src/arch/ppc/lib/cpu.c

   1 #include <console/console.h>
   2 #include <arch/io.h>
   3 #include <string.h>
   4 #include <device/device.h>
   5 #include <cpu/cpu.h>
   6 #include <cpu/ppc/cpuid.h>
   7 #include "ppc.h"
   8 #include "ppcreg.h"
   9
  10 #if 0
  11 static void set_cpu_ops(struct device *cpu)
  12 {
  13         struct cpu_driver *driver;
  14         cpu->ops = 0;
  15         for (driver = cpu_drivers; driver < ecpu_drivers; driver++) {
  16                 struct cpu_device_id *id;
  17                 for(id = driver->id_table; id->pvr != 0; id++) {
  18                         if (cpu->device == id->pvr)
  19                         {
  20                                 goto found;
  21                         }
  22                 }
  23         }
  24         die("Unknown cpu");
  25         return;
  26  found:
  27         cpu->ops = driver->ops;
  28 }
  29 #endif
  30
  31 void cpu_initialize(void)
  32 {
  33         /* Because we busy wait at the printk spinlock.
  34          * It is important to keep the number of printed messages
  35          * from secondary cpus to a minimum, when debugging is
  36          * disabled.
  37          */
  38         struct device *cpu;
  39         struct cpu_info *info;
  40         info = cpu_info();
  41
  42         printk_notice("Initializing CPU #%d\n", info->index);
  43
  44         cpu = info->cpu;
  45         if (!cpu) {
  46                 die("CPU: missing cpu device structure");
  47         }
  48
  49         /* Find what type of cpu we are dealing with */
  50         cpu->vendor = 0; /* PPC cpus do not have a vendor field */
  51         cpu->device = ppc_getpvr();
  52         display_cpuid(cpu);
  53
  54 #if 0
  55         /* Lookup the cpu's operations */
  56         set_cpu_ops(cpu);
  57
  58         /* Initialize the cpu */
  59         if (cpu->ops && cpu->ops->init) {
  60                 cpu->enabled = 1;
  61                 cpu->initialized = 1;
  62                 cpu->ops->init();
  63         }
  64 #endif
  65         /* Turn on caching if we haven't already */
  66
  67         printk_info("CPU #%d Initialized\n", info->index);
  68         return;
  69 }