git.sur5r.net Git - u-boot/blob - 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 <asm/cpu.h>
  12 #include <asm/fw_cfg.h>
  13
  14 DECLARE_GLOBAL_DATA_PTR;
  15
  16 int cpu_qemu_get_desc(struct udevice *dev, char *buf, int size)
  17 {
  18         if (size < CPU_MAX_NAME_LEN)
  19                 return -ENOSPC;
  20
  21         cpu_get_name(buf);
  22
  23         return 0;
  24 }
  25
  26 static int cpu_qemu_get_count(struct udevice *dev)
  27 {
  28         return qemu_fwcfg_online_cpus();
  29 }
  30
  31 static const struct cpu_ops cpu_qemu_ops = {
  32         .get_desc       = cpu_qemu_get_desc,
  33         .get_count      = cpu_qemu_get_count,
  34 };
  35
  36 static const struct udevice_id cpu_qemu_ids[] = {
  37         { .compatible = "cpu-qemu" },
  38         { }
  39 };
  40
  41 U_BOOT_DRIVER(cpu_qemu_drv) = {
  42         .name           = "cpu_qemu",
  43         .id             = UCLASS_CPU,
  44         .of_match       = cpu_qemu_ids,
  45         .ops            = &cpu_qemu_ops,
  46 };