1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASMARM_ARCH_SCU_H
3 #define __ASMARM_ARCH_SCU_H
5 #define SCU_PM_NORMAL 0
6 #define SCU_PM_DORMANT 2
7 #define SCU_PM_POWEROFF 3
11 #include <linux/errno.h>
12 #include <asm/cputype.h>
14 static inline bool scu_a9_has_base(void)
16 return read_cpuid_part() == ARM_CPU_PART_CORTEX_A9;
19 static inline unsigned long scu_a9_get_base(void)
23 asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (pa));
28 #ifdef CONFIG_HAVE_ARM_SCU
29 unsigned int scu_get_core_count(void __iomem *);
30 int scu_power_mode(void __iomem *, unsigned int);
32 static inline unsigned int scu_get_core_count(void __iomem *scu_base)
36 static inline int scu_power_mode(void __iomem *scu_base, unsigned int mode)
42 #if defined(CONFIG_SMP) && defined(CONFIG_HAVE_ARM_SCU)
43 void scu_enable(void __iomem *scu_base);
45 static inline void scu_enable(void __iomem *scu_base) {}