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, 145 insertions, 0 deletions

diff --git a/plat/qemu/qemu_common.c b/plat/qemu/qemu_common.c
new file mode 100644
index 000000000..7ba1d34d0
--- /dev/null
+++ b/plat/qemu/qemu_common.c
@@ -0,0 +1,145 @@
+/*
+ * 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 <arch_helpers.h>
+#include <bl_common.h>
+#include <platform_def.h>
+#include "qemu_private.h"
+#include <xlat_tables.h>
+
+#define MAP_DEVICE0	MAP_REGION_FLAT(DEVICE0_BASE,			\
+					DEVICE0_SIZE,			\
+					MT_DEVICE | MT_RW | MT_SECURE)
+
+#ifdef DEVICE1_BASE
+#define MAP_DEVICE1	MAP_REGION_FLAT(DEVICE1_BASE,			\
+					DEVICE1_SIZE,			\
+					MT_DEVICE | MT_RW | MT_SECURE)
+#endif
+
+#ifdef DEVICE2_BASE
+#define MAP_DEVICE2	MAP_REGION_FLAT(DEVICE2_BASE,			\
+					DEVICE2_SIZE,			\
+					MT_DEVICE | MT_RO | MT_SECURE)
+#endif
+
+#define MAP_SHARED_RAM	MAP_REGION_FLAT(SHARED_RAM_BASE,		\
+					SHARED_RAM_SIZE,		\
+					MT_DEVICE  | MT_RW | MT_SECURE)
+
+#define MAP_BL32_MEM	MAP_REGION_FLAT(BL32_MEM_BASE, BL32_MEM_SIZE,	\
+					MT_MEMORY | MT_RW | MT_SECURE)
+
+#define MAP_NS_DRAM0	MAP_REGION_FLAT(NS_DRAM0_BASE, NS_DRAM0_SIZE,	\
+					MT_MEMORY | MT_RW | MT_NS)
+
+#define MAP_FLASH0	MAP_REGION_FLAT(QEMU_FLASH0_BASE, QEMU_FLASH0_SIZE, \
+					MT_MEMORY | MT_RO | MT_SECURE)
+
+/*
+ * Table of regions for various BL stages to map using the MMU.
+ * This doesn't include TZRAM as the 'mem_layout' argument passed to
+ * arm_configure_mmu_elx() will give the available subset of that,
+ */
+#if IMAGE_BL1
+static const mmap_region_t plat_qemu_mmap[] = {
+	MAP_FLASH0,
+	MAP_SHARED_RAM,
+	MAP_DEVICE0,
+#ifdef MAP_DEVICE1
+	MAP_DEVICE1,
+#endif
+#ifdef MAP_DEVICE2
+	MAP_DEVICE2,
+#endif
+	{0}
+};
+#endif
+#if IMAGE_BL2
+static const mmap_region_t plat_qemu_mmap[] = {
+	MAP_FLASH0,
+	MAP_SHARED_RAM,
+	MAP_DEVICE0,
+#ifdef MAP_DEVICE1
+	MAP_DEVICE1,
+#endif
+#ifdef MAP_DEVICE2
+	MAP_DEVICE2,
+#endif
+	MAP_NS_DRAM0,
+	MAP_BL32_MEM,
+	{0}
+};
+#endif
+#if IMAGE_BL31
+static const mmap_region_t plat_qemu_mmap[] = {
+	MAP_SHARED_RAM,
+	MAP_DEVICE0,
+#ifdef MAP_DEVICE1
+	MAP_DEVICE1,
+#endif
+	MAP_BL32_MEM,
+	{0}
+};
+#endif
+
+/*******************************************************************************
+ * Macro generating the code for the function setting up the pagetables as per
+ * the platform memory map & initialize the mmu, for the given exception level
+ ******************************************************************************/
+
+#define DEFINE_CONFIGURE_MMU_EL(_el)					\
+	void qemu_configure_mmu_el##_el(unsigned long total_base,	\
+				   unsigned long total_size,		\
+				   unsigned long ro_start,		\
+				   unsigned long ro_limit,		\
+				   unsigned long coh_start,		\
+				   unsigned long coh_limit)		\
+	{								\
+		mmap_add_region(total_base, total_base,			\
+				total_size,				\
+				MT_MEMORY | MT_RW | MT_SECURE);		\
+		mmap_add_region(ro_start, ro_start,			\
+				ro_limit - ro_start,			\
+				MT_MEMORY | MT_RO | MT_SECURE);		\
+		mmap_add_region(coh_start, coh_start,			\
+				coh_limit - coh_start,			\
+				MT_DEVICE | MT_RW | MT_SECURE);		\
+		mmap_add(plat_qemu_mmap);				\
+		init_xlat_tables();					\
+									\
+		enable_mmu_el##_el(0);					\
+	}
+
+/* Define EL1 and EL3 variants of the function initialising the MMU */
+DEFINE_CONFIGURE_MMU_EL(1)
+DEFINE_CONFIGURE_MMU_EL(3)
+
+