arch/x86/cpu/qemu/cpu.c

   1 /*
   2  * Copyright (C) 2015, Miao Yan <yanmiaobest@gmail.com>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <cpu.h>
   9 #include <dm.h>
  10 #include <errno.h>
  11 #include <qfw.h>
  12 #include <asm/cpu.h>
  13
  14 int cpu_qemu_get_desc(struct udevice *dev, char *buf, int size)
  15 {
  16         if (size < CPU_MAX_NAME_LEN)
  17                 return -ENOSPC;
  18
  19         cpu_get_name(buf);
  20
  21         return 0;
  22 }
  23
  24 static int cpu_qemu_get_count(struct udevice *dev)
  25 {
  26         return qemu_fwcfg_online_cpus();
  27 }
  28
  29 static const struct cpu_ops cpu_qemu_ops = {
  30         .get_desc       = cpu_qemu_get_desc,
  31         .get_count      = cpu_qemu_get_count,
  32 };
  33
  34 static const struct udevice_id cpu_qemu_ids[] = {
  35         { .compatible = "cpu-qemu" },
  36         { }
  37 };
  38
  39 U_BOOT_DRIVER(cpu_qemu_drv) = {
  40         .name           = "cpu_qemu",
  41         .id             = UCLASS_CPU,
  42         .of_match       = cpu_qemu_ids,
  43         .ops            = &cpu_qemu_ops,
  44 };