[bsp]增加超睿DP1000 bsp支持v5.2.1

1 files changed, 92 insertions, 0 deletions

diff --git a/bsp/ultrarisc/arch/ur-cp100/interrupt.c b/bsp/ultrarisc/arch/ur-cp100/interrupt.c
new file mode 100644
index 0000000000..67947cd627
--- /dev/null
+++ b/bsp/ultrarisc/arch/ur-cp100/interrupt.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2006-2025 RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018/10/01     Bernard      The first version
+ * 2018/12/27     Jesven       Change irq enable/disable to cpu0
+ */
+#include <plic.h>
+#include "encoding.h"
+#include "riscv.h"
+#include "interrupt.h"
+
+struct rt_irq_desc irq_desc[MAX_HANDLERS];
+
+static rt_isr_handler_t rt_hw_interrupt_handle(rt_uint32_t vector, void *param)
+{
+    rt_kprintf("UN-handled interrupt %d occurred!!!\n", vector);
+    return RT_NULL;
+}
+
+int rt_hw_plic_irq_enable(int irq_number)
+{
+    plic_irq_enable(irq_number);
+    return 0;
+}
+
+int rt_hw_plic_irq_disable(int irq_number)
+{
+    plic_irq_disable(irq_number);
+    return 0;
+}
+
+/**
+ * This function will un-mask a interrupt.
+ * @param vector the interrupt number
+ */
+void rt_hw_interrupt_umask(int vector)
+{
+    plic_set_priority(vector, 1);
+
+    rt_hw_plic_irq_enable(vector);
+}
+
+/**
+ * This function will install a interrupt service routine to a interrupt.
+ * @param vector the interrupt number
+ * @param new_handler the interrupt service routine to be installed
+ * @param old_handler the old interrupt service routine
+ */
+rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
+        void *param, const char *name)
+{
+    rt_isr_handler_t old_handler = RT_NULL;
+
+    if (vector < MAX_HANDLERS)
+    {
+        old_handler = irq_desc[vector].handler;
+        if (handler != RT_NULL)
+        {
+            irq_desc[vector].handler = (rt_isr_handler_t)handler;
+            irq_desc[vector].param = param;
+#ifdef RT_USING_INTERRUPT_INFO
+            rt_snprintf(irq_desc[vector].name, RT_NAME_MAX - 1, "%s", name);
+            irq_desc[vector].counter = 0;
+#endif
+        }
+    }
+
+    return old_handler;
+}
+
+void rt_hw_interrupt_init()
+{
+    /* Enable machine external interrupts. */
+    /* set_csr(sie, SIP_SEIP); */
+    int idx = 0;
+    /* init exceptions table */
+    for (idx = 0; idx < MAX_HANDLERS; idx++)
+    {
+        irq_desc[idx].handler = (rt_isr_handler_t)rt_hw_interrupt_handle;
+        irq_desc[idx].param = RT_NULL;
+#ifdef RT_USING_INTERRUPT_INFO
+        rt_snprintf(irq_desc[idx].name, RT_NAME_MAX - 1, "default");
+        irq_desc[idx].counter = 0;
+#endif
+    }
+    /*init plic*/
+    plic_init();
+}
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