src/system/kernel/arch/m68k/arch_system_info.cpp

   1 /*
   2  * Copyright 2007, Haiku Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              François Revol <revol@free.fr>
   7  *
   8  * Copyright 2006, Ingo Weinhold <bonefish@cs.tu-berlin.de>.
   9  * All rights reserved. Distributed under the terms of the MIT License.
  10  */
  11
  12 #include <OS.h>
  13
  14 #include <arch_cpu.h>
  15 #include <arch_platform.h>
  16 #include <arch/system_info.h>
  17 #include <boot/kernel_args.h>
  18
  19
  20 static uint64 sCPUClockFrequency;
  21 static uint64 sBusClockFrequency;
  22 static uint16 sCPURevision;
  23
  24
  25 void
  26 arch_fill_topology_node(cpu_topology_node_info* node, int32 cpu)
  27 {
  28         switch (node->type) {
  29                 case B_TOPOLOGY_ROOT:
  30                         node->data.root.platform = B_CPU_M68K;
  31                         break;
  32
  33                 case B_TOPOLOGY_PACKAGE:
  34                         node->data.package.vendor = B_CPU_VENDOR_MOTOROLA;
  35                         node->data.package.cache_line_size = CACHE_LINE_SIZE;
  36                         break;
  37
  38                 case B_TOPOLOGY_CORE:
  39                         node->data.core.model = sCPURevision;
  40                         node->data.core.default_frequency = sCPUClockFrequency;
  41                         break;
  42
  43                 default:
  44                         break;
  45         }
  46 }
  47
  48
  49 status_t
  50 arch_system_info_init(struct kernel_args *args)
  51 {
  52         sCPUClockFrequency = args->arch_args.cpu_frequency;
  53         sBusClockFrequency = args->arch_args.bus_frequency; // not reported anymore?
  54
  55         sCPURevision = args->arch_args.cpu_type; //TODO:is it what we want?
  56 #warning M68K: use 060 PCR[15:8]
  57
  58         return B_OK;
  59 }