platsmp.c 1.4 KB

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  1. /*
  2. * Dummy Virtual Machine - does what it says on the tin.
  3. *
  4. * Copyright (C) 2012 ARM Ltd
  5. * Author: Will Deacon <will.deacon@arm.com>
  6. *
  7. * This program is free software; you can redistribute it and/or modify
  8. * it under the terms of the GNU General Public License version 2 as
  9. * published by the Free Software Foundation.
  10. *
  11. * This program is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. * GNU General Public License for more details.
  15. *
  16. * You should have received a copy of the GNU General Public License
  17. * along with this program. If not, see <http://www.gnu.org/licenses/>.
  18. */
  19. #include <linux/init.h>
  20. #include <linux/smp.h>
  21. #include <linux/of.h>
  22. #include <asm/psci.h>
  23. #include <asm/smp_plat.h>
  24. extern void secondary_startup(void);
  25. static void __init virt_smp_init_cpus(void)
  26. {
  27. }
  28. static void __init virt_smp_prepare_cpus(unsigned int max_cpus)
  29. {
  30. }
  31. static int __cpuinit virt_boot_secondary(unsigned int cpu,
  32. struct task_struct *idle)
  33. {
  34. if (psci_ops.cpu_on)
  35. return psci_ops.cpu_on(cpu_logical_map(cpu),
  36. __pa(secondary_startup));
  37. return -ENODEV;
  38. }
  39. struct smp_operations __initdata virt_smp_ops = {
  40. .smp_init_cpus = virt_smp_init_cpus,
  41. .smp_prepare_cpus = virt_smp_prepare_cpus,
  42. .smp_boot_secondary = virt_boot_secondary,
  43. };