main.c (4784aef9f55a4c8284ee951bb30b70f9ba8b7698) main.c (de04d704a98a7d2e9e57ebd83d2dd7a19fc11dab)
1/*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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249{
250 struct i386_devdesc new_currdev;
251#ifdef LOADER_ZFS_SUPPORT
252 char buf[20];
253#endif
254 int biosdev = -1;
255
256 /* Assume we are booting from a BIOS disk by default */
1/*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 240 unchanged lines hidden (view full) ---

249{
250 struct i386_devdesc new_currdev;
251#ifdef LOADER_ZFS_SUPPORT
252 char buf[20];
253#endif
254 int biosdev = -1;
255
256 /* Assume we are booting from a BIOS disk by default */
257 new_currdev.d_dev = &biosdisk;
257 new_currdev.dd.d_dev = &biosdisk;
258
259 /* new-style boot loaders such as pxeldr and cdldr */
260 if (kargs->bootinfo == 0) {
261 if ((kargs->bootflags & KARGS_FLAGS_CD) != 0) {
262 /* we are booting from a CD with cdboot */
258
259 /* new-style boot loaders such as pxeldr and cdldr */
260 if (kargs->bootinfo == 0) {
261 if ((kargs->bootflags & KARGS_FLAGS_CD) != 0) {
262 /* we are booting from a CD with cdboot */
263 new_currdev.d_dev = &bioscd;
264 new_currdev.d_unit = bc_bios2unit(initial_bootdev);
263 new_currdev.dd.d_dev = &bioscd;
264 new_currdev.dd.d_unit = bc_bios2unit(initial_bootdev);
265 } else if ((kargs->bootflags & KARGS_FLAGS_PXE) != 0) {
266 /* we are booting from pxeldr */
265 } else if ((kargs->bootflags & KARGS_FLAGS_PXE) != 0) {
266 /* we are booting from pxeldr */
267 new_currdev.d_dev = &pxedisk;
268 new_currdev.d_unit = 0;
267 new_currdev.dd.d_dev = &pxedisk;
268 new_currdev.dd.d_unit = 0;
269 } else {
270 /* we don't know what our boot device is */
271 new_currdev.d_kind.biosdisk.slice = -1;
272 new_currdev.d_kind.biosdisk.partition = 0;
273 biosdev = -1;
274 }
275#ifdef LOADER_ZFS_SUPPORT
276 } else if ((kargs->bootflags & KARGS_FLAGS_ZFS) != 0) {

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290 sprintf(buf, "%llu", zargs->primary_vdev);
291 setenv("vfs.zfs.boot.primary_vdev", buf, 1);
292 }
293 } else {
294 /* old style zfsboot block */
295 new_currdev.d_kind.zfs.pool_guid = kargs->zfspool;
296 new_currdev.d_kind.zfs.root_guid = 0;
297 }
269 } else {
270 /* we don't know what our boot device is */
271 new_currdev.d_kind.biosdisk.slice = -1;
272 new_currdev.d_kind.biosdisk.partition = 0;
273 biosdev = -1;
274 }
275#ifdef LOADER_ZFS_SUPPORT
276 } else if ((kargs->bootflags & KARGS_FLAGS_ZFS) != 0) {

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290 sprintf(buf, "%llu", zargs->primary_vdev);
291 setenv("vfs.zfs.boot.primary_vdev", buf, 1);
292 }
293 } else {
294 /* old style zfsboot block */
295 new_currdev.d_kind.zfs.pool_guid = kargs->zfspool;
296 new_currdev.d_kind.zfs.root_guid = 0;
297 }
298 new_currdev.d_dev = &zfs_dev;
298 new_currdev.dd.d_dev = &zfs_dev;
299#endif
300 } else if ((initial_bootdev & B_MAGICMASK) != B_DEVMAGIC) {
301 /* The passed-in boot device is bad */
302 new_currdev.d_kind.biosdisk.slice = -1;
303 new_currdev.d_kind.biosdisk.partition = 0;
304 biosdev = -1;
305 } else {
306 new_currdev.d_kind.biosdisk.slice = B_SLICE(initial_bootdev) - 1;

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311 * If we are booted by an old bootstrap, we have to guess at the BIOS
312 * unit number. We will lose if there is more than one disk type
313 * and we are not booting from the lowest-numbered disk type
314 * (ie. SCSI when IDE also exists).
315 */
316 if ((biosdev == 0) && (B_TYPE(initial_bootdev) != 2)) /* biosdev doesn't match major */
317 biosdev = 0x80 + B_UNIT(initial_bootdev); /* assume harddisk */
318 }
299#endif
300 } else if ((initial_bootdev & B_MAGICMASK) != B_DEVMAGIC) {
301 /* The passed-in boot device is bad */
302 new_currdev.d_kind.biosdisk.slice = -1;
303 new_currdev.d_kind.biosdisk.partition = 0;
304 biosdev = -1;
305 } else {
306 new_currdev.d_kind.biosdisk.slice = B_SLICE(initial_bootdev) - 1;

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311 * If we are booted by an old bootstrap, we have to guess at the BIOS
312 * unit number. We will lose if there is more than one disk type
313 * and we are not booting from the lowest-numbered disk type
314 * (ie. SCSI when IDE also exists).
315 */
316 if ((biosdev == 0) && (B_TYPE(initial_bootdev) != 2)) /* biosdev doesn't match major */
317 biosdev = 0x80 + B_UNIT(initial_bootdev); /* assume harddisk */
318 }
319 new_currdev.d_type = new_currdev.d_dev->dv_type;
319 new_currdev.dd.d_type = new_currdev.dd.d_dev->dv_type;
320
321 /*
322 * If we are booting off of a BIOS disk and we didn't succeed in determining
323 * which one we booted off of, just use disk0: as a reasonable default.
324 */
320
321 /*
322 * If we are booting off of a BIOS disk and we didn't succeed in determining
323 * which one we booted off of, just use disk0: as a reasonable default.
324 */
325 if ((new_currdev.d_type == biosdisk.dv_type) &&
326 ((new_currdev.d_unit = bd_bios2unit(biosdev)) == -1)) {
325 if ((new_currdev.dd.d_type == biosdisk.dv_type) &&
326 ((new_currdev.dd.d_unit = bd_bios2unit(biosdev)) == -1)) {
327 printf("Can't work out which disk we are booting from.\n"
328 "Guessed BIOS device 0x%x not found by probes, defaulting to disk0:\n", biosdev);
327 printf("Can't work out which disk we are booting from.\n"
328 "Guessed BIOS device 0x%x not found by probes, defaulting to disk0:\n", biosdev);
329 new_currdev.d_unit = 0;
329 new_currdev.dd.d_unit = 0;
330 }
331
332#ifdef LOADER_ZFS_SUPPORT
330 }
331
332#ifdef LOADER_ZFS_SUPPORT
333 if (new_currdev.d_type == DEVT_ZFS)
333 if (new_currdev.dd.d_type == DEVT_ZFS)
334 init_zfs_bootenv(zfs_fmtdev(&new_currdev));
335#endif
336
337 env_setenv("currdev", EV_VOLATILE, i386_fmtdev(&new_currdev),
338 i386_setcurrdev, env_nounset);
339 env_setenv("loaddev", EV_VOLATILE, i386_fmtdev(&new_currdev), env_noset,
340 env_nounset);
341}

--- 69 unchanged lines hidden --- 		334 init_zfs_bootenv(zfs_fmtdev(&new_currdev));
335#endif
336
337 env_setenv("currdev", EV_VOLATILE, i386_fmtdev(&new_currdev),
338 i386_setcurrdev, env_nounset);
339 env_setenv("loaddev", EV_VOLATILE, i386_fmtdev(&new_currdev), env_noset,
340 env_nounset);
341}

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