1 files changed, 50 insertions, 0 deletions
diff --git a/include/hw/timer/armv7m_systick.h b/include/hw/timer/armv7m_systick.h
new file mode 100644
index 000000000..ee09b1388
--- /dev/null
+++ b/include/hw/timer/armv7m_systick.h
@@ -0,0 +1,50 @@
+/*
+ * ARMv7M SysTick timer
+ *
+ * Copyright (c) 2006-2007 CodeSourcery.
+ * Written by Paul Brook
+ * Copyright (c) 2017 Linaro Ltd
+ * Written by Peter Maydell
+ *
+ * This code is licensed under the GPL (version 2 or later).
+ */
+
+#ifndef HW_TIMER_ARMV7M_SYSTICK_H
+#define HW_TIMER_ARMV7M_SYSTICK_H
+
+#include "hw/sysbus.h"
+#include "qom/object.h"
+#include "hw/ptimer.h"
+#include "hw/clock.h"
+
+#define TYPE_SYSTICK "armv7m_systick"
+
+OBJECT_DECLARE_SIMPLE_TYPE(SysTickState, SYSTICK)
+
+/*
+ * QEMU interface:
+ *  + sysbus MMIO region 0 is the register interface (covering
+ *    the registers which are mapped at address 0xE000E010)
+ *  + sysbus IRQ 0 is the interrupt line to the NVIC
+ *  + Clock input "refclk" is the external reference clock
+ *    (used when SYST_CSR.CLKSOURCE == 0)
+ *  + Clock input "cpuclk" is the main CPU clock
+ *    (used when SYST_CSR.CLKSOURCE == 1)
+ */
+
+struct SysTickState {
+    /*< private >*/
+    SysBusDevice parent_obj;
+    /*< public >*/
+
+    uint32_t control;
+    uint32_t reload;
+    int64_t tick;
+    ptimer_state *ptimer;
+    MemoryRegion iomem;
+    qemu_irq irq;
+    Clock *refclk;
+    Clock *cpuclk;
+};
+
+#endif