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https://github.com/ARM-software/arm-trusted-firmware.git
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d5a84eeaac
Introduced IO policies management through the trusted boot firmware config device tree for UUID references. Change-Id: Ibeeabede51b0514ebba26dbbdae587363b2aa0a7 Signed-off-by: Lionel Debieve <lionel.debieve@st.com> Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/*
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* Copyright (c) 2021, STMicroelectronics - All Rights Reserved
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <common/debug.h>
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#include <common/fdt_wrappers.h>
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#include <drivers/io/io_storage.h>
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#include <drivers/mmc.h>
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#include <lib/fconf/fconf.h>
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#include <lib/object_pool.h>
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#include <libfdt.h>
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#include <tools_share/firmware_image_package.h>
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#include <platform_def.h>
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#include <stm32mp_fconf_getter.h>
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#include <stm32mp_io_storage.h>
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#if STM32MP_SDMMC || STM32MP_EMMC
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static io_block_spec_t gpt_block_spec = {
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.offset = 0U,
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.length = 34U * MMC_BLOCK_SIZE, /* Size of GPT table */
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};
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#endif
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/* By default, STM32 platforms load images from the FIP */
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struct plat_io_policy policies[MAX_NUMBER_IDS] = {
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[FIP_IMAGE_ID] = {
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&storage_dev_handle,
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(uintptr_t)&image_block_spec,
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open_storage
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},
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#if STM32MP_SDMMC || STM32MP_EMMC
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[GPT_IMAGE_ID] = {
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&storage_dev_handle,
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(uintptr_t)&gpt_block_spec,
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open_storage
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},
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#endif
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};
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#define FCONF_ST_IO_UUID_NUMBER U(8)
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static io_uuid_spec_t fconf_stm32mp_uuids[FCONF_ST_IO_UUID_NUMBER];
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static OBJECT_POOL_ARRAY(fconf_stm32mp_uuids_pool, fconf_stm32mp_uuids);
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struct policies_load_info {
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unsigned int image_id;
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const char *name;
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};
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/* image id to property name table */
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static const struct policies_load_info load_info[FCONF_ST_IO_UUID_NUMBER] = {
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{FW_CONFIG_ID, "fw_cfg_uuid"},
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{BL32_IMAGE_ID, "bl32_uuid"},
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{BL32_EXTRA1_IMAGE_ID, "bl32_extra1_uuid"},
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{BL32_EXTRA2_IMAGE_ID, "bl32_extra2_uuid"},
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{BL33_IMAGE_ID, "bl33_uuid"},
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{HW_CONFIG_ID, "hw_cfg_uuid"},
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{TOS_FW_CONFIG_ID, "tos_fw_cfg_uuid"},
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{NT_FW_CONFIG_ID, "nt_fw_cfg_uuid"},
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};
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int fconf_populate_stm32mp_io_policies(uintptr_t config)
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{
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int node;
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unsigned int i;
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/* As libfdt uses void *, we can't avoid this cast */
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const void *dtb = (void *)config;
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/* Assert the node offset point to "st,io-fip-handle" compatible property */
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const char *compatible_str = "st,io-fip-handle";
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node = fdt_node_offset_by_compatible(dtb, -1, compatible_str);
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if (node < 0) {
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ERROR("FCONF: Can't find %s compatible in dtb\n", compatible_str);
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return node;
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}
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/* Locate the uuid cells and read the value for all the load info uuid */
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for (i = 0U; i < FCONF_ST_IO_UUID_NUMBER; i++) {
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union uuid_helper_t uuid_helper;
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io_uuid_spec_t *uuid_ptr;
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int err;
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uuid_ptr = pool_alloc(&fconf_stm32mp_uuids_pool);
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err = fdtw_read_uuid(dtb, node, load_info[i].name, 16,
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(uint8_t *)&uuid_helper);
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if (err < 0) {
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WARN("FCONF: Read cell failed for %s\n", load_info[i].name);
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return err;
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}
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VERBOSE("FCONF: stm32mp-io_policies.%s cell found with value = "
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"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n",
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load_info[i].name,
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uuid_helper.uuid_struct.time_low[0], uuid_helper.uuid_struct.time_low[1],
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uuid_helper.uuid_struct.time_low[2], uuid_helper.uuid_struct.time_low[3],
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uuid_helper.uuid_struct.time_mid[0], uuid_helper.uuid_struct.time_mid[1],
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uuid_helper.uuid_struct.time_hi_and_version[0],
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uuid_helper.uuid_struct.time_hi_and_version[1],
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uuid_helper.uuid_struct.clock_seq_hi_and_reserved,
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uuid_helper.uuid_struct.clock_seq_low,
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uuid_helper.uuid_struct.node[0], uuid_helper.uuid_struct.node[1],
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uuid_helper.uuid_struct.node[2], uuid_helper.uuid_struct.node[3],
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uuid_helper.uuid_struct.node[4], uuid_helper.uuid_struct.node[5]);
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uuid_ptr->uuid = uuid_helper.uuid_struct;
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policies[load_info[i].image_id].image_spec = (uintptr_t)uuid_ptr;
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policies[load_info[i].image_id].dev_handle = &fip_dev_handle;
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policies[load_info[i].image_id].check = open_fip;
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}
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return 0;
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}
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FCONF_REGISTER_POPULATOR(TB_FW, stm32mp_io, fconf_populate_stm32mp_io_policies);
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