120 lines
4.2 KiB
C
120 lines
4.2 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2013 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_FDT_HEADER
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#define GRUB_FDT_HEADER 1
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#include <grub/types.h>
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#define FDT_MAGIC 0xD00DFEED
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typedef struct {
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grub_uint32_t magic;
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grub_uint32_t totalsize;
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grub_uint32_t off_dt_struct;
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grub_uint32_t off_dt_strings;
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grub_uint32_t off_mem_rsvmap;
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grub_uint32_t version;
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grub_uint32_t last_comp_version;
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grub_uint32_t boot_cpuid_phys;
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grub_uint32_t size_dt_strings;
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grub_uint32_t size_dt_struct;
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} grub_fdt_header_t;
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struct grub_fdt_empty_tree {
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grub_fdt_header_t header;
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grub_uint64_t empty_rsvmap[2];
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struct {
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grub_uint32_t node_start;
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grub_uint8_t name[1];
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grub_uint32_t node_end;
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grub_uint32_t tree_end;
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} empty_node;
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};
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#define GRUB_FDT_EMPTY_TREE_SZ sizeof (struct grub_fdt_empty_tree)
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#define grub_fdt_get_header(fdt, field) \
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grub_be_to_cpu32(((const grub_fdt_header_t *)(fdt))->field)
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#define grub_fdt_set_header(fdt, field, value) \
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((grub_fdt_header_t *)(fdt))->field = grub_cpu_to_be32(value)
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#define grub_fdt_get_magic(fdt) \
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grub_fdt_get_header(fdt, magic)
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#define grub_fdt_set_magic(fdt, value) \
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grub_fdt_set_header(fdt, magic, value)
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#define grub_fdt_get_totalsize(fdt) \
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grub_fdt_get_header(fdt, totalsize)
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#define grub_fdt_set_totalsize(fdt, value) \
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grub_fdt_set_header(fdt, totalsize, value)
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#define grub_fdt_get_off_dt_struct(fdt) \
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grub_fdt_get_header(fdt, off_dt_struct)
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#define grub_fdt_set_off_dt_struct(fdt, value) \
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grub_fdt_set_header(fdt, off_dt_struct, value)
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#define grub_fdt_get_off_dt_strings(fdt) \
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grub_fdt_get_header(fdt, off_dt_strings)
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#define grub_fdt_set_off_dt_strings(fdt, value) \
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grub_fdt_set_header(fdt, off_dt_strings, value)
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#define grub_fdt_get_off_mem_rsvmap(fdt) \
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grub_fdt_get_header(fdt, off_mem_rsvmap)
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#define grub_fdt_set_off_mem_rsvmap(fdt, value) \
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grub_fdt_set_header(fdt, off_mem_rsvmap, value)
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#define grub_fdt_get_version(fdt) \
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grub_fdt_get_header(fdt, version)
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#define grub_fdt_set_version(fdt, value) \
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grub_fdt_set_header(fdt, version, value)
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#define grub_fdt_get_last_comp_version(fdt) \
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grub_fdt_get_header(fdt, last_comp_version)
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#define grub_fdt_set_last_comp_version(fdt, value) \
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grub_fdt_set_header(fdt, last_comp_version, value)
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#define grub_fdt_get_boot_cpuid_phys(fdt) \
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grub_fdt_get_header(fdt, boot_cpuid_phys)
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#define grub_fdt_set_boot_cpuid_phys(fdt, value) \
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grub_fdt_set_header(fdt, boot_cpuid_phys, value)
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#define grub_fdt_get_size_dt_strings(fdt) \
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grub_fdt_get_header(fdt, size_dt_strings)
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#define grub_fdt_set_size_dt_strings(fdt, value) \
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grub_fdt_set_header(fdt, size_dt_strings, value)
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#define grub_fdt_get_size_dt_struct(fdt) \
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grub_fdt_get_header(fdt, size_dt_struct)
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#define grub_fdt_set_size_dt_struct(fdt, value) \
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grub_fdt_set_header(fdt, size_dt_struct, value)
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int grub_fdt_create_empty_tree (void *fdt, unsigned int size);
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int grub_fdt_check_header (void *fdt, unsigned int size);
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int grub_fdt_check_header_nosize (void *fdt);
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int grub_fdt_find_subnode (const void *fdt, unsigned int parentoffset,
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const char *name);
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int grub_fdt_add_subnode (void *fdt, unsigned int parentoffset,
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const char *name);
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int grub_fdt_set_prop (void *fdt, unsigned int nodeoffset, const char *name,
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const void *val, grub_uint32_t len);
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#define grub_fdt_set_prop32(fdt, nodeoffset, name, val) \
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({ \
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grub_uint32_t _val = grub_cpu_to_be32(val); \
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grub_fdt_set_prop ((fdt), (nodeoffset), (name), &_val, 4); \
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})
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#define grub_fdt_set_prop64(fdt, nodeoffset, name, val) \
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({ \
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grub_uint64_t _val = grub_cpu_to_be64(val); \
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grub_fdt_set_prop ((fdt), (nodeoffset), (name), &_val, 8); \
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})
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#endif /* ! GRUB_FDT_HEADER */
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