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kernel add
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#ifndef __ASMARM_ARCH_SCU_H
#define __ASMARM_ARCH_SCU_H
#define SCU_PM_NORMAL 0
#define SCU_PM_DORMANT 2
#define SCU_PM_POWEROFF 3
#ifndef __ASSEMBLER__
#include <asm/cputype.h>
#include <asm/errno.h>
static inline bool scu_a9_has_base(void)
{
return read_cpuid_part() == ARM_CPU_PART_CORTEX_A9;
}
static inline unsigned long scu_a9_get_base(void)
{
unsigned long pa;
asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (pa));
return pa;
}
#ifdef CONFIG_HAVE_ARM_SCU
unsigned int scu_get_core_count(void __iomem *);
int scu_power_mode(void __iomem *, unsigned int);
#else
static inline unsigned int scu_get_core_count(void __iomem *scu_base)
{
return 0;
}
static inline int scu_power_mode(void __iomem *scu_base, unsigned int mode)
{
return -EINVAL;
}
#endif
#if defined(CONFIG_SMP) && defined(CONFIG_HAVE_ARM_SCU)
void scu_enable(void __iomem *scu_base);
#else
static inline void scu_enable(void __iomem *scu_base) {}
#endif
#endif
#endif
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