Add support for QEMU virt ARMv8-A target

This patch adds support for the QEMU virt ARMv8-A target.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

1 files changed, 92 insertions, 0 deletions

diff --git a/plat/qemu/qemu_gic.c b/plat/qemu/qemu_gic.c
new file mode 100644
index 00000000..44ce19c8
--- /dev/null
+++ b/plat/qemu/qemu_gic.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <assert.h>
+#include <bl_common.h>
+#include <gicv2.h>
+#include <interrupt_mgmt.h>
+
+uint32_t plat_ic_get_pending_interrupt_id(void)
+{
+	return gicv2_get_pending_interrupt_id();
+}
+
+uint32_t plat_ic_get_pending_interrupt_type(void)
+{
+	return gicv2_get_pending_interrupt_type();
+}
+
+uint32_t plat_ic_acknowledge_interrupt(void)
+{
+	return gicv2_acknowledge_interrupt();
+}
+
+uint32_t plat_ic_get_interrupt_type(uint32_t id)
+{
+	uint32_t group;
+
+	group = gicv2_get_interrupt_group(id);
+
+	/* Assume that all secure interrupts are S-EL1 interrupts */
+	if (!group)
+		return INTR_TYPE_S_EL1;
+	else
+		return INTR_TYPE_NS;
+
+}
+
+void plat_ic_end_of_interrupt(uint32_t id)
+{
+	gicv2_end_of_interrupt(id);
+}
+
+uint32_t plat_interrupt_type_to_line(uint32_t type,
+				uint32_t security_state)
+{
+	assert(type == INTR_TYPE_S_EL1 ||
+	       type == INTR_TYPE_EL3 ||
+	       type == INTR_TYPE_NS);
+
+	assert(sec_state_is_valid(security_state));
+
+	/* Non-secure interrupts are signalled on the IRQ line always */
+	if (type == INTR_TYPE_NS)
+		return __builtin_ctz(SCR_IRQ_BIT);
+
+	/*
+	 * Secure interrupts are signalled using the IRQ line if the FIQ_EN
+	 * bit is not set else they are signalled using the FIQ line.
+	 */
+	if (gicv2_is_fiq_enabled())
+		return __builtin_ctz(SCR_FIQ_BIT);
+	else
+		return __builtin_ctz(SCR_IRQ_BIT);
+}
+