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@@ -1,36 +1,76 @@
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-/*
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- * File : trap.c
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- * This file is part of RT-Thread RTOS
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- * COPYRIGHT (C) 2006, RT-Thread Development Team
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- *
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- * The license and distribution terms for this file may be
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- * found in the file LICENSE in this distribution or at
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- * http://openlab.rt-thread.com/license/LICENSE
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- *
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- * Change Logs:
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- * Date Author Notes
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- * 2006-08-23 Bernard first version
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- */
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-
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-#include <rtthread.h>
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+/*
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+ * File : cpuport.c
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+ * This file is part of RT-Thread RTOS
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+ * COPYRIGHT (C) 2009 - 2011, RT-Thread Development Team
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+ *
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+ * The license and distribution terms for this file may be
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+ * found in the file LICENSE in this distribution or at
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+ * http://www.rt-thread.org/license/LICENSE
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+ *
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+ * Change Logs:
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+ * Date Author Notes
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+ * 2011-06-15 aozima the first version for lpc214x
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+ */
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+
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+#include <rtthread.h>
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#include "lpc214x.h"
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+
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+#define MAX_HANDLERS 32
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+#define SVCMODE 0x13
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-#define MAX_HANDLERS 32
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-
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-extern rt_uint32_t rt_interrupt_nest;
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-
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-rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
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-rt_uint32_t rt_thread_switch_interrput_flag;
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+extern rt_uint32_t rt_interrupt_nest;
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/**
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* @addtogroup LPC214x
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*/
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-/*@{*/
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+/*@{*/
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+
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+/**
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+ * This function will initialize thread stack
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+ *
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+ * @param tentry the entry of thread
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+ * @param parameter the parameter of entry
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+ * @param stack_addr the beginning stack address
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+ * @param texit the function will be called when thread exit
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+ *
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+ * @return stack address
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+ */
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+rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
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+ rt_uint8_t *stack_addr, void *texit)
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+{
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+ unsigned long *stk;
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+
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+ stk = (unsigned long *)stack_addr;
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+ *(stk) = (unsigned long)tentry; /* entry point */
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+ *(--stk) = (unsigned long)texit; /* lr */
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+ *(--stk) = 0; /* r12 */
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+ *(--stk) = 0; /* r11 */
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+ *(--stk) = 0; /* r10 */
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+ *(--stk) = 0; /* r9 */
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+ *(--stk) = 0; /* r8 */
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+ *(--stk) = 0; /* r7 */
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+ *(--stk) = 0; /* r6 */
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+ *(--stk) = 0; /* r5 */
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+ *(--stk) = 0; /* r4 */
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+ *(--stk) = 0; /* r3 */
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+ *(--stk) = 0; /* r2 */
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+ *(--stk) = 0; /* r1 */
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+ *(--stk) = (unsigned long)parameter; /* r0 : argument */
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+ *(--stk) = SVCMODE; /* cpsr */
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+ *(--stk) = SVCMODE; /* spsr */
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+ /* return task's current stack address */
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+ return (rt_uint8_t *)stk;
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+}
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+
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+/* exception and interrupt handler table */
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+rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
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+rt_uint32_t rt_thread_switch_interrput_flag;
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+
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void rt_hw_interrupt_handler(int vector)
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{
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rt_kprintf("Unhandled interrupt %d occured!!!\n", vector);
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-}
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+}
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/**
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* This function will initialize hardware interrupt
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@@ -39,7 +79,7 @@ void rt_hw_interrupt_init()
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{
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rt_base_t index;
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rt_uint32_t *vect_addr, *vect_ctl;
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-
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+
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/* initialize VIC*/
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VICIntEnClr = 0xffffffff;
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VICVectAddr = 0;
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@@ -60,7 +100,7 @@ void rt_hw_interrupt_init()
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rt_interrupt_from_thread = 0;
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rt_interrupt_to_thread = 0;
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rt_thread_switch_interrput_flag = 0;
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-}
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+}
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/**
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* This function will mask a interrupt.
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@@ -69,8 +109,8 @@ void rt_hw_interrupt_init()
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void rt_hw_interrupt_mask(int vector)
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{
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VICIntEnClr = (1 << vector);
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-}
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-
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+}
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+
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/**
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* This function will un-mask a interrupt.
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* @param vector the interrupt number
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@@ -78,8 +118,8 @@ void rt_hw_interrupt_mask(int vector)
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void rt_hw_interrupt_umask(int vector)
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{
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VICIntEnable = (1 << vector);
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-}
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-
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+}
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+
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/**
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* This function will install a interrupt service routine to a interrupt.
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* @param vector the interrupt number
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@@ -100,6 +140,41 @@ void rt_hw_interrupt_install(int vector, rt_isr_handler_t new_handler, rt_isr_ha
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if (old_handler != RT_NULL) *old_handler = (rt_isr_handler_t) *vect_addr;
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if (new_handler != RT_NULL) *vect_addr = (rt_uint32_t) new_handler;
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}
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+}
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+
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+/**
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+ * this function will reset CPU
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+ *
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+ */
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+void rt_hw_cpu_reset()
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+{
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+}
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+
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+/**
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+ * this function will shutdown CPU
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+ *
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+ */
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+void rt_hw_cpu_shutdown()
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+{
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+ rt_kprintf("shutdown...\n");
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+
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+ while (1);
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+}
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+
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+void rt_hw_trap_irq()
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+{
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+ rt_isr_handler_t isr_func;
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+
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+ isr_func = (rt_isr_handler_t) VICVectAddr;
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+ isr_func(0);
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+
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+ /* acknowledge Interrupt */
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+ // VICVectAddr = 0;
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}
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+void rt_hw_trap_fiq()
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+{
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+ rt_kprintf("fast interrupt request\n");
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+}
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+
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/*@}*/
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wuyangyong