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dtc
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dtc.h
/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef DTC_H #define DTC_H /* * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005. */ #include <stdio.h> #include <string.h> #include <stdlib.h> #include <stdint.h> #include <stdbool.h> #include <stdarg.h> #include <assert.h> #include <ctype.h> #include <errno.h> #include <unistd.h> #include <inttypes.h> #include <libfdt_env.h> #include <fdt.h> #include "util.h" #ifdef DEBUG #define debug(...) printf(__VA_ARGS__) #else #define debug(...) #endif #define DEFAULT_FDT_VERSION 17 /* * Command line options */ extern int quiet; /* Level of quietness */ extern unsigned int reservenum; /* Number of memory reservation slots */ extern int minsize; /* Minimum blob size */ extern int padsize; /* Additional padding to blob */ extern int alignsize; /* Additional padding to blob accroding to the alignsize */ extern int phandle_format; /* Use linux,phandle or phandle properties */ extern int generate_symbols; /* generate symbols for nodes with labels */ extern int generate_fixups; /* generate fixups */ extern int auto_label_aliases; /* auto generate labels -> aliases */ extern int annotate; /* annotate .dts with input source location */ #define PHANDLE_LEGACY 0x1 #define PHANDLE_EPAPR 0x2 #define PHANDLE_BOTH 0x3 typedef uint32_t cell_t; static inline bool phandle_is_valid(cell_t phandle) { return phandle != 0 && phandle != ~0U; } static inline uint16_t dtb_ld16(const void *p) { const uint8_t *bp = (const uint8_t *)p; return ((uint16_t)bp[0] << 8) | bp[1]; } static inline uint32_t dtb_ld32(const void *p) { const uint8_t *bp = (const uint8_t *)p; return ((uint32_t)bp[0] << 24) | ((uint32_t)bp[1] << 16) | ((uint32_t)bp[2] << 8) | bp[3]; } static inline uint64_t dtb_ld64(const void *p) { const uint8_t *bp = (const uint8_t *)p; return ((uint64_t)bp[0] << 56) | ((uint64_t)bp[1] << 48) | ((uint64_t)bp[2] << 40) | ((uint64_t)bp[3] << 32) | ((uint64_t)bp[4] << 24) | ((uint64_t)bp[5] << 16) | ((uint64_t)bp[6] << 8) | bp[7]; } #define streq(a, b) (strcmp((a), (b)) == 0) #define strstarts(s, prefix) (strncmp((s), (prefix), strlen(prefix)) == 0) #define strprefixeq(a, n, b) (strlen(b) == (n) && (memcmp(a, b, n) == 0)) static inline bool strends(const char *str, const char *suffix) { unsigned int len, suffix_len; len = strlen(str); suffix_len = strlen(suffix); if (len < suffix_len) return false; return streq(str + len - suffix_len, suffix); } #define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1)) /* Data blobs */ enum markertype { TYPE_NONE, REF_PHANDLE, REF_PATH, LABEL, TYPE_UINT8, TYPE_UINT16, TYPE_UINT32, TYPE_UINT64, TYPE_STRING, }; static inline bool is_type_marker(enum markertype type) { return type >= TYPE_UINT8; } extern const char *markername(enum markertype markertype); struct marker { enum markertype type; unsigned int offset; char *ref; struct marker *next; }; struct data { unsigned int len; char *val; struct marker *markers; }; #define empty_data ((struct data){ 0 /* all .members = 0 or NULL */ }) #define for_each_marker(m) \ for (; (m); (m) = (m)->next) #define for_each_marker_of_type(m, t) \ for_each_marker(m) \ if ((m)->type == (t)) static inline struct marker *next_type_marker(struct marker *m) { for_each_marker(m) if (is_type_marker(m->type)) break; return m; } static inline size_t type_marker_length(struct marker *m) { struct marker *next = next_type_marker(m->next); if (next) return next->offset - m->offset; return 0; } void data_free(struct data d); struct data data_grow_for(struct data d, unsigned int xlen); struct data data_copy_mem(const char *mem, int len); struct data data_copy_escape_string(const char *s, int len); struct data data_copy_file(FILE *f, size_t len); struct data data_append_data(struct data d, const void *p, int len); struct data data_insert_at_marker(struct data d, struct marker *m, const void *p, int len); struct data data_merge(struct data d1, struct data d2); struct data data_append_cell(struct data d, cell_t word); struct data data_append_integer(struct data d, uint64_t word, int bits); struct data data_append_re(struct data d, uint64_t address, uint64_t size); struct data data_append_addr(struct data d, uint64_t addr); struct data data_append_byte(struct data d, uint8_t byte); struct data data_append_zeroes(struct data d, int len); struct data data_append_align(struct data d, int align); struct data data_add_marker(struct data d, enum markertype type, char *ref); bool data_is_one_string(struct data d); /* DT constraints */ #define MAX_PROPNAME_LEN 31 #define MAX_NODENAME_LEN 31 /* Live trees */ struct label { bool deleted; char *label; struct label *next; }; struct bus_type { const char *name; }; struct property { bool deleted; char *name; struct data val; struct property *next; struct label *labels; struct srcpos *srcpos; }; struct node { bool deleted; char *name; struct property *proplist; struct node *children; struct node *parent; struct node *next_sibling; char *fullpath; int basenamelen; cell_t phandle; int addr_cells, size_cells; struct label *labels; const struct bus_type *bus; struct srcpos *srcpos; bool omit_if_unused, is_referenced; }; #define for_each_label_withdel(l0, l) \ for ((l) = (l0); (l); (l) = (l)->next) #define for_each_label(l0, l) \ for_each_label_withdel(l0, l) \ if (!(l)->deleted) #define for_each_property_withdel(n, p) \ for ((p) = (n)->proplist; (p); (p) = (p)->next) #define for_each_property(n, p) \ for_each_property_withdel(n, p) \ if (!(p)->deleted) #define for_each_child_withdel(n, c) \ for ((c) = (n)->children; (c); (c) = (c)->next_sibling) #define for_each_child(n, c) \ for_each_child_withdel(n, c) \ if (!(c)->deleted) void add_label(struct label **labels, char *label); void delete_labels(struct label **labels); struct property *build_property(char *name, struct data val, struct srcpos *srcpos); struct property *build_property_delete(char *name); struct property *chain_property(struct property *first, struct property *list); struct property *reverse_properties(struct property *first); struct node *build_node(struct property *proplist, struct node *children, struct srcpos *srcpos); struct node *build_node_delete(struct srcpos *srcpos); struct node *name_node(struct node *node, char *name); struct node *omit_node_if_unused(struct node *node); struct node *reference_node(struct node *node); struct node *chain_node(struct node *first, struct node *list); struct node *merge_nodes(struct node *old_node, struct node *new_node); struct node *add_orphan_node(struct node *old_node, struct node *new_node, char *ref); void add_property(struct node *node, struct property *prop); void delete_property_by_name(struct node *node, char *name); void delete_property(struct property *prop); void add_child(struct node *parent, struct node *child); void delete_node_by_name(struct node *parent, char *name); void delete_node(struct node *node); void append_to_property(struct node *node, char *name, const void *data, int len, enum markertype type); const char *get_unitname(struct node *node); struct property *get_property(struct node *node, const char *propname); cell_t propval_cell(struct property *prop); cell_t propval_cell_n(struct property *prop, unsigned int n); struct property *get_property_by_label(struct node *tree, const char *label, struct node **node); struct marker *get_marker_label(struct node *tree, const char *label, struct node **node, struct property **prop); struct node *get_subnode(struct node *node, const char *nodename); struct node *get_node_by_path(struct node *tree, const char *path); struct node *get_node_by_label(struct node *tree, const char *label); struct node *get_node_by_phandle(struct node *tree, cell_t phandle); struct node *get_node_by_ref(struct node *tree, const char *ref); cell_t get_node_phandle(struct node *root, struct node *node); uint32_t guess_boot_cpuid(struct node *tree); /* Boot info (tree plus memreserve information */ struct reserve_info { uint64_t address, size; struct reserve_info *next; struct label *labels; }; struct reserve_info *build_reserve_entry(uint64_t start, uint64_t len); struct reserve_info *chain_reserve_entry(struct reserve_info *first, struct reserve_info *list); struct reserve_info *add_reserve_entry(struct reserve_info *list, struct reserve_info *new); struct dt_info { unsigned int dtsflags; struct reserve_info *reservelist; uint32_t boot_cpuid_phys; struct node *dt; /* the device tree */ const char *outname; /* filename being written to, "-" for stdout */ }; /* DTS version flags definitions */ #define DTSF_V1 0x0001 /* /dts-v1/ */ #define DTSF_PLUGIN 0x0002 /* /plugin/ */ struct dt_info *build_dt_info(unsigned int dtsflags, struct reserve_info *reservelist, struct node *tree, uint32_t boot_cpuid_phys); void sort_tree(struct dt_info *dti); void generate_label_tree(struct dt_info *dti, char *name, bool allocph); void generate_fixups_tree(struct dt_info *dti, char *name); void generate_local_fixups_tree(struct dt_info *dti, char *name); /* Checks */ void parse_checks_option(bool warn, bool error, const char *arg); void process_checks(bool force, struct dt_info *dti); /* Flattened trees */ void dt_to_blob(FILE *f, struct dt_info *dti, int version); void dt_to_asm(FILE *f, struct dt_info *dti, int version); struct dt_info *dt_from_blob(const char *fname); /* Tree source */ void dt_to_source(FILE *f, struct dt_info *dti); struct dt_info *dt_from_source(const char *f); /* YAML source */ void dt_to_yaml(FILE *f, struct dt_info *dti); /* FS trees */ struct dt_info *dt_from_fs(const char *dirname); #endif /* DTC_H */
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