From f5426f4a860aa7b16827aea1dd611fbd49d1f90c Mon Sep 17 00:00:00 2001
From: shaojinchun <shaojinchun@rt-thread.com>
Date: Thu, 13 Dec 2018 09:49:15 +0800
Subject: [PATCH] =?UTF-8?q?1=20=E5=A2=9E=E5=8A=A0=E4=BA=86bsp=E6=95=B0?=
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---
 bsp/qemu-vexpress-a9/drivers/board.c         | 6 ++++++
 bsp/qemu-vexpress-a9/drivers/secondary_cpu.c | 4 ----
 include/rthw.h                               | 2 ++
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/bsp/qemu-vexpress-a9/drivers/board.c b/bsp/qemu-vexpress-a9/drivers/board.c
index 26aad5bda1..7daa881c35 100644
--- a/bsp/qemu-vexpress-a9/drivers/board.c
+++ b/bsp/qemu-vexpress-a9/drivers/board.c
@@ -82,4 +82,10 @@ void rt_hw_spin_unlock(rt_hw_spinlock_t *lock)
     lock->tickets.owner++;
     __asm__ volatile ("dsb ishst\nsev":::"memory");
 }
+
+void rt_hw_mb(void)
+{
+    __asm__ volatile ("dmb":::"memory");
+}
+
 #endif /*RT_USING_SMP*/
diff --git a/bsp/qemu-vexpress-a9/drivers/secondary_cpu.c b/bsp/qemu-vexpress-a9/drivers/secondary_cpu.c
index b8b5436929..29bb9ec895 100644
--- a/bsp/qemu-vexpress-a9/drivers/secondary_cpu.c
+++ b/bsp/qemu-vexpress-a9/drivers/secondary_cpu.c
@@ -46,10 +46,6 @@ void secondary_cpu_c_start(void)
     rt_hw_interrupt_install(IRQ_PBA8_TIMER0_1, rt_hw_timer2_isr, RT_NULL, "tick");
     rt_hw_interrupt_umask(IRQ_PBA8_TIMER0_1);
 
-    /* install IPI interrupt */
-    rt_hw_interrupt_install(RT_SCHEDULE_IPI_IRQ, rt_scheduler_ipi_handler, RT_NULL, "ipi");
-    rt_hw_interrupt_umask(RT_SCHEDULE_IPI_IRQ);
-
     rt_system_scheduler_start();
 }
 
diff --git a/include/rthw.h b/include/rthw.h
index dee10b0bee..8c731e6c53 100644
--- a/include/rthw.h
+++ b/include/rthw.h
@@ -146,6 +146,8 @@ typedef union {
 void rt_hw_spin_lock(rt_hw_spinlock_t *lock);
 void rt_hw_spin_unlock(rt_hw_spinlock_t *lock);
 
+void rt_hw_mb(void);
+
 int rt_hw_cpu_id(void);
 
 extern rt_hw_spinlock_t _cpus_lock;
-- 
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