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-rw-r--r--bsps/arm/gumstix/irq/irq.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/bsps/arm/gumstix/irq/irq.c b/bsps/arm/gumstix/irq/irq.c
new file mode 100644
index 0000000000..425795b165
--- /dev/null
+++ b/bsps/arm/gumstix/irq/irq.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2010 embedded brains GmbH.
+ *
+ * PXA255 Interrupt handler by Yang Xi <hiyangxi@gmail.com>
+ * Copyright (c) 2004 by Jay Monkman <jtm@lopingdog.com>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#include <rtems/score/armv4.h>
+
+#include <bsp.h>
+#include <bsp/irq.h>
+#include <bsp/irq-generic.h>
+
+#include <pxa255.h>
+
+void bsp_interrupt_dispatch(void)
+{
+ rtems_vector_number vector = 31 - __builtin_clz(XSCALE_INT_ICIP);
+
+ bsp_interrupt_handler_dispatch(vector);
+}
+
+void bsp_interrupt_vector_enable(rtems_vector_number vector)
+{
+ bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
+ XSCALE_INT_ICMR |= 1 << vector;
+}
+
+void bsp_interrupt_vector_disable(rtems_vector_number vector)
+{
+ bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
+ XSCALE_INT_ICMR &= ~(1 << vector);
+}
+
+rtems_status_code bsp_interrupt_facility_initialize(void)
+{
+ /* disable all interrupts */
+ XSCALE_INT_ICMR = 0x0;
+
+ /* Direct the interrupt to IRQ*/
+ XSCALE_INT_ICLR = 0x0;
+
+ /* Install the IRQ exception handler */
+ _CPU_ISR_install_vector(ARM_EXCEPTION_IRQ, _ARMV4_Exception_interrupt, NULL);
+
+ return RTEMS_SUCCESSFUL;
+}