xref: /linux/arch/arm/mach-zynq/common.h (revision e0bf6c5ca2d3281f231c5f0c9bf145e9513644de)
1 /*
2  * This file contains common function prototypes to avoid externs
3  * in the c files.
4  *
5  *  Copyright (C) 2011 Xilinx
6  *
7  * This software is licensed under the terms of the GNU General Public
8  * License version 2, as published by the Free Software Foundation, and
9  * may be copied, distributed, and modified under those terms.
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 
17 #ifndef __MACH_ZYNQ_COMMON_H__
18 #define __MACH_ZYNQ_COMMON_H__
19 
20 void zynq_secondary_startup(void);
21 
22 extern int zynq_slcr_init(void);
23 extern int zynq_early_slcr_init(void);
24 extern void zynq_slcr_system_reset(void);
25 extern void zynq_slcr_cpu_stop(int cpu);
26 extern void zynq_slcr_cpu_start(int cpu);
27 extern bool zynq_slcr_cpu_state_read(int cpu);
28 extern void zynq_slcr_cpu_state_write(int cpu, bool die);
29 extern u32 zynq_slcr_get_device_id(void);
30 
31 #ifdef CONFIG_SMP
32 extern char zynq_secondary_trampoline;
33 extern char zynq_secondary_trampoline_jump;
34 extern char zynq_secondary_trampoline_end;
35 extern int zynq_cpun_start(u32 address, int cpu);
36 extern struct smp_operations zynq_smp_ops __initdata;
37 #endif
38 
39 extern void __iomem *zynq_scu_base;
40 
41 void zynq_pm_late_init(void);
42 
43 static inline void zynq_core_pm_init(void)
44 {
45 	/* A9 clock gating */
46 	asm volatile ("mrc  p15, 0, r12, c15, c0, 0\n"
47 		      "orr  r12, r12, #1\n"
48 		      "mcr  p15, 0, r12, c15, c0, 0\n"
49 		      : /* no outputs */
50 		      : /* no inputs */
51 		      : "r12");
52 }
53 
54 #endif
55