Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 250 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..19ee1b0
--- /dev/null
+++ b/plat/arm/common/arm_io_storage.c
@@ -0,0 +1,250 @@
+/*
+ * Copyright (c) 2015-2021, ARM Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <drivers/fwu/fwu_metadata.h>
+#include <drivers/io/io_driver.h>
+#include <drivers/io/io_fip.h>
+#include <drivers/io/io_memmap.h>
+#include <drivers/io/io_storage.h>
+#include <drivers/partition/partition.h>
+#include <lib/utils.h>
+
+#include <plat/arm/common/arm_fconf_getter.h>
+#include <plat/arm/common/arm_fconf_io_storage.h>
+#include <plat/arm/common/plat_arm.h>
+#include <plat/common/platform.h>
+#include <platform_def.h>
+
+/* IO devices */
+static const io_dev_connector_t *fip_dev_con;
+uintptr_t fip_dev_handle;
+static const io_dev_connector_t *memmap_dev_con;
+uintptr_t memmap_dev_handle;
+
+#if ARM_GPT_SUPPORT
+/* fip partition names */
+static const char * const fip_part_names[] = {"FIP_A", "FIP_B"};
+CASSERT(sizeof(fip_part_names)/sizeof(char *) == NR_OF_FW_BANKS,
+	assert_fip_partition_names_missing);
+#endif /* ARM_GPT_SUPPORT */
+
+/* Weak definitions may be overridden in specific ARM standard platform */
+#pragma weak plat_arm_io_setup
+#pragma weak plat_arm_get_alt_image_source
+
+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;
+}
+
+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;
+}
+
+int arm_io_setup(void)
+{
+	int io_result;
+
+	io_result = register_io_dev_fip(&fip_dev_con);
+	if (io_result < 0) {
+		return io_result;
+	}
+
+	io_result = register_io_dev_memmap(&memmap_dev_con);
+	if (io_result < 0) {
+		return io_result;
+	}
+
+	/* Open connections to devices and cache the handles */
+	io_result = io_dev_open(fip_dev_con, (uintptr_t)NULL,
+				&fip_dev_handle);
+	if (io_result < 0) {
+		return io_result;
+	}
+
+	io_result = io_dev_open(memmap_dev_con, (uintptr_t)NULL,
+				&memmap_dev_handle);
+
+	return io_result;
+}
+
+void plat_arm_io_setup(void)
+{
+	int err;
+
+	err = arm_io_setup();
+	if (err < 0) {
+		panic();
+	}
+}
+
+int plat_arm_get_alt_image_source(
+	unsigned int image_id __unused,
+	uintptr_t *dev_handle __unused,
+	uintptr_t *image_spec __unused)
+{
+	/* By default do not try an alternative */
+	return -ENOENT;
+}
+
+/* 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;
+
+	policy = FCONF_GET_PROPERTY(arm, io_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 = plat_arm_get_alt_image_source(image_id, dev_handle,
+						       image_spec);
+	}
+
+	return result;
+}
+
+/*
+ * See if a Firmware Image Package is available,
+ * by checking if TOC is valid or not.
+ */
+bool arm_io_is_toc_valid(void)
+{
+	return (io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_ID) == 0);
+}
+
+#if ARM_GPT_SUPPORT
+/******************************************************************************
+ * Retrieve partition entry details such as offset and length, and set these
+ * details in the I/O policy of the requested image.
+ *
+ * @image_id: image id whose I/O policy to be updated
+ *
+ * @part_name: partition name whose details to be retrieved
+ *
+ * Returns 0 on success, error otherwise
+ * Alongside, returns device handle and image specification of requested
+ * image.
+ ******************************************************************************/
+int arm_set_image_source(unsigned int image_id, const char *part_name,
+			 uintptr_t *dev_handle, uintptr_t *image_spec)
+{
+	const partition_entry_t *entry = get_partition_entry(part_name);
+
+	if (entry == NULL) {
+		ERROR("Unable to find the %s partition\n", part_name);
+		return -ENOENT;
+	}
+
+	struct plat_io_policy *policy = FCONF_GET_PROPERTY(arm,
+							   io_policies,
+							   image_id);
+
+	assert(policy != NULL);
+	assert(policy->image_spec != 0UL);
+
+	io_block_spec_t *spec = (io_block_spec_t *)policy->image_spec;
+	/* set offset and length of the image */
+	spec->offset = PLAT_ARM_FLASH_IMAGE_BASE + entry->start;
+	spec->length = entry->length;
+
+	*dev_handle = *(policy->dev_handle);
+	*image_spec = policy->image_spec;
+
+	return 0;
+}
+
+/*******************************************************************************
+ * Set the source offset and length of the FIP image in its I/O policy.
+ *
+ * @active_fw_bank_idx: active firmware bank index gathered from FWU metadata.
+ ******************************************************************************/
+void arm_set_fip_addr(uint32_t active_fw_bank_idx)
+{
+	uintptr_t dev_handle __unused;
+	uintptr_t image_spec __unused;
+
+	assert(active_fw_bank_idx < NR_OF_FW_BANKS);
+
+	INFO("Booting with partition %s\n", fip_part_names[active_fw_bank_idx]);
+
+	int result = arm_set_image_source(FIP_IMAGE_ID,
+					  fip_part_names[active_fw_bank_idx],
+					  &dev_handle,
+					  &image_spec);
+	if (result != 0) {
+		panic();
+	}
+}
+#endif /* ARM_GPT_SUPPORT */
+
+#if PSA_FWU_SUPPORT
+/*******************************************************************************
+ * Read the FIP partition of the GPT image corresponding to the active firmware
+ * bank to get its offset and length, and update these details in the I/O policy
+ * of the FIP image.
+ ******************************************************************************/
+void plat_fwu_set_images_source(const struct fwu_metadata *metadata)
+{
+	arm_set_fip_addr(metadata->active_index);
+}
+
+/*******************************************************************************
+ * Read the requested FWU metadata partition of the GPT image to get its offset
+ * and length, and update these details in the I/O policy of the requested FWU
+ * metadata image.
+ ******************************************************************************/
+int plat_fwu_set_metadata_image_source(unsigned int image_id,
+				       uintptr_t *dev_handle,
+				       uintptr_t *image_spec)
+{
+	int result = -1;
+
+	if (image_id == FWU_METADATA_IMAGE_ID) {
+		result = arm_set_image_source(FWU_METADATA_IMAGE_ID,
+					      "FWU-Metadata",
+					      dev_handle,
+					      image_spec);
+	} else if (image_id == BKUP_FWU_METADATA_IMAGE_ID) {
+		result = arm_set_image_source(BKUP_FWU_METADATA_IMAGE_ID,
+					      "Bkup-FWU-Metadata",
+					      dev_handle,
+					      image_spec);
+	}
+
+	return result;
+}
+#endif /* PSA_FWU_SUPPORT */