diff options
| author | Thierry Deval <tdeval@cvs.openbsd.org> | 2001-12-05 23:58:42 +0000 |
|---|---|---|
| committer | Thierry Deval <tdeval@cvs.openbsd.org> | 2001-12-05 23:58:42 +0000 |
| commit | 41bc9e864940c498f11169f1b63c082c057d8534 (patch) | |
| tree | 2183e20ba9a198c0a2f432da175beb4a12b4bae0 /sys/arch/alpha | |
| parent | 03573bfb57ddd4be432cfa80b3e1fa1405abcc13 (diff) | |
Enable rootdev auto-configuration by device drivers during boot.
Add support for "raid" devices (prepare future raidframe changes).
OK deraadt@, Reviewed by drahn@, jason@, mickey@ and miod@
Diffstat (limited to 'sys/arch/alpha')
| -rw-r--r-- | sys/arch/alpha/alpha/autoconf.c | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/sys/arch/alpha/alpha/autoconf.c b/sys/arch/alpha/alpha/autoconf.c index b50cbc30ee1..abf0bc3096d 100644 --- a/sys/arch/alpha/alpha/autoconf.c +++ b/sys/arch/alpha/alpha/autoconf.c @@ -1,4 +1,4 @@ -/* $OpenBSD: autoconf.c,v 1.14 2001/09/30 13:08:45 art Exp $ */ +/* $OpenBSD: autoconf.c,v 1.15 2001/12/05 23:58:41 tdeval Exp $ */ /* $NetBSD: autoconf.c,v 1.16 1996/11/13 21:13:04 cgd Exp $ */ /* @@ -77,8 +77,8 @@ static struct device *parsedisk __P((char *str, int len, int defpart, dev_t *devp)); static struct device *getdisk __P((char *str, int len, int defpart, dev_t *devp)); -static int findblkmajor __P((struct device *dv)); -static char *findblkname __P((int)); +int findblkmajor __P((struct device *dv)); +char *findblkname __P((int)); static int getstr __P((char *cp, int size)); /* @@ -145,6 +145,7 @@ struct nam2blk { { "rd", 6 }, { "sd", 8 }, { "wd", 0 }, + { "raid", 16 }, #if 0 { "fd", XXX }, #endif @@ -154,25 +155,25 @@ struct nam2blk { static struct device fakerdrootdev = { DV_DISK, {}, NULL, 0, "rd0", NULL }; #endif -static int +int findblkmajor(dv) struct device *dv; { char *name = dv->dv_xname; - register int i; + int i; for (i = 0; i < sizeof(nam2blk)/sizeof(nam2blk[0]); ++i) - if (strncmp(name, nam2blk[i].name, strlen(nam2blk[0].name)) + if (strncmp(name, nam2blk[i].name, strlen(nam2blk[i].name)) == 0) return (nam2blk[i].maj); return (-1); } -static char * +char * findblkname(maj) int maj; { - register int i; + int i; for (i = 0; i < sizeof(nam2blk)/sizeof(nam2blk[0]); ++i) if (maj == nam2blk[i].maj) @@ -276,7 +277,7 @@ setroot() { struct swdevt *swp; struct device *dv; - register int len; + int len; dev_t nrootdev, nswapdev = NODEV; char buf[128], *rootdevname; dev_t temp; @@ -295,6 +296,22 @@ setroot() #endif /* + * (raid) device auto-configuration could have returned + * the root device's id in rootdev. Check this case. + */ + if (rootdev != NODEV) { + majdev = major(rootdev); + unit = DISKUNIT(rootdev); + part = DISKPART(rootdev); + + len = sprintf(buf, "%s%d", findblkname(majdev), unit); + if (len >= sizeof(buf)) + panic("setroot: device name too long"); + + bootdv = getdisk(buf, len, part, &rootdev); + } + + /* * If 'swap generic' and we couldn't determine root device, * ask the user. */ |