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a82c08849e
Saves physical FDT and do basic sanity checking. Tracked-On: #8838 Signed-off-by: Yifan Liu <yifan1.liu@intel.com> Acked-by: Wang Yu1 <yu1.wang@intel.com>
38 lines
760 B
C
38 lines
760 B
C
/*
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* Copyright (C) 2025 Intel Corporation.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <types.h>
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#include <libfdt.h>
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#include <logmsg.h>
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#include <memory.h>
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#include <pgtable.h>
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#include <fdt_api.h>
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/* storage of raw fdt */
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static uint8_t host_fdt_raw[MAX_FDT_SIZE];
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void init_devtree(uint64_t fdt_paddr)
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{
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void *fdt = hpa2hva_early(fdt_paddr);
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if (fdt_check_header(fdt) == 0) {
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if (fdt_totalsize(fdt) >= MAX_FDT_SIZE) {
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panic("FDT size 0x%x larger than configured maximum 0x%x",
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fdt_totalsize(fdt), MAX_FDT_SIZE);
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}
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/* copy raw data */
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fdt_move(fdt, host_fdt_raw, MAX_FDT_SIZE);
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} else {
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panic("Device tree not found or not supported", fdt_paddr);
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}
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}
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uint8_t *get_host_fdt(void)
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{
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return (uint8_t *)host_fdt_raw;
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}
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