src/device/cpu_device.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/device.h>
   4 #include <console/console.h>
   5
   6 struct device *add_cpu_device(struct bus *cpu_bus, unsigned int apic_id,
   7                               int enabled)
   8 {
   9         struct device_path cpu_path;
  10         struct device *cpu;
  11
  12         /* Build the CPU device path */
  13         cpu_path.type = DEVICE_PATH_APIC;
  14         cpu_path.apic.apic_id = apic_id;
  15
  16         /* Update CPU in devicetree. */
  17         if (enabled)
  18                 cpu = alloc_find_dev(cpu_bus, &cpu_path);
  19         else
  20                 cpu = find_dev_path(cpu_bus, &cpu_path);
  21         if (!cpu)
  22                 return NULL;
  23
  24         cpu->enabled = enabled;
  25         printk(BIOS_DEBUG, "CPU: %s %s\n",
  26                 dev_path(cpu), cpu->enabled?"enabled":"disabled");
  27
  28         return cpu;
  29 }
  30
  31 void set_cpu_topology(struct device *cpu, unsigned int node,
  32                       unsigned int package, unsigned int core,
  33                       unsigned int thread)
  34 {
  35         cpu->path.apic.node_id = node;
  36         cpu->path.apic.package_id = package;
  37         cpu->path.apic.core_id = core;
  38         cpu->path.apic.thread_id = thread;
  39 }