT_SET(RBX_PAUSE) | OPT_SET(RBX_DUAL)) #define PATH_DOTCONFIG "/boot.config" #define PATH_CONFIG "/boot/config" #define PATH_BOOT3 "/boot/loader" #define PATH_KERNEL "/boot/kernel/kernel" #define ARGS 0x900 #define NOPT 14 #define NDEV 3 #define DRV_DISK 0xf0 #define DRV_UNIT 0x0f #define TYPE_AD 0 #define TYPE_DA 1 #define TYPE_FD 2 #define OPT_SET(opt) (1 << (opt)) #define OPT_CHECK(opt) ((opts) & OPT_SET(opt)) extern uint32_t _end; static const char optstr[NOPT] = "DhaCcdgmnpqrsv"; /* Also 'P', 'S' */ static const unsigned char flags[NOPT] = { RBX_DUAL, RBX_SERIAL, RBX_ASKNAME, RBX_CDROM, RBX_CONFIG, RBX_KDB, RBX_GDB, RBX_MUTE, RBX_NOINTR, RBX_PAUSE, RBX_QUIET, RBX_DFLTROOT, RBX_SINGLE, RBX_VERBOSE }; static const char *const dev_nm[NDEV] = {"ad", "da", "fd"}; static const unsigned char dev_maj[NDEV] = {30, 4, 2}; static const unsigned char dev_daua[NDEV] = {0x80, 0xa0, 0x90}; static struct dsk { unsigned daua; unsigned type; unsigned disk; unsigned unit; unsigned head; unsigned sec; uint8_t slice; uint8_t part; unsigned start; } dsk; static char cmd[512], cmddup[512], knamebuf[1024]; static const char *kname; static uint32_t opts; static struct bootinfo bootinfo; #if SERIAL static int comspeed = SIOSPD; static uint8_t ioctrl = IO_KEYBOARD; #endif void exit(int); static void load(void); static int parse(void); static int dskread(void *, unsigned, unsigned); static void printf(const char *,...); static void putchar(int); static int drvread(void *, unsigned); static int keyhit(unsigned); static int xputc(int); static int xgetc(int); static inline int getc(int); static void memcpy(void *, const void *, int); static void memcpy(void *dst, const void *src, int len) { const char *s = src; char *d = dst; while (len--) *d++ = *s++; } static inline int strcmp(const char *s1, const char *s2) { for (; *s1 == *s2 && *s1; s1++, s2++); return (unsigned char)*s1 - (unsigned char)*s2; } #define UFS_SMALL_CGBASE #include "ufsread.c" static inline int xfsread(ufs_ino_t inode, void *buf, size_t nbyte) { if ((size_t)fsread(inode, buf, nbyte) != nbyte) { printf("Invalid %s\n", "format"); return -1; } return 0; } static inline void getstr(void) { char *s; int c; s = cmd; for (;;) { switch (c = xgetc(0)) { case 0: break; case '\177': case '\b': if (s > cmd) { s--; printf("\b \b"); } break; case '\n': case '\r': *s = 0; return; default: if (s - cmd < sizeof(cmd) - 1) *s++ = c; putchar(c); } } } static inline void putc(int c) { v86.ctl = V86_ADDR | V86_CALLF | V86_FLAGS; v86.addr = PUTCORG; /* call to putc in boot1 */ v86.eax = c; v86int(); v86.ctl = V86_FLAGS; } static inline int is_scsi_hd(void) { if ((*(u_char *)PTOV(0x482) >> dsk.unit) & 0x01) return 1; return 0; } static inline void fix_sector_size(void) { u_char *p; p = (u_char *)PTOV(0x460 + dsk.unit * 4); /* SCSI equipment parameter */ if ((p[0] & 0x1f) == 7) { /* SCSI MO */ if (!(p[3] & 0x30)) { /* 256B / sector */ p[3] |= 0x10; /* forced set 512B / sector */ p[3 + 0xa1000] |= 0x10; } } } static inline uint32_t get_diskinfo(void) { if (dsk.disk == 0x30) { /* 1440KB FD */ /* 80 cylinders, 2 heads, 18 sectors */ return (80 << 16) | (2 << 8) | 18; } else if (dsk.disk == 0x90) { /* 1200KB FD */ /* 80 cylinders, 2 heads, 15 sectors */ return (80 << 16) | (2 << 8) | 15; } else if (dsk.disk == 0x80 || is_scsi_hd()) { /* IDE or SCSI HDD */ v86.addr = 0x1b; v86.eax = 0x8400 | dsk.daua; v86int(); return (v86.ecx << 16) | v86.edx; } /* SCSI MO or CD */ fix_sector_size(); /* SCSI MO */ /* other SCSI devices */ return (65535 << 16) | (8 << 8) | 32; } static void set_dsk(void) { uint32_t di; di = get_diskinfo(); dsk.head = (di >> 8) & 0xff; dsk.sec = di & 0xff; dsk.start = 0; } #ifdef GET_BIOSGEOM static uint32_t bd_getbigeom(int bunit) { int hds = 0; int unit = 0x80; /* IDE HDD */ u_int addr = 0x55d; while (unit < 0xa7) { if (*(u_char *)PTOV(addr) & (1 << (unit & 0x0f))) if (hds++ == bunit) break; if (unit >= 0xA0) { int media = ((unsigned *)PTOV(0x460))[unit & 0x0F] & 0x1F; if (media == 7 && hds++ == bunit) /* SCSI MO */ return(0xFFFE0820); /* C:65535 H:8 S:32 */ } if (++unit == 0x84) { unit = 0xA0; /* SCSI HDD */ addr = 0x482; } } if (unit == 0xa7) return 0x4F020F; /* 1200KB FD C:80 H:2 S:15 */ v86.addr = 0x1b; v86.eax = 0x8400 | unit; v86int(); - if (v86.efl & 0x1) + if (V86_CY(v86.efl)) return 0x4F020F; /* 1200KB FD C:80 H:2 S:15 */ return ((v86.ecx & 0xffff) << 16) | (v86.edx & 0xffff); } #endif static int check_slice(void) { struct pc98_partition *dp; char *sec; unsigned i, cyl; sec = dmadat->secbuf; cyl = *(uint16_t *)PTOV(ARGS); set_dsk(); if (dsk.type == TYPE_FD) return (WHOLE_DISK_SLICE); if (drvread(sec, PC98_BBSECTOR)) return (WHOLE_DISK_SLICE); /* Read error */ dp = (void *)(sec + PC98_PARTOFF); for (i = 0; i < PC98_NPARTS; i++) { if (dp[i].dp_mid == DOSMID_386BSD) { if (dp[i].dp_scyl <= cyl && cyl <= dp[i].dp_ecyl) return (BASE_SLICE + i); } } return (WHOLE_DISK_SLICE); } int main(void) { #ifdef GET_BIOSGEOM int i; #endif uint8_t autoboot; ufs_ino_t ino; size_t nbyte; dmadat = (void *)(roundup2(__base + (int32_t)&_end, 0x10000) - __base); v86.ctl = V86_FLAGS; v86.efl = PSL_RESERVED_DEFAULT | PSL_I; dsk.daua = *(uint8_t *)PTOV(0x584); dsk.disk = dsk.daua & DRV_DISK; dsk.unit = dsk.daua & DRV_UNIT; if (dsk.disk == 0x80) dsk.type = TYPE_AD; else if (dsk.disk == 0xa0) dsk.type = TYPE_DA; else /* if (dsk.disk == 0x30 || dsk.disk == 0x90) */ dsk.type = TYPE_FD; dsk.slice = check_slice(); #ifdef GET_BIOSGEOM for (i = 0; i < N_BIOS_GEOM; i++) bootinfo.bi_bios_geom[i] = bd_getbigeom(i); #endif bootinfo.bi_version = BOOTINFO_VERSION; bootinfo.bi_size = sizeof(bootinfo); /* Process configuration file */ autoboot = 1; if ((ino = lookup(PATH_CONFIG)) || (ino = lookup(PATH_DOTCONFIG))) { nbyte = fsread(ino, cmd, sizeof(cmd) - 1); cmd[nbyte] = '\0'; } if (*cmd) { memcpy(cmddup, cmd, sizeof(cmd)); if (parse()) autoboot = 0; if (!OPT_CHECK(RBX_QUIET)) printf("%s: %s", PATH_CONFIG, cmddup); /* Do not process this command twice */ *cmd = 0; } /* * Try to exec stage 3 boot loader. If interrupted by a keypress, * or in case of failure, try to load a kernel directly instead. */ if (!kname) { kname = PATH_BOOT3; if (autoboot && !keyhit(3*SECOND)) { load(); kname = PATH_KERNEL; } } /* Present the user with the boot2 prompt. */ for (;;) { if (!autoboot || !OPT_CHECK(RBX_QUIET)) printf("\nFreeBSD/pc98 boot\n" "Default: %u:%s(%u,%c)%s\n" "boot: ", dsk.unit, dev_nm[dsk.type], dsk.unit, 'a' + dsk.part, kname); if (DO_SIO) sio_flush(); if (!autoboot || keyhit(3*SECOND)) getstr(); else if (!autoboot || !OPT_CHECK(RBX_QUIET)) putchar('\n'); autoboot = 0; if (parse()) putchar('\a'); else load(); } } /* XXX - Needed for btxld to link the boot2 binary; do not remove. */ void exit(int x) { } static void load(void) { union { struct exec ex; Elf32_Ehdr eh; } hdr; static Elf32_Phdr ep[2]; static Elf32_Shdr es[2]; caddr_t p; ufs_ino_t ino; uint32_t addr; int i, j; if (!(ino = lookup(kname))) { if (!ls) printf("No %s\n", kname); return; } if (xfsread(ino, &hdr, sizeof(hdr))) return; if (N_GETMAGIC(hdr.ex) == ZMAGIC) { addr = hdr.ex.a_entry & 0xffffff; p = PTOV(addr); fs_off = PAGE_SIZE; if (xfsread(ino, p, hdr.ex.a_text)) return; p += roundup2(hdr.ex.a_text, PAGE_SIZE); if (xfsread(ino, p, hdr.ex.a_data)) return; } else if (IS_ELF(hdr.eh)) { fs_off = hdr.eh.e_phoff; for (j = i = 0; i < hdr.eh.e_phnum && j < 2; i++) { if (xfsread(ino, ep + j, sizeof(ep[0]))) return; if (ep[j].p_type == PT_LOAD) j++; } for (i = 0; i < 2; i++) { p = PTOV(ep[i].p_paddr & 0xffffff); fs_off = ep[i].p_offset; if (xfsread(ino, p, ep[i].p_filesz)) return; } p += roundup2(ep[1].p_memsz, PAGE_SIZE); bootinfo.bi_symtab = VTOP(p); if (hdr.eh.e_shnum == hdr.eh.e_shstrndx + 3) { fs_off = hdr.eh.e_shoff + sizeof(es[0]) * (hdr.eh.e_shstrndx + 1); if (xfsread(ino, &es, sizeof(es))) return; for (i = 0; i < 2; i++) { *(Elf32_Word *)p = es[i].sh_size; p += sizeof(es[i].sh_size); fs_off = es[i].sh_offset; if (xfsread(ino, p, es[i].sh_size)) return; p += es[i].sh_size; } } addr = hdr.eh.e_entry & 0xffffff; bootinfo.bi_esymtab = VTOP(p); } else { printf("Invalid %s\n", "format"); return; } bootinfo.bi_kernelname = VTOP(kname); bootinfo.bi_bios_dev = dsk.daua; __exec((caddr_t)addr, RB_BOOTINFO | (opts & RBX_MASK), MAKEBOOTDEV(dev_maj[dsk.type], dsk.slice, dsk.unit, dsk.part), 0, 0, 0, VTOP(&bootinfo)); } static int parse() { char *arg = cmd; char *ep, *p, *q; const char *cp; unsigned int drv; int c, i, j; while ((c = *arg++)) { if (c == ' ' || c == '\t' || c == '\n') continue; for (p = arg; *p && *p != '\n' && *p != ' ' && *p != '\t'; p++); ep = p; if (*p) *p++ = 0; if (c == '-') { while ((c = *arg++)) { if (c == 'P') { if (*(uint8_t *)PTOV(0x481) & 0x48) { cp = "yes"; } else { opts |= OPT_SET(RBX_DUAL) | OPT_SET(RBX_SERIAL); cp = "no"; } printf("Keyboard: %s\n", cp); continue; #if SERIAL } else if (c == 'S') { j = 0; while ((unsigned int)(i = *arg++ - '0') <= 9) j = j * 10 + i; if (j > 0 && i == -'0') { comspeed = j; break; } /* Fall through to error below ('S' not in optstr[]). */ #endif } for (i = 0; c != optstr[i]; i++) if (i == NOPT - 1) return -1; opts ^= OPT_SET(flags[i]); } #if SERIAL ioctrl = OPT_CHECK(RBX_DUAL) ? (IO_SERIAL|IO_KEYBOARD) : OPT_CHECK(RBX_SERIAL) ? IO_SERIAL : IO_KEYBOARD; if (DO_SIO) { if (sio_init(115200 / comspeed) != 0) ioctrl &= ~IO_SERIAL; } #endif } else { for (q = arg--; *q && *q != '('; q++); if (*q) { drv = -1; if (arg[1] == ':') { drv = *arg - '0'; if (drv > 9) return (-1); arg += 2; } if (q - arg != 2) return -1; for (i = 0; arg[0] != dev_nm[i][0] || arg[1] != dev_nm[i][1]; i++) if (i == NDEV - 1) return -1; dsk.type = i; arg += 3; dsk.unit = *arg - '0'; if (arg[1] != ',' || dsk.unit > 9) return -1; arg += 2; dsk.slice = WHOLE_DISK_SLICE; if (arg[1] == ',') { dsk.slice = *arg - '0' + 1; if (dsk.slice > PC98_NPARTS + 1) return -1; arg += 2; } if (arg[1] != ')') return -1; dsk.part = *arg - 'a'; if (dsk.part > 7) return (-1); arg += 2; if (drv == -1) drv = dsk.unit; dsk.disk = dev_daua[dsk.type]; dsk.daua = dsk.disk | dsk.unit; dsk_meta = 0; } if ((i = ep - arg)) { if ((size_t)i >= sizeof(knamebuf)) return -1; memcpy(knamebuf, arg, i + 1); kname = knamebuf; } } arg = p; } return 0; } static int dskread(void *buf, unsigned lba, unsigned nblk) { struct pc98_partition *dp; struct disklabel *d; char *sec; unsigned i; uint8_t sl; u_char *p; if (!dsk_meta) { sec = dmadat->secbuf; set_dsk(); if (dsk.type == TYPE_FD) goto unsliced; if (drvread(sec, PC98_BBSECTOR)) return -1; dp = (void *)(sec + PC98_PARTOFF); sl = dsk.slice; if (sl < BASE_SLICE) { for (i = 0; i < PC98_NPARTS; i++) if (dp[i].dp_mid == DOSMID_386BSD) { sl = BASE_SLICE + i; break; } dsk.slice = sl; } if (sl != WHOLE_DISK_SLICE) { dp += sl - BASE_SLICE; if (dp->dp_mid != DOSMID_386BSD) { printf("Invalid %s\n", "slice"); return -1; } dsk.start = dp->dp_scyl * dsk.head * dsk.sec + dp->dp_shd * dsk.sec + dp->dp_ssect; } if (drvread(sec, dsk.start + LABELSECTOR)) return -1; d = (void *)(sec + LABELOFFSET); if (d->d_magic != DISKMAGIC || d->d_magic2 != DISKMAGIC) { if (dsk.part != RAW_PART) { printf("Invalid %s\n", "label"); return -1; } } else { if (dsk.part >= d->d_npartitions || !d->d_partitions[dsk.part].p_size) { printf("Invalid %s\n", "partition"); return -1; } dsk.start += d->d_partitions[dsk.part].p_offset; dsk.start -= d->d_partitions[RAW_PART].p_offset; } unsliced: ; } for (p = buf; nblk; p += 512, lba++, nblk--) { if ((i = drvread(p, dsk.start + lba))) return i; } return 0; } static void printf(const char *fmt,...) { va_list ap; static char buf[10]; char *s; unsigned u; int c; va_start(ap, fmt); while ((c = *fmt++)) { if (c == '%') { c = *fmt++; switch (c) { case 'c': putchar(va_arg(ap, int)); continue; case 's': for (s = va_arg(ap, char *); *s; s++) putchar(*s); continue; case 'u': u = va_arg(ap, unsigned); s = buf; do *s++ = '0' + u % 10U; while (u /= 10U); while (--s >= buf) putchar(*s); continue; } } putchar(c); } va_end(ap); return; } static void putchar(int c) { if (c == '\n') xputc('\r'); xputc(c); } static int drvread(void *buf, unsigned lba) { static unsigned c = 0x2d5c7c2f; unsigned bpc, x, cyl, head, sec; bpc = dsk.sec * dsk.head; cyl = lba / bpc; x = lba % bpc; head = x / dsk.sec; sec = x % dsk.sec; if (!OPT_CHECK(RBX_QUIET)) printf("%c\b", c = c << 8 | c >> 24); v86.ctl = V86_ADDR | V86_CALLF | V86_FLAGS; v86.addr = READORG; /* call to read in boot1 */ v86.ecx = cyl; v86.edx = (head << 8) | sec; v86.edi = lba; v86.ebx = 512; v86.es = VTOPSEG(buf); v86.ebp = VTOPOFF(buf); v86int(); v86.ctl = V86_FLAGS; if (V86_CY(v86.efl)) { printf("error %u c/h/s %u/%u/%u lba %u\n", v86.eax >> 8 & 0xff, cyl, head, sec, lba); return -1; } return 0; } static inline void delay(void) { int i; i = 800; do { outb(0x5f, 0); /* about 600ns */ } while (--i >= 0); } static int keyhit(unsigned sec) { unsigned i; if (OPT_CHECK(RBX_NOINTR)) return 0; for (i = 0; i < sec * 1000; i++) { if (xgetc(1)) return 1; delay(); } return 0; } static int xputc(int c) { if (DO_KBD) putc(c); if (DO_SIO) sio_putc(c); return c; } static int getc(int fn) { v86.addr = 0x18; v86.eax = fn << 8; v86int(); if (fn) return (v86.ebx >> 8) & 0x01; else return v86.eax & 0xff; } static int xgetc(int fn) { if (OPT_CHECK(RBX_NOINTR)) return 0; for (;;) { if (DO_KBD && getc(1)) return fn ? 1 : getc(0); if (DO_SIO && sio_ischar()) return fn ? 1 : sio_getc(); if (fn) return 0; } } Index: stable/10/sys/boot/pc98/libpc98/biosdisk.c =================================================================== --- stable/10/sys/boot/pc98/libpc98/biosdisk.c (revision 294479) +++ stable/10/sys/boot/pc98/libpc98/biosdisk.c (revision 294480) @@ -1,1085 +1,1085 @@ /*- * Copyright (c) 1998 Michael Smith * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */ #include __FBSDID("$FreeBSD$"); /* * BIOS disk device handling. * * Ideas and algorithms from: * * - NetBSD libi386/biosdisk.c * - FreeBSD biosboot/disk.c * */ #include #include #include #include #include #include #include #include "libi386.h" #define BIOS_NUMDRIVES 0x475 #define BIOSDISK_SECSIZE 512 #define BUFSIZE (1 * BIOSDISK_SECSIZE) #define DT_ATAPI 0x10 /* disk type for ATAPI floppies */ #define WDMAJOR 0 /* major numbers for devices we frontend for */ #define WFDMAJOR 1 #define FDMAJOR 2 #define DAMAJOR 4 #ifdef DISK_DEBUG # define DEBUG(fmt, args...) printf("%s: " fmt "\n" , __func__ , ## args) #else # define DEBUG(fmt, args...) #endif struct open_disk { int od_dkunit; /* disk unit number */ int od_unit; /* BIOS unit number */ int od_cyl; /* BIOS geometry */ int od_hds; int od_sec; int od_boff; /* block offset from beginning of BIOS disk */ int od_flags; #define BD_MODEINT13 0x0000 #define BD_MODEEDD1 0x0001 #define BD_MODEEDD3 0x0002 #define BD_MODEMASK 0x0003 #define BD_FLOPPY 0x0004 #define BD_LABELOK 0x0008 #define BD_PARTTABOK 0x0010 #define BD_OPTICAL 0x0020 struct disklabel od_disklabel; int od_nslices; /* slice count */ struct pc98_partition od_slicetab[PC98_NPARTS]; }; /* * List of BIOS devices, translation from disk unit number to * BIOS unit number. */ static struct bdinfo { int bd_unit; /* BIOS unit number */ int bd_flags; int bd_type; /* BIOS 'drive type' (floppy only) */ int bd_da_unit; /* kernel unit number for da */ } bdinfo [MAXBDDEV]; static int nbdinfo = 0; static int bd_getgeom(struct open_disk *od); static int bd_read(struct open_disk *od, daddr_t dblk, int blks, caddr_t dest); static int bd_write(struct open_disk *od, daddr_t dblk, int blks, caddr_t dest); static int bd_int13probe(struct bdinfo *bd); static void bd_printslice(struct open_disk *od, struct pc98_partition *dp, char *prefix, int verbose); static void bd_printbsdslice(struct open_disk *od, daddr_t offset, char *prefix, int verbose); static int bd_init(void); static int bd_strategy(void *devdata, int flag, daddr_t dblk, size_t size, char *buf, size_t *rsize); static int bd_realstrategy(void *devdata, int flag, daddr_t dblk, size_t size, char *buf, size_t *rsize); static int bd_open(struct open_file *f, ...); static int bd_close(struct open_file *f); static void bd_print(int verbose); struct devsw biosdisk = { "disk", DEVT_DISK, bd_init, bd_strategy, bd_open, bd_close, noioctl, bd_print, NULL }; static int bd_opendisk(struct open_disk **odp, struct i386_devdesc *dev); static void bd_closedisk(struct open_disk *od); static int bd_open_pc98(struct open_disk *od, struct i386_devdesc *dev); static int bd_bestslice(struct open_disk *od); static void bd_checkextended(struct open_disk *od, int slicenum); /* * Translate between BIOS device numbers and our private unit numbers. */ int bd_bios2unit(int biosdev) { int i; DEBUG("looking for bios device 0x%x", biosdev); for (i = 0; i < nbdinfo; i++) { DEBUG("bd unit %d is BIOS device 0x%x", i, bdinfo[i].bd_unit); if (bdinfo[i].bd_unit == biosdev) return(i); } return(-1); } int bd_unit2bios(int unit) { if ((unit >= 0) && (unit < nbdinfo)) return(bdinfo[unit].bd_unit); return(-1); } /* * Quiz the BIOS for disk devices, save a little info about them. */ static int bd_init(void) { int base, unit; int da_drive=0, n=-0x10; /* sequence 0x90, 0x80, 0xa0 */ for (base = 0x90; base <= 0xa0; base += n, n += 0x30) { for (unit = base; (nbdinfo < MAXBDDEV) || ((unit & 0x0f) < 4); unit++) { bdinfo[nbdinfo].bd_unit = unit; bdinfo[nbdinfo].bd_flags = (unit & 0xf0) == 0x90 ? BD_FLOPPY : 0; if (!bd_int13probe(&bdinfo[nbdinfo])){ if (((unit & 0xf0) == 0x90 && (unit & 0x0f) < 4) || ((unit & 0xf0) == 0xa0 && (unit & 0x0f) < 6)) continue; /* Target IDs are not contiguous. */ else break; } if (bdinfo[nbdinfo].bd_flags & BD_FLOPPY){ /* available 1.44MB access? */ if (*(u_char *)PTOV(0xA15AE) & (1<<(unit & 0xf))) { /* boot media 1.2MB FD? */ if ((*(u_char *)PTOV(0xA1584) & 0xf0) != 0x90) bdinfo[nbdinfo].bd_unit = 0x30 + (unit & 0xf); } } else { if ((unit & 0xF0) == 0xA0) /* SCSI HD or MO */ bdinfo[nbdinfo].bd_da_unit = da_drive++; } /* XXX we need "disk aliases" to make this simpler */ printf("BIOS drive %c: is disk%d\n", 'A' + nbdinfo, nbdinfo); nbdinfo++; } } return(0); } /* * Try to detect a device supported by the legacy int13 BIOS */ static int bd_int13probe(struct bdinfo *bd) { int addr; if (bd->bd_flags & BD_FLOPPY) { addr = 0xa155c; } else { if ((bd->bd_unit & 0xf0) == 0x80) addr = 0xa155d; else addr = 0xa1482; } if ( *(u_char *)PTOV(addr) & (1<<(bd->bd_unit & 0x0f))) { bd->bd_flags |= BD_MODEINT13; return(1); } if ((bd->bd_unit & 0xF0) == 0xA0) { int media = ((unsigned *)PTOV(0xA1460))[bd->bd_unit & 0x0F] & 0x1F; if (media == 7) { /* MO */ bd->bd_flags |= BD_MODEINT13 | BD_OPTICAL; return(1); } } return(0); } /* * Print information about disks */ static void bd_print(int verbose) { int i, j; char line[80]; struct i386_devdesc dev; struct open_disk *od; struct pc98_partition *dptr; for (i = 0; i < nbdinfo; i++) { sprintf(line, " disk%d: BIOS drive %c:\n", i, 'A' + i); pager_output(line); /* try to open the whole disk */ dev.d_unit = i; dev.d_kind.biosdisk.slice = -1; dev.d_kind.biosdisk.partition = -1; if (!bd_opendisk(&od, &dev)) { /* Do we have a partition table? */ if (od->od_flags & BD_PARTTABOK) { dptr = &od->od_slicetab[0]; /* Check for a "dedicated" disk */ for (j = 0; j < od->od_nslices; j++) { sprintf(line, " disk%ds%d", i, j + 1); bd_printslice(od, &dptr[j], line, verbose); } } bd_closedisk(od); } } } /* Given a size in 512 byte sectors, convert it to a human-readable number. */ static char * display_size(uint64_t size) { static char buf[80]; char unit; size /= 2; unit = 'K'; if (size >= 10485760000LL) { size /= 1073741824; unit = 'T'; } else if (size >= 10240000) { size /= 1048576; unit = 'G'; } else if (size >= 10000) { size /= 1024; unit = 'M'; } sprintf(buf, "%6ld%cB", (long)size, unit); return (buf); } /* * Print information about slices on a disk. For the size calculations we * assume a 512 byte sector. */ static void bd_printslice(struct open_disk *od, struct pc98_partition *dp, char *prefix, int verbose) { int cylsecs, start, size; char stats[80]; char line[80]; cylsecs = od->od_hds * od->od_sec; start = dp->dp_scyl * cylsecs + dp->dp_shd * od->od_sec + dp->dp_ssect; size = (dp->dp_ecyl - dp->dp_scyl + 1) * cylsecs; if (verbose) sprintf(stats, " %s (%d - %d)", display_size(size), start, start + size); else stats[0] = '\0'; switch(dp->dp_mid & PC98_MID_MASK) { case PC98_MID_386BSD: bd_printbsdslice(od, start, prefix, verbose); return; case 0x00: /* unused partition */ return; case 0x01: sprintf(line, "%s: FAT-12%s\n", prefix, stats); break; case 0x11: case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: sprintf(line, "%s: FAT-16%s\n", prefix, stats); break; default: sprintf(line, "%s: Unknown fs: 0x%x %s\n", prefix, dp->dp_mid, stats); } pager_output(line); } /* * Print out each valid partition in the disklabel of a FreeBSD slice. * For size calculations, we assume a 512 byte sector size. */ static void bd_printbsdslice(struct open_disk *od, daddr_t offset, char *prefix, int verbose) { char line[80]; char buf[BIOSDISK_SECSIZE]; struct disklabel *lp; int i; /* read disklabel */ if (bd_read(od, offset + LABELSECTOR, 1, buf)) return; lp =(struct disklabel *)(&buf[0]); if (lp->d_magic != DISKMAGIC) { sprintf(line, "%s: FFS bad disklabel\n", prefix); pager_output(line); return; } /* Print partitions */ for (i = 0; i < lp->d_npartitions; i++) { /* * For each partition, make sure we know what type of fs it is. If * not, then skip it. However, since floppies often have bogus * fstypes, print the 'a' partition on a floppy even if it is marked * unused. */ if ((lp->d_partitions[i].p_fstype == FS_BSDFFS) || (lp->d_partitions[i].p_fstype == FS_SWAP) || (lp->d_partitions[i].p_fstype == FS_VINUM) || ((lp->d_partitions[i].p_fstype == FS_UNUSED) && (od->od_flags & BD_FLOPPY) && (i == 0))) { /* Only print out statistics in verbose mode */ if (verbose) sprintf(line, " %s%c: %s %s (%d - %d)\n", prefix, 'a' + i, (lp->d_partitions[i].p_fstype == FS_SWAP) ? "swap " : (lp->d_partitions[i].p_fstype == FS_VINUM) ? "vinum" : "FFS ", display_size(lp->d_partitions[i].p_size), lp->d_partitions[i].p_offset, lp->d_partitions[i].p_offset + lp->d_partitions[i].p_size); else sprintf(line, " %s%c: %s\n", prefix, 'a' + i, (lp->d_partitions[i].p_fstype == FS_SWAP) ? "swap" : (lp->d_partitions[i].p_fstype == FS_VINUM) ? "vinum" : "FFS"); pager_output(line); } } } /* * Attempt to open the disk described by (dev) for use by (f). * * Note that the philosophy here is "give them exactly what * they ask for". This is necessary because being too "smart" * about what the user might want leads to complications. * (eg. given no slice or partition value, with a disk that is * sliced - are they after the first BSD slice, or the DOS * slice before it?) */ static int bd_open(struct open_file *f, ...) { va_list ap; struct i386_devdesc *dev; struct open_disk *od; int error; va_start(ap, f); dev = va_arg(ap, struct i386_devdesc *); va_end(ap); if ((error = bd_opendisk(&od, dev))) return(error); /* * Save our context */ ((struct i386_devdesc *)(f->f_devdata))->d_kind.biosdisk.data = od; DEBUG("open_disk %p, partition at 0x%x", od, od->od_boff); return(0); } static int bd_opendisk(struct open_disk **odp, struct i386_devdesc *dev) { struct open_disk *od; int error; if (dev->d_unit >= nbdinfo) { DEBUG("attempt to open nonexistent disk"); return(ENXIO); } od = (struct open_disk *)malloc(sizeof(struct open_disk)); if (!od) { DEBUG("no memory"); return (ENOMEM); } /* Look up BIOS unit number, intialise open_disk structure */ od->od_dkunit = dev->d_unit; od->od_unit = bdinfo[od->od_dkunit].bd_unit; od->od_flags = bdinfo[od->od_dkunit].bd_flags; od->od_boff = 0; error = 0; DEBUG("open '%s', unit 0x%x slice %d partition %d", i386_fmtdev(dev), dev->d_unit, dev->d_kind.biosdisk.slice, dev->d_kind.biosdisk.partition); /* Get geometry for this open (removable device may have changed) */ if (bd_getgeom(od)) { DEBUG("can't get geometry"); error = ENXIO; goto out; } /* Determine disk layout. */ error = bd_open_pc98(od, dev); out: if (error) { free(od); } else { *odp = od; /* return the open disk */ } return(error); } static int bd_open_pc98(struct open_disk *od, struct i386_devdesc *dev) { struct pc98_partition *dptr; struct disklabel *lp; int sector, slice, i; char buf[BUFSIZE]; /* * Following calculations attempt to determine the correct value * for d->od_boff by looking for the slice and partition specified, * or searching for reasonable defaults. */ /* * Find the slice in the DOS slice table. */ od->od_nslices = 0; if (od->od_flags & BD_FLOPPY) { sector = 0; goto unsliced; } if (bd_read(od, 0, 1, buf)) { DEBUG("error reading MBR"); return (EIO); } /* * Check the slice table magic. */ if (((u_char)buf[0x1fe] != 0x55) || ((u_char)buf[0x1ff] != 0xaa)) { /* If a slice number was explicitly supplied, this is an error */ if (dev->d_kind.biosdisk.slice > 0) { DEBUG("no slice table/MBR (no magic)"); return (ENOENT); } sector = 0; goto unsliced; /* may be a floppy */ } if (bd_read(od, 1, 1, buf)) { DEBUG("error reading MBR"); return (EIO); } /* * copy the partition table, then pick up any extended partitions. */ bcopy(buf + PC98_PARTOFF, &od->od_slicetab, sizeof(struct pc98_partition) * PC98_NPARTS); od->od_nslices = PC98_NPARTS; /* extended slices start here */ od->od_flags |= BD_PARTTABOK; dptr = &od->od_slicetab[0]; /* Is this a request for the whole disk? */ if (dev->d_kind.biosdisk.slice == -1) { sector = 0; goto unsliced; } /* * if a slice number was supplied but not found, this is an error. */ if (dev->d_kind.biosdisk.slice > 0) { slice = dev->d_kind.biosdisk.slice - 1; if (slice >= od->od_nslices) { DEBUG("slice %d not found", slice); return (ENOENT); } } /* Try to auto-detect the best slice; this should always give a slice number */ if (dev->d_kind.biosdisk.slice == 0) { slice = bd_bestslice(od); if (slice == -1) { return (ENOENT); } dev->d_kind.biosdisk.slice = slice; } dptr = &od->od_slicetab[0]; /* * Accept the supplied slice number unequivocally (we may be looking * at a DOS partition). */ dptr += (dev->d_kind.biosdisk.slice - 1); /* we number 1-4, offsets are 0-3 */ sector = dptr->dp_scyl * od->od_hds * od->od_sec + dptr->dp_shd * od->od_sec + dptr->dp_ssect; { int end = dptr->dp_ecyl * od->od_hds * od->od_sec + dptr->dp_ehd * od->od_sec + dptr->dp_esect; DEBUG("slice entry %d at %d, %d sectors", dev->d_kind.biosdisk.slice - 1, sector, end-sector); } /* * If we are looking at a BSD slice, and the partition is < 0, assume the 'a' partition */ if ((dptr->dp_mid == DOSMID_386BSD) && (dev->d_kind.biosdisk.partition < 0)) dev->d_kind.biosdisk.partition = 0; unsliced: /* * Now we have the slice offset, look for the partition in the disklabel if we have * a partition to start with. * * XXX we might want to check the label checksum. */ if (dev->d_kind.biosdisk.partition < 0) { od->od_boff = sector; /* no partition, must be after the slice */ DEBUG("opening raw slice"); } else { if (bd_read(od, sector + LABELSECTOR, 1, buf)) { DEBUG("error reading disklabel"); return (EIO); } DEBUG("copy %d bytes of label from %p to %p", sizeof(struct disklabel), buf + LABELOFFSET, &od->od_disklabel); bcopy(buf + LABELOFFSET, &od->od_disklabel, sizeof(struct disklabel)); lp = &od->od_disklabel; od->od_flags |= BD_LABELOK; if (lp->d_magic != DISKMAGIC) { DEBUG("no disklabel"); return (ENOENT); } if (dev->d_kind.biosdisk.partition >= lp->d_npartitions) { DEBUG("partition '%c' exceeds partitions in table (a-'%c')", 'a' + dev->d_kind.biosdisk.partition, 'a' + lp->d_npartitions); return (EPART); } #ifdef DISK_DEBUG /* Complain if the partition is unused unless this is a floppy. */ if ((lp->d_partitions[dev->d_kind.biosdisk.partition].p_fstype == FS_UNUSED) && !(od->od_flags & BD_FLOPPY)) DEBUG("warning, partition marked as unused"); #endif od->od_boff = lp->d_partitions[dev->d_kind.biosdisk.partition].p_offset - lp->d_partitions[RAW_PART].p_offset + sector; } return (0); } /* * Search for a slice with the following preferences: * * 1: Active FreeBSD slice * 2: Non-active FreeBSD slice * 3: Active Linux slice * 4: non-active Linux slice * 5: Active FAT/FAT32 slice * 6: non-active FAT/FAT32 slice */ #define PREF_RAWDISK 0 #define PREF_FBSD_ACT 1 #define PREF_FBSD 2 #define PREF_LINUX_ACT 3 #define PREF_LINUX 4 #define PREF_DOS_ACT 5 #define PREF_DOS 6 #define PREF_NONE 7 /* * slicelimit is in the range 0 .. PC98_NPARTS */ static int bd_bestslice(struct open_disk *od) { struct pc98_partition *dp; int pref, preflevel; int i, prefslice; prefslice = 0; preflevel = PREF_NONE; dp = &od->od_slicetab[0]; for (i = 0; i < od->od_nslices; i++, dp++) { switch(dp->dp_mid & PC98_MID_MASK) { case PC98_MID_386BSD: /* FreeBSD */ if ((dp->dp_mid & PC98_MID_BOOTABLE) && (preflevel > PREF_FBSD_ACT)) { pref = i; preflevel = PREF_FBSD_ACT; } else if (preflevel > PREF_FBSD) { pref = i; preflevel = PREF_FBSD; } break; case 0x11: /* DOS/Windows */ case 0x20: case 0x21: case 0x22: case 0x23: case 0x63: if ((dp->dp_mid & PC98_MID_BOOTABLE) && (preflevel > PREF_DOS_ACT)) { pref = i; preflevel = PREF_DOS_ACT; } else if (preflevel > PREF_DOS) { pref = i; preflevel = PREF_DOS; } break; } } return (prefslice); } static int bd_close(struct open_file *f) { struct open_disk *od = (struct open_disk *)(((struct i386_devdesc *)(f->f_devdata))->d_kind.biosdisk.data); bd_closedisk(od); return(0); } static void bd_closedisk(struct open_disk *od) { DEBUG("open_disk %p", od); #if 0 /* XXX is this required? (especially if disk already open...) */ if (od->od_flags & BD_FLOPPY) delay(3000000); #endif free(od); } static int bd_strategy(void *devdata, int rw, daddr_t dblk, size_t size, char *buf, size_t *rsize) { struct bcache_devdata bcd; struct open_disk *od = (struct open_disk *)(((struct i386_devdesc *)devdata)->d_kind.biosdisk.data); bcd.dv_strategy = bd_realstrategy; bcd.dv_devdata = devdata; return(bcache_strategy(&bcd, od->od_unit, rw, dblk+od->od_boff, size, buf, rsize)); } static int bd_realstrategy(void *devdata, int rw, daddr_t dblk, size_t size, char *buf, size_t *rsize) { struct open_disk *od = (struct open_disk *)(((struct i386_devdesc *)devdata)->d_kind.biosdisk.data); int blks; #ifdef BD_SUPPORT_FRAGS char fragbuf[BIOSDISK_SECSIZE]; size_t fragsize; fragsize = size % BIOSDISK_SECSIZE; #else if (size % BIOSDISK_SECSIZE) panic("bd_strategy: %d bytes I/O not multiple of block size", size); #endif DEBUG("open_disk %p", od); blks = size / BIOSDISK_SECSIZE; if (rsize) *rsize = 0; switch(rw){ case F_READ: DEBUG("read %d from %d to %p", blks, dblk, buf); if (blks && bd_read(od, dblk, blks, buf)) { DEBUG("read error"); return (EIO); } #ifdef BD_SUPPORT_FRAGS DEBUG("bd_strategy: frag read %d from %d+%d to %p", fragsize, dblk, blks, buf + (blks * BIOSDISK_SECSIZE)); if (fragsize && bd_read(od, dblk + blks, 1, fragsize)) { DEBUG("frag read error"); return(EIO); } bcopy(fragbuf, buf + (blks * BIOSDISK_SECSIZE), fragsize); #endif break; case F_WRITE : DEBUG("write %d from %d to %p", blks, dblk, buf); if (blks && bd_write(od, dblk, blks, buf)) { DEBUG("write error"); return (EIO); } #ifdef BD_SUPPORT_FRAGS if(fragsize) { DEBUG("Attempted to write a frag"); return (EIO); } #endif break; default: /* DO NOTHING */ return (EROFS); } if (rsize) *rsize = size; return (0); } /* Max number of sectors to bounce-buffer if the request crosses a 64k boundary */ #define FLOPPY_BOUNCEBUF 18 static int bd_chs_io(struct open_disk *od, daddr_t dblk, int blks, caddr_t dest, int write) { u_int x, bpc, cyl, hd, sec; bpc = (od->od_sec * od->od_hds); /* blocks per cylinder */ x = dblk; cyl = x / bpc; /* block # / blocks per cylinder */ x %= bpc; /* block offset into cylinder */ hd = x / od->od_sec; /* offset / blocks per track */ sec = x % od->od_sec; /* offset into track */ v86.ctl = V86_FLAGS; v86.addr = 0x1b; if (write) v86.eax = 0x0500 | od->od_unit; else v86.eax = 0x0600 | od->od_unit; if (od->od_flags & BD_FLOPPY) { v86.eax |= 0xd000; v86.ecx = 0x0200 | (cyl & 0xff); v86.edx = (hd << 8) | (sec + 1); } else if (od->od_flags & BD_OPTICAL) { v86.eax &= 0xFF7F; v86.ecx = dblk & 0xFFFF; v86.edx = dblk >> 16; } else { v86.ecx = cyl; v86.edx = (hd << 8) | sec; } v86.ebx = blks * BIOSDISK_SECSIZE; v86.es = VTOPSEG(dest); v86.ebp = VTOPOFF(dest); v86int(); - return (v86.efl & 0x1); + return (V86_CY(v86.efl)); } static int bd_io(struct open_disk *od, daddr_t dblk, int blks, caddr_t dest, int write) { u_int x, sec, result, resid, retry, maxfer; caddr_t p, xp, bbuf, breg; /* Just in case some idiot actually tries to read/write -1 blocks... */ if (blks < 0) return (-1); resid = blks; p = dest; /* Decide whether we have to bounce */ if (VTOP(dest) >> 20 != 0 || ((VTOP(dest) >> 16) != (VTOP(dest + blks * BIOSDISK_SECSIZE) >> 16))) { /* * There is a 64k physical boundary somewhere in the * destination buffer, or the destination buffer is above * first 1MB of physical memory so we have to arrange a * suitable bounce buffer. Allocate a buffer twice as large * as we need to. Use the bottom half unless there is a break * there, in which case we use the top half. */ x = min(od->od_sec, (unsigned)blks); bbuf = alloca(x * 2 * BIOSDISK_SECSIZE); if (((u_int32_t)VTOP(bbuf) & 0xffff0000) == ((u_int32_t)VTOP(bbuf + x * BIOSDISK_SECSIZE) & 0xffff0000)) { breg = bbuf; } else { breg = bbuf + x * BIOSDISK_SECSIZE; } maxfer = x; /* limit transfers to bounce region size */ } else { breg = bbuf = NULL; maxfer = 0; } while (resid > 0) { /* * Play it safe and don't cross track boundaries. * (XXX this is probably unnecessary) */ sec = dblk % od->od_sec; /* offset into track */ x = min(od->od_sec - sec, resid); if (maxfer > 0) x = min(x, maxfer); /* fit bounce buffer */ /* where do we transfer to? */ xp = bbuf == NULL ? p : breg; /* * Put your Data In, Put your Data out, * Put your Data In, and shake it all about */ if (write && bbuf != NULL) bcopy(p, breg, x * BIOSDISK_SECSIZE); /* * Loop retrying the operation a couple of times. The BIOS * may also retry. */ for (retry = 0; retry < 3; retry++) { /* if retrying, reset the drive */ if (retry > 0) { v86.ctl = V86_FLAGS; v86.addr = 0x1b; v86.eax = 0x0300 | od->od_unit; v86int(); } result = bd_chs_io(od, dblk, x, xp, write); if (result == 0) break; } if (write) DEBUG("Write %d sector(s) from %p (0x%x) to %lld %s", x, p, VTOP(p), dblk, result ? "failed" : "ok"); else DEBUG("Read %d sector(s) from %lld to %p (0x%x) %s", x, dblk, p, VTOP(p), result ? "failed" : "ok"); if (result) { return(-1); } if (!write && bbuf != NULL) bcopy(breg, p, x * BIOSDISK_SECSIZE); p += (x * BIOSDISK_SECSIZE); dblk += x; resid -= x; } /* hexdump(dest, (blks * BIOSDISK_SECSIZE)); */ return(0); } static int bd_read(struct open_disk *od, daddr_t dblk, int blks, caddr_t dest) { return (bd_io(od, dblk, blks, dest, 0)); } static int bd_write(struct open_disk *od, daddr_t dblk, int blks, caddr_t dest) { return (bd_io(od, dblk, blks, dest, 1)); } static int bd_getgeom(struct open_disk *od) { if (od->od_flags & BD_FLOPPY) { od->od_cyl = 79; od->od_hds = 2; od->od_sec = (od->od_unit & 0xf0) == 0x30 ? 18 : 15; } else if (od->od_flags & BD_OPTICAL) { od->od_cyl = 0xFFFE; od->od_hds = 8; od->od_sec = 32; } else { v86.ctl = V86_FLAGS; v86.addr = 0x1b; v86.eax = 0x8400 | od->od_unit; v86int(); od->od_cyl = v86.ecx; od->od_hds = (v86.edx >> 8) & 0xff; od->od_sec = v86.edx & 0xff; - if (v86.efl & 0x1) + if (V86_CY(v86.efl)) return(1); } DEBUG("unit 0x%x geometry %d/%d/%d", od->od_unit, od->od_cyl, od->od_hds, od->od_sec); return(0); } /* * Return the BIOS geometry of a given "fixed drive" in a format * suitable for the legacy bootinfo structure. Since the kernel is * expecting raw int 0x13/0x8 values for N_BIOS_GEOM drives, we * prefer to get the information directly, rather than rely on being * able to put it together from information already maintained for * different purposes and for a probably different number of drives. * * For valid drives, the geometry is expected in the format (31..0) * "000000cc cccccccc hhhhhhhh 00ssssss"; and invalid drives are * indicated by returning the geometry of a "1.2M" PC-format floppy * disk. And, incidentally, what is returned is not the geometry as * such but the highest valid cylinder, head, and sector numbers. */ u_int32_t bd_getbigeom(int bunit) { int hds = 0; int unit = 0x80; /* IDE HDD */ u_int addr = 0xA155d; while (unit < 0xa7) { if (*(u_char *)PTOV(addr) & (1 << (unit & 0x0f))) if (hds++ == bunit) break; if (unit >= 0xA0) { int media = ((unsigned *)PTOV(0xA1460))[unit & 0x0F] & 0x1F; if (media == 7 && hds++ == bunit) /* SCSI MO */ return(0xFFFE0820); /* C:65535 H:8 S:32 */ } if (++unit == 0x84) { unit = 0xA0; /* SCSI HDD */ addr = 0xA1482; } } if (unit == 0xa7) return 0x4F020F; /* 1200KB FD C:80 H:2 S:15 */ v86.ctl = V86_FLAGS; v86.addr = 0x1b; v86.eax = 0x8400 | unit; v86int(); - if (v86.efl & 0x1) + if (V86_CY(v86.efl)) return 0x4F020F; /* 1200KB FD C:80 H:2 S:15 */ return ((v86.ecx & 0xffff) << 16) | (v86.edx & 0xffff); } /* * Return a suitable dev_t value for (dev). * * In the case where it looks like (dev) is a SCSI disk, we allow the number of * IDE disks to be specified in $num_ide_disks. There should be a Better Way. */ int bd_getdev(struct i386_devdesc *dev) { struct open_disk *od; int biosdev; int major; int rootdev; char *nip, *cp; int unitofs = 0, i, unit; biosdev = bd_unit2bios(dev->d_unit); DEBUG("unit %d BIOS device %d", dev->d_unit, biosdev); if (biosdev == -1) /* not a BIOS device */ return(-1); if (bd_opendisk(&od, dev) != 0) /* oops, not a viable device */ return(-1); if ((biosdev & 0xf0) == 0x90 || (biosdev & 0xf0) == 0x30) { /* floppy (or emulated floppy) or ATAPI device */ if (bdinfo[dev->d_unit].bd_type == DT_ATAPI) { /* is an ATAPI disk */ major = WFDMAJOR; } else { /* is a floppy disk */ major = FDMAJOR; } } else { /* harddisk */ if ((od->od_flags & BD_LABELOK) && (od->od_disklabel.d_type == DTYPE_SCSI)) { /* label OK, disk labelled as SCSI */ major = DAMAJOR; /* check for unit number correction hint, now deprecated */ if ((nip = getenv("num_ide_disks")) != NULL) { i = strtol(nip, &cp, 0); /* check for parse error */ if ((cp != nip) && (*cp == 0)) unitofs = i; } } else { /* assume an IDE disk */ major = WDMAJOR; } } /* default root disk unit number */ if ((biosdev & 0xf0) == 0xa0) unit = bdinfo[dev->d_unit].bd_da_unit; else unit = biosdev & 0xf; /* XXX a better kludge to set the root disk unit number */ if ((nip = getenv("root_disk_unit")) != NULL) { i = strtol(nip, &cp, 0); /* check for parse error */ if ((cp != nip) && (*cp == 0)) unit = i; } rootdev = MAKEBOOTDEV(major, dev->d_kind.biosdisk.slice + 1, unit, dev->d_kind.biosdisk.partition); DEBUG("dev is 0x%x\n", rootdev); return(rootdev); } Index: stable/10 =================================================================== --- stable/10 (revision 294479) +++ stable/10 (revision 294480) Property changes on: stable/10 ___________________________________________________________________ Modified: svn:mergeinfo ## -0,0 +0,1 ## Merged /head:r292682