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-rw-r--r--scripts/dtc/dtc.c139
1 files changed, 121 insertions, 18 deletions
diff --git a/scripts/dtc/dtc.c b/scripts/dtc/dtc.c
index 8c4add69a7..c36994e6ea 100644
--- a/scripts/dtc/dtc.c
+++ b/scripts/dtc/dtc.c
@@ -18,6 +18,8 @@
* USA
*/
+#include <sys/stat.h>
+
#include "dtc.h"
#include "srcpos.h"
@@ -28,7 +30,16 @@ 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 */
+int alignsize; /* Additional padding to blob accroding 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 */
+
+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)
{
@@ -48,10 +59,8 @@ static void fill_fullpaths(struct node *tree, const char *prefix)
}
/* Usage related data. */
-#define FDT_VERSION(version) _FDT_VERSION(version)
-#define _FDT_VERSION(version) #version
static const char usage_synopsis[] = "dtc [options] <input file>";
-static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:fb:i:H:sW:E:hv";
+static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@Ahv";
static struct option const usage_long_opts[] = {
{"quiet", no_argument, NULL, 'q'},
{"in-format", a_argument, NULL, 'I'},
@@ -62,6 +71,7 @@ static struct option const usage_long_opts[] = {
{"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'},
@@ -69,6 +79,8 @@ static struct option const usage_long_opts[] = {
{"phandle", a_argument, NULL, 'H'},
{"warning", a_argument, NULL, 'W'},
{"error", a_argument, NULL, 'E'},
+ {"symbols", no_argument, NULL, '@'},
+ {"auto-alias", no_argument, NULL, 'A'},
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
{NULL, no_argument, NULL, 0x0},
@@ -84,11 +96,12 @@ static const char * const usage_opts_help[] = {
"\t\tdts - device tree source text\n"
"\t\tdtb - device tree blob\n"
"\t\tasm - assembler source",
- "\n\tBlob version to produce, defaults to "FDT_VERSION(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
+ "\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",
@@ -99,16 +112,62 @@ static const char * const usage_opts_help[] = {
"\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\tEnable auto-alias of labels",
"\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, ".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 boot_info *bi;
- const char *inform = "dts";
- const char *outform = "dts";
+ struct dt_info *dti;
+ const char *inform = NULL;
+ const char *outform = NULL;
const char *outname = "-";
const char *depname = NULL;
bool force = false, sort = false;
@@ -122,6 +181,7 @@ int main(int argc, char *argv[])
reservenum = 0;
minsize = 0;
padsize = 0;
+ alignsize = 0;
while ((opt = util_getopt_long()) != EOF) {
switch (opt) {
@@ -149,6 +209,12 @@ int main(int argc, char *argv[])
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;
@@ -187,6 +253,13 @@ int main(int argc, char *argv[])
parse_checks_option(false, true, optarg);
break;
+ case '@':
+ generate_symbols = 1;
+ break;
+ case 'A':
+ auto_label_aliases = 1;
+ break;
+
case 'h':
usage(NULL);
default:
@@ -213,28 +286,58 @@ int main(int argc, char *argv[])
fprintf(depfile, "%s:", outname);
}
+ 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 (streq(inform, "dts"))
- bi = dt_from_source(arg);
+ dti = dt_from_source(arg);
else if (streq(inform, "fs"))
- bi = dt_from_fs(arg);
+ dti = dt_from_fs(arg);
else if(streq(inform, "dtb"))
- bi = dt_from_blob(arg);
+ 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)
- bi->boot_cpuid_phys = cmdline_boot_cpuid;
+ 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;
+ }
- fill_fullpaths(bi->dt, "");
- process_checks(force, bi);
+ process_checks(force, dti);
+
+ if (auto_label_aliases)
+ generate_label_tree(dti, "aliases", false);
+
+ if (generate_symbols)
+ generate_label_tree(dti, "__symbols__", true);
+
+ if (generate_fixups) {
+ generate_fixups_tree(dti, "__fixups__");
+ generate_local_fixups_tree(dti, "__local_fixups__");
+ }
if (sort)
- sort_tree(bi);
+ sort_tree(dti);
if (streq(outname, "-")) {
outf = stdout;
@@ -246,11 +349,11 @@ int main(int argc, char *argv[])
}
if (streq(outform, "dts")) {
- dt_to_source(outf, bi);
+ dt_to_source(outf, dti);
} else if (streq(outform, "dtb")) {
- dt_to_blob(outf, bi, outversion);
+ dt_to_blob(outf, dti, outversion);
} else if (streq(outform, "asm")) {
- dt_to_asm(outf, bi, outversion);
+ dt_to_asm(outf, dti, outversion);
} else if (streq(outform, "null")) {
/* do nothing */
} else {
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-01 11:38:31 +0000