LXR uboot/arch/arm/cpu/armv7/psci-common.c

   1/*
   2 * Common PSCI functions
   3 *
   4 * Copyright (C) 2016 Chen-Yu Tsai
   5 * Author: Chen-Yu Tsai <wens@csie.org>
   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
  20#include <config.h>
  21#include <asm/armv7.h>
  22#include <asm/macro.h>
  23#include <asm/psci.h>
  24#include <asm/secure.h>
  25#include <linux/linkage.h>
  26
  27static u32 psci_target_pc[CONFIG_ARMV7_PSCI_NR_CPUS] __secure_data = { 0 };
  28static u32 psci_context_id[CONFIG_ARMV7_PSCI_NR_CPUS] __secure_data = { 0 };
  29
  30void __secure psci_save(int cpu, u32 pc, u32 context_id)
  31{
  32        psci_target_pc[cpu] = pc;
  33        psci_context_id[cpu] = context_id;
  34        dsb();
  35}
  36
  37u32 __secure psci_get_target_pc(int cpu)
  38{
  39        return psci_target_pc[cpu];
  40}
  41
  42u32 __secure psci_get_context_id(int cpu)
  43{
  44        return psci_context_id[cpu];
  45}
  46
  47