This helps to find out on which CPU we are currently running on.
Signed-off-by: Ralf Ramsauer <[email protected]>
---
inmates/lib/arm-common/include/inmate.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/inmates/lib/arm-common/include/inmate.h
b/inmates/lib/arm-common/include/inmate.h
index 3d35f35a..8e3f1e4b 100644
--- a/inmates/lib/arm-common/include/inmate.h
+++ b/inmates/lib/arm-common/include/inmate.h
@@ -39,6 +39,8 @@
#ifndef _JAILHOUSE_INMATE_H
#define _JAILHOUSE_INMATE_H
+#include <asm/sysregs.h>
+
typedef signed char s8;
typedef unsigned char u8;
@@ -81,6 +83,14 @@ static inline void cpu_relax(void)
asm volatile("" : : : "memory");
}
+static inline unsigned long cpu_id(void)
+{
+ unsigned long mpidr;
+
+ arm_read_sysreg(MPIDR_EL1, mpidr);
+ return mpidr & MPIDR_CPUID_MASK;
+}
+
typedef void (*irq_handler_t)(unsigned int);
void gic_setup(irq_handler_t handler);
void gic_enable_irq(unsigned int irq);
--
2.14.1
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