*
* @APPLE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
// how long to wait for matching root device, secs
#define ROOTDEVICETIMEOUT 60
+extern dev_t mdevadd(int devid, ppnum_t base, unsigned int size, int phys);
+extern dev_t mdevlookup(int devid);
kern_return_t
IOKitBSDInit( void )
}
+static int didRam = 0;
+
kern_return_t IOFindBSDRoot( char * rootName,
dev_t * root, u_int32_t * oflags )
{
OSString * iostr;
OSNumber * off;
OSData * data = 0;
+ UInt32 *ramdParms = 0;
UInt32 flags = 0;
int minor, major;
bool debugInfoPrintedOnce = false;
static int mountAttempts = 0;
+
+ int xchar, dchar;
+
if( mountAttempts++)
IOSleep( 5 * 1000 );
do {
if( (regEntry = IORegistryEntry::fromPath( "/chosen", gIODTPlane ))) {
- data = (OSData *) regEntry->getProperty( "rootpath" );
- regEntry->release();
- if( data)
- continue;
- }
+ data = (OSData *) regEntry->getProperty( "rootpath" );
+ regEntry->release();
+ if( data) continue;
+ }
if( (regEntry = IORegistryEntry::fromPath( "/options", gIODTPlane ))) {
- data = (OSData *) regEntry->getProperty( "boot-file" );
- regEntry->release();
- if( data)
- continue;
- }
+ data = (OSData *) regEntry->getProperty( "boot-file" );
+ regEntry->release();
+ if( data) continue;
+ }
} while( false );
if( data)
if( rdBootVar[0] == '*') {
look = rdBootVar + 1;
- forceNet = false;
+ forceNet = false;
} else {
if( (regEntry = IORegistryEntry::fromPath( "/", gIODTPlane ))) {
forceNet = (0 != regEntry->getProperty( "net-boot" ));
- regEntry->release();
- }
+ regEntry->release();
+ }
}
+
+
+//
+// See if we have a RAMDisk property in /chosen/memory-map. If so, make it into a device.
+// It will become /dev/mdx, where x is 0-f.
+//
+
+ if(!didRam) { /* Have we already build this ram disk? */
+ didRam = 1; /* Remember we did this */
+ if((regEntry = IORegistryEntry::fromPath( "/chosen/memory-map", gIODTPlane ))) { /* Find the map node */
+ data = (OSData *)regEntry->getProperty("RAMDisk"); /* Find the ram disk, if there */
+ if(data) { /* We found one */
+
+ ramdParms = (UInt32 *)data->getBytesNoCopy(); /* Point to the ram disk base and size */
+ (void)mdevadd(-1, ramdParms[0] >> 12, ramdParms[1] >> 12, 0); /* Initialize it and pass back the device number */
+ }
+ regEntry->release(); /* Toss the entry */
+ }
+ }
+
+//
+// Now check if we are trying to root on a memory device
+//
+
+ if((rdBootVar[0] == 'm') && (rdBootVar[1] == 'd') && (rdBootVar[3] == 0)) {
+ dchar = xchar = rdBootVar[2]; /* Get the actual device */
+ if((xchar >= '0') && (xchar <= '9')) xchar = xchar - '0'; /* If digit, convert */
+ else {
+ xchar = xchar & ~' '; /* Fold to upper case */
+ if((xchar >= 'A') && (xchar <= 'F')) { /* Is this a valid digit? */
+ xchar = (xchar & 0xF) + 9; /* Convert the hex digit */
+ dchar = dchar | ' '; /* Fold to lower case */
+ }
+ else xchar = -1; /* Show bogus */
+ }
+ if(xchar >= 0) { /* Do we have a valid memory device name? */
+ *root = mdevlookup(xchar); /* Find the device number */
+ if(*root >= 0) { /* Did we find one? */
+
+ rootName[0] = 'm'; /* Build root name */
+ rootName[1] = 'd'; /* Build root name */
+ rootName[2] = dchar; /* Build root name */
+ rootName[3] = 0; /* Build root name */
+ IOLog("BSD root: %s, major %d, minor %d\n", rootName, major(*root), minor(*root));
+ *oflags = 0; /* Show that this is not network */
+ goto iofrootx; /* Join common exit... */
+ }
+ panic("IOFindBSDRoot: specified root memory device, %s, has not been configured\n", rdBootVar); /* Not there */
+ }
+ }
+
if( look) {
// from OpenFirmware path
IOLog("From path: \"%s\", ", look);
matching = IODiskMatching( look, str, kMaxPathBuf );
}
}
-
- if( (!matching) && rdBootVar[0] ) {
+
+ if( (!matching) && rdBootVar[0] ) {
// by BSD name
look = rdBootVar;
if( look[0] == '*')
IOFree( str, kMaxPathBuf + kMaxBootVar );
+iofrootx:
if( (gIOKitDebug & (kIOLogDTree | kIOLogServiceTree | kIOLogMemory)) && !debugInfoPrintedOnce) {
IOService::getPlatform()->waitQuiet();
projects / apple / xnu.git / blobdiff