xnu-344.21.73.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 092d1926f3c7fdcea768e4a7eb727189898807c1..558d6bd6550b2aa22e8789f755569e7ab783a874 100644 (file)
--- a/pexpert/ppc/pe_identify_machine.c
+++ b/pexpert/ppc/pe_identify_machine.c
@@ -3,19 +3,22 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
  *
  * @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,
  * 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@
  */
  * 
  * @APPLE_LICENSE_HEADER_END@
  */


@@ -43,32 +46,61 @@ void pe_identify_machine(void)
   bzero((void *)&gPEClockFrequencyInfo, sizeof(clock_frequency_info_t));
   
   // Start with default values.
   bzero((void *)&gPEClockFrequencyInfo, sizeof(clock_frequency_info_t));
   
   // Start with default values.

-  gPEClockFrequencyInfo.bus_clock_rate_hz = 100000000;
-  gPEClockFrequencyInfo.cpu_clock_rate_hz = 300000000;
-  gPEClockFrequencyInfo.dec_clock_rate_hz =  25000000;
-  
+  gPEClockFrequencyInfo.timebase_frequency_hz = 25000000;
+  gPEClockFrequencyInfo.bus_clock_rate_hz     = 100000000;
+  gPEClockFrequencyInfo.cpu_clock_rate_hz     = 300000000;
+

   // Try to get the values from the device tree.
   if (DTFindEntry("device_type", "cpu", &cpu) == kSuccess) {
   // Try to get the values from the device tree.
   if (DTFindEntry("device_type", "cpu", &cpu) == kSuccess) {

-    if (DTGetProperty(cpu, "bus-frequency",
-                     (void **)&value, &size) == kSuccess)
-      gPEClockFrequencyInfo.bus_clock_rate_hz = *value;
-    else {
-      if (DTLookupEntry(0, "/", &root) == kSuccess)
-       if (DTGetProperty(root, "clock-frequency",
-                         (void **)&value, &size) == kSuccess)
-         gPEClockFrequencyInfo.bus_clock_rate_hz = *value;
+    // Find the time base frequency first.
+    if (DTGetProperty(cpu, "timebase-frequency", (void **)&value, &size) == kSuccess) {
+      // timebase_frequency_hz is only 32 bits, and the device tree should never provide 64 bits
+      // so this if should never be taken.
+      if (size == 8) gPEClockFrequencyInfo.timebase_frequency_hz = *(unsigned long long *)value;
+      else gPEClockFrequencyInfo.timebase_frequency_hz = *value;
+    }
+    gPEClockFrequencyInfo.dec_clock_rate_hz = gPEClockFrequencyInfo.timebase_frequency_hz;
+    
+    // Find the bus frequency next.  Try the cpu node, then the root.
+    if (DTGetProperty(cpu, "bus-frequency", (void **)&value, &size) == kSuccess) {
+      if (size == 8) gPEClockFrequencyInfo.bus_frequency_hz = *(unsigned long long *)value;
+      else gPEClockFrequencyInfo.bus_frequency_hz = *value;
+    } else {
+      if (DTLookupEntry(0, "/", &root) == kSuccess) {
+       if (DTGetProperty(root, "clock-frequency", (void **)&value, &size) == kSuccess) {
+         if (size == 8) gPEClockFrequencyInfo.bus_frequency_hz = *(unsigned long long *)value;
+         else gPEClockFrequencyInfo.bus_frequency_hz = *value;
+       }
+      }
+    }
+    
+    gPEClockFrequencyInfo.bus_frequency_min_hz = gPEClockFrequencyInfo.bus_frequency_hz;
+    gPEClockFrequencyInfo.bus_frequency_max_hz = gPEClockFrequencyInfo.bus_frequency_hz;
+    
+    if (gPEClockFrequencyInfo.bus_frequency_hz < 0x100000000ULL)
+      gPEClockFrequencyInfo.bus_clock_rate_hz = gPEClockFrequencyInfo.bus_frequency_hz;
+    else
+      gPEClockFrequencyInfo.bus_clock_rate_hz = 0xFFFFFFFF;
+    
+    // Find the cpu frequency last.
+    if (DTGetProperty(cpu, "clock-frequency", (void **)&value, &size) == kSuccess) {
+      if (size == 8) gPEClockFrequencyInfo.cpu_frequency_hz = *(unsigned long long *)value;
+      else gPEClockFrequencyInfo.cpu_frequency_hz = *value;

     }
     
     }
     

-    if (DTGetProperty(cpu, "clock-frequency",
-                     (void **)&value, &size) == kSuccess)
-      gPEClockFrequencyInfo.cpu_clock_rate_hz = *value;
+    gPEClockFrequencyInfo.cpu_frequency_min_hz = gPEClockFrequencyInfo.cpu_frequency_hz;
+    gPEClockFrequencyInfo.cpu_frequency_max_hz = gPEClockFrequencyInfo.cpu_frequency_hz;

     
     

-    if (DTGetProperty(cpu, "timebase-frequency",
-                     (void **)&value, &size) == kSuccess)
-      gPEClockFrequencyInfo.dec_clock_rate_hz = *value;
+    if (gPEClockFrequencyInfo.cpu_frequency_hz < 0x100000000ULL)
+      gPEClockFrequencyInfo.cpu_clock_rate_hz = gPEClockFrequencyInfo.cpu_frequency_hz;
+    else
+      gPEClockFrequencyInfo.cpu_clock_rate_hz = 0xFFFFFFFF;

   }
   
   // Set the num / den pairs form the hz values.
   }
   
   // Set the num / den pairs form the hz values.

+  gPEClockFrequencyInfo.timebase_frequency_num = gPEClockFrequencyInfo.timebase_frequency_hz;
+  gPEClockFrequencyInfo.timebase_frequency_den = 1;
+  

   gPEClockFrequencyInfo.bus_clock_rate_num = gPEClockFrequencyInfo.bus_clock_rate_hz;
   gPEClockFrequencyInfo.bus_clock_rate_den = 1;
   
   gPEClockFrequencyInfo.bus_clock_rate_num = gPEClockFrequencyInfo.bus_clock_rate_hz;
   gPEClockFrequencyInfo.bus_clock_rate_den = 1;
   


@@ -106,50 +138,51 @@ vm_offset_t get_io_base_addr(void)
   return 0;
 }
 
   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]);         /* Map it in and return the address */
+       tappdata[0] = *taddr;                                   /* Also change property */
+       return tappdata[1];                                             /* And the size */

 }
 }