bsps/mpc55xx: Move libcpu content to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

1 files changed, 165 insertions, 0 deletions

diff --git a/bsps/powerpc/mpc55xxevb/start/irq.c b/bsps/powerpc/mpc55xxevb/start/irq.c
new file mode 100644
index 0000000000..53c30f171e
--- /dev/null
+++ b/bsps/powerpc/mpc55xxevb/start/irq.c
@@ -0,0 +1,165 @@
+/**
+ * @file
+ *
+ * @ingroup mpc55xx
+ *
+ * @brief Source file for MPC55XX interrupt support.
+ */
+
+/*
+ * Copyright (c) 2008-2012 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Obere Lagerstr. 30
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * 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 <mpc55xx/regs.h>
+
+#include <libcpu/powerpc-utility.h>
+
+#include <bsp/irq.h>
+#include <bsp/vectors.h>
+#include <bsp/irq-generic.h>
+
+#define RTEMS_STATUS_CHECKS_USE_PRINTK
+
+#include <rtems/status-checks.h>
+
+/**
+ * @brief Returns the priority @a priority of IRQ @a vector from the INTC.
+ */
+rtems_status_code mpc55xx_intc_get_priority( rtems_vector_number vector, unsigned *priority)
+{
+	if (MPC55XX_IRQ_IS_VALID( vector)) {
+		*priority = INTC.PSR [vector].B.PRI;
+		return RTEMS_SUCCESSFUL;
+	} else {
+		*priority = MPC55XX_INTC_INVALID_PRIORITY;
+		return RTEMS_INVALID_NUMBER;
+	}
+}
+
+/**
+ * @brief Sets the priority of IRQ @a vector to @a priority at the INTC.
+ */
+rtems_status_code mpc55xx_intc_set_priority( rtems_vector_number vector, unsigned priority)
+{
+	if (MPC55XX_IRQ_IS_VALID( vector) && MPC55XX_INTC_IS_VALID_PRIORITY( priority)) {
+		INTC.PSR [vector].B.PRI = priority;
+		if (INTC.PSR [vector].B.PRI == priority) {
+			return RTEMS_SUCCESSFUL;
+		} else {
+			return RTEMS_IO_ERROR;
+		}
+	} else {
+		return RTEMS_INVALID_NUMBER;
+	}
+}
+
+/**
+ * @brief Raises the software IRQ with number @a vector.
+ */
+rtems_status_code mpc55xx_intc_raise_software_irq( rtems_vector_number vector)
+{
+	if (MPC55XX_IRQ_IS_SOFTWARE( vector)) {
+		INTC.SSCIR [vector].B.SET = 1;
+		return RTEMS_SUCCESSFUL;
+	} else {
+		return RTEMS_INVALID_NUMBER;
+	}
+}
+
+/**
+ * @brief Clears the software IRQ with number @a vector.
+ */
+rtems_status_code mpc55xx_intc_clear_software_irq( rtems_vector_number vector)
+{
+	if (MPC55XX_IRQ_IS_SOFTWARE( vector)) {
+		INTC.SSCIR [vector].B.CLR = 1;
+		return RTEMS_SUCCESSFUL;
+	} else {
+		return RTEMS_INVALID_NUMBER;
+	}
+}
+
+/**
+ * @brief Installs interrupt handler and sets priority.
+ */
+rtems_status_code mpc55xx_interrupt_handler_install(
+	rtems_vector_number vector,
+	const char *info,
+	rtems_option options,
+	unsigned priority,
+	rtems_interrupt_handler handler,
+	void *arg
+)
+{
+	if (MPC55XX_IRQ_IS_VALID( vector) && MPC55XX_INTC_IS_VALID_PRIORITY( priority)) {
+		rtems_status_code sc = RTEMS_SUCCESSFUL;
+
+		sc = rtems_interrupt_handler_install( vector, info, options, handler, arg);
+		RTEMS_CHECK_SC( sc, "Install interrupt handler");
+
+		return mpc55xx_intc_set_priority( vector, priority);
+	} else {
+		return RTEMS_INVALID_NUMBER;
+	}
+}
+
+void bsp_interrupt_dispatch(uintptr_t exception_number)
+{
+	/* Acknowledge interrupt request */
+	rtems_vector_number vector = INTC.IACKR.B.INTVEC;
+
+	/* Save machine state and enable external exceptions */
+	uint32_t msr = ppc_external_exceptions_enable();
+
+	/* Dispatch interrupt handlers */
+	bsp_interrupt_handler_dispatch( vector);
+
+	/* Restore machine state */
+	ppc_external_exceptions_disable( msr);
+
+	/* End of interrupt */
+	INTC.EOIR.R = 1;
+}
+
+rtems_status_code bsp_interrupt_facility_initialize(void)
+{
+	rtems_vector_number vector;
+
+	/* Initialize interrupt controller */
+
+	/* Disable all interrupts */
+	for (vector = MPC55XX_IRQ_MIN; vector <= MPC55XX_IRQ_MAX; ++vector) {
+		INTC.PSR [vector].B.PRI = MPC55XX_INTC_DISABLED_PRIORITY;
+	}
+
+	/* Software vector mode */
+	INTC.MCR.B.VTES = 0;
+	INTC.MCR.B.HVEN = 0;
+
+	/* Set current priority to 0 */
+	INTC.CPR.B.PRI = 0;
+
+	return RTEMS_SUCCESSFUL;
+}
+
+void bsp_interrupt_vector_enable( rtems_vector_number vector)
+{
+	bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
+	mpc55xx_intc_set_priority( vector, MPC55XX_INTC_DEFAULT_PRIORITY);
+}
+
+void bsp_interrupt_vector_disable( rtems_vector_number vector)
+{
+	bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
+	mpc55xx_intc_set_priority( vector, MPC55XX_INTC_DISABLED_PRIORITY);
+}