85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
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/*
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* Copyright (c) 2020, ARM Limited and Contributors. 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 <lib/object_pool.h>
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#include <libfdt.h>
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#include <plat/arm/common/arm_fconf_getter.h>
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#include <plat/arm/common/arm_fconf_io_storage.h>
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#include <plat/arm/common/fconf_arm_sp_getter.h>
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#include <platform_def.h>
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#include <tools_share/firmware_image_package.h>
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#ifdef IMAGE_BL2
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struct arm_sp_t arm_sp;
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int fconf_populate_arm_sp(uintptr_t config)
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{
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int sp_node, node, err;
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union uuid_helper_t uuid_helper;
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/* As libfdt use 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 "arm,sp" compatible property */
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const char *compatible_str = "arm,sp";
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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 in dtb\n", compatible_str);
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return node;
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}
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fdt_for_each_subnode(sp_node, dtb, node) {
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err = fdtw_read_array(dtb, sp_node, "uuid", 4,
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&uuid_helper.word);
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if (err < 0) {
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ERROR("FCONF: cannot read SP uuid\n");
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return -1;
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}
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arm_sp.uuids[arm_sp.number_of_sp] = uuid_helper;
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err = fdtw_read_cells(dtb, sp_node, "load-address", 1,
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&arm_sp.load_addr[arm_sp.number_of_sp]);
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if (err < 0) {
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ERROR("FCONF: cannot read SP load address\n");
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return -1;
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}
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VERBOSE("FCONF: %s UUID %x-%x-%x-%x load_addr=%lx\n",
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__func__,
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uuid_helper.word[0],
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uuid_helper.word[1],
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uuid_helper.word[2],
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uuid_helper.word[3],
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arm_sp.load_addr[arm_sp.number_of_sp]);
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arm_sp.number_of_sp++;
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if (arm_sp.number_of_sp >= MAX_SP_IDS) {
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ERROR("FCONF: reached max number of SPs\n");
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return -1;
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}
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}
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if ((sp_node < 0) && (sp_node != -FDT_ERR_NOTFOUND)) {
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ERROR("%d: fdt_for_each_subnode(): %d\n", __LINE__, node);
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return sp_node;
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}
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return 0;
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}
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FCONF_REGISTER_POPULATOR(arm_sp, fconf_populate_arm_sp);
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#endif /* IMAGE_BL2 */
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