1 files changed, 337 insertions, 0 deletions
diff --git a/plat/arm/common/arm_io_storage.c b/plat/arm/common/arm_io_storage.c
new file mode 100644
index 0000000..ea29313
--- /dev/null
+++ b/plat/arm/common/arm_io_storage.c
@@ -0,0 +1,337 @@
+/*
+ * Copyright (c) 2015, 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 <debug.h>
+#include <io_driver.h>
+#include <io_fip.h>
+#include <io_memmap.h>
+#include <io_storage.h>
+#include <platform_def.h>
+#include <semihosting.h>	/* For FOPEN_MODE_... */
+#include <string.h>
+
+/* 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_block_spec_t fip_block_spec = {
+	.offset = PLAT_ARM_FIP_BASE,
+	.length = PLAT_ARM_FIP_MAX_SIZE
+};
+
+static const io_file_spec_t bl2_file_spec = {
+	.path = BL2_IMAGE_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t bl30_file_spec = {
+	.path = BL30_IMAGE_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t bl31_file_spec = {
+	.path = BL31_IMAGE_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t bl32_file_spec = {
+	.path = BL32_IMAGE_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t bl33_file_spec = {
+	.path = BL33_IMAGE_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+#if TRUSTED_BOARD_BOOT
+static const io_file_spec_t bl2_cert_file_spec = {
+	.path = BL2_CERT_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t trusted_key_cert_file_spec = {
+	.path = TRUSTED_KEY_CERT_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t bl30_key_cert_file_spec = {
+	.path = BL30_KEY_CERT_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t bl31_key_cert_file_spec = {
+	.path = BL31_KEY_CERT_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t bl32_key_cert_file_spec = {
+	.path = BL32_KEY_CERT_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t bl33_key_cert_file_spec = {
+	.path = BL33_KEY_CERT_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t bl30_cert_file_spec = {
+	.path = BL30_CERT_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t bl31_cert_file_spec = {
+	.path = BL31_CERT_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t bl32_cert_file_spec = {
+	.path = BL32_CERT_NAME,
+	.mode = FOPEN_MODE_RB
+};
+
+static const io_file_spec_t bl33_cert_file_spec = {
+	.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 {
+	const char *image_name;
+	uintptr_t *dev_handle;
+	uintptr_t image_spec;
+	int (*check)(const uintptr_t spec);
+};
+
+static const struct plat_io_policy policies[] = {
+	{
+		FIP_IMAGE_NAME,
+		&memmap_dev_handle,
+		(uintptr_t)&fip_block_spec,
+		open_memmap
+	}, {
+		BL2_IMAGE_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl2_file_spec,
+		open_fip
+	}, {
+		BL30_IMAGE_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl30_file_spec,
+		open_fip
+	}, {
+		BL31_IMAGE_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl31_file_spec,
+		open_fip
+	}, {
+		BL32_IMAGE_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl32_file_spec,
+		open_fip
+	}, {
+		BL33_IMAGE_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl33_file_spec,
+		open_fip
+	}, {
+#if TRUSTED_BOARD_BOOT
+		BL2_CERT_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl2_cert_file_spec,
+		open_fip
+	}, {
+		TRUSTED_KEY_CERT_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&trusted_key_cert_file_spec,
+		open_fip
+	}, {
+		BL30_KEY_CERT_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl30_key_cert_file_spec,
+		open_fip
+	}, {
+		BL31_KEY_CERT_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl31_key_cert_file_spec,
+		open_fip
+	}, {
+		BL32_KEY_CERT_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl32_key_cert_file_spec,
+		open_fip
+	}, {
+		BL33_KEY_CERT_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl33_key_cert_file_spec,
+		open_fip
+	}, {
+		BL30_CERT_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl30_cert_file_spec,
+		open_fip
+	}, {
+		BL31_CERT_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl31_cert_file_spec,
+		open_fip
+	}, {
+		BL32_CERT_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl32_cert_file_spec,
+		open_fip
+	}, {
+		BL33_CERT_NAME,
+		&fip_dev_handle,
+		(uintptr_t)&bl33_cert_file_spec,
+		open_fip
+	}, {
+#endif /* TRUSTED_BOARD_BOOT */
+		0, 0, 0
+	}
+};
+
+
+/* Weak definitions may be overridden in specific ARM standard platform */
+#pragma weak plat_arm_io_setup
+#pragma weak plat_arm_get_alt_image_source
+
+
+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_NAME);
+	if (result == IO_SUCCESS) {
+		result = io_open(fip_dev_handle, spec, &local_image_handle);
+		if (result == IO_SUCCESS) {
+			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 == IO_SUCCESS) {
+		result = io_open(memmap_dev_handle, spec, &local_image_handle);
+		if (result == IO_SUCCESS) {
+			VERBOSE("Using Memmap\n");
+			io_close(local_image_handle);
+		}
+	}
+	return result;
+}
+
+
+void arm_io_setup(void)
+{
+	int io_result;
+
+	io_result = register_io_dev_fip(&fip_dev_con);
+	assert(io_result == IO_SUCCESS);
+
+	io_result = register_io_dev_memmap(&memmap_dev_con);
+	assert(io_result == IO_SUCCESS);
+
+	/* 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 == IO_SUCCESS);
+
+	io_result = io_dev_open(memmap_dev_con, (uintptr_t)NULL,
+				&memmap_dev_handle);
+	assert(io_result == IO_SUCCESS);
+
+	/* Ignore improbable errors in release builds */
+	(void)io_result;
+}
+
+void plat_arm_io_setup(void)
+{
+	arm_io_setup();
+}
+
+int plat_arm_get_alt_image_source(
+	const uintptr_t image_spec __attribute__((unused)),
+	uintptr_t *dev_handle __attribute__((unused)))
+{
+	/* By default do not try an alternative */
+	return IO_FAIL;
+}
+
+/* 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(const char *image_name, uintptr_t *dev_handle,
+			  uintptr_t *image_spec)
+{
+	int result = IO_FAIL;
+	const struct plat_io_policy *policy;
+
+	if ((image_name != NULL) && (dev_handle != NULL) &&
+	    (image_spec != NULL)) {
+		policy = policies;
+		while (policy->image_name != NULL) {
+			if (strcmp(policy->image_name, image_name) == 0) {
+				result = policy->check(policy->image_spec);
+				if (result == IO_SUCCESS) {
+					*image_spec = policy->image_spec;
+					*dev_handle = *(policy->dev_handle);
+					break;
+				}
+				VERBOSE("Trying alternative IO\n");
+				result = plat_arm_get_alt_image_source(
+						policy->image_spec,
+						dev_handle);
+				if (result == IO_SUCCESS) {
+					*image_spec = policy->image_spec;
+					break;
+				}
+			}
+			policy++;
+		}
+	} else {
+		result = IO_FAIL;
+	}
+	return result;
+}