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Own fdt parsing implementation

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Francesco Lavra 2013-05-17 13:45:22 +02:00 • committed by Vladimir 'phcoder' Serbinenko
parent 470038745c
commit c6a8472baf
4 changed files with 587 additions and 104 deletions
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99
include/grub/fdt.h Normal file
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2013 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_FDT_HEADER
#define GRUB_FDT_HEADER 1
#include <grub/types.h>
#define FDT_MAGIC 0xD00DFEED
typedef struct {
grub_uint32_t magic;
grub_uint32_t totalsize;
grub_uint32_t off_dt_struct;
grub_uint32_t off_dt_strings;
grub_uint32_t off_mem_rsvmap;
grub_uint32_t version;
grub_uint32_t last_comp_version;
grub_uint32_t boot_cpuid_phys;
grub_uint32_t size_dt_strings;
grub_uint32_t size_dt_struct;
} grub_fdt_header_t;
#define grub_fdt_get_header(fdt, field) \
grub_be_to_cpu32(((const grub_fdt_header_t *)(fdt))->field)
#define grub_fdt_set_header(fdt, field, value) \
((grub_fdt_header_t *)(fdt))->field = grub_cpu_to_be32(value)
#define grub_fdt_get_magic(fdt) \
grub_fdt_get_header(fdt, magic)
#define grub_fdt_set_magic(fdt, value) \
grub_fdt_set_header(fdt, magic, value)
#define grub_fdt_get_totalsize(fdt) \
grub_fdt_get_header(fdt, totalsize)
#define grub_fdt_set_totalsize(fdt, value) \
grub_fdt_set_header(fdt, totalsize, value)
#define grub_fdt_get_off_dt_struct(fdt) \
grub_fdt_get_header(fdt, off_dt_struct)
#define grub_fdt_set_off_dt_struct(fdt, value) \
grub_fdt_set_header(fdt, off_dt_struct, value)
#define grub_fdt_get_off_dt_strings(fdt) \
grub_fdt_get_header(fdt, off_dt_strings)
#define grub_fdt_set_off_dt_strings(fdt, value) \
grub_fdt_set_header(fdt, off_dt_strings, value)
#define grub_fdt_get_off_mem_rsvmap(fdt) \
grub_fdt_get_header(fdt, off_mem_rsvmap)
#define grub_fdt_set_off_mem_rsvmap(fdt, value) \
grub_fdt_set_header(fdt, off_mem_rsvmap, value)
#define grub_fdt_get_version(fdt) \
grub_fdt_get_header(fdt, version)
#define grub_fdt_set_version(fdt, value) \
grub_fdt_set_header(fdt, version, value)
#define grub_fdt_get_last_comp_version(fdt) \
grub_fdt_get_header(fdt, last_comp_version)
#define grub_fdt_set_last_comp_version(fdt, value) \
grub_fdt_set_header(fdt, last_comp_version, value)
#define grub_fdt_get_boot_cpuid_phys(fdt) \
grub_fdt_get_header(fdt, boot_cpuid_phys)
#define grub_fdt_set_boot_cpuid_phys(fdt, value) \
grub_fdt_set_header(fdt, boot_cpuid_phys, value)
#define grub_fdt_get_size_dt_strings(fdt) \
grub_fdt_get_header(fdt, size_dt_strings)
#define grub_fdt_set_size_dt_strings(fdt, value) \
grub_fdt_set_header(fdt, size_dt_strings, value)
#define grub_fdt_get_size_dt_struct(fdt) \
grub_fdt_get_header(fdt, size_dt_struct)
#define grub_fdt_set_size_dt_struct(fdt, value) \
grub_fdt_set_header(fdt, size_dt_struct, value)
int grub_fdt_check_header (void *fdt, unsigned int size);
int grub_fdt_find_subnode (const void *fdt, unsigned int parentoffset,
const char *name);
int grub_fdt_add_subnode (void *fdt, unsigned int parentoffset,
const char *name);
int grub_fdt_set_prop (void *fdt, unsigned int nodeoffset, const char *name,
const void *val, grub_uint32_t len);
#define grub_fdt_set_prop32(fdt, nodeoffset, name, val) \
({ \
grub_uint32_t _val = grub_cpu_to_be32(val); \
grub_fdt_set_prop ((fdt), (nodeoffset), (name), &_val, 4); \
})
#endif /* ! GRUB_FDT_HEADER */