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https://github.com/ARM-software/arm-trusted-firmware.git
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ea453871ef
On versal2 platform, unlike current static DT address passing mechanism, DT address is retrieved from transfer list dynamically. Change-Id: I44b9a0753809652f26bc1b7e061f5364229ba352 Signed-off-by: Maheedhar Bollapalli <maheedharsai.bollapalli@amd.com>
74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
/*
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* Copyright (c) 2023-2025, Advanced Micro Devices, Inc. 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 <stddef.h>
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#include <arch_helpers.h>
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#include <common/debug.h>
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#include <lib/transfer_list.h>
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#include <platform_def.h>
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static struct transfer_list_header *tl_hdr;
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static int32_t tl_ops_holder;
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bool populate_data_from_xfer_list(void)
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{
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bool ret = true;
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tl_hdr = (struct transfer_list_header *)FW_HANDOFF_BASE;
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tl_ops_holder = transfer_list_check_header(tl_hdr);
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if ((tl_ops_holder != TL_OPS_ALL) && (tl_ops_holder != TL_OPS_RO)) {
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ret = false;
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}
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return ret;
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}
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int32_t transfer_list_populate_ep_info(entry_point_info_t *bl32,
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entry_point_info_t *bl33)
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{
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int32_t ret = tl_ops_holder;
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struct transfer_list_entry *te = NULL;
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struct entry_point_info *ep = NULL;
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if ((tl_ops_holder == TL_OPS_ALL) || (tl_ops_holder == TL_OPS_RO)) {
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transfer_list_dump(tl_hdr);
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while ((te = transfer_list_next(tl_hdr, te)) != NULL) {
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ep = transfer_list_entry_data(te);
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if (te->tag_id == TL_TAG_EXEC_EP_INFO64) {
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switch (GET_SECURITY_STATE(ep->h.attr)) {
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case NON_SECURE:
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*bl33 = *ep;
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continue;
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case SECURE:
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*bl32 = *ep;
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continue;
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default:
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ERROR("Unrecognized Image Security State %lu\n",
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GET_SECURITY_STATE(ep->h.attr));
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ret = TL_OPS_NON;
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}
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}
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}
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}
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return ret;
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}
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void *transfer_list_retrieve_dt_address(void)
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{
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void *dtb = NULL;
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struct transfer_list_entry *te = NULL;
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if ((tl_ops_holder == TL_OPS_ALL) || (tl_ops_holder == TL_OPS_RO)) {
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te = transfer_list_find(tl_hdr, TL_TAG_FDT);
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if (te != NULL) {
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dtb = transfer_list_entry_data(te);
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}
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}
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return dtb;
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}
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