xnu-792.25.20.tar.gz

[apple/xnu.git] / pexpert / ppc / pe_identify_machine.c

diff --git a/pexpert/ppc/pe_identify_machine.c b/pexpert/ppc/pe_identify_machine.c
index 2266416d746f4baeb56675651576e621737f9740..7b20bcdd738cef8b0169c138f1d4a7a5a1d62d2e 100644 (file)
--- a/pexpert/ppc/pe_identify_machine.c
+++ b/pexpert/ppc/pe_identify_machine.c
@@ -3,22 +3,19 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * 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.
  * 
- * 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
+ * This 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -26,10 +23,7 @@
 #include <pexpert/pexpert.h>
 #include <pexpert/ppc/powermac.h>
 #include <pexpert/device_tree.h>
-
-/* External declarations */
-
-unsigned int LockTimeOut = 12500000;
+#include <vm/pmap.h>
 
 /* pe_identify_machine:
  *
@@ -138,50 +132,51 @@ vm_offset_t get_io_base_addr(void)
   return 0;
 }
 
-boolean_t PE_init_ethernet_debugger(void)
+vm_offset_t PE_find_scc(void)
 {
-  boolean_t result;
-#if 0
-  DTEntry       entryP;
-  vm_offset_t   *address;
-  unsigned char *netAddr;
-  int           size;
-  vm_offset_t   io;
-  
-  if ((io = get_io_base_addr())
-      && (DTFindEntry("name", "mace", &entryP) == kSuccess)
-      && (DTGetProperty(entryP, "local-mac-address", (void **)&netAddr, &size) == kSuccess)
-      && (DTGetProperty(entryP, "reg", (void **)&address, &size) == kSuccess)
-      && (size == (2 * 3 * sizeof(vm_offset_t)) ))
-    {
-      extern boolean_t kdp_mace_init(void *baseAddresses[3],
-                                    unsigned char *netAddr);
-      void *maceAddrs[3];
-      
-      // address calculation not correct
-      maceAddrs[0] = (void *) io_map(io + address[0], address[1]);
-      maceAddrs[1] = (void *) io_map(io + address[2], 0x1000);
-      maceAddrs[2] = (void *) (((vm_offset_t)maceAddrs[1])
-                              + address[4] - address[2]);
-      result = kdp_mace_init( maceAddrs, netAddr );
-      
-    } else
-#endif
-      result = FALSE;
-  
-  return result;
+       vm_offset_t io, sccadd;
+       DTEntry     entryP;
+       vm_offset_t *sccregs;
+       unsigned int sccrsize;
+       
+       if(!(io = get_io_base_addr())) {                /* Get the I/O controller base address */
+               return (vm_offset_t)0;                          /* Hmmm, no I/O??? What gives??? How'd we even boot? */
+       }
+
+       
+/*     Note: if we find a escc-legacy, we need to kind of hack because it can be either an offset
+       into the iobase or the actual address itself.  ORint the two should provide the correct 
+       for either */
+
+       sccadd = 0;                                                             /* Assume none for now */
+
+       if(DTFindEntry("name", "escc-legacy", &entryP) == kSuccess)     {       /* Find the old fashioned serial port */
+               if (DTGetProperty(entryP, "reg", (void **)&sccregs, &sccrsize) == kSuccess) {   /* Do we have some registers? */
+                       sccadd = ((vm_offset_t)*sccregs | io);  /* Get the address */
+               }
+       }
+       
+       if(DTFindEntry("name", "escc", &entryP) == kSuccess) {  /* Well, see if we just have the new fangled one */
+               sccadd = io + 0x12000;                          /* Yeah, but still return the oldie goldie... */
+       }
+       
+       return sccadd;                                                  /* Return it if you found it */
 }
 
-vm_offset_t PE_find_scc(void)
+unsigned int PE_init_taproot(vm_offset_t *taddr)
 {
-  vm_offset_t io;
-  DTEntry     entryP;
-  
-  if ((io = get_io_base_addr())
-      && (DTFindEntry("name", "escc", &entryP) == kSuccess))
-    io += 0x12000; /* Offset to legacy SCC Registers */
-  else
-    io = 0;
-  
-  return io;
+       DTEntry     entryP;
+       vm_offset_t *tappdata;
+       unsigned int tappsize;
+       
+       
+       if(DTFindEntry("name", "memory-map", &entryP) != kSuccess) return 0;    /* no memory map */
+
+       if (DTGetProperty(entryP, "TapRoot", (void **)&tappdata, &tappsize) != kSuccess) return 0;      /* No TapRoot */
+
+       tappdata[1] = (tappdata[1] + 4095 ) & -4096;    /* Make sure this is a whole page */
+
+       *taddr = io_map_spec(tappdata[0], tappdata[1], VM_WIMG_IO);     /* Map it in and return the address */
+       tappdata[0] = *taddr;                                   /* Also change property */
+       return tappdata[1];                                             /* And the size */
 }