uniphier: support Socionext UniPhier platform

Initial commit for Socionext UniPhier SoC support.  BL1, Bl2, and
BL31 are supported.  Refer to docs/plat/socionext-uniphier.md for
more detais.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/plat/socionext/uniphier/uniphier_bl31_setup.c b/plat/socionext/uniphier/uniphier_bl31_setup.c
new file mode 100644
index 0000000..d9c87bd
--- /dev/null
+++ b/plat/socionext/uniphier/uniphier_bl31_setup.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <assert.h>
+#include <bl_common.h>
+#include <console.h>
+#include <debug.h>
+#include <errno.h>
+#include <mmio.h>
+#include <platform.h>
+#include <platform_def.h>
+#include <xlat_mmu_helpers.h>
+
+#include "uniphier.h"
+
+#define BL31_END		(unsigned long)(&__BL31_END__)
+#define BL31_SIZE		((BL31_END) - (BL31_BASE))
+
+static entry_point_info_t bl32_image_ep_info;
+static entry_point_info_t bl33_image_ep_info;
+
+entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
+{
+	assert(sec_state_is_valid(type));
+	return type == NON_SECURE ? &bl33_image_ep_info : &bl32_image_ep_info;
+}
+
+void bl31_early_platform_setup(void *from_bl2, void *plat_params_from_bl2)
+{
+	bl_params_node_t *bl_params = ((bl_params_t *)from_bl2)->head;
+
+	uniphier_console_setup();
+
+	while (bl_params) {
+		if (bl_params->image_id == BL32_IMAGE_ID)
+			bl32_image_ep_info = *bl_params->ep_info;
+
+		if (bl_params->image_id == BL33_IMAGE_ID)
+			bl33_image_ep_info = *bl_params->ep_info;
+
+		bl_params = bl_params->next_params_info;
+	}
+
+	if (bl33_image_ep_info.pc == 0)
+		panic();
+}
+
+#define UNIPHIER_SYS_CNTCTL_BASE	0x60E00000
+
+void bl31_platform_setup(void)
+{
+	unsigned int soc;
+
+	soc = uniphier_get_soc_id();
+	if (soc == UNIPHIER_SOC_UNKNOWN) {
+		ERROR("unsupported SoC\n");
+		plat_error_handler(-ENOTSUP);
+	}
+
+	uniphier_cci_init(soc);
+	uniphier_cci_enable();
+
+	/* Initialize the GIC driver, cpu and distributor interfaces */
+	uniphier_gic_driver_init(soc);
+	uniphier_gic_init();
+
+	/* Enable and initialize the System level generic timer */
+	mmio_write_32(UNIPHIER_SYS_CNTCTL_BASE + CNTCR_OFF,
+			CNTCR_FCREQ(0) | CNTCR_EN);
+}
+
+void bl31_plat_arch_setup(void)
+{
+	uniphier_mmap_setup(BL31_BASE, BL31_SIZE, NULL);
+	enable_mmu_el3(0);
+}
+
+void bl31_plat_runtime_setup(void)
+{
+	/* Suppress any runtime logs unless DEBUG is defined */
+#if !DEBUG
+	console_uninit();
+#endif
+}