Current File : //lib/modules/3.10.0-957.21.3.el7.centos.plus.x86_64/source/scripts/dtc/dtc.c
/*
* (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
*
*
* This program 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 2 of the
* License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include "dtc.h"
#include "srcpos.h"
#include "version_gen.h"
/*
* Command line options
*/
int quiet; /* Level of quietness */
int reservenum; /* Number of memory reservation slots */
int minsize; /* Minimum blob size */
int padsize; /* Additional padding to blob */
int phandle_format = PHANDLE_BOTH; /* Use linux,phandle or phandle properties */
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);
}
static void __attribute__ ((noreturn)) usage(void)
{
fprintf(stderr, "Usage:\n");
fprintf(stderr, "\tdtc [options] <input file>\n");
fprintf(stderr, "\nOptions:\n");
fprintf(stderr, "\t-h\n");
fprintf(stderr, "\t\tThis help text\n");
fprintf(stderr, "\t-q\n");
fprintf(stderr, "\t\tQuiet: -q suppress warnings, -qq errors, -qqq all\n");
fprintf(stderr, "\t-I <input format>\n");
fprintf(stderr, "\t\tInput formats are:\n");
fprintf(stderr, "\t\t\tdts - device tree source text\n");
fprintf(stderr, "\t\t\tdtb - device tree blob\n");
fprintf(stderr, "\t\t\tfs - /proc/device-tree style directory\n");
fprintf(stderr, "\t-o <output file>\n");
fprintf(stderr, "\t-O <output format>\n");
fprintf(stderr, "\t\tOutput formats are:\n");
fprintf(stderr, "\t\t\tdts - device tree source text\n");
fprintf(stderr, "\t\t\tdtb - device tree blob\n");
fprintf(stderr, "\t\t\tasm - assembler source\n");
fprintf(stderr, "\t-V <output version>\n");
fprintf(stderr, "\t\tBlob version to produce, defaults to %d (relevant for dtb\n\t\tand asm output only)\n", DEFAULT_FDT_VERSION);
fprintf(stderr, "\t-d <output dependency file>\n");
fprintf(stderr, "\t-R <number>\n");
fprintf(stderr, "\t\tMake space for <number> reserve map entries (relevant for \n\t\tdtb and asm output only)\n");
fprintf(stderr, "\t-S <bytes>\n");
fprintf(stderr, "\t\tMake the blob at least <bytes> long (extra space)\n");
fprintf(stderr, "\t-p <bytes>\n");
fprintf(stderr, "\t\tAdd padding to the blob of <bytes> long (extra space)\n");
fprintf(stderr, "\t-b <number>\n");
fprintf(stderr, "\t\tSet the physical boot cpu\n");
fprintf(stderr, "\t-f\n");
fprintf(stderr, "\t\tForce - try to produce output even if the input tree has errors\n");
fprintf(stderr, "\t-i\n");
fprintf(stderr, "\t\tAdd a path to search for include files\n");
fprintf(stderr, "\t-s\n");
fprintf(stderr, "\t\tSort nodes and properties before outputting (only useful for\n\t\tcomparing trees)\n");
fprintf(stderr, "\t-v\n");
fprintf(stderr, "\t\tPrint DTC version and exit\n");
fprintf(stderr, "\t-H <phandle format>\n");
fprintf(stderr, "\t\tphandle formats are:\n");
fprintf(stderr, "\t\t\tlegacy - \"linux,phandle\" properties only\n");
fprintf(stderr, "\t\t\tepapr - \"phandle\" properties only\n");
fprintf(stderr, "\t\t\tboth - Both \"linux,phandle\" and \"phandle\" properties\n");
fprintf(stderr, "\t-W [no-]<checkname>\n");
fprintf(stderr, "\t-E [no-]<checkname>\n");
fprintf(stderr, "\t\t\tenable or disable warnings and errors\n");
exit(3);
}
int main(int argc, char *argv[])
{
struct boot_info *bi;
const char *inform = "dts";
const char *outform = "dts";
const char *outname = "-";
const char *depname = NULL;
int force = 0, sort = 0;
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;
while ((opt = getopt(argc, argv, "hI:O:o:V:d:R:S:p:fqb:i:vH:sW:E:"))
!= 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 = strtol(optarg, NULL, 0);
break;
case 'S':
minsize = strtol(optarg, NULL, 0);
break;
case 'p':
padsize = strtol(optarg, NULL, 0);
break;
case 'f':
force = 1;
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':
printf("Version: %s\n", DTC_VERSION);
exit(0);
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 = 1;
break;
case 'W':
parse_checks_option(true, false, optarg);
break;
case 'E':
parse_checks_option(false, true, optarg);
break;
case 'h':
default:
usage();
}
}
if (argc > (optind+1))
usage();
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 (minsize)
fprintf(stderr, "DTC: Use of \"-S\" is deprecated; it will be removed soon, use \"-p\" instead\n");
if (depname) {
depfile = fopen(depname, "w");
if (!depfile)
die("Couldn't open dependency file %s: %s\n", depname,
strerror(errno));
fprintf(depfile, "%s:", outname);
}
if (streq(inform, "dts"))
bi = dt_from_source(arg);
else if (streq(inform, "fs"))
bi = dt_from_fs(arg);
else if(streq(inform, "dtb"))
bi = dt_from_blob(arg);
else
die("Unknown input format \"%s\"\n", inform);
if (depfile) {
fputc('\n', depfile);
fclose(depfile);
}
if (cmdline_boot_cpuid != -1)
bi->boot_cpuid_phys = cmdline_boot_cpuid;
fill_fullpaths(bi->dt, "");
process_checks(force, bi);
if (sort)
sort_tree(bi);
if (streq(outname, "-")) {
outf = stdout;
} else {
outf = fopen(outname, "w");
if (! outf)
die("Couldn't open output file %s: %s\n",
outname, strerror(errno));
}
if (streq(outform, "dts")) {
dt_to_source(outf, bi);
} else if (streq(outform, "dtb")) {
dt_to_blob(outf, bi, outversion);
} else if (streq(outform, "asm")) {
dt_to_asm(outf, bi, outversion);
} else if (streq(outform, "null")) {
/* do nothing */
} else {
die("Unknown output format \"%s\"\n", outform);
}
exit(0);
}
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