Implement read_mpidr() on armv8 to make use of it in generic code that compiles on both armv8 and armv8.
Signed-off-by: Patrick Rudolph patrick.rudolph@9elements.com Reviewed-by: Simon Glass sjg@chromium.org --- arch/arm/include/asm/system.h | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h index 2237d7d006..9eb30c2ade 100644 --- a/arch/arm/include/asm/system.h +++ b/arch/arm/include/asm/system.h @@ -394,6 +394,15 @@ void switch_to_hypervisor_ret(void); #define wfi() #endif
+static inline unsigned long read_mpidr(void) +{ + unsigned long val; + + asm volatile("mrc p15, 0, %0, c0, c0, 5" : "=r" (val)); + + return val; +} + static inline unsigned long get_cpsr(void) { unsigned long cpsr;