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744d60aab4
Add common/debug.h and libfdt.h files to the common file for XILINX_OF_BOARD_DTB_ADDR configuration. Signed-off-by: Akshay Belsare <akshay.belsare@amd.com> Change-Id: I577cc018eda34e186e48594a62c54eb55f11bbd3
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/*
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* Copyright (c) 2023, 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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*/
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#include <common/debug.h>
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#include <common/fdt_fixup.h>
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#include <common/fdt_wrappers.h>
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#include <libfdt.h>
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#include <plat_fdt.h>
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#include <platform_def.h>
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#if (defined(XILINX_OF_BOARD_DTB_ADDR) && !IS_TFA_IN_OCM(BL31_BASE))
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void prepare_dtb(void)
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{
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void *dtb = (void *)XILINX_OF_BOARD_DTB_ADDR;
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int ret;
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/* Return if no device tree is detected */
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if (fdt_check_header(dtb) != 0) {
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NOTICE("Can't read DT at %p\n", dtb);
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return;
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}
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ret = fdt_open_into(dtb, dtb, XILINX_OF_BOARD_DTB_MAX_SIZE);
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if (ret < 0) {
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ERROR("Invalid Device Tree at %p: error %d\n", dtb, ret);
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return;
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}
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/* Reserve memory used by Trusted Firmware. */
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if (fdt_add_reserved_memory(dtb, "tf-a", BL31_BASE, BL31_LIMIT - BL31_BASE + 1)) {
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WARN("Failed to add reserved memory nodes for BL31 to DT.\n");
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return;
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}
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ret = fdt_pack(dtb);
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if (ret < 0) {
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ERROR("Failed to pack Device Tree at %p: error %d\n", dtb, ret);
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return;
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}
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clean_dcache_range((uintptr_t)dtb, fdt_blob_size(dtb));
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INFO("Changed device tree to advertise PSCI and reserved memories.\n");
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}
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#else
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void prepare_dtb(void)
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{
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}
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#endif
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