[U-Boot] [RESUBMIT PATCH v3 1/8] armv8: Add read_mpidr() function

Sergey Temerkhanov
2015-08-13T16:51:21Z

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

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
---

Changes in v3: None
Changes in v2: None

arch/arm/include/asm/system.h | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 868ea54..323c43e 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -71,6 +71,17 @@ 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);
--
2.2.0