bsp/rtl22xx: Move libcpu files to BSP

Update #3254.

1 files changed, 70 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/arm/rtl22xx/irq/irq.c b/c/src/lib/libbsp/arm/rtl22xx/irq/irq.c
new file mode 100644
index 0000000000..83e140bd7b
--- /dev/null
+++ b/c/src/lib/libbsp/arm/rtl22xx/irq/irq.c
@@ -0,0 +1,70 @@
+/*
+ * Philps LPC22XX Interrupt handler
+ *
+ * Copyright (c) 2010 embedded brains GmbH.
+ *
+ * Copyright (c)  2006 by Ray<rayx.cn@gmail.com>  to support LPC ARM
+ *  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 <lpc22xx.h>
+
+void bsp_interrupt_dispatch(void)
+{
+  rtems_vector_number vector = 31 - __builtin_clz(VICIRQStatus);
+
+  bsp_interrupt_handler_dispatch(vector);
+
+  VICVectAddr = 0;
+}
+
+void bsp_interrupt_vector_enable(rtems_vector_number vector)
+{
+  bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
+  VICIntEnable |= 1 << vector;
+}
+
+void bsp_interrupt_vector_disable(rtems_vector_number vector)
+{
+  bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
+  VICIntEnClr = 1 << vector;
+}
+
+rtems_status_code bsp_interrupt_facility_initialize(void)
+{
+  volatile uint32_t *ctrl = (volatile uint32_t *) VICVectCntlBase;
+  size_t i = 0;
+
+  /* Disable all interrupts */
+  VICIntEnClr = 0xffffffff;
+
+  /* Use IRQ category */
+  VICIntSelect = 0;
+
+  /* Enable access in USER mode */
+  VICProtection = 0;
+
+  for (i = 0; i < 16; ++i) {
+    /* Disable vector mode */
+    ctrl [i] = 0;
+
+    /* Acknowledge interrupts for all priorities */
+    VICVectAddr = 0;
+  }
+
+  /* Acknowledge interrupts for all priorities */
+  VICVectAddr = 0;
+
+  /* Install the IRQ exception handler */
+  _CPU_ISR_install_vector(ARM_EXCEPTION_IRQ, _ARMV4_Exception_interrupt, NULL);
+
+  return RTEMS_SUCCESSFUL;
+}