arch/arm/mach-zynq/common.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * This file contains common function prototypes to avoid externs
   4  * in the c files.
   5  *
   6  *  Copyright (C) 2011 Xilinx
   7  */
   8
   9 #ifndef __MACH_ZYNQ_COMMON_H__
  10 #define __MACH_ZYNQ_COMMON_H__
  11
  12 extern int zynq_slcr_init(void);
  13 extern int zynq_early_slcr_init(void);
  14 extern void zynq_slcr_cpu_stop(int cpu);
  15 extern void zynq_slcr_cpu_start(int cpu);
  16 extern bool zynq_slcr_cpu_state_read(int cpu);
  17 extern void zynq_slcr_cpu_state_write(int cpu, bool die);
  18 extern u32 zynq_slcr_get_device_id(void);
  19
  20 #ifdef CONFIG_SMP
  21 extern char zynq_secondary_trampoline;
  22 extern char zynq_secondary_trampoline_jump;
  23 extern char zynq_secondary_trampoline_end;
  24 extern int zynq_cpun_start(u32 address, int cpu);
  25 extern const struct smp_operations zynq_smp_ops;
  26 #endif
  27
  28 extern void __iomem *zynq_scu_base;
  29
  30 void zynq_pm_late_init(void);
  31
  32 static inline void zynq_core_pm_init(void)
  33 {
  34         /* A9 clock gating */
  35         asm volatile ("mrc  p15, 0, r12, c15, c0, 0\n"
  36                       "orr  r12, r12, #1\n"
  37                       "mcr  p15, 0, r12, c15, c0, 0\n"
  38                       : /* no outputs */
  39                       : /* no inputs */
  40                       : "r12");
  41 }
  42
  43 #endif