diff options
Diffstat (limited to 'plat/arm/common/arm_io_storage.c')
| -rw-r--r-- | plat/arm/common/arm_io_storage.c | 114 |
1 files changed, 113 insertions, 1 deletions
diff --git a/plat/arm/common/arm_io_storage.c b/plat/arm/common/arm_io_storage.c index 34b4101e1..387086a29 100644 --- a/plat/arm/common/arm_io_storage.c +++ b/plat/arm/common/arm_io_storage.c @@ -1,14 +1,16 @@ /* - * Copyright (c) 2015-2020, ARM Limited. All rights reserved. + * 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> @@ -23,6 +25,13 @@ 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 @@ -136,3 +145,106 @@ 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(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 */ |