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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include <sys/stat.h>
#include "dtc.h"#include "srcpos.h"
/* * Command line options */int quiet; /* Level of quietness */unsigned int reservenum;/* Number of memory reservation slots */int minsize; /* Minimum blob size */int padsize; /* Additional padding to blob */int alignsize; /* Additional padding to blob according to the alignsize */int phandle_format = PHANDLE_EPAPR; /* Use linux,phandle or phandle properties */int generate_symbols; /* enable symbols & fixup support */int generate_fixups; /* suppress generation of fixups on symbol support */int auto_label_aliases; /* auto generate labels -> aliases */int annotate; /* Level of annotation: 1 for input source location >1 for full input source location. */
static int is_power_of_2(int x){ return (x > 0) && ((x & (x - 1)) == 0);}
static void fill_fullpaths(struct node *tree, const char *prefix){ struct node *child; const char *unit;
tree->fullpath = join_path(prefix, tree->name);
unit = strchr(tree->name, '@'); if (unit) tree->basenamelen = unit - tree->name; else tree->basenamelen = strlen(tree->name);
for_each_child(tree, child) fill_fullpaths(child, tree->fullpath);}
/* Usage related data. */static const char usage_synopsis[] = "dtc [options] <input file>";static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@LAThv";static struct option const usage_long_opts[] = { {"quiet", no_argument, NULL, 'q'}, {"in-format", a_argument, NULL, 'I'}, {"out", a_argument, NULL, 'o'}, {"out-format", a_argument, NULL, 'O'}, {"out-version", a_argument, NULL, 'V'}, {"out-dependency", a_argument, NULL, 'd'}, {"reserve", a_argument, NULL, 'R'}, {"space", a_argument, NULL, 'S'}, {"pad", a_argument, NULL, 'p'}, {"align", a_argument, NULL, 'a'}, {"boot-cpu", a_argument, NULL, 'b'}, {"force", no_argument, NULL, 'f'}, {"include", a_argument, NULL, 'i'}, {"sort", no_argument, NULL, 's'}, {"phandle", a_argument, NULL, 'H'}, {"warning", a_argument, NULL, 'W'}, {"error", a_argument, NULL, 'E'}, {"symbols", no_argument, NULL, '@'}, {"local-fixups", no_argument, NULL, 'L'}, {"auto-alias", no_argument, NULL, 'A'}, {"annotate", no_argument, NULL, 'T'}, {"help", no_argument, NULL, 'h'}, {"version", no_argument, NULL, 'v'}, {NULL, no_argument, NULL, 0x0},};static const char * const usage_opts_help[] = { "\n\tQuiet: -q suppress warnings, -qq errors, -qqq all", "\n\tInput formats are:\n" "\t\tdts - device tree source text\n" "\t\tdtb - device tree blob\n" "\t\tfs - /proc/device-tree style directory", "\n\tOutput file", "\n\tOutput formats are:\n" "\t\tdts - device tree source text\n" "\t\tdtb - device tree blob\n"#ifndef NO_YAML "\t\tyaml - device tree encoded as YAML\n"#endif "\t\tasm - assembler source", "\n\tBlob version to produce, defaults to "stringify(DEFAULT_FDT_VERSION)" (for dtb and asm output)", "\n\tOutput dependency file", "\n\tMake space for <number> reserve map entries (for dtb and asm output)", "\n\tMake the blob at least <bytes> long (extra space)", "\n\tAdd padding to the blob of <bytes> long (extra space)", "\n\tMake the blob align to the <bytes> (extra space)", "\n\tSet the physical boot cpu", "\n\tTry to produce output even if the input tree has errors", "\n\tAdd a path to search for include files", "\n\tSort nodes and properties before outputting (useful for comparing trees)", "\n\tValid phandle formats are:\n" "\t\tlegacy - \"linux,phandle\" properties only\n" "\t\tepapr - \"phandle\" properties only\n" "\t\tboth - Both \"linux,phandle\" and \"phandle\" properties", "\n\tEnable/disable warnings (prefix with \"no-\")", "\n\tEnable/disable errors (prefix with \"no-\")", "\n\tEnable generation of symbols", "\n\tPossibly generates a __local_fixups__ and a __fixups__ node at the root node", "\n\tEnable auto-alias of labels", "\n\tAnnotate output .dts with input source file and line (-T -T for more details)", "\n\tPrint this help and exit", "\n\tPrint version and exit", NULL,};
static const char *guess_type_by_name(const char *fname, const char *fallback){ const char *s;
s = strrchr(fname, '.'); if (s == NULL) return fallback; if (!strcasecmp(s, ".dts")) return "dts"; if (!strcasecmp(s, ".yaml")) return "yaml"; if (!strcasecmp(s, ".dtbo")) return "dtb"; if (!strcasecmp(s, ".dtb")) return "dtb"; return fallback;}
static const char *guess_input_format(const char *fname, const char *fallback){ struct stat statbuf; fdt32_t magic; FILE *f;
if (stat(fname, &statbuf) != 0) return fallback;
if (S_ISDIR(statbuf.st_mode)) return "fs";
if (!S_ISREG(statbuf.st_mode)) return fallback;
f = fopen(fname, "r"); if (f == NULL) return fallback; if (fread(&magic, 4, 1, f) != 1) { fclose(f); return fallback; } fclose(f);
if (fdt32_to_cpu(magic) == FDT_MAGIC) return "dtb";
return guess_type_by_name(fname, fallback);}
int main(int argc, char *argv[]){ struct dt_info *dti; const char *inform = NULL; const char *outform = NULL; const char *outname = "-"; const char *depname = NULL; bool force = false, sort = false; const char *arg; int opt; FILE *outf = NULL; int outversion = DEFAULT_FDT_VERSION; long long cmdline_boot_cpuid = -1;
quiet = 0; reservenum = 0; minsize = 0; padsize = 0; alignsize = 0;
while ((opt = util_getopt_long()) != EOF) { switch (opt) { case 'I': inform = optarg; break; case 'O': outform = optarg; break; case 'o': outname = optarg; break; case 'V': outversion = strtol(optarg, NULL, 0); break; case 'd': depname = optarg; break; case 'R': reservenum = strtoul(optarg, NULL, 0); break; case 'S': minsize = strtol(optarg, NULL, 0); break; case 'p': padsize = strtol(optarg, NULL, 0); break; case 'a': alignsize = strtol(optarg, NULL, 0); if (!is_power_of_2(alignsize)) die("Invalid argument \"%d\" to -a option\n", alignsize); break; case 'f': force = true; break; case 'q': quiet++; break; case 'b': cmdline_boot_cpuid = strtoll(optarg, NULL, 0); break; case 'i': srcfile_add_search_path(optarg); break; case 'v': util_version(); case 'H': if (streq(optarg, "legacy")) phandle_format = PHANDLE_LEGACY; else if (streq(optarg, "epapr")) phandle_format = PHANDLE_EPAPR; else if (streq(optarg, "both")) phandle_format = PHANDLE_BOTH; else die("Invalid argument \"%s\" to -H option\n", optarg); break;
case 's': sort = true; break;
case 'W': parse_checks_option(true, false, optarg); break;
case 'E': parse_checks_option(false, true, optarg); break;
case '@': generate_symbols = 1; break;
case 'L': generate_fixups = 1; break;
case 'A': auto_label_aliases = 1; break; case 'T': annotate++; break;
case 'h': usage(NULL); default: usage("unknown option"); } }
if (argc > (optind+1)) usage("missing files"); else if (argc < (optind+1)) arg = "-"; else arg = argv[optind];
/* minsize and padsize are mutually exclusive */ if (minsize && padsize) die("Can't set both -p and -S\n");
if (depname) { depfile = fopen(depname, "w"); if (!depfile) die("Couldn't open dependency file %s: %s\n", depname, strerror(errno));
fprint_path_escaped(depfile, outname); fputc(':', depfile); }
if (inform == NULL) inform = guess_input_format(arg, "dts"); if (outform == NULL) { outform = guess_type_by_name(outname, NULL); if (outform == NULL) { if (streq(inform, "dts")) outform = "dtb"; else outform = "dts"; } } if (annotate && (!streq(inform, "dts") || !streq(outform, "dts"))) die("--annotate requires -I dts -O dts\n"); if (streq(inform, "dts")) dti = dt_from_source(arg); else if (streq(inform, "fs")) dti = dt_from_fs(arg); else if(streq(inform, "dtb")) dti = dt_from_blob(arg); else die("Unknown input format \"%s\"\n", inform);
dti->outname = outname;
if (depfile) { fputc('\n', depfile); fclose(depfile); }
if (cmdline_boot_cpuid != -1) dti->boot_cpuid_phys = cmdline_boot_cpuid;
fill_fullpaths(dti->dt, "");
/* on a plugin, generate by default */ if (dti->dtsflags & DTSF_PLUGIN) { generate_fixups = 1; }
process_checks(force, dti);
if (auto_label_aliases) generate_label_tree(dti, "aliases", false);
generate_labels_from_tree(dti, "__symbols__");
if (generate_symbols) generate_label_tree(dti, "__symbols__", true);
fixup_phandles(dti, "__fixups__"); local_fixup_phandles(dti, "__local_fixups__");
if (generate_fixups) { generate_fixups_tree(dti, "__fixups__"); generate_local_fixups_tree(dti, "__local_fixups__"); }
if (sort) sort_tree(dti);
if (streq(outname, "-")) { outf = stdout; } else { outf = fopen(outname, "wb"); if (! outf) die("Couldn't open output file %s: %s\n", outname, strerror(errno)); }
if (streq(outform, "dts")) { dt_to_source(outf, dti);#ifndef NO_YAML } else if (streq(outform, "yaml")) { if (!streq(inform, "dts")) die("YAML output format requires dts input format\n"); dt_to_yaml(outf, dti);#endif } else if (streq(outform, "dtb")) { dt_to_blob(outf, dti, outversion); } else if (streq(outform, "asm")) { dt_to_asm(outf, dti, outversion); } else if (streq(outform, "null")) { /* do nothing */ } else { die("Unknown output format \"%s\"\n", outform); }
exit(0);}