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, 378 insertions, 0 deletions

diff --git a/plat/qemu/qemu_io_storage.c b/plat/qemu/qemu_io_storage.c
new file mode 100644
index 00000000..b7951b7d
--- /dev/null
+++ b/plat/qemu/qemu_io_storage.c
@@ -0,0 +1,378 @@
+/*
+ * 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>		/* For ARRAY_SIZE */
+#include <debug.h>
+#include <firmware_image_package.h>
+#include <io_driver.h>
+#include <io_fip.h>
+#include <io_memmap.h>
+#include <io_semihosting.h>
+#include <io_storage.h>
+#include <platform_def.h>
+#include <semihosting.h>
+#include <string.h>
+
+/* Semihosting filenames */
+#define BL2_IMAGE_NAME			"bl2.bin"
+#define BL31_IMAGE_NAME			"bl31.bin"
+#define BL32_IMAGE_NAME			"bl32.bin"
+#define BL33_IMAGE_NAME			"bl33.bin"
+
+#if TRUSTED_BOARD_BOOT
+#define BL2_CERT_NAME			"bl2.crt"
+#define TRUSTED_KEY_CERT_NAME		"trusted_key.crt"
+#define BL31_KEY_CERT_NAME		"bl31_key.crt"
+#define BL32_KEY_CERT_NAME		"bl32_key.crt"
+#define BL33_KEY_CERT_NAME		"bl33_key.crt"
+#define BL31_CERT_NAME			"bl31.crt"
+#define BL32_CERT_NAME			"bl32.crt"
+#define BL33_CERT_NAME			"bl33.crt"
+#endif /* TRUSTED_BOARD_BOOT */
+
+
+
+/* IO devices */
+static const io_dev_connector_t *fip_dev_con;
+static uintptr_t fip_dev_handle;
+static const io_dev_connector_t *memmap_dev_con;
+static uintptr_t memmap_dev_handle;
+static const io_dev_connector_t *sh_dev_con;
+static uintptr_t sh_dev_handle;
+
+static const io_block_spec_t fip_block_spec = {
+	.offset = PLAT_QEMU_FIP_BASE,
+	.length = PLAT_QEMU_FIP_MAX_SIZE
+};
+
+static const io_uuid_spec_t bl2_uuid_spec = {
+	.uuid = UUID_TRUSTED_BOOT_FIRMWARE_BL2,
+};
+
+static const io_uuid_spec_t bl31_uuid_spec = {
+	.uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31,
+};
+
+static const io_uuid_spec_t bl32_uuid_spec = {
+	.uuid = UUID_SECURE_PAYLOAD_BL32,
+};
+
+static const io_uuid_spec_t bl33_uuid_spec = {
+	.uuid = UUID_NON_TRUSTED_FIRMWARE_BL33,
+};
+
+#if TRUSTED_BOARD_BOOT
+static const io_uuid_spec_t bl2_cert_uuid_spec = {
+	.uuid = UUID_TRUSTED_BOOT_FIRMWARE_BL2_CERT,
+};
+
+static const io_uuid_spec_t trusted_key_cert_uuid_spec = {
+	.uuid = UUID_TRUSTED_KEY_CERT,
+};
+
+static const io_uuid_spec_t bl31_key_cert_uuid_spec = {
+	.uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31_KEY_CERT,
+};
+
+static const io_uuid_spec_t bl32_key_cert_uuid_spec = {
+	.uuid = UUID_SECURE_PAYLOAD_BL32_KEY_CERT,
+};
+
+static const io_uuid_spec_t bl33_key_cert_uuid_spec = {
+	.uuid = UUID_NON_TRUSTED_FIRMWARE_BL33_KEY_CERT,
+};
+
+static const io_uuid_spec_t bl31_cert_uuid_spec = {
+	.uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31_CERT,
+};
+
+static const io_uuid_spec_t bl32_cert_uuid_spec = {
+	.uuid = UUID_SECURE_PAYLOAD_BL32_CERT,
+};
+
+static const io_uuid_spec_t bl33_cert_uuid_spec = {
+	.uuid = UUID_NON_TRUSTED_FIRMWARE_BL33_CERT,
+};
+#endif /* TRUSTED_BOARD_BOOT */
+
+static const io_file_spec_t sh_file_spec[] = {
+	[BL2_IMAGE_ID] = {
+		.path = BL2_IMAGE_NAME,
+		.mode = FOPEN_MODE_RB
+	},
+	[BL31_IMAGE_ID] = {
+		.path = BL31_IMAGE_NAME,
+		.mode = FOPEN_MODE_RB
+	},
+	[BL32_IMAGE_ID] = {
+		.path = BL32_IMAGE_NAME,
+		.mode = FOPEN_MODE_RB
+	},
+	[BL33_IMAGE_ID] = {
+		.path = BL33_IMAGE_NAME,
+		.mode = FOPEN_MODE_RB
+	},
+#if TRUSTED_BOARD_BOOT
+	[BL2_CERT_ID] = {
+		.path = BL2_CERT_NAME,
+		.mode = FOPEN_MODE_RB
+	},
+	[TRUSTED_KEY_CERT_ID] = {
+		.path = TRUSTED_KEY_CERT_NAME,
+		.mode = FOPEN_MODE_RB
+	},
+	[BL31_KEY_CERT_ID] = {
+		.path = BL31_KEY_CERT_NAME,
+		.mode = FOPEN_MODE_RB
+	},
+	[BL32_KEY_CERT_ID] = {
+		.path = BL32_KEY_CERT_NAME,
+		.mode = FOPEN_MODE_RB
+	},
+	[BL33_KEY_CERT_ID] = {
+		.path = BL33_KEY_CERT_NAME,
+		.mode = FOPEN_MODE_RB
+	},
+	[BL31_CERT_ID] = {
+		.path = BL31_CERT_NAME,
+		.mode = FOPEN_MODE_RB
+	},
+	[BL32_CERT_ID] = {
+		.path = BL32_CERT_NAME,
+		.mode = FOPEN_MODE_RB
+	},
+	[BL33_CERT_ID] = {
+		.path = BL33_CERT_NAME,
+		.mode = FOPEN_MODE_RB
+	},
+#endif /* TRUSTED_BOARD_BOOT */
+};
+
+
+
+static int open_fip(const uintptr_t spec);
+static int open_memmap(const uintptr_t spec);
+
+struct plat_io_policy {
+	uintptr_t *dev_handle;
+	uintptr_t image_spec;
+	int (*check)(const uintptr_t spec);
+};
+
+/* By default, ARM platforms load images from the FIP */
+static const struct plat_io_policy policies[] = {
+	[FIP_IMAGE_ID] = {
+		&memmap_dev_handle,
+		(uintptr_t)&fip_block_spec,
+		open_memmap
+	},
+	[BL2_IMAGE_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl2_uuid_spec,
+		open_fip
+	},
+	[BL31_IMAGE_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl31_uuid_spec,
+		open_fip
+	},
+	[BL32_IMAGE_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl32_uuid_spec,
+		open_fip
+	},
+	[BL33_IMAGE_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl33_uuid_spec,
+		open_fip
+	},
+#if TRUSTED_BOARD_BOOT
+	[BL2_CERT_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl2_cert_uuid_spec,
+		open_fip
+	},
+	[TRUSTED_KEY_CERT_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&trusted_key_cert_uuid_spec,
+		open_fip
+	},
+	[BL31_KEY_CERT_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl31_key_cert_uuid_spec,
+		open_fip
+	},
+	[BL32_KEY_CERT_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl32_key_cert_uuid_spec,
+		open_fip
+	},
+	[BL33_KEY_CERT_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl33_key_cert_uuid_spec,
+		open_fip
+	},
+	[BL31_CERT_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl31_cert_uuid_spec,
+		open_fip
+	},
+	[BL32_CERT_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl32_cert_uuid_spec,
+		open_fip
+	},
+	[BL33_CERT_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl33_cert_uuid_spec,
+		open_fip
+	},
+#endif /* TRUSTED_BOARD_BOOT */
+};
+
+static int open_fip(const uintptr_t spec)
+{
+	int result;
+	uintptr_t local_image_handle;
+
+	/* See if a Firmware Image Package is available */
+	result = io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_ID);
+	if (result == 0) {
+		result = io_open(fip_dev_handle, spec, &local_image_handle);
+		if (result == 0) {
+			VERBOSE("Using FIP\n");
+			io_close(local_image_handle);
+		}
+	}
+	return result;
+}
+
+static int open_memmap(const uintptr_t spec)
+{
+	int result;
+	uintptr_t local_image_handle;
+
+	result = io_dev_init(memmap_dev_handle, (uintptr_t)NULL);
+	if (result == 0) {
+		result = io_open(memmap_dev_handle, spec, &local_image_handle);
+		if (result == 0) {
+			VERBOSE("Using Memmap\n");
+			io_close(local_image_handle);
+		}
+	}
+	return result;
+}
+
+static int open_semihosting(const uintptr_t spec)
+{
+	int result;
+	uintptr_t local_image_handle;
+
+	/* See if the file exists on semi-hosting.*/
+	result = io_dev_init(sh_dev_handle, (uintptr_t)NULL);
+	if (result == 0) {
+		result = io_open(sh_dev_handle, spec, &local_image_handle);
+		if (result == 0) {
+			VERBOSE("Using Semi-hosting IO\n");
+			io_close(local_image_handle);
+		}
+	}
+	return result;
+}
+
+void plat_qemu_io_setup(void)
+{
+	int io_result;
+
+	io_result = register_io_dev_fip(&fip_dev_con);
+	assert(io_result == 0);
+
+	io_result = register_io_dev_memmap(&memmap_dev_con);
+	assert(io_result == 0);
+
+	/* Open connections to devices and cache the handles */
+	io_result = io_dev_open(fip_dev_con, (uintptr_t)NULL,
+				&fip_dev_handle);
+	assert(io_result == 0);
+
+	io_result = io_dev_open(memmap_dev_con, (uintptr_t)NULL,
+				&memmap_dev_handle);
+	assert(io_result == 0);
+
+	/* Register the additional IO devices on this platform */
+	io_result = register_io_dev_sh(&sh_dev_con);
+	assert(io_result == 0);
+
+	/* Open connections to devices and cache the handles */
+	io_result = io_dev_open(sh_dev_con, (uintptr_t)NULL, &sh_dev_handle);
+	assert(io_result == 0);
+
+	/* Ignore improbable errors in release builds */
+	(void)io_result;
+}
+
+static int get_alt_image_source(unsigned int image_id, uintptr_t *dev_handle,
+				  uintptr_t *image_spec)
+{
+	int result = open_semihosting((const uintptr_t)&sh_file_spec[image_id]);
+
+	if (result == 0) {
+		*dev_handle = sh_dev_handle;
+		*image_spec = (uintptr_t)&sh_file_spec[image_id];
+	}
+
+	return result;
+}
+
+/*
+ * Return an IO device handle and specification which can be used to access
+ * an image. Use this to enforce platform load policy
+ */
+int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle,
+			  uintptr_t *image_spec)
+{
+	int result;
+	const struct plat_io_policy *policy;
+
+	assert(image_id < ARRAY_SIZE(policies));
+
+	policy = &policies[image_id];
+	result = policy->check(policy->image_spec);
+	if (result == 0) {
+		*image_spec = policy->image_spec;
+		*dev_handle = *(policy->dev_handle);
+	} else {
+		VERBOSE("Trying alternative IO\n");
+		result = get_alt_image_source(image_id, dev_handle, image_spec);
+	}
+
+	return result;
+}