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 #include <stddef.h>
   6
   7 struct device *add_cpu_device(struct bus *cpu_bus, unsigned int apic_id,
   8                               int enabled)
   9 {
  10         struct device_path cpu_path = {};
  11         struct device *cpu;
  12
  13         /* Build the CPU device path */
  14         cpu_path.type = DEVICE_PATH_APIC;
  15         cpu_path.apic.apic_id = apic_id;
  16
  17         /* Update CPU in devicetree. */
  18         if (enabled)
  19                 cpu = alloc_find_dev(cpu_bus, &cpu_path);
  20         else
  21                 cpu = find_dev_path(cpu_bus, &cpu_path);
  22         if (!cpu)
  23                 return NULL;
  24
  25         cpu->enabled = enabled;
  26         printk(BIOS_DEBUG, "CPU: %s %s\n",
  27                 dev_path(cpu), cpu->enabled?"enabled":"disabled");
  28
  29         return cpu;
  30 }
  31
  32 void set_cpu_topology(struct device *cpu, unsigned int node,
  33                       unsigned int package, unsigned int core,
  34                       unsigned int thread)
  35 {
  36         cpu->path.apic.node_id = node;
  37         cpu->path.apic.package_id = package;
  38         cpu->path.apic.core_id = core;
  39         cpu->path.apic.thread_id = thread;
  40 }