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kernel/linux-rt-4.4.41/arch/arm/mach-zynq/common.h 1.51 KB
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  /*
   * This file contains common function prototypes to avoid externs
   * in the c files.
   *
   *  Copyright (C) 2011 Xilinx
   *
   * This software is licensed under the terms of the GNU General Public
   * License version 2, as published by the Free Software Foundation, and
   * may be copied, distributed, and modified under those terms.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   */
  
  #ifndef __MACH_ZYNQ_COMMON_H__
  #define __MACH_ZYNQ_COMMON_H__
  
  extern int zynq_slcr_init(void);
  extern int zynq_early_slcr_init(void);
  extern void zynq_slcr_cpu_stop(int cpu);
  extern void zynq_slcr_cpu_start(int cpu);
  extern bool zynq_slcr_cpu_state_read(int cpu);
  extern void zynq_slcr_cpu_state_write(int cpu, bool die);
  extern u32 zynq_slcr_get_device_id(void);
  
  #ifdef CONFIG_SMP
  extern char zynq_secondary_trampoline;
  extern char zynq_secondary_trampoline_jump;
  extern char zynq_secondary_trampoline_end;
  extern int zynq_cpun_start(u32 address, int cpu);
  extern struct smp_operations zynq_smp_ops __initdata;
  #endif
  
  extern void __iomem *zynq_scu_base;
  
  void zynq_pm_late_init(void);
  
  static inline void zynq_core_pm_init(void)
  {
  	/* A9 clock gating */
  	asm volatile ("mrc  p15, 0, r12, c15, c0, 0
  "
  		      "orr  r12, r12, #1
  "
  		      "mcr  p15, 0, r12, c15, c0, 0
  "
  		      : /* no outputs */
  		      : /* no inputs */
  		      : "r12");
  }
  
  #endif