setroot() was a ugly mix of MI and MD code, with different bugs on different

machines.  Instead -- build one solid clean MI version, and thenchange all
the architectures to use it.  ok various people, tested on almost all cases.
(it is a 10094 line diff..)

1 files changed, 55 insertions, 365 deletions

diff --git a/sys/arch/armish/armish/autoconf.c b/sys/arch/armish/armish/autoconf.c
index 28c77062a26..7cf951d39b1 100644
--- a/sys/arch/armish/armish/autoconf.c
+++ b/sys/arch/armish/armish/autoconf.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: autoconf.c,v 1.4 2006/07/30 23:16:52 deraadt Exp $	*/
+/*	$OpenBSD: autoconf.c,v 1.5 2007/05/04 03:44:44 deraadt Exp $	*/
 /*	$NetBSD: autoconf.c,v 1.2 2001/09/05 16:17:36 matt Exp $	*/
 
 /*
@@ -49,155 +49,19 @@
 #include <sys/conf.h>
 #include <sys/kernel.h>
 #include <sys/malloc.h>
+
+#include <uvm/uvm_extern.h>
+
 #include <machine/bootconfig.h>
 #include <machine/intr.h>
-
 #include <dev/cons.h>
 
-
 struct device *booted_device;
 int booted_partition;
-
 struct device *bootdv = NULL;
-
-int findblkmajor(struct device *dv);
-char *findblkname(int maj);
-
-void rootconf(void);
-void diskconf(void);
-
-static struct device * getdisk(char *str, int len, int defpart, dev_t *devp);
-struct  device *parsedisk(char *, int, int, dev_t *);
 extern char *boot_file;
 
-#include "wd.h"
-#if NWD > 0  
-extern  struct cfdriver wd_cd;
-#endif
-#include "sd.h"
-#if NSD > 0
-extern  struct cfdriver sd_cd;
-#endif
-#include "cd.h"
-#if NCD > 0
-extern  struct cfdriver cd_cd;
-#endif
-#if NRD > 0
-extern  struct cfdriver rd_cd;
-#endif
-#include "raid.h"
-#if NRAID > 0
-extern  struct cfdriver raid_cd;
-#endif
-
-struct  genericconf {
-	char *gc_name;
-	dev_t gc_major;
-} genericconf[] = {
-#if NWD > 0
-	{ "wd",  16 },
-#endif
-#if NSD > 0
-	{ "sd",  24 },
-#endif
-#if NCD > 0
-	{ "cd",  26 },
-#endif
-#if NRD > 0
-	{ "rd",  18 },
-#endif
-#if NRAID > 0
-	{ "raid",  71 },
-#endif
-	{ 0 }
-};
-
-int
-findblkmajor(dv)
-	struct device *dv;
-{
-	char *name = dv->dv_xname;
-	int i;
-
-	for (i = 0; i < sizeof(genericconf)/sizeof(genericconf[0]); ++i)
-		if (strncmp(name, genericconf[i].gc_name,
-		    strlen(genericconf[i].gc_name)) == 0)
-			return (genericconf[i].gc_major);
-	return (-1);
-}
-
-char *
-findblkname(maj)
-	int maj;
-{
-	int i;
-
-	for (i = 0; i < sizeof(genericconf)/sizeof(genericconf[0]); ++i)
-		if (maj == genericconf[i].gc_major)
-			return (genericconf[i].gc_name);
-	return (NULL);
-}
-
-static struct device *
-getdisk(char *str, int len, int defpart, dev_t *devp)
-{
-	struct device *dv;
-
-	if ((dv = parsedisk(str, len, defpart, devp)) == NULL) {
-		printf("use one of: reboot");
-		for (dv = alldevs.tqh_first; dv != NULL;
-		    dv = dv->dv_list.tqe_next) {
-			if (dv->dv_class == DV_DISK)
-				printf(" %s[a-p]", dv->dv_xname);
-#ifdef NFSCLIENT
-			if (dv->dv_class == DV_IFNET)
-				printf(" %s", dv->dv_xname);
-#endif
-		}
-		printf("\n");
-	}
-	return (dv);
-}
-
-struct device *
-parsedisk(char *str, int len, int defpart, dev_t *devp)
-{
-	struct device *dv;
-	char *cp, c;
-	int majdev, part;
-
-	if (len == 0)
-		return (NULL);
-	cp = str + len - 1;
-	c = *cp;
-	if (c >= 'a' && (c - 'a') < MAXPARTITIONS) {
-		part = c - 'a';
-		*cp = '\0';
-	} else
-		part = defpart;
-
-	for (dv = alldevs.tqh_first; dv != NULL; dv = dv->dv_list.tqe_next) {
-		if (dv->dv_class == DV_DISK &&
-		    strcmp(str, dv->dv_xname) == 0) {
-			majdev = findblkmajor(dv);
-			if (majdev < 0)
-				panic("parsedisk");
-			*devp = MAKEDISKDEV(majdev, dv->dv_unit, part);
-			break;
-		}
-#ifdef NFSCLIENT
-		if (dv->dv_class == DV_IFNET &&
-		    strcmp(str, dv->dv_xname) == 0) {
-			*devp = NODEV;
-			break;
-		}
-#endif
-	}
-
-	*cp = c;
-	return (dv);
-}
-
+void diskconf(void);
 
 /*
  * Now that we are fully operational, we can checksum the
@@ -207,6 +71,9 @@ parsedisk(char *str, int len, int defpart, dev_t *devp)
 void
 diskconf()
 {
+	dev_t tmpdev;
+
+#if 0
 	/*
 	 * Configure root, swap, and dump area.  This is
 	 * currently done by running the same checksum
@@ -214,11 +81,27 @@ diskconf()
 	 * /boot.  Then we basically fixup the *dev vars
 	 * from the info we gleaned from this.
 	 */
-#if 0
 	dkcsumattach();
-
 #endif
-	rootconf();
+
+	/* Lookup boot device from boot if not set by configuration */
+	if (bootdv == NULL) {
+		int len;
+		char *p;
+
+		/* boot_file is of the form wd0a:/bsd, we want 'wd0a' */
+		if ((p = strchr(boot_file, ':')) != NULL)
+			len = p - boot_file;
+		else
+			len = strlen(boot_file);
+		
+		bootdv = parsedisk(boot_file, len, 0, &tmpdev);
+	}
+	if (bootdv == NULL)
+		printf("boot device: lookup '%s' failed.\n", boot_file);
+	else
+		printf("boot device: %s\n", bootdv->dv_xname);
+	setroot(bootdv, 0, RB_USERREQ);
 #if 0
 	dumpconf();
 #endif
@@ -257,229 +140,36 @@ cpu_configure(void)
 
 }
 
-/*
- * Attempt to find the device from which we were booted.
- * If we can do so, and not instructed not to do so,
- * change rootdev to correspond to the load device.
- */
-void
-rootconf()
-{
-	int  majdev, mindev, unit, part, len;
-	dev_t temp;
-	struct swdevt *swp;
-	struct device *dv;
-	dev_t nrootdev, nswapdev = NODEV;
-	char buf[128];
-	int s;
-
-#if defined(NFSCLIENT)
-	extern char *nfsbootdevname;
-#endif
-
-	if (boothowto & RB_DFLTROOT)
-		return;		/* Boot compiled in */
-
-	/*
-	 * (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 = snprintf(buf, sizeof buf, "%s%d", findblkname(majdev),
-			unit);
-		if (len == -1 || len >= sizeof(buf))
-			panic("rootconf: device name too long");
-
-		bootdv = getdisk(buf, len, part, &rootdev);
-	}
-
-	/* Lookup boot device from boot if not set by configuration */
-	if (bootdv == NULL) {
-		int len;
-		char *p;
-
-		/* boot_file is of the form wd0a:/bsd, we want 'wd0a' */
-		if ((p = strchr(boot_file, ':')) != NULL)
-			len = p - boot_file;
-		else
-			len = strlen(boot_file);
-		
-		bootdv = parsedisk(boot_file, len, 0, &temp);
-	}
-	if (bootdv == NULL) {
-		printf("boot device: lookup '%s' failed.\n", boot_file);
-		boothowto |= RB_ASKNAME; /* Don't Panic :-) */
-		/* boothowto |= RB_SINGLE; */
-	} else
-		printf("boot device: %s.\n", bootdv->dv_xname);
-
-	if (boothowto & RB_ASKNAME) {
-		for (;;) {
-			printf("root device ");
-			if (bootdv != NULL)
-				 printf("(default %s%c)",
-					bootdv->dv_xname,
-					bootdv->dv_class == DV_DISK
-						? 'a' : ' ');
-			printf(": ");
-			s = splhigh();
-			cnpollc(1);
-			len = getsn(buf, sizeof(buf));
-
-			cnpollc(0);
-			splx(s);
-			if (len == 0 && bootdv != NULL) {
-				strlcpy(buf, bootdv->dv_xname, sizeof buf);
-				len = strlen(buf);
-			}
-			if (len > 0 && buf[len - 1] == '*') {
-				buf[--len] = '\0';
-				dv = getdisk(buf, len, 1, &nrootdev);
-				if (dv != NULL) {
-					bootdv = dv;
-					nswapdev = nrootdev;
-					goto gotswap;
-				}
-			}
-
-			if ((len == 6) && strncmp(buf, "reboot", 6) == 0)
-				boot(RB_USERREQ);
-
-			dv = getdisk(buf, len, 0, &nrootdev);
-			if (dv != NULL) {
-				bootdv = dv;
-				break;
-			}
-		}
-		/*
-		 * because swap must be on same device as root, for
-		 * network devices this is easy.
-		 */
-		if (bootdv->dv_class == DV_IFNET)
-			goto gotswap;
-
-		for (;;) {
-			printf("swap device ");
-			if (bootdv != NULL)
-				printf("(default %s%c)",
-					bootdv->dv_xname,
-					bootdv->dv_class == DV_DISK?'b':' ');
-			printf(": ");
-			s = splhigh();
-			cnpollc(1);
-			len = getsn(buf, sizeof(buf));
-			cnpollc(0);
-			splx(s);
-			if (len == 0 && bootdv != NULL) {
-				switch (bootdv->dv_class) {
-				case DV_IFNET:
-					nswapdev = NODEV;
-					break;
-				case DV_DISK:
-					nswapdev = MAKEDISKDEV(major(nrootdev),
-					    DISKUNIT(nrootdev), 1);
-					break;
-				case DV_TAPE:
-				case DV_TTY:
-				case DV_DULL:
-				case DV_CPU:
-					break;
-				}
-				break;
-			}
-			dv = getdisk(buf, len, 1, &nswapdev);
-			if (dv) {
-				if (dv->dv_class == DV_IFNET)
-					nswapdev = NODEV;
-				break;
-			}
-		}
-
-gotswap:
-		rootdev = nrootdev;
-		dumpdev = nswapdev;
-		swdevt[0].sw_dev = nswapdev;
-		swdevt[1].sw_dev = NODEV;
-	} else if (mountroot == NULL) {
-		/*
-		 * `swap generic': Use the device the ROM told us to use.
-		 */
-		if (bootdv == NULL)
-			panic("boot device not known");
-
-		majdev = findblkmajor(bootdv);
-
-		if (majdev >= 0) {
-			/*
-			 * Root and Swap are on disk.
-			 * Boot is always from partition 0.
-			 */
-			rootdev = MAKEDISKDEV(majdev, bootdv->dv_unit, 0);
-			nswapdev = MAKEDISKDEV(majdev, bootdv->dv_unit, 1);
-			dumpdev = nswapdev;
-		} else {
-			/*
-			 *  Root and Swap are on net.
-			 */
-			nswapdev = dumpdev = NODEV;
-		}
-		swdevt[0].sw_dev = nswapdev;
-		swdevt[1].sw_dev = NODEV;
-
-	} else {
+static struct {
+	char	*name;
+	int	maj;
+} nam2blk[] = {
+	{ "wd",		16 },
+	{ "sd",		24 },
+	{ "cd",		26 },
+	{ "rd",		18 },
+	{ "raid",	71 }
+};
 
-		/*
-		 * `root DEV swap DEV': honour rootdev/swdevt.
-		 * rootdev/swdevt/mountroot already properly set.
-		 */
-		return;
-	}
+int
+findblkmajor(struct device *dv)
+{
+	char *name = dv->dv_xname;
+	int i;
 
-	switch (bootdv->dv_class) {
-#if defined(NFSCLIENT)
-	case DV_IFNET:
-		mountroot = nfs_mountroot;
-		nfsbootdevname = bootdv->dv_xname;
-		return;
-#endif
-	case DV_DISK:
-		mountroot = dk_mountroot;
-		majdev = major(rootdev);
-		mindev = minor(rootdev);
-		unit = DISKUNIT(rootdev);
-		part = DISKPART(rootdev);
-		printf("root on %s%c\n", bootdv->dv_xname, part + 'a');
-		break;
-	default:
-		printf("can't figure root, hope your kernel is right\n");
-		return;
-	}
+	for (i = 0; i < sizeof(nam2blk)/sizeof(nam2blk[0]); i++)
+		if (!strncmp(name, nam2blk[i].name, strlen(nam2blk[i].name)))
+			return (nam2blk[i].maj);
+	return (-1);
+}
 
-	/*
-	 * XXX: What is this doing?
-	 */
-	temp = NODEV;
-	for (swp = swdevt; swp->sw_dev != NODEV; swp++) {
-		if (majdev == major(swp->sw_dev) &&
-		    unit == DISKUNIT(swp->sw_dev)) {
-			temp = swdevt[0].sw_dev;
-			swdevt[0].sw_dev = swp->sw_dev;
-			swp->sw_dev = temp;
-			break;
-		}
-	}
-	if (swp->sw_dev == NODEV)
-		return;
+char *
+findblkname(int maj)
+{
+	int i;
 
-	/*
-	 * If dumpdev was the same as the old primary swap device, move
-	 * it to the new primary swap device.
-	 */
-	if (temp == dumpdev)
-		dumpdev = swdevt[0].sw_dev;
+	for (i = 0; i < sizeof(nam2blk)/sizeof(nam2blk[0]); i++)
+		if (nam2blk[i].maj == maj)
+			return (nam2blk[i].name);
+	return (NULL);
 }
-/* End of autoconf.c */