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armv8: Add read_mpidr() function

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This patch adds the read_mpidr() function which returns the
MPIDR_EL1 register value

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Sergey Temerkhanov 2015-10-14 09:55:44 -07:00 committed by Tom Rini
parent 19de81502b
commit ba5648cd91
1 changed files with 11 additions and 0 deletions
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11
arch/arm/include/asm/system.h
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@ -72,6 +72,17 @@ static inline void set_sctlr(unsigned int val)
asm volatile("isb");
}
static inline unsigned long read_mpidr(void)
{
unsigned long val;
asm volatile("mrs %0, mpidr_el1" : "=r" (val));
return val;
}
#define BSP_COREID 0
void __asm_flush_dcache_all(void);
void __asm_invalidate_dcache_all(void);
void __asm_flush_dcache_range(u64 start, u64 end);