301 lines
8.2 KiB
C
301 lines
8.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef DTC_H
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#define DTC_H
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/*
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* (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include <libfdt_env.h>
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#include <fdt.h>
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#include "util.h"
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#ifdef DEBUG
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#define debug(...) printf(__VA_ARGS__)
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#else
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#define debug(...)
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#endif
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#define DEFAULT_FDT_VERSION 17
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/*
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* Command line options
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*/
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extern int quiet; /* Level of quietness */
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extern int reservenum; /* Number of memory reservation slots */
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extern int minsize; /* Minimum blob size */
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extern int padsize; /* Additional padding to blob */
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extern int alignsize; /* Additional padding to blob accroding to the alignsize */
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extern int phandle_format; /* Use linux,phandle or phandle properties */
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extern int generate_symbols; /* generate symbols for nodes with labels */
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extern int generate_fixups; /* generate fixups */
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extern int auto_label_aliases; /* auto generate labels -> aliases */
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extern int annotate; /* annotate .dts with input source location */
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#define PHANDLE_LEGACY 0x1
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#define PHANDLE_EPAPR 0x2
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#define PHANDLE_BOTH 0x3
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typedef uint32_t cell_t;
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#define streq(a, b) (strcmp((a), (b)) == 0)
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#define strstarts(s, prefix) (strncmp((s), (prefix), strlen(prefix)) == 0)
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#define strprefixeq(a, n, b) (strlen(b) == (n) && (memcmp(a, b, n) == 0))
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#define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
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/* Data blobs */
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enum markertype {
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TYPE_NONE,
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REF_PHANDLE,
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REF_PATH,
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LABEL,
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TYPE_UINT8,
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TYPE_UINT16,
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TYPE_UINT32,
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TYPE_UINT64,
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TYPE_STRING,
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};
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extern const char *markername(enum markertype markertype);
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struct marker {
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enum markertype type;
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int offset;
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char *ref;
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struct marker *next;
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};
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struct data {
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int len;
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char *val;
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struct marker *markers;
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};
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#define empty_data ((struct data){ 0 /* all .members = 0 or NULL */ })
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#define for_each_marker(m) \
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for (; (m); (m) = (m)->next)
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#define for_each_marker_of_type(m, t) \
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for_each_marker(m) \
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if ((m)->type == (t))
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size_t type_marker_length(struct marker *m);
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void data_free(struct data d);
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struct data data_grow_for(struct data d, int xlen);
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struct data data_copy_mem(const char *mem, int len);
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struct data data_copy_escape_string(const char *s, int len);
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struct data data_copy_file(FILE *f, size_t len);
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struct data data_append_data(struct data d, const void *p, int len);
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struct data data_insert_at_marker(struct data d, struct marker *m,
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const void *p, int len);
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struct data data_merge(struct data d1, struct data d2);
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struct data data_append_cell(struct data d, cell_t word);
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struct data data_append_integer(struct data d, uint64_t word, int bits);
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struct data data_append_re(struct data d, uint64_t address, uint64_t size);
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struct data data_append_addr(struct data d, uint64_t addr);
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struct data data_append_byte(struct data d, uint8_t byte);
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struct data data_append_zeroes(struct data d, int len);
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struct data data_append_align(struct data d, int align);
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struct data data_add_marker(struct data d, enum markertype type, char *ref);
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bool data_is_one_string(struct data d);
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/* DT constraints */
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#define MAX_PROPNAME_LEN 31
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#define MAX_NODENAME_LEN 31
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/* Live trees */
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struct label {
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bool deleted;
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char *label;
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struct label *next;
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};
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struct bus_type {
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const char *name;
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};
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struct property {
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bool deleted;
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char *name;
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struct data val;
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struct property *next;
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struct label *labels;
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struct srcpos *srcpos;
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};
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struct node {
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bool deleted;
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char *name;
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struct property *proplist;
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struct node *children;
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struct node *parent;
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struct node *next_sibling;
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char *fullpath;
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int basenamelen;
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cell_t phandle;
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int addr_cells, size_cells;
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struct label *labels;
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const struct bus_type *bus;
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struct srcpos *srcpos;
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bool omit_if_unused, is_referenced;
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};
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#define for_each_label_withdel(l0, l) \
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for ((l) = (l0); (l); (l) = (l)->next)
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#define for_each_label(l0, l) \
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for_each_label_withdel(l0, l) \
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if (!(l)->deleted)
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#define for_each_property_withdel(n, p) \
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for ((p) = (n)->proplist; (p); (p) = (p)->next)
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#define for_each_property(n, p) \
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for_each_property_withdel(n, p) \
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if (!(p)->deleted)
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#define for_each_child_withdel(n, c) \
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for ((c) = (n)->children; (c); (c) = (c)->next_sibling)
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#define for_each_child(n, c) \
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for_each_child_withdel(n, c) \
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if (!(c)->deleted)
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void add_label(struct label **labels, char *label);
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void delete_labels(struct label **labels);
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struct property *build_property(char *name, struct data val,
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struct srcpos *srcpos);
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struct property *build_property_delete(char *name);
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struct property *chain_property(struct property *first, struct property *list);
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struct property *reverse_properties(struct property *first);
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struct node *build_node(struct property *proplist, struct node *children,
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struct srcpos *srcpos);
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struct node *build_node_delete(struct srcpos *srcpos);
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struct node *name_node(struct node *node, char *name);
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struct node *omit_node_if_unused(struct node *node);
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struct node *reference_node(struct node *node);
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struct node *chain_node(struct node *first, struct node *list);
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struct node *merge_nodes(struct node *old_node, struct node *new_node);
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struct node *add_orphan_node(struct node *old_node, struct node *new_node, char *ref);
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void add_property(struct node *node, struct property *prop);
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void delete_property_by_name(struct node *node, char *name);
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void delete_property(struct property *prop);
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void add_child(struct node *parent, struct node *child);
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void delete_node_by_name(struct node *parent, char *name);
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void delete_node(struct node *node);
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void append_to_property(struct node *node,
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char *name, const void *data, int len);
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const char *get_unitname(struct node *node);
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struct property *get_property(struct node *node, const char *propname);
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cell_t propval_cell(struct property *prop);
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cell_t propval_cell_n(struct property *prop, int n);
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struct property *get_property_by_label(struct node *tree, const char *label,
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struct node **node);
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struct marker *get_marker_label(struct node *tree, const char *label,
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struct node **node, struct property **prop);
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struct node *get_subnode(struct node *node, const char *nodename);
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struct node *get_node_by_path(struct node *tree, const char *path);
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struct node *get_node_by_label(struct node *tree, const char *label);
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struct node *get_node_by_phandle(struct node *tree, cell_t phandle);
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struct node *get_node_by_ref(struct node *tree, const char *ref);
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cell_t get_node_phandle(struct node *root, struct node *node);
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uint32_t guess_boot_cpuid(struct node *tree);
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/* Boot info (tree plus memreserve information */
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struct reserve_info {
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uint64_t address, size;
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struct reserve_info *next;
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struct label *labels;
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};
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struct reserve_info *build_reserve_entry(uint64_t start, uint64_t len);
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struct reserve_info *chain_reserve_entry(struct reserve_info *first,
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struct reserve_info *list);
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struct reserve_info *add_reserve_entry(struct reserve_info *list,
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struct reserve_info *new);
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struct dt_info {
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unsigned int dtsflags;
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struct reserve_info *reservelist;
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uint32_t boot_cpuid_phys;
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struct node *dt; /* the device tree */
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const char *outname; /* filename being written to, "-" for stdout */
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};
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/* DTS version flags definitions */
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#define DTSF_V1 0x0001 /* /dts-v1/ */
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#define DTSF_PLUGIN 0x0002 /* /plugin/ */
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struct dt_info *build_dt_info(unsigned int dtsflags,
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struct reserve_info *reservelist,
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struct node *tree, uint32_t boot_cpuid_phys);
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void sort_tree(struct dt_info *dti);
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void generate_label_tree(struct dt_info *dti, char *name, bool allocph);
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void generate_fixups_tree(struct dt_info *dti, char *name);
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void generate_local_fixups_tree(struct dt_info *dti, char *name);
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/* Checks */
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void parse_checks_option(bool warn, bool error, const char *arg);
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void process_checks(bool force, struct dt_info *dti);
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/* Flattened trees */
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void dt_to_blob(FILE *f, struct dt_info *dti, int version);
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void dt_to_asm(FILE *f, struct dt_info *dti, int version);
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struct dt_info *dt_from_blob(const char *fname);
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/* Tree source */
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void dt_to_source(FILE *f, struct dt_info *dti);
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struct dt_info *dt_from_source(const char *f);
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/* YAML source */
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void dt_to_yaml(FILE *f, struct dt_info *dti);
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/* FS trees */
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struct dt_info *dt_from_fs(const char *dirname);
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#endif /* DTC_H */
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